干旱区生态环境知识资源中心(Arid): Mucilage inhibits germination of desert ephemeral Nepeta micrantha seed under moderate osmotic stress and promotes recovery after release of this stress

Arid

DOI	10.15258/sst.2020.48.1.03
	Mucilage inhibits germination of desert ephemeral Nepeta micrantha seed under moderate osmotic stress and promotes recovery after release of this stress
	Zhao, Chunxiang 1; Jiang, Li 2,3; Shi, Xiang 1; Wang, Lei 2,3
通讯作者	Shi, Xiang ; Wang, Lei
来源期刊	SEED SCIENCE AND TECHNOLOGY
ISSN	0251-0952
EISSN	1819-5717
出版年	2020
卷号	48 期号:1 页码:21-25
英文摘要	Mucilage is considered to play an important role in the survival of seeds in harsh desert environments. Nepeta micrantha is an ephemeral plant of the Gurbantungut Desert, China. The outer surface of N. micrantha nutlets contains a layer of mucilage. We hypothesised that mucilage improves germination during and after osmotic stress. Germination of both intact and demucilaged nutlets under different polyethylene glycol (PEG)-simulated drought stress was tested at the optimal light and temperature conditions. Germination of intact and demucilaged nutlets decreased with an increase in PEG concentration. However, there were no significant differences in germination between intact and demucilaged nutlets at the same PEG concentration, except at 15% PEG. Recovery percentage and final germination of intact nutlets were considerably higher than that of demucilaged nutlets after treatment with 15% PEG. These findings demonstrate that mucilage contributes significantly to drought tolerance of N. micrantha nutlets by decreasing germination under moderate osmotic stress and aiding germination after the release of this stress.
英文关键词	ephemeral plant germination osmotic stress mucilage Nepeta micrantha
类型	Article
语种	英语
国家	Peoples R China
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000524504300003
WOS关键词	TEMPERATURE ; SALINITY ; LIGHT
WOS类目	Agronomy ; Plant Sciences ; Horticulture
WOS研究方向	Agriculture ; Plant Sciences
来源机构	中国科学院新疆生态与地理研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/315564
作者单位	1.Shihezi Univ, Coll Agr, Shihezi 832003, Peoples R China; 2.Chinese Acad Sci, Xinjiang Inst Ecol & Geog, State Key Lab Desert & Oasis Ecol, Urumqi 830011, Peoples R China; 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Zhao, Chunxiang,Jiang, Li,Shi, Xiang,et al. Mucilage inhibits germination of desert ephemeral Nepeta micrantha seed under moderate osmotic stress and promotes recovery after release of this stress[J]. 中国科学院新疆生态与地理研究所,2020,48(1):21-25.
APA	Zhao, Chunxiang,Jiang, Li,Shi, Xiang,&Wang, Lei.(2020).Mucilage inhibits germination of desert ephemeral Nepeta micrantha seed under moderate osmotic stress and promotes recovery after release of this stress.SEED SCIENCE AND TECHNOLOGY,48(1),21-25.
MLA	Zhao, Chunxiang,et al."Mucilage inhibits germination of desert ephemeral Nepeta micrantha seed under moderate osmotic stress and promotes recovery after release of this stress".SEED SCIENCE AND TECHNOLOGY 48.1(2020):21-25.