Arabidopsis thaliana plants over-expressing the lbMADS10 gene from sweetpotato accumulates high level of anthocyanin

Issue Date

8-2011

Abstract

The function of the lbMADS10 cloned from sweetpotato [lpomoea batatas (L.) Lam.] cv. Beniazuma, was analyzed by introducing the gene into Arabidopsis thaliana. The lbMADS10 gene was found to have a high amino acid sequence homology with the members of the MADS-box family of transcription factors particularly with DEFH28 of Antirrhinum majus (64%) and BpMADS4 of Betula pendula (61%) of the SQUA subfamily. The transformed Arabidopsis plants over-expressing the lbMADS10 gene showed high accumulation of the anthocyanin pigments, which was enhanced by the addition of sucrose in the medium. The role of lbMADS10 gene in the control of the anthocyanin pigments in sweetpotato was elucidated, which was similar to the function of the transparent testa (tt) genes of Arabidopsis thaliana. The expression of the transformed Arabidopsis plants enforce the speculation that the cloned lbMADS10 gene is required for the development of anthocyanin pigmentation on specific tissues of the sweetpotato plant.

Source or Periodical Title

Philippine Journal of Crop Science

ISSN

0115-463x

Volume

36

Issue

2

Page

30-36

Document Type

Article

Frequency

tri-quarterly

Physical Description

graphs

Language

English

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