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title Strain-related pathogenicity in Diplodia corticola
authors Felix, C; Pinto, G; Amaral, J; Fernandes, I; Alves, A; Esteves, AC
author full name Felix, C.; Pinto, G.; Amaral, J.; Fernandes, I.; Alves, A.; Esteves, A. C.
title Strain-related pathogenicity in Diplodia corticola
nationality internacional
language English
document type Article
abstract Diplodia corticola is one of the most aggressive fungal pathogens of Quercus species and is involved in the decline of Mediterranean cork oak forests and Californian oaks. Information regarding variation in virulence between strains is scarce. We hypothesize that D.corticola strains differ in virulence and consequently induce different symptoms in infected plants. To test this, infection assays were carried out on Quercus suber half-sib seedlings with seven strains of D.corticola. Visual symptoms of infection (external lesions, leaf wilting, exudation and others) were recorded in parallel with physiological and biochemical parameters. All strains were able to cause lesions but at differing levels of aggressiveness. We show that internal lesion length did not correlate directly with strain aggressiveness and this agrees with physiological parameters that should be taken into account to infer about strain pathogenicity. Infection by all strains induced an overall negative impact on the net photosynthetic rate and an increase in the oxidative stress status of plants; however, significant differences were found when the effects of different strains were compared. Results also suggest that being under optimum growth conditions, prior to and during infection, allowed plants to respond to the pathogen. At the end of the experiment, some strains of D.corticola established a latent pathogen-like relationship with cork oak. This is the first study to show that D.corticola virulence is strain-dependent.
author address [Felix, C.; Pinto, G.; Amaral, J.; Fernandes, I.; Alves, A.; Esteves, A. C.] Univ Aveiro, Dept Biol, CESAM, Aveiro, Portugal
reprint address Esteves, AC (reprint author), Univ Aveiro, Dept Biol, CESAM, Aveiro, Portugal.
e-mail address acesteves@ua.pt
researcherid number Pinto, GP/B-1271-2011; Esteves, Ana Cristina/B-2939-2008; Alves, Artur/C-3645-2008
orcid number Pinto, GP/0000-0001-7735-5131; Esteves, Ana Cristina/0000-0003-2239-2976; Alves, Artur/0000-0003-0117-2958; Amaral, Joana/0000-0002-3572-0070; Felix, Carina/0000-0002-9813-9400
funding agency and grant number Fundacao para a Ciencia e Tecnologia/Ministerio da Educacao e Ciencia (FCT/MEC); FEDER within the PT Partnership Agreement and Compete [UID/AMB/50017-POCI-01-0145-FEDER-007638]; FCT [IF/00835/2013, BPD/102572/2014, BPD/101669/2014, BD/97613/2013]
funding text This work was supported by to Fundacao para a Ciencia e Tecnologia/Ministerio da Educacao e Ciencia (FCT/MEC) through national funds, and the co-funding by the FEDER, within the PT2020 Partnership Agreement and Compete 2020 to CESAM (UID/AMB/50017-POCI-01-0145-FEDER-007638). The authors also acknowledge FCT financing to A. Alves (FCT Investigator Program-IF/00835/2013), A. C. Esteves (BPD/102572/2014), G. Pinto (BPD/101669/2014) and C. Felix (BD/97613/2013).
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cited reference count 50
publisher WILEY
publisher city HOBOKEN
publisher address 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
issn 1437-4781
29-character source abbreviation FOREST PATHOL
iso source abbreviation Forest Pathol.
publication date DEC
year published 2017
volume 47
issue 6
article number e12366
digital object identifier (doi) 10.1111/efp.12366
subject category 9
document delivery number Forestry
unique article identifier Forestry
link http://dx.doi.org/10.1111/efp.12366