Light-induced stomatal opening is affected by the guard cell protein kinase APK1b.

ABSTRACT: Guard cells allow land plants to survive under restricted or fluctuating water availability. They control the exchange of gases between the external environment and the interior of the plant by regulating the aperture of stomatal pores in response to environmental stimuli such as light intensity, and are important regulators of plant productivity. Their turgor driven movements are under the control of a signalling network that is not yet fully characterised. A reporter gene fusion confirmed that the Arabidopsis APK1b protein kinase gene is predominantly expressed in guard cells. Infrared gas analysis and stomatal aperture measurements indicated that plants lacking APK1b are impaired in their ability to open their stomata on exposure to light, but retain the ability to adjust their stomatal

SUBMITTER: Elhaddad NS 

PROVIDER: S-EPMC4020820 | biostudies-literature | 2014

REPOSITORIES: biostudies-literature