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Airborne host-plant manipulation by whiteflies via an inducible blend of plant volatiles.
- Source :
-
Proceedings of the National Academy of Sciences of the United States of America . 4/9/2019, Vol. 116 Issue 15, p7387-7396. 10p. - Publication Year :
- 2019
-
Abstract
- The whitefly Bemisia tabaci is one of the world's most important invasive crop pests, possibly because it manipulates plant defense signaling. Upon infestation by whiteflies, plants mobilize salicylic acid (SA)-dependent defenses, which mainly target pathogens. In contrast, jasmonic acid (JA)-dependent defenses are gradually suppressed in whitefly-infested plants. The down-regulation of JA defenses make plants more susceptible to insects, including whiteflies. Here, we report that this host-plant manipulation extends to neighboring plants via airborne signals. Plants respond to insect attack with the release of a blend of inducible volatiles. Perception of these volatiles by neighboring plants usually primes them to prepare for an imminent attack. Here, however, we show that whitefly-induced tomato plant volatiles prime SA-dependent defenses and suppress JA-dependent defenses, thus rendering neighboring tomato plants more susceptible to whiteflies. Experiments with volatiles from caterpillar-damaged and pathogeninfected plants, as well as with synthetic volatiles, confirm that whiteflies modify the quality of neighboring plants for their offspring via whitefly-inducible plant volatiles. [ABSTRACT FROM AUTHOR]
- Subjects :
- *HOST plants
*ALEYRODIDAE
*SWEETPOTATO whitefly
*SALICYLIC acid
*JASMONIC acid
Subjects
Details
- Language :
- English
- ISSN :
- 00278424
- Volume :
- 116
- Issue :
- 15
- Database :
- Academic Search Index
- Journal :
- Proceedings of the National Academy of Sciences of the United States of America
- Publication Type :
- Academic Journal
- Accession number :
- 135856266
- Full Text :
- https://doi.org/10.1073/pnas.1818599116