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首页> 美国卫生研究院文献>Elsevier Sponsored Documents >Soil sand content can alter effects of different taxa of mycorrhizal fungi on plant biomass production of grassland species
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Soil sand content can alter effects of different taxa of mycorrhizal fungi on plant biomass production of grassland species

机译：土壤含沙量可以改变菌根真菌不同分类群对草地植物生物量生产的影响

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摘要

In this greenhouse experiment we tested whether (i) ubiquitous arbuscular mycorrhizal fungi (AMF) taxa (Glomus claroideum, Glomus geosporum, Glomus intraradices, Glomus mosseae) singly and in a mixture differently affect growth and biomass production of four co-occurring grassland species (grass: Arrhenatherum elatius, non-leguminous forbs: Plantago lanceolata, Salvia pratensis and leguminous forb Trifolium pratense), and (ii) different soil sand contents alter AMF influence. We hypothesized that AMF effects on plants will increase with an increased AMF diversity and with increasing sand content. Percent AMF colonization of roots differed between plant species and AMF taxa and was higher with higher sand content. Plant growth responses to AMF were species-specific both regarding plants and AMF. Generally, biomass production of the non-leguminous forbs was the most responsive, the grass species the least and the legume intermediate both for AMF treatments and sand content. Across species, AMF influence on plant biomass increased with increasing soil sand content. Plant species growing in soil containing a mix of four AMF taxa showed similar growth responses than species in soil containing only one AMF taxon. These results suggest that both interference among AMF taxa and soil sand content can trigger the influence of AMF on plant production in grassland species.
机译：在这个温室实验中，我们测试了（i）普遍存在的丛枝菌根真菌（AMF）种类（螯虾（Glomus claroideum。草：大叶鸢尾，非豆科植物的针叶：车前草，丹参和豆科植物的三叶草，以及（ii）不同的土壤沙含量会改变AMF的影响。我们假设，AMF对植物的影响将随着AMF多样性的增加和沙含量的增加而增加。根的AMF定植百分比在植物种类和AMF分类群之间是不同的，并且随着含沙量的增加而更高。关于AMF的植物生长反应对于植物和AMF都是物种特异性的。通常，用于AMF处理和含砂量的非豆科植物的生物量生产响应最快，草种最少，豆类中间产物。在整个物种中，AMF对植物生物量的影响随着土壤沙含量的增加而增加。在包含四种AMF分类群的土壤中生长的植物物种与仅包含一种AMF分类群的土壤中的植物具有相似的生长响应。这些结果表明，AMF分类群之间的干扰和土壤含沙量都可以触发AMF对草原物种植物生产的影响。

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