Journal
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
Volume 182, Issue -, Pages -Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.ecoenv.2019.109476
Keywords
Arbuscular mycorrhiza fungi; Soil microbial activity; Carbon mineralization; Maize rhizosphere; Ecoengineering
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Funding
- National Natural Science Foundation of China [41301314, 41471425]
- Autonomous Innovation Project of Jiangsu Agriculture Science and Technology [CX(15)1005]
- Excellent Scientist Plan of JAAS
- Shuangchuang Talent Plan of Jiangsu Province, China
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This research is aimed to investigate the effect of arbuscular mycorrhiza (AM) fungi on soil microbial activity and carbon mineralization in the maize rhizosphere under potted condition. Glomus etunicatum was used for our experiment. Results showed that AM symbiosis increased the levels of microorganism in the maize rhizosphere soil, and enhanced activity of soil microbial enzymes. After inoculating AM fungi, the contents of dissolved organic carbon (DOC), microbial biomass carbon (MBC) and readily oxidizable carbon (ROC) in the rhizosphere soil of maize increased with varying degrees. We obtained strong evidence that higher contents of MBC, DOC, ROC, superior number of microbes and stronger soil enzyme activities could be responsible for the higher rate of carbon mineralization in AM fungi treatment. AM fungi inoculation was confirmed to be effective to improve the soil quality for larger-scale ecoengineering.
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