Comparative transcriptome analysis reveals differential gene expression in sterile and fertile rubber tree varieties during flower bud differentiation

Li, Fēi; Wang, Ying; Heqiong, Gao; Zhang, Xiaofei; Zhuang, Nansheng

doi:10.1016/j.jplph.2021.153506

Cited by 2 publications

(1 citation statement)

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“…For example, CYP704B1 is a long-chain fatty acid hydroxylase, which is essential for sporopollenin synthesis and pollen wall formation [ 29 ]. The low level of CYP704B1 expression may lead to insufficient sporopollenin synthesis and pollen wall defects [ 36 ]. Our results showed that the expression of Rd-circR83 and Rd-circR103, which regulate CYP704B1 , was significantly upregulated during the pollen stage.…”

Section: Discussionmentioning

confidence: 99%

Identification and Characterization of Circular RNAs Involved in the Flower Development and Senescence of Rhododendron delavayi Franch

Xiao

Zhang

et al. 2022

IJMS

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Floral development and senescence are a crucial determinant for economic and ornamental value. CircRNAs play an essential role in regulating plant growth and development; however, there is no systematic identification of circRNAs during the lifespan of flowers. This study aims to explore the expression profile and functional role of circRNAs in the full flowering stages of Rhododendron delavayi Franch. We carried out transcriptome sequencing of the six stages of Rhododendron delavayi Franch flowers to identify the circular RNA expression profile. In addition, using bioinformatics methods, we explored the functions of circRNAs, including analysis of the circRNA-miRNA-mRNA network, short time-series expression miner (STEM), and so on. We identified 146 circRNAs, of which 79 were differentially expressed from the budding to fading stages. Furthermore, using STEM analysis, one of the 42 circRNA expression model profiles was significantly upregulated during the senescence stage, including 16 circRNAs. Additionally, 7 circRNA-miRNA-mRNA networks were constructed with 10 differentially expressed circRNAs, in which some target mRNA may regulate the development and senescence of the Rhododendron flowers. Finally, by analyzing the correlation between circRNAs and mRNA, combined with existing reports, we proposed that circRNAs play a regulatory role during flower development and senescence by mediating the jasmonate signaling pathway. Overall, these results provide new clues to the potential mechanism of circRNAs acting as novel post-transcriptional regulators in the development and senescence process of flowers.

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Section: Discussionmentioning

confidence: 99%