Diversity and species composition of arbuscular mycorrhizal fungi across maize fields in the southern part of Belgium.

Mycorrhiza
Pierre-Louis AlauxStéphane Declerck

Abstract

Arbuscular mycorrhizal fungi (AMF) are key actors among soil microbial inhabitants, forming beneficial associations with most horticultural plants and crops (e.g., maize). For maize, the world most cultivated cereal, data on AMF species diversity in fields is sparse and even totally nonexistent in the southern part of Belgium where maize represents 8% of the cultivated area. In the present study, 14 maize fields in South Belgium under conventional, conversion, or organic management were analyzed for AMF diversity and species composition using 454 pyrosequencing. A large part (54%) of the 49 AMF species observed were unknown or have not been described in the literature. AMF diversity highly varied among fields, with the number of species ranging between 1 and 37 according to the field. A statistically significant effect of management was measured on AMF diversity, with the highest Hill index values (diversity and richness) under the organic management system compared with conventional management or conversion. Our results suggest a positive effects of organic management on AMF diversity in maize. They also highlight the rather high diversity or richness of AMF and the large portion of sequences not yet ascribed to species, there...Continue Reading

References

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Datasets Mentioned

BETA
SRR12900580

Methods Mentioned

BETA
electrophoresis
PCRs
PCR
Assay

Software Mentioned

JMP § Pro
Ascent
RAxML
Blast2GO

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