Ectopic expression of an apple apomixis-related gene MhFIE induces co-suppression and results in abnormal vegetative and reproductive development in tomato

文献类型： 外文期刊

第一作者： Liu, Dan-Dan

作者： Liu, Dan-Dan;Dong, Qing-Long;Fang, Mou-Jing;Chen, Ke-Qin;Hao, Yu-Jin;Dong, Qing-Long

作者机构：

关键词： Apple;MhFIE;Polycomb proteins;Flower and fruit development;Parthenocarpy

期刊名称：JOURNAL OF PLANT PHYSIOLOGY （ 影响因子：3.549； 五年影响因子：4.164 ）

ISSN： 0176-1617

年卷期： 2012 年 169 卷 18 期

页码：

收录情况： SCI

摘要： It has been well documented that FERTILIZATION-INDEPENDENT ENDOSPERM (FIE) plays important regulatory roles in diverse developmental processes in model plant Arabidopsis thaliana. However, it is largely unknown how FIE genes function in economically important crops. In this study, MhFIE gene, which was previously isolated from apomictic tea crabapple (Malus hupehensis Redh. var. pingyiensis), was introduced into tomato. The hemizygous transgenic tomato lines produced curly leaves and decreased in seed germination. In addition, the co-suppression of the transgenic MhFIE and endogenous (SlFIE) genes occurred in homozygous transgenic tomatoes. As a result, FIE silencing brought about abnormal phenotypes during reproductive development in tomato, such as increased sepal and petal numbers in flower, a fused ovule and pistil and parthenocarpic fruit formation. A yeast two-hybrid assay and bimolecular fluorescence complementation (BiFC) demonstrated that MhFIE interacted with a tomato protein, EZ2 (SlEZ2). Its ectopic expression and SlFIE co-suppression notably influenced the expression of genes associated with leaf, flower, and fruit development. Therefore, together with other PcG proteins, FIE was involved in the regulation of vegetative and reproductive development by modulating the expression of related genes in plants. (C) 2012 Elsevier GmbH. All rights reserved.

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