Phosphorus availability influences elemental uptake in the mycorrhizal fungus Glomus intraradices, as revealed by particle-induced X-ray emission analysis

被引：36

作者：

Olsson, Pal Axel ^{[1
]}

Hammer, Edith C. ^{[2
]}

Wallander, Hakan ^{[2
]}

Pallon, Jan ^{[3
]}

机构：

[1] Lund Univ, Dept Plant Ecol & Systemat, SE-22362 Lund, Sweden

[2] Lund Univ, Dept Microbial Ecol, SE-22362 Lund, Sweden

[3] Lund Univ, Dept Nucl Phys, SE-22362 Lund, Sweden

来源：

APPLIED AND ENVIRONMENTAL MICROBIOLOGY | 2008年 / 74卷 / 13期

关键词：

D O I：

10.1128/AEM.00376-08

中图分类号：

Q81 [生物工程学（生物技术）]; Q93 [微生物学];

学科分类号：

071005 ; 0836 ; 090102 ; 100705 ;

摘要：

We investigated element accumulation in the arbuscular mycorrhizal fungus Glomus intraradices. Fungal spores and mycelia growing in monoxenic cultures were analyzed. The elemental composition was quantified using particle-induced X-ray emission (PIXE) in combination with scanning transmission ion microscopy. In the spores, Ca and Fe were associated mainly with the spore wall, while P and K showed patchy distributions and their concentrations were correlated. Excess of P in the hyphal growth medium increased the P and Si concentrations in spores and increased the K/Ca ratio in spores. Increased P availability decreased the concentration of Zn and Mn in spores. We concluded that the availability of P influences the uptake and accumulation of several elements in spores. It is demonstrated that PIXE analysis is a powerful tool for quantitative analysis of elemental accumulation in fungal mycelia.

引用

页码：4144 / 4148

页数：5

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