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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 and Technology. 161:111068
- Publication Year :
- 2020
- Publisher :
- Elsevier BV, 2020.
-
Abstract
- 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.
- Subjects :
- 0106 biological sciences
Basic helix-loop-helix
Cell
food and beverages
Promoter
Ripening
04 agricultural and veterinary sciences
Horticulture
Transcript level
Biology
01 natural sciences
040501 horticulture
Cell biology
Cell wall
medicine.anatomical_structure
medicine
0405 other agricultural sciences
Agronomy and Crop Science
Gene
Transcription factor
010606 plant biology & botany
Food Science
Subjects
Details
- ISSN :
- 09255214
- Volume :
- 161
- Database :
- OpenAIRE
- Journal :
- Postharvest Biology and Technology
- Accession number :
- edsair.doi...........b8e40d5e1b221acc55e16cbe644b1b1d