title: Preharvest UV-C radiation influences physiological, biochemical, and transcriptional changes in strawberry cv. Camarosa.
abstract: Ultraviolet C (UV-C) radiation is known for preventing fungal decay and enhancing phytochemical content in fruit when applied postharvest. However, limited knowledge is available regarding fruit responses to preharvest application of UV-C radiation. Thus, the effects of UV-C radiation on photosynthetic efficiency, dry matter accumulation and partitioning, fruit yield and decay, phytochemical content, and relative transcript accumulation of genes associated with these metabolic pathways were monitored in strawberry (Fragaria x ananassa Duch.) cv. Camarosa. A reduction in photosynthetic efficiency was followed by a decrease in light harvesting complex LhcIIb-1 mRNA accumulation as well as a decrease in yield per plant. Phenylalanine ammonia lyase activity, phenolic, anthocyanin, and L-ascorbic acid contents were higher in UV-C treated fruit. In addition, preharvest UV-C treatment reduced microorganism incidence in the greenhouse and on the fruit surface, increased the accumulation of β-1,3-Gluc and PR-1 mRNA, and prevented fruit decay.
authors.affiliation: UFPel, Universidade Federal de Pelotas, CDTec, Programa de Pós-graduação em Biotecnologia, C.P. 354, CEP 96010-000, Pelotas, RS, Brazil. Electronic address: isarubin@gmail.com.
authors.forename: Isadora Rubin
authors.initials: IR
authors.lastname: de Oliveira
authors.affiliation: UFPel, Universidade Federal de Pelotas, FAEM, Departamento de Ciência e Tecnologia Agroindustrial, Programa de Pós-graduação em Ciência e Tecnologia de Alimentos, C.P. 354, CEP 96010-900, Pelotas, RS, Brazil.
authors.forename: Giseli Rodrigues
authors.initials: GR
authors.lastname: Crizel
authors.affiliation: IFF, Instituto Federal Farroupilha, Eixo de Produção Alimentícia, Rua Fábio João Andolhe, 1100, Bairro Floresta, CEP 98590-000, Campus Santo Augusto, Santo Augusto, RS, Brazil.
authors.forename: Joseana
authors.initials: J
authors.lastname: Severo
authors.affiliation: INRA, UMR408 Sécurité et Qualité des Produits d'Origine Végétale, F-84000, Avignon, France; Avignon University, UMR408 Sécurité et Qualité des Produits d'Origine Végétale, F-84000, Avignon, France.
authors.forename: Catherine M G C
authors.initials: CMGC
authors.lastname: Renard
authors.affiliation: UFPel, Universidade Federal de Pelotas, FAEM, Departamento de Ciência e Tecnologia Agroindustrial, Programa de Pós-graduação em Ciência e Tecnologia de Alimentos, C.P. 354, CEP 96010-900, Pelotas, RS, Brazil.
authors.forename: Fabio Clasen
authors.initials: FC
authors.lastname: Chaves
authors.affiliation: UFPel, Universidade Federal de Pelotas, FAEM, Departamento de Ciência e Tecnologia Agroindustrial, Programa de Pós-graduação em Ciência e Tecnologia de Alimentos, C.P. 354, CEP 96010-900, Pelotas, RS, Brazil.
authors.forename: Cesar Valmor
authors.initials: CV
authors.lastname: Rombaldi
mesh_terms: D000872:Anthocyanins / Q000378:metabolism; D000975:Antioxidants / Q000378:metabolism; D001205:Ascorbic Acid / Q000378:metabolism; D020171:Botrytis / Q000472:pathogenicity / Q000528:radiation effects; D063427:Food Quality; D031985:Fragaria / Q000737:chemistry / Q000502:physiology* / Q000528:radiation effects*; D005638:Fruit / Q000382:microbiology / Q000502:physiology / Q000528:radiation effects; D018506:Gene Expression Regulation, Plant / Q000528:radiation effects; D010650:Phenylalanine Ammonia-Lyase / Q000235:genetics / Q000378:metabolism; D010788:Photosynthesis / Q000528:radiation effects; D045332:Photosystem II Protein Complex / Q000378:metabolism; D018515:Plant Leaves / Q000737:chemistry / Q000528:radiation effects; D010940:Plant Proteins / Q000235:genetics; D014466:Ultraviolet Rays
chemical_list: D000872:Anthocyanins; D000975:Antioxidants; D045332:Photosystem II Protein Complex; D010940:Plant Proteins; D010650:Phenylalanine Ammonia-Lyase; D001205:Ascorbic Acid
keywords: Abiotic stress; Antioxidants; Fragaria × ananassa Duch.; Gray mold disease