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. 2019 Feb 3;24(3):556. doi: 10.3390/molecules24030556

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© 2019 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

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Overexpression of SlMAPK3 improved photosynthetic activity under drought stress. (A) chlorophyll content, (B) quantum efficiency of PSII photochemistry (øPSII), (C) the maximum photochemical efficiency of PSII (Fv/Fm), (D) the efficiency of energy capture by open PSII reaction centers (Fv’/Fm’), (E) non-photochemical quenching (NPQ), and (F) photochemical quenching (qP). Two-months-old seedlings of WT and transgenic lines were subjected to drought stress by withholding water supply for 20 successive days and well-watered plants (watered every alternate day) served as control. Data represent mean ±SE of three biological replicates. **, * significant level differed at p < 0.01 and p < 0.05, respectively.