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Seed-associated bacterial endophytes from turf grasses promote seedling growth and defend plants from disease

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TitleInfo
Title
Seed-associated bacterial endophytes from turf grasses promote seedling growth and defend plants from disease
Name (type = personal)
NamePart (type = family)
Chen
NamePart (type = given)
Qiang
NamePart (type = date)
1986-
DisplayForm
Qiang Chen
Role
RoleTerm (authority = RULIB)
author
Name (type = personal)
NamePart (type = family)
White
NamePart (type = given)
James F.
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James F. White
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Advisory Committee
Role
RoleTerm (authority = RULIB)
chair
Name (type = personal)
NamePart (type = family)
Meyer
NamePart (type = given)
William A.
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William A. Meyer
Affiliation
Advisory Committee
Role
RoleTerm (authority = RULIB)
internal member
Name (type = personal)
NamePart (type = family)
Belanger
NamePart (type = given)
Faith C.
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Faith C. Belanger
Affiliation
Advisory Committee
Role
RoleTerm (authority = RULIB)
internal member
Name (type = personal)
NamePart (type = family)
Crane
NamePart (type = given)
Sharron L.
DisplayForm
Sharron L. Crane
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
School of Graduate Studies
Role
RoleTerm (authority = RULIB)
school
TypeOfResource
Text
Genre (authority = marcgt)
theses
OriginInfo
DateCreated (encoding = w3cdtf); (keyDate = yes); (qualifier = exact)
2020
DateOther (encoding = w3cdtf); (qualifier = exact); (type = degree)
2020-05
Language
LanguageTerm (authority = ISO 639-3:2007); (type = text)
English
Abstract (type = abstract)
Animals and plants harbor microbiomes providing benefits to hosts. In plants, both prokaryotic and eukaryotic microbiomes have been universally found and shown to promote plant growth, enhance disease resistance and abiotic stress tolerance. Fungal endophytes from grasses have been well characterized, but bacterial endophytes were rarely studied. This dissertation will present research that was conducted to test the hypothesis that cool-season turfgrass seeds bear bacterial endophytes providing beneficial effects on host, such as seed germination, growth promotion, and antifungal effects. Bacteria were isolated from seeds of different turfgrass species. Among them, Bacillus amyloliquefaciens, Bacillus pumilus, and Pantoea agglomerans were demonstrated to promote seed germination and seedling growth, and alter root architecture on host. B. amyloliquefaciens strains were shown to produce antifungal lipopeptides that suppress the growth of several fungal pathogens. Metagenomic analysis on the bacterial community associated with turfgrass seeds from low and high moisture climate revealed that moisture level influenced the community structure of the bacteria on/in turf seeds. The abundance of several bacterial groups at different taxonomy ranks on/in the seeds was either positively or negatively correlated with the seed germination rate. Overall, data supported that bacterial endophytes inhabiting turfgrass seeds benefited host by promoting seed germination and seedling development, as well as providing antifungal compounds. Moreover, moisture level was found to affect the structure of bacterial community on/in turfgrass seed, which further influenced the seed germination.
Subject (authority = local)
Topic
Bacterial endophytes
Subject (authority = RUETD)
Topic
Plant Biology
RelatedItem (type = host)
TitleInfo
Title
Rutgers University Electronic Theses and Dissertations
Identifier (type = RULIB)
ETD
Identifier
ETD_10860
PhysicalDescription
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application/pdf
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text/xml
Extent
1 online resource (xiii, 134 pages) : illustrations
Note (type = degree)
Ph.D.
Note (type = bibliography)
Includes bibliographical references
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Title
School of Graduate Studies Electronic Theses and Dissertations
Identifier (type = local)
rucore10001600001
Location
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NjNbRU
Identifier (type = doi)
doi:10.7282/t3-0s2c-hb27
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
Chen
GivenName
Qiang
Role
Copyright Holder
RightsEvent
Type
Permission or license
DateTime (encoding = w3cdtf); (qualifier = exact); (point = start)
2020-04-28 09:30:40
AssociatedEntity
Name
Qiang Chen
Role
Copyright holder
Affiliation
Rutgers University. School of Graduate Studies
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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Technical

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windows xp
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2020-04-28T13:29:11
DateCreated (point = end); (encoding = w3cdtf); (qualifier = exact)
2020-04-28T13:29:11
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