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The effects of fruit bagging on levels of phenolic compounds and expression by anthocyanin biosynthetic and regulatory genes in red-fleshed apples

Paper ID Volume ID Publish Year Pages File Format Full-Text
34276 45016 2015 9 PDF Available
Title
The effects of fruit bagging on levels of phenolic compounds and expression by anthocyanin biosynthetic and regulatory genes in red-fleshed apples
Abstract

•The bagging effect on red-fleshed apples was evaluated for the first time.•The accumulation of anthocyanin in apple flesh is sensitive to light.•The molecular mechanism for red pigmentation in apple flesh was analyzed.

Apples with red fruit flesh are desirable for breeding because they contain more health-beneficial compounds. That color trait is also considered more attractive to consumer. To obtain experimental evidence about the molecular mechanism for this pigmentation, we investigated how the practice of bagging fruit might affect levels of phenolic compounds as well as the expression of anthocyanin biosynthetic and regulatory genes. Two red-fleshed varieties from Xinjiang, P.R. China, were studied – ‘Xiahongrou’ and ‘No.1 Hongxun’. HPLC analysis showed that the contents of anthocyanins in both peel and flesh were decreased by bagging, but were increased again when fruits were re-exposed to sunlight. Except for F3H in ‘No.1 Hongxun’, transcription levels for most anthocyanin biosynthetic genes in the flesh were enhanced after bag removal. MYB10 is a key transcriptional factor in the anthocyanin pathway of these two apple varieties, particularly in the flesh. These results suggest that the development of red coloring when bags are removed could be a result of light-induced coordinated expression by MYB10 and anthocyanin biosynthetic genes in red-fleshed apples.

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Keywords
Red-fleshed apples; Phenolics; Anthocyanins; Bagging treatment; Gene expression
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The effects of fruit bagging on levels of phenolic compounds and expression by anthocyanin biosynthetic and regulatory genes in red-fleshed apples
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Publisher
Database: Elsevier - ScienceDirect
Journal: Process Biochemistry - Volume 50, Issue 11, November 2015, Pages 1774–1782
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us