Metabolic changes in pomegranate fruit skin following cold storage promote chilling injury of the peel

Abstract Pomegranate cv. ‘Wonderful’ fruit are susceptible to chilling injuries of the peel (CIp) when stored at 7 °C in modified-atmosphere bags for more than 3 months. The damage, manifested as superficial browning, is restricted to the fruit skin, i.e., the outer colored layer of the peel. To cha...

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Autores principales:	Ravi Singh Baghel, Alexandra Keren-Keiserman, Idit Ginzberg
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/eaeb55fca3294376b2c4dd81b590a97d
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spelling	oai:doaj.org-article:eaeb55fca3294376b2c4dd81b590a97d2021-12-02T16:55:46ZMetabolic changes in pomegranate fruit skin following cold storage promote chilling injury of the peel10.1038/s41598-021-88457-42045-2322https://doaj.org/article/eaeb55fca3294376b2c4dd81b590a97d2021-04-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-88457-4https://doaj.org/toc/2045-2322Abstract Pomegranate cv. ‘Wonderful’ fruit are susceptible to chilling injuries of the peel (CIp) when stored at 7 °C in modified-atmosphere bags for more than 3 months. The damage, manifested as superficial browning, is restricted to the fruit skin, i.e., the outer colored layer of the peel. To characterize possible causes of CIp development, fruit were collected at early harvest—when the premature fruit are poorly colored and susceptible to CIp development, and at late harvest—when mature fruit have fully red skin and less susceptibility to CIp. Skin samples were collected on day of harvest and at different time points during storage. Anatomical study of skin with CIp disorder showed a broken cuticle layer with underlying degenerated cells. A high total phenol content, which is associated with high antioxidant capacity, was not sufficient to prevent the development of CIp in the premature fruit. The concentration of punicalagin was the same for premature and mature skin at harvest and during storage, and therefore not associated with CIp development in the premature fruit skin. Furthermore, the expression of antioxidant-related genes CAT2, SOD and GR2 was similar for both premature and mature fruit skin. Poor pigmentation of the premature fruit skin and chilling-induced downregulation of key anthocyanin-biosynthesis genes were associated with CIp development. High total phenol concentration combined with high expression of the gene encoding PPO was also associated with CIp; however, high expression ratio of PAL to PPO was found in mature skin, and may be associated with reduced CIp disorder. The results presented suggest future possibilities for controlling the CIp phenomenon.Ravi Singh BaghelAlexandra Keren-KeisermanIdit GinzbergNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-13 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Ravi Singh Baghel Alexandra Keren-Keiserman Idit Ginzberg Metabolic changes in pomegranate fruit skin following cold storage promote chilling injury of the peel
description	Abstract Pomegranate cv. ‘Wonderful’ fruit are susceptible to chilling injuries of the peel (CIp) when stored at 7 °C in modified-atmosphere bags for more than 3 months. The damage, manifested as superficial browning, is restricted to the fruit skin, i.e., the outer colored layer of the peel. To characterize possible causes of CIp development, fruit were collected at early harvest—when the premature fruit are poorly colored and susceptible to CIp development, and at late harvest—when mature fruit have fully red skin and less susceptibility to CIp. Skin samples were collected on day of harvest and at different time points during storage. Anatomical study of skin with CIp disorder showed a broken cuticle layer with underlying degenerated cells. A high total phenol content, which is associated with high antioxidant capacity, was not sufficient to prevent the development of CIp in the premature fruit. The concentration of punicalagin was the same for premature and mature skin at harvest and during storage, and therefore not associated with CIp development in the premature fruit skin. Furthermore, the expression of antioxidant-related genes CAT2, SOD and GR2 was similar for both premature and mature fruit skin. Poor pigmentation of the premature fruit skin and chilling-induced downregulation of key anthocyanin-biosynthesis genes were associated with CIp development. High total phenol concentration combined with high expression of the gene encoding PPO was also associated with CIp; however, high expression ratio of PAL to PPO was found in mature skin, and may be associated with reduced CIp disorder. The results presented suggest future possibilities for controlling the CIp phenomenon.
format	article
author	Ravi Singh Baghel Alexandra Keren-Keiserman Idit Ginzberg
author_facet	Ravi Singh Baghel Alexandra Keren-Keiserman Idit Ginzberg
author_sort	Ravi Singh Baghel
title	Metabolic changes in pomegranate fruit skin following cold storage promote chilling injury of the peel
title_short	Metabolic changes in pomegranate fruit skin following cold storage promote chilling injury of the peel
title_full	Metabolic changes in pomegranate fruit skin following cold storage promote chilling injury of the peel
title_fullStr	Metabolic changes in pomegranate fruit skin following cold storage promote chilling injury of the peel
title_full_unstemmed	Metabolic changes in pomegranate fruit skin following cold storage promote chilling injury of the peel
title_sort	metabolic changes in pomegranate fruit skin following cold storage promote chilling injury of the peel
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/eaeb55fca3294376b2c4dd81b590a97d
work_keys_str_mv	AT ravisinghbaghel metabolicchangesinpomegranatefruitskinfollowingcoldstoragepromotechillinginjuryofthepeel AT alexandrakerenkeiserman metabolicchangesinpomegranatefruitskinfollowingcoldstoragepromotechillinginjuryofthepeel AT iditginzberg metabolicchangesinpomegranatefruitskinfollowingcoldstoragepromotechillinginjuryofthepeel
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Metabolic changes in pomegranate fruit skin following cold storage promote chilling injury of the peel

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