Compares aphid feeding behavior across diet types to inform plant resistance strategies.
We investigated the aphid probing behavior, on liquid artificial diets and agarose-sucrose gels by electrical penetration graphs (DC EPG) to monitor the probing/feeding behavior of the Rhopalosiphum padi L. and Acyrthosiphon pisum Harris. One alfalfa saponin, zanhic acid tridesmoside (a compound with wide range of biological properties), was tested for its effects on feeding behavior of aphids. The EPG patterns generated by aphids feeding on plants were used to interpret the patterns observed on the diets and gels. To investigate the effects of two factors: (i). Diet type (liquid artificial diets/agarose sucrose gels) and (ii). Aphid (R. padi/A. pisum) species, on number of waveforms and average time of waveforms, generalized linear mixed model (GLMM) with a Gaussian error structure were used. On artificial diets and gels, number of penetrations and average time of waveforms depended on studied factors. The essential factors in these analyses were : Diet type and Aphid species. These results suggested that liquid agarose diet and sucrose- agarose gels could be used to study the aphid probing/feeding behavior and in biotechnological projects for resistant plant breeding to sucking-piercing herbivores.
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Golawska et al. (2020) studied this question.
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