AUTHOR=Tang Zejun , Song Na , Peng Weiye , Yang Yang , Qiu Tian , Huang Chenting , Dai Liangying , Wang Bing 

TITLE=Genome Identification and Expression Analysis of GRAS Family Related to Development, Hormone and Pathogen Stress in Brachypodium distachyon

JOURNAL=Frontiers in Sustainable Food Systems

VOLUME=5

YEAR=2021

URL=https://www.frontiersin.org/journals/sustainable-food-systems/articles/10.3389/fsufs.2021.675177

DOI=10.3389/fsufs.2021.675177

ISSN=2571-581X

ABSTRACT=<p>GRAS transcription factors are widely present in the plant kingdom and play important roles in regulating multiple plant physiological processes. <italic>Brachypodium distachyon</italic> is a model for grasses for researching plant-pathogen interactions. However, little is known about the <italic>BdGRAS</italic> family genes involved in plant response to biotic stress. In this study, we identified 63 genes of the GRAS family in <italic>B. distachyon</italic>. The phylogenetic analysis showed that <italic>BdGRAS</italic> genes were divided into ten subfamilies and unevenly distributed on five chromosomes. qRT-PCR results showed that the <italic>BdGRAS</italic> family genes were involved in the growth and development of <italic>B. distachyon</italic>. Moreover, the expression of the HAM subfamily genes of <italic>BdGRAS</italic> changed during the interaction between <italic>B. distachyon</italic> and <italic>Magnaporthe oryzae</italic>. Interestingly, <italic>BdGRAS31</italic> in the HAM subfamily was regulated by miR171 after inoculation with <italic>M. oryzae</italic>. These results provide insight into the potential functions of the <italic>BdGRAS</italic> family in disease resistance.</p>