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The basic helix-loop-helix transcription factor MabHLH7 positively regulates cell wall-modifying-related genes during banana fruit ripening.
- Source :
-
Postharvest Biology & Technology . Mar2020, Vol. 161, pN.PAG-N.PAG. 1p. - Publication Year :
- 2020
-
Abstract
- • MabHLH7 was ethylene-inducible and nuclear-localized, and its transcript level was increased during banana fruit ripening. • MabHLH7 can directly bind to and activate the promoters of several cell wall-modifying-related genes. • Our findings establish a transcriptional regulatory network during banana fruit ripening. The basic helix-loop-helix (bHLH) family proteins, a group of functionally diverse transcription factors (TFs), control a series of plant biological processes. However, the involvement of bHLH TFs in fruit ripening still rarely reported. In this study, a banana fruit bHLH TF, named as MabHLH7, was identified and characterized. MabHLH7 was ethylene-inducible and nuclear-localized, and its transcript level was increased during banana fruit ripening. More importantly, MabHLH7 can directly bind to and activate the promoters of several cell wall-modifying-related genes, including MaXTH12 , MaEXP2/21 , MaPME4/5 , MaPG4, and MaPL1/2, which were significantly enhanced in the ripening stage. Overall, our findings establish a transcriptional regulatory network during banana fruit ripening, in which MabHLH7 activates a small subset of cell wall-modifying-related genes through directly binding to their promoters. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 09255214
- Volume :
- 161
- Database :
- Academic Search Index
- Journal :
- Postharvest Biology & Technology
- Publication Type :
- Academic Journal
- Accession number :
- 140849291
- Full Text :
- https://doi.org/10.1016/j.postharvbio.2019.111068