We present unresolved questions in plant abiotic stress biology as posed by 15 research
groups with expertise spanning eco-physiology to cell and molecular biology. Common …

Stomata, the pores formed by a pair of guard cells, are the main gateways for water
transpiration and photosynthetic CO2 exchange, as well as pathogen invasion in land …

Abiotic stresses, including drought and salinity, trigger a complex osmotic-stress and
abscisic acid (ABA) signal transduction network. The core ABA signalling components are …

Stomatal movements are crucial for the control of plant water status and protection against
pathogens. Assays on epidermal peels revealed that, similar to abscisic acid (ABA) …

Stomatal guard cells are widely recognized as the premier plant cell model for membrane
transport, signaling, and homeostasis. This recognition is rooted in half a century of research …

Salt stress impacts multiple aspects of plant metabolism and physiology. For instance it
inhibits photosynthesis through stomatal limitation, causes excessive accumulation of …

Aquaporins function as water and neutral solute channels, signaling hubs, disease virulence
factors, and metabolon components. We consider plant aquaporins that transport ions …

Carbonic anhydrases (CAs) are zinc metalloenzymes that catalyze the interconversion of
CO 2 and HCO 3− and are ubiquitous in nature. Higher plants contain three evolutionarily …

Highlights•Environmental regulation of stomatal apertures invokes complex signaling
networks.•Blue light-induced stomatal opening involves starch and triacylglycerol …

Chloride (Cl−) is an essential plant nutrient but under saline conditions it can accumulate to
toxic levels in leaves; limiting this accumulation improves the salt tolerance of some crops …