Fruits result from complex biological processes that begin soon after fertilization. Among these processes are cell division and expansion, accumulation of secondary metabolites and increase in carbohydrate biosynthesis. Later fruit ripening is accomplished by chlorophyll degradation and cell wall lysis. Fruit maturation is an essential step to optimise seed dispersal, and is controlled by a complex network of transcription factors and genetic regulators that are strongly influenced by phytohormones. Abscisic acid (ABA) and ethylene are the major regulators of ripening and senescence both in dry and fleshy fruits, as demonstrated by numerous ripening defective mutants, effects of exogenous hormone application and transcriptome analyses. While ethylene is the best characterised player in the final step of a fruit's life, ABA also has a key regulatory role, promoting ethylene production and acting as a stress-related hormone in response to drought and pathogen attack. In this review, we illustrate and clarify the role of ABA and ethylene in relation to the interconnected biotic and abiotic phenomena that affect ripening and senescence. We integrate and discuss the most recent data available regarding these biological processes, which are crucial for post-harvest fruit conservation and for food safety.

Fruit ripening: the role of hormones, cell wall modifications and their intersection with pathogens / S. Forlani, S. Masiero, C. Mizzotti. - In: JOURNAL OF EXPERIMENTAL BOTANY. - ISSN 0022-0957. - 70:11(2019 May 15), pp. 2993-3006. [10.1093/jxb/erz112]

Fruit ripening: the role of hormones, cell wall modifications and their intersection with pathogens

S. Forlani
Primo
;
S. Masiero
Secondo
;
C. Mizzotti
Ultimo
2019

Abstract

Fruits result from complex biological processes that begin soon after fertilization. Among these processes are cell division and expansion, accumulation of secondary metabolites and increase in carbohydrate biosynthesis. Later fruit ripening is accomplished by chlorophyll degradation and cell wall lysis. Fruit maturation is an essential step to optimise seed dispersal, and is controlled by a complex network of transcription factors and genetic regulators that are strongly influenced by phytohormones. Abscisic acid (ABA) and ethylene are the major regulators of ripening and senescence both in dry and fleshy fruits, as demonstrated by numerous ripening defective mutants, effects of exogenous hormone application and transcriptome analyses. While ethylene is the best characterised player in the final step of a fruit's life, ABA also has a key regulatory role, promoting ethylene production and acting as a stress-related hormone in response to drought and pathogen attack. In this review, we illustrate and clarify the role of ABA and ethylene in relation to the interconnected biotic and abiotic phenomena that affect ripening and senescence. We integrate and discuss the most recent data available regarding these biological processes, which are crucial for post-harvest fruit conservation and for food safety.
ripening; senescence; hormones; pathogens; cell wall; dry fruit; fleshy fruit; climacteric fruit; non-climacteric fruit
Settore BIO/01 - Botanica Generale
Settore BIO/04 - Fisiologia Vegetale
   Investigating Self Incompatibility DEterminants in fruit trees (ISIDE)
   MINISTERO DELL'ISTRUZIONE E DEL MERITO
   2015BPM9H3_005
15-mag-2019
11-mar-2019
Article (author)
File in questo prodotto:
File Dimensione Formato  
erz112.pdf

accesso riservato

Tipologia: Publisher's version/PDF
Dimensione 519.37 kB
Formato Adobe PDF
519.37 kB Adobe PDF   Visualizza/Apri   Richiedi una copia
Pubblicazioni consigliate

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2434/633382
Citazioni
  • ???jsp.display-item.citation.pmc??? 40
  • Scopus 109
  • ???jsp.display-item.citation.isi??? 93
social impact