Maria A. Fernandez

TL;DR: Results show that ABA perception by PYR/PYLs plays a major role in regulation of seed germination and establishment, basal ABA signaling required for vegetative and reproductive growth, stomatal aperture, and transcriptional response to the hormone.

TL;DR: Chemical and transgenic approaches can activate ABA signalling via crop PYR/PYL ABA receptors; quinabactin can selectively activate tomato A BA receptors, and overexpression of monomeric-type receptors confers enhanced plant drought resistance.

TL;DR: It is shown that FYVE1 (previously termed FREE1), a recently described component of the endosomal sorting complex required for transport (ESCRT) machinery, interacted with RSL1-receptor complexes and recruited PYL4 to endOSomal compartments, which helps to regulate the turnover of ABA receptors and attenuate ABA signaling.

TL;DR: It is shown that transient calcium-dependent interactions of PYR/PYL ABA receptors with membranes are mediated through a 10-member family of C2-domain ABA-related (CAR) proteins in Arabidopsis thaliana, and the crystal structure of CAR4 was solved, which revealed that a specific CAR signature is likely responsible for the interaction with PYR /PYL receptors and their recruitment to phospholipid vesicles.

TL;DR: An adaptive response termed xerobranching, exhibited by cereal roots, that represses branching when root tips are not in contact with wet soil is reported, which allows roots to rapidly respond to changes in water availability in their local micro-environment and to use internal resources efficiently.