Linsan Liu, Sarah B Jose, Chiara Campoli, Micha M Bayer, Miguel A Sánchez-Diaz, Trisha McAllister, Yichun Zhou, Mhmoud Eskan, Linda Milne, Miriam Schreiber, Thomas Batstone, Ian D Bull, Luke Ramsay, Penny von Wettstein-Knowles, Robbie Waugh, Alistair M Hetherington, Sarah M McKim
Faced with terrestrial threats, land plants seal their aerial surfaces with a lipid-rich cuticle. To breathe, plants interrupt their cuticles with adjustable epidermal pores, called stomata, that regulate gas exchange, and develop other specialised epidermal cells such as defensive hairs. Mechanisms coordinating epidermal features remain poorly understood. Addressing this, we studied two loci whose allelic variation causes both cuticular wax-deficiency and misarranged stomata in barley, identifying the underlying genes, Cer-g/ HvYDA1, encoding a YODA-like (YDA) MAPKKK, and Cer-s/ HvBRX-Solo, encoding a single BREVIS-RADIX (BRX) domain protein...
October 13, 2022: Nature Communications