Picea asperata pioneer and fibrous roots have different physiological mechanisms in response to soil freeze-thaw in spring

doi:10.1007/s10535-017-0728-5

CORC > 成都生物研究所 > 中国科学院成都生物研究所 > 生物多样性与生态系统服务领域 > 中国科学院山地生态恢复与生物资源利用重点实验室

	Picea asperata pioneer and fibrous roots have different physiological mechanisms in response to soil freeze-thaw in spring
	Yin, C.2; Xiao, Q.1,2; Sun, Y.1,2; Liu, Q.2; Pang, X.2
刊名	BIOLOGIA PLANTARUM
	2017-12
卷号	61 期号:4 页码:709-716
关键词	antioxidants nitrogen osmotic adjustment peroxidase proline root vitality saccharides
ISSN号	0006-3134
DOI	10.1007/s10535-017-0728-5
产权排序	1
文献子类	Article
英文摘要	About 70 % of the total land area in the world are affected by soil freeze and thaw (FT) cycles. Root is the first organ of plant to sense soil environment and it is unclear how it copes with the soil FT. Based on the different functions of firstorder pioneer and fibrous roots in woody plants, we hypothesize that pioneer and fibrous roots respond differently. The experiment was conducted in a growth chamber using Picea asperata seedlings. We designed the FT based on field observation data. The physiological responses in fibrous and pioneer roots were examined. Fibrous roots had higher root vitality and N content, whereas pioneer roots exhibited higher total nonstructural saccharide content. The accumulation of O-2(-) under FT treatment was similar in the two types of roots. Pioneer roots showed higher osmolyte (especially proline) content, whereas fibrous roots had higher peroxidase activity. The present study confirmed that fibrous roots have stronger metabolism ability, whereas pioneer roots are the key storage organs. FT in the temperature range from -5 to 5 degrees C are mild and do not cause serious injury to roots. Pioneer roots have higher tolerance to soil FT in spring than fibrous roots. The roots have different strategies to FT: fibrous roots increase the antioxidant system, whereas pioneer roots accumulate more osmolytes. Such knowledge can help us to understand how roots of woody plants cope with soil FT.
学科主题	Plant Sciences
URL标识	查看原文
WOS关键词	ANTIOXIDANT ENZYME-ACTIVITY ; CLIMATE-CHANGE ; FINE ROOTS ; LIPID-PEROXIDATION ; OSMOTIC ADJUSTMENT ; OXIDATIVE STRESS ; TOLERANCE ; CYCLES ; FROST ; TEMPERATURE
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:000413748300013
内容类型	期刊论文
源URL	[http://210.75.237.14/handle/351003/29892]
专题	生物多样性与生态系统服务领域_中国科学院山地生态恢复与生物资源利用重点实验室
作者单位	1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.CAS Key Laboratory of Mountain Ecological Restoration and Bioresource Utilization & Ecological Restoration and Biodiversity Conservation Key Laboratory of Sichuan Province, Chengdu Institute of Biology,Chinese Academy of Sciences, Chengdu 610041, P.R. China;
推荐引用方式 GB/T 7714	Yin, C.,Xiao, Q.,Sun, Y.,et al. Picea asperata pioneer and fibrous roots have different physiological mechanisms in response to soil freeze-thaw in spring[J]. BIOLOGIA PLANTARUM,2017,61(4):709-716.
APA	Yin, C.,Xiao, Q.,Sun, Y.,Liu, Q.,&Pang, X..(2017).Picea asperata pioneer and fibrous roots have different physiological mechanisms in response to soil freeze-thaw in spring.BIOLOGIA PLANTARUM,61(4),709-716.
MLA	Yin, C.,et al."Picea asperata pioneer and fibrous roots have different physiological mechanisms in response to soil freeze-thaw in spring".BIOLOGIA PLANTARUM 61.4(2017):709-716.