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Article

Regulation of Fruit Growth in a Peach Slow Ripening Phenotype

1
Department of Agronomy, Food, Natural Resources, Animals and Environment (DAFNAE), University of Padova, Agripolis-Viale dell’Università 16, 35020 Legnaro, Italy
2
Institute for Sustainable Plant Protection (IPSP)—CNR, Agripolis-Viale dell’Università 16, 35020 Legnaro, Italy
3
Dipartimento di Scienze e Tecnologie Agro-Alimentari (DISTAL), University of Bologna, Viale Fanin 44, 40127 Bologna, Italy
4
Department of Biodiversity & Molecular Ecology, Research and Innovation Centre, Fondazione Edmund Mach, Via E. Mach 1, 38010 San Michele all’Adige, Italy
*
Author to whom correspondence should be addressed.
Academic Editor: Maria-Carmen Gomez-Jimenez
Genes 2021, 12(4), 482; https://doi.org/10.3390/genes12040482
Received: 23 February 2021 / Revised: 15 March 2021 / Accepted: 24 March 2021 / Published: 26 March 2021
(This article belongs to the Special Issue Genetic Basis and Physiology of Fruit Ripening and Abscission)
Consumers’ choices are mainly based on fruit external characteristics such as the final size, weight, and shape. The majority of edible fruit are by tree fruit species, among which peach is the genomic and genetic reference for Prunus. In this research, we used a peach with a slow ripening (SR) phenotype, identified in the Fantasia (FAN) nectarine, associated with misregulation of genes involved in mesocarp identity and showing a reduction of final fruit size. By investigating the ploidy level, we observed a progressive increase in endoreduplication in mesocarp, which occurred in the late phases of FAN fruit development, but not in SR fruit. During fruit growth, we also detected that genes involved in endoreduplication were differentially modulated in FAN compared to SR. The differential transcriptional outputs were consistent with different chromatin states at loci of endoreduplication genes. The impaired expression of genes controlling cell cycle and endocycle as well as those claimed to play a role in fruit tissue identity result in the small final size of SR fruit. View Full-Text
Keywords: cell division; chromatin states; drupe; endoreduplication; fruit size; mesocarp gene identity; Prunus cell division; chromatin states; drupe; endoreduplication; fruit size; mesocarp gene identity; Prunus
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MDPI and ACS Style

Farinati, S.; Forestan, C.; Canton, M.; Galla, G.; Bonghi, C.; Varotto, S. Regulation of Fruit Growth in a Peach Slow Ripening Phenotype. Genes 2021, 12, 482. https://doi.org/10.3390/genes12040482

AMA Style

Farinati S, Forestan C, Canton M, Galla G, Bonghi C, Varotto S. Regulation of Fruit Growth in a Peach Slow Ripening Phenotype. Genes. 2021; 12(4):482. https://doi.org/10.3390/genes12040482

Chicago/Turabian Style

Farinati, Silvia, Cristian Forestan, Monica Canton, Giulio Galla, Claudio Bonghi, and Serena Varotto. 2021. "Regulation of Fruit Growth in a Peach Slow Ripening Phenotype" Genes 12, no. 4: 482. https://doi.org/10.3390/genes12040482

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