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Higher PEPC activity and vein density contribute to improve cotton leaf water use efficiency under water stress.
Plant Biol (Stuttg)
January 2025
Key Laboratory of Oasis Eco-agriculture, Xinjiang Production and Construction Corps, Shihezi University, Shihezi, China.
Plants with the C photosynthetic pathway can withstand water stress better than plants with C metabolism. However, it is unclear whether C photosynthesis can be preliminarily activated in droughted cotton leaves, and if this contributes to increase in water use efficiency (WUE). An upland cotton (Gossypium hirsutum L.
View Article and Find Full Text PDFMesophyll conductance reductions due to drought stress are influenced by increases in cell wall chelator-soluble pectin content and denser microfibril alignment in cotton.
J Exp Bot
January 2025
Key Laboratory of Oasis Eco-agriculture, Xinjiang Production and Construction Corps, Shihezi University, Shihezi, 832003, China.
Plants commonly undergo leaf morphoanatomy and composition modifications to cope with drought stress, and these tend to reduce mesophyll conductance to CO2 diffusion (gm), a key limitation to photosynthesis. The cell wall appears to play a crucial role in this reduction, yet the specific effect of cell wall compositions on gm and the underlying regulatory mechanisms of cell wall thickness (Tcw) variation are not well understood. In this study, we subjected cotton plants to varying levels of water deficit to investigate the impact of leaf cell wall composition and the arrangement patterns of microfibrils within cell walls on Tcw and leaf gas exchange.
View Article and Find Full Text PDFPhosphorylation of Arabidopsis NRT1.1 regulates plant stomatal aperture and drought resistance in low nitrate condition.
BMC Plant Biol
January 2025
MOE Key Laboratory of Bioinformatics, Tsinghua-Peking Center for Life Science, School of Life Sciences, Tsinghua University, Beijing, 100084, China.
Background: NITRATE TRANSPORTER 1.1 (NRT1.1) functions as a dual affinity nitrate transceptor regulated by phosphorylation at threonine residue 101 (T101).
View Article and Find Full Text PDFSphingolipid remodeling in the plasma membrane is essential for osmotic stress tolerance in Arabidopsis.
Plant Physiol
January 2025
State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory of Plant Stress Biology, School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, P R China.
Osmotic stress caused by drought, salinity, or cold conditions is an important abiotic factor that decreases membrane integrity and causes cell death, thus decreasing plant growth and productivity. Remodeling cell membrane composition via lipid turnover can counter the loss of membrane integrity and cell death caused by osmotic stress. Sphingolipids are important components of eukaryotic membrane systems; however, how sphingolipids participate in plant responses to osmotic stress remains unclear.
View Article and Find Full Text PDFDrought Adaptation and Responses of Vary Among Different Regions: Evidence From Growth, Physiology, and RNA-Seq Transcriptome Analysis.
Ecol Evol
January 2025
Department of Plant Biology and Ecology, College of Life Science Nankai University Tianjin P. R. China.
In the context of global climate change, exploring how plant adaptation and responses to drought vary among different regions are crucial to understanding and predicting its geographic distribution. In this study, to explore the drought adaptation and responses of the dominant species in the semi-arid Eurasian Steppes and their differences among the different regions in terms of growth, physiology, and RNA-seq transcriptome, was chosen as the study material, and a seed source (three regions: eastern, middle, and western regions) × soil moisture treatment (three treatments: control, light drought, and heavy drought) two-factor experiment was conducted. (1) Four growth traits for individuals from the western region were significantly lower than those from the other two regions.
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