Abstract：
:Crop domestication and selective breeding have altered plant defense mechanisms, influencing insect-plant interactions. A reduction in plant resistance/tolerance against herbivory is generally expected in domesticated species, however, limited efforts have been made to compare inducibility of plant defenses between wild and domesticated genotypes. In the present study, the inducibility of several plant defense mechanisms (e.g. defensive chemicals, trichomes, plant volatiles) were investigated, and the performance and preference of the herbivore Helicoverpa zea were measured in three different tomato genotypes; a) wild tomato, Solanum pimpinellifolium L. (accession LA 2093), b) cherry tomato, S. lycopersicum L. var. cerasiforme (accession Matts Wild Cherry), and c) cultivated tomato, S. lycopersicum L. var. Better Boy). Enhanced inducibility of defensive chemicals, trichomes, and plant volatiles in the cultivated tomato, and a higher level of constitutive plant resistance against herbivory in the wild genotype was observed. When comparing the responses of damaged vs. undamaged leaves, the percent reduction in larval growth was higher on damaged leaves from cultivated tomato, suggesting a higher induced resistance compared to other two genotypes. While all tomato genotypes exhibited increased volatile organic compound (VOCs) emissions in response to herbivory, the cultivated variety responded with generally higher levels of VOCs. Differences in VOC patterns may have influenced the ovipositional preferences, as H. zea female moths significantly preferred laying eggs on the cultivated versus the wild tomato genotypes. Selection of traits during domestication and selective breeding could alter allocation of resources, where plants selected for higher yield performance would allocate resources to defense only when attacked.
journal_name
J Chem Ecoljournal_title
Journal of chemical ecologyauthors
Paudel S,Lin PA,Foolad MR,Ali JG,Rajotte EG,Felton GWdoi
10.1007/s10886-019-01090-4subject
Has Abstractpub_date
2019-08-01 00:00:00pages
693-707issue
8eissn
0098-0331issn
1573-1561pii
10.1007/s10886-019-01090-4journal_volume
45pub_type
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journal_title：Journal of chemical ecology
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pub_type： 杂志文章
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更新日期：2002-05-01 00:00:00
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pub_type： 杂志文章
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更新日期：2008-02-01 00:00:00
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journal_title：Journal of chemical ecology
pub_type： 杂志文章
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更新日期：1985-09-01 00:00:00
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更新日期：1981-01-01 00:00:00
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