Recent Posts

GABA signalling modulates stomatal opening to enhance plant water use efficiency and drought resilience (Nature Comms)

Gamma-aminobutyric acid (GABA) is a non-protein amino acid produced by animals and plants, but is its function conserved across kingdoms? In mammals, GABA acts as chemical messenger in the central nervous system by inhibiting neurotransmission. In plants, GABA accumulates in response to stress but its…

Natural variation identifies a Pxy gene controlling vascular organization and formation of nodules and lateral roots in Lotus japonicus (New Phytol.)

Symbiosis between legumes and nitrogen-fixing bacteria such as Mesorhizobium loti requires an exchange of signals. Plants recognize both specific nod factors (lipochitooligosaccharides) as well as cell-surface exopolysaccharides through distinct pathways. The M. loti exoU mutant fails to properly form…

Not PTI or ETI: PTI and ETI (Nature)

Two very exciting papers have come out this week in Nature that address a long-standing question about the relative contributions of two different plant immunity pathways. PTI (pathogen-triggered immunity) recognizes conserved pathogen signatures at the plant cell surface; a model system for PTI is the…

Redox regulation of NADP-malate dehydrogenase is vital under fluctuating light environment (PNAS)

Redox switches regulate photosynthetic reactions and are mediated by conserved cysteine pairs, activated by reduction under light and deactivated by oxidation in the dark. Those reactions are mediated by thioredoxins (Trx). Usually, only plastidic and not cytosolic isozymes show these redox switches.…

Regulation of ACD6 ion channel-like protein by small peptides (bioRxiv)

ACCELERATED CELL DEATH 6 (ACD6) positively regulates the signaling of the plant defense hormone salicylic acid (SA). It was originally identified by the study of natural variation in defense responses of Arabidopsis thaliana. The naturally hyperactive ACD6-Est-I allele confers broad-spectrum disease…

Review. The Fast and The Furious: Rapid long-range signaling in plants (Plant Physiol)

Plants possess a complex series of local and systemic signaling networks driven by multiple stimuli. They translate this information into plant-wide response to coordinate their physiology and development.  Here, Johns et al. review these communication pathways, which function across different scales…

Microbiota-root-shoot axis modulation by MYC2 favors Arabidopsis growth over defense under suboptimal light (bioRxiv)

Microbiota-root-shoot axis modulation by MYC2 favors Arabidopsis growth over defense under suboptimal light Below- and aboveground plant organs experience distinct biotic and abiotic environments. Thus, coordination between root and shoot responses are likely crucial for plant survival. Given that…

CAMEL in the canal: Regulation of PIN proteins during canalization (Science)

Auxin transport during development or wound regeneration is known to require auxin-induced channel or ‘canal’ formation that includes polar localization of PIN auxin transport proteins. Hajný and colleagues have characterized a receptor-like kinase (RLK) complex involved in auxin-induced pattern…

Review: Optogenetics in plants (New Phytol.)

Optogenetics is the process by which light can modify cellular behavior, through the action of light-sensitive proteins or other molecules. In many respects, optogenetics seems more like science fiction than reality; the realization that neural activity in the brain can be altered through pulses…