Gene Regulation Shifts Shed Light on Fungal Adaption in Plant Biomass Decomposers.

ABSTRACT: Fungi dominate the recycling of carbon sequestered in woody biomass. This process of organic turnover was first evolved among "white rot" fungi that degrade lignin to access carbohydrates and later evolved multiple times toward more efficient strategies to selectively target carbohydrates-"brown rot." The brown rot adaption was often explained by mechanisms to deploy reactive oxygen species (ROS) to oxidatively attack wood structures. However, its genetic basis remains unclear, especially in the context of gene contractions of conventional carbohydrate-active enzymes (CAZYs) relative to white rot ancestors. Here, we hypothesized that these apparent gains in brown rot efficiency despite gene losses were due, in part, to upregulation of the retained genes. We applied comparative transcriptom

SUBMITTER: Zhang J 

PROVIDER: S-EPMC6867892 | biostudies-literature | 2019 Nov

REPOSITORIES: biostudies-literature