Regulation of photosynthesis of C3 plants in response to progressive drought: stomatal conductance as a reference parameter.

ABSTRACT: We review the photosynthetic responses to drought in field-grown grapevines and other species. As in other plant species, the relationship between photosynthesis and leaf water potential and/or relative water content in field-grown grapevines depends on conditions during plant growth and measurements. However, when light-saturated stomatal conductance was used as the reference parameter to reflect drought intensity, a common response pattern was observed that was much less dependent on the species and conditions. Many photosynthetic parameters (e.g. electron transport rate, carboxylation efficiency, intrinsic water-use efficiency, respiration rate in the light, etc.) were also more strongly correlated with stomatal conductance than with water status itself. Moreover, steady-state chlorophy

SUBMITTER: Medrano H 

PROVIDER: S-EPMC4233802 | biostudies-literature | 2002 Jun

REPOSITORIES: biostudies-literature