Abstract Detail



Ecology

Kariyat, Rupesh [1].

Effects of herbivore induced toxins in Solanaceae on the growth and development of a specialist herbivore.

 Solanum atropurpureum (Purple Devil) is a perennial herbaceous plant that exhibits an extreme defense phenotype. The plant has thick and dense purple spines on leaves and stem, that act as a structural defense against herbivores. More interestingly, when damaged by Manduca sexta, a specialist herbivore of Solanaceae, the plant also produces sap from the damage sites, but not when mechanically wounded. The sap is rich in sugars and M. sexta caterpillars readily feed on sugars, but then get their mouthparts and limbs clogged and thus unable to feed and move around the plant. In addition, the sap also contains mannose, a sugar toxic to M. sexta that depletes cellular ATP. Taken together, in addition to the spines, Purple devil has an elaborate and regulated herbivore defense system using a combination of physical and chemical defense traits to efficiently deter herbivore feeding.


1 - University Of Texas, Rio Grande Valley, 1201 W. University Dr., Dept Of Biology, 1201 W. University Dr., Dept Of Biology, Edinburg,, TX, 78539, United States

Keywords:
plant defense
sap
spines.

Presentation Type: Oral Paper
Number: 0001
Abstract ID:988
Candidate for Awards:None


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