Two Arbuscular Mycorrhizal Fungi Colonizing Maize Under Different Phosphorus Regimes in a Compartment Cultivation System

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Two Arbuscular Mycorrhizal Fungi Colonizing Maize Under Different Phosphorus Regimes in a Compartment Cultivation System

机译：隔室栽培体系中不同磷环境下玉米定殖的两种丛枝菌根真菌

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摘要

A modified glass bead compartment cultivation system was used to compare some chemical and biolog-ical properties of the two arbuscular mycorrhizal (AM) fungi Glomus mosseae and Glomus versiforme usingmaize (Zea mays) as the host plant with four added levels of available phosphorus (P). The proportion ofhost plant root length infected was determined at harvest. Shoot and root yields and nutrient concentra-tions were determined, together with the nutrient concentrations in the AM fungal external mycelium. Themorphology of various mycorrhizal structures of the two AM fungi was also compared by microscopic obser-vation. Inoculation with G. mosseae gave higher plant yields than that with G. versghrme, and the two fungiresponded differently in infection rate to areilable phosphorus level. Root infection rate of mycorrhizal maizecolonized by G. mosseae decreased markedly with increasing P level, and there was very poor developmentof the extraradical mpcelium at the highest rate of P

机译：A modified glass bead compartment cultivation system was used to compare some chemical and biological properties of the two arbuscular mycorrhizal (AM) fungi Glomus mosseae and Glomus versiforme using maize (Zea mays) as the host plant with four added levels of available phosphorus (P). The proportion of host plant root length infected was determined at harvest. Shoot and root yields and nutrient concentrations were determined, together with the nutrient concentrations in the AM fungal external mycelium. The morphology of various mycorrhizal structures of the two AM fungi was also compared by microscopic observation. Inoculation with G. mosseae gave higher plant yields than that with G. versiforme, and the two fungi responded differently in infection rate to available phosphorus level. Root infection rate of mycorrhizal maize colonized by G. mosseae decreased markedly with increasing P level, and there was very poor development of the extraradical mycelium at the highest rate of P addition. In contrast, G. versiforme showed greater tolerance to increasing P level. Elemental analysis showed that phosphorus, copper and zinc concentrations in the external mycelium differed between the two fungi and were much higher than those in the host plant.Differences in the morphology of the two fungi were also observed.

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《土壤圈（英文版）》 |2002年第2期|121-130|共10页
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作者单位

Department of Plant Nutrition College of Agricultural Resources and Environmental Sciences China Agricultural University Beijing 100094 China;

Department of Agricultural and Environmental Science The Queen's University of Belfast Newforge Lane Belfast BT9 5PX (UK);

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收录信息中国科学引文数据库(CSCD);
原文格式 PDF
正文语种 chi
中图分类土壤污染及其防治;
关键词
arbuscular mycorrhizal fungi; copper; maize; phosphorus; zinc;

机译：丛枝菌根真菌铜;玉米;磷;锌;

Two Arbuscular Mycorrhizal Fungi Colonizing Maize Under Different Phosphorus Regimes in a Compartment Cultivation System

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