SlCNR regulates postharvest water loss and wax accumulation in tomato fruit and directly represses the transcription of very-long-chain (VLC) alkane biosynthesis-related genes SlCER1-2 and SlCER6

Chen, Di; Wang, Tingyu; Huang, Hua; Zhang, Qiaoli; Chen, Xue; Sun, Zongyan; Song, Yanping; Yi, Yuetong; Liu, Chengxia; Grierson, Donald; Cao, Jiankang; Fu, Daqi; Zhu, Hongliang; Qu, Guiqin

doi:10.1016/j.postharvbio.2023.112641

Cited by 4 publications

(1 citation statement)

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“…Knockout of SlSPL-CNR leads to increased flavonoid content within fruits, achieved by repressing SlMYB12 , a key regulator of flavonoid biosynthesis ( Zhou et al., 2023 ). Moreover, it directly controls genes associated with wax biosynthesis, notably SlCER1–2 ( ECERIFERUM1 ) and SlCER6 ( β-KETOACYL-COENZYME A SYNTHASE6 ), with the aim of reducing postharvest water loss and enhancing fruit quality ( Chen et al., 2024 ). SlSPL-CNR ’s upstream regulatory network involves intricate interactions with other genes like RIN and SlBL4 ( BELL-LIKE HOMEODOMAIN4 ), influencing fruit ripening and chloroplast development ( Zhou et al., 2012 ; Yan et al., 2020 ).…”

Section: The Multifaceted Role Of Slspl-cnr During...mentioning

confidence: 99%

Epigenetic insights into an epimutant colorless non-ripening: from fruit ripening to stress responses

Zhu,

Yang,

Chen

2024

Front. Plant Sci.

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The epigenetic machinery has received extensive attention due to its involvement in plant growth, development, and adaptation to environmental changes. Recent studies often highlight the epigenetic regulatory network by discussing various epigenetic mutants across various plant species. However, a systemic understanding of essential epigenetic regulatory mechanisms remains limited due to a lack of representative mutants involved in multiple biological processes. Colorless Non-ripening (Cnr), a spontaneous epimutant isolated from a commercial population, was initially characterized for its role in fruit ripening regulation. Cnr fruits exhibit an immature phenotype with yellow skin, attributed to hypermethylation of the SQUAMOSA PROMOTER BINDING PROTEIN-LIKE-CNR (SlSPL-CNR) promoter, resulting in the repression of gene expression. In addition to DNA methylation, this process also involves histone modification and microRNA, integrating multiple epigenetic regulatory factors. Interestingly, knockout mutants of SlSPL-CNR display phenotypical distinctions from Cnr in fruit ripening, indicating complex genetic and epigenetic control over the non-ripening phenotype in Cnr fruits. Accumulating evidence suggests that Cnr epimutation is pleiotropic, participating in various biological processes such as Cd stress, Fe deficiency, vivipary, and cell death. Therefore, the Cnr epimutant serve as an excellent model for unveiling how epigenetic mechanisms are involved in diverse biological processes. This review paper focuses on recent research advances regarding the Cnr epimutant, delving into its complex genetic and epigenetic regulatory mechanisms, with the aim of enhancing our understanding and facilitating the development of high-quality, high-yield crops through epigenetic modification.

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