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类胡萝卜素合成途径中八氢番茄红素合成酶基因研究进展 被引量:7

The Key Gene in Carotenoid Pathway:Reviews and Progress about Phytoene Synthase Gene
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摘要 八氢番茄红素合成酶(phytoenesynthase,PSY)是类胡萝卜素合成途径首要限速酶,催化牻牛儿基牻牛儿基焦磷酸(GGPP)合成八氢番茄红素。在很多作物中存在2~3个PSY旁系同源基因,呈现出组织特异性的功能分化。通过转基因技术改良其在水稻、大豆等作物中的表达,可以显著提高类胡萝卜素含量。本文针对不同植物PSY基因结构、资源多样性、功能及调控机制最新研究进行阐述,为改良和选育高类胡萝卜素含量作物品种提供有效依据。 Phytoene synthase (PSY) is the first committed and rate-controlling step enzyme in carotenoid biosy- nthesis pathway, catalyzing geranylgeranyl-diphosphate to form phytoene. In many plants, two or three PSY paralogs are confirmed to exhibit tissue-specific expression pattern and roles differentiation. The carotenoids content can be significantly improved in the transgenic rice and soybean due to up-regulation of expression of PSY mRNA. In this review, gene structure, germplasm diversity, roles and regulatory mechanisms of PSY are illustrated and useful in metabolic engineering and/or breeding high carotenoid content.
出处 《分子植物育种》 CAS CSCD 北大核心 2014年第2期390-396,共7页 Molecular Plant Breeding
基金 国家自然科学基金(31101543 31272162) 国家科技支撑计划(2012BAD02B04 2013BAD01B04) 国家公益性行业(农业)科研专项(200903016)共同资助
关键词 PSY 类胡萝卜素合成 资源多样性 调控 PSY, Carotenoids synthesis, Germplasm diversity, Regulatory
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