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dc.contributor.authorPassos, João Frederico Mangrich dospt_BR
dc.contributor.authorCosta, Pedro Beschoren dapt_BR
dc.contributor.authorCosta, Murilo Dallapt_BR
dc.contributor.authorZaffari, Gilmar Robertopt_BR
dc.contributor.authorNava, Gilbertopt_BR
dc.contributor.authorBoneti, José Itamar da Silvapt_BR
dc.contributor.authorOliveira, Andreia Mara Rotta dept_BR
dc.contributor.authorPassaglia, Luciane Maria Pereirapt_BR
dc.date.accessioned2015-04-02T02:00:21Zpt_BR
dc.date.issued2014pt_BR
dc.identifier.issn1415-4757pt_BR
dc.identifier.urihttp://hdl.handle.net/10183/114785pt_BR
dc.description.abstractThis study evaluated the diversity of cultivable plant growth-promoting (PGP) bacteria associated with apple trees cultivated under different crop management systems and their antagonistic ability against Colletotrichum gloeosporioides. Samples of roots and rhizospheric soil from apple trees cultivated in organic and conventional orchards in southern Brazil were collected, together with soil samples from an area never used for agriculture (native field). Bacteria were identified at the genus level by PCR-RFLP and partial sequencing of the 16S rRNA, and were evaluated for some PGP abilities. The most abundant bacterial genera identified were Enterobacter (27.7%), Pseudomonas (18.7%), Burkholderia (13.7%), and Rahnella (12.3%). Sixty-nine isolates presented some antagonist activity against C. gloeosporioides. In a greenhouse experiment, five days after exposure to C. gloeosporioides, an average of 30% of the leaf area of plants inoculated with isolate 89 (identified as Burkholderia sp.) were infected, whereas 60 to 73% of the leaf area of untreated plants was affected by fungal attack. Our results allowed us to infer how anthropogenic activity is affecting the bacterial communities in soil associated with apple tree crop systems, and to obtain an isolate that was able to delay the emergence of an important disease for this culture.en
dc.format.mimetypeapplication/pdf
dc.language.isoengpt_BR
dc.relation.ispartofGenetics and molecular biology. Ribeirão Preto. Vol. 37, n. 3 (Sept. 2014), p. 560-572pt_BR
dc.rightsOpen Accessen
dc.subjectPlant growth-promoting bacteriaen
dc.subjectColletotrichum gloeosporioidespt_BR
dc.subjectMaçapt_BR
dc.subjectApple treeen
dc.subjectAntagonistic activityen
dc.subjectColletotrichum gloeosporioidesen
dc.titleCultivable bacteria isolated from apple trees cultivated under different crop systems: diversity and antagonist activity against colletotrichum gloeosporioidespt_BR
dc.typeArtigo de periódicopt_BR
dc.identifier.nrb000939245pt_BR
dc.type.originNacionalpt_BR


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