Activities of principal photosynthetic enzymes in green macroalga Ulva linza: functional implication of C-4 pathway in CO2 assimilation

doi:10.1007/s11427-013-4489-x

	Activities of principal photosynthetic enzymes in green macroalga Ulva linza: functional implication of C-4 pathway in CO2 assimilation
	Xu JianFang 1; Zhang XiaoWen 2; Ye NaiHao 2; Zheng Zhou 1; Mou ShanLi 2; Dong MeiTao 3; Xu Dong 2; Miao JinLai 1
刊名	SCIENCE CHINA-LIFE SCIENCES
	2013-06
卷号	56 期号:6 页码:571-580
关键词	C-4 pathway PPDK RuBPCase Ulva linza
ISSN号	1674-7305
DOI	10.1007/s11427-013-4489-x
英文摘要	The green-tide-forming macroalga Ulva linza was profiled by transcriptome sequencing to ascertain whether the alga carries both C-3 and C-4 photosynthesis genes. The key enzymes involved in C-4 metabolism including pyruvate orthophosphate dikinase (PPDK), phosphoenolpyruvate carboxylase (PEPC), and phosphoenolpyruvate carboxykinase (PCK) were found. When measured under normal and different stress conditions, expression of rbcL was higher under normal conditions and lower under the adverse conditions, whereas that of PPDK was higher under some adverse conditions, namely desiccation, high salinity, and low salinity. Both ribulose-1, 5-biphosphate carboxylase (RuBPCase) and PPDK were found to play a role in carbon fixation, with significantly higher PPDK activity across the stress conditions. These results suggest that elevated PPDK activity alters carbon metabolism in U. linza leading to partial operation of the C-4 carbon metabolism, a pathway that, under stress conditions, probably contributes to the hardy character of U. linza and thus to its wide distribution.
资助项目	National Marine Public Welfare Research Project[200805069]
WOS关键词	RIBULOSE-1,5-BISPHOSPHATE CARBOXYLASE OXYGENASE ; C-3-C-4 INTERMEDIATE ; CONCENTRATING MECHANISMS ; EVOLUTION ; LOCALIZATION ; SPECIFICITY ; FLAVERIA ; NITROGEN ; GENES
WOS研究方向	Life Sciences & Biomedicine - Other Topics
语种	英语
出版者	SCIENCE PRESS
WOS记录号	WOS:000320035300011
内容类型	期刊论文
源URL	[http://ir.fio.com.cn:8080/handle/2SI8HI0U/25901]
专题	自然资源部第一海洋研究所
通讯作者	Ye NaiHao
作者单位	1.State Ocean Adm, Key Lab Marine Bioact Subst, Inst Oceanog 1, Qingdao 266061, Peoples R China 2.Chinese Acad Fishery Sci, Yellow Sea Fisheries Res Inst, Qingdao 266071, Peoples R China 3.Qingdao Agr Univ, Qingdao 266109, Peoples R China
推荐引用方式 GB/T 7714	Xu JianFang,Zhang XiaoWen,Ye NaiHao,et al. Activities of principal photosynthetic enzymes in green macroalga Ulva linza: functional implication of C-4 pathway in CO2 assimilation[J]. SCIENCE CHINA-LIFE SCIENCES,2013,56(6):571-580.
APA	Xu JianFang.,Zhang XiaoWen.,Ye NaiHao.,Zheng Zhou.,Mou ShanLi.,...&Miao JinLai.(2013).Activities of principal photosynthetic enzymes in green macroalga Ulva linza: functional implication of C-4 pathway in CO2 assimilation.SCIENCE CHINA-LIFE SCIENCES,56(6),571-580.
MLA	Xu JianFang,et al."Activities of principal photosynthetic enzymes in green macroalga Ulva linza: functional implication of C-4 pathway in CO2 assimilation".SCIENCE CHINA-LIFE SCIENCES 56.6(2013):571-580.