Wurst Susanne, Dugassa-Gobena Dereje, Langel Reinhard, Bonkowski Michael, Scheu Stefan
Technische Universität Darmstadt, Institut für Zoologie, Schnittspahnstr. 3, 64287 Darmstadt, Germany.
Georg-August Universität Göttingen, Institut für Pflanzenpathologie und Pflanzenschutz, Grisebachstr. 6, 37077 Göttingen, Germany.
New Phytol. 2004 Jul;163(1):169-176. doi: 10.1111/j.1469-8137.2004.01106.x.
• Vesicular-arbuscular mycorrhiza (VAM) and earthworms are known to affect plant and herbivore performance. However, surprisingly few studies have investigated their interactions. • In a glasshouse experiment we investigated the effects of earthworms (Aporrectodea caliginosa) and VAM (Glomus intraradices) on the growth and chemistry of Plantago lanceolata and the performance of aphids (Myzus persicae). • Earthworms did not affect VAM root colonization. Earthworms enhanced shoot biomass, and VAM reduced root biomass. VAM increased plant phosphorus content, but reduced the total amount of N in leaves. Earthworms led to a preferential uptake of soil N compared with N from the added grass residues in the absence of VAM. Earthworm presence reduced the concentration of catalpol. Earthworms and VAM combined accelerated the development of M. persicae, while the development tended to be delayed when only VAM or earthworms were present. • We suggest that earthworms promote plant growth by enhancing soil N availability and may affect herbivores by influencing concentrations of secondary metabolites. VAM enhances the P uptake of plants, but presumably competes with plant roots for N.
• 泡囊丛枝菌根（VAM）和蚯蚓已知会影响植物和食草动物的表现。然而，令人惊讶的是，很少有研究调查它们之间的相互作用。
• 在温室实验中，我们研究了蚯蚓（暗色无刺蚓）和VAM（根内球囊霉）对披针叶车前草生长和化学性质以及蚜虫（桃蚜）表现的影响。
• 蚯蚓不影响VAM在根部的定殖。蚯蚓增加了地上部生物量，而VAM减少了根部生物量。VAM增加了植物的磷含量，但降低了叶片中的总氮量。与在没有VAM时添加的草残体中的氮相比，蚯蚓导致对土壤氮的优先吸收。蚯蚓的存在降低了梓醇的浓度。蚯蚓和VAM共同作用加速了桃蚜的发育，而仅存在VAM或蚯蚓时发育往往会延迟。
• 我们认为，蚯蚓通过提高土壤氮的有效性来促进植物生长，并且可能通过影响次生代谢物的浓度来影响食草动物。VAM增强了植物对磷的吸收，但可能与植物根系竞争氮。
