Disruption of carbon for nutrient exchange between potato and arbuscular mycorrhizal fungi enhanced cyst nematode fitness and host pest tolerance.
Disruption of carbon for nutrient exchange between potato and arbuscular mycorrhizal fungi enhanced cyst nematode fitness and host pest tolerance.
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DOI：
10.1111/nph.17958
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发表时间：
2022-04
期刊：
影响因子：
9.4
通讯作者：
Field, Katie J.
中科院分区：
文献类型：
--
作者：
Bell, Christopher A.;Magkourilou, Emily;Urwin, P. E.;Field, Katie J.
关键词：
植物同时与一系列生物营养共生体相互作用，从丛枝菌根真菌（AMF）等互利共生体到马铃薯胞囊线虫（PCN）等寄生虫。菌根获得的养分与植物固定碳 (C) 的交换已得到充分研究；然而，竞争共生体的影响仍未得到充分探索。在这项研究中，我们使用放射性同位素示踪技术检查了有或没有 AMF 和 PCN 的马铃薯中的菌根养分和宿主资源分配，同时确定了这种分配的后果。 PCN 的存在扰乱了植物和 AMF 之间的养分交换 C，而植物 C 绝大多数由线虫获得。尽管如此，AMF 仍然在感染 PCN 的马铃薯上维持营养物质的转移，最终失去了与宿主进行营养物质交换的碳。当 PCN 利用更大的营养储备来推动 AMF 马铃薯种群增长时，真菌赋予宿主耐受性，让宿主承担寄生负担。我们的研究结果为植物-AMF共生体的地下动态提供了重要的见解，其中AMF同时赋予宿主及其寄生虫的营养和非营养益处在植物群落动态中很少被考虑。我们的研究结果表明，这可能是一个关键的疏忽，特别是在考虑植物和土壤群落中的碳和养分流时。
Plants simultaneously interact with a range of biotrophic symbionts, ranging from mutualists such as arbuscular mycorrhizal fungi (AMF), to parasites such as the potato cyst nematode (PCN). The exchange of mycorrhizal‐acquired nutrients for plant‐fixed carbon (C) is well studied; however, the impact of competing symbionts remains underexplored. In this study, we examined mycorrhizal nutrient and host resource allocation in potato with and without AMF and PCN using radioisotope tracing, whilst determining the consequences of such allocation. The presence of PCN disrupted C for nutrient exchange between plants and AMF, with plant C overwhelmingly obtained by the nematodes. Despite this, AMF maintained transfer of nutrients on PCN‐infected potato, ultimately losing out in their C for nutrient exchange with the host. Whilst PCN exploited the greater nutrient reserves to drive population growth on AMF–potato, the fungus imparted tolerance to allow the host to bear the parasitic burden. Our findings provide important insights into the belowground dynamics of plant–AMF symbioses, where simultaneous nutritional and nonnutritional benefits conferred by AMF to hosts and their parasites are seldom considered in plant community dynamics. Our findings suggest this may be a critical oversight, particularly in the consideration of C and nutrient flows in plant and soil communities.
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影响因子：
5.6
作者：
Chen M;Arato M;Borghi L;Nouri E;Reinhardt D
通讯作者：
Reinhardt D
DOI：
10.1017/s0022149x00031485
发表时间：
1940-01-01
期刊：
JOUR HELMINTHOL
影响因子：
--
作者：
FENWICK, D. W.
通讯作者：
FENWICK, D. W.
影响因子：
20.5
作者：
Cameron, Duncan D.;Neal, Andrew L.;van Wees, Saskia C. M.;Ton, Jurriaan
通讯作者：
Ton, Jurriaan
影响因子：
4.4
作者：
del Mar Alguacil, Maria;Torrecillas, Emma;Roldan, Antonio
通讯作者：
Roldan, Antonio
影响因子：
1.2
作者：
Deliopoulos, Thomas;Haydock, Patrick P. J.;Jones, Peter W.
通讯作者：
Jones, Peter W.