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  Reduced auxin signalling through the cyclophilin DIAGEOTROPICA impacts tomato fruit development and metabolism during ripening

Batista-Silva, W., de Oliveira, Carvalho, A., Oliveira Martins, A., Siqueira, J. A., Rodrigues-Salvador, A., et al. (2022). Reduced auxin signalling through the cyclophilin DIAGEOTROPICA impacts tomato fruit development and metabolism during ripening. Journal of Experimental Botany, 73(12), 4113-4128. doi:10.1093/jxb/erac143.

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Batista-Silva, Willian1, Author
de Oliveira1, Author
Carvalho, Alice1, Author
Oliveira Martins, Auxiliadora1, Author
Siqueira, João Antonio1, Author
Rodrigues-Salvador, Acácio1, Author
Omena-Garcia, Rebeca P1, Author
Medeiros, D.B.2, Author           
Peres, Lázaro Eustáquio Pereira1, Author
Ribeiro, Dimas Mendes1, Author
Zsögön, Agustín1, Author
Fernie, A. R.2, Author           
Nunes-Nesi, Adriano1, Author
Araújo, Wagner L1, Author
Affiliations:
1external, ou_persistent22              
2Central Metabolism, Department Willmitzer, Max Planck Institute of Molecular Plant Physiology, Max Planck Society, ou_1753339              

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 Abstract: Auxin is an important hormone playing crucial roles during fruit growth and ripening, however, the metabolic impact of changes in auxin signalling during tomato (Solanum lycopersicum L.) ripening remains unclear. Here, we investigated the significance of changes in auxin signalling during different stages of fruit development by analysing changes in tomato fruit quality and primary metabolism using mutants with either lower or higher auxin sensitivity [diageotropica (dgt) and entire mutants, respectively]. Altered auxin sensitivity modifies metabolism, through direct impacts on fruit respiration and fruit growth. We verified that the dgt mutant plants exhibit reductions in fruit set, total fruit dry weight, fruit size, number of seeds per fruit, and fresh weight loss during post-harvest. Sugar accumulation was associated with delayed fruit ripening in dgt, likely connected with reduced ethylene levels and respiration, coupled with a lower rate of starch degradation. By contrast, despite exhibiting parthenocarpy, increased auxin perception (entire) did not alter fruit ripening, leading to only minor changes in primary metabolism. By performing a comprehensive analysis our results connect auxin signalling and metabolic changes during tomato fruit development, indicating that reduced auxin signalling led to extensive changes in sugar content and starch metabolism during tomato fruit ripening.

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Language(s): eng - English
 Dates: 2022-04-062022-06-22
 Publication Status: Published in print
 Pages: -
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 Rev. Type: -
 Identifiers: DOI: 10.1093/jxb/erac143
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Title: Journal of Experimental Botany
  Other : J. Exp. Bot
Source Genre: Journal
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Publ. Info: Oxford : Oxford University Press [etc.]
Pages: - Volume / Issue: 73 (12) Sequence Number: - Start / End Page: 4113 - 4128 Identifier: ISSN: 0022-0957
CoNE: https://pure.mpg.de/cone/journals/resource/954925413883