Journal article

Effects of periodic photoinhibitory light exposure on physiology and productivity of Arabidopsis plants grown under low light

Yonglan Tian, Joanna Sacharz, Maxwell A Ware, Huayong Zhang, Alexander V Ruban

JOURNAL OF EXPERIMENTAL BOTANY | OXFORD UNIV PRESS | Published : 2017

Abstract

This work examined the long-term effects of periodic high light stress on photosynthesis, morphology, and productivity of low-light-acclimated Arabidopsis plants. Significant photoinhibition of Arabidopsis seedlings grown under low light (100 μmol photons m-2 s-1) was observed at the beginning of the high light treatment (three times a day for 30 min at 1800 μmol photons m-2 s-1). However, after 2 weeks of treatment, similar photosynthesis yields (Fv/Fm) to those of control plants were attained. The daily levels of photochemical quenching measured in the dark (qPd) indicated that the plants recovered from photoinhibition within several hours once transferred back to low light conditions, wit..

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