干旱区生态环境知识资源中心(Arid): Response of Endolithic Chroococcidiopsis Strains From the Polyextreme Atacama Desert to Light Radiation

Arid

DOI	10.3389/fmicb.2020.614875
	Response of Endolithic Chroococcidiopsis Strains From the Polyextreme Atacama Desert to Light Radiation
	Casero, Maria Cristina; Ascaso, Carmen; Quesada, Antonio; Mazur-Marzec, Hanna; Wierzchos, Jacek
通讯作者	Casero, MC ; Wierzchos, J (corresponding author), CSIC, Museo Nacl Ciencias Nat, Dept Biogeoquim & Ecol Microbiana, Grp Ecol & Geomicrobiol Sustrato Litico, Madrid, Spain.
来源期刊	FRONTIERS IN MICROBIOLOGY
EISSN	1664-302X
出版年	2021
卷号	11
英文摘要	Cyanobacteria exposed to high solar radiation make use of a series of defense mechanisms, including avoidance, antioxidant systems, and the production of photoprotective compounds such as scytonemin. Two cyanobacterial strains of the genus Chroococcidiopsis from the Atacama Desert - which has one of the highest solar radiation levels on Earth- were examined to determine their capacity to protect themselves from direct photosynthetically active (PAR) and ultraviolet radiation (UVR): the UAM813 strain, originally isolated from a cryptoendolithic microhabitat within halite (NaCl), and UAM816 strain originally isolated from a chasmoendolithic microhabitat within calcite (CaCO3). The oxidative stress induced by exposure to PAR or UVR + PAR was determined to observe their short-term response, as were the long-term scytonemin production, changes in metabolic activity and ultrastructural damage induced. Both strains showed oxidative stress to both types of light radiation. The UAM813 strain showed a lower acclimation capacity than the UAM816 strain, showing an ever-increasing accumulation of reactive oxygen species (ROS) and a smaller accumulation of scytonemin. This would appear to reflect differences in the adaptation strategies followed to meet the demands of their different microhabitats.
英文关键词	Chroococcidiopsis endolithic Atacama light scytonemin
类型	Article
语种	英语
开放获取类型	Green Published, Green Submitted, gold
收录类别	SCI-E
WOS记录号	WOS:000613306400001
WOS关键词	HYPER-ARID ZONE ; ULTRAVIOLET-RADIATION ; AMINO-ACIDS ; MICROBIAL COMMUNITIES ; SUNSCREEN PIGMENT ; HALITE ROCKS ; UV-B ; SCYTONEMIN ; CYANOBACTERIA ; CORE
WOS类目	Microbiology
WOS研究方向	Microbiology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/347908
作者单位	[Casero, Maria Cristina; Ascaso, Carmen; Wierzchos, Jacek] CSIC, Museo Nacl Ciencias Nat, Dept Biogeoquim & Ecol Microbiana, Grp Ecol & Geomicrobiol Sustrato Litico, Madrid, Spain; [Quesada, Antonio] Univ Autonoma Madrid, Dept Biol, Madrid, Spain; [Mazur-Marzec, Hanna] Univ Gdansk, Div Marine Biotechnol, Gdynia, Poland
推荐引用方式 GB/T 7714	Casero, Maria Cristina,Ascaso, Carmen,Quesada, Antonio,et al. Response of Endolithic Chroococcidiopsis Strains From the Polyextreme Atacama Desert to Light Radiation[J],2021,11.
APA	Casero, Maria Cristina,Ascaso, Carmen,Quesada, Antonio,Mazur-Marzec, Hanna,&Wierzchos, Jacek.(2021).Response of Endolithic Chroococcidiopsis Strains From the Polyextreme Atacama Desert to Light Radiation.FRONTIERS IN MICROBIOLOGY,11.
MLA	Casero, Maria Cristina,et al."Response of Endolithic Chroococcidiopsis Strains From the Polyextreme Atacama Desert to Light Radiation".FRONTIERS IN MICROBIOLOGY 11(2021).