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Fungal volatile organic compounds and their effects on seed germination and plant growth in arabidopsis thaliana
Descriptive
TitleInfo
Title
Fungal volatile organic compounds and their effects on seed germination and plant growth in arabidopsis thaliana
Name
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Hung
NamePart
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Richard
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Richard Hung
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author
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Bennett
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Joan W
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Joan W Bennett
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Advisory Committee
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chair
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Chin
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Chee-Kok
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Chee-Kok Chin
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Advisory Committee
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internal member
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Oudemans
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Peter
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Peter Oudemans
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Advisory Committee
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internal member
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White
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(type = given)
James
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James White
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Advisory Committee
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(authority = RULIB)
internal member
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(type = personal)
NamePart
(type = family)
Masurekar
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(type = given)
Prakash
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Prakash Masurekar
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Advisory Committee
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(authority = RULIB)
outside member
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(type = personal)
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(type = family)
Rodriguez-Saona
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(type = given)
Cesar
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Cesar Rodriguez-Saona
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Advisory Committee
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outside member
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NamePart
Rutgers University
Role
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degree grantor
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Graduate School - New Brunswick
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Text
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theses
OriginInfo
DateCreated
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2014
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(type = degree)
2014-01
Place
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xx
Language
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(type = code)
eng
Abstract
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The biological effects of volatile organic compounds (VOCs) have been studied in depth in many organisms. Known volatile interactions include insect–insect or insect–plant interactions, effects of industrial volatiles on humans, plant–plant interactions, plant–bacterial interactions as well as others. Both plant and fungal volatiles have been heavily researched, however, very little research has been conducted to determine the effects of fungal VOCs on plant growth and health. In order to test these effects in a controlled and reproducible manner, I designed a novel exposure system to assess plant sensitivity to fungal VOCs. This system is designed to expose plants to any microbial or anthropogenic volatile source. In addition, it is scalable to conduct larger experiments and/or expose larger plants to VOCs. With this exposure system, I have determined that Trichoderma viride VOCs induce increased growth in the plant model system Arabidopsis thaliana (45% greater freshweight and 58% greater chlorophyll concentration after four weeks). To determine the volatile or group of volatiles responsible for inducing growth promotion, gas chromatography and mass spectroscopy were conducted, identifying 56 unique compounds. After a literature review of volatiles commonly produced by fungi, 23 compounds were selected to test. A. thaliana plants were exposed to these compounds individually at 1ppm for 3 days. Various effects on the plants were observed ranging from complete inhibition of seedling formation by 1-octen-3-one to increased fresh weight (4.2%) and chlorophyll concentration (3.7%) in plants exposed to (-)limonene. No single compound tested induced the growth promotion observed in the T. viride exposure experiment indicating that a different compound or a mixture of compounds is possibly responsible for T. viride VOC induced growth promotion. These results show that naturally occurring fungal VOCs have the ability to induce positive or negative changes in plant growth and health. As pressure on agricultural production for fiber, food, and fuel increases for the ever growing human population, volatile gasses will be an important factor to consider as phytostimulants and phytotoxins. The application of stimulatory volatiles for growth enhancement could be used to increase crop yield.
Subject
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Topic
Plant Biology
RelatedItem
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Title
Rutgers University Electronic Theses and Dissertations
Identifier
(type = RULIB)
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Identifier
ETD_5238
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electronic resource
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application/pdf
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text/xml
Extent
xi, 156 p. : ill.
Note
(type = degree)
Ph.D.
Note
(type = bibliography)
Includes bibliographical references
Note
(type = statement of responsibility)
by Richard Hung
Subject
(authority = ETD-LCSH)
Topic
Arabidopsis thaliana
Subject
(authority = ETD-LCSH)
Topic
Volatile organic compounds
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TitleInfo
Title
Graduate School - New Brunswick Electronic Theses and Dissertations
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rucore19991600001
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NjNbRU
Identifier
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doi:10.7282/T3VH5KX2
Genre
(authority = ExL-Esploro)
ETD doctoral
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Rights
RightsDeclaration
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The author owns the copyright to this work.
RightsHolder
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Name
FamilyName
Hung
GivenName
Richard
Role
Copyright Holder
RightsEvent
Type
Permission or license
DateTime
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(qualifier = exact);
(point = start)
2013-12-20 16:52:32
AssociatedEntity
Name
Richard Hung
Role
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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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Technical
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ETD
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windows xp
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