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Transcriptomic Analysis Reveal the Molecular Mechanisms of Seed Coat Development in Cucurbita pepo L

Xue, Yingyu ; Shen, Zhiyan ; Tao, Fei ; Zhou, Jingjiang ; Xu, Bingliang

Frontiers in plant science, 2022-02, Vol.13, p.772685-772685 [Periódico revisado por pares]

Switzerland: Frontiers Media S.A

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  • Título:
    Transcriptomic Analysis Reveal the Molecular Mechanisms of Seed Coat Development in Cucurbita pepo L
  • Autor: Xue, Yingyu ; Shen, Zhiyan ; Tao, Fei ; Zhou, Jingjiang ; Xu, Bingliang
  • Assuntos: hull-less Cucurbita pepo L ; hulled Cucurbita pepo ; lignin biosynthesis ; Plant Science ; seed coat development ; transcription factors ; transcription profiling
  • É parte de: Frontiers in plant science, 2022-02, Vol.13, p.772685-772685
  • Notas: ObjectType-Article-1
    SourceType-Scholarly Journals-1
    ObjectType-Feature-2
    content type line 23
    Edited by: Jian Wu, China Agricultural University, China
    Reviewed by: Liu Xiaofen, Zhejiang University, China; Jiayang Xu, Henan Agricultural University, China
    These authors have contributed equally to this work and share first authorship
    This article was submitted to Plant Development and EvoDevo, a section of the journal Frontiers in Plant Science
  • Descrição: is one of the earliest cultivated crops. It is native to Central and South America and is now widely cultivated all over the world for its rich nutrition, short growth period, and high yield, which make it suitable for intercropping. Hull-less L. (HLCP) is a rare variant in nature that is easier to consume. Its seed has a seed kernel but lacks a seed coat. The molecular mechanism underlying the lack of seed coat development in the HLCP variety is not clear yet. The BGISEQ-500 sequencing platform was used to sequence 18 cDNA libraries of seed coats from hulled (CP) and HLCP at three developmental stages (8, 18, and 28 days) post-pollination. We found that lignin accumulation in the seed coat of the HLCP variety was much lower than that of the CP variety. A total of 2,099 DEGs were identified in the CP variety, which were enriched mainly in the phenylpropanoid biosynthesis pathway, amino sugar, and nucleotide sugar metabolism pathways. A total of 1,831 DEGs were identified in the HLCP variety and found to be enriched mainly in the phenylpropanoid biosynthesis and metabolism pathways of starch and sucrose. Among the DEGs, hub proteins (FusA), protein kinases (IRAK4), and several transcription factors related to seed coat development (MYB, bHLH, NAC, AP2/EREBP, WRKY) were upregulated in the CP variety. The relative expression levels of 12 randomly selected DEGs were determined using quantitative real-time PCR analysis and found to be consistent with those obtained using RNA-Seq, with a correlation coefficient of 0.9474. We found that IRAK4 protein kinases, AP2/EREBP, MYB, bHLH, and NAC transcription factors may play important roles in seed coat development, leading to the formation of HLCP.
  • Editor: Switzerland: Frontiers Media S.A
  • Idioma: Inglês
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