Mild salt stress conditions induce different responses in root hydraulic conductivity of phaseolus vulgaris over-time.

ABSTRACT: Plants respond to salinity by altering their physiological parameters in order to maintain their water balance. The reduction in root hydraulic conductivity is one of the first responses of plants to the presence of salt in order to minimize water stress. Although its regulation has been commonly attributed to aquaporins activity, osmotic adjustment and the toxic effect of Na+ and Cl- have also a main role in the whole process. We studied the effects of 30 mM NaCl on Phaseolus vulgaris plants after 9 days and found different responses in root hydraulic conductivity over-time. An initial and final reduction of root hydraulic conductivity, stomatal conductance, and leaf water potential in response to NaCl was attributed to an initial osmotic shock after 1 day of treatment, and to the initial

SUBMITTER: Calvo-Polanco M 

PROVIDER: S-EPMC3942473 | biostudies-literature | 2014

REPOSITORIES: biostudies-literature