Effect of fruit maturity stage of orange on the wound response to Penicillium digitatum (pathogen) and P. expansum (non-host pathogen)
Torres Sanchis, Rosario
MetadataShow full item record
Penicillium digitatum and P. expansum are postharvest necrotrophic fungi that require wounds to infect the fruit. Therefore, injuries caused during harvesting and postharvest handling provide an optimal locus for infection. In this study, we evaluated the effect of wound response in oranges harvested at three different maturity stages and stored at two different temperatures (20 and 4°C), on the infection of fruit by either pathogen. The effect of wounding and pathogen inoculation on lignin content and the expression of several phenylpropanoid pathway-related genes were also analyzed. P. digitatum exhibited lower decay incidence and severity as the time between wounding and inoculation increased, and these differences were more evident in fruit from immature and commercial harvests. P. expansum was able to infect oranges, and lesions obtained at 4°C were larger than those obtained at 20°C. In general, lignin content was highest in fruit from the immature harvest. The accumulation of pal1 and pox1 mRNA at 24 h was higher in samples infected with both pathogens than in control samples. However, samples inoculated with P. digitatum showed an important decrease after 48 h. Our results indicate that maturity and storage temperature play important roles in orange wound response.
Is part ofActa Horticulturae (ISHS), 2014, vol. 1053, p. 177-184
European research projects
Showing items related by title, author, creator and subject.
Wound response in orange as a resistance mechanism against Penicillium digitatum (pathogen) and P. expansum (non-host pathogen) Vilanova, Laura; Torres Sanchis, Rosario; Viñas Almenar, Inmaculada; González-Candelas, Luis; Usall i Rodié, Josep; Fiori, S.; Solsona Aixalà, Cristina; Teixidó i Espasa, Neus (Elsevier, 2013)Penicillium digitatum is the most devastating postharvest pathogen of citrus. In addition, Penicillium expansum is the main pathogen of pome fruit, although recent studies have demonstrated its ability to infect oranges ...
Increasing maturity reduces wound response and lignification processes against Penicillium expansum (pathogen) and P. digitatum (non-host pathogen) infection in apples Vilanova, Laura; Viñas Almenar, Inmaculada; Torres Sanchis, Rosario; Usall i Rodié, Josep; Burón Moles, Gemma; Teixidó i Espasa, Neus (Elsevier, 2014)Penicillium expansum is the main postharvest pathogen of pome fruit and is a necrotrophic fungus that requires wounds to infect the fruit. Therefore, injuries caused during harvest and postharvest handling provide an optimal ...
Characterisation of H2O2 production to study compatible and non-host pathogen interactions in orange and apple fruit at different maturity stages. Burón Moles, Gemma; Torres Sanchis, Rosario; Teixidó i Espasa, Neus; Usall i Rodié, Josep; Vilanova, Laura; Viñas Almenar, Inmaculada (Elsevier, 2015)Penicillium digitatum and Penicillium expansum are the main postharvest pathogens of orange and applefruit, respectively. These wound pathogens can infect through injuries caused during harvest and posthar-vest handling, ...