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Comparative transcriptome analysis of aerial and subterranean pods development provides insights into seed abortion in peanut

文献类型: 外文期刊

作者: Zhu, Wei 1 ; Chen, Xiaoping 1 ; Li, Haifen 1 ; Zhu, Fanghe 1 ; Hong, Yanbin 1 ; Varshney, Rajeev K. 2 ; Liang, Xuanqia 1 ;

作者机构: 1.Guangdong Acad Agr Sci GAAS, Crops Res Inst, Guangzhou, Guangdong, Peoples R China

2.Int Crops Res Inst Semi Arid Trop, Hyderabad 502324, Andhra Pradesh, India

关键词: Aerial pod;Subterranean pod;Transcriptome;Peanut;Seed abortion;Development

期刊名称:PLANT MOLECULAR BIOLOGY ( 影响因子:4.076; 五年影响因子:4.89 )

ISSN:

年卷期:

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收录情况: SCI

摘要: The peanut is a special plant for its aerial flowering but subterranean fructification. The failure of peg penetration into the soil leads to form aerial pod and finally seed abortion. However, the mechanism of seed abortion during aerial pod development remains obscure. Here, a comparative transcriptome analysis between aerial and subterranean pods at different developmental stages was produced using a customized NimbleGen microarray representing 36,158 unigenes. By comparing 4 consecutive time-points, totally 6,203 differentially expressed genes, 4,732 stage-specific expressed genes and 2,401 specific expressed genes only in aerial or subterranean pods were identified in this study. Functional annotation showed their mainly involvement in biosynthesis, metabolism, transcription regulation, transporting, stress response, photosynthesis, signal transduction, cell division, apoptosis, embryonic development, hormone response and light signaling, etc. Emphasis was focused on hormone response, cell apoptosis, embryonic development and light signaling relative genes. These genes might function as potential candidates to provide insights into seed abortion during aerial pod development. Ten candidate genes were validated by Realtime RT-PCR. Additionally, consistent with up-regulation of auxin response relative genes in aerial pods, endogenous IAA content was also significantly increased by HPLC analysis. This study will further provide new molecular insight that auxin and auxin response genes potentially contribute to peanut seed and pod development.

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