Effect of Paper-Bagging on Apple Skin Patterning Associated with MdMYB10 Promoter Methylation

Paper-bagging is an efficient method to maximize apple skin color, but a relationship between this technique and fruit skin patterning has not been demonstrated. Here, the 'Fuji' fruit with red-striped skin changed to red-blushed skin under re-exposure to light after bag treatment. Higher...

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Bibliographic Details
Published in:International journal of molecular sciences 2022-03, Vol.23 (6), p.3319
Main Authors: Cho, Hye Jeong, Han, A Reum, Choi, Cheol
Format: Article
Language:English
Subjects:
Anthocyanins
Anthocyanins - metabolism
Apples
Bagging
Biosynthesis
Color
Cultivars
Demethylation
DNA Methylation
Enzymes
Epigenetics
Flavonoids
Fruit - genetics
Fruit - metabolism
Fruits
Gene expression
Gene Expression Regulation, Plant
Malus - genetics
Malus - metabolism
Methylation
Pigmentation
Plant Proteins - genetics
Plant Proteins - metabolism
Skin
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Summary:Paper-bagging is an efficient method to maximize apple skin color, but a relationship between this technique and fruit skin patterning has not been demonstrated. Here, the 'Fuji' fruit with red-striped skin changed to red-blushed skin under re-exposure to light after bag treatment. Higher expression of , a transcription factor that regulates anthocyanin biosynthesis in apples, correlated with increased anthocyanin concentration in bag removal fruit. At the mature stage, a comparison of methylation status in the promoter revealed that the methylation level in the region from -2585 to -2117 bp was reduced in bag removal fruit, especially for CHG context. It can be regulated by the downregulated expression of DNA methyltransferases such as , , and . Our results suggest that the bag removal treatment in this cultivar causes a change in skin patterning from striped to blushed pigmentation by inducing DNA demethylation of .
ISSN:1422-0067
1661-6596
1422-0067
DOI:10.3390/ijms23063319