title: Chilling Stress Upregulates α-Linolenic Acid-Oxidation Pathway and Induces Volatiles of C6and C9Aldehydes in Mango Fruit.
abstract: Mango-fruit storage period and shelf life are prolonged by cold storage. However, chilling temperature induces physiological and molecular changes, compromising fruit quality. In our previous transcriptomic study of mango fruit, cold storage at suboptimal temperature (5 °C) activated the α-linolenic acid metabolic pathway. To evaluate changes in fruit quality during chilling, we analyzed mango "Keitt" fruit peel volatiles. GC-MS analysis revealed significant modulations in fruit volatiles during storage at suboptimal temperature. Fewer changes were seen in response to the time of storage. The mango volatiles related to aroma, such as δ-3-carene, (Z)-β-ocimene, and terpinolene, were downregulated during the storage at suboptimal temperature. In contrast, C6and C9aldehydes and alcohols-α-linolenic acid derivatives 1-hexanal, (Z)-3-hexenal, (Z)-3-hexenol, (E)-2-hexenal, and nonanal-were elevated during suboptimal-temperature storage, before chilling-injury symptoms appeared. Detection of those molecules before chilling symptoms could lead to a new agro-technology to avoid chilling injuries and maintain fruit quality during cold storage at the lowest possible temperature.
authors.affiliation: Department of Postharvest Science of Fresh Produce, Agricultural Research Organization, Volcani Center , Bet Dagan 50250, Israel.
authors.forename: Velu
authors.initials: V
authors.lastname: Sivankalyani
authors.affiliation: Department of Postharvest Science of Fresh Produce, Agricultural Research Organization, Volcani Center , Bet Dagan 50250, Israel.|Robert H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem , Rehovot 76100, Israel.
authors.forename: Itay
authors.initials: I
authors.lastname: Maoz
authors.affiliation: Department of Postharvest Science of Fresh Produce, Agricultural Research Organization, Volcani Center , Bet Dagan 50250, Israel.
authors.forename: Oleg
authors.initials: O
authors.lastname: Feygenberg
authors.affiliation: Department of Postharvest Science of Fresh Produce, Agricultural Research Organization, Volcani Center , Bet Dagan 50250, Israel.
authors.forename: Dalia
authors.initials: D
authors.lastname: Maurer
authors.affiliation: Department of Postharvest Science of Fresh Produce, Agricultural Research Organization, Volcani Center , Bet Dagan 50250, Israel.
authors.forename: Noam
authors.identifier: http://orcid.org/0000-0001-7163-6514
authors.initials: N
authors.lastname: Alkan
mesh_terms: D000447:Aldehydes / Q000737:chemistry* / Q000378:metabolism; D003080:Cold Temperature; D061353:Food Storage; D005638:Fruit / Q000737:chemistry / Q000378:metabolism; D031022:Mangifera / Q000737:chemistry / Q000378:metabolism*; D015394:Molecular Structure; D010084:Oxidation-Reduction; D014835:Volatilization; D017962:alpha-Linolenic Acid / Q000737:chemistry / Q000378:metabolism*
chemical_list: D000447:Aldehydes; D017962:alpha-Linolenic Acid
keywords: chilling injuries; mango fruit; oxylipins; volatiles; α-linolenic acid-oxidation pathway