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首页> 外文期刊>Plant and Soil >Nurse effects mediated by acid-tolerance of target species and arbuscular mycorrhizal colonization in an acid soil
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Nurse effects mediated by acid-tolerance of target species and arbuscular mycorrhizal colonization in an acid soil

机译：护士效应抗酸性耐酸性和酸性土壤中的丛枝菌根殖民化

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摘要

Aims We tested whether a nurse-plant effect depends on target-seedling tolerance to soil acidity and arbuscular mycorrhizal fungi (AMF) in an acid soil. Methods A mesocosm experiment was used to assess the acid-tolerance of the seedlings of four target species. Field experiment 1 tested the nurse effects of an adult plant (Lespedeza formosa) on germination rate, seedling survival rate, growth and AMF colonization rate of target seedlings growing in an acid soil. Field experiment 2 tested the influence of AMF root colonization on nurse-plant effects. Results Target species greatly varied in their tolerance to soil acidity while nurse-effect on target species were mediated by target species acid-tolerance and AMF root colonization. In field experiment 1, as expected, nurse-effect was positive for acid-sensitive species and negative for acid-tolerant species. While nurse plant presence facilitated the germination, survival, growth, and AMF colonization of the two acid-sensitive species it competed with the two acid-tolerant species. In field experiment 2, the nurse plant facilitated the growth of the acid-sensitive seedlings more under AMF not suppressed treatment than AMF suppressed treatment. For the acid-tolerant seedlings, however, the nurse plant reduced their growth under AMF not suppressed treatment, but did not affect their growth under AMF suppressed treatment. Conclusion Nurse plant facilitated the acid-sensitive species in an acid soil, and the facilitation was enhanced by increasing AMF in the soil. These findings highlight how acid-tolerance of target species and AMF colonization mediates nurse plant facilitation and has important implications for the use of nurse plants in the restoration of acid soils ecosystems.
机译：目的我们测试了护士植物效果是否取决于酸土中对土壤酸度和丛枝菌根真菌（AMF）的靶幼苗耐受性。方法采用中核试验评估四种靶种类幼苗的耐酸性。现场实验1测试了成年植物（Lespedeza Formosa）对酸性土壤生长的萌发率，幼苗存活率，生长和AMF定植率的护士效应。田间实验2测试了AMF根殖民化对护士植物效应的影响。结果靶物种在其对土壤酸度的耐受性中大大变化，而通过靶物种酸耐受和AMF根定子介导的护士效应。在现场实验1中，正如预期的那样，护士效应对于酸性敏感物种和耐酸性物种的阴性是阳性的。虽然护士植物的存在促进了与两种耐酸物种竞争的两种酸敏感物种的萌发，存活率，生长和AMF定植。在田间实验2中，护士植物促进了酸敏感幼苗的生长，而不是抑制治疗的AMF不抑制治疗。然而，对于耐酸性幼苗，护士植物在AMF下的增长降低了不抑制治疗，但在AMF抑制治疗下没有影响它们的增长。结论护士植物促进了酸性土壤中的酸敏感物种，并通过增加土壤中的AMF来增强促进剂。这些发现强调了目标物种和AMF殖民化的耐脂性如何调解护士植物便利化，并对使用护士植物进行耐酸土壤生态系统的耐药性具有重要意义。

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  • 来源
    《Plant and Soil》 |2019年第2期|共12页
  • 作者

    He Lei; Xu Jing; Hu Liangliang; Ren Minglei; Tang Jianjun; Chen Xin;

  • 作者单位

    Zhejiang Univ Coll Life Sci 866 Yuhangtang Rd Hangzhou 310058 Zhejiang Peoples R China;

    Zhejiang Univ Coll Life Sci 866 Yuhangtang Rd Hangzhou 310058 Zhejiang Peoples R China;

    Zhejiang Univ Coll Life Sci 866 Yuhangtang Rd Hangzhou 310058 Zhejiang Peoples R China;

    Zhejiang Univ Coll Life Sci 866 Yuhangtang Rd Hangzhou 310058 Zhejiang Peoples R China;

    Zhejiang Univ Coll Life Sci 866 Yuhangtang Rd Hangzhou 310058 Zhejiang Peoples R China;

    Zhejiang Univ Coll Life Sci 866 Yuhangtang Rd Hangzhou 310058 Zhejiang Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 土壤学;
  • 关键词

    Acid soil; Arbuscular mycorrhizal fungi; Facilitation; Nurse effect; Seedling growth; Stress tolerance;

    机译：酸性土壤;丛枝菌根真菌;便利;护士效果;幼苗生长;压力耐受性;

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