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022 _a0176-1617
040 _aMSU
_bEnglish
_cMSU
_erda
050 0 0 _aQK711.2 JOU
100 1 _aMeng, Xia
_eauthor
245 1 3 _aAn R2R3-MYB gene, LeAN2, positively regulated the thermo-tolerance in transgenic tomato
_ccreated by Xia Meng, Jie-Ru Wang, Guo-Dong Wang, Xiao-Qing Liang, Xiao-Dong Li and Qing-Wei Meng
264 1 _aAmsterdam:
_bElsevier GmbH,
_c2015.
336 _2rdacontent
_atext
_btxt
337 _2rdamedia
_aunmediated
_bn
338 _2rdacarrier
_avolume
_bnc
440 _aJournal of Plant Physiology
_vVolume 175
520 3 _aLeAN2 is an anthocyanin-associated R2R3-MYB transcription factor, but little is known about its function in imparting thermo-tolerance to higher plants. To examine the function of LeAN2 in the regulation of heat stress in tomato, LeAN2 was isolated and transgenic tomato plants were obtained. Overexpression of LeAN2 under the control of the CaMV35S promoter in tomato induced the up-regulation of several structural genes in the anthocyanin biosynthetic pathway as well as anthocyanin accumulation in transgenic tomato plants. Transgenic tomato plants showed enhanced tolerance to heat stress by maintaining higher fresh weight (FW), net photosynthetic rate (Pn) and maximal photochemical efficiency of photosystem II (PSII) (Fv/Fm) compared with wild-type (WT) plants. Furthermore, transgenic plants showed higher non-enzymatic antioxidant activity, lower levels of reactive oxygen species (ROS), and higher contents of D1 protein than that in WT plants under heat stress. These results indicate that LeAN2 had an important function in heat stress resistance.
650 _aAnthocyanin
650 _aHeat stress
650 _aLeAN2
700 1 _aWang, Jie-Ru
_eco-author
700 1 _aWang, Guo-Dong
_eco-author
700 1 _aLiang, Xiao-Qing
_eco-author
700 1 _aLi, Xiao-Dong
_eco-author
700 1 _aMeng, Qing-Wei
_eco-author
856 _uhttps://doi.org/10.1016/j.jplph.2014.09.018
942 _2lcc
_cJA
999 _c169296
_d169296