Differential expression of ethylene biosynthesis genes in drupelets and receptacle of raspberry (Rubus idaeus)

Lida Fuentes, Liliam Monsalve, Luis Morales-Quintana, MONIKA VALDENEGRO ESPINOZA, Juan Pablo Martínez, Bruno G. Defilippi, Mauricio González-Agüero

Research output: Contribution to journalArticlepeer-review

12 Scopus citations

Abstract

Red Raspberry (. Rubus idaeus) is traditionally classified as non-climacteric, and the role of ethylene in fruit ripening is not clear. The available information indicates that the receptacle, a modified stem that supports the drupelets, is involved in ethylene production of ripe fruits. In this study, we report receptacle-related ethylene biosynthesis during the ripening of fruits of cv. Heritage. In addition, the expression pattern of ethylene biosynthesis transcripts was evaluated during the ripening process. The major transcript levels of 1-aminocyclopropane-1-carboxylic acid synthase (. RiACS1) and 1-aminocyclopropane-1-carboxylic acid oxidase (. RiACO1) were concomitant with ethylene production, increased total soluble solids (TSS) and decreased titratable acidity (TA) and fruit firmness. Moreover, ethylene biosynthesis and transcript levels of RiACS1 and RiACO1 were higher in the receptacle, sustaining the receptacle's role as a source of ethylene in regulating the ripening of raspberry.

Original languageEnglish
Pages (from-to)100-105
Number of pages6
JournalJournal of Plant Physiology
Volume179
DOIs
StatePublished - 1 May 2015

Keywords

  • Ethylene
  • Raspberry
  • RiACO
  • RiACS

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