Lopes-Santos Lucilene, Castro Daniel Bedo Assumpção, Ferreira-Tonin Mariana, Corrêa Daniele Bussioli Alves, Weir Bevan Simon, Park Duckchul, Ottoboni Laura Maria Mariscal, Neto Júlio Rodrigues, Destéfano Suzete Aparecida Lanza
Laboratório de Bacteriologia Vegetal, Instituto Biológico, Rod. Heitor Penteado KM 3, Campinas, SP, CEP 13092-543, Brazil.
Centro de Biologia Molecular e Engenharia Genética, Universidade Estadual de Campinas - UNICAMP, Campinas, Brazil.
Antonie Van Leeuwenhoek. 2017 Jun;110(6):727-736. doi: 10.1007/s10482-017-0842-6. Epub 2017 Feb 11.
The phylogenetic classification of the species Burkholderia andropogonis within the Burkholderia genus was reassessed using 16S rRNA gene phylogenetic analysis and multilocus sequence analysis (MLSA). Both phylogenetic trees revealed two main groups, named A and B, strongly supported by high bootstrap values (100%). Group A encompassed all of the Burkholderia species complex, whi.le Group B only comprised B. andropogonis species, with low percentage similarities with other species of the genus, from 92 to 95% for 16S rRNA gene sequences and 83% for conserved gene sequences. Average nucleotide identity (ANI), tetranucleotide signature frequency, and percentage of conserved proteins POCP analyses were also carried out, and in the three analyses B. andropogonis showed lower values when compared to the other Burkholderia species complex, near 71% for ANI, from 0.484 to 0.724 for tetranucleotide signature frequency, and around 50% for POCP, reinforcing the distance observed in the phylogenetic analyses. Our findings provide an important insight into the taxonomy of B. andropogonis. It is clear from the results that this bacterial species exhibits genotypic differences and represents a new genus described herein as Robbsia andropogonis gen. nov., comb. nov.
利用16S rRNA基因系统发育分析和多位点序列分析(MLSA)对伯克霍尔德菌属内的稻生伯克霍尔德菌物种进行了系统发育分类重新评估。两个系统发育树均显示出两个主要类群,命名为A和B,得到了高自展值(100%)的有力支持。A类群包含所有伯克霍尔德菌物种复合体,而B类群仅包含稻生伯克霍尔德菌物种,与该属其他物种的相似性百分比很低,16S rRNA基因序列为92%至95%,保守基因序列为83%。还进行了平均核苷酸同一性(ANI)、四核苷酸特征频率和保守蛋白百分比(POCP)分析,在这三项分析中,与其他伯克霍尔德菌物种复合体相比,稻生伯克霍尔德菌的值较低,ANI接近71%,四核苷酸特征频率为0.484至0.724,POCP约为50%,这进一步强化了系统发育分析中观察到的距离。我们的研究结果为稻生伯克霍尔德菌分类学提供了重要见解。从结果可以明显看出,这种细菌物种表现出基因型差异,并代表了本文描述的一个新属,命名为罗布西亚稻生菌属(Robbsia andropogonis gen. nov., comb. nov.)。