The origin and evolution of stomata

TL;DR: In this paper , the steady-state gas exchange, stomatal density, and response to exogenously applied phytohormone abscisic acid (ABA) in nine fern species grown from spores under controlled growth conditions was analyzed.

TL;DR: This review explores the evolution of GIGANTEA's multifaceted functions, integrating into existing signalling pathways and acquiring new roles in circadian clock, light signalling, and stress responses, while shedding light on its mechanisms and evolution in plant lineage.

TL;DR: Research highlights the need for equal genomic efforts on forest trees, which are crucial for terrestrial ecosystems, to understand their drought adaptation mechanisms and preserve biodiversity under climate change.

TL;DR: It is found that large expansions of gene families preceded the origins of green plants, land plants and vascular plants, whereas whole-genome duplications are inferred to have occurred repeatedly throughout the evolution of flowering plants and ferns.

TL;DR: Results suggest that OST1 acts in the interval between ABA perception and ROS production, and the relative positions of ost1 and the other ABA-insensitive mutations in the ABA signaling network (abi1-1, abi2-1 and gca2) are discussed.

TL;DR: Estimating the genome size of extinct woody angiosperms with the use of fossil guard cell size as a proxy for cellular DNA content suggested that seven to nine is the primitive haploid chromosome number of angios perms and that most angiosPerms (approximately 70 percent) have polyploidy in their history.

TL;DR: Experiments have shown that the combination of this previously unreported response ofStomatal density to the level of CO2, with the known responses of stomatal aperture2, cause water use efficiency to be much lower than expected at low levels ofCO2 and over a wide range of humidities.