Plant Defense against Insect Herbivory is Mediated by the Circadian Clock

Simple item page
dc.contributor.advisorCovington, Michael
dc.creatorGoodspeed, Danielle
dc.date.accessioned2013-03-08T00:34:08Z
dc.date.available2013-03-08T00:34:08Z
dc.date.issued2012
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.
dc.format.extent37 p.en_US
dc.format.mimetypeapplication/pdf
dc.identifier.callnoTHESIS BIOCHEM. 2012 GOODSPEED
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>.
dc.identifier.digitalGoodspeedDen_US
dc.identifier.urihttps://hdl.handle.net/1911/70251
dc.language.isoeng
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.
dc.subjectBiological sciences
dc.subjectPlant biology
dc.titlePlant Defense against Insect Herbivory is Mediated by the Circadian Clock
dc.typeThesis
dc.type.materialText
thesis.degree.departmentBiochemistry and Cell Biology
thesis.degree.disciplineNatural Sciences
thesis.degree.grantorRice University
thesis.degree.levelMasters
thesis.degree.nameMaster of Arts
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 Electronic Theses and Dissertations