A Legume Host Benefits More from Arbuscular Mycorrhizal Fungi Than a Grass Host in the Presence of a Root Hemiparasitic Plant.
A Legume Host Benefits More from Arbuscular Mycorrhizal Fungi Than a Grass Host in the Presence of a Root Hemiparasitic Plant.
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在根半寄生植物存在的情况下，豆科宿主比草宿主更能从丛枝菌根真菌中获益
DOI：
10.3390/microorganisms10020440
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发表时间：
2022-02-15
期刊：
影响因子：
4.5
通讯作者：
Li A
中科院分区：
文献类型：
--
作者：
Sui X;Guan K;Chen Y;Xue R;Li A
在自然界中，大多数被根半寄生物寄生的植物也被共生的丛枝菌根（AM）真菌定殖，突出了这种三方相互作用的普遍性。 AM定植通常可以改善寄生豆科植物的生长，但对根半寄生物寄生的草寄主影响不大，其潜在机制仍不清楚。在本研究中，我们进行了盆栽实验，以测试在根半寄生植物（甘肃马先蒿）存在下 AM 真菌（Glomus mosseae）对豆科白三叶草和禾本科披碱草生长和光合作用的影响。结果表明，接种AM真菌可通过提高寄生豆科植物的营养状况和光合能力，显着改善寄生豆科植物的生长性能，尽管在AM处理中，较大的甘肃青霉寄生在豆科植物宿主上。相比之下，AM定植通过抑制吸器形成和甘肃青草的生长，略微改善了草寄主的芽干重。我们的结果表明，在存在半寄生植物的情况下，豆类宿主比草类宿主更能从 AM 接种中受益，并阐述了各种机制。该研究为解析AM真菌、寄生植物和寄主植物的三营养相互作用提供了新线索。
In nature, most plants parasitized by root hemiparasites are also colonized by mutualistic arbuscular mycorrhizal (AM) fungi, highlighting the prevalence of this tripartite interaction. AM colonization is generally found to improve the growth of parasitized legumes but has little impact on grass hosts parasitized by root hemiparasites, and the underlying mechanisms are still unclear. In this study, we conducted a pot experiment to test the influence of AM fungus (Glomus mosseae) on the growth and photosynthesis of leguminous Trifolium repens and gramineous Elymus nutans in the presence of a root hemiparasitic plant (Pedicularis kansuensis). The results showed that inoculation with AM fungi significantly improved the growth performance of parasitized legumes via enhancing their nutrient status and photosynthetic capacity, even though a larger P. kansuensis parasitized the legume host in the AM treatment. In contrast, AM colonization slightly improved the shoot DW of grass hosts by suppressing haustoria formation and the growth of P. kansuensis. Our results demonstrated that legume hosts benefit more from AM inoculation than grass hosts in the presence of hemiparasitic plants, and set out the various mechanisms. This study provides new clues for parsing the tritrophic interaction of AM fungi, parasitic plants, and host plants.
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影响因子：
64.8
作者：
Bardgett, RD;Smith, RS;Hobbs, PJ
通讯作者：
Hobbs, PJ
影响因子：
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通讯作者：
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作者：
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通讯作者：
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