KOBV Portal

Hits per page

hit 1 - 1 | 1 hit

Select All Export

Online Resource

The impact of newly synthesized sulfonamides on soil microbial population and respiration in rhizospheric soil of wheat (Triticum aestivum L.)

Saleem, Ammara ; Zulfiqar, Asma ; Arshed, Muhammad Zeeshan ; [et al.]

Public Library of Science (PLoS) ; 2022

In: PLOS ONE Vol. 17, No. 4 ( 2022-4-28), p. e0264476-

add to watchlist on the watchlist

Details

In: PLOS ONE, Public Library of Science (PLoS), Vol. 17, No. 4 ( 2022-4-28), p. e0264476-

Abstract: Antibiotics released into agricultural fields through the manure of grazing animals could exert harmful impacts on soil microbes and plants. Antibiotics exert high impacts on environment than other pharmaceuticals due to their higher biological activity. However, little is known about their impacts on plants, despite indications that antibiotics exert negative effects on soil microorganisms, which ultimately harm the plants. It has been demonstrated that beneficial microorganisms promote plant growth and development under various stresses. This study evaluated the toxicity of four newly derived sulfonamides (SAs), i.e., 2-(phenylsulfonyl) hydrazine carbothioamide (TSBS-1), N, 2-bis phenyl hydrazine carbothioamide (TSBS-2), aminocarbonyl benzene sulfonamide (UBS-1), and N, N’-carbonyl dibenzene sulfonamide (UBS-2) on bacterial growth and soil microbial respiration. Each SA was tested at four different concentrations (i.e., 2.25, 2.5, 3, 4 mg/ml) against five rhizospheric bacterial strains, including AC ( Actinobacteria sp .), RS-3a ( Bacillus sp .), RS-7a ( Bacillus subtilis ), RS-4a ( Enterobacter sp .), and RS-5a ( Enterobacter sp .). Antimicrobial activity was checked by disc diffusion method, which showed that inhibition zone increased with increasing concentration of SAs. The UBS-1 resulted in the highest inhibition zone (11.47 ± 0.90 mm) against RS-4a with the highest concentration (4 mg/ml). Except TSBS-1, all sulfonamide derivatives reduced CO 2 respiration rates in soil. Soil respiration values significantly increased till 6 th day; however, exposure of sulfonamide derivatives suppressed microbial respiration after 6 th day. On the 20 th day, poor respiration activity was noted at 0.23, 0.2, and 0.4 (CO 2 mg/g dry soil) for TSBS-1, UBS-1, and UBS-2, respectively. Our results demonstrate that sulfonamides, even in small concentrations, significantly affect soil microbial population and respiration. Soil microbial respiration changes mediated by sulfonamides were dependent on length of exposure and concentration. It is recommended that antibiotics should be carefully watched and their impact on plant growth should be tested in the future studies.

Type of Medium: Online Resource

ISSN: 1932-6203

URL: Article