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Potential role of organic matter in the transmission of antibiotic resistance genes in black soils


編輯:2022-10-27 14:19:08

The degradation of black soil is a serious problem with the decrease in soil organic matter (SOM) content in northeast China, and animal manure as a reservoir of antibiotic resistance genes (ARGs) is commonly amended into soil to sustain or increase the SOM content. However, the potential effect of SOM content on soil resistome remains unclear. Here, a soil microcosm experiment was established to explore the temporal succession of antibiotic resistance genes (ARGs) and bacterial communities in three black soils with distinct difference in SOM contents following application of poultry manure using high-throughput qPCR (HT-qPCR) and MiSeq sequencing. A total of 151 ARGs and 8 mobile genetic elements (MGEs) were detected across all samples. Relative abundance of ARGs negatively correlated with SOM content. Manure-derived ARGs had much higher diversity and absolute abundance in the low SOM soils. The ARG composition and bacterial community structure were significantly different in three soils. A random forest model showed that SOM content was a better predictor of ARG pattern than bacterial diversity and abundance. Structural equation modeling indicated that the negative effects of SOM content on ARG patterns was accomplished by the shift of bacterial communities such as the bacterial diversity and abundance. Our study demonstrated that SOM content could play an important role in the dissemination of ARGs originated from animal manures, these findings provide a possible strategy for the suppression of the spread of ARGs in black soils by increasing SOM content.


刊物名稱:Ecotoxicology and Environmental Safety

?參與作者:S. Li, J. J. Liu, Q. Yao, Z. H. Yu, Y. S. Li, J. Jin, X. B. Liu and G. H. Wang

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聯(lián)系人:張曉平
聯(lián)系電話:0431-85542234? 85542357
Email:zhangxiaoping@neigae.ac.cn
地址:高新北區(qū)長(zhǎng)東北高科技中心A區(qū)412室

? ? ? ?如果我們敢想,勇于接受新觀念,樂(lè)于同我們的土壤合作而不是濫用它,我們將會(huì)看到保護(hù)性農(nóng)業(yè)是引導(dǎo)我們走向前所未見(jiàn)的高產(chǎn)農(nóng)業(yè)的有效途徑。這不僅是為了戰(zhàn)爭(zhēng)時(shí)期,更是為了戰(zhàn)后的和平年代
?(Hugh?Hammond Bennett,?1943)
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聯(lián)系我們

聯(lián)系人:張曉平
聯(lián)系電話:0431-85542234? 85542357
Email:zhangxiaoping@neigae.ac.cn
地址:高新北區(qū)長(zhǎng)東北高科技中心A區(qū)412室
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?2022 長(zhǎng)春中科東地農(nóng)業(yè)機(jī)械裝備有限公司 備案號(hào):吉ICP備2022007635號(hào)?技術(shù)支持:龍采科技集團(tuán)