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PHYSIOLOGICAL AND BIOCHEMICAL PROPERTIES ANALYSIS OF LATE-BOLTING TRANSGENIC CHINESE CABBAGE (BRASSICA RAPA L. SSP PEKINENSIS)

文献类型： 外文期刊

作者： Xia, G. 1 ; He, Q. 2 ; Zhao, S. 3 ;

作者机构： 1.Tonghua Normal Univ, Coll Biol, Tonghua, Jilin, Peoples R China

2.Shandong Acad Agr Sci, Inst Vegetable Crops, Jinan, Peoples R China

3.Shandong Univ, Coll Life Sci, Jinan 250100, Peoples R China

关键词： Chinese cabbage;LFY gene;RNA interference;physiological biochemistry properties

期刊名称：JOURNAL OF ANIMAL AND PLANT SCIENCES （ 影响因子：0.49； 五年影响因子：0.686 ）

ISSN： 1018-7081

年卷期： 2015 年 25 卷 3 期

页码：

收录情况： SCI

摘要： LFYgene plays important roles in determining plant flowering mainly by controlling the timing of phase transition. Constitutive under-expression of LFY gene in Arabidopsis resulted in the formation of late flowering and highly branching phenotype. In this paper, we investigated some physiological and biochemical properties of the transformantsthat were down-regulated LFY gene expression to delay bolting and flowering of Chinese cabbage (Brassica rapa L. ssp. pekinensis) by RNAi approach. The results showed that transgenic plants had more leaves, but a shorter height compared to control. Meanwhile, it was greatly reduced whatever the expression of LFY gene and the content of soluble sugar, sucrose, starch, IAA, GA, ABA, or activities of peroxidase, a-amylase and esterase, although soluble protein content and zeatin were increased. All results indicated that the variation of nutrient metabolism and endogenous hormones were the root of late-bolting and flowering in transformants. They affected different signal transduction pathways and induced late-bolting and flowering.

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