Facultad de Ciencias Agrícolas, Universidad Autónoma de Chiapas, 30660, Huehuetán, Mexico.
Departamento Ciencias de La Sustentabilidad, El Colegio de La Frontera Sur, Unidad Tapachula, Chiapas, México.
Curr Microbiol. 2024 May 31;81(7):199. doi: 10.1007/s00284-024-03728-3.
The present study evaluated the acaricidal activity of three Serratia strains isolated from Mimosa pudica nodules in the Lancandon zone Chiapas, Mexico. The analysis of the genomes based on the Average Nucleotide Identity, the phylogenetic relationships allows the isolates to be placed in the Serria ureilytica clade. The size of the genomes of the three strains is 5.4 Mb, with a GC content of 59%. The Serratia UTS2 strain presented the highest mortality with 61.41% against Tyrophagus putrescentiae followed by the Serratia UTS4 strain with 52.66% and Serratia UTS3 with 47.69% at 72 h at a concentration of 1X10 cell/mL. In the bioinformatic analysis of the genomes, genes related to the synthesis of chitinases, proteases and cellulases were identified, which have been reported for the biocontrol of mites. It is the first report of S. ureilytica with acaricidal activity, which may be an alternative for the biocontrol of stored products with high fat and protein content.
本研究评估了从墨西哥恰帕斯州兰坎顿地区含羞草根瘤中分离出的三株粘质沙雷氏菌的杀螨活性。基于平均核苷酸同一性的基因组分析和系统发育关系使分离株被归入粘质沙雷氏菌 ureilytica 分支。三株菌的基因组大小为 5.4 Mb，GC 含量为 59%。菌株 Serratia UTS2 在 1X10 细胞/mL 浓度下对腐食酪螨的致死率最高，为 61.41%，其次是菌株 Serratia UTS4（52.66%）和 Serratia UTS3（47.69%），在 72 小时时。在基因组的生物信息学分析中，鉴定到了与几丁质酶、蛋白酶和纤维素酶合成相关的基因，这些基因已被报道可用于防治螨虫。这是粘质沙雷氏菌 ureilytica 具有杀螨活性的首次报道，它可能是防治高脂肪和高蛋白含量的储存产品的一种替代方法。
