文章基本信息

标题：PAP3 Regulates Stamen but Not Petal Development in Capsicum annuum L.
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作者：Ning Ma ; Chen Liu ; Wencai Yang 等
期刊名称：Horticultural Plant Journal
印刷版ISSN：2468-0141
出版年度：2016
卷号：2
期号：2
页码：91-96
DOI：10.1016/j.hpj.2016.02.009
语种：English
出版社：Elsevier
摘要：Pepper flowers are hermaphroditic; the plant's male sterility trait is characterized by its inability to produce pollen grains. In the ABC model of flower development, B-function genes play roles in petal and stamen development in the angiosperm. In this study, a B-class gene designated as PAP3 (GenBank accession no. HM104635) was isolated in pepper. The gene encoded 226 amino acids and shared high similarity with the MADS-box protein family, with a conservative MADS domain and semiconservative K domain. Furthermore, the expression of PAP3 was abundant only in petals and anthers but not in leaves. A functional study employing virus-induced gene silencing (VIGS) showed that knockdown of PAP3 led to the shriveling of pollen grains and male sterility; however, it did not affect petal development. These results suggest an essential role for PAP3 in the development of the pepper stamen and in contributing to the variation of floral traits.
关键词：Capsicum annuum PAP3 MADS-box proteinVIGSflower developmentmale sterility