mdm-miR828 Participates in the Feedback Loop to Regulate Anthocyanin Accumulation in Apple Peel

Anthocyanins are responsible for the red pigmentation in the peel of apple ( Borkh.) fruit. Relatively few studies have investigated anthocyanins at the posttranscriptional level. MicroRNAs play an important role in plant growth and development by regulating gene expression at the posttranscriptiona...

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Published inFrontiers in plant science Vol. 11; p. 608109
Main Authors Zhang, Bo, Yang, Hui-Juan, Yang, Ya-Zhou, Zhu, Zhen-Zhen, Li, Ya-Nan, Qu, Dong, Zhao, Zheng-Yang
Format Journal Article
LanguageEnglish
Published Switzerland Frontiers Media S.A 02.12.2020
Subjects
anthocyanin
apple
high temperature
mdm-miR828
MdMYB1
Plant Science
MdMYB1
mdm-miR828
apple
anthocyanin
high temperature
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Summary:Anthocyanins are responsible for the red pigmentation in the peel of apple ( Borkh.) fruit. Relatively few studies have investigated anthocyanins at the posttranscriptional level. MicroRNAs play an important role in plant growth and development by regulating gene expression at the posttranscriptional level. In this study, mdm-miR828 showed a relatively low expression level during the rapid fruit coloration period. However, the mdm-miR828 expression level increased in the late fruit coloration stage. Overexpression of mdm-miR828 inhibited anthocyanin synthesis in apple and . Dual-luciferase and yeast one-hybrid assays showed that MdMYB1 is capable of binding to the promoter of mdm-MIR828b to promote its expression. The results indicate that mdm-miR828 is involved in a feedback regulatory mechanism associated with anthocyanin accumulation in apple. In addition, mdm-miR828 is involved in the inhibition of anthocyanin accumulation in response to high temperature.
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This article was submitted to Plant Metabolism and Chemodiversity, a section of the journal Frontiers in Plant Science
These authors have contributed equally to this work
Reviewed by: Nick Albert, The New Zealand Institute for Plant and Food Research Ltd., New Zealand; Antje Feller, University of Tübingen, Germany
Edited by: Cristina Garcia-Viguera, Consejo Superior de Investigaciones Científicas (CSIC), Spain
ISSN:1664-462X
1664-462X
DOI:10.3389/fpls.2020.608109