Potential biocontrol mechanisms of Bacillus sp. TSO2 against Bipolaris sorokiniana, spot blotch in wheat

Valeria Valenzuela-Ruiz, Fannie I. Parra-Cota, Gustavo Santoyo, Sergio de los Santos-Villalobos

Abstract


Bipolaris sorokiniana is a pathogen of cereals such as wheat and barley, causing root rot, leaf blight, seedling blight, and spot blotch. This phytopathogen causes a considerable reduction in cereal yield of up to 85%. Thus, sustainable alternatives to the application of synthetic fungicides are determinants for the control of phytopathogens, such as the application of biological control agents. This study aims to identify the potential biocontrol mechanisms of the bacterial strain TSO2 by sequencing, annotation, and mining its genome. The draft genome of strain TSO2 was sequenced through the Illumina Miseq platform and presented 4,242,212 bp, 43.9% G+C content, 300,069 bp N50, 5 L50, 47 contigs, 96 RNAs, and 4,432 predicted coding DNA sequences. Besides, the presence of 86 CDS of agricultural importance involved in virulence, disease, defense, iron acquisition, and secondary and phosphate metabolisms was detected. On the other hand, seven putative secondary metabolite gene clusters involved in biocontrol activity were identified in the genome of strain TSO2. Bacillus sp. TSO2 contains a great number of biosynthetic gene clusters which supports its biocontrol activity against phytopathogenic fungi. Thus, this strain needs to be further studied as a potential bioactive ingredient for the biopesticide formulation due to its high potential as a biological control agent.


Keywords


Agentes de control biológico; genómica; antiSmash; biofungicida; agricultura sostenible

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References


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DOI: http://dx.doi.org/10.18781/R.MEX.FIT.2201-1

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