干旱区生态环境知识资源中心(Arid): Phyllosilicates as protective habitats of filamentous cyanobacteria Leptolyngbya against ultraviolet radiation

Arid

DOI	10.1371/journal.pone.0219616
	Phyllosilicates as protective habitats of filamentous cyanobacteria Leptolyngbya against ultraviolet radiation
	Kugler, Alex 1; Dong, Hailiang 1,2
通讯作者	Dong, Hailiang
来源期刊	PLOS ONE
ISSN	1932-6203
出版年	2019
卷号	14 期号:7
英文摘要	Phototrophic cyanobacteria are limited in growth locations by their need for visible light and must also cope with intermittent ultraviolet radiation (UVR), especially in extreme environments such as deserts and on early Earth. One survival method for cyanobacteria is growing endolithically within minerals such as micas, gypsum, and quartz minerals. However, the capability of different mica minerals to protect cyanobacteria from UVR, while at the same time allowing transmission of photosynthetically active radiation (PAR), has only been minimally examined. In this study, we performed laboratory incubation experiments to demonstrate that a model filamentous cyanobacterium, Leptolyngbya sp., can colonize micas, such as muscovite, phlogopite, and biotite. After inoculation experiments confirmed that these cyanobacteria grew between the sheets of mica, Leptolyngbya sp. colonies were exposed to UVB and UVC for up to 24 hrs, and the level of survival was determined using chlorophyll a and carotenoid assays. Of the three micas investigated, muscovite, being an Fe-poor and Al-rich mica, provided the least attenuation of UVR, however it transmitted the most visible light. Fe-rich biotite provided the best UVR shielding. Phlogopite, apparently because of its intermediate amount of Fe, showed the greatest ability to shield UVR while still transmitting an adequate amount of visible light, making it the ideal habitat for the cyanobacterium. Upon exposure to UVR, significant shifts in several important fatty acids of the cyanobacterium were detected such as linolenic acid and oleic acid, 18:3w3 and 18:1w9c, respectively. These cellular changes are interpreted to be a consequence of UVR and other accessory stress (such as O-3).
类型	Article
语种	英语
国家	USA ; Peoples R China
开放获取类型	Green Published, Green Submitted, gold
收录类别	SCI-E
WOS记录号	WOS:000484951800055
WOS关键词	FATTY-ACIDS ; UV-B ; PHYSIOLOGICAL-RESPONSES ; OXIDATIVE STRESS ; MARS ; DESERT ; LIGHT ; DAMAGE ; GROWTH ; REPAIR
WOS类目	Multidisciplinary Sciences
WOS研究方向	Science & Technology - Other Topics
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/218121
作者单位	1.Miami Univ, Dept Geol & Environm Earth Sci, Oxford, OH 45056 USA; 2.China Univ Geosci, State Key Lab Biogeol & Environm Geol, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Kugler, Alex,Dong, Hailiang. Phyllosilicates as protective habitats of filamentous cyanobacteria Leptolyngbya against ultraviolet radiation[J],2019,14(7).
APA	Kugler, Alex,&Dong, Hailiang.(2019).Phyllosilicates as protective habitats of filamentous cyanobacteria Leptolyngbya against ultraviolet radiation.PLOS ONE,14(7).
MLA	Kugler, Alex,et al."Phyllosilicates as protective habitats of filamentous cyanobacteria Leptolyngbya against ultraviolet radiation".PLOS ONE 14.7(2019).