Journal
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
Volume 63, Issue 36, Pages 7995-8007Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.jafc.5b02742
Keywords
ethylene; fruit shelf life; Sletr1-1; Sletr1-2; tomato
Funding
- Ministry of Education, Science, Sports, and Technology of Japan [25252008]
- Grants-in-Aid for Scientific Research [25252008] Funding Source: KAKEN
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Mutations in the ethylene receptor gene (SlETR1), Sletr1-1 and Sletr1-2, are effective in reducing ethylene sensitivity and improving fruit shelf life. In this study the effect of Sletrl-1 and Sletr1-2 mutations was investigated in F1 hybrid lines. These two mutants and control were crossed with four commercial pure-line tomatoes. The Sletrl-1 mutation showed undesirable pleiotropic effects in the F1 hybrid lines. The Sletr1-2 mutation was effective in improving fruit shelf life of F1 hybrid lines for 4-5 days longer. It was also effective in improving fruit firmness without change in fruit size, ethylene production, respiration rate, and total soluble solids or a great reduction in fruit color, lycopene, and beta-carotene, although the titratable acidity was increased by Sletr1-2 mutation. These results indicate that the Sletr1-2 mutant allele has the potential to improve fruit shelf life via incorporation in tomato breeding programs.
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