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Mol Plant. 2015 Jan;8(1):68-82. doi: 10.1016/j.molp.2014.12.007. Epub 2014 Dec 17.

Carotenoid metabolism in plants.

Author information

1
Australian Research Council Centre of Excellence in Plant Energy Biology, The Australian National University, Canberra, ACT 0200, Australia.
2
US Department of Agriculture-Agricultural Research Service, Robert W. Holley Centre for Agriculture and Health, Department of Plant Breeding and Genetics, Cornell University, Ithaca, NY 14853, USA.
3
State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing 2100923, China.
4
Australian Research Council Centre of Excellence in Plant Energy Biology, The Australian National University, Canberra, ACT 0200, Australia. Electronic address: barry.pogson@anu.edu.au.

Abstract

Carotenoids are mostly C40 terpenoids, a class of hydrocarbons that participate in various biological processes in plants, such as photosynthesis, photomorphogenesis, photoprotection, and development. Carotenoids also serve as precursors for two plant hormones and a diverse set of apocarotenoids. They are colorants and critical components of the human diet as antioxidants and provitamin A. In this review, we summarize current knowledge of the genes and enzymes involved in carotenoid metabolism and describe recent progress in understanding the regulatory mechanisms underlying carotenoid accumulation. The importance of the specific location of carotenoid enzyme metabolons and plastid types as well as of carotenoid-derived signals is discussed.

KEYWORDS:

carotenoid biosynthesis; degradation; development; plastids; sequestration; signaling

PMID:
25578273
DOI:
10.1016/j.molp.2014.12.007
[Indexed for MEDLINE]
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