Arid
DOI10.2436/20.1501.01.226
Ignimbrite textural properties as determinants of endolithic colonization patterns from hyper-arid Atacama Desert
Camara, Beatriz1; Suzuki, Shino2; Nealson, Kenneth H.2,3; Wierzchos, Jacek1; Ascaso, Carmen1; Artieda, Octavio4; de los Rios, Asuncion1
通讯作者Camara, Beatriz
来源期刊INTERNATIONAL MICROBIOLOGY
ISSN1139-6709
EISSN1618-1905
出版年2014
卷号17期号:4页码:235-247
英文摘要

This study explores the photosynthetic microbial colonization of rhyolitic ignimbrites in Lomas de Tilocalar, a hyper-arid region of the Atacama Desert, Chile. Colonization appeared in the form of a green layer a few millimeters beneath the ignimbrite surface. Some ignimbrite rocks revealed two distinct micromorphological areas of identical mineralogical and chemical composition but different textural properties. According to texture, colonization patterns varied in terms of the extension and depth of colonization. The diversity of photosynthetic microorganisms was assessed by denaturing gradient gel electrophoresis (DGGE) of the 23S rRNA gene and by generating clone libraries of the 16S rRNA gene. We observed a low diversity of photosynthetic microorganisms colonizing the ignimbrite microhabitat. Most rRNA gene sequences recovered greatly resembled those of Chroococcidiopsis hypolith clones from arid deserts. These results point to highly restrictive conditions of the hyper-arid Atacama Desert conditioning the diversity of cyanobacteria, and suggest that microbial colonization and composition patterns might be determined by the microscale physico-chemical properties of the ignimbrite rocks.


英文关键词Chroococcidiopsis sp. endoliths ignimbrite rock porosity volcanic rock Atacama Desert
类型Article
语种英语
国家Spain ; USA
收录类别SCI-E
WOS记录号WOS:000361304500006
WOS关键词BACTERIAL DIVERSITY ; MOLECULAR CHARACTERIZATION ; MICROBIAL COMMUNITIES ; BIORECEPTIVITY ; CYANOBACTERIA ; BIODETERIORATION ; PHYLOGENIES ; SEARCH ; ALGAE ; ROCKS
WOS类目Biotechnology & Applied Microbiology ; Microbiology
WOS研究方向Biotechnology & Applied Microbiology ; Microbiology
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/182792
作者单位1.CSIC, Natl Museum Nat Sci, E-28006 Madrid, Spain;
2.J Craig Venter Inst, La Jolla, CA USA;
3.Univ So Calif, Los Angeles, CA USA;
4.Univ Extremadura, Dept Plant Biol Ecol & Earth Sci, Plasencia, Spain
推荐引用方式
GB/T 7714
Camara, Beatriz,Suzuki, Shino,Nealson, Kenneth H.,et al. Ignimbrite textural properties as determinants of endolithic colonization patterns from hyper-arid Atacama Desert[J],2014,17(4):235-247.
APA Camara, Beatriz.,Suzuki, Shino.,Nealson, Kenneth H..,Wierzchos, Jacek.,Ascaso, Carmen.,...&de los Rios, Asuncion.(2014).Ignimbrite textural properties as determinants of endolithic colonization patterns from hyper-arid Atacama Desert.INTERNATIONAL MICROBIOLOGY,17(4),235-247.
MLA Camara, Beatriz,et al."Ignimbrite textural properties as determinants of endolithic colonization patterns from hyper-arid Atacama Desert".INTERNATIONAL MICROBIOLOGY 17.4(2014):235-247.
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