Knock-Out of CmNAC-NOR Affects Melon Climacteric Fruit Ripening
Visualitza/Obre
Autor/a
Liu, Bin
Santo Domingo, Miguel
Mayobre, Carlos
Martín-Hernández, Ana Montserrat
Pujol, Marta
Data de publicació
2022-06-10ISSN
1664-462X
Resum
Fruit ripening is an important process that affects fruit quality. A QTL in melon, ETHQV6.3, involved in climacteric ripening regulation, has been found to be encoded by CmNAC-NOR, a homologue of the tomato NOR gene. To further investigate CmNAC-NOR function, we obtained two CRISPR/Cas9-mediated mutants (nor-3 and nor-1) in the climacteric Védrantais background. nor-3, containing a 3-bp deletion altering the NAC domain A, resulted in ~8 days delay in ripening without affecting fruit quality. In contrast, the 1-bp deletion in nor-1 resulted in a fully disrupted NAC domain, which completely blocked climacteric ripening. The nor-1 fruits did not produce ethylene, no abscission layer was formed and there was no external color change. Additionally, volatile components were dramatically altered, seeds were not well developed and flesh firmness was also altered. There was a delay in fruit ripening with the nor-1 allele in heterozygosis of ~20 days. Our results provide new information regarding the function of CmNAC-NOR in melon fruit ripening, suggesting that it is a potential target for modulating shelf life in commercial climacteric melon varieties.
Tipus de document
Article
Versió del document
Versió publicada
Llengua
English
Matèries (CDU)
633 - Cultius i produccions
Pàgines
11
Publicat per
Frontiers Media
Publicat a
Frontiers in Plant Science
Citació
Liu, Bin, Miguel Santo Domingo, Carlos Mayobre, Ana Montserrat Martín-Hernández, Marta Pujol, and Jordi Garcia-Mas. 2022. "Knock-Out Of Cmnac-NOR Affects Melon Climacteric Fruit Ripening". Frontiers In Plant Science. doi:10.3389/fpls.2022.878037.
Número de l'acord de la subvenció
MINECO/Programa Estatal de fomento de la investigación científica y técnica de excelencia/SEV-2015-0533/ES/ /
MINECO/Programa Estatal de I+D+I orientada a los retos de la sociedad/AGL2015-64625-C2-1-R/ES/DISECCION GENETICA DE DOS CARACTERES DE INTERES AGRONOMICO EN MELON: RESISTENCIA A CUCUMBER MOSAIC VIRUS Y MADURACION CLIMATERICA DE FRUTO/RESMELORIP
MICIU-FEDER/Programa Estatal de I+D+I orientada a los retos de la sociedad/RTI2018-097665-B-C2/ES/APROXIMACIONES DE VARIABILIDAD NATURAL Y EDICIÓN GENÉTICA PARA EL ESTUDIO DE LA CALIDAD DE FRUTO Y LA RESISTENCIA A ENFERMEDADES EN MELÓN/
Programa
Genòmica i Biotecnologia
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