Molecular and biochemical differences underlying the efficacy of lovastatin in preventing the onset of superficial scald in a susceptible and resistant Pyrus communis L. cultivar
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Autor/a
Busatto, Nicola
Giné-Bordonaba, Jordi
Lindo-Garcia, Violeta
Farneti, Brian
Biasioli, Franco
Vrhoysek, Urska
Costa, Fabrizio
Fecha de publicación
2020-12-24ISSN
0925-5214
Resumen
The molecular and biochemical events underlying the onset of superficial scald in two pear cultivars with different susceptibility (‘Blanquilla’ and ‘Conference’) was investigated in fruit untreated and treated with lovastatin, 1-MCP or ethylene. ‘Conference’ pears were characterized by higher content of flavonols and linolenic acid (18:3), two metabolites related to chilling injury resistance. In this cultivar, the expression level of three genes belonging to the ascorbate glutathione pathway (APX, DHAR and MDHAR) were constitutively over-expressed, highlighting the role that endogenous antioxidant potential played in scald control. In the scald-susceptible cultivar (‘Blanquilla’) the lovastatin treatment, in contrast to 1-MCP, effectively prevented superficial scald development and α-farnesene production without affecting fruit ripening. Moreover, lovastatin stimulated an increased production of ethanol and oleic + cis vaccenic acid (18:1), both compounds being also involved in cold stress tolerance. In both cultivars, and in contrast to 1-MCP, lovastatin did not impair the expression level of the genes devoted to ethylene production (ACO, ACS) and perception (ERS1, ERS2). As a consequence, the expression levels of the genes involved in texture modifications (PG1) and volatile emission (LOX, HPL, ADH and AAT) were maintained in lovastatin-treated samples allowing the fruit to reach an adequate final quality.
The results from this study are discussed to highlight the complex regulatory network underlying superficial scald development in different pear cultivars.
Tipo de documento
Artículo
Versión del documento
Versión aceptada
Lengua
Inglés
Materias (CDU)
633 - Cultivos y producciones
Páginas
39
Publicado por
Elsevier
Publicado en
Postharvest Biology and Technoogy
Citación
Busatto, Nicola, Jordi Giné-Bordonaba, Christian Larrigaudière, Violeta Lindo-Garcia, Brian Farneti, Franco Biasioli, Urska Vrhovsek, and Fabrizio Costa. 2021. "Molecular And Biochemical Differences Underlying The Efficacy Of Lovastatin In Preventing The Onset Of Superficial Scald In A Susceptible And Resistant Pyrus Communis L. Cultivar". Postharvest Biology And Technology 173: 111435. doi:10.1016/j.postharvbio.2020.111435.
Número del acuerdo de la subvención
MINECO/Programa Estatal de I+D+I orientada a los retos de la sociedad/AGL2017-87923-R/CARACTERIZACION VARIETAL DE LA REGULACION BIOQUIMICA DEL ESCALDADO SUPERFICIAL EN PERA/
Program
Postcollita
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