Contrasting arbuscular mycorrhizal communities colonizing different host plants show a similar response to a soil phosphorus concentration gradient.
Contrasting arbuscular mycorrhizal communities colonizing different host plants show a similar response to a soil phosphorus concentration gradient.
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DOI：
10.1111/nph.12169
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发表时间：
2013-04
期刊：
影响因子：
--
通讯作者：
Bending GD
中科院分区：
文献类型：
--
作者：
Gosling P;Mead A;Proctor M;Hammond JP;Bending GD
土壤磷浓度高往往会降低丛枝菌根真菌（AM真菌）的根定殖，但磷对AM真菌多样性的影响尚不明确。我们使用末端限制性片段长度多态性（T-RFLP）的18 S rDNA和克隆，以评估AM真菌殖民玉米（玉米），大豆（Glycene max）和田间紫罗兰（Viola arvensis）的多样性，在一个季节沿着10-280毫克l-1的P梯度在该领域的三个时间点。百分比AM定植采样时间点之间的变化，但不减少高土壤磷，除玉米。AM多样性在采样时间点之间无显著差异。在P > 25 mg l−1的浓度下，多样性降低，特别是在玉米和大豆中。克隆和T-RFLP表明不同寄主物种AM群落之间存在差异。除了在最高磷浓度下，宿主物种比土壤磷更重要地决定AM群落。我们的研究结果表明，土壤磷对AM真菌定殖植物的多样性的影响是大致相似的，尽管不同的植物包含不同的社区。然而，在每一个主机的AM社区的反应的微妙差异是显而易见的。
High soil phosphorus (P) concentration is frequently shown to reduce root colonization by arbuscular mycorrhizal (AM) fungi, but the influence of P on the diversity of colonizing AM fungi is uncertain. We used terminal restriction fragment length polymorphism (T-RFLP) of 18S rDNA and cloning to assess diversity of AM fungi colonizing maize (Zea mays), soybean (Glycene max) and field violet (Viola arvensis) at three time points in one season along a P gradient of 10–280 mg l−1 in the field. Percentage AM colonization changed between sampling time points but was not reduced by high soil P except in maize. There was no significant difference in AM diversity between sampling time points. Diversity was reduced at concentrations of P > 25 mg l−1, particularly in maize and soybean. Both cloning and T-RFLP indicated differences between AM communities in the different host species. Host species was more important than soil P in determining the AM community, except at the highest P concentration. Our results show that the impact of soil P on the diversity of AM fungi colonizing plants was broadly similar, despite the fact that different plants contained different communities. However, subtle differences in the response of the AM community in each host were evident.
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影响因子：
4.9
作者：
Galvez, L;Douds, DD;Wagoner, P
通讯作者：
Wagoner, P
DOI：
10.1016/j.jembe.2005.12.017
发表时间：
2006-03-07
影响因子：
2
作者：
Clarke, KR;Somerfield, PJ;Chapman, MG
通讯作者：
Chapman, MG
影响因子：
3.6
作者：
Beauregard, M. S.;Hamel, C.;St-Arnaud, M.
通讯作者：
St-Arnaud, M.
影响因子：
5
作者：
JOHNSON, NC
通讯作者：
JOHNSON, NC
影响因子：
11
作者：
Hazard, Christina;Gosling, Paul;Bending, Gary D.
通讯作者：
Bending, Gary D.