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首页> 外文期刊>Journal of arid environments >Analyzing the community composition of arbuscular mycorrhizal fungi colonizing the roots of representative shrubland species in a Mediterranean ecosystem
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Analyzing the community composition of arbuscular mycorrhizal fungi colonizing the roots of representative shrubland species in a Mediterranean ecosystem

机译：分析在地中海生态系统中定居于灌木丛物种根系的丛枝菌根真菌的群落组成

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摘要

Community composition of arbuscular mycorrhizal (AM) fungi was analyzed in the roots of five representative shrub species (Genista cinerea, Lavandula latifolia, Rosmarinus officinalis, Thymus mastichina and Thymus zygis) growing in a typical semi-arid Mediterranean ecosystem. Roots from a well-preserved area of the ecosystem were extracted from soil and analyzed by nested PCR, single strand conformation polymorphism and sequencing of the NS31-AM1 and NS8-ARCH1311 regions of the small subunit of the ribosomal DNA (SSU rDNA). Ten AM fungal phylotypes were identified; eight belonged to the Glomeraceae and two to the Diversisporaceae. Only two of the phylotypes clustered with sequences of morphologically defined species and a high dominance by one AM group (Glomus intraradices) was detected. Our diversity analyses revealed that the AM fungal communities of C. cinerea, L latifolia and T. mastichina did not significantly differ while the AM fungal communities of R. officinalis and T. zygis were distant from this cluster and from each other. The highest diversity was found in the roots of T. zygis. Our data indicate that co-occurring plant species may house distinct communities of AM fungi.
机译：分析了在典型的半干旱地中海生态系统中生长的五个代表性灌木物种（黄ista（Genista cinerea），薰衣草（Lavandula latifolia），迷迭香（Rosmarinus officinalis），百里香（Thymus mastichina）和百里香（Thymus zygis））的根中，丛枝菌根（AM）真菌的群落组成。从土壤中保存完好的生态系统中提取根，并通过巢式PCR，单链构象多态性和核糖体DNA小亚基（SSU rDNA）NS31-AM1和NS8-ARCH1311区域的测序进行分析。确定了十种AM真菌系统型。其中8个属于豆科，另外2个属于Diversisporaceae。仅检测到两种形态学，它们聚集了形态学上确定的物种序列，并且被一个AM组（Glomus intraradices）具有较高的优势。我们的多样性分析表明，灰黄曲霉，阔叶落叶松和印度乳杆菌的AM真菌群落没有显着差异，而R. officinalis和T. zygis的AM真菌群落则彼此远离。发现最高的多样性是在T.zygis的根中。我们的数据表明，同时存在的植物物种可能包含AM真菌的不同群落。

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  • 来源
    《Journal of arid environments》 |2012年第5期|p.1-9|共9页
  • 作者

    I. Sanchez-Castro; N. Ferrol; J.M. Barea;

  • 作者单位

    Departamento de Microbiologia del Suelo y Sistemas Simbiotkos, Estacion Experimental del Zaidin, CSIC. Profesor Albareda 1, 18008 Granada, Spain;

    Departamento de Microbiologia del Suelo y Sistemas Simbiotkos, Estacion Experimental del Zaidin, CSIC. Profesor Albareda 1, 18008 Granada, Spain;

    Departamento de Microbiologia del Suelo y Sistemas Simbiotkos, Estacion Experimental del Zaidin, CSIC. Profesor Albareda 1, 18008 Granada, Spain;

  • 收录信息 美国《科学引文索引》(SCI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    arbuscular mycorrhizal fungi; mediterranean ecosystems; sequence diversity; SSCP; SSU Rdna;

    机译：丛枝菌根真菌地中海生态系统;序列多样性;SSCP;SSU Rdna;

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