FERONIA receptor kinase contributes to plant immunity by suppressing jasmonic acid signaling in Arabidopsis thaliana (Curr. Biol. - $)
Plant Science Research WeeklyReceptor-like kinase FERONIA plays important role in the regulation of plant growth as well as interactions with the environment. In order to understand how FER affects plant growth Guo et al. examined global transcriptome changes in fer mutant. The authors observed that genes up-regulated by stress…
Abscisic acid-independent stomatal CO2 signal transduction pathway and convergence of CO2 and ABA signaling downstream of OST1 kinase (PNAS - $)
Plant Science Research WeeklyThe global increase in CO2 concentrations results in the reduced opening of the stomata. Although reduction in the stomatal opening in response to drought relies on abscisic acid (ABA), less is known about the mechanism controlling stomatal aperture in response to elevated CO2. Hsu et al. examined stomatal…
The Arabidopsis negative regulator of root hydraulics XND1 is involved in abiotic and biotic stress responses (Nature Comm.)
Plant Science Research WeeklyProper uptake and management of water is essential for plant growth and adaptation to stress. However, there are gaps in the understanding of the genetics of root hydraulics, including the regulatory components. Tang et al. used a genome-wide associate analysis approach to identify XYLEM NAC DOMAIN 1 (XND1),…
ABA-mediated regulation of stomatal density is OST1-independent (Plant Direct)
Plant Science Research WeeklyStomata are not only important for CO2 uptake, but are also important in limiting water loss when the water availability is running low. Stress hormone ABA activates protein kinase OPEN STOMATA 1 (OST1) leading to opening of ion channels, water efflux and stomatal closure. Increased levels of ABA decrease…
Members of the Arabidopsis FORKED1-LIKE gene family act to localize PIN1 in developing veins (J Exp Bot.)
Plant Science Research WeeklyVascular system is one of the adaptive features for terrestrial plants. Polar localization of PIN1 is essential for creating directional auxin flow, resulting in vein pattern formation. Mariyamma et al. propose that FORKED1 (FKD1) and its homologues control the PIN1 polar localization. The team identified…
Arabidopsis DEFECTIVE KERNEL1 regulates cell wall composition and axial growth in the inflorescence stem
Blog, Plant Science Research Weekly, Research, Research BlogPlants can reach impressive heights, thanks to the mechanical stability provided by the cell walls. The required strength is ensured by coordination of cell wall deposition and cell expansion. Plant-specific calpain (DEK1) regulates axial stem growth, as lines overexpressing the calpain domain develop…