What Role Might Non-Mating Receptors Play in Schizophyllum commune?

Journal of Fungi

Sophia Wirth¹  Katrin Krause¹  Daniela Freihorst¹  Erika Kothe¹ 

[1] Friedrich Schiller University Jena, Institute of Microbiology, Microbial Communication, 25 07743 Neugasse Jena, Germany;

关键词: Schizophyllum commune;    pheromone receptor-like genes;    B mating-type locus;    mating;    self-recognition;   

DOI  :  10.3390/jof7050399

来源: DOAJ

【 摘 要 】

The B mating-type locus of the tetrapolar basidiomycete Schizophyllum commune encodes pheromones and pheromone receptors in multiple allelic specificities. This work adds substantial new evidence into the organization of the B mating-type loci of distantly related S. commune strains showing a high level of synteny in gene order and neighboring genes. Four pheromone receptor-like genes were found in the genome of S. commune with brl1, brl2 and brl3 located at the B mating-type locus, whereas brl4 is located separately. Expression analysis of brl genes in different developmental stages indicates a function in filamentous growth and mating. Based on the extensive sequence analysis and functional characterization of brl-overexpression mutants, a function of Brl1 in mating is proposed, while Brl3, Brl4 and Brl2 (to a lower extent) have a role in vegetative growth, possible determination of growth direction. The brl3 and brl4 overexpression mutants had a dikaryon-like, irregular and feathery phenotype, and they avoided the formation of same-clone colonies on solid medium, which points towards enhanced detection of self-signals. These data are supported by localization of Brl fusion proteins in tips, at septa and in not-yet-fused clamps of a dikaryon, confirming their importance for growth and development in S. commune.

【 授权许可】

Unknown