Overexpression of a tomato flavanone 3-hydroxylase-like protein gene improves chilling tolerance in tobacco
文献类型: 外文期刊
作者: Meng, Chen 2 ; Zhang, Song 1 ; Deng, Yong-Sheng 3 ; Wang, Guo-Dong 1 ; Kong, Fan-Ying 1 ;
作者机构: 1.Shandong Agr Univ, Coll Life Sci, State Key Lab Crop Biol, Tai An 271018, Shandong, Peoples R China
2.Shandong Univ, Sch Life Sci, Minist Educ, Key Lab Plant Cell Engn & Germplasm Innovat, Jinan 250100, Peoples R China
3.Shandong Acad Agr Sci, Cotton Res Ctr, Minist Agr, Key Lab Cotton Breeding & Cultivat Huang Huai Hai, Jinan 250100, Peoples R China
关键词: Chilling stress;Flavonoids;Flavanone 3-hydroxylase-like protein;Reactive oxygen species;Tomato;Transgenic tobacco
期刊名称:PLANT PHYSIOLOGY AND BIOCHEMISTRY ( 影响因子:4.27; 五年影响因子:4.816 )
ISSN:
年卷期:
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收录情况: SCI
摘要: Flavonoids are secondary metabolites found in plants with a wide range of biological functions, such as stress protection. This study investigated the functions of a tomato (Solanum lycopersicum) flavanone 3-hydroxylase-like protein gene SlF3HL by using transgenic tobacco. The expression of the gene was up-regulated under chilling (4 degrees C), heat (42 degrees C), salt (NaCl) and oxidative (H2O2) stresses. The transgenic plants that displayed high SIF3HL mRNA and protein levels showed higher flavonoid content than the WT plants. Moreover, the expression of three flavonoid biosynthesis-related structural genes, namely, chalcone synthase (CHS), chalcone isomerase (CHI) and flavonol synthase (FLS) was also higher in the transgenic plants than in the WT plants. Under chilling stress, the transgenic plants showed not only faster seed germination, better survival and growth, but also lower malondialdehyde (MDA) accumulation, relative electrical conductivity (REC) and H2O2 and O-2(center dot-) levels compared with WT plants. These results suggested that SlF3HL stimulated flavonoid biosynthesis in response to chilling stress. (C) 2015 Elsevier Masson SAS. All rights reserved.
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Overexpression of a tomato flavanone 3-hydroxylase-like protein gene improves chilling tolerance in tobacco
作者:Zhang, Song;Wang, Guo-Dong;Kong, Fan-Ying;Meng, Chen;Deng, Yong-Sheng
关键词:Chilling stress; Flavonoids; Flavanone 3-hydroxylase-like protein; Reactive oxygen species; Tomato; Transgenic tobacco



