Different CO2 acclimation strategies in juvenile and mature leaves of Ottelia alismoides

doi:10.1007/s11120-018-0568-y

CORC > 武汉植物园 > 中国科学院武汉植物园

	Different CO2 acclimation strategies in juvenile and mature leaves of Ottelia alismoides
	Huang, Wen Min 1,2; Shao, Hui 1,3; Zhou, Si Ning 4; Zhou, Qin 5; Fu, Wen Long 1; Zhang, Ting 6; Jiang, Hong Sheng 1,2; Li, Wei 1,2; Gontero, Brigitte 3; Maberly, Stephen C.7
刊名	PHOTOSYNTHESIS RESEARCH
	2018-11-01
卷号	138 期号:2 页码:219-232
关键词	Bicarbonate use C4 metabolism Carbon dioxide-concentrating mechanism (CCM) Crassulacean acid metabolism (CAM) Freshwater macrophyte Leaf maturity
ISSN号	0166-8595
DOI	10.1007/s11120-018-0568-y
英文摘要	The freshwater macrophyte, Ottelia alismoides, is a bicarbonate user performing C4 photosynthesis in the light, and crassulacean acid metabolism (CAM) when acclimated to low CO2. The regulation of the three mechanisms by CO2 concentration was studied in juvenile and mature leaves. For mature leaves, the ratios of phosphoenolpyruvate carboxylase (PEPC) to ribulose-bisphosphate carboxylase/oxygenase (Rubisco) are in the range of that of C4 plants regardless of CO2 concentration (1.5-2.5 at low CO2, 1.8-3.4 at high CO2). In contrast, results for juvenile leaves suggest that C4 is facultative and only present under low CO2. pH-drift experiments showed that both juvenile and mature leaves can use bicarbonate irrespective of CO2 concentration, but mature leaves have a significantly greater carbon-extracting ability than juvenile leaves at low CO2. At high CO2, neither juvenile nor mature leaves perform CAM as indicated by lack of diurnal acid fluctuation. However, CAM was present at low CO2, though the fluctuation of titratable acidity in juvenile leaves (15-17 mu equiv g(-1) FW) was slightly but significantly lower than in mature leaves (19-25 mu equivg(-1) FW), implying that the capacity to perform CAM increases as leaves mature. The increased CAM activity is associated with elevated PEPC activity and large diel changes in starch content. These results show that in O. alismoides, carbon-dioxide concentrating mechanismsare more effective in mature compared to juvenile leaves, and C4 is facultative in juvenile leaves but constitutive in mature leaves.
资助项目	Strategic Priority Research Program of the Chinese Academy of Sciences[XDB31000000] ; Chinese Academy of Sciences President's International Fellowship Initiative[2015VBA023] ; Chinese Academy of Sciences President's International Fellowship Initiative[2016VBA006] ; National Key Research and Development Program of China[2016YFA0601000]
WOS研究方向	Plant Sciences
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000448512400008
内容类型	期刊论文
源URL	[http://202.127.146.157/handle/2RYDP1HH/4019]
专题	中国科学院武汉植物园
通讯作者	Gontero, Brigitte; Maberly, Stephen C.
作者单位	1.Chinese Acad Sci, Wuhan Bot Garden, Key Lab Aquat Bot & Watershed Ecol, Wuhan 430074, Hubei, Peoples R China 2.Chinese Acad Sci, Wuhan Bot Garden, Hubei Key Lab Wetland Evolut & Ecol Restorat, Wuhan 430074, Hubei, Peoples R China 3.Aix Marseille Univ, CNRS, UMR 7281, BIP, 31 Chemin Joseph Aiguier,CS70071, F-13402 Marseille 09, France 4.Univ Chinese Acad Sci, Sinodanish Ctr, Beijing 101400, Peoples R China 5.Hubei Univ, Sch Resources & Environm Sci, Wuhan 430074, Hubei, Peoples R China 6.East China Univ Sci & Technol, Sch Resource & Environm Engn, Shanghai 200237, Peoples R China 7.Lancaster Environm Ctr, Ctr Ecol & Hydrol, Lake Ecosyst Grp, Lib Ave, Lancaster LA1 4AP, Bailrigg, England
推荐引用方式 GB/T 7714	Huang, Wen Min,Shao, Hui,Zhou, Si Ning,et al. Different CO2 acclimation strategies in juvenile and mature leaves of Ottelia alismoides[J]. PHOTOSYNTHESIS RESEARCH,2018,138(2):219-232.
APA	Huang, Wen Min.,Shao, Hui.,Zhou, Si Ning.,Zhou, Qin.,Fu, Wen Long.,...&Maberly, Stephen C..(2018).Different CO2 acclimation strategies in juvenile and mature leaves of Ottelia alismoides.PHOTOSYNTHESIS RESEARCH,138(2),219-232.
MLA	Huang, Wen Min,et al."Different CO2 acclimation strategies in juvenile and mature leaves of Ottelia alismoides".PHOTOSYNTHESIS RESEARCH 138.2(2018):219-232.