Photosynthetic carbon and nitrogen metabolism and the relationship between their metabolites and lipid peroxidation in dwarf bamboo (Fargesia rufa Yi) during drought and subsequent recovery

	Photosynthetic carbon and nitrogen metabolism and the relationship between their metabolites and lipid peroxidation in dwarf bamboo (Fargesia rufa Yi) during drought and subsequent recovery
	Liu, Chenggang; Wang, Yanjie; Pan, Kaiwen; Jin, Yanqiang; Liang, Jin; Li, Wei; Zhang, Lin
刊名	TREES-STRUCTURE AND FUNCTION
	2015
卷号	29 期号:6 页码:1633-1647
关键词	TERM SOIL DROUGHT GLUTAMINE-SYNTHETASE OSMOTIC ADJUSTMENT ENZYME-ACTIVITIES LEYMUS-CHINENSIS OXIDATIVE STRESS FIELD CONDITIONS WATER DEFICITS HIGHER-PLANTS ELEVATED CO2
通讯作者	Wang, YJ (reprint author), Chinese Acad Sci, Chengdu Inst Biol, Key Lab Mt Ecol Restorat & Bioresource Utilizat, 9 Sect 4, Chengdu 610041, Sichuan, Peoples R China.
产权排序	1
合作状况	国内
英文摘要	Differential regulations of C and N metabolism in dwarf bamboo improve the capacity of osmotic adjustment, and also their metabolites may play an important role for protection against membrane lipid peroxidation under drought, thus accelerating recovery after rewatering. Dwarf bamboo (Fargesia rufa Yi), is a staple food for the endangered giant panda, but little is known about the impact of drought on bamboo species and its recovery mechanism. This study investigated the response of carbon (C) and nitrogen (N) metabolism to drought and subsequent recovery, and the relationship of their metabolites with lipid peroxidation. Photochemistry was reversibly down-regulated after drought, but a longer recovery time is needed. The accelerated degradation of starch due to a rapid increase in amylase activity resulted in higher soluble sugar only in severe drought-stressed plants after 30 days of drought. Sucrose content was not affected by drought because of the relative increases in activities of invertase, sucrose synthase, and sucrose phosphate synthase. As nitrate concentration increased in parallel with nitrate reductase activity, ammonium (NH4 (+)) production was enhanced by drought. Also, activated glutamine synthetase/glutamate synthase cycle stimulated NH4 (+) assimilation, while hydrolysis of soluble proteins was accelerated, resulting in accumulation of amino acids. After rewatering, re-balancing of C metabolism has gradually begun, but a stronger N metabolism was still observed. The notable positive correlations between MDA and the contents of starch and proline after 15 days of drought as well as between MDA and the contents of soluble sugar, NSC and proline after 30 days of drought were displayed. We conclude that dwarf bamboo may not only differently regulate its C and N metabolism to improve the capacity of osmotic adjustment but also employ its different metabolites protect against membrane lipid peroxidation under different intensities and duration of drought, thus accelerating its recovery after rewatering.
学科主题	Forestry
类目[WOS]	Forestry
语种	英语
内容类型	期刊论文
源URL	[http://210.75.237.14/handle/351003/27481]
专题	成都生物研究所_生态研究
推荐引用方式 GB/T 7714	Liu, Chenggang,Wang, Yanjie,Pan, Kaiwen,et al. Photosynthetic carbon and nitrogen metabolism and the relationship between their metabolites and lipid peroxidation in dwarf bamboo (Fargesia rufa Yi) during drought and subsequent recovery[J]. TREES-STRUCTURE AND FUNCTION,2015,29(6):1633-1647.
APA	Liu, Chenggang.,Wang, Yanjie.,Pan, Kaiwen.,Jin, Yanqiang.,Liang, Jin.,...&Zhang, Lin.(2015).Photosynthetic carbon and nitrogen metabolism and the relationship between their metabolites and lipid peroxidation in dwarf bamboo (Fargesia rufa Yi) during drought and subsequent recovery.TREES-STRUCTURE AND FUNCTION,29(6),1633-1647.
MLA	Liu, Chenggang,et al."Photosynthetic carbon and nitrogen metabolism and the relationship between their metabolites and lipid peroxidation in dwarf bamboo (Fargesia rufa Yi) during drought and subsequent recovery".TREES-STRUCTURE AND FUNCTION 29.6(2015):1633-1647.