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Evolutionary and demographic processes in the invasive weed Microstegium vimineum
Descriptive
TitleInfo
Title
Evolutionary and demographic processes in the invasive weed Microstegium vimineum
Name
(type = personal)
NamePart
(type = family)
Novy
NamePart
(type = given)
Ari E.
NamePart
(type = date)
1978-
DisplayForm
Ari Novy
Role
RoleTerm
(authority = RULIB)
author
Name
(type = personal)
NamePart
(type = family)
Hartman
NamePart
(type = given)
Jean Marie
DisplayForm
Jean Marie Hartman
Affiliation
Advisory Committee
Role
RoleTerm
(authority = RULIB)
chair
Name
(type = personal)
NamePart
(type = family)
Bonos
NamePart
(type = given)
Stacy
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Stacy Bonos
Affiliation
Advisory Committee
Role
RoleTerm
(authority = RULIB)
internal member
Name
(type = personal)
NamePart
(type = family)
Struwe
NamePart
(type = given)
Lena
DisplayForm
Lena Struwe
Affiliation
Advisory Committee
Role
RoleTerm
(authority = RULIB)
internal member
Name
(type = personal)
NamePart
(type = family)
Smouse
NamePart
(type = given)
Peter E.
DisplayForm
Peter E. Smouse
Affiliation
Advisory Committee
Role
RoleTerm
(authority = RULIB)
outside member
Name
(type = corporate)
NamePart
Rutgers University
Role
RoleTerm
(authority = RULIB)
degree grantor
Name
(type = corporate)
NamePart
Graduate School - New Brunswick
Role
RoleTerm
(authority = RULIB)
school
TypeOfResource
Text
Genre
(authority = marcgt)
theses
OriginInfo
DateCreated
(qualifier = exact)
2012
DateOther
(qualifier = exact);
(type = degree)
2012-05
CopyrightDate
(qualifier = exact)
2012
Place
PlaceTerm
(type = code)
xx
Language
LanguageTerm
(authority = ISO639-2b);
(type = code)
eng
Abstract
(type = abstract)
Microstegium vimineum (Trin.) A. Camus (stiltgrass) is considered among the most invasive plants in the eastern United States. There has been considerable study of this species’ ecology and management though far less attention has been paid to its molecular ecology and the evolutionary processes which may influence its invasion success. Here, I describe a newly developed molecular marker system (microsatellite) which I used to examine M. vimineum’s genetic population structure and diversity in both its native and introduced ranges. I found clear signals that M. vimineum’s mating system is the most important determinant of the species’ population structure and variability. The invasive range had lower genetic diversity overall, probably due to founder effects. Also, population and regional genetic differentiation appeared to be ‘in process’ in the invasive range. Furthermore, M. vimineum’s mixed cleistogamous/chasmogamous mating system allowed for the near fixation of microsatellite genotypes in a given population by high rates of selfing, while still permitting the persistence of allelic diversity and generation of new genotypes at low frequency via occasional outcrossing. Thus, this mating system may confer adaptive advantage to the species as it settles upon fit genotypes in a given area while retaining evolutionary potential for range expansion into new habitats. I also attempted to discern adaptively significant phenotypes in M. vimineum through the measurement of phenological variation of plants originating from across the species’ invasive range under manipulated light treatments. Flowering time and biomass were both strongly correlated with the latitude of population origin such that populations collected from more northern latitudes flowered significantly earlier at lower biomass than populations from southern locations. This pattern suggests rapid adaptive evolution of phenology over a period of less than one hundred years, and such changes have likely promoted the northward range expansion of this species. Interestingly, barriers to gene flow, including bottlenecks and inbreeding, have apparently not forestalled adaptive processes for this plant. Based on literature review and these new data, I hypothesize that adaptive evolution of phenological traits may be widespread in many invasive plant species and an essential process during range expansion.
Subject
(authority = RUETD)
Topic
Plant Biology
RelatedItem
(type = host)
TitleInfo
Title
Rutgers University Electronic Theses and Dissertations
Identifier
(type = RULIB)
ETD
Identifier
ETD_3845
PhysicalDescription
Form
(authority = gmd)
electronic resource
InternetMediaType
application/pdf
InternetMediaType
text/xml
Extent
xiv, 201 p. : ill.
Note
(type = degree)
Ph.D.
Note
(type = bibliography)
Includes bibliographical references
Note
(type = vita)
Includes vita
Note
(type = statement of responsibility)
by Ari E. Novy
Subject
(authority = ETD-LCSH)
Topic
Invasive plants--Molecular aspects
Subject
(authority = ETD-LCSH)
Topic
Grasses--Molecular aspects
Subject
(authority = ETD-LCSH)
Topic
Grasses--Evolution
Subject
(authority = ETD-LCSH)
Topic
Invasive plants--Evolution
Identifier
(type = hdl)
http://hdl.rutgers.edu/1782.1/rucore10001600001.ETD.000065234
RelatedItem
(type = host)
TitleInfo
Title
Graduate School - New Brunswick Electronic Theses and Dissertations
Identifier
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rucore19991600001
Location
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(displayLabel = Rutgers, The State University of New Jersey)
NjNbRU
Identifier
(type = doi)
doi:10.7282/T3ZK5FM0
Genre
(authority = ExL-Esploro)
ETD doctoral
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Rights
RightsDeclaration
(ID = rulibRdec0006)
The author owns the copyright to this work.
RightsHolder
(type = personal)
Name
FamilyName
Novy
GivenName
Ari
Role
Copyright Holder
RightsEvent
Type
Permission or license
DateTime
(encoding = w3cdtf);
(qualifier = exact);
(point = start)
2012-03-12 15:51:19
AssociatedEntity
Name
Ari Novy
Role
Copyright holder
Affiliation
Rutgers University. Graduate School - New Brunswick
AssociatedObject
Type
License
Name
Author Agreement License
Detail
I hereby grant to the Rutgers University Libraries and to my school the non-exclusive right to archive, reproduce and distribute my thesis or dissertation, in whole or in part, and/or my abstract, in whole or in part, in and from an electronic format, subject to the release date subsequently stipulated in this submittal form and approved by my school. I represent and stipulate that the thesis or dissertation and its abstract are my original work, that they do not infringe or violate any rights of others, and that I make these grants as the sole owner of the rights to my thesis or dissertation and its abstract. I represent that I have obtained written permissions, when necessary, from the owner(s) of each third party copyrighted matter to be included in my thesis or dissertation and will supply copies of such upon request by my school. I acknowledge that RU ETD and my school will not distribute my thesis or dissertation or its abstract if, in their reasonable judgment, they believe all such rights have not been secured. I acknowledge that I retain ownership rights to the copyright of my work. I also retain the right to use all or part of this thesis or dissertation in future works, such as articles or books.
Copyright
Status
Copyright protected
Availability
Status
Open
Reason
Permission or license
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windows xp
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application/pdf
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5959680
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