Tao Zhang^*, Hongbing Yang

Phyton-International Journal of Experimental Botany, Vol.91, No.8, pp. 1643-1658, 2022, DOI:10.32604/phyton.2022.019572

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 >

Wenting Wu¹ , Yajing Zhang¹, Yu Gao¹, Kai Zhang^2,3, Luying Zhu^1,3,*, Hongxia Zhang^2,3

Phyton-International Journal of Experimental Botany, Vol.91, No.8, pp. 1629-1642, 2022, DOI:10.32604/phyton.2022.020515

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 >

Dalila Jacqueline Escudero-Almanza¹, Oscar Cruz-Alvarez¹, Ofelia Adriana Hernández-Rodríguez¹, Juan Luis Jacobo-Cuellar¹, Esteban Sánchez-Chávez², Pablo Preciado-Rángel³, Dámaris Leopoldina Ojeda-Barrios^1,*

Phyton-International Journal of Experimental Botany, Vol.91, No.6, pp. 1141-1152, 2022, DOI:10.32604/phyton.2022.019129

Abstract Pecan [Carya illinoinensis (Wangenh.) K. Koch.] is a deciduous tree whose fruits (nuts) are of high economic value and offer excellent nutritional benefits. However, soils high in sulphates can limit its growth and development. Working with 5-year-old trees of ‘Western Schley’ pecan grown in soils high in sulphates, the levels of proline and oxidative metabolism were recorded in the leaflets. Results showed that different levels of visible leaflet damage (‘sufficiency’, ‘low’, ‘moderate’ or ‘severe’) were associated with different levels of leaflet sulphates (mg kg⁻¹): ‘sufficiency’ (≤40), ‘low’ (41–60), ‘moderate’ (61–80) and ‘severe’ (80–100). ‘Severe’ sulphate damage was associated with significant… More >

Zeenat Mushtaq¹, Shahla Faizan¹, Basit Gulzar², Humira Mushtaq³, Sayyada Bushra¹, Alisha Hussain¹, Khalid Rehman Hakeem^4,*

Phyton-International Journal of Experimental Botany, Vol.91, No.1, pp. 149-168, 2022, DOI:10.32604/phyton.2022.016231

Abstract Salinity is one of the most severe abiotic stresses for crop production. The present study investigates the salinity-induced modulation in growth indicators, morphology and movement of stomata, photosynthetic pigments, activity of carbonic anhydrase as well as nitrate reductase, and antioxidant systems in two varieties of chickpea (Pusa-BG5023, and Pusa-BGD72). On 20^th day of sowing, plants were treated with varying levels of NaCl (0, 50, 100, 150 and 200 mM) followed by sampling on 45 days of sowing. Recorded observations on both the varieties reveal that salt stress leads to a significant decline in growth, dry biomass, leaf area, photosynthetic pigments,… More >

Min Yan¹, Han Wang¹, Shaohua Liu¹, Ye Xu¹, Zizhuo Nie¹, Yifeng Zhou², Li Li^2,*

Phyton-International Journal of Experimental Botany, Vol.90, No.4, pp. 1293-1300, 2021, DOI:10.32604/phyton.2021.015601

Abstract Rho-related GTPase from plants (ROP) proteins play an essential role in plant stress resistance. In this study, the full-length GlROP6 gene was cloned based on G. littoralis transcriptome sequencing data acquired in response to salt stress. The protein sequence, conserved domains, secondary structure, three-dimensional structure, phylogenetic relationships, and expression pattern of the GlROP6 gene were systematically analysed. Our results showed that the full-length GlROP6 gene had an open reading frame of 606 bp, which encoded 201 amino acid residues with a relative molecular weight of 22.23463 kDa and a theoretical isoelectric point of 9.06. Amino acid sequence analyses indicated that… More >

CHUNKUN FAN, YONGPENG ZHANG, CHUNBAO YANG, YAWEI TANG, JI QU, BU JIE, DEJI QUZHEN, LIYUN GAO^*

BIOCELL, Vol.45, No.4, pp. 1121-1135, 2021, DOI:10.32604/biocell.2021.014336

Abstract Salinity is a serious challenge for agriculture production by limiting the arable land. Rice is a major staple food crop but very sensitive to salt stress. In this study, we used Arabidopsis for the functional characterization of a rice F-box gene LOC_Os04g48270 (OsPP12-A13) under salinity stress. OsPP12-A13 is a nuclear-localized protein that is strongly upregulated under salinity stress in rice and showed the highest expression in the stem, followed by roots and leaves. Two types of transgenic lines for OsPP12-A13 were generated, including constitutive tissue over-expression using the CaMV35S promoter and phloem specific over-expression using the pSUC2 promoter. Both types… More >

Abdulkhaliq Alshoaibi^*

Phyton-International Journal of Experimental Botany, Vol.90, No.3, pp. 731-745, 2021, DOI:10.32604/phyton.2021.015476

Abstract Seeds of three Saudi pearl millet cultivars (Pennisetum spicatum) from three regions (Madinah, Khulais and Jaizan) were inoculated with arbuscular mycorrhizal fungus Glomus mosseae obtained from the Agriculture Research Center of Giza, Egypt to enhance their salt tolerance. Five different NaCl concentrations (0, 30, 60, 90, and 120 mM) were used for treating cultivars with and without mycorrhiza. Growth rates, chlorophyll content, chlorophyll fluorescence (Fv/Fm), proline content and gas exchange were measured to determine the effect of salinity on these cultivars. The results indicated that compared to cultivars without mycorrhiza, all cultivars with mycorrhiza had enhanced growth and physiological parameters… More >

Hesham F. Alharby¹, Mirza Hasanuzzaman^2,*, Hassan S. Al-Zahrani¹, Khalid Rehman Hakeem¹

Phyton-International Journal of Experimental Botany, Vol.90, No.2, pp. 373-388, 2021, DOI:10.32604/phyton.2021.013657

Abstract The mechanism of selenium (Se)-induced salt tolerance was studied in moderately sensitive soybean (Glycine max L.) plants. To execute this view, soybean plants were imposed with salt stress (EC 6 dS m⁻¹ ) applying NaCl. In other treatments, Se (0, 25, 50 and 75 µM Na₂SeO₄) was sprayed as co-application with that level of salt stress. Plant height, stem diameter, leaf area, SPAD value decreased noticeably under salt stress. Altered proline (Pro) level, together with decreased leaf relative water content (RWC) was observed in salt-affected plants. Salt stress resulted in brutal oxidative damage and increased the content of H₂O₂, MDA… More >

Hua Zhang^#, Zhongmin Yang^#, Xilong You, Youqiang Heng, Yan Wang^*

Phyton-International Journal of Experimental Botany, Vol.90, No.2, pp. 389-402, 2021, DOI:10.32604/phyton.2021.014156

Abstract Potassium (K⁺) is a necessary nutrient for plant growth and crop production. The K⁺ transporter plays crucial roles in the absorption and transport of K⁺ in plants. Most K⁺ transporters in Arabidopsis have been reported, but AtKUP12, which is a member of the KT/KUP/HAK family, has not yet been the subject of relevant in-depth research. In the present study, we demonstrated that AtKUP12 plays a crucial role in K⁺ uptake in Arabidopsis under 100 μM lowK⁺ and 125 mM salt stress conditions. AtKUP12 transcripts were induced by K⁺ deficiency and salt stress. We analyzed the K⁺ uptake of AtKUP12 using… More >

Jiangchun Chen¹, Zhenhua Wang^1,2,*, Jinzhu Zhang¹, Weibin Cao¹

Intelligent Automation & Soft Computing, Vol.26, No.5, pp. 949-959, 2020, DOI:10.32604/iasc.2020.010127

Abstract This study adopted the method of barrel planting to artificially set the salt content of six different soils (CK:1.5 g kg^-1 , T1:3.0 g kg^-1 , T2:4.0 g kg^-1 , T3:5.3 g kg^-1 , T4:6.2 g kg^-1 , T5:7.3 g kg^-1 ) to study the effects of different degrees of mild salt stress on photosynthetic physiology, growth index and yield of cotton under drip irrigation. The results showed that with the increasing salt stress and the prolongation of stress time, the photosynthetic physiological indexes of cotton showed a downward trend (P < 0.01), and the plant height and leaf area… More >