Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.5/3853
Título: Correlations between disease severity, glucosinolate profiles and total phenolics and Xanthomonas campestris pv. campestris inoculation of different Brassicaceae
Autor: Aires, Alfredo
Dias, Carla S.P.
Carvalho, Rosa
Oliveira, Helena
Monteiro, António A.
Simóes, Manuel Vieira
Rosa, Eduardo A.S.
Bennett, Richard N.
Saavedra, Maria José
Palavras-chave: vegetable Brassica
plant pathogenic bacteria
phytochemicals
isothiocynates
Data: 2011
Editora: Elsevier
Citação: "Scientia Horticulturae". ISSN 0304-4238. 129 (2011) 503-510
Resumo: Many Brassicaceae species are economically important crops and Xanthomonas campestris pv. campestris (Xcc), the causal agent of black rot, is considered one of the most important necrotrophic plant bacterial diseases occurring worldwide on these and many other crops. Therefore identifying resistance mechanisms and genes is crucial. Researchers continue to investigate the role of phytochemicals (plant secondary metabolites) in protecting plants against diseases and pathogens. Glucosinolates (GLS), and more specifically their hydrolysis products, are known to have various biological effects including antimicrobial activity. From the positive results of initial in vitro studies with Xcc and other pathogenic bacteria new experiments were designed to evaluate the possible in planta role of GLS, and also phenolics, in the interaction with Xcc. The in planta studies, with various Brassicaceae seedlings, have shown a correlation between GLS profiles, and therefore the subsequent hydrolysis products, and the inhibition of Xcc growth. There were no significant correlations between Xcc infection and total phenolics. Positive correlations were found between specific and total GLS contents and the severity of disease. Further in vitro and in planta studies need to be performed to evaluate the role of GLS and other defense mechanisms in Xcc and other important bacterial infections of Brassicaceae crops.
Peer review: yes
URI: http://hdl.handle.net/10400.5/3853
ISSN: 0304-4238
Versão do Editor: www.elsevier.com/locate/scihorti
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