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Title of Journal: Mol Breeding

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Abbravation: Molecular Breeding

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Springer Netherlands

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DOI

10.1016/j.berh.2004.02.005

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ISSN

1572-9788

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Genetically engineered anthocyanin pathway for hig

Authors: Yanjie Zhang Guihua Chu Zongli Hu Qiong Gao Baolu Cui Shibing Tian Bo Wang Guoping Chen
Publish Date: 2016/04/21
Volume: 36, Issue: 5, Pages: 54-
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Abstract

Anthocyanins natural pigments with high antioxidant activities are widely distributed in the plant kingdom and play important roles in various physiological processes Much effort has been committed to enhancing the anthocyanin content of these healthpromoting pigments in vegetables and grains for their eyecatching colors and special nutrients Previously we reported that the SmMYB1 gene encoding a R2R3 MYB transcription factor participated in the regulation of anthocyanin biosynthesis in the peel of eggplant In this work we introduced SmMYB1 into a nonanthocyaninaccumulating eggplant cultivar Solanum aethiopicum group Gilo via Agrobacteriummediated transformation Genetically engineered plants exhibited high concentrations of anthocyanin in leaves petals stamens and fruit peels under normal growth conditions especially in fruit flesh Furthermore highly methylated anthocyanins malvidin 3pcoumaroylrhamnosideglucoside5glucoside and malvidin 3feruloylrhamnosideglucoside5glucoside were separated from the purple fruit flesh and identified by HPLC–ESI–MS/MS qRTPCR analysis revealed that most anthocyanin structural genes were dramatically upregulated in the tissues of transgenic lines compared with nontransformed plants In addition the transgenic seedlings had greater tolerance to freezing stress and better recovery under rewarming conditions These results provide a good foundation for the breeding of new eggplant cultivars with more healthy agronomic traits in future studies

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