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Expression analysis and genetic mapping of three SEPALLATA-like genes from peach (Prunus persica (L.) Batsch)

文献类型： 外文期刊

作者： Xu, Yong 1 ; Zhang, Lin 1 ; Xie, Hua 2 ; Zhang, Yan-Qiu 2 ; Oliveira, M. Margarida 3 ; Ma, Rong-Cai 1 ;

作者机构： 1.Capital Normal Univ, Coll Life Sci, Beijing 100037, Peoples R China

2.Beijing Acad Agr & Forestry Sci, Beijing Agrobiotechnol Res Ctr, Beijing 100097, Peoples R China

3.Univ Nova Lisboa, Inst Tecnol Quim & Biol, IBET, P-2784505 Oeiras, Portugal

关键词： MADS box;floral development;genetic mapping;prunus persica

期刊名称：TREE GENETICS & GENOMES （ 影响因子：2.297； 五年影响因子：2.547 ）

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收录情况： SCI

摘要： SEPALLATA (SEP) MADS box genes play essential and diverse roles in reproductive organ development. To investigate the SEP gene function in peach we isolated three SEP-like genes, PrpMADS2, PrpMADS5, and PrpMADS7, which belong to distinct SEP gene clades. They appeared as single copy genes in the peach genome and were found to preferentially express in flowers and fruits. Arabidopsis transformants expressing 555: PrpMADS2 were indistinguishable from wild-type plants. Overexpression of PrpMADS5 led to earlier flowering. Through chimeric repressor silencing technology, PrpMADS5 was found to function in floral organ development. Expression of PrpMADSl in Arabidopsis caused a dramatic attenuation of both juvenile and adult growth phases and, in severely affected plants, it led to flower formation immediately after the embryonic phase. Two microsatellite markers were developed for PrpMADS2 and PrpMADS5 and assigned to the genetic linkage groups 5 and 1, respectively. PrpMADSl, previously identified as PrpAGL2, and PrpMADS5 were identified as potential loci to modify the flowering time and floral organs in Prunus species. Moreover, our results showed the diversification of SEP genes in peach.

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