Effect of rice straw application on microbial community and activity in paddy soil under different water status

TitleEffect of rice straw application on microbial community and activity in paddy soil under different water status
Publication TypeJournal Article
Year of Publication2016
AuthorsPan F.X, Li Y.Y, Chapman S.J, Yao H.Y
JournalEnvironmental Science and Pollution Research
Volume23
Pagination5941-5948
Date PublishedMar
Type of ArticleArticle
ISBN Number0944-1344
Accession NumberWOS:000373609300088
Keywordsacid analysis, agricultural soils, biomass, carbon, decomposition, diversity, FATTY-ACIDS, heavy-metals, Microorganism, microresp (tm), Phospholipid fatty, physiological profiles, quality, Soil water status, Straw application, WHEAT-STRAW
Abstract

Rice straw application and flooding are common practices in rice production, both of which can induce changes in the microbial community. This study used soil microcosms to investigate the impact of water status (saturated and nonsaturated) and straw application (10 g kg(-1) soil) on soil microbial composition (phospholipid fatty acid analysis) and activity (MicroResp((TM)) method). Straw application significantly increased total PLFA amount and individual PLFA components independent of soil moisture level. The amount of soil fungal PLFA was less than Gram-negative, Gram-positive, and actinomycete PLFA, except the drained treatment with rice straw application, which had higher fungal PLFA than actinomycete PLFA at the initial incubation stage. Straw amendment and waterlogging had different effects on microbial community structure and substrate-induced pattern. PLFA profiles were primarily influenced by straw application, whereas soil water status had the greater influence on microbial respiration. Of the variation in PLFA and respiration data, straw accounted for 30.1 and 16.7 %, while soil water status explained 7.5 and 29.1 %, respectively. Our results suggest that (1) the size of microbial communities in paddy soil is more limited by carbon substrate availability rather than by the anaerobic conditions due to waterlogging and (2) that soil water status is more important as a control of fungal growth and microbial community activity.

Short TitleEnviron. Sci. Pollut. Res.Environ. Sci. Pollut. Res.
Alternate JournalEnviron. Sci. Pollut. Res.
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Times Cited: 0
Cited Reference Count: 53
Pan, Fuxia Li, Yaying Chapman, Stephen James Yao, Huaiying
Strategic Priority Research Program of the Chinese Academy of Sciences [XDB15020301]; Fujian Natural Science Foundation [2014I0007]
This work was supported by the Strategic Priority Research Program of the Chinese Academy of Sciences (XDB15020301) and the Fujian Natural Science Foundation (Grant No. 2014I0007). The authors would like to thank Daniel Clark Bowman for the valuable comments on the manuscript.

SPRINGER HEIDELBERG
HEIDELBERG
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