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PORA1/2-dependent chlorophyll biosynthesis coordinates with carotenoid accumulation to drive petal color patterning in Liriodendron

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Název: PORA1/2-dependent chlorophyll biosynthesis coordinates with carotenoid accumulation to drive petal color patterning in Liriodendron
Autoři: Lingfeng Hu, Yongwei Zhu, Long Yu, Lu Lu, Yingxuan Ma, Renhua Zheng, Jinfang Zhang, Longying Pan, Jinhui Chen, Zhaodong Hao, Jisen Shi
Zdroj: Forestry Research, Vol 5, Iss 1, Pp 1-13 (2025)
Informace o vydavateli: Maximum Academic Press, 2025.
Rok vydání: 2025
Sbírka: LCC:Forestry
Témata: liriodendron, petal coloration, chlorophyll biosynthesis, pora gene, carotenoid metabolism, Forestry, SD1-669.5
Popis: Liriodendron is a highly valued ornamental genus renowned for its distinctive tulip-shaped flowers. Despite its horticultural importance, the molecular mechanisms underlying interspecific variation in petal coloration, namely green petals in Liriodendron chinense (Hemsl.) Sargent, an orange-yellow basal band in Liriodendron tulipifera Linn., and an extended orange-yellow band in their hybrid, remain poorly understood. By integrating morphological, transcriptomic, and metabolomic analyses, we found that orange-yellow pigmentation during petal development is closely associated with chlorophyll degradation and carotenoid biosynthesis. The expression of chlorophyll synthesis genes PORA1 and PORA2 showed a strong positive correlation with chlorophyll content, and their downregulation led to disrupted chloroplast structure and reduced chlorophyll levels. Concurrently, carotenoid biosynthesis genes CRTISO and LCYE were markedly upregulated during the formation of the colored petal band. These results highlight the synergistic roles of chlorophyll and carotenoid metabolism in determining petal color patterning in Liriodendron, providing a genetic basis for the targeted breeding of ornamental traits.
Druh dokumentu: article
Popis souboru: electronic resource
Jazyk: English
ISSN: 2767-3812
Relation: https://doaj.org/toc/2767-3812
DOI: 10.48130/forres-0025-0013
Přístupová URL adresa: https://doaj.org/article/7c6c9ed440ab47ff9ce04f8bc3a4e7ad
Přístupové číslo: edsdoj.7c6c9ed440ab47ff9ce04f8bc3a4e7ad
Databáze: Directory of Open Access Journals
Popis
Abstrakt:Liriodendron is a highly valued ornamental genus renowned for its distinctive tulip-shaped flowers. Despite its horticultural importance, the molecular mechanisms underlying interspecific variation in petal coloration, namely green petals in Liriodendron chinense (Hemsl.) Sargent, an orange-yellow basal band in Liriodendron tulipifera Linn., and an extended orange-yellow band in their hybrid, remain poorly understood. By integrating morphological, transcriptomic, and metabolomic analyses, we found that orange-yellow pigmentation during petal development is closely associated with chlorophyll degradation and carotenoid biosynthesis. The expression of chlorophyll synthesis genes PORA1 and PORA2 showed a strong positive correlation with chlorophyll content, and their downregulation led to disrupted chloroplast structure and reduced chlorophyll levels. Concurrently, carotenoid biosynthesis genes CRTISO and LCYE were markedly upregulated during the formation of the colored petal band. These results highlight the synergistic roles of chlorophyll and carotenoid metabolism in determining petal color patterning in Liriodendron, providing a genetic basis for the targeted breeding of ornamental traits.
ISSN:27673812
DOI:10.48130/forres-0025-0013