01987naa a2200253 a 450000100080000000500110000800800410001910000210006024501900008126000090027152011260028065300260140665300150143265300350144765300360148270000170151870000170153570000190155270000130157170000180158470000230160270000240162577300840164911218372014-09-30       2014    bl uuuu     u00u1 u    #d1 aPASSOS, J. F. M.  aCultivable bacteria isolated from apple trees cultivated under different crop systemsbdiversity and antagonistic activity against Colletotrichum gloeosporioides.h[electronic resource]  c2014  aThis 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 wereEnterobacter(27.7%),Pseudomonas(18.7%),Burkholderia(13.7%), andRahnella(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 asBurkholderiasp.) were infected, whereas 60 to 73% of the leaf area of untreated plants was affected by fungal attack. Our results allowed us to infer  aantagonistic activity  aapple tree  aColletotrichum gloeosporioides  aplant growth-promoting bacteria1 aCOSTA, P. B.1 aCOSTA, M. D.1 aZAFFARI, G. R.1 aNAVA, G.1 aBONETI, J. I.1 aOLIVEIRA, A. M. R.1 aPASSAGLIA, L. M. P.  tGenetics and Molecular Biology, Ribeirão Pretogv. 37, n. 3, p. 560-572, 2014.