Heterodera schachtii nematodes interfere with aphid-plant relations on Brassica oleracea.
Heterodera schachtii nematodes interfere with aphid-plant relations on Brassica oleracea.
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DOI：
10.1007/s10886-013-0338-4
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发表时间：
2013-09
影响因子：
2.3
通讯作者：
Van Dam, Nicole M.
中科院分区：
文献类型：
--
作者：
Hol, W. H. Gera;De Boer, Wietse;Termorshuizen, Aad J.;Meyer, Katrin M.;Schneider, Johannes H. M.;Van der Putten, Wim H.;Van Dam, Nicole M.
地上和地下食草动物物种对植物防御反应的调节是不同的。同时侵染对根部和地上部的初级和次生代谢物组成具有非加性效应。我们以前发现，在棉铃虫侵染之前(4周)，被线虫(Heterodera Schachtii)侵染的植株上，甘蓝上的棉铃虫(Brevicoryne Brassicae)种群增长减少。在这里，我们研究了感染食根线虫如何影响寄主植物中的初级和次级代谢物，以及这是否可以解释蚜虫加倍时间从3.8天增加到6.7天。我们假设，草食动物对植物代谢物的影响将取决于其他草食动物的存在，线虫诱导的初级代谢物的变化将与降低蚜虫的表现相关。叶片中硫代葡萄糖苷的总浓度不受线虫存在的影响，但硫代葡萄糖苷的组成随着葡萄糖苷浓度的降低而变化，而葡萄糖苷蛋白的浓度在暴露于线虫的植物中增加。棉铃虫的存在增加了叶片中4-甲氧基葡萄糖苷的浓度，并与单株的棉铃虫数量呈正相关。线虫降低了韧皮部中氨基酸和糖的浓度。棉铃虫种群倍增时间与叶片中氨基酸和硫代葡萄糖苷含量呈负相关，而当有线虫时，这种相关性不显著。总之，一种食草动物对植物代谢物的影响与另一种食草动物的存在无关。线虫的存在减少了蚜虫种群的增长，扰乱了植物与蚜虫之间的取食关系。本文的在线版本(doi：10.1007/s10886-0130338-4)包含补充材料，授权用户可以使用。
Aboveground and belowground herbivore species modify plant defense responses differently. Simultaneous attack can lead to non-additive effects on primary and secondary metabolite composition in roots and shoots. We previously found that aphid (Brevicoryne brassicae) population growth on Brassica oleracea was reduced on plants that were infested with nematodes (Heterodera schachtii) prior (4 weeks) to aphid infestation. Here, we examined how infection with root-feeding nematodes affected primary and secondary metabolites in the host plant and whether this could explain the increase in aphid doubling time from 3.8 to 6.7 days. We hypothesized that the effects of herbivores on plant metabolites would depend on the presence of the other herbivore and that nematode-induced changes in primary metabolites would correlate with reduced aphid performance. Total glucosinolate concentration in the leaves was not affected by nematode presence, but the composition of glucosinolates shifted, as gluconapin concentrations were reduced, while gluconapoleiferin concentrations increased in plants exposed to nematodes. Aphid presence increased 4-methoxyglucobrassicin concentrations in leaves, which correlated positively with the number of aphids per plant. Nematodes decreased amino acid and sugar concentrations in the phloem. Aphid population doubling time correlated negatively with amino acids and glucosinolate levels in leaves, whereas these correlations were non-significant when nematodes were present. In conclusion, the effects of an herbivore on plant metabolites were independent of the presence of another herbivore. Nematode presence reduced aphid population growth and disturbed feeding relations between plants and aphids. The online version of this article (doi:10.1007/s10886-013-0338-4) contains supplementary material, which is available to authorized users.
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影响因子：
8.8
作者：
Hol, W. H. Gera;de Boer, Wietse;van der Putten, Wim H.
通讯作者：
van der Putten, Wim H.
影响因子：
2.3
作者：
Kos, Martine;Houshyani, Benyamin;Achhami, Buddhi B.;Wietsma, Rafal;Gols, Rieta;Weldegergis, Berhane T.;Kabouw, Patrick;Bouwmeester, Harro J.;Vet, Louise E. M.;Dicke, Marcel;van Loon, Joop J. A.
通讯作者：
van Loon, Joop J. A.
影响因子：
1.8
作者：
Heijbroek, W;Munning, RG;van Swaaij, ACPM
通讯作者：
van Swaaij, ACPM
影响因子：
1.9
作者：
Kabouw, P.;Kos, M.;Biere, A.
通讯作者：
Biere, A.
影响因子：
1.8
作者：
Khan, M. A. M.;Ulrichs, Christian;Mewis, Inga
通讯作者：
Mewis, Inga