Interaction between arbuscular mycorrhizal fungi and the nematicide aldicarb on hatch and development of the potato cyst nematode, Globodera pallida, and yield of potatoes
Interaction between arbuscular mycorrhizal fungi and the nematicide aldicarb on hatch and development of the potato cyst nematode, Globodera pallida, and yield of potatoes
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DOI：
10.1163/156854108786161427
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发表时间：
2008-01-01
期刊：
影响因子：
1.2
通讯作者：
Jones, Peter W.
中科院分区：
文献类型：
--
作者：
Deliopoulos, Thomas;Haydock, Patrick P. J.;Jones, Peter W.
以马铃薯（Solanum tuberosum）为试材，研究了不同接种量对马铃薯（Solanum tuberosum cv.以丛枝菌根真菌（AMF）混合菌株接种Vaminoc和3个单一菌株（Glomus intraradices，G. mosseae和G.杜西;在盆栽试验中，在有或没有杀线虫剂涕灭威（Temik IOG）存在的情况下，评估了Vaminoc的组分）对马铃薯胞囊线虫（PCN）苍白球壳线虫（Globodera pallida）的抑制作用。马铃薯根的菌根化刺激了G.在种植后的最初2-4周内。在涕灭威存在下，接种AMF的植株表现出的PCN种群大小（活卵（g土壤）（-1））仅为未接种植株的57%;在涕灭威不存在下，相应的值为42%。施用涕灭威对AMF在根长上的定殖无影响。与未受PCN侵染的植物（45%）相比，受PCN侵染的植物的根表现出降低的菌根定殖水平（41%）。所用的AMF分离物在它们产生植物生长反应（表示为根干重、茎干重或总干生物量）和影响块茎产量的能力上不同。在这方面，单个球囊霉分离株增强了植物生长（总干生物量增加36%），并平均提高了22%的新鲜块茎产量，而在大多数情况下，Vaminoc没有效果。结果表明，AMF具有降低G.通过包括刺激线虫孵化和抑制根侵入双重机制进行苍白球繁殖。需要进行田间试验来推进这项研究，并评估将AMF纳入G. pallida综合管理战略。
The effects of inoculation of roots of the potato (Solanum tuberosum) cv. Golden Wonder with the mixed-isolate arbuscular mycorrhizal fungus (AMF) inoculum Vaminoc, or with three single-isolates AMF inocula (Glomus intraradices, G. mosseae and G. dussii; components of Vaminoc), on the potato cyst nematode (PCN) Globodera pallida were assessed in a pot experiment in the presence or absence of the nematicide aldicarb (Temik I OG). Mycorrhization of potato roots stimulated an 11% overall mean increase in the hatch of G. pallida within the first 2-4 weeks from planting. In the presence of aldicarb, AMF-inoculated plants exhibited only 57% of the PCN population size (viable eggs (g soil)(-1)) of the non-inoculated plants; in the absence of aldicarb the respective value was 42%. Root length colonisation by AMF was unaffected by the application of aldicarb. Roots of PCN-infested plants exhibited reduced levels of mycorrhizal colonisation (41%) compared to non-PCN-infested plants (45%). The AMF isolates used differed in their ability to produce a plant growth response (expressed as root dry weight, shoot dry weight or total dry biomass) and to affect tuber yield. In this regard, the single Glomus isolates enhanced plant growth (36% increase in total dry biomass) and improved fresh tuber yield by 22% on average, while Vaminoc had, in most cases, no effect. It was concluded that AMF have potential to reduce G. pallida multiplication via a dual mechanism involving stimulation of nematode hatch and inhibition of root invasion. Field experimentation will be required to take this research forward and assess the feasibility of including AMF in G. pallida integrated management strategies.