Arbuscular mycorrhizal fungal communities of pristine rainforests and adjacent sugarcane fields recruit from different species pools

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Deforestation of the Atlantic rainforest in Brazil and its conversion into sugarcane fields, pose a serious threat to the local biodiversity. The change in land use affects not only macro-organisms, but also microbial communities such as the obligate symbiotic arbuscular mycorrhizal fungi (AMF). We characterized AMF communities along 200-m transects from native forests and into sugarcane fields. Meta-barcoding, and subsequent community and network analyses were used to illustrate the distribution of communities along the transects. Conversion of forest into sugarcane fields did not change alpha diversity, but resulted in a biotic homogenization of the communities. The communities in the sugarcane field was not a subset of the forest community, but recruited taxa from other unsampled species pools. We found a peak in richness in the transition zones which suggests that the AMF community admix across the border. A difference in nestedness and high turnover among transects indicate that forest AMF are locally specialized and have a restricted geographical range.

TidsskriftSoil Biology and Biochemistry
Antal sider9
StatusUdgivet - 2022

Bibliografisk note

Funding Information:
The Usina São José S.A./Grupo Cavalcanti Petribú kindly allowed access to their properties and supported fieldwork logistically. ALG was supported by European Union's Horizon 2020 Marie Curie Individual Fellowship (Grant number: 708530 – DISPMIC). LCM was supported by Conselho Nacional de Pesquisas ( CNPq grant numbers: 446144/2014-2 , 307129/2015-2 , and 306880/2020-2 ). We gratefully acknowledge the kindly information provided by Ana Carolina B. Lins-e-Silva about the forest patches. The authors are thankful to Iolanda R. da Silva and Márcio Pereira for helping during the field trip and sampling.

Publisher Copyright:
© 2022 Elsevier Ltd

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