Ecological interactions between flowers and pollinators greatly affect the plant reproductive success. To facilitate these interactions, many flowers are known to display their attractive qualities in a rhythmic fashion. In this issue, Hou et al. found that Trifolium repens could increase reproductive fitness by accurate pollination. The most suitable flower angle saved pollinators' visiting energy and enabled them to obtain the highest nectar rewards (nectar secretion and number of pollen grains). This coordination between plants and pollinators maximized the interests of them, which is a crucial factor in initiating specialized plant-pollinator relationships.
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Md. Abir Ul Islam1, Juthy Abedin Nupur2, Charles T. Hunter3, Abdullah Al Mamun Sohag4, Ashaduzzaman Sagar5, Md. Sazzad Hossain6, Mona F. A. Dawood7,*, Arafat Abdel Hamed Abdel Latef8, Marián Brestič9,10, Md. Tahjib-UI-Arif4,*
Phyton-International Journal of Experimental Botany, Vol.91, No.8, pp. 1557-1583, 2022, DOI:10.32604/phyton.2022.021556
Abstract Moringa leaf extract (MLE) has been shown to promote beneficial outcomes in animals and plants. It is rich in amino acids, antioxidants, phytohormones, minerals, and many other bioactive compounds with nutritional and growth-promoting potential. Recent reports indicated that MLE improved abiotic stress tolerance in plants. Our understanding of the mechanisms underlying MLE-mediated abiotic stress tolerance remains limited. This review summarizes the existing literature on the role of MLE in promoting plant abiotic stress acclimation processes. MLE is applied to plants in a variety of ways, including foliar spray, rooting media, and seed priming. Exogenous application of MLE promoted crop plant… More >
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Qinhui Zhang1,2,#, Xiaona Pei1,#, Lianfeng Xu3,#, Xianbo Lu2, Baoyang Wen3, Yanlong Li4, Liankui Wang4, Guangzhi Dong4, Wanling Shi4, Xiaoqing Hu1,*, Xiyang Zhao1,2,*
Phyton-International Journal of Experimental Botany, Vol.91, No.8, pp. 1585-1599, 2022, DOI:10.32604/phyton.2022.020372
Abstract Birch (Betula platyphylla Suk.), distributed in Eurasia, North America, and Australia, is a kind of cold-resistant, fast-growing, and vital pulpwood tree species. It is also one of the most important ecological restoration tree species with high values of economic benefits in Northeast China. To improve the genetic gain and expand the economic benefit of B. platyphylla, many genetic improvements have been carried out. In China, B. platyphylla is widely distributed and varied, and there are many varieties with excellent genetic characteristics. In this paper, the genetic improvement of B. platyphylla was reviewed, and the previous research results were discussed from… More >
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Jingkang Zhang1, Shiyuan Zhang1, Changhao Niu1,2, Jiang Jiang1,2, Haijun Sun1,2,*
Phyton-International Journal of Experimental Botany, Vol.91, No.8, pp. 1601-1616, 2022, DOI:10.32604/phyton.2022.020323
Abstract Soil degradation threatens the forest sustainable productivity, particularly in afforestation system. Biochar derived from agroforestry waste or biomass can potentially improve the degraded forest soil and promote the tree growth. To expand the application of biochar for forestry productivity improvement, we here reviewed the effects and the underlying mechanisms of biochar on the degraded forest soil and tree growth. Totally 96 studies that conducted from pot to field investigations in China were summarized. The result suggested that biochar generally exerted positive effects on restoration of degraded forest soil such as that with compaction, acidification or soil erosion, which are mainly… More >
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Qinzheng Hou#, Wenjuan Shao#, Nurbiye Ehmet#, Taihong Wang, Yifan Xu, Kun Sun*
Phyton-International Journal of Experimental Botany, Vol.91, No.8, pp. 1617-1628, 2022, DOI:10.32604/phyton.2022.020768
（This article belongs to this Special Issue: Plant–Environment Interactions)
Abstract Ecological interactions between flowers and pollinators greatly affect the reproductive success. To facilitate these interactions, many flowers are known to display their attractive qualities, such as scent emission, flower rewards and floral vertical direction, in a rhythmic fashion. However, less is known about how plants regulate the relationship between these flower traits to adapt to pollinator visiting behavior and increase reproduction success. Here we investigated the adaptive significance of the flower bending from erect to downward in Trifolium repens. We observed the flowering dynamic characteristics (changes of vertical direction of florets, flowering number, pollen grain numbers, pollen viability and stigma… More >
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Wenting Wu1 , Yajing Zhang1, Yu Gao1, Kai Zhang2,3, Luying Zhu1,3,*, Hongxia Zhang2,3
Phyton-International Journal of Experimental Botany, Vol.91, No.8, pp. 1629-1642, 2022, DOI:10.32604/phyton.2022.020515
（This article belongs to this Special Issue: Symbiotic Associations for Nutrients Management and Complexes Formation for Better Agricultural Crops Productivity under Biotic and Abiotic Stresses)
Abstract Leymus mollis, a wild relative of wheat, is very tolerant to salt stress, and has been considered as a valuable genetic
resource for wheat breeding. However, the genetic basis for salt tolerance of this species is still largely unknown. In
this study, de novo sequencing, assembly and analysis of L. mollis transcriptome in response to salt stress was
performed. A total of 110,323 and 112,846 unigenes were generated for the NaCl-free (CK) and 180 mM
NaCl-treated (CT) library, respectively. For the two libraries, 73,414 unigenes were successfully annotated in five
common protein databases, and 7521 differentially expressed genes (DEGs) between… More >
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Tao Zhang*, Hongbing Yang
Phyton-International Journal of Experimental Botany, Vol.91, No.8, pp. 1643-1658, 2022, DOI:10.32604/phyton.2022.019572
（This article belongs to this 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. Then, some important… More >
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Dabing Xiang1,#, Yue Song1,#, Chao Song2, Yan Wan1, Xueling Ye1, Changying Liu1, Chenggang Liang3, Gang Zhao1,*
Phyton-International Journal of Experimental Botany, Vol.91, No.8, pp. 1659-1669, 2022, DOI:10.32604/phyton.2022.020338
Abstract A low seed-setting rate is the main limiting factor influencing Tartary buckwheat production under high-yield cultivation conditions. To investigate the seed setting and its spatial characteristics, two Tartary buckwheat cultivars (high seed-setting rate cultivar Qianku 3; low seed-setting rate cultivar Liuku 3) were compared by a two-year field trial in 2017 and 2018. The results showed that the Tartary buckwheat underwent simultaneous flowering and fruiting. Flowers, generated from branch, were still blooming during the mature stage of grains on stem, which resulting in a greater number of flowers and grains on the branch than those on the stem at the… More >
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Shiqin Yang1,2,#, Tao Jiang3,#, Peilin Shen1, Shengjie Ren3, Zhun Gu1, Fangjun Feng2, Yunpeng Peng2,4, Wei Wang5, Kai Xu2,*
Phyton-International Journal of Experimental Botany, Vol.91, No.8, pp. 1671-1686, 2022, DOI:10.32604/phyton.2022.018996
（This article belongs to this Special Issue: High-Yield Rice Physiology & Genetics)
Abstract Plant height is an important morphological trait that affects crop yield. Several genes related to plant height and yield have been reported in rice (Oryza sativa L.), however, the molecular mechanism underlying the regulation of these traits is still not completely understood. VP64 is widely used as a transcriptional activator to investigate the biological function of genes encoding transcription factors. Here, we identified a novel bZIP transcription factor OsbZIP62 that is involved in modulating agronomic traits in rice. Overexpression of OsbZIP62-VP64 (OsbZIP62V) significantly increases the plant height and yield per plant in rice. RNA-seq analysis showed that some plant height… More >
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Uttam Kumer Sarker1, Md. Romij Uddin1,*, Ahmed Khairul Hasan1, Md. Abdur Rahman Sarkar1, Md. Abdus Salam1, Md. Alamgir Hossain2, Eldessoky S. Dessoky3, Ismail A. Ismail3
Phyton-International Journal of Experimental Botany, Vol.91, No.8, pp. 1687-1708, 2022, DOI:10.32604/phyton.2022.020645
（This article belongs to this Special Issue: High-Yield Rice Physiology & Genetics)
Abstract In irrigated agricultural systems, nitrogen (N) and water are the vital resources for sustainability of the crop production in the modern era of climate change. The current study aimed to assess the impact of water and N management on the productivity of irrigated rice cultivars. In the context, a field observation was done at the research
farm of Bangladesh Agricultural University, Mymensingh, during dry seasons in consecutive two years (2018–2019 and 2019–2020). The experiments were set up following split-plot design assigning water management in
the main plots, nitrogen management in the sub-plots, and the cultivars were approved in the split-split… More >
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ARTICLE
Jing Qu1, Shuang Liu2, Peng Jiao2, Zhenzhong Jiang2, Jianbo Fei2, Shuyan Guan1,*, Yiyong Ma1,*
Phyton-International Journal of Experimental Botany, Vol.91, No.8, pp. 1709-1719, 2022, DOI:10.32604/phyton.2022.018854
Abstract To develop cold-tolerant maize germplasms and identify the activation of INDUCER OF CRT/DRE-BINDING FACTOR EXPRESSION (ICE1) expression in response to cold stress, RT-PCR was used to amplify the complete open reading frame sequence of the ICE1 gene and construct the plant expression vector pCAMBIA3301-ICE1-Bar. Immature maize embryos and calli were transformed with the recombinant vector using Agrobacterium tumefaciens-mediated transformations. From the regenerated plantlets, three T1 lines were screened and identified by PCR. A Southern blot analysis showed that a single copy of the ICE1 gene was integrated into the maize (Zea mays L.) genomes of the three T1 generations. Under… More >
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