Arid
DOI10.3389/fmicb.2015.00304
Bacterial community of cushion plant Thylacospermum ceaspitosum on elevational gradient in the Himalayan cold desert
Rehakova, Klara1,2; Chronakova, Alica3; Kristufek, Vaclav3; Kuchtova, Barbora3; Capkova, Katerina1,4; Scharfen, Josef5,6,7; Capek, Petr4; Dolezal, Jiri1,4
通讯作者Rehakova, Klara
来源期刊FRONTIERS IN MICROBIOLOGY
ISSN1664-302X
出版年2015
卷号6
英文摘要

Although bacterial assemblages are important components of soils in arid ecosystems, the knowledge about composition, life-strategies, and environmental drivers is still fragmentary, especially in remote high-elevation mountains. We compared the quality and quantity of heterotrophic bacterial assemblages between the rhizosphere of the dominant cushion-forming plant Thylacospermum ceaspitosum and its surrounding bulk soil in two mountain ranges (East Karakoram: 4850-5250 m and Little Tibet: 5350-5850 m), in communities from cold steppes to the subnival zone in Ladakh, arid Trans-Himalaya, northwest India. Bacterial communities were characterized by molecular fingerprinting in combination with culture-dependent methods. The effects of environmental factors (elevation, mountain range, and soil physico-chemical parameters) on the bacterial community composition and structure were tested by multivariate redundancy analysis and conditional inference trees. Actinobacteria dominate the cultivable part of community and represent a major bacterial lineage of cold desert soils. The most abundant genera were Streptomyces, Arthrobacter, and Paenibacillus, representing both r- and K-strategists. The soil texture is the most important factor for the community structure and the total bacteria counts. Less abundant and diverse assemblages are found in East Karakoram with coarser soils derived from leucogranite bedrock, while more diverse assemblages in Little Tibet are associated with finer soils derived from easily weathering gneisses. Cushion rhizosphere is in general less diverse than bulk soil, and contains more r-strategists. K-strategists are more associated with the extremes of the gradient, with drought at lowest elevations (4850-5000 m) and frost at the highest elevations (5750-5850 m). The present study illuminates the composition of soil bacterial assemblages in relation to the cushion plant T ceaspitosum in a xeric environment and brings important information about heterotrophic bacteria in Himalayan soil.


英文关键词heterotrophic microbial community subnival soil life strategy Ladakh mountains Himalayas
类型Article
语种英语
国家Czech Republic
收录类别SCI-E
WOS记录号WOS:000353842400001
WOS关键词POLYMERASE-CHAIN-REACTION ; IN-SITU DETECTION ; MICROBIAL COMMUNITY ; FUNDAMENTALLY DIFFERENT ; CULTURABLE BACTERIA ; GLACIER FOREFIELD ; GROWTH STRATEGY ; SOIL-PH ; DIVERSITY ; SUCCESSION
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/2XILL650/187370
作者单位1.Acad Sci Czech Republic, Inst Bot, Dept Phycol Ecol, Vvi, CS-37982 Trebon, Czech Republic;
2.Acad Sci Czech Republic, Ctr Biol, Inst Hydrobiol, Vvi,Dept Microbial Water Ecol, Ceske Budejovice, Czech Republic;
3.Acad Sci Czech Republic, Ctr Biol, Inst Soil Biol, Vvi,Dept Soil Microbiol & Soil Chem, Ceske Budejovice, Czech Republic;
4.Univ South Bohemia, Fac Sci, Dept Bot, Ceske Budejovice, Czech Republic;
5.Charles Univ Prague, Fac Hosp, Hradec Kralove, Czech Republic;
6.Charles Univ Prague, Fac Med, Inst Clin Microbiol, Hradec Kralove, Czech Republic;
7.Reg Hosp Trutnov Inc, Dept Med Microbiol & Immunol, Natl Reference Lab Pathogen Actinomycetes, Trutnov, Czech Republic
推荐引用方式
GB/T 7714
Rehakova, Klara,Chronakova, Alica,Kristufek, Vaclav,et al. Bacterial community of cushion plant Thylacospermum ceaspitosum on elevational gradient in the Himalayan cold desert[J],2015,6.
APA Rehakova, Klara.,Chronakova, Alica.,Kristufek, Vaclav.,Kuchtova, Barbora.,Capkova, Katerina.,...&Dolezal, Jiri.(2015).Bacterial community of cushion plant Thylacospermum ceaspitosum on elevational gradient in the Himalayan cold desert.FRONTIERS IN MICROBIOLOGY,6.
MLA Rehakova, Klara,et al."Bacterial community of cushion plant Thylacospermum ceaspitosum on elevational gradient in the Himalayan cold desert".FRONTIERS IN MICROBIOLOGY 6(2015).
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