
Agriculture, Год журнала: 2025, Номер 15(11), С. 1116 - 1116
Опубликована: Май 22, 2025
The present study investigated the combined effects of wheat straw biochar (BC) and biosurfactant rhamnolipid (RL) on biodegradation kinetics phenanthrene by indigenous microorganisms in agricultural soil, focusing dynamic responses both bioavailability community structure. treatment (BC + RL, 60.63%) significantly enhanced compared to RL alone (54.74%) control (45.98%), while BC amendment (42.55%) notably inhibited reducing despite increasing bacterial abundance, enzyme activity, diversity. Both treatments promoted transforming from tightly bound (very slowly desorbing fraction, Fvslow) readily bioavailable fractions (rapidly fractions, Frapid Fslow), as revealed sequential Tenax extraction. RL-mediated increase microbes 11.93–17.90% via solubilization greatly enriched PAH-degrading genera nidA gene, contributing biodegradation. combination outperformed single application improving due their synergy stimulating microbial population activity (e.g., Bacillus, Massilia, Sphingomonas, polyphenol oxidase) a growth stimulus. These findings demonstrate that co-application enhances PAH removal through improved optimized communities, offering promising strategy for soil bioremediation ensure product safety.
Язык: Английский