Phthalate Esters Metabolic Strain Gordonia sp. GZ-YC7, a Potential Soil Degrader for High Concentration Di-(2-ethylhexyl) Phthalate.

Phthalate Esters Metabolic Strain Gordonia sp. GZ-YC7, a Potential Soil Degrader for High Concentration Di-(2-ethylhexyl) Phthalate.
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邻苯二甲酸酯代谢菌株戈登氏菌GZ - YC7,一种潜在的可降解高浓度邻苯二甲酸二(2 - 乙基己基)酯的土壤降解菌

DOI:
10.3390/microorganisms10030641
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发表时间:
2022-03-17
期刊:
影响因子:
4.5
通讯作者:
Zhong W
Zhong W
中科院分区:
生物学3区
文献类型:
--
作者:
Hu T;Yang C;Hou Z;Liu T;Mei X;Zheng L;Zhong W

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邻苯二甲酸酯作为塑料制品中常用的化学增塑剂,在地膜栽培土壤中已成为一种普遍存在的严重环境污染物。微生物降解或转化被认为是解决邻苯二甲酸酯污染的合适策略。因此,一株新的邻苯二甲酸酯降解菌Gordonia sp.GZ-YC7菌株在1000 mg/L浓度下对邻苯二甲酸二(2-乙基己基)酯的降解率最高,对4000 mg/L的耐受性最强。比较基因组分析结果表明,大头藻对邻苯二甲酸二(2-乙基己基)酯和邻苯二甲酸二丁酯存在不同的酯酶。GZ-YC7。这一基因组特征可能是其底物谱广、降解效率高、对邻苯二甲酸酯耐受性高的原因之一。戈登藻属Gordonia sp.GZ-YC7在污染土壤环境中邻苯二甲酸酯的生物修复方面具有潜在的应用前景。
As commonly used chemical plasticizers in plastic products, phthalate esters have become a serious ubiquitous environmental pollutant, such as in soil of plastic film mulch culture. Microbial degradation or transformation was regarded as a suitable strategy to solve the phthalate esters pollution. Thus, a new phthalate esters degrading strain Gordonia sp. GZ-YC7 was isolated in this study, which exhibited the highest di-(2-ethylhexyl) phthalate degradation efficiency under 1000 mg/L and the strongest tolerance to 4000 mg/L. The comparative genomic analysis results showed that there exist diverse esterases for various phthalate esters such as di-(2-ethylhexyl) phthalate and dibutyl phthalate in Gordonia sp. GZ-YC7. This genome characteristic possibly contributes to its broad substrate spectrum, high degrading efficiency, and high tolerance to phthalate esters. Gordonia sp. GZ-YC7 has potential for the bioremediation of phthalate esters in polluted soil environments.
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