Increasing phosphorus supply is not the mechanism by which arbuscular mycorrhiza increase attractiveness of bean (Vicia faba) to aphids.

Associations between the attractiveness of plants to aphids and plant VOCs There was no significant association between the attractiveness of plants to aphids and the amounts of individual VOCs, but there was a highly significant ( R 2 =0.66, F 6,23 =5.336, P =0.003) association between attractiveness and proportions of: ( Z )-2-hexenal ( T =3.42, P =0.003), ( Z )-2-heptenal ( T =–2.30, P =0.034), 6-methyl-5-hepten-2-one ( T =4.15, P =0.001), ( R , S )-β-pinene (T=–2.45, P =0.025), ( E )-caryophyllene (T=4.31, P <0.001), and ( E )-β-farnesene ( T =4.06, P <0.001).

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