The quest for golden bananas: Investigating carotenoid regulation in a Fe’i group Musa cultivar

Buah, Stephen, Mlalazi, Bulukani, Khanna, Harjeet, Dale, James L., & Mortimer, Cara L. (2016) The quest for golden bananas: Investigating carotenoid regulation in a Fe’i group Musa cultivar. Journal of Agricultural and Food Chemistry, 64(16), pp. 3176-3185.

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Abstract

The regulation of carotenoid biosynthesis in a high-carotenoid-accumulating Fe’i group Musa cultivar, “Asupina”, has been examined and compared to that of a low-carotenoid-accumulating cultivar, “Cavendish”, to understand the molecular basis underlying carotenogenesis during banana fruit development. Comparisons in the accumulation of carotenoid species, expression of isoprenoid genes, and product sequestration are reported. Key differences between the cultivars include greater carotenoid cleavage dioxygenase 4 (CCD4) expression in “Cavendish” and the conversion of amyloplasts to chromoplasts during fruit ripening in “Asupina”. Chromoplast development coincided with a reduction in dry matter content and fruit firmness. Chromoplasts were not observed in “Cavendish” fruits. Such information should provide important insights for future developments in the biofortification and breeding of banana.

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ID Code: 95012
Item Type: Journal Article
Refereed: Yes
Keywords: Musa; secondary metabolism; carotenoids; banana; fruit development; pro-vitamin A; biofortification
DOI: 10.1021/acs.jafc.5b05740
ISSN: 1520-5118
Divisions: Current > Research Centres > Centre for Tropical Crops and Biocommodities
Current > Institutes > Institute for Future Environments
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Copyright Owner: Copyright 2016 American Chemical Society
Deposited On: 20 Apr 2016 02:41
Last Modified: 06 Jul 2016 09:40

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