Pathogenicity and host susceptibility of penicillium spp. on citrus

Show simple item record Louw, Johannes Petrus Korsten, Lise 2015-02-23T12:26:16Z 2015-02-23T12:26:16Z 2015-01
dc.description.abstract Citrus fruit are exposed to numerous postharvest pathogens throughout the fresh produce supply chain. Well-known postharvest citrus fruit pathogens are Penicillium digitatum and P. italicum. Lesser-known pathogens include P. crustosum and P. expansum. This study examined pathogenicity and aggressiveness of Penicillium spp. present in fresh fruit supply chains on various Citrus spp. and cultivars. The impact of different inoculation methods and storage conditions on decay were also assessed. P. digitatum and P. italicum were the most aggressive Penicillium spp. on citrus but aggressiveness varied significantly over the evaluated citrus range. Decay and tissue-response lesions caused by P. crustosum were observed on ‘Nules Clementine’, ‘Nova’, ‘Owari Satsuma’, ‘Delta Valencia’, ‘Cambria Navel’, ‘Eureka’ seeded, and ‘Star Ruby’ for the first time. Likewise, these lesions caused by P. expansum were noted on Nules Clementine, Owari Satsuma, Delta Valencia, ‘Midknight Valencia’, and Eureka seeded for the first time. Tissue-response lesions affect fruit quality and some Penicillium spp. sporulated from the lesions, causing the inoculated species to complete their life cycle. New citrus–Penicillium spp. interactions were observed and the importance of monitoring inoculum loads of pathogens and nonhost pathogens were highlighted. en_ZA
dc.description.librarian am2015 en_ZA
dc.description.sponsorship National Research Foundation of South Africa UID: 78566 (NRF RISP grant for the ABI3500) en_ZA
dc.description.uri en_ZA
dc.identifier.citation Louw, JP & Korsten, L 2015, 'Pathogenicity and host susceptibility of penicillium spp. on citrus', Plant Disease, vol. 99, no. 1, pp. 21-30. en_ZA
dc.identifier.issn 0191-2917 (print)
dc.identifier.issn 1943-7692 (online)
dc.identifier.other 10.1094/PDIS-02-14-0122-RE
dc.language.iso en en_ZA
dc.publisher American Phytopathological Society en_ZA
dc.rights © 2015 The American Phytopathological Society en_ZA
dc.subject Pathogenicity en_ZA
dc.subject Host susceptibility en_ZA
dc.subject Penicillium spp. en_ZA
dc.subject Citrus fruit en_ZA
dc.subject Postharvest citrus fruit pathogens en_ZA
dc.title Pathogenicity and host susceptibility of penicillium spp. on citrus en_ZA
dc.type Preprint Article en_ZA

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