A comparison of the arbuscular mycorrhizal fungal communities among Bangladeshi modern high yielding and traditional rice varieties

Research output: Contribution to journalArticle

Authors

  • Shanaz Parvin
  • Maarten Van Geel
  • Md Muntasir Ali
  • Tanzima Yeasmin
  • Bart Lievens
  • Olivier Honnay

Institutes & Expert groups

  • KUL - Katholieke Universiteit Leuven
  • University of Rajshahi

Documents & links

Abstract

Aims
Arbuscular Mycorrhizal Fungi (AMF) are ubiquitous soil microorganisms playing a vital role in the functioning of agricultural ecosystems. Although AMF are generally considered to have a low host specificity, it has been suggested that modern plant breeding has selected crop genotypes that are more selectively associated with AMF, possibly resulting in modern high yielding varieties (HYV) having a lower AMF diversity than traditional crop varieties. Whether this is true for paddy rice varieties under field conditions is not known so far. Here, we aimed at comparing differences of AMF communities among modern HYV and traditional rice varieties.
Methods
We collected root and soil samples of five Bangladeshi rice varieties (two traditional and three modern HYV) from 40 different rice fields and quantified AMF richness, diversity and community composition through high throughput amplicon sequencing of the small subunit (SSU) of the ribosomal RNA cistron.
Results
Overall, 75 AMF OTUs, distributed over six AMF families with Glomeraceae as predominant family were found. After accounting for differences in soil conditions, we found that AMF diversity significantly differed among the five varieties and was higher in the traditional than modern varieties. The composition and structure of the AMF communities were distinct between the traditional and modern varieties. An indicator species analysis detected 9 OTUs significantly associated with traditional rice varieties, whereas no indicator OTUs were found for the modern HYV.
Conclusions
We conclude that modern breeding coupled with high fertilizer application rates provide a plausible explanation for the reduced AMF diversity and the different AMF community composition between Bangladeshi modern HYV and traditional varieties.

Details

Original languageEnglish
Pages (from-to)1-16
Number of pages16
JournalPlant and Soil
DOIs
Publication statusPublished - 3 Feb 2021

Keywords

  • Arbuscular mycorrhizal fungi (glomeromycotina ), Traditional varieties, Modern high yielding varieties (HYV), Host specificity, AMF richness and diversity, Crop plant breeding

ID: 7058400