Oxidative metabolism-related changes during germination of mono maple (Acer mono Maxim.) seeds under seasonal frozen soil

doi:10.1007/s11284-009-0660-z

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	Oxidative metabolism-related changes during germination of mono maple (Acer mono Maxim.) seeds under seasonal frozen soil
	Qin, Jihong 1,2; Liu, Qing 2
刊名	ECOLOGICAL RESEARCH
	2010-03
卷号	25 期号:2 页码:337-345
关键词	Seed Dormancy Germination Reactive oxygen species Seasonal frozen soil Subalpine mountains
ISSN号	0912-3814
DOI	10.1007/s11284-009-0660-z
产权排序	2
文献子类	Article
英文摘要	The influence of seasonal frozen soil and buried depth on germination of mono maple (Acer mono Maxim.) seeds was studied in field conditions in winter in a sub-alpine region. Mono maple seeds almost lost their ability to germinate in non-freezing soil, while seasonal frozen soil treatments facilitated the germination accompanied with a progressive accumulation of reactive oxygen species (ROS). The result indicates that ROS may act as a positive signal for seed dormancy. However, exceeding accumulation of ROS led to decrease in germination rate. We suggest that the shift from a signaling to a deleterious role may be related to the accumulation of these ROS above a threshold level that leads to various cellular alterations and damage. The enhanced activities of antioxidant enzymes appear to be more closely related to freezing tolerance, because of their ability to scavenge ROS to avoid deleterious events. Seasonal frozen soil was beneficial in accelerating the germination of mono maple seeds. However, a slight increase of freezing temperature may have also facilitated the germination of mono maple seeds by enhanced activities of antioxidant enzymes. Hence, moderate winter warming may be beneficial to mono maple regeneration due to the improvement of seed germination, but the disappearance of seasonal frozen soil may lead to germination failure of the mono maple seeds.
学科主题	Environment/ecology
URL标识	查看原文
WOS关键词	SUPEROXIDE-DISMUTASE ; HYDROGEN-PEROXIDE ; ANTIOXIDANT SYSTEM ; MAIZE SEEDLINGS ; FREEZING STRESS ; MEDICAGO-SATIVA ; ACTIVE OXYGEN ; TOLERANCE ; PLANTS ; LEAVES
WOS研究方向	Environmental Sciences & Ecology
语种	英语
出版者	SPRINGER JAPAN KK
WOS记录号	WOS:000275705600010
内容类型	期刊论文
源URL	[http://210.75.237.14/handle/351003/29931]
专题	生物多样性与生态系统服务领域_生态研究
通讯作者	Liu, Qing
作者单位	1.Chengdu Univ, Coll Rural & Urban Construct, Chengdu 610106, Peoples R China; 2.Chinese Acad Sci, Chengdu Inst Biol, Chengdu 610041, Peoples R China
推荐引用方式 GB/T 7714	Qin, Jihong,Liu, Qing. Oxidative metabolism-related changes during germination of mono maple (Acer mono Maxim.) seeds under seasonal frozen soil[J]. ECOLOGICAL RESEARCH,2010,25(2):337-345.
APA	Qin, Jihong,&Liu, Qing.(2010).Oxidative metabolism-related changes during germination of mono maple (Acer mono Maxim.) seeds under seasonal frozen soil.ECOLOGICAL RESEARCH,25(2),337-345.
MLA	Qin, Jihong,et al."Oxidative metabolism-related changes during germination of mono maple (Acer mono Maxim.) seeds under seasonal frozen soil".ECOLOGICAL RESEARCH 25.2(2010):337-345.