THE DEVELOPMENT OF ENDOMYCORRHIZAL ROOT SYSTEMS. IV. THE MATHEMATICAL ANALYSIS OF EFFECTS OF PHOSPHORUS ON THE SPREAD OF VESICULAR-ARBUSCULAR MYCORRHIZAL INFECTION IN ROOT SYSTEMS
THE DEVELOPMENT OF ENDOMYCORRHIZAL ROOT SYSTEMS. IV. THE MATHEMATICAL ANALYSIS OF EFFECTS OF PHOSPHORUS ON THE SPREAD OF VESICULAR-ARBUSCULAR MYCORRHIZAL INFECTION IN ROOT SYSTEMS
复制标题
内菌根根系统的发育。
DOI：
10.1111/j.1469-8137.1982.tb03396.x
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发表时间：
1982
期刊：
影响因子：
9.4
通讯作者：
P. Tinker
中科院分区：
文献类型：
--
作者：
J. Buwalda;G. J. Ross;D. P. Stribley;P. Tinker
先前提出的泡囊丛枝菌根感染根的模型（Buwaldaet al.，1982），用于研究磷对根系中感染传播的影响。两个主机，菌根感染（小麦和韭菜）的对比反应，生长在一系列的磷水平，和连续测量的生长和磷浓度的植物，和根的感染，进行了。土壤中磷含量的增加增加了植物中磷的浓度，并降低了两种宿主中受感染根长的百分比，但在小麦中的影响更大。拟合模型表明，真菌的固有传播速度并没有显着改变磷的应用。然而，根系的最大比例，可能成为感染减少，特别是在小麦。这一发现对我们理解的菌根共生的一些影响进行了讨论。
A model of infection of roots by vesicular–arbuscular mycorrhizas, presented earlier (Buwaldaet al., 1982), is used to study the effects of phosphorus on the spread of infection in root systems. Two hosts, with contrasting responses to mycorrhizal infection (wheat and leek), were grown at a range of phosphorus levels, and sequential measurements of growth and concentrations of phosphorus in plants, and infection of roots, were made. Increasing levels of phosphorus in the soil increased concentrations of phosphorus in the plants and reduced the percentage of root length infected in both hosts, but the effect was greater in wheat. Fitting the model showed that the inherent rate of spread of the fungus was not significantly altered by applications of phosphorus. However, the maximum proportion of the root system which could become infected was reduced, especially in wheat. Some implications of this finding on our understanding of the mycorrhizal symbiosis are discussed.