Show simple item record

dc.contributor.advisor Covington, Michael
dc.creatorGoodspeed, Danielle
dc.date.accessioned 2013-03-08T00:34:08Z
dc.date.available 2013-03-08T00:34:08Z
dc.date.issued 2012
dc.identifier.citation Goodspeed, Danielle. "Plant Defense against Insect Herbivory is Mediated by the Circadian Clock." (2012) Master’s Thesis, Rice University. https://hdl.handle.net/1911/70251.
dc.identifier.urihttps://hdl.handle.net/1911/70251
dc.description.abstract Organisms on earth evolved a circadian clock that matches the planet's 24-hour rotation. The plant clock controls many behaviors and proper entrainment of the clock to the environment leads to a competitive overall growth advantage. Despite the finding that many wound-inducible genes are also circadian regulated, it was uncertain whether this regulation is important for plant defense against herbivorous insects. We found that plants entrained to light-dark cycles 12 hours out of phase with the predator, Trichoplusia ni (cabbage loopers), were more susceptible to T. ni herbivory than plants entrained in phase with T ni . In contrast, arrhythmic clock and jasmonate-deficient mutants were equally susceptible to T. ni herbivory whether entrained in the same or reciprocal 12-hour light-dark cycles. These results suggest that the circadian rhythms, acting through jasmonate signals and the clock, add selective advantage to plants through enhanced anticipation of and defense against herbivory.
dc.format.extent 37 p.
dc.format.mimetype application/pdf
dc.language.iso eng
dc.subjectBiological sciences
Plant biology
dc.title Plant Defense against Insect Herbivory is Mediated by the Circadian Clock
dc.identifier.digital GoodspeedD
dc.type.genre Thesis
dc.type.material Text
thesis.degree.department Biochemistry and Cell Biology
thesis.degree.discipline Natural Sciences
thesis.degree.grantor Rice University
thesis.degree.level Masters
thesis.degree.name Master of Arts


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record