Differences in the stimulation of cyclic electron flow in two tropical ferns under water stress are related to leaf anatomy

CORC > 西双版纳热带植物园 > 中国科学院西双版纳热带植物园 > 植物生理生态研究组

	Differences in the stimulation of cyclic electron flow in two tropical ferns under water stress are related to leaf anatomy
	Wang, JH ; Li, SC ; Sun, M ; Huang, W ; Cao, H ; Xu, F ; Zhou, NN ; Zhang, SB*
刊名	PHYSIOLOGIA PLANTARUM
	2013
卷号	147 期号:3 页码:283-295
中文摘要	Cyclic electron flow (CEF) plays an important role in photoprotection for angiosperms under environmental stresses. However, ferns are more sensitive to drought and their water transport systems are not as efficient as those of angiosperms, it is unclear whether CEF also contributes to photoprotection in these plants. Using Microsorum punctatum and Paraleptochillus decurrens, we studied the electron fluxes through both photosystem I (PSI) and photosystem II (PSII) under water stress and their leaf anatomies. Our goal was to determine if CEF functions in the photoprotection of these ferns and, if so, whether CEF stimulation is related to leaf anatomy. Compared with P. decurrens, M. punctatum had thicker leaves and cuticles and higher water storage capacity, but lower stomatal density and slower rate of water loss. During induced drought, the decrease in leaf water potential (leaf) was more pronounced in P. decurrens than in M. punctatum. For both species, the decline in leaf was associated with a lower effective PSII quantum yield, photochemical quantum yield of PSI and electron transport rate (ETR), whereas increases were found in the quantum yield of regulated energy dissipation, CEF and CEF/ETR(II) ratio. Values for CEF and the CEF/ETR(II) ratio peaked in M. punctatum at a light intensity of 500600 mu mol m2 s1 vs only 150200 mu mol m2 s1 in P. decurrens. Therefore, our results indicate that the stimulation of CEF in tropical ferns contributes to their photoprotection under water stress, and is related to their respective drought tolerance and leaf anatomy.
公开日期	2013-03-14
内容类型	期刊论文
源URL	[http://ir.xtbg.org.cn/handle/353005/3950]
专题	西双版纳热带植物园_植物生理生态研究组
推荐引用方式 GB/T 7714	Wang, JH,Li, SC,Sun, M,et al. Differences in the stimulation of cyclic electron flow in two tropical ferns under water stress are related to leaf anatomy[J]. PHYSIOLOGIA PLANTARUM,2013,147(3):283-295.
APA	Wang, JH.,Li, SC.,Sun, M.,Huang, W.,Cao, H.,...&Zhang, SB*.(2013).Differences in the stimulation of cyclic electron flow in two tropical ferns under water stress are related to leaf anatomy.PHYSIOLOGIA PLANTARUM,147(3),283-295.
MLA	Wang, JH,et al."Differences in the stimulation of cyclic electron flow in two tropical ferns under water stress are related to leaf anatomy".PHYSIOLOGIA PLANTARUM 147.3(2013):283-295.