干旱区生态环境知识资源中心(Arid): Natural ultraviolet radiation exposure alters photosynthetic biology and improves recovery from desiccation in a desert moss

Arid

DOI	10.1093/jxb/erab051
	Natural ultraviolet radiation exposure alters photosynthetic biology and improves recovery from desiccation in a desert moss
	Ekwealor, Jenna T. B.; Clark, Theresa A.; Dautermann, Oliver; Russell, Alexander; Ebrahimi, Sotodeh; Stark, Lloyd R.; Niyogi, Krishna K.; Mishler, Brent D.
通讯作者	Ekwealor, JTB (corresponding author), Univ Calif Berkeley, Dept Integrat Biol, Berkeley, CA 94720 USA. ; Ekwealor, JTB (corresponding author), Univ Calif Berkeley, Univ & Jepson Herbaria, Berkeley, CA 94720 USA.
来源期刊	JOURNAL OF EXPERIMENTAL BOTANY
ISSN	0022-0957
EISSN	1460-2431
出版年	2021
卷号	72 期号:11 页码:4161-4179
英文摘要	Plants in dryland ecosystems experience extreme daily and seasonal fluctuations in light, temperature, and water availability. We used an in situ field experiment to uncover the effects of natural and reduced levels of ultraviolet radiation (UV) on maximum PSII quantum efficiency (F-v/F-m), relative abundance of photosynthetic pigments and antioxidants, and the transcriptome in the desiccation-tolerant desert moss Syntrichia caninervis. We tested the hypotheses that: (i) S. caninervis plants undergo sustained thermal quenching of light [non-photochemical quenching (NPQ)] while desiccated and after rehydration; (ii) a reduction of UV will result in improved recovery of F-v/F-m; but (iii) 1 year of UV removal will de-harden plants and increase vulnerability to UV damage, indicated by a reduction in F-v/F-m. All field-collected plants had extremely low F-v/F-m after initial rehydration but recovered over 8 d in lab-simulated winter conditions. UV-filtered plants had lower F-v/F-m during recovery, higher concentrations of photoprotective pigments and antioxidants such as zeaxanthin and tocopherols, and lower concentrations of neoxanthin and ChI b than plants exposed to near natural UV levels. Field-grown S. caninervis underwent sustained NPQ that took days to relax and for efficient photosynthesis to resume. Reduction of solar UV radiation adversely affected recovery of F-v/F-m following rehydration.
英文关键词	Biological soil crust desiccation tolerance maximum PSII quantum efficiency (F-v/F-m) Mojave Desert moss non-photochemical quenching (NPQ) photosynthetic efficiency photosynthetic pigments Syntrichia caninervis UV tolerance
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000661531200016
WOS关键词	UV-B RADIATION ; 2 AQUATIC BRYOPHYTES ; SOIL CRUSTS ; CHLOROPHYLL FLUORESCENCE ; PHOTOSYSTEM-II ; ANTARCTIC MOSS ; STRATOSPHERIC OZONE ; VASCULAR PLANTS ; PHYSIOLOGICAL-RESPONSES ; THYLAKOID MEMBRANES
WOS类目	Plant Sciences
WOS研究方向	Plant Sciences
来源机构	University of California, Berkeley
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/350816
作者单位	[Ekwealor, Jenna T. B.; Mishler, Brent D.] Univ Calif Berkeley, Dept Integrat Biol, Berkeley, CA 94720 USA; [Ekwealor, Jenna T. B.; Mishler, Brent D.] Univ Calif Berkeley, Univ & Jepson Herbaria, Berkeley, CA 94720 USA; [Clark, Theresa A.; Russell, Alexander; Ebrahimi, Sotodeh; Stark, Lloyd R.] Univ Nevada, Sch Life Sci, Las Vegas, NV 89154 USA; [Dautermann, Oliver; Niyogi, Krishna K.] Univ Calif Berkeley, Dept Plant & Microbial Biol, Berkeley, CA 94720 USA; [Niyogi, Krishna K.] Univ Calif Berkeley, Howard Hughes Med Inst, Berkeley, CA 94720 USA; [Niyogi, Krishna K.] Lawrence Berkeley Natl Lab, Mol Biophys & Integrated Bioimaging Div, Berkeley, CA USA
推荐引用方式 GB/T 7714	Ekwealor, Jenna T. B.,Clark, Theresa A.,Dautermann, Oliver,et al. Natural ultraviolet radiation exposure alters photosynthetic biology and improves recovery from desiccation in a desert moss[J]. University of California, Berkeley,2021,72(11):4161-4179.
APA	Ekwealor, Jenna T. B..,Clark, Theresa A..,Dautermann, Oliver.,Russell, Alexander.,Ebrahimi, Sotodeh.,...&Mishler, Brent D..(2021).Natural ultraviolet radiation exposure alters photosynthetic biology and improves recovery from desiccation in a desert moss.JOURNAL OF EXPERIMENTAL BOTANY,72(11),4161-4179.
MLA	Ekwealor, Jenna T. B.,et al."Natural ultraviolet radiation exposure alters photosynthetic biology and improves recovery from desiccation in a desert moss".JOURNAL OF EXPERIMENTAL BOTANY 72.11(2021):4161-4179.