The interactive effects of elevated ozone and wheat cultivars on soil microbial community composition and metabolic diversity

TitleThe interactive effects of elevated ozone and wheat cultivars on soil microbial community composition and metabolic diversity
Publication TypeJournal Article
Year of Publication2015
AuthorsBao X.L, Yu J., Liang W.J, Lu C.Y, Zhu J.G, Li Q.
JournalApplied Soil Ecology
Volume87
Pagination11-18
Date PublishedMar
Type of ArticleArticle
ISBN Number0929-1393
Accession NumberWOS:000346644300002
Keywordsbiomass, CARBON ALLOCATION, co2, cultivars, Free-air ozone enrichment, growth, Microbial functional diversity, O-3, Ozone-tolerance, plant, PROFILES, responses, Wheat, WINTER-WHEAT, YIELD
Abstract

Human-induced global changes have important impacts on terrestrial ecosystems. Although aboveground influences of elevated ozone have been widely studied, relatively little attention has been paid to the belowground subsystem, nevertheless it is critical to study belowground effects in determining the long-term consequences of ozone exposure to ecosystems. Here, we investigated the effects of elevated ozone on soil microbial community structure and functional diversity using the free-air ozone enrichment platform (FAOE). We detected that soil fungal phospholipid fatty acid and the fungal/bacterial ratio were significantly ower under elevated ozone than under ambient ozone at the wheat ripening stage. Through determining soil microbial metabolic diversity as evaluated by variations in the microbial utilization rates of different carbon sources among different wheat cultivars, we found that soil microbial communities inhabiting the rhizosphere of ozone-tolerant cultivars preferred to consume easily degradable carbon sources, while more complex carbon sources were preferably utilized by those associated with ozone-sensitive cultivars. These changes may in turn promote (ozone-tolerant wheat cultivars)/inhibit (ozone-sensitive wheat cultivars) plant growth through alterations in nutrient availability and resource distribution. (C) 2014 Elsevier B.V. All rights reserved.

Short TitleAppl. Soil Ecol.Appl. Soil Ecol.
Alternate JournalAppl. Soil Ecol.
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Times Cited: 2
Cited Reference Count: 46
Bao, Xuelian Yu, Jun Liang, Wenju Lu, Caiyan Zhu, Jianguo Li, Qi
National Natural Science Foundation of China [31270487, 41101242]; Knowledge Innovation Program of Chinese Academy of Sciences [KZCX2-EW-414]; Instrument Developing Project of the Chinese Academy of Sciences [YZ0603]; Global Environment Research Fund by the Ministry of the Environment, Japan [C-062]
The authors are grateful to Prof. Xinkai Zhu in Yangzhou University for supplying different wheat cultivars. This research was supported by the National Natural Science Foundation of China (Grant No. 31270487 and No. 41101242) and the free-air ozone enrichment platform used in this study were supported by the Knowledge Innovation Program of Chinese Academy of Sciences (Grant No. KZCX2-EW-414), the Instrument Developing Project of the Chinese Academy of Sciences (Grant No. YZ0603), and the Global Environment Research Fund by the Ministry of the Environment, Japan (Grant No. C-062).
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Liang, WJ (reprint author), Chinese Acad Sci, Inst Appl Ecol, POB 417, Shenyang 110016, Peoples R China.
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