Deciphering the behind blackspot exocarp disorder in avocado cv. Hass through a hormonal, transcriptional and metabolic integration approach

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dc.contributor.authorNunez-Lillo, Gerardo
dc.contributor.authorHernandez, Ignacia
dc.contributor.authorOlmedo, Patricio
dc.contributor.authorPonce, Excequel
dc.contributor.authorArancibia-Guerra, Camila
dc.contributor.authorSepulveda, Laura
dc.contributor.authorCarrasco-Pancorbo, Alegria
dc.contributor.authorBeiro-Valenzuela, Maria Gemma
dc.contributor.authorCarrera, Esther
dc.contributor.authorBanos, Jorge
dc.contributor.authorCampos, David
dc.contributor.authorMeneses, Claudio
dc.contributor.authorPedreschi, Romina
dc.date.accessioned2025-01-20T16:08:37Z
dc.date.available2025-01-20T16:08:37Z
dc.date.issued2024
dc.description.abstractAvocado cv. Hass is an important sub-tropical crop with an increasing global demand. However, the avocado supply chain experiences significant fruit losses, particularly during the postharvest stage due to diseases and disorders that manifest after prolonged cold storage or the ready-to-eat stage. The blackspot exocarp disorder, which appears as brown or black blotches only after extended cold storage conditions, leads to substantial commercial losses for exported avocados. This research aimed to identify transcriptomic, metabolomic, and hormonal changes in avocado fruits affected by blackspot disorder, differentiating between the green and black exocarp tissues directly impacted by this physiological disorder. The results showed a correlation between the black-colored exocarp of blackspot affected fruits with high levels of gibberellins, cytokinins, jasmonic acid and salicylic acid hormones. Metabolically, these changes were accompanied by a high fatty acid content of oleate, palmitate and linoleate. Using a metabolic pathway reconstruction analysis, we integrated hormonal and metabolic data with transcriptomic information. This approach identified several genes involved in central carbon metabolism, long-chain fatty acid elongation, and jasmonate/salicylate biosynthesis pathways, as well as a possible accumulation of lignins due to a high expression of genes associated with the phenylpropanoid pathway in the black exocarp of blackspot-affected fruits. These findings suggest that blackspot disorder results from a combination of plant defense mechanisms triggered to strengthen the fruit exocarp tissue.
dc.fuente.origenWOS
dc.identifier.doi10.1016/j.postharvbio.2024.113163
dc.identifier.eissn1873-2356
dc.identifier.issn0925-5214
dc.identifier.urihttps://doi.org/10.1016/j.postharvbio.2024.113163
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/90092
dc.identifier.wosidWOS:001312355900001
dc.language.isoen
dc.revistaPostharvest biology and technology
dc.rightsacceso restringido
dc.subjectPhysiological disorder
dc.subjectExocarp
dc.subjectLignins
dc.subjectFatty acids
dc.subjectJasmonic acid
dc.subjectSalicylic acid
dc.titleDeciphering the behind blackspot exocarp disorder in avocado cv. Hass through a hormonal, transcriptional and metabolic integration approach
dc.typeartículo
dc.volumen218
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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