A mutant allele of ζ-carotene isomerase (Z-ISO) is associated with the yellow pigmentation of the “Pinalate” sweet orange mutant and reveals new insights into its role in fruit carotenogenesis
[Background] Fruit coloration is one of the main quality parameters of Citrus fruit primarily determined by genetic factors. The fruit of ordinary sweet orange (Citrus sinensis) displays a pleasant orange tint due to accumulation of carotenoids, representing β,β-xanthophylls more than 80% of the total content. ‘Pinalate’ is a spontaneous bud mutant, or somatic mutation, derived from sweet orange ‘Navelate’, characterized by yellow fruits due to elevated proportions of upstream carotenes and reduced β,β-xanthophylls, which suggests a biosynthetic blockage at early steps of the carotenoid pathway.
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| Main Authors: | , , , , , , |
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| Other Authors: | |
| Format: | artículo biblioteca |
| Published: |
BioMed Central
2019-11-04
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| Subjects: | Carotenoids, ζ-Carotene isomerase, Citrus fruit, Mutant, Pigmentation, Ripening, Gene expression, |
| Online Access: | http://hdl.handle.net/10261/194244 http://dx.doi.org/10.13039/501100011033 http://dx.doi.org/10.13039/501100000921 http://dx.doi.org/10.13039/501100003977 http://dx.doi.org/10.13039/501100003329 http://dx.doi.org/10.13039/501100003339 |
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| Summary: | [Background] Fruit coloration is one of the main quality parameters of Citrus fruit primarily determined by genetic factors. The fruit of ordinary sweet orange (Citrus sinensis) displays a pleasant orange tint due to accumulation of carotenoids, representing β,β-xanthophylls more than 80% of the total content. ‘Pinalate’ is a spontaneous bud mutant, or somatic mutation, derived from sweet orange ‘Navelate’, characterized by yellow fruits due to elevated proportions of upstream carotenes and reduced β,β-xanthophylls, which suggests a biosynthetic blockage at early steps of the carotenoid pathway. |
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