Core bacterial community composition of a cryptoendolithic ecosystem in the Grand Staircase-Escalante National Monument, Utah.
Core bacterial community composition of a cryptoendolithic ecosystem in the Grand Staircase-Escalante National Monument, Utah.
复制标题
DOI：
10.1002/mbo3.707
复制
发表时间：
2019-05
期刊：
影响因子：
3.4
通讯作者：
Kurtz HD Jr
中科院分区：
文献类型：
--
作者：
Kaur S;Kurtz HD Jr
侏罗纪纳瓦霍砂岩中的隐石细菌群落在该生态系统中起着重要的生态作用。为了更好地了解这些隐石群落的作用，需要对微生物多样性有更深入的了解。我们分析了8个砂岩样品中的细菌多样性，从几个微地质特征与一个大的砂岩圆顶。隐石内细菌多样性分为三个不同的群体，与地形相关，这表明保水的持续时间可能是一个因素。每个集群之间的多样性比较表明，在这个栖息地中存在一个核心的细菌群落。总体细菌群落结构以蓝藻、变形菌、拟杆菌和放线菌为主。蓝细菌中最常见的属是Leptolyngbya，Chroococcidiopsis和未分类的蓝细菌，占蓝细菌序列的大部分。在变形菌门中，α变形菌门是检测到的最大的一类，醋杆菌科的成员，特别是嗜酸菌属，是最丰富的。嗜酸菌能够在中等酸性条件下进行有氧三价铁还原，解释了该系统中高水平的铁（II）。这项研究突出了未开发的细菌多样性在这个栖息地系统的程度，并设置了前提，详细说明隐石群落的生态功能。
Cryptoendolithic bacterial communities in the Jurassic Navajo Sandstones play an important ecological role in this ecosystem. Developing a better understanding of the role of these cryptoendolithic communities required a deeper knowledge of the microbial diversity present. We analyzed the bacterial diversity in eight sandstones samples from several microgeological features associated with a large sandstone dome. Cryptoendolithic bacterial diversity is clustered into three distinct groups which correlated with topography, suggesting the duration of water retention might be a factor. Comparisons of diversity between each cluster showed that a core bacterial community exists in this habitat. The overall bacterial community structure was dominated by Cyanobacteria, Proteobacteria, Bacteroidetes, and Actinobacteria. The most prevalent genera in cyanobacteria were Leptolyngbya, Chroococcidiopsis, and unclassified cyanobacteria accounting for the bulk of cyanobacterial sequences. Within the Proteobacteria, Alphaproteobacteria were the largest class detected, with members of the Acetobacteraceae, particularly the genus Acidiphilium, being the most abundant. Acidiphilium spp. are capable of aerobic ferric iron reduction under moderately acidic conditions, explaining the high levels of iron (II) in this system. This study highlights the extent of unexplored bacterial diversity in this habitat system and sets the premise for elaborating on the ecological function of cryptoendolithic communities.
登录
查看更多内容
影响因子：
2.9
作者：
BELL, RA;ATHEY, PV;SOMMERFELD, MR
通讯作者：
SOMMERFELD, MR
影响因子：
2.8
作者：
Ferris, FG;Lowson, EA
通讯作者：
Lowson, EA
影响因子：
1.7
作者：
Archer, Stephen D. J.;de los Rios, Asuncion;Pointing, Stephen B.
通讯作者：
Pointing, Stephen B.
影响因子：
14.9
作者：
Cole JR;Wang Q;Cardenas E;Fish J;Chai B;Farris RJ;Kulam-Syed-Mohideen AS;McGarrell DM;Marsh T;Garrity GM;Tiedje JM
通讯作者：
Tiedje JM
影响因子：
2
作者：
Beitler, B;Parry, WT;Chan, MA
通讯作者：
Chan, MA