干旱区生态环境知识资源中心(Arid): The environmental adaptation strategy of seed germination, and roles of the seed pappus on dispersal and hypocotyl hairs on seedling anchorage in Tamarix ramosissima

Arid

DOI	10.1093/aobpla/plab065
	The environmental adaptation strategy of seed germination, and roles of the seed pappus on dispersal and hypocotyl hairs on seedling anchorage in Tamarix ramosissima
	Li, Caixia; Wei, Xiaowei; Lan, Haiyan
通讯作者	Lan, HY (corresponding author), Xinjiang Univ, Coll Life Sci & Technol, Xinjiang Key Lab Biol Resources & Genet Engn, Urumqi, Peoples R China.
来源期刊	AOB PLANTS
ISSN	2041-2851
出版年	2021
卷号	13 期号:6
英文摘要	Seed dispersal, germination and seedling establishment are affected by various ecological factors in desert plant species. Tamarix ramosissima has evolved multiple strategies to facilitate its survival in harsh environments during the early stages of development. In this study, we investigated the effects of different ecological factors on seed germination and seedling growth, the function of the seed pappus in seed dispersal, as well as the function of the hypocotyl hairs in seedling establishment. We found that the seed germination of T. ramosissima was rapid and could occur under a wide range of temperatures (5-30 degrees C), after long periods of storage (at least 12 months on dispersal), under high concentrations of salts (700-900 mmol.L-1) and polyethylene glycol (PEG) 6000 (500 g.L-1) and under medium concentrations of alkalis (300-500 mmol.L-1). Lower concentrations of salts and PEG promoted seedling growth. The seed pappus had no effect on seed germination, but it might function as an accessory structure that provides a buoyancy force and promotes long-distance seed dispersal. The hypocotyl hairs located on the edge of the hypocotyl end might aid the upright positioning of the seedlings during early development, especially when seed germination occurs under floating or flooding conditions. In conclusion, the germination of T. ramosissima seeds and seedling development can occur under diverse types of abiotic stress, and the seed pappus and hypocotyl hairs played an important role in seed dispersal and seedling establishment.
英文关键词	Hypocotyl hairs seed dispersal seed germination seed pappus Tamarix ramosissima
类型	Article
语种	英语
开放获取类型	Green Published, gold
收录类别	SCI-E
WOS记录号	WOS:000727805100001
WOS关键词	COLD STRATIFICATION ; SALINITY ; GROWTH ; TEMPERATURE ; LIGHT ; SALT ; STRESS ; MORPHOLOGY ; CHINENSIS ; ESTABLISHMENT
WOS类目	Plant Sciences ; Ecology
WOS研究方向	Plant Sciences ; Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/373666
作者单位	[Li, Caixia; Wei, Xiaowei; Lan, Haiyan] Xinjiang Univ, Coll Life Sci & Technol, Xinjiang Key Lab Biol Resources & Genet Engn, Urumqi, Peoples R China
推荐引用方式 GB/T 7714	Li, Caixia,Wei, Xiaowei,Lan, Haiyan. The environmental adaptation strategy of seed germination, and roles of the seed pappus on dispersal and hypocotyl hairs on seedling anchorage in Tamarix ramosissima[J],2021,13(6).
APA	Li, Caixia,Wei, Xiaowei,&Lan, Haiyan.(2021).The environmental adaptation strategy of seed germination, and roles of the seed pappus on dispersal and hypocotyl hairs on seedling anchorage in Tamarix ramosissima.AOB PLANTS,13(6).
MLA	Li, Caixia,et al."The environmental adaptation strategy of seed germination, and roles of the seed pappus on dispersal and hypocotyl hairs on seedling anchorage in Tamarix ramosissima".AOB PLANTS 13.6(2021).