Contribution of PsbS Function and Stomatal Conductance to Foliar Temperature in Higher Plants.

ABSTRACT: Natural capacity has evolved in higher plants to absorb and harness excessive light energy. In basic models, the majority of absorbed photon energy is radiated back as fluorescence and heat. For years the proton sensor protein PsbS was considered to play a critical role in non-photochemical quenching (NPQ) of light absorbed by PSII antennae and in its dissipation as heat. However, the significance of PsbS in regulating heat emission from a whole leaf has never been verified before by direct measurement of foliar temperature under changing light intensity. To test its validity, we here investigated the foliar temperature changes on increasing and decreasing light intensity conditions (foliar temperature dynamics) using a high resolution thermal camera and a powerful adjustable light-emittin

SUBMITTER: Kulasek M 

PROVIDER: S-EPMC4937786 | biostudies-literature | 2016 Jul

REPOSITORIES: biostudies-literature