Nitrogen Addition Exacerbates the Negative Effects of Low Temperature Stress on Carbon and Nitrogen Metabolism in Moss

doi:10.1071/RJ16018

	Nitrogen Addition Exacerbates the Negative Effects of Low Temperature Stress on Carbon and Nitrogen Metabolism in Moss
	Liu, Bin-Yang ; Lei, Chun-Yi ; Liu, Wei-Qiu
	2017
发表期刊	FRONTIERS IN PLANT SCIENCE
ISSN	1664-462X
卷号	8
摘要	Global environmental changes are leading to an increase in localized abnormally low temperatures and increasing nitrogen (N) deposition is a phenomenon recognized worldwide. Both low temperature stress (LTS) and excess N induce oxidative stress in plants, and excess N also reduces their resistance to LTS. Mosses are primitive plants that are generally more sensitive to alterations in environmental factors than vascular species. To study the combined effects of N deposition and LTS on carbon (C) and N metabolism in moss, two moss species, Pogonatum cirratum subsp. fuscatum, and Hypnum plumaeforme, exposed to various concentrations of nitrate (KNO3) or ammonium (NH4Cl), were treated with or without LTS. C/N metabolism indices were then monitored, both immediately after the stress and after a short recovery period (10 days). LTS decreased the photosystem II (PSII) performance index and inhibited non-cyclic photophosphorylation, ribulose-1,5-bisphosphate carboxylase, and glutamine synthetase activities, indicating damage to PSII and reductions in C/N assimilation in these mosses. LTS did not affect cyclic photophosphorylation, sucrose synthase, sucrose-phosphate synthase, and NADP-isocitrate dehydrogenase activities, suggesting a certain level of energy and C skeleton generation were maintained in the mosses to combat LTS; however, LTS inhibited the activity of glycolate oxidase. As predicted, N supply increased the sensitivity of the mosses to LTS, resulting in greater damage to PSII and a sharper decrease in C/N assimilation. After the recovery period, the performance of PSII and C/N metabolism, which were inhibited by LTS increased significantly, and were generally higher than those of control samples not exposed to LTS, suggesting overcompensation effects; however, N application reduced the extent of compensation effects. Both C and N metabolism exhibited stronger compensation effects in H. plumaeforme than in P. cirratum subsp. fuscatum. The difference was especially pronounced after addition of N, indicating that H. plumaeforme may be more resilient to temperature and N variation, which could explain its wider distribution in the natural environment.
关键词	abiotic stress compensation effect low temperature nitrogen deposition carbon metabolism nitrogen metabolism moss
学科领域	Environmental Sciences & Ecology
DOI	10.1071/RJ16018
收录类别	SCI
语种	英语
WOS关键词	COLD-ACCLIMATION ; CHLAMYDOMONAS-REINHARDTII ; RACOMITRIUM-LANUGINOSUM ; PHYSIOLOGICAL-RESPONSES ; PHYSCOMITRELLA-PATENS ; OXIDATIVE STRESS ; REDOX REGULATION ; CHILLING STRESS ; DROUGHT STRESS ; DEPOSITION
WOS记录号	WOS:000404256900006
出版者	FRONTIERS MEDIA SA
文献子类	Article
出版地	LAUSANNE
资助机构	National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [31070470, 31370490] ; Basic Work Special Project of the National Ministry of Science and Technology of China [2013FY111500]
作者邮箱	lsslwq@mail.sysu.edu.cn
引用统计	被引频次：5[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ibcas.ac.cn/handle/2S10CLM1/22320
专题	植被与环境变化国家重点实验室
作者单位	1.[Liu, Bin-Yang 2.Sun Yat Sen Univ, Sch Life Sci, Guangdong Key Lab Plant Resources, Guangzhou, Guangdong, Peoples R China 3.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing, Peoples R China 4.Heishiding Nat Reserve, Dept Sci Res & Educ, Zaoqing, Peoples R China
推荐引用方式 GB/T 7714	Liu, Bin-Yang,Lei, Chun-Yi,Liu, Wei-Qiu. Nitrogen Addition Exacerbates the Negative Effects of Low Temperature Stress on Carbon and Nitrogen Metabolism in Moss[J]. FRONTIERS IN PLANT SCIENCE,2017,8.
APA	Liu, Bin-Yang,Lei, Chun-Yi,&Liu, Wei-Qiu.(2017).Nitrogen Addition Exacerbates the Negative Effects of Low Temperature Stress on Carbon and Nitrogen Metabolism in Moss.FRONTIERS IN PLANT SCIENCE,8.
MLA	Liu, Bin-Yang,et al."Nitrogen Addition Exacerbates the Negative Effects of Low Temperature Stress on Carbon and Nitrogen Metabolism in Moss".FRONTIERS IN PLANT SCIENCE 8(2017).

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