Wild potato ancestors as potential sources of resistance to the aphid Myzus persicae

Abstract

BACKGROUND: Plant resistance to insects can be reduced by crop domestication which means their wild ancestors could provide novel sources of resistance. Thus, crossing wild ancestors with domesticated crops can potentially enhance their resistance against insects. However, a prerequisite for this is identification of sources of resistance. Here, we investigated the response of three wild potato (Solanum stoloniferum Schltdl.) accessions and cultivated potato (Solanum tuberosum) to aphid (Myzus persicae Sulzer) herbivory.RESULTS: Results revealed that there was a significant reduction in aphid survival and reproduction on wild potato accessions (CGN18333, CGN22718, CGN23072) compared to cultivated (Desiree) potato plants. A similar trend was observed in olfactometer bioassay; the wild accessions had a repellent effect on adult aphids. In contrast, among the tested wild potato accessions, the parasitoid Diaeretiella rapae (M'Intosh) was significantly attracted to volatiles from CGN18333. Volatile analysis showed that wild accessions emitted significantly more volatiles compared to cultivated potato. Principal component analysis (PCA) of volatile data revealed that the volatile profiles of wild and cultivated potato are dissimilar. ⊎-Bisabolene, (E)-⊎-farnesene, trans-⊍-bergamotene, D-limonene, (E,E)-4,8,12-trimethyl-1,3,7,11-tridecatetraene (TMTT), and p-cymen-7-ol were the main volatiles contributing to the emitted blends, suggesting possible involvement in the behavioural response of both M. persicae and D. rapae. CONCLUSION: Our findings show that the tested wild accessions have the potential to be used to breed aphid-resistant potatoes. This opens new opportunities to reduce the aphid damage and to enhance the recruitment of natural enemies.

Peach–Potato Aphid Myzus persicae: Current Management Strategies, Challenges, and Proposed Solutions

“…botrytis (L.); kale, Brassica oleracea var. acephala (L.); mustard, Brassica juncea (L.); radish, Raphanus raphanistrum (L.); and turnip, Brassica rapa (L.)); Cucurbitaceae (cucumber, Cucmis sativus (L.); squash, Cucurbita pepo L.)); Fabaceae (bean, Phaseolus vulgaris (L.); pea, Pisum sativum (L.)); Poaceae (maize, Zea mays (L.); wheat, Triticum aestivum (L.); barley, Hordeum vulgare (L.); and rice, Oryza sativa (L.)); and Solanaceae (potato, Solanum tuberosum (L.); pepper, Capsicum annuum (L.); and tomato, Solanum lycopersicum (L.) [9][10][11][12][13][14]. Additionally, the peach-potato aphid acts as an important vector and transmits over hundreds of plant viruses, including potato leafroll virus (PLV), potato virus Y (PVY), beet western yellows viruses, beet yellows viruses, lettuce mosaic virus, cauliflower mosaic virus, turnip mosaic virus, cucumber mosaic, and watermelon mosaic viruses, which indirectly affect the growth and development of the host plant [3,9,[15][16][17][18].…”

Allelochemical Interactions in the Trophic System «Henosepilachna vigintioctomaculata Motschulsky—Solanum tuberosum Linneus»

“…It can be concluded that varieties of agricultural crops with resistance to biotic and abiotic factors determine the character of the specialization of many phytophagous insects drastically changing the insect species composition in ecosystems—attracting insects from wild vegetation to crops or eliminating entire species in the process of replacing native vegetation by cultural one and the formation of agroecosystems [ 9 ]. When an insect species switches from wild vegetation to field crops its habitat range and biotic potential usually increase [ 10 ]. The 28-spotted potato ladybird beetle is no exception.…”

Challenges and opportunities in managing pests of potato

“…accessions and cultivated potato to aphid (Myzus persicae Sulzer) herbivory was studied. 20 The authors provide evidence that the tested wild accessions have the potential to be used to breed aphid-resistant potatoes. This opens new opportunities to reduce aphid damage and to enhance the recruitment of natural enemies.…”

“…Lastly, this special issue includes a study where the response of three wild potato ( Solanum stoloniferum Schltdl.) accessions and cultivated potato to aphid ( Myzus persicae Sulzer) herbivory was studied 20 . The authors provide evidence that the tested wild accessions have the potential to be used to breed aphid‐resistant potatoes.…”