干旱区生态环境知识资源中心(Arid): Dehydration rates impact physiological, biochemical and molecular responses in desert moss Bryum argenteum

Arid

DOI	10.1016/j.envexpbot.2020.104346
	Dehydration rates impact physiological, biochemical and molecular responses in desert moss Bryum argenteum
	Liang Yuqing; Li Xiaoshuang; Zhang Jing; Zhuo Lu; Liu Xiaojie; Yang Ruirui; Zhang Daoyuan
通讯作者	Li, XS ; Zhang, DY (corresponding author), Chinese Acad Sci, Xinjiang Inst Ecol & Geog, State Key Lab Desert & Oasis Ecol, Urumqi, Peoples R China.
来源期刊	ENVIRONMENTAL AND EXPERIMENTAL BOTANY
ISSN	0098-8472
EISSN	1873-7307
出版年	2021
卷号	183
英文摘要	Dehydration rates significantly impact the amount of damage and rate of recovery of desiccation-tolerant mosses and thus play a role in the ability of these plants to occupy desert ecosystems. The desiccation-tolerant moss Bryum argenteum Hedw. is a component of biological soil crusts in northwestern China and has been extensively studied, but the effects of dehydration rates on its physiological and molecular responses to desiccation and rehydration are still unclear. We evaluated the physiological, biochemical, and molecular responses of B. argenteum during and upon recovery from rapid dehydration, ambient air dehydration, and slow dehydration rates. Our results demonstrated that (1) photosynthesis decreased significantly in response to all dehydration rates and recovered to the control level following rehydration; however, recovery from slow dehydration was more rapid. Ultrastructural investigations revealed that chloroplasts did not degrade and remained intact during desiccation regardless of the dehydration rates. (2) The activities of antioxidant enzymes increased under all drying regimes. Superoxide dismutase (SOD) and catalase (CAT) were the main scavenging enzymes that responded during the dehydration and rehydration processes. The transcripts encoding these enzymes also increased in abundance during desiccation and rehydration. (3) The extent of the increase of the abundance of stress-related transcripts was correlated with the dehydration rates, and all the transcripts displayed decreased abundance throughout rehydration. The majority of the transcripts showed similar accumulation patterns under the rapid and air dehydration treatments; however, slow dehydration resulted in a greater increase in transcript abundance. Our work provides insights into how desiccation and rehydration play roles in the ability of B. argentum to endure harsh environments.
英文关键词	Bryum argenteum Dehydration Chlorophyll fluorescence Reactive oxygen species Stress-related genes
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000608802700012
WOS关键词	VEGETATIVE DESICCATION-TOLERANCE ; CHLOROPHYLL FLUORESCENCE ; TORTULA-RURALIS ; PROTEIN-SYNTHESIS ; PLANT DESICCATION ; TENGGER DESERT ; SOIL CRUSTS ; PHOTOSYNTHESIS ; STRESS ; PHYLOGENY
WOS类目	Plant Sciences ; Environmental Sciences
WOS研究方向	Plant Sciences ; Environmental Sciences & Ecology
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/2XILL650/347844
作者单位	[Liang Yuqing; Li Xiaoshuang; Zhang Jing; Liu Xiaojie; Yang Ruirui; Zhang Daoyuan] Chinese Acad Sci, Xinjiang Inst Ecol & Geog, State Key Lab Desert & Oasis Ecol, Urumqi, Peoples R China; [Liang Yuqing; Liu Xiaojie; Yang Ruirui] Univ Chinese Acad Sci, Beijing, Peoples R China; [Li Xiaoshuang; Zhang Daoyuan] Chinese Acad Sci, Turpan Eremophytes Bot Garden, Beijing, Peoples R China; [Zhuo Lu] Shihezi Univ, Coll Life Sci, Shihezi, Peoples R China
推荐引用方式 GB/T 7714	Liang Yuqing,Li Xiaoshuang,Zhang Jing,et al. Dehydration rates impact physiological, biochemical and molecular responses in desert moss Bryum argenteum[J]. 中国科学院新疆生态与地理研究所,2021,183.
APA	Liang Yuqing.,Li Xiaoshuang.,Zhang Jing.,Zhuo Lu.,Liu Xiaojie.,...&Zhang Daoyuan.(2021).Dehydration rates impact physiological, biochemical and molecular responses in desert moss Bryum argenteum.ENVIRONMENTAL AND EXPERIMENTAL BOTANY,183.
MLA	Liang Yuqing,et al."Dehydration rates impact physiological, biochemical and molecular responses in desert moss Bryum argenteum".ENVIRONMENTAL AND EXPERIMENTAL BOTANY 183(2021).