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Bacillus cereus WL08 immobilized on tobacco stem charcoal eliminates butylated hydroxytoluene in soils and alleviates the continuous cropping obstacle of Pinellia ternata

文献类型： 外文期刊

作者： Zhang, Cheng 1 ; Zhang, Qinghai 1 ; Luo, Ming 3 ; Wang, Qiuping 2 ; Wu, Xiaomao 2 ;

作者机构： 1.Guizhou Med Univ, Sch Publ Hlth, Key Lab Environm Pollut Monitoring & Dis, Minist Educ, Guiyang 550025, Peoples R China

2.Guizhou Univ, Inst Crop Protect, Coll Agr, Guiyang 550025, Guizhou, Peoples R China

3.Guizhou Acad Agr Sci, Inst Modern Chinese Herbal Med, Inst Crop Germplasm Resources, Guiyang 550025, Peoples R China

4.Guizhou Vocat Coll Agr, Dept Food & Med, Qingzhen 551400, Guizhou, Peoples R China

关键词： Butylated hydroxytoluene; Degradation; Allelochemical; Immobilization; Pinellia ternata

期刊名称：JOURNAL OF HAZARDOUS MATERIALS （ 影响因子：13.6； 五年影响因子：12.7 ）

ISSN： 0304-3894

年卷期： 2023 年 450 卷

页码：

收录情况： SCI

摘要： Butylated hydroxytoluene (BHT), as an emerging contaminant in ecosystems, has potential influences on animals, aquatic organisms, and public health, and has been proven to be a major allelochemical of Pinellia ternata. In this study, Bacillus cereus WL08 was used to rapidly degrade BHT in liquid culture. Strain WL08 immobilized on tobacco stem charcoal (TSC) particles notably accelerated BHT removal in contract to its free cells, and exhibited excellent reutilization and storage capacities. The optimal removal parameters of TSC WL08 were ascertained to be pH 7.0, 30 degrees C, 50 mg L-1 BHT and 0.14 mg L-1 TSC WL08. Moreover, TSC WL08 significantly accelerated the degradation of 50 mg L-1 BHT in sterile and non-sterile soils compared to that of free WL08 or natural dissipation, and notably shortened their half-lives by 2.47-or 362.14-fold, and 2.20-or 14.99-fold, respectively. Simultaneously, TSC WL08 was introduced into the continuous cropping soils of P. ternata, which accelerated the elimination of allelochemical BHT, and notably enhanced the photosynthesis, growth, yield, and quality of P. ternata. This study provides new insights and strategies for the rapid in situ remediation of BHT polluted soils and effective alleviation of P. ternata cropping obstacles.

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