陕南枳雀砧和枳砧温州蜜柑根系微生物群落比较

发布时间：2018-06-19 05:54

本文选题：枳雀 + 枳　；参考：《中国南方果树》2017年06期

【摘要】：为了探讨枳雀Citrus wilsonii耐缺铁的原因,在陕西城固县同一温州蜜柑园中取样后,采用高通量测序技术比较分析了枳雀砧与枳砧根系(根际土与根内)微生物群落,及微生物在枳雀耐缺铁中的可能作用。结果表明,两种砧木根际土中微生物数量均显著大于根内;枳雀根际和根内的微生物多样性与枳无显著性差异;两种砧木根系微生物主要属于变形菌门和放线菌门;在两种砧木根系之间相对丰度差异显著的微生物共16个属,其中11个属在枳雀中的相对丰度显著高于枳,另5个属则相反。在枳雀中相对丰度高于枳的微生物属,主要是与铁吸收相关的微生物如产高铁载体菌、根瘤菌、矿物风化菌、耐高盐碱菌,可能与枳雀耐缺铁有关。
[Abstract]:In order to investigate the causes of iron deficiency in Citrus wilsonii, the microbial communities in roots (rhizosphere soil and root) of Citrus wilsonii were compared with those of Trifoliate trifoliate rootstock (rhizosphere soil and root) by high-throughput sequencing technique after sampling in the same satsuma mandarin orchard in Chenggu County, Shaanxi Province. And the possible role of microorganisms in iron tolerance of trifoliate (Trifoliate trifoliate). The results showed that the number of microorganism in rhizosphere soil of two rootstocks was significantly larger than that in root, the diversity of microorganism in rhizosphere and rhizosphere of trifoliate was not significantly different from that in Trifoliate trifoliate, and the root microbes of two rootstocks were mainly Proteus and actinomycetes. There were 16 genera of microbes with significant difference in relative abundance between roots of two rootstocks, of which 11 genera were significantly higher than those of trifoliate orange in 11 genera, and the other 5 genera were opposite. The relative abundance in trifoliate is higher than that in trifoliate orange, which is mainly related to iron absorption, such as ferric ferric-producing carrier bacteria, rhizobia, weathering bacteria and high-saline-tolerant bacteria, which may be related to iron tolerance of trifoliate trifoliates.
【作者单位】：华中农业大学园艺植物生物学教育部重点实验室;
【基金】：国家自然科学基金项目(31471841;31521092) 华中农业大学自主科技创新基金(2662015PY061)资助
【分类号】：S154.3;S666

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