Intra-specific variation of behavioral signals in suppressing plant defenses in the green peach aphid Myzus persicae, feeding on the resistant wild peach Prunus davidiana

The green peach aphid, Myzus persicae (Sulzer), is a generalist insect herbivore capable of using a wide range of cultivated plants and weeds. In this laboratory study, we examined the inter-clonal variation in M. persicae’s ability to exploit the wild peach Prunus davidiana, a source of genetic res...

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Bibliographic Details
Published in:Journal of pest science 2015-06, Vol.88 (2), p.259-266
Main Authors: Cabrera-Brandt, M. A, Verdugo, J. A, Ramírez, C. C, Lacroze, J. P, Sauge, M. H, Figueroa, C. C
Format: Article
Language:English
Subjects:
Agricultural sciences
Agriculture
Aphidoidea
Biomedical and Life Sciences
Breeding
clones
Cloning
Cultivated plants
Ecology
Entomology
Feeding
Feeding behavior
Forestry
Fruits
genes
Genetic diversity
genetic resistance
genetic variation
herbivores
Host plants
Insects
Life Sciences
Myzus persicae
Orchards
Original Paper
peaches
Pest resistance
plant adaptation
Plant breeding
Plant Pathology
Plant resistance
Plant Sciences
planting
Prunus davidiana
Reproduction (biology)
Saliva
screening
sieve elements
weeds
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Summary:The green peach aphid, Myzus persicae (Sulzer), is a generalist insect herbivore capable of using a wide range of cultivated plants and weeds. In this laboratory study, we examined the inter-clonal variation in M. persicae’s ability to exploit the wild peach Prunus davidiana, a source of genetic resistance to aphids used by peach breeding programs. An initial screening of a set of sexually reproducing clones collected from commercial orchards planted with susceptible varieties found significant genetic variation in aphid survival on P. davidiana. Comparison of two clones (Fr2 and Fr12) found marked differences in colony sizes achieved. A detailed analysis of probing and feeding behavior showed that the clone exhibiting the highest performance on P. davidiana (Fr2) initiated probing earlier than the lower performing clone (Fr12). Periods of non-probing were also significantly shorter for this clone. Finally, Fr2 produced more and longer events of watery saliva injection into sieve elements. We discuss these results in terms of host plant adaptation by aphids and their capacity to overcome plant-resistance genes.
ISSN:1612-4758
1612-4766
DOI:10.1007/s10340-014-0614-2