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相关概念视频

Responses to Heat and Cold Stress02:45

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Every organism has an optimum temperature range within which healthy growth and physiological functioning can occur. At the ends of this range, there will be a minimum and maximum temperature that interrupt biological processes.
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From Water to Land
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Plant cells communicate to coordinate their cycle of growth, flowering and fruiting, and activities in roots, shoots, and leaves in response to the changing environmental conditions. Plant signaling is distinct from animal signaling. Plants primarily utilize enzyme-linked receptors, whereas the largest class of cell-surface receptors in animals are G-protein coupled receptors (GPCRs). Unlike animals, receptor tyrosine kinases are rare in plants. Instead, plants have a diverse class of...
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Adaptations that Reduce Water Loss01:57

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Though evaporation from plant leaves drives transpiration, it also results in loss of water. Because water is critical for photosynthetic reactions and other cellular processes, evolutionary pressures on plants in different environments have driven the acquisition of adaptations that reduce water loss.
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Chloroplasts are triple membrane structures with an outer membrane, an inner membrane, and a thylakoid membrane, each containing distinct metabolite transporters, membrane translocons, and enzymes. Appropriate sorting and translocating these proteins to their correct membrane systems is essential for chloroplast function.
Protein complexes called the translocon of the outer chloroplast membrane or TOC complex, and the translocon of the inner chloroplast membrane or TIC complex mediate the...
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Protein Transport to the Outer Chloroplast Membrane01:11

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Chloroplast outer membrane proteins encoded by the nucleus are synthesized in the cytosol. Soon after synthesis, they bind cytosolic factors such as 14-3-3 protein and the Hsp70 chaperones that keep these precursors in an unfolded state until their translocation.
Two models describe the mechanism of precursor recognition and entry across the outer membrane through the TOC complex. Model 1 suggests the newly synthesized precursor binds to the TOC receptor 159 and forms a complex.
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相关实验视频

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Generating Homo- and Heterografts Between Watermelon and Bottle Gourd for the Study of Cold-responsive MicroRNAs
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葡萄树中的解码 VaCOLD1 功能:一种增强寒冷应激耐受性的膜蛋白.

Qiaoling Zheng1,2,3, Qinhan Yu1,2,3, Wenkong Yao4,2,3

  • 1School of Life Science, Ningxia University, Yinchuan, Ningxia 750021, China.

Journal of agricultural and food chemistry
|December 1, 2023
PubMed
概括

葡萄树对寒冷的耐受性包括VaCOLD1,这是一种增强寒冷耐受力的蛋白质. VaCOLD1增强了CBF-COR通路,提高了植物对寒冷压力的抵抗力.

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阿巴阿巴阿巴是什么意思在CBF-COR路径上.这是VaCOLD1的.这就是VaGPA1的原因.维蒂斯·阿穆伦塞斯 (Vitis amurensis) 是一种葡萄.寒冷的压力反应反应.

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科学领域:

  • 植物生物学 植物生物学
  • 分子生物学分子生物学
  • 压力生理学 压力生理学

背景情况:

  • 低温压力是全球葡萄种植的主要挑战.
  • 米中已知的感冒受体COLD1的功能在葡萄树的感冒信号中尚不清楚.

研究的目的:

  • 确定和描述VaCOLD1在葡萄树寒冷应激反应中的作用.
  • 阐明VaCOLD1介导的寒冷耐受性背后的分子机制.

主要方法:

  • 在Vitis amurensis中识别和定位VaCOLD1.
  • 在Arabidopsis thaliana中分析VaCOLD1表达模式和促进剂活性.
  • 研究VaCOLD1和VaGPA1.1之间的相互作用.
  • 评估转基因阿拉比多普西斯和过度表达VaCOLD的葡萄的寒冷耐受性1.1.

主要成果:

  • 一种跨膜蛋白 VaCOLD1 局限于血和 ER 膜,并且广泛表达.
  • 寒冷和其他环境压力诱导VaCOLD1的表达.
  • VaCOLD1与VaGPA1相互作用,它们的联合表达增强了耐寒能力.
  • 过度表达VaCOLD1通过激活CBF-COR通路并调节ABA介导的基因表达,改善了Arabidopsis的寒冷耐受性.

结论:

  • 在葡萄树寒冷应激反应中,VaCOLD1起着至关重要的作用.
  • 通过CBF-COR通路,VaCOLD1-VaGPA1复合体通过CBF-COR通路调解冷耐受性.
  • 通过管理透应激和ABA信号传递,VaCOLD1有助于寒冷适应.