Brevibacillus borstelensis and Streptomyces albogriseolus have roles to play in degradation of herbicide, sulfosulfuron

Abstract

Use of herbicides, in particular sulfosulfuron, at more than recommended doses has raised major concerns about the health hazards for animals and humans. In the present study, isolation of sulfosulfuron-degrading Brevibacillus borstelensis and Streptomyces albogriseolus from the field soils in the northwestern region of India was carried out where the use of sulfosulfuron is predominant, and further assessed for their potential to degrade sulfosulfuron individually and together in a consortium form under lab conditions. Concentration of sulfosulfuron was reduced from 10 to 7.72 µg/ml in 12 h to 5.13 µg/ml in 20 h by B. borstelensis and the metabolites detected by LCMS–MS were aminopyrimidine and a rearranged amine in 12 and 20 h of growth. Similarly, S. albogriseolus reduced the concentration of sulfosulfuron from 10 to 6.74 µg/ml in 12 h to 6.62 µg/ml in 20 h with aminopyrimidine and a rearranged amine as metabolites. B. borstelensis and S. albogriseolus together also reduced the concentration of sulfosulfuron from 10 µg/ml in initial hour to 8.34 µg/ml in 12 h to 6.66 µg/ml in 20 h. Hence, B. borstelensis and S. albogriseolus provide a safer, inexpensive and effective way to bio-remediate the harmful and toxic sulfosulfuron from the environment if further explored at a larger field scale in near future.

Seed interior microbiome of rice genotypes indigenous to three agroecosystems of Indo-Burma biodiversity hotspot

“…Brevibacillus borstelensis is a thermophilic bacteria and was isolated from Kalajoha with a similarity of 100%. It was found previously in, ’Marcha’- a herbal cake used as traditional starter culture to ferment local wine in north-east India and rhizosphere of wheat from northern region of India [25, 26]. But it has not been earlier reported as an endophyte of rice.…”

Application Timing and Degradation Rate of Sulfosulfuron in Soil Co-affect Control Efficacy of Egyptian broomrape (Phelipanche aegyptiaca) in Tomato

“…The soils used for this study have similar pH levels (7.6 to 7.8) at which chemical hydrolysis is slow and degradation is largely due to microbial breakdown (Beyer et al 1988). Recent studies reported on the isolation of different sulfosulfuron-degrading microorganisms (Arya et al 2016; Yadav and Choudhury 2014). It is thus most likely that differences in the biodegradation rate of sulfosulfuron are the cause for varied degradation rates and residual activity recorded in the current study (Figures 1 and 2).…”

Co-culture of the Potential First Reported Streptomyces flavalbus of Sonneratia alba from Ujung Piring, Jepara, Indonesia

“…Some research in relation to the co-culture was also conducted on Streptomyces albogriseolus with Brevibacillus borstelensis from the eld soils in the northwestern region of India. The Actinobacteria was managed to reduce the concentration of sulfosulfuron from 10 g/ml in an initial hour from 8.34 g/ml in 12 h to 6.66 g/ml in 20 h (Arya et al 2016). However, there has been no research on co-culture with Streptomyces albogriseolus as an antibacterial.…”