| 李夏，霍志铭，黄连喜，何兆桓，周昌敏，姚丽贤.土壤细菌群落多样性对鸡粪中洛克沙胂代谢物的响应[J].广东农业科学,2014,41(15):56-60 |
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土壤细菌群落多样性对鸡粪中洛克沙胂代谢物的响应 |
| Effects of Roxarsone and its metabolites on the bacterial community diversity in lateritic red soil |
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| DOI： |
| 中文关键词: 洛克沙胂 砷形态 赤红壤 群落多样性 PCR-DGGE |
| 英文关键词: Roxarsone Arsenic speciation lateritic red soil community diversity PCR-DGGE |
| 基金项目:国家自然科学基金（41071316，40871226）；广东省自然科学基金（10151064001000010） |
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| 中文摘要: |
| 研究施用含饲料添加剂洛克沙胂（ROX）代谢物的鸡粪对土壤细菌群落结构的影响遥结果表明：土壤中相对含量较高的As（Ⅴ）与细菌Shannon-Weiner指数存在较低的负相关关系，低含量DMA与细菌Shannon-Weiner指数存在较低的正相关性关系，低含量As（Ⅲ）与细菌Shannon-Weiner指数无明显的相关性。在相同培养时间段土壤的细菌群落结构相近性较高，且未表现出对土壤砷形态含量差异的响应。在60d培养期内，土壤细菌群落多样性随着土壤中各种砷化物含量的变化而相应变化，主要受含量较高的As（Ⅴ）与毒性较强的As（Ⅴ）的影响，但全程细菌Shannon-Weiner指数的变化并未表现出明显的ROX添加量的浓度差异效应。 |
| 英文摘要: |
| The study is to understand the effects of metabolites of roxarsone (ROX) on the bacterial community diversity. The results showed that there was weak negative correlation between As (Ⅴ) and Shannon index of bacteria, weak positive correlation between DMA and Shannon index of bacteria, no significant correlation between As (Ⅲ) and Shannon index of bacteria. Similarity analysis of bacterial communities in all processed soils showed that bacterial community structure similarity was relatively high in the same incubation time but no response to different content of three As speciations detected in this study. Soil microbial diversity was mainly affected by high content of As (Ⅴ) and the more toxic As (Ⅲ), especially in the mid-term during 60 days culture period. The changes of Shannon-Weiner index of bacteria
did not show a significant effect at the concentrations of addition of ROX. |
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