| 1 | 冷冻电镜技术在分子植物学研究中的应用显示文摘植物体的各项生理活动依赖于分子水平上多种植物蛋白质/蛋白质复合体的相互作用和动态变化,了解这些蛋白质/蛋白质复合体的结构和功能对于研究相关植物生理活动的分子机理至关重要。得益于最近的技术进步——包括直接电子探测器的发展和先进的图像处理算法,冷冻电镜技术已经逐步发展成为研究蛋白质/蛋白质复合体的重要技术手段,这也为深入理解植物生理活动分子机理提供了结构生物学研究利器。目前,冷冻电镜技术在分子植物学研究领域的应用仍处于早期,对于一些重要蛋白质复合体的结构功能研究还不够深入。本文在对冷冻电镜技术发展历史进行简要回顾的基础上,对近年来人们利用冷冻电镜技术在植物光合作用、胁迫响应等方面进行的分子机理研究进行了梳理,旨在为加强分子植物学和冷冻电镜技术两个研究领域的合作提供有益参考。 | 殷国良 孙文浩 庞效云 孙飞 | 2022 | 生物技术通报2022，38，1： | 1 |
| 2 | Physiological Dynamics and Transcriptomic Analysis of Cut Roses‘Carola’Treated with KNO_(3)显示文摘The consumption of cut roses(Rosa hybrida)has always ranked first in the world.However,it is vulnerable to rapid petal and leaf wilting due to leaf stomatal water loss,which seriously affects its ornamental quality and economic value.Stomatal movement,a key in plant physiological processes,is influenced by potassium and nitrate.Advancing comprehension of its physiological and molecular mechanism holds promise for preserving the freshness of cut roses.This study observed the impacts of different concentrations of KNO_(3) vase treatments on stomatal opening and water loss in cut rose‘Carola’leaves,as well as their transcriptional responses to KNO_(3).Water loss rates were influenced by KNO_(3) concentrations,with the 25 and 75 mmol/L treatments exhibiting the highest water loss rates.The stomatal aperture reached its widest value when treated with 75 mmol/L KNO_(3).Transcriptional sequencing analysis was performed to identify differentially expressed genes(DEGs)of which 5456 were up-regulated,and 6607 were down-regulated associated with photosynthesis,starch and sucrose metabolism,metabolic pathways,plant-pathogen interaction,plant hormone signal transduction,and related pathways.246 DEGs were selected related to response to KNO_(3) treatment,of which gene ontology(GO)enrichment were nitrate and terpenoid metabolism,ion transport,and response to stimuli.Further heatmap analysis revealed that several genes related to nitrate transport a metabolism,K+transport,vacuoles,and aquaporin were in close association with the response to KNO_(3) treatment.Weighted gene co-expression network analysis(WGCNA)revealed that hub genes,including LAX2,TSJT1,and SCPL34 were identified in turquoise,black,and darkgreen module.Transcription factors such as NAC021,CDF3,ERF053,ETR2,and ARF6 exhibited regulatory roles in the response to KNO_(3) treatment under light conditions.These findings provide valuable insights into the physiological and molecular mechanisms underlying the response of cut rose leaves to KNO_(3) treatment. | Songmei Liu Yuheng Wu Hongmei Li Dongli Cai Huiling Liang Changchun Ye Shenggen He | 2023 | Phyton-International Journal of Experimental Botany2023，92，12： | 0 |
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