Interaction of two MADS-box genes leads to growth phenotype divergence of all-flesh type of tomatoes

Baowen Huang, Guojian Hu, Keke Wang, Pierre Frasse, Elie Maza, Anis Djari, Wei Deng, Julien Pirrello, Vincent Burlat, Clara Pons, Antonio Granell, Zhengguo Li (), Benoît Rest () and Mondher Bouzayen ()
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Baowen Huang: Université de Toulouse, INRAe/INP Toulouse, UMR990 Génomique et Biotechnologie des Fruits, Avenue de l’Agrobiopole
Guojian Hu: Université de Toulouse, INRAe/INP Toulouse, UMR990 Génomique et Biotechnologie des Fruits, Avenue de l’Agrobiopole
Keke Wang: Université de Toulouse, INRAe/INP Toulouse, UMR990 Génomique et Biotechnologie des Fruits, Avenue de l’Agrobiopole
Pierre Frasse: Université de Toulouse, INRAe/INP Toulouse, UMR990 Génomique et Biotechnologie des Fruits, Avenue de l’Agrobiopole
Elie Maza: Université de Toulouse, INRAe/INP Toulouse, UMR990 Génomique et Biotechnologie des Fruits, Avenue de l’Agrobiopole
Anis Djari: Université de Toulouse, INRAe/INP Toulouse, UMR990 Génomique et Biotechnologie des Fruits, Avenue de l’Agrobiopole
Wei Deng: Chongqing University
Julien Pirrello: Université de Toulouse, INRAe/INP Toulouse, UMR990 Génomique et Biotechnologie des Fruits, Avenue de l’Agrobiopole
Vincent Burlat: Université de Toulouse, CNRS, UPS
Clara Pons: Consejo Superior de Investigaciones Cientificas- Universidad Politécnica de Valencia
Antonio Granell: Consejo Superior de Investigaciones Cientificas- Universidad Politécnica de Valencia
Zhengguo Li: Chongqing University
Benoît Rest: Université de Toulouse, INRAe/INP Toulouse, UMR990 Génomique et Biotechnologie des Fruits, Avenue de l’Agrobiopole
Mondher Bouzayen: Université de Toulouse, INRAe/INP Toulouse, UMR990 Génomique et Biotechnologie des Fruits, Avenue de l’Agrobiopole

Nature Communications, 2021, vol. 12, issue 1, 1-14

Abstract: Abstract All-flesh tomato cultivars are devoid of locular gel and exhibit enhanced firmness and improved postharvest storage. Here, we show that SlMBP3 is a master regulator of locular tissue in tomato fruit and that a deletion at the gene locus underpins the All-flesh trait. Intriguingly, All-flesh varieties lack the deleterious phenotypes reported previously for SlMBP3 under-expressing lines and which preclude any potential commercial use. We resolve the causal factor for this phenotypic divergence through the discovery of a natural mutation at the SlAGL11 locus, a close homolog of SlMBP3. Misexpressing SlMBP3 impairs locular gel formation through massive transcriptomic reprogramming at initial phases of fruit development. SlMBP3 influences locule gel formation by controlling cell cycle and cell expansion genes, indicating that important components of fruit softening are determined at early pre-ripening stages. Our findings define potential breeding targets for improved texture in tomato and possibly other fleshy fruits.

Date: 2021
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Persistent link: https://EconPapers.repec.org/RePEc:nat:natcom:v:12:y:2021:i:1:d:10.1038_s41467-021-27117-7

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DOI: 10.1038/s41467-021-27117-7

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