报告题目:叶绿体逆行信号的演化促进绿色植物适应陆地
Evolution of Chloroplast Retrograde Signalling Facilitates Green Plant Adaptation to Land
报告人:陈仲华,澳大利亚,西悉尼大学科学与健康学院
报告人简介:陈仲华副教授现任澳大利亚西悉尼大学科学与健康学院副院长。在作物生理、植物生物技术与电生理学领域具有15年的研究经历,目前主讲可持续农业与食品安全、自然科学与科学规划等本科课程,联合指导9名博士研究生。他在农业和植物科学领域开展了卓有成效的研究工作,已发表SCI论文近80篇,在PNAS、Trends in Plant Science、eLife,Plant Cell,Molecular Plant、Plant Physiology等影响因子5以上的高水平期刊发表30篇,累计引用数超过3400次,个人h指数28。他自2013年起担任Plant Growth Regulation期刊主编和50种国际期刊审稿人。他在近五年获得大量研究经费和一系列科研奖励与荣誉,包括2013年澳大利亚农业部部长奖、2013年农渔林业科学和创新杰出青年奖和2014年澳洲科研理事会探索青年科学家奖。
Evolution of Chloroplast Retrograde Signalling Facilitates Green Plant Adaptation to Land
Abstract: Chloroplast retrograde signaling networks are vital for chloroplast biogenesis, operation and signaling, including excess light and drought stress signaling. To date, retrograde signaling has been considered in the context of land plant adaptation, but not for the origin and evolution of signaling cascades linking chloroplast function to stomatal regulation. We show that key elements of the chloroplast retrograde signaling process, the nucleotide phosphatase (SAL1) and 3’-phosphoadenosine-5’-phosphate (PAP) metabolism, evolved in streptophyte algae – the algal ancestors of land plants. We discover an early evolution of SAL1-PAP chloroplast retrograde signaling in stomatal regulation based on conserved gene and protein structure, function and enzyme activity, and transit peptides of SAL1s in species including flowering plants, the fern, Ceratopteris richardii and the moss, Physcomitrella patens. Moreover, we demonstrate that PAP regulates stomatal closure via secondary messengers and ion transport in guard cells of these diverse lineages. The origin of stomata facilitated gas exchange in the earliest land plants. Our findings suggest that the conquest of land by plants was enabled by rapid response to drought stress through the deployment of ancestral SAL1-PAP signaling pathway, intersecting with the core ABA signaling in stomatal guard cells.
代表作:
Wang X*, Chen ZH*, Yang C, Zhang X, Jin G, Chen G, Wang Y, Holford P, Nevo E, Zhang G, Dai F. (2018) Genomic adaptation to drought in wild barley is driven by edaphic natural selection at the Tabigha Evolution Slope. Proceedings of the National Academy of Sciences USA 115, 5223-5228. *Co-first authors
Chen ZH*, Chen G, Dai F, Wang Y, Hills A, Ruan YL, Zhang G, Nevo E, Blatt MR. (2017) Molecular Evolution of Grass Stomata. Trends in Plant Science 22 124-139 *Corresponding author
Cai S, Papanatsiou M, Blatt MR, Chen ZH* (2017) Speedy Grass Stomata: Emerging Molecular and Evolutionary Features. Molecular Plant 10:912–914 *Corresponding author
Cai S, Chen G, Wang Y, Huang Y, Marchant B, Wang Y, Yang Q, Dai F, Hills A, Franks P, Nevo E, Soltis D, Soltis P, Sessa E, Wolf P, Xue D, Zhang G, Pogson BJ, Blatt MR, Chen ZH* (2017) Evolutionary Conservation of ABA Signaling for Stomatal Closure. Plant Physiology 174:732-747 *Corresponding author
Chen ZH*, Wang Y, Wang JW, Babla M, Zhao C, García-Mata C, Sani E, Differ C, Hills A, Amtmann A, Blatt MR. (2016) Nitrate reductase mutation alters potassium nutrition as well as nitric oxide-mediated control of guard cell ion channels in Arabidopsis. New Phytologist 209: 1456–1469 *Corresponding author
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