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Induced mutations in SlE8 and SlACO1 control tomato fruit maturation and shelf-life

Journal of experimental botany, 2021-10, Vol.72 (20), p.6920-6932 [Peer Reviewed Journal]

The Author(s) 2021. Published by Oxford University Press on behalf of the Society for Experimental Biology. All rights reserved. For permissions, please email: journals.permissions@oup.com 2021 ;Distributed under a Creative Commons Attribution 4.0 International License ;ISSN: 0022-0957 ;EISSN: 1460-2431 ;DOI: 10.1093/jxb/erab330 ;PMID: 34369570

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  • Title:
    Induced mutations in SlE8 and SlACO1 control tomato fruit maturation and shelf-life
  • Author: Brisou, Gwilherm ; Piquerez, Sophie J M ; Minoia, Silvia ; Marcel, Fabien ; Cornille, Amandine ; Carriero, Filomena ; Boualem, Adnane ; Bendahmane, Abdelhafid
  • Vicente, Ariel
  • Subjects: Environmental Sciences
  • Is Part Of: Journal of experimental botany, 2021-10, Vol.72 (20), p.6920-6932
  • Description: Fruit softening is a critical trait controlling fruit shelf-life. We analysed the expression of ethylene-forming genes, selected candidates for mutation analysis, and identified mutant plants with improved shelf-life. Abstract Fruit maturation and softening are critical traits that control fruit shelf-life. In the climacteric tomato (Solanum lycopersicum L.) fruit, ethylene plays a key role in fruit ripening and softening. We characterized two related proteins with contrasting impact on ethylene production, ACC oxidase 1 (SlACO1) and SlE8. We found SlACO1 and SlE8 to be highly expressed during fruit ripening. To identify loss-of-function alleles, we analysed the tomato genetic diversity but we did not find any natural mutations impairing the function of these proteins. We also found the two loci evolving under purifying selection. To engineer hypomorphic alleles, we used TILLING (target-induced local lesions in genomes) to screen a tomato ethylmethane sulfonate-mutagenized population. We found 13 mutants that we phenotyped for ethylene production, shelf-life, firmness, conductivity, and soluble solid content in tomato fruits. The data demonstrated that slaco1-1 and slaco1-2 alleles could be used to improve fruit shelf-life, and that sle8-1 and sle8-2 alleles could be used to accelerate ripening. This study highlights further the importance of SlACO1 and SlE8 in ethylene production in tomato fruit and how they might be used for post-harvest fruit preservation or speeding up fruit maturation.
  • Publisher: UK: Oxford University Press
  • Language: English
  • Identifier: ISSN: 0022-0957
    EISSN: 1460-2431
    DOI: 10.1093/jxb/erab330
    PMID: 34369570
  • Source: Geneva Foundation Free Medical Journals at publisher websites
    Alma/SFX Local Collection
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