Please use this identifier to cite or link to this item: http://repositorio.ufla.br/jspui/handle/1/41993
Title: Induced defense responses in tomato against bacterial spot by proteins synthesized by endophytic bacteria
Keywords: Bacillus amyloliquefaciens
Bacillus pumilus
Endophytic bacterias
Tomato - Bacterial spot
Bactérias endofíticas
Tomateiro - Mancha bacteriana
Issue Date: 2013
Publisher: Sociedade Brasileira de Fitopatologia
Citation: LANNA FILHO, R. et al. Induced defense responses in tomato against bacterial spot by proteins synthesized by endophytic bacteria. Tropical Plant Pathology, Brasília, DF, v. 38, n. 4, p. 295-302, 2013.
Abstract: Some endophytes can synthesize molecules that elicit the induction of plant resistance to infection by pathogens. The objective of this study was to demonstrate that protein fractions 42 and 75 from Bacillus amyloliquefaciens and Bacillus pumilus were capable of acting as elicitors of induced resistance in tomato plants against Xanthomonas vesicatoria, following partial resolution by gel-filtration chromatography. Tomato plants sprayed with protein fractions 42 and 75 reduced, respectively, 63.5 and 56.6% of bacterial spot, compared with control plants. Additionally, these fractions promoted the increase of peroxidase (POX) and polyphenol oxidase (PPO) enzyme activities in treated plants. In SDS-PAGE stained with silver nitrate, protein fractions 42 and 75 appeared as simple bands with estimated molecular mass of 28 and 43 kDa, respectively. We report the partial characterization of two macromolecules synthesized by endophytic bacteria that act as elicitors of systemic resistance in tomato against X. vesicatoria.
URI: http://repositorio.ufla.br/jspui/handle/1/41993
Appears in Collections:DFP - Artigos publicados em periódicos



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