2010
DOI: 10.1590/s1982-56762010000500008
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Mecanismos de defesa eliciados por ulvana contra Uromyces appendiculatus em três cultivares de feijoeiro

Abstract: O feijão é considerado um alimento de grande importância econômica e social, constituindo uma das principais fontes de proteína utilizadas na alimentação da população brasileira. Dentre o grande número de doenças que ocorrem na cultura, a ferrugem causada pelo fungo Uromyces appendiculatus F. Strauss é considerada uma das mais importantes, podendo causar prejuízos de até 45% na produção em cultivares suscetíveis, sob ambiente favorável (Jesus Junior et al., 2001).Os primeiros sintomas são observados na superfí… Show more

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Cited by 19 publications
(16 citation statements)
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References 17 publications
(19 reference statements)
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“…The eliciting defense activated by ulvan has been reported in other pathosystems such as bean-U. appendiculatus (Borsato et al, 2010) and bean-C. lindemuthianum (Freitas & Stadnik, 2012), where the polysaccharide increased the post-infection activity of glucanase and peroxidase, respectively. Increase in peroxidase activity occured in apple plants at 72 h after infection with C. gloeosporioides, but not earlier and without affecting glucanase (Araujo & Stadnik, 2013).…”
Section: Ulvansmentioning
confidence: 69%
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“…The eliciting defense activated by ulvan has been reported in other pathosystems such as bean-U. appendiculatus (Borsato et al, 2010) and bean-C. lindemuthianum (Freitas & Stadnik, 2012), where the polysaccharide increased the post-infection activity of glucanase and peroxidase, respectively. Increase in peroxidase activity occured in apple plants at 72 h after infection with C. gloeosporioides, but not earlier and without affecting glucanase (Araujo & Stadnik, 2013).…”
Section: Ulvansmentioning
confidence: 69%
“…Borsato et al (2010) observed that the ulvan spray increased glucanase activity in the moderately susceptible bean cv. Pérola, but not in 'Juriti', a cultivar that is highly susceptible to U. appendiculatus.…”
Section: Ulvansmentioning
confidence: 99%
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“…Indeed, induced resistance has often been correlated with enhanced POD activity in apple plants (BAYSAL;ZELLER, 2004;BRISSET et al, 2000;HASSAN;. Glucanases are lytic enzymes that hydrolyze β-1,3-glucans, one of the major components of the cell walls of fungi and bacteria ( VAN LOON et al, 2006), and an increase in GLU activity has been associated with apple resistance against fire blight (BRISSET et al, 2000) and ulvan-induced resistance against bean rust (BORSATO et al, 2010).…”
Section: Introductionmentioning
confidence: 99%