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Plant carotenoids: recent advances and future perspectives

Molecular Horticulture 2022年第1期2卷 30-50页

作者： Tianhu Sun sombir rao Xuesong Zhou Li Li Robert W.Holley Center for Agriculture and Health USDA-Agricultural Research ServiceCornell UniversityIthacaNY 14853USA Plant Breeding and Genetics Section School of Integrative Plant ScienceCornell UniversityIthacaNY 14853USA State Key Laboratory of Crop Genetics&Germplasm Enhancement Nanjing Agricultural UniversityNanjing 210095China

Carotenoids are isoprenoid metabolites synthesized de novo in all photosynthetic *** are essential for plants with diverse functions in photosynthesis,photoprotection,pigmentation,phytohormone synthesis,and *** are also critically important for humans as precursors of vitamin A synthesis and as dietary *** vital roles of carotenoids to plants and humans have prompted significant progress toward our understanding of carotenoid metabolism and *** regulators and novel roles of carotenoid metabolites are continuously *** review focuses on current status of carotenoid metabolism and highlights recent advances in comprehension of the intrinsic and multi-dimensional regulation of carotenoid *** also discuss the functional evolution of carotenoids,the agricultural and horticultural application,and some key areas for future research.

关键词： Carotenoids Metabolism Accumulation Regulation Functional evolution

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Co-chaperoning of chlorophyll and carotenoid biosynthesis by ORANGE family proteins in plants

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Molecular Plant 2023年第6期16卷 1048-1065页

作者： Tianhu Sun Peng Wang sombir rao Xuesong Zhou Emalee Wrightstone Shan Lu Hui Yuan Yong Yang Tara Fish Theodore Thannhauser Jiping Liu Michael Mazourek Bernhard Grimm Li Li Robert W.Holley Center for Agriculture and Health USDA-ARSCornell UniversityIthacaNY 14853USA Plant Breeding and Genetics Section School of Integrative Plant ScienceCornell UniversityIthacaNY 14853UA Department of Plant Physiology Institute of BiologyHumboldt-Universitat zu Berlin10115 BerlinGermany School of Biological Sciences The University of Hong KongPokfulam RoadHong Kong 999077China State Key Laboratory of Pharmaceutical Biotechnology School of Life SciencesNanjing UniversityNanjng 210023China

Chlorophylls and carotenoids are essential photosynthetic *** spatiotemporally coordinate the needs of chlorophylls and carotenoids for optimal photosynthesis and fitness in response to diverse environmental and developmental ***,how the biosynthesis pathways of these two pigments are coordinated,particularly at posttranslational level to allow rapid control,remains largely ***,we report that the highly conserved ORANGE(OR)family proteins coordinate both pathways via posttranslationally mediating the first committed enzyme in each *** demonstrate that OR family proteins physically interact with magnesium chelatase subunit I(CHLI)in chlorophyll biosynthesis pathway in addition to phytoene synthase(PSY)in carotenoid biosynthesis pathway and concurrently stabilize CHLI and PSY *** show that loss of OR genes hinders both chlorophyll and carotenoid biosynthesis,limits light-harvesting complex assembly,and impairs thylakoid grana stacking in *** of OR safeguards photosynthetic pigment biosynthesis and enhances thermotolerance in both Arabidopsis and tomato *** findings establish a novel mechanism by which plants coordinate chlorophyll and carotenoid biosynthesis and provide a potential genetic target to generate climate-resilient crops.

关键词： photosynthetic pigments chlorophylls carotenoids OR family proteins CHLl PSY thermotolerance

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