03492naa a2200601 a 450000100080000000500110000800800410001902200140006002400360007410000250011024501800013526000090031552016990032465000120202365000150203565000240205065000220207465000110209665000180210765000280212565000210215365000200217465000100219465000110220465000230221565000230223865000290226165000150229065000120230565300090231765300240232665300240235065300260237465300280240065300130242865300400244165300240248165300240250565300220252965300300255165300240258165300320260565300320263765300200266965300240268965300190271365300210273270000160275370000170276970000210278670000220280777300610282921306382021-06-28       2020    bl uuuu     u00u1 u    #d  a2471-20867 a10.3934/agrfood.2020.4.8502DOI1 aVALE, S. M. L. S. do  aBiotechnological potential of endophytic bacteria of bamboo Guadua sp. for promotion of growth of micropropagated yam plants (Dioscorea rotundata Poir).h[electronic resource]  c2020  aEndophytic microorganisms have a wide genetic diversity, being very useful for agriculture, for producing growth regulators and making nutrients available to plants. In this context, this research aimed to isolate and characterize endophytic bacteria from bamboo Guadua sp., in order to evaluate the use of these microorganisms in promoting plant growth in yam plants (Dioscorea rotundata Poir). For this, the macromorphological characteristics of bacterial colonies were studied: shape, borders, consistency, color, brightness. Micromorphological analysis was performed using the Gram method. Biological tests of phosphate solubilization, biological nitrogen fixation and indole acetic acid production were carried out, where the bacteria with the best results were selected to assess the potential to promote the growth of white yam plants. The growth experiment consisted of four treatments: a control (without inoculation) and three treatments with endophytic bacteria, inoculated in pre-acclimated yam plants. Each treatment consisted of 6 repetitions with 5 plants per plot, totaling 30 plants per treatment. The colonies showed similar patterns of morphological characteristics for the three collection sites, with characteristics such as 'circular' shape, 'entire' border, 'creamy' consistency, 'brown' color and 'bright' shine. We observed that 39.1% of the bacteria were able to perform phosphate solubilization, 61.9% performed atmospheric nitrogen fixation and 26.9% performed indole acetic acid synthesis. The results showed that the endophytic bacteria isolated from Guadua sp. did not promote dry matter accumulation of white yam plants after 45 days of cultivation in a nursery.  aBamboos  aCrop yield  aDioscorea rotundata  aGrowth regulators  aGuadua  aNursery crops  aPlant growth substances  aPlant morphology  aPlant nutrition  aBambu  aInhame  aMorfologia Vegetal  aNutrição Vegetal  aRegulador de Crescimento  aRendimento  aViveiro  aAcre  aAmazonia Occidental  aAmazônia Ocidental  aBactéria endofítica  aBactérias endofíticas  aBambúes  aCaracterísticas macromorfológicas  aCultivos de viveros  aEndophytic bacteria  aLago do Silêncio  aMacromorphological traits  aParque Zoobotânico  aReguladores del crecimiento  aRendimiento de los cultivos  aRio Branco (AC)  aSena Madureira (AC)  aWestern Amazon  aWhite guinea yam1 aSIVIERO, A.1 aLESSA, L. S.1 aMATTAR, E. P. L.1 aVALE, P. A. A. do  tAIMS Agriculture and Foodgv. 5, n. 4, p. 850-867, 2020.