Open Access

MINI REVIEW

Interplay between Plants and Microbial Communities: Insights from Holobionts and Environmental Interactions

Phyton-International Journal of Experimental Botany, Vol.93, No.10, pp. 2519-2534, 2024, DOI:10.32604/phyton.2024.058012 - 30 October 2024
（This article belongs to the Special Issue: Plant-Microbiome Interactions: Unlocking the Conversation)
Abstract Plants interact with a complex network of microorganisms, forming a dynamic holobiont that is crucial for their health, growth, and adaptation. This interconnected system is deeply influenced by environmental factors, which modulate the relationships within the plant microbiome. Key environmental drivers such as light, temperature, and moisture can alter the balance of these interactions, impacting plant immunity, resilience, and overall fitness. The traditional disease triangle model, which emphasizes plant-pathogen-environment interactions, is enhanced by incorporating the role of the microbiome, revealing how microbial communities contribute to disease outcomes. This review highlights the importance of shifting focus More >

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ARTICLE

Effects of Paclobutrazol Seed Priming on Seedlings Quality, Physiological and Bakanae Disease Index Characteristics of Rice (Oryza sativa L.)

Phyton-International Journal of Experimental Botany, Vol.93, No.10, pp. 2535-2556, 2024, DOI:10.32604/phyton.2024.056734 - 30 October 2024
（This article belongs to the Special Issue: Influence of Biotic and Abiotic Stresses Signals on Plants and their Performance at Different Environments)
Abstract Rice (Oryza sativa L.) is one of the most important cereal crops in the world. Bakanae disease is a significant rice disease widely distributed in rice-growing regions worldwide. Therefore, the present investigation aimed to assess the optimal concentrations of paclobutrazol (PBZ) as a treatment for rice grains (cv. Sakha 108) to control bakanae disease, also evaluating its impact on grain germination, seedling growth parameters as well as disease index. Paclobutrazol concentrations had no significant impact on seed germination, regardless of whether the seeds were incubated with Fusarium fujikuroi or not. Application of PBZ, either alone or in… More >

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ARTICLE

Effects of Forest Types on Soil Available Nutrients and Carbon Contents in Coastal Areas, China

Phyton-International Journal of Experimental Botany, Vol.93, No.10, pp. 2557-2569, 2024, DOI:10.32604/phyton.2024.056868 - 30 October 2024
Abstract Clarifying the soil nutrient dynamics caused by forest type variations in the coastal region helps scientifically to apply fertilizer to forest plantations and enhance the carbon (C) sink capacity. Pure forests of Ligustrum and Metasequoia, as well as their mixed forests, in a coastal region of China were investigated by collecting 0–20 and 20–40 cm soil samples and analyzing their differences in bulk density, water content, pH, soil organic matter (SOM), ammonium (NH₄⁺–N), nitrate (NO₃^––N) and total nitrogen (TN), available phosphorus (AP) and potassium (AK), microbial biomass C (MBC) and N (MBN), and enzyme activity. The results… More >

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ARTICLE

Integrated Transcriptomics and Metabolomics Analysis for the Mechanism Underlying White-to-Pink Petal Color Transition in Hibiscus mutabilis Flowers

Phyton-International Journal of Experimental Botany, Vol.93, No.10, pp. 2571-2581, 2024, DOI:10.32604/phyton.2024.056606 - 30 October 2024
（This article belongs to the Special Issue: Plant Secondary Metabolism and Functional Biology)
Abstract Cotton rose (Hibiscus mutabilis) is a well-known ornamental plant that produces large flowers of vibrant colors. However, metabolites in H. mutabilis flowers with vibrant color have not been fully understood. By performing a combined analysis of metabolomics and transcriptomics data, we here explored mechanisms for the production of primary active compounds in this plant. Multivariate statistics unveiled differences in flavonoid metabolism between white and pink flowers, with pink flowers exhibiting a greater flavonoid abundance. The white-to-pink transition of cotton rose flowers may be attributed to pelargonidin-3-O-glucoside formation. On examining the expression of genes related to the structure More >

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ARTICLE

The Expression Characteristics and Potential Functions of Heat Shock Factors in Diatom Phaeodactylum tricornutum

Phyton-International Journal of Experimental Botany, Vol.93, No.10, pp. 2583-2596, 2024, DOI:10.32604/phyton.2024.055616 - 30 October 2024
Abstract Heat shock transcription factor (HSF) are essential regulators of heat shock protein (HSP) gene expression in plants and algae, contributing to their resilience against biotic and abiotic stresses. However, the localization, structure, phylogenetic relationship, and characteristics of PtHSF genes in microalgae, especially in diatom Phaeodactylum tricornutum, remain largely unexplored. This study presents a comprehensive analysis of the PtHSF gene family in P. tricornutum. A genome-wide analysis identified 68 PtHSF genes, which were classified into two distinct subfamilies: traditional and untraditional. Motif and structure analyses revealed evidence of multiple duplication events within the PtHSF gene family. Expression profiling revealed diurnal… More >

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ARTICLE

An Efficient Plant Regeneration System for Different Explants of Rare and Endangered Plants in Mussaenda anomala

Phyton-International Journal of Experimental Botany, Vol.93, No.10, pp. 2597-2611, 2024, DOI:10.32604/phyton.2024.056875 - 30 October 2024
（This article belongs to the Special Issue: Microbial Biotechnology Applications on Plant Performance and Physiology for Sustainable Production )
Abstract To establish an efficient regeneration method for the rare and endangered plant Mussaenda anomala to address problems regarding its reproductive obstacles and scarce populations. In this study, the terminal buds, axillary buds, stem segments with two axillary buds, stem segments with two axillary buds and one terminal bud, and leaves of M. anomala were used as explants. The effects of different explants and disinfection methods, plant growth regulators and substrates on plant regeneration were explored. The following results were obtained: (1) The terminal bud was a suitable explant for M. anomala tissue culture, and the disinfection method utilized… More >

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92

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ARTICLE

Enhanced Ultraviolet‑B Radiation Suppresses Magnaporthe oryzae Infection and Alleviates Its Damage to the Photosynthesis of Rice Leaves

Phyton-International Journal of Experimental Botany, Vol.93, No.10, pp. 2613-2628, 2024, DOI:10.32604/phyton.2024.056014 - 30 October 2024
（This article belongs to the Special Issue: Photosynthetic Responses to Biotic and Abiotic Stress)
Abstract In the present study, an indoor potting experiment was conducted to study the effects of enhanced UV-B radiation and Magnaporthe oryzae on the growth, stomatal structure, photosynthesis, and endogenous hormone contents of a traditional rice cultivar Baijiaolaojing in the Yuanyang terraces of Yunnan Province. In addition, the relationships between these parameters and disease indices were analyzed. We aimed to clarify the response of the photosynthetic physiology of rice under the combined stress of UV-B radiation and M. oryzae. Compared with the M. oryzae infection treatment, all the treatments, including M. oryzae infection before (MBR), simultaneously with (MSR), and after… More >

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107

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ARTICLE

The Impact of Varied Fertilizers on the Yield and Quality of Panicum miliaceum under Low Nitrogen Conditions

Phyton-International Journal of Experimental Botany, Vol.93, No.10, pp. 2629-2644, 2024, DOI:10.32604/phyton.2024.056157 - 30 October 2024
（This article belongs to the Special Issue: Integrated Nutrient Management in Cereal Crops)
Abstract To clarify the response characteristics of broomcorn millet yield and quality to various fertilizers under low nitrogen conditions, the present study investigated the effects of different fertilization treatments, including no fertilization (HCK, CCK), urea (HF1, CF1), phosphate fertilizer (HF2, CF2), compound fertilizer (HF3, CF3), and organic fertilizer (HF4, CF4), on the agronomic traits, quality, and starch pasting properties of proso millet. As experimental materials, non-waxy proso millet (Hequ red proso millet, denoted as HQH) and waxy proso millet (Chishu 1, denoted as CS1) were utilized. The results showed that under low nitrogen conditions, urea treatment… More >

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141

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ARTICLE

Comparative Analysis of Organic and Compound Fertilizers on the Yield and Metabolites of Platostoma palustre

Phyton-International Journal of Experimental Botany, Vol.93, No.10, pp. 2645-2662, 2024, DOI:10.32604/phyton.2024.053492 - 30 October 2024
（This article belongs to the Special Issue: Plant Secondary Metabolism and Functional Biology)
Abstract To explore the effect of fertilizers on the yield and quality of Platostoma palustre, in this study, P. palustre was utilized as the research material, and field experiments were conducted with different application rates of compound fertilizer and organic fertilizer and non-targeted metabolomics analysis was further employed to compare and analyze the differences in the metabolic components between the compound fertilizer and organic fertilizer treatments. The results of field experiments demonstrated that both compound and organic fertilizers could promote the fresh weight, shade dry weight, and dry weight of P. palustre, with 450 kg hm⁻² compound fertilizer and 4500… More >

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ARTICLE

MA-Res U-Net: Design of Soybean Navigation System with Improved U-Net Model

Phyton-International Journal of Experimental Botany, Vol.93, No.10, pp. 2663-2681, 2024, DOI:10.32604/phyton.2024.056054 - 30 October 2024
Abstract Traditional machine vision algorithms have difficulty handling the interference of light and shadow changes, broken rows, and weeds in the complex growth circumstances of soybean fields, which leads to erroneous navigation route segmentation. There are additional shortcomings in the feature extractFion capabilities of the conventional U-Net network. Our suggestion is to utilize an improved U-Net-based method to tackle these difficulties. First, we use ResNet’s powerful feature extraction capabilities to replace the original U-Net encoder. To enhance the concentration on characteristics unique to soybeans, we integrate a multi-scale high-performance attention mechanism. Furthermore, to do multi-scale feature… More >

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83

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REVIEW

Opportunities and Challenges of Plant Bioactive Compounds for Food and Agricultural-Related Areas

Phyton-International Journal of Experimental Botany, Vol.91, No.6, pp. 1105-1127, 2022, DOI:10.32604/phyton.2022.020913
Abstract The growing development of biological products highlights the social and environmental responsibility that several industrial companies are facing in recent years. In this context, the advancement of bioprocessing as an alternative for exploring the potential of ecologically based products, especially in biofuels, food, and agro-industrial business, exposes the rational efficiency of the application of renewable sources in different industrial segments. Industries strongly associated with food production concentrate large amounts of wastes rich in bioactive compounds. A range of highly effective technologies has been highly explored to recover large concentrations of prominent compounds present in these… More >

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REVIEW

Salinity Stress in Wheat: Effects, Mechanisms and Management Strategies

Phyton-International Journal of Experimental Botany, Vol.91, No.4, pp. 667-694, 2022, DOI:10.32604/phyton.2022.017365
Abstract Salinity stress is a major threat to global food production and its intensity is continuously increasing because of anthropogenic activities. Wheat is a staple food and a source of carbohydrates and calories for the majority of people across the globe. However, wheat productivity is adversely affected by salt stress, which is associated with a reduction in germination, growth, altered reproductive behavior and enzymatic activity, disrupted photosynthesis, hormonal imbalance, oxidative stress, and yield reductions. Thus, a better understanding of wheat (plant) behavior to salinity stress has essential implications to devise counter and alleviation measures to cope… More >

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2883

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REVIEW

Nanotechnology-Based Advancements in Postharvest Management of Horticultural Crops

Phyton-International Journal of Experimental Botany, Vol.91, No.3, pp. 471-487, 2022, DOI:10.32604/phyton.2022.017258
Abstract Horticulture is a branch of Agricultural science where it is defined as the science and art of cultivating and handling fruits, vegetables, ornamental plants and several plants having unique medicinal and aromatic values. Horticultural crops provide farmers with high income and have good export quality, but they have a concern about postharvest losses. Hence, increasing productivity and decreasing post-harvest losses by using scientific studies and techniques like biotechnology and nanotechnology could be the simplest possible solution to the above-mentioned problems. Using nanotechnology which is having the characteristics of nanoparticles is proven to be very useful… More >

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1715

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REVIEW

Paclobutrazol and Its Use in Fruit Production: A Review

Phyton-International Journal of Experimental Botany, Vol.91, No.1, pp. 1-12, 2022, DOI:10.32604/phyton.2022.016908
Abstract There are documentary records referring to paclobutrazol (PBZ) as a growth bioregulator that inhibits the gibberellin synthesis and its application increases yields in fruit and vegetable crop productions. Its agronomic management includes it as an emerging technology to reduce vigour, promote flower induction and flower development in fruit trees with increased economic returns. Its use is banned in some countries because of concerns about residues that can cause harmful effects on the environment. Therefore, the aim of this article was to collect, analyse and summarise relevant information on the use of PBZ in fruit tree… More >

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2131

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ARTICLE

Genome-Wide Analysis of the KANADI Gene Family and Its Expression Patterns under Different Nitrogen Concentrations Treatments in Populus trichocarpa

Phyton-International Journal of Experimental Botany, Vol.92, No.7, pp. 2001-2015, 2023, DOI:10.32604/phyton.2023.029350
Abstract KANADI (KAN) is a plant-specific gene that controlled the polarity development of lateral organs. It mainly acted on the abaxial characteristics of plants to make the lateral organs asymmetrical. However, it had been less identified in woody plants. In this study, the members of the KAN gene family in Populus trichocarpa were identified and analyzed using the bioinformatics method. The results showed that a total of 8 KAN family members were screened out, and each member contained the unique GARP domain and conserved region of the family proteins. Phylogenetic analysis and their gene structures revealed that all KAN genes… More >

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785

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ARTICLE

Anatomical and Molecular Identification of Ornamental Plant Ficus L. Species

Phyton-International Journal of Experimental Botany, Vol.92, No.5, pp. 1329-1347, 2023, DOI:10.32604/phyton.2023.026888
（This article belongs to the Special Issue: Plant–Environment Interactions)
Abstract This present study includes twelve species that represent the Ficus genus, namely; aspera, carica, tinctoria subsp. gibbosa, hirta, hispida, neriifolia, palmata, pumila, racemosa, septica, sur, and sycomorus, belonging to the Moraceae family. The species samples were collected from various locations in Egypt. The study focused on the anatomical and molecular characteristics of mature foliage leaves. Since the identification and classification of taxa are highly dependent on the anatomical features of leaves, the anatomical characteristics were recorded in the form of a comparison between the examined plants in the data matrix. This study aims to contribute to the identification of the studied species… More >

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868

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REVIEW

Mycorrhiza and Phosphate Solubilizing Bacteria: Potential Bioagents for Sustainable Phosphorus Management in Agriculture

Phyton-International Journal of Experimental Botany, Vol.91, No.2, pp. 257-278, 2022, DOI:10.32604/phyton.2022.016512
Abstract Phosphorus (P) is a critical nutrient that plays an essential role in improving soil fertility for optimum plant growth and productivity. It is one of the most deficient macro-nutrients in agricultural soils after nitrogen and is considered inadequate for plant growth and production. To P availability in soils, the farmers are applying huge amounts of synthetic P fertilizers that adversely affect the wider environment, groundwater, soil fertility and microbial population. Many beneficial microbes are known to release and supply soluble P for improving growth and yield of a variety of plants in a sustainable manner… More >

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ARTICLE

First Report of Fusarium striatum Causing Root Rot Disease of Panax notoginseng in Yunnan, China

Phyton-International Journal of Experimental Botany, Vol.91, No.1, pp. 13-20, 2022, DOI:10.32604/phyton.2022.016972
Abstract Panax notoginseng is a traditional Chinese medicinal plant. Root rot of P. notoginseng is one of the most serious diseases affecting P. notoginseng growth and causes wilted leaves, fewer lateral roots and rotten roots. Root rot is a soil-borne disease, and mainly occurs from June to August in Yunnan Province when the temperatures are high and the air is humid. In this study, the endophytic fungal genus Fusarium isolate E-2018.1.22-#3.2 was obtained from a P. notoginseng embryo. Fusarium isolate E-2018.1.22-#3.2 was identified as Fusarium striatum based on morphological characteristics and molecular analysis. The fungus was found to have conidiophores and macroconidia,… More >

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2040

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Physiological and Biochemical Mechanisms of Exogenous Calcium Chloride on Alleviating Salt Stress in Two Tartary Buckwheat (Fagopyrum tataricum) Varieties Differing in Salinity Tolerance

Phyton-International Journal of Experimental Botany, Vol.91, No.8, pp. 1643-1658, 2022, DOI:10.32604/phyton.2022.019572
（This article belongs to the Special Issue: Plant Physiology for Crop Production and Sustainable Agriculture)
Abstract Salt stress is one of the most serious abiotic stresses limiting plant growth and development. Calcium as an essential nutrient element and important signaling molecule plays an important role in ameliorating the adverse effect of salinity on plants. This study aimed to investigate the impact of exogenous calcium on improving salt tolerance in Tartary buckwheat cultivars, cv. Xinong9920 (salt-tolerant) and cv. Xinong9909 (salt-sensitive). Four-week-old Tartary buckwheat seedlings under 100 mM NaCl stress were treated with and without exogenous calcium chloride (CaCl₂), Ca²⁺ chelator ethylene glycol tetraacetic acid (EGTA) and Ca²⁺-channel blocker lanthanum chloride (LaCl₃) for 10 days.… More >

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Biochar can Increase Chinese Cabbage (Brassica oleracea L.) Yield, Decrease Nitrogen and Phosphorus Leaching Losses in Intensive Vegetable Soil

Phyton-International Journal of Experimental Botany, Vol.91, No.1, pp. 197-206, 2022, DOI:10.32604/phyton.2022.016492
（This article belongs to the Special Issue: Comprehensive Effects of Biochar or other Additives after Applied to Agricultural and Forest Soils)
Abstract

There are few evidences on the effect of biochar on vegetable yield, nitrogen (N) and phosphorus (P) leaching losses under intensive vegetable production soil. The current field plot scale study evaluated responses of Chinese cabbage (Brassica oleracea L.) yield, N and P leaching losses using five N treatments of common N application rate according to local farmers’ practice (N100%), reducing 20% or 40% N fertilizer (N80% and N60%), and reducing 40% N fertilizer but incorporating 10 or 20 t/ha biochar (N60% + BC10 and N60% + BC20). Results showed that N80% and N60% decreased both the cabbage

… More >

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1688

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REVIEW

Morpho-Physiological, Biochemical and Molecular Adaptation of Millets to Abiotic Stresses: A Review

Phyton-International Journal of Experimental Botany, Vol.90, No.5, pp. 1363-1385, 2021, DOI:10.32604/phyton.2021.014826
Abstract Abiotic stresses such as drought, heat, cold, nutrient deficiency, excess salt and hazardous metals can hamper plantgrowth and development. Intensive agriculture of only a few major staple food crops that are sensitive and intolerant to environmental stresses has led to an agrarian crisis. On the other hand, nutritionally rich, gluten free and stress tolerant plants like millets are neglected and underutilized. Millets sustain about one-third of the world’s population and show exceptional tolerance to various abiotic and biotic stresses. Millets are C4 plants that are adapted to marginal and dry lands of arid and semi-arid… More >

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ARTICLE

Mycorrhizas Affect Polyphyllin Accumulation of Paris polyphylla var. yunnanensis through Promoting PpSE Expression

Phyton-International Journal of Experimental Botany, Vol.90, No.5, pp. 1535-1547, 2021, DOI:10.32604/phyton.2021.015697
（This article belongs to the Special Issue: Mycorrhizal Fungi and Sustainable Development of Agriculture)
Abstract Paris polyphylla var. yunnanensis is a traditional Chinese medicinal plant, in which polyphyllin as the main medicinal component is an important secondary metabolite with bioactivity. Arbuscular mycorrhizal fungi (AMF) have multiple positive effects on plants, while it is not clear whether AMF increase the content of medicinal components in medicinal plants. In this study, a total of nine AMF treatments were laid to analyze the mycorrhizal effect on polyphyllin accumulation and PpHMGR and PpSE expression of P. polyphylla var. yunnanensis. AMF increased the content of polyphyllin in the cultivated variety with low relation to the increase of inoculation intensity. More >

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Establishment of Rhodiola quadrifida Hairy Roots and Callus Culture to Produce Bioactive Compounds

Phyton-International Journal of Experimental Botany, Vol.90, No.2, pp. 543-552, 2021, DOI:10.32604/phyton.2021.013223
（This article belongs to the Special Issue: Plant Secondary Metabolites: Recent Advances and Opportunities)
Abstract Rhodiola quadrifida is a rare mountain medicinal plant whose root extracts are used in traditional Chinese medicine as a hemostatic, antitussive, and tonic in the treatment of gynecological diseases. The aim of the study was to obtain R. quadrifida cultures at different degrees of differentiation in vitro and compare their growth characteristics and the content of salidroside and rosavin. Hairy roots were obtained by incubating cotyledons and hypocotyls in a suspension of Agrobacterium rhizogenes strain A4. The presence of the rolB and rolC genes was proven by polymerase chain reaction. The obtained roots were cultivated in Murashige-Skoog medium (MS).… More >

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REVIEW

Carotenoids: New Applications of “Old” Pigments

Phyton-International Journal of Experimental Botany, Vol.90, No.4, pp. 1041-1062, 2021, DOI:10.32604/phyton.2021.015996
（This article belongs to the Special Issue: Plant Bioactive Compounds-Chemotaxonomic Significance, Antioxidant Properties, Potential Application as Food Ingredients as well as Therapeutics, and the Analytical Technology in Their Efficient Discovery)
Abstract Carotenoids represent a large group of mainly red, orange, and yellow natural metabolites mainly involved in regulation of many metabolic processes. Carotenoids are beneficial for human health. Current study describes the importance, chemical composition and functioning of carotenoids. It is well known that carotenoids support pigments acting in light absorbance mechanisms during photosynthesis, and are known to protect the chlorophyll molecules from oxidative stress and reactive oxygen species (ROS) damage. Carotenoids are involved in signaling processes in plants, responses to environmental stresses, pollination, germination and reproduction, and development regulation. As nutrients of strong antioxidant activity… More >

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Dynamic Expression Analysis and Introgressive Gene Identification of Fiber Length Using Chromosome Segment Substitution Lines from G. hirsutum × G. barbadense

Phyton-International Journal of Experimental Botany, Vol.90, No.1, pp. 129-144, 2021, DOI:10.32604/phyton.2021.012928
Abstract Fiber length is a critical trait that principally determines cotton spinning quality, while Upland cotton as the most widely cultivated Gossypium species around the world subjects to the relatively ordinary fiber performance. Chromosome segment substitution lines (CSSLs) have been introduced in cotton breeding to take full advantages of superior fiber quality and high yield from Sea Island and Upland cotton, respectively, which serve as ideal materials for elucidating the genetic mechanism of complex quantitative traits. Here, three CSSLs derived from CCRI45 (G. hirsutum) × Hai1 (G. barbadense), two superior (MBI7561 and MBI7747) and one (MBI7285) with ordinary… More >

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REVIEW

Insights into the Roles of Melatonin in Alleviating Heavy Metal Toxicity in Crop Plants

Phyton-International Journal of Experimental Botany, Vol.90, No.6, pp. 1559-1572, 2021, DOI:10.32604/phyton.2021.016692
Abstract Alleviating heavy metal pollution in farmland soil, and heavy metal toxicity in plants is the focus of global agricultural environmental research. Melatonin is a kind of indoleamine compound that wide exists in organisms; it is currently known as an endogenous free radical scavenger with the strongest antioxidant effect. As a new plant growth regulator and signaling molecule, melatonin plays an important role in plant resistance to biotic or abiotic stress. Recent studies indicate that melatonin can effectively alleviate heavy metal toxicity in crop plants, which provides a new strategy to minimize heavy metal pollution in… More >

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In vitro Antibacterial Activity of Moringa oleifera Ethanolic Extract against Tomato Phytopathogenic Bacteria

Phyton-International Journal of Experimental Botany, Vol.90, No.3, pp. 895-906, 2021, DOI:10.32604/phyton.2021.014301
（This article belongs to the Special Issue: Plant Secondary Metabolites: Recent Advances and Opportunities)
Abstract The tomato (Solanum lycopersicum L.) is one of the world’s most important vegetable crops. Still, phytopathogenic bacteria affect the yield and quality of tomato cultivation, like Agrobacterium tumefeciens (At), Clavibacter michiganensis subsp. michiganensis (Cmm), Pseudomonas syringae pv. tomato (Pst), Ralstonia solanacearum (Rs), and Xanthomonas axonopodis (Xa). Synthetic chemical products are used mostly on disease plant control, but overuse generates resistance to bacterial control. This study aimed to evaluate the in vitro antibacterial activity of the ethanolic extract of Moringa oleifera Lam. leaves against At, Cmm, Pst, Rs, and Xa, as well as information about this plant species’ chemical composition. Antibacterial activity against pathogens observed by microplate technique, phytochemical screening, More >

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Benzyl Amino Purine and Gibberellic Acid Coupled to Nitrogen-Limited Stress Induce Fatty Acids, Biomass Accumulation, and Gene Expression in Scenedesmus Obliquus

Phyton-International Journal of Experimental Botany, Vol.90, No.2, pp. 515-531, 2021, DOI:10.32604/phyton.2021.013619
Abstract The need for renewable energy sources makes microalgae an essential feedstock for biofuels production. The molecular aspects and the response to nitrogen (N)-limited conditions with a phytohormone stimulus in microalgae have been slightly explored. In this work, Scenedesmus obliquus was used as a study model to analyze the effect of benzyl amino purine (BAP) and gibberellic acid (GA) coupled to nitrogen limitation on cell growth, biomass and fatty acids. The selected 10^-5 M BAP increased the biomass by 1.44-fold, and 10^-6 M GA by 1.35-fold. The total lipids also increased by 2.8 and 1.11-fold, respectively. The 10^-5 M… More >

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Non-Polar Chemical Constituents of Atemoya and Evaluation of the Cytotoxic and Antimicrobial Activity

Phyton-International Journal of Experimental Botany, Vol.90, No.3, pp. 921-931, 2021, DOI:10.32604/phyton.2021.013305
Abstract This study aimed to identify the chemical composition of essential oil from fruits (EOAF) and the hexanic crude extract from aerial parts (At-Hex) of atemoya (Annona cherimola x Annona squamosa), a hybrid belonging to the Annonaceae family. Cytotoxic and antimicrobial activity was also evaluated. OEAF was obtained by hydrodistillation using a Clevenger apparatus, and their composition was analyzed by gas chromatography-mass spectrometry (GC-MS) analyses. Cytotoxicity was tested against human tumor cell lines HCT-116 (colon carcinoma), SF-295 (glioblastoma), OVCAR-8 (ovarian carcinoma) and HL60 (leukemia) using 3-(4,5-dimethyl-2-thiazolyl)-2,5- diphenyl-2H-tetrazolium bromide (MTT) assay, while antimicrobial activity was conducted by bioauthography method More >

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Foliar Application of Phosphorus Enhances Photosynthesis and Biochemical Characteristics of Maize under Drought Stress

Phyton-International Journal of Experimental Botany, Vol.90, No.2, pp. 503-514, 2021, DOI:10.32604/phyton.2021.013588
Abstract Water is essential for the growth period of crops; however, water unavailability badly affects the growth and physiological attributes of crops, which considerably reduced the yield and yield components in crops. Therefore, a pot experiment was conducted to investigate the effect of foliar phosphorus (P) on morphological, gas exchange, biochemical traits, and phosphorus use efficiency (PUE) of maize (Zea mays L.) hybrids grown under normal as well as water deficit situations at the Department of Agronomy, University of Agriculture Faisalabad, Pakistan in 2014. Two different treatments (control and P @ 8 kg ha⁻¹ ) and four hybrids… More >

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