Extreme diversification of the mating type-high-mobility group (MATA-HMG) gene family in a plant-associated arbuscular mycorrhizal fungus
Rohan Riley, Philippe Charron, Alexander Idnurm, Laurent Farinelli, Yolande Dalpe, Francis Martin, Nicolas Corradi
NEW PHYTOLOGIST | WILEY | Published : 2014
Arbuscular mycorrhizal fungi (AMF) are important plant symbionts that have long been considered evolutionary anomalies because of their apparent long-term lack of sexuality, but recent explorations of available DNA sequence have challenged this notion by revealing the presence of homologues of fungal mating type-high-mobility group (MATA-HMG) and core meiotic genes in these organisms. To obtain more insights into the sexual potential of AMF, homologues of MATA-HMGs were sought in the transcriptome of three AMF isolates, and their functional and evolutionary trajectories were studied in genetically divergent strains of Rhizophagus irregularis using conventional and quantitative PCR procedures..View full abstract
Awarded by Laboratoire of Excellence ARBRE
We would like to thank Daniel Croll and two anonymous reviewers for comments on a previous version of the manuscript, and Alexander H. Koch and Ian R. Sanders for providing valuable in vitro cultures of R. irregularis. N.C. is a Fellow of the Integrated Microbial Biodiversity program of the Canadian Institute for Advanced Research (CIFAR-IMB). This work was supported by grants from the Natural Sciences and Engineering Research Council of Canada to NC (NSERC-Discovery) and US National Science Foundation to A.I. F.M. receives funding from the Laboratoire of Excellence ARBRE (ANR-11-LABX-0002-01).