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Paraburkholderia lycopersici sp. nov., a nitrogen-fixing species isolated from rhizoplane of Lycopersicon esculentum Mill. var. Saladette in Mexico
Systematic and Applied Microbiology ( IF 3.3 ) Pub Date : 2020-09-15 , DOI: 10.1016/j.syapm.2020.126133
Erika Yanet Tapia-García , Ivan Arroyo-Herrera , Fernando Uriel Rojas-Rojas , J. Antonio Ibarra , María Soledad Vásquez-Murrieta , Lourdes Martínez-Aguilar , Isabel M. López-Lara , William B. Whitman , Paulina Estrada de los Santos

A survey of our in-house bacterial collection identified a group of six strains isolated from the tomato rhizoplane that possessed 16S rRNA gene sequences with 98.2% sequence similarity to Paraburkholderia pallida, suggesting that these strains represented a novel species. Multilocus sequence analysis using gltB, lepA and recA gene sequences showed the clustering of the strains and the BOX-PCR patterns were similar among these strains. The average nucleotide identity and the DNA-DNA virtual hybridization of strain TNe-862T was <89% and <34%, respectively, to the genomes of any sequenced Paraburkholderia species. The genome of strain TNe-862T possessed all the genes necessary for nitrogen fixation and biosynthesis of indoleacetic acid and antimicrobials terpenes, phosphonates and bacteriocins. It also contained genes for metal resistance, xenobiotic degradation, and hydrolytic enzymes such as a putative chitinase and isoamylase. Even though the strain contained potential genes for degradation of cellulose and starch, the bacterium was unable to utilize these substrates in culture medium. The genome encoded flagella and pili as well as multiple chemotaxis systems. In addition, genes encoding for the type I, II, IV, V and VI secretion systems were also present. The strains grow up to 42 °C and 5% NaCl. The optimum growth pH was 8. The major cellular fatty acids were C16:0 and C18:1 ω7c. Based on this polyphasic analysis, these strains represent a novel species in the genus Paraburkholderia, for which the name Paraburkholderia lycopersici sp. nov. is proposed. The type strain is TNe-862T (=LMG 26415T=CIP 110323T).



中文翻译:

副旁绒菌lycopersici sp。nov。,从番茄番茄的根际平面分离的固氮物种。变种 墨西哥沙拉

我们对内部细菌收集的一项调查确定了从番茄根际平面分离的六株菌株,这些菌株具有16S rRNA基因序列,与拟南芥有98.2%的序列相似性,表明这些菌株代表了一种新物种。使用gltBlepArecA基因序列进行的多基因座序列分析表明,这些菌株的聚类结果和这些菌株的BOX-PCR模式相似。与任何测序的抛物线菌属物种的基因组相比,菌株TNe-862 T的平均核苷酸同一性和DNA-DNA虚拟杂交分别<89%和<34%。TNe-862 T菌株的基因组拥有吲哚乙酸和抗菌素萜烯,膦酸酯和细菌素的固氮和生物合成所需的所有基因。它还包含金属抗性,异种生物降解和水解酶(如假定的几丁质酶和异淀粉酶)的基因。即使该菌株含有降解纤维素和淀粉的潜在基因,该细菌也无法在培养基中利用这些底物。基因组编码鞭毛和菌毛以及多种趋化系统。此外,还存在编码I,II,IV,V和VI型分泌系统的基因。菌株生长到42°C和5%NaCl。最佳的生长pH为8。主要的细胞脂肪酸为C 16:0和C 18: 1ω7c 基于此多相分析,这些菌株代表了Paraburkholderia属中的一个新物种,其名称为Paraburkholderia lycopersici sp。十一月 被提议。类型应变为TNe-862 T(= LMG 26415 T = CIP 110323 T)。

更新日期:2020-09-29
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