After years of experience in Forestry, I specialized in Forest Microbiology at the University of Tokyo, where I am currently a Ph.D. student. My doctoral research investigates arbuscular mycorrhizal fungi (AMF) communities associated with temperate and tropical tree species. Besides my academic background, specific experiences gave me specialized skills in Biodiversity Informatics and Ecological niche modeling, Programming for data processing, Geographic Information Systems, and Mapping. In the future, I would like to work at Research Institutes and teach at higher Institutions Worldwide. Mycorrhizal Applications, Biological Invasion of Forests and Plantations, Silviculture, Forest Management, Trees and Forest Diseases, and Biodiversity Conservation with regard to Climate Change belong to my research priorities.
15
Year-long dynamics of arbuscular mycorrhizal fungi communities in roots and surrounding soil of Cryptomeria japonica
A. K. G. DJOTAN , N . MATSUSHITA, K. FUKUDA
The University of Tokyo, Graduate School of Agricultural and Life Sciences (Laboratory of Forest Botany) 1-1-1, Yayoi, Bunkyo, Tokyo, 113-8657, Japan
Arbuscular mycorrhizal fungi (AMF) live simultaneously inside host’s root and soil to mak e mycorrhizal symbiosis functional. However, the dynamics of soil properties and the relationship between the intra- and extraradical AMF communities of specific host plants remain unclear . In this study, we collected paired root-soil samples of the same Cryptomeria japonica trees every two months for a year. We used Illumina's next-generation amplicon sequencing targeting the SSU rDNA to clarify the dynamics and the relationship between root and soil AMF communities. We found that only soil pH and Phosphorus varied between seasons and the AMF community was stable yearlong but compositional ly and structural ly different between root and soil at all samplings. Our field data shed more light on the common contradictions in the dynamics of AMF communities and supported the theoretical passenger and stochastic hypotheses. In conclusion, only a few species makes up the dynamics of the AMF community and caution is needed in studying it