Dorsoventral variation in photosynthesis during leaf senescence probed by chlorophyll a fluorescence induction kinetics in cucumber and maize plants

doi:10.32615/ps.2020.005

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	Dorsoventral variation in photosynthesis during leaf senescence probed by chlorophyll a fluorescence induction kinetics in cucumber and maize plants
	Wu, H. Y.; Dong, F. Q.; Liu, A.; Shi, L.; Zhang, W. F.; Jiang, C. D.
刊名	PHOTOSYNTHETICA
	2020
卷号	58 期号:2 页码:479-487
关键词	dorsiventral leaf isobilateral leaf light gradient microstructure photosystem II
ISSN号	0300-3604
DOI	10.32615/ps.2020.005
文献子类	Article
英文摘要	Although photosynthesis has been intensively studied during leaf senescence, it is unclear whether the changes of photosynthetic function in various mesophyll tissues can be detected using chlorophyll a fluorescence induction kinetics (CFI) in vivo. To clarify this question, leaf structure and CFI were carefully examined in senescent leaves. The results showed declines in chlorophyll content and photosynthetic rate in both cucumber and maize plants as leaves aged. In cucumber leaves, the number of chloroplasts decreased more rapidly in the palisade tissue compared to the sponge tissue as senescence progressed. Under various pulse light intensities, the enhancement of the relative variable fluorescence in the CFI curves measured on the adaxial side was larger than that on the abaxial side of senescent cucumber leaves, indicating senescence in the palisade tissue progressed more quickly than that in the sponge tissue. JIP-test parameters further showed that the loss of photosynthetic electron transport activity in palisade tissue was faster than that in sponge tissue. However, during leaf senescence in maize, there were no such dorsoventral differences. We therefore propose that the decline of photosynthesis in cucumber leaves is largely determined by the senescence of palisade tissue. The changes in photosynthesis in palisade and sponge tissues with leaf aging can be probed effectively by CFI measured on both sides of cucumber leaves in vivo.
学科主题	Plant Sciences
电子版国际标准刊号	1573-9058
出版地	6 PRAGUE
WOS关键词	ELECTRON-TRANSPORT ; CO2 ENRICHMENT ; LIGHT ; RUBISCO ; SPECIFICATION ; CHLOROPLASTS ; SPINACH ; GROWTH ; LEAVES ; STEPS
WOS研究方向	Plant Sciences
语种	英语
出版者	ACAD SCIENCES CZECH REPUBLIC, INST EXPERIMENTAL BOTANY
WOS记录号	WOS:000524480200030
资助机构	National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [31571576, 31970350]
内容类型	期刊论文
源URL	[http://ir.ibcas.ac.cn/handle/2S10CLM1/21825]
专题	中科院北方资源植物重点实验室
作者单位	1.Dong, F. Q. 2.[Wu, H. Y. 3.Shi, L. 4.Liu, A. 5.Jiang, C. D.] Chinese Acad Sci, Inst Bot, Key Lab Plant Resources, Key Lab Plant Mol Physiol, Beijing 100093, Peoples R China 6.Zhang, W. F.] Shihezi Univ, Coll Agr, Key Lab Oasis Ecol Agr Xinjiang Prod & Construct, Shihezi 832003, Xinjiang, Peoples R China
推荐引用方式 GB/T 7714	Wu, H. Y.,Dong, F. Q.,Liu, A.,et al. Dorsoventral variation in photosynthesis during leaf senescence probed by chlorophyll a fluorescence induction kinetics in cucumber and maize plants[J]. PHOTOSYNTHETICA,2020,58(2):479-487.
APA	Wu, H. Y.,Dong, F. Q.,Liu, A.,Shi, L.,Zhang, W. F.,&Jiang, C. D..(2020).Dorsoventral variation in photosynthesis during leaf senescence probed by chlorophyll a fluorescence induction kinetics in cucumber and maize plants.PHOTOSYNTHETICA,58(2),479-487.
MLA	Wu, H. Y.,et al."Dorsoventral variation in photosynthesis during leaf senescence probed by chlorophyll a fluorescence induction kinetics in cucumber and maize plants".PHOTOSYNTHETICA 58.2(2020):479-487.