Unravelling the molecular regulation mechanisms of slow ripening trait in prunus persica

Gerardo Núñez-Lillo, Lissette Ulloa-Zepeda, Catalina Pavez, Anibal Riveros, Francisca Blanco-Herrera, Reinaldo Campos-Vargas, Romina Pedreschi, Claudio Meneses

Research output: Contribution to journalArticlepeer-review

Abstract

Fruit development is a complex process that involves the interplay of cell division, expan-sion, and differentiation. As a model to study fruit development, nectarines incapable of ripening were described as slow ripening. Slow ripening fruits remained firm and exhibited no rise in CO2 or ethylene production rates for one month or more at 20 C. Different studies suggest that this trait is controlled by a single gene (NAC072). Transcriptome analysis between normal and slow ripening fruits showed a total of 157, 269, 976, and 5.224 differentially expressed genes in each fruit developmental stage analyzed (T1, T2, T3, and T7, respectively), and no expression of NAC072 was found in the slow ripening individuals. Using this transcriptomic information, we identified a correlation of NAC072 with auxin-related genes and two genes associated with terpene biosynthesis. On the other hand, significant differences were observed in hormonal biosynthetic pathways during fruit development between the normal and slow ripening individuals (gibberellin, ethylene, jasmonic acid and abscisic acid). These results suggest that the absence of NAC072 by the direct or indirect expression or control of auxins or terpene-related genes prevents normal peach fruit development.

Original languageEnglish
Article number2380
JournalPlants
Volume10
Issue number11
DOIs
Publication statusPublished - Nov 2021

Keywords

  • Abscisic acid
  • Auxins
  • Ethylene
  • Gibberellins
  • Jasmonic acid
  • NAC072
  • Slow ripening

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics
  • Ecology
  • Plant Science

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