Feb, 2014
Tomato FRUITFULL homologs regulate fruit ripening via ethylene biosynthesis
BIOSCIENCE BIOTECHNOLOGY AND BIOCHEMISTRY
- Volume
- 78
- Number
- 2
- First page
- 231
- Last page
- 237
- Language
- English
- Publishing type
- Research paper (scientific journal)
- DOI
- 10.1080/09168451.2014.878221
- Publisher
- TAYLOR & FRANCIS LTD
Certain MADS-box transcription factors play central roles in regulating fruit ripening. RIPENING INHIBITOR (RIN), a tomato MADS-domain protein, acts as a global regulator of ripening, affecting the climacteric rise of ethylene, pigmentation changes, and fruit softening. Previously, we showed that two MADS-domain proteins, the FRUITFULL homologs FUL1 and FUL2, form complexes with RIN. Here, we characterized the FUL1/FUL2 loss-of-function phenotype in co-suppressed plants. The transgenic plants produced ripening-defective fruits accumulating little or no lycopene. Unlike a previous study on FUL1/FUL2 suppressed tomatoes, our transgenic fruits showed very low levels of ethylene production, and this was associated with suppression of the genes for 1-aminocyclopropane-1-carboxylic acid synthase, a rate-limiting enzyme in ethylene synthesis. FUL1/FUL2 suppression also caused the fruit to soften in a manner independent of ripening, possibly due to reduced cuticle thickness in the peel of the suppressed tomatoes.
- Link information
- ID information
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- DOI : 10.1080/09168451.2014.878221
- ISSN : 0916-8451
- eISSN : 1347-6947
- Pubmed ID : 25036675
- Web of Science ID : WOS:000337573300007