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Abstract
Lecanicillium saksenae CGMCC5329 is a useful biological control agent against plant-parasitic nematodes. The complete mitogenome sequence of L. saksenae is reported for the first time. The mitochondrial genome is 25 919 bp long with 14 typical protein-coding genes, an intronic ORF coding for a putative ribosomal protein (rps3), 2 ribosomal RNA genes and a set of 26 transfer RNA genes. The phylogeny based on 12 protein-coding genes (except the loss of other two genes in Acremonium implicatum) suggests the close phylogenetic relationship between L. saksenae and L. muscarium. Comparative analysis reveals that mitogenome of L. saksenae is 1420 bp larger than L. muscarium, mainly due to the intergenic region between cox2 and trnR. The trnC between cob and cox1 is conserved in the mitogenomes of three nematophagous fungus of Pochonia chlamydosporia, A. implicatum and L. saksenae, but absent in L. muscarium. This study may provide valuable information for further research on mitochondrial evolution of nematophagous fungus and Lecanicillium species.
Acknowledgements
Authors are grateful to Professor Xia Wu at Qingdao Agricultural University for the kind gift of the strain that was isolated from eggs of Meloidogyne incognita infecting sponge gourd in Chengyang, Qingdao City, Shandong Province, PR China (latitude: 36.11 N, longitude: 120.07 E), Professor Kui Lin at Beijing Normal University for providing the computer platform for genome assembly.
This work was supported by the National Natural Science Foundation of China (31371923), China Agriculture Research System (CARS-25-B-01), and the Science and Technology Innovation Program of the Chinese Academy of Agricultural Sciences (CAAS-ASTIP-IVFCAAS).