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61.
Physiological,biochemical, and proteome profiling reveals key pathways underlying the drought stress responses of Hippophae rhamnoides
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The effects of drought on plant growth and development are occurring as a result of climate change and the growing scarcity of water resources. Hippophae rhamnoides has been exploited for soil and water conservation for many years. However, the outstanding drought‐resistance mechanisms possessed by this species remain unclear. The protein, physiological, and biochemical responses to medium and severe drought stresses in H. rhamnoides seedlings are analyzed. Linear decreases in photosynthesis rate, transpiration rate, and the content of indole acetic acid in roots, as well as a linear increase in the contents of abscisic acid, superoxide dismutase, glutathione reductase, and zeatin riboside in leaves are observed as water potential decreased. At the same time, cell membrane permeability, malondialdehyde, stomatal conductance, water use efficiency, and contents of zeatin riboside in roots and indole acetic acid in leaves showed nonconsistent changes. DIGE and MS/MS analysis identified 51 differently expressed protein spots in leaves with functions related to epigenetic modification and PTM in addition to normal metabolism, photosynthesis, signal transduction, antioxidative systems, and responses to stimuli. This study provides new insights into the responses and adaptations in this drought‐resistant species and may benefit future agricultural production. 相似文献
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Tian Zhang 《Autophagy》2016,12(8):1411-1412
In eukaryotic cells, the macroautophagy pathway has been implicated in the degradation of long-lived proteins and damaged organelles. Although it has been demonstrated that macroautophagy can selectively degrade specific targets, its contribution to the basal turnover of cellular proteins had previously not been quantified on proteome-wide scales. In a recent study, we utilized dynamic proteomics to provide a global comparison of protein half-lives between wild-type and autophagy-deficient cells. Our results indicated that in quiescent fibroblasts, macroautophagy contributes to the basal turnover of a substantial fraction of the proteome. However, the contribution of macroautophagy to constitutive protein turnover is variable within the proteome. The methodology outlined in the study provides a global strategy for quantifying the selectivity of basal macroautophagy. 相似文献
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Dynamic metabolic and transcriptomic profiling of methyl jasmonate‐treated hairy roots reveals synthetic characters and regulators of lignan biosynthesis in Isatis indigotica Fort
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Xiaofei Chen Qing Li Hexin Tan Xin Dong Ying Xiao Langdong Chen Wansheng Chen 《Plant biotechnology journal》2016,14(12):2217-2227
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《Molecular & cellular proteomics : MCP》2019,18(12):2506-2515
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- •Method for the analysis of response curves from thermal proteome profiling (TPP).
- •NPARC uses nonparametric statistics and provides false discovery-rate (FDR) control.
- •Increased proteome coverage and sensitivity to identify drug-binding proteins.
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