Show simple item record

dc.contributor.advisor Rudgers, Jennifer A.
dc.creatorAfkhami, Michelle Elizabeth
dc.date.accessioned 2018-12-03T18:32:09Z
dc.date.available 2018-12-03T18:32:09Z
dc.date.issued 2007
dc.identifier.urihttps://hdl.handle.net/1911/103644
dc.description.abstract Vertically transmitted symbionts associate with some of the most ecologically dominant species on Earth, and their fixation has led to major evolutionary transitions (e.g., mitochondria, chloroplasts). While transmission has been well documented for parasites, for most mutualist symbionts it remains unknown whether vertical transmission is imperfect (symbiont not transmitted to all offspring) in nature and during which host life history stage the symbiont is lost. Through quantitative natural history surveys of fungal endophytes in native grasses, we show that transmission was imperfect for all seven species examined. The type and degree of loss depended on the population and host species, suggesting that transmission varies across geographic mosaics. Our results open new directions for understanding cooperation and conflict in the system. For example, imperfect transmission provides a previously unexplored avenue for host sanctions against costly symbionts. Similarly, endophytes gain opportunities for partner choice that would not exist if transmission were perfect.
dc.format.extent 38 pp
dc.language.iso eng
dc.subjectEcology
Microbiology
Biological sciences
dc.title Symbiosis lost: Imperfect vertical transmission of fungal endophytes in native grasses
dc.identifier.digital 304802787
dc.type.genre Thesis
dc.type.material Text
thesis.degree.department Ecology and Evolutionary Biology
thesis.degree.discipline Natural Sciences
thesis.degree.grantor Rice University
thesis.degree.level Masters
thesis.degree.name Master of Arts
dc.identifier.callno THESIS ECOL. 2008 AFKHAMI
dc.identifier.citation Afkhami, Michelle Elizabeth. "Symbiosis lost: Imperfect vertical transmission of fungal endophytes in native grasses." (2007) Master’s Thesis, Rice University. https://hdl.handle.net/1911/103644.


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record