In:
Entomologia Experimentalis et Applicata, Wiley, Vol. 165, No. 2-3 ( 2017-12), p. 148-158
Abstract:
The sweetpotato whitefly, Bemisia tabaci (Gennadius) (Hemiptera: Aleyrodidae), B and Q biotypes have caused severe losses to crops and vegetables through virus transmission. Our previous studies showed that Q is more efficient than B in acquisition and transmission of tomato yellow leaf curl virus ( TYLCV ) and viruliferous Q is better equipped than B in counterattacking jasmonic acid ( JA )‐related plant defense. To understand how plant‐mediated defensive responses involving JA affect insect vectors within a tritrophic framework of plants, insects, and viruses, we examined the effects of exogenous JA on preference and performance of non‐viruliferous and viruliferous B and Q on tomato plants ( Solanum lycopersicum L., Solanaceae). Our results demonstrated a significantly lower fecundity, shorter longevity, shorter developmental time, and lower survival rate of whiteflies on JA ‐treated than on control plants. In addition, viruliferous Q performed significantly better than B in fecundity, longevity, developmental time, and survival rate. When given a choice between JA ‐treated and control tomato plants, viruliferous Q was not repelled to JA ‐treated plants when the JA concentration was 0.01 and 0.1 m m , whereas others all preferred the untreated control plants. Exogenous JA increased the concentration and the composition of plant volatiles, such as α‐terpinene and β‐ocimene, which deterred whiteflies in a Y‐tube bioassay. It is worth noting that Q has a mutualistic relationship with TYLCV to counteract the host defenses. A better understanding of tritrophic interactions between plants, insects, and viruses will facilitate the development of sustainable management of this invasive global pest.
Type of Medium:
Online Resource
ISSN:
0013-8703
,
1570-7458
DOI:
10.1111/eea.2017.165.issue-2pt3
Language:
English
Publisher:
Wiley
Publication Date:
2017
detail.hit.zdb_id:
2015286-3
SSG:
12
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