Abstract

Salivary proteins play key roles in the co-evolution of aphids and their host plants. This study characterizes the aphid-specific and small secretory protein ACYPI006346 in the pea aphid Acyrthosiphon pisum. The ACYPI006346 transcript is enriched in the salivary glands, particularly in cell types 5 and 7 of the principal salivary glands. Transcript knockdown by dsRNA injection, which lasts for 24 h does not influence the survival of aphids on plants. The transcript levels of ACYPI006346 were different in three pea aphid colonies adapting to Vicia faba, Vicia villosa, or Medicago truncatula, respectively.

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