Plant Defense against Insect Herbivory is Mediated by the Circadian Clock

Simple item page
dc.contributor.advisorCovington, Michaelen_US
dc.creatorGoodspeed, Danielleen_US
dc.date.accessioned2013-03-08T00:34:08Zen_US
dc.date.available2013-03-08T00:34:08Zen_US
dc.date.issued2012en_US
dc.description.abstractOrganisms 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.en_US
dc.format.extent37 p.en_US
dc.format.mimetypeapplication/pdfen_US
dc.identifier.callnoTHESIS BIOCHEM. 2012 GOODSPEEDen_US
dc.identifier.citationGoodspeed, Danielle. "Plant Defense against Insect Herbivory is Mediated by the Circadian Clock." (2012) Master’s Thesis, Rice University. <a href="https://hdl.handle.net/1911/70251">https://hdl.handle.net/1911/70251</a>.en_US
dc.identifier.digitalGoodspeedDen_US
dc.identifier.urihttps://hdl.handle.net/1911/70251en_US
dc.language.isoengen_US
dc.rightsCopyright is held by the author, unless otherwise indicated. Permission to reuse, publish, or reproduce the work beyond the bounds of fair use or other exemptions to copyright law must be obtained from the copyright holder.en_US
dc.subjectBiological sciencesen_US
dc.subjectPlant biologyen_US
dc.titlePlant Defense against Insect Herbivory is Mediated by the Circadian Clocken_US
dc.typeThesisen_US
dc.type.materialTexten_US
thesis.degree.departmentBiochemistry and Cell Biologyen_US
thesis.degree.disciplineNatural Sciencesen_US
thesis.degree.grantorRice Universityen_US
thesis.degree.levelMastersen_US
thesis.degree.nameMaster of Artsen_US
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
GoodspeedD.pdf
Size:
2.95 MB
Format:
Adobe Portable Document Format
Download
Collections
Rice University Theses and Dissertations