Virulence diversity of anthracnose pathogens (Colletotrichum acutatum and C. gloeosporioides complexes) on eight olive cultivars commonly grown in Portugal.

2.50
Hdl Handle:
http://hdl.handle.net/10547/576991
Title:
Virulence diversity of anthracnose pathogens (Colletotrichum acutatum and C. gloeosporioides complexes) on eight olive cultivars commonly grown in Portugal.
Authors:
Talhinhas, Pedro; Gonçalves, Elsa; Sreenivasaprasad, Surapareddy; Oliveira, Helena
Abstract:
Olive anthracnose, caused by Colletotrichum acutatum and C. gloeosporioides species complexes, is a major disease affecting fruits at maturity, causing significant yield losses, and poor fruit and oil quality. Diverse genetic groups, particularly belonging to C. acutatum s.l. have been reported among the pathogens, with recent research proposing these genetic groups as distinct species. In this work, the virulence diversity of isolates representing different populations of C. acutatum s.l. and C. gloeosporioides s.s. was studied using a set of eight olive cultivars. Higher disease severity was produced by isolates belonging to groups A2 and A5 of C. acutatum s.l. (=C. nymphaeae and C. acutatum s.s., respectively) compared to C. gloeosporioides s.s. isolates as well as isolates of C. acutatum s.l. group A4 (=C. godetiae). Anthracnose severity was higher on the cultivars ‘Cobrançosa’, ‘Maçanilha de Tavira’ and ‘Galega Vulgar’ and lower in ‘Azeitoneira’, ‘Blanqueta’, ‘Negrinha de Freixo’ and ‘Picual’, but results indicate the occurrence of isolate × cultivar interactions. Differences in severity could be related to differences in conidia germination and appressoria formation, suggesting that early host-pathogen recognition events can in part explain disease severity under favourable environmental conditions. Overall results revealed the higher virulence and fitness levels of genotypes belonging to certain genetic groups within C. acutatum suggesting their ability to adapt to diverse agro-climatic conditions including specific hosts.
Citation:
Talhinhas, P., Gonclaves, E., Sreenivasaprasad, S., Oliveira, H. (2015) 'Virulence diversity of anthracnose pathogens (Colletotrichum acutatum and C. gloeosporioides complexes) on eight olive cultivars commonly grown in Portugal'. European Journal of Plant Pathology 142 (1) pp73-83.
Publisher:
Springer Link
Journal:
European Journal of Plant Pathology
Issue Date:
May-2015
URI:
http://hdl.handle.net/10547/576991
DOI:
10.1007/s10658-014-0590-7
Additional Links:
http://link.springer.com/article/10.1007%2Fs10658-014-0590-7
Type:
Article
Language:
en
ISSN:
0929-1873
EISSN:
1573-8469
Sponsors:
Financial support (SFRH/BPD/88994/2012) by FCT (Fundação para a Ciência e a Tecnologia, Portugal). Dr. M. Whitelaw-Weckert is acknowledged for supplying isolate DAR76921.
Appears in Collections:
Environmental Science

Full metadata record

DC FieldValue Language
dc.contributor.authorTalhinhas, Pedroen
dc.contributor.authorGonçalves, Elsaen
dc.contributor.authorSreenivasaprasad, Surapareddyen
dc.contributor.authorOliveira, Helenaen
dc.date.accessioned2015-09-09T09:57:00Zen
dc.date.available2015-09-09T09:57:00Zen
dc.date.issued2015-05en
dc.identifier.citationTalhinhas, P., Gonclaves, E., Sreenivasaprasad, S., Oliveira, H. (2015) 'Virulence diversity of anthracnose pathogens (Colletotrichum acutatum and C. gloeosporioides complexes) on eight olive cultivars commonly grown in Portugal'. European Journal of Plant Pathology 142 (1) pp73-83.en
dc.identifier.issn0929-1873en
dc.identifier.doi10.1007/s10658-014-0590-7en
dc.identifier.urihttp://hdl.handle.net/10547/576991en
dc.description.abstractOlive anthracnose, caused by Colletotrichum acutatum and C. gloeosporioides species complexes, is a major disease affecting fruits at maturity, causing significant yield losses, and poor fruit and oil quality. Diverse genetic groups, particularly belonging to C. acutatum s.l. have been reported among the pathogens, with recent research proposing these genetic groups as distinct species. In this work, the virulence diversity of isolates representing different populations of C. acutatum s.l. and C. gloeosporioides s.s. was studied using a set of eight olive cultivars. Higher disease severity was produced by isolates belonging to groups A2 and A5 of C. acutatum s.l. (=C. nymphaeae and C. acutatum s.s., respectively) compared to C. gloeosporioides s.s. isolates as well as isolates of C. acutatum s.l. group A4 (=C. godetiae). Anthracnose severity was higher on the cultivars ‘Cobrançosa’, ‘Maçanilha de Tavira’ and ‘Galega Vulgar’ and lower in ‘Azeitoneira’, ‘Blanqueta’, ‘Negrinha de Freixo’ and ‘Picual’, but results indicate the occurrence of isolate × cultivar interactions. Differences in severity could be related to differences in conidia germination and appressoria formation, suggesting that early host-pathogen recognition events can in part explain disease severity under favourable environmental conditions. Overall results revealed the higher virulence and fitness levels of genotypes belonging to certain genetic groups within C. acutatum suggesting their ability to adapt to diverse agro-climatic conditions including specific hosts.en
dc.description.sponsorshipFinancial support (SFRH/BPD/88994/2012) by FCT (Fundação para a Ciência e a Tecnologia, Portugal). Dr. M. Whitelaw-Weckert is acknowledged for supplying isolate DAR76921.en
dc.language.isoenen
dc.publisherSpringer Linken
dc.relation.urlhttp://link.springer.com/article/10.1007%2Fs10658-014-0590-7en
dc.subjectolive anthracnoseen
dc.subjecthost-pathogen genotype interactionsen
dc.subjectOlea europaea ssp. europaeaen
dc.subjectColletotrichum acutatumen
dc.subjectColletotrichum gloeosporioidesen
dc.subjectPortugalen
dc.titleVirulence diversity of anthracnose pathogens (Colletotrichum acutatum and C. gloeosporioides complexes) on eight olive cultivars commonly grown in Portugal.en
dc.typeArticleen
dc.identifier.eissn1573-8469en
dc.identifier.journalEuropean Journal of Plant Pathologyen
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