Relationships among three pathways for resource acquisition and their contribution to plant performance in the emergent aquatic Plant Lythrum salicaria (L.).
Identifieur interne : 002F28 ( Main/Corpus ); précédent : 002F27; suivant : 002F29Relationships among three pathways for resource acquisition and their contribution to plant performance in the emergent aquatic Plant Lythrum salicaria (L.).
Auteurs : K J Stevens ; R L PetersonSource :
- Plant biology (Stuttgart, Germany) [ 1435-8603 ] ; 2007.
English descriptors
- KwdEn :
- Biomass (MeSH), Lythrum (anatomy & histology), Lythrum (microbiology), Lythrum (physiology), Mycorrhizae (metabolism), Mycorrhizae (physiology), Plant Roots (growth & development), Plant Roots (metabolism), Plant Roots (microbiology), Plant Shoots (anatomy & histology), Plant Shoots (growth & development), Water (metabolism).
- MESH :
- chemical , metabolism : Water.
- anatomy & histology : Lythrum, Plant Shoots.
- growth & development : Plant Roots, Plant Shoots.
- metabolism : Mycorrhizae, Plant Roots.
- microbiology : Lythrum, Plant Roots.
- physiology : Lythrum, Mycorrhizae.
- Biomass.
Abstract
Three pathways for resource acquisition exist in the emergent aquatic plant, Lythrum salicaria (L.); a subterranean root system, a free-floating adventitious root system, and arbuscular mycorrhiza (AM) fungal hyphae colonizing subterranean roots. This study examined the relationship(s) among these pathways and their contribution to plant performance. If the free-floating adventitious root system and/or AM fungi contribute to plant growth in wetland habitats, we predicted that their absence would result in a significant reduction in plant performance. Furthermore, if a reduction in resource uptake, effected by an absence of free-floating adventitious roots and/or AM fungi, is compensated for by increased allocation to remaining pathway(s) for resource uptake, we predicted altered patterns of resource allocation among shoots and the remaining pathway(s) for resource uptake. Contrary to our predications, plants experiencing adventitious root removal and/or grown in the absence of AM fungi generally had greater biomass and total shoot height than controls. Similarly, while levels of AM colonization and subterranean root biomass displayed a treatment effect, the observed responses did not correspond with our predictions. This was also true for shoot : subterranean root dry weight ratios. Our results indicate that there is interaction among the 3 pathways for resource acquisition in L. salicaria and an effect on plant performance. The adaptive significance of these characteristics is unclear, highlighting the potential difficulties in extrapolating from terrestrial to aquatic plant species and among aquatic plant species with potentially different life history strategies.
DOI: 10.1055/s-2007-965079
PubMed: 17538864
Links to Exploration step
pubmed:17538864Le document en format XML
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Box 310559, Denton, TX 76203, USA. kjstevens@ynt.edu</nlm:affiliation></affiliation></author><author><name sortKey="Peterson, R L" sort="Peterson, R L" uniqKey="Peterson R" first="R L" last="Peterson">R L Peterson</name></author></titleStmt><publicationStmt><idno type="wicri:source">PubMed</idno><date when="2007">2007</date><idno type="RBID">pubmed:17538864</idno><idno type="pmid">17538864</idno><idno type="doi">10.1055/s-2007-965079</idno><idno type="wicri:Area/Main/Corpus">002F28</idno><idno type="wicri:explorRef" wicri:stream="Main" wicri:step="Corpus" wicri:corpus="PubMed">002F28</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en">Relationships among three pathways for resource acquisition and their contribution to plant performance in the emergent aquatic Plant Lythrum salicaria (L.).</title><author><name sortKey="Stevens, K J" sort="Stevens, K J" uniqKey="Stevens K" first="K J" last="Stevens">K J Stevens</name><affiliation><nlm:affiliation>Department of Biological Sciences, Institute of Applied Sciences, University of North Texas, P.O. Box 310559, Denton, TX 76203, USA. kjstevens@ynt.edu</nlm:affiliation></affiliation></author><author><name sortKey="Peterson, R L" sort="Peterson, R L" uniqKey="Peterson R" first="R L" last="Peterson">R L Peterson</name></author></analytic><series><title level="j">Plant biology (Stuttgart, Germany)</title><idno type="ISSN">1435-8603</idno><imprint><date when="2007" type="published">2007</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Biomass (MeSH)</term><term>Lythrum (anatomy & histology)</term><term>Lythrum (microbiology)</term><term>Lythrum (physiology)</term><term>Mycorrhizae (metabolism)</term><term>Mycorrhizae (physiology)</term><term>Plant Roots (growth & development)</term><term>Plant Roots (metabolism)</term><term>Plant Roots (microbiology)</term><term>Plant Shoots (anatomy & histology)</term><term>Plant Shoots (growth & development)</term><term>Water (metabolism)</term></keywords><keywords scheme="MESH" type="chemical" qualifier="metabolism" xml:lang="en"><term>Water</term></keywords><keywords scheme="MESH" qualifier="anatomy & histology" xml:lang="en"><term>Lythrum</term><term>Plant Shoots</term></keywords><keywords scheme="MESH" qualifier="growth & development" xml:lang="en"><term>Plant Roots</term><term>Plant Shoots</term></keywords><keywords scheme="MESH" qualifier="metabolism" xml:lang="en"><term>Mycorrhizae</term><term>Plant Roots</term></keywords><keywords scheme="MESH" qualifier="microbiology" xml:lang="en"><term>Lythrum</term><term>Plant Roots</term></keywords><keywords scheme="MESH" qualifier="physiology" xml:lang="en"><term>Lythrum</term><term>Mycorrhizae</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Biomass</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Three pathways for resource acquisition exist in the emergent aquatic plant, Lythrum salicaria (L.); a subterranean root system, a free-floating adventitious root system, and arbuscular mycorrhiza (AM) fungal hyphae colonizing subterranean roots. This study examined the relationship(s) among these pathways and their contribution to plant performance. If the free-floating adventitious root system and/or AM fungi contribute to plant growth in wetland habitats, we predicted that their absence would result in a significant reduction in plant performance. Furthermore, if a reduction in resource uptake, effected by an absence of free-floating adventitious roots and/or AM fungi, is compensated for by increased allocation to remaining pathway(s) for resource uptake, we predicted altered patterns of resource allocation among shoots and the remaining pathway(s) for resource uptake. Contrary to our predications, plants experiencing adventitious root removal and/or grown in the absence of AM fungi generally had greater biomass and total shoot height than controls. Similarly, while levels of AM colonization and subterranean root biomass displayed a treatment effect, the observed responses did not correspond with our predictions. This was also true for shoot : subterranean root dry weight ratios. Our results indicate that there is interaction among the 3 pathways for resource acquisition in L. salicaria and an effect on plant performance. The adaptive significance of these characteristics is unclear, highlighting the potential difficulties in extrapolating from terrestrial to aquatic plant species and among aquatic plant species with potentially different life history strategies.</div></front></TEI><pubmed><MedlineCitation Status="MEDLINE" Owner="NLM"><PMID Version="1">17538864</PMID><DateCompleted><Year>2008</Year><Month>01</Month><Day>24</Day></DateCompleted><DateRevised><Year>2013</Year><Month>11</Month><Day>21</Day></DateRevised><Article PubModel="Print-Electronic"><Journal><ISSN IssnType="Print">1435-8603</ISSN><JournalIssue CitedMedium="Print"><Volume>9</Volume><Issue>6</Issue><PubDate><Year>2007</Year><Month>Nov</Month></PubDate></JournalIssue><Title>Plant biology (Stuttgart, Germany)</Title><ISOAbbreviation>Plant Biol (Stuttg)</ISOAbbreviation></Journal><ArticleTitle>Relationships among three pathways for resource acquisition and their contribution to plant performance in the emergent aquatic Plant Lythrum salicaria (L.).</ArticleTitle><Pagination><MedlinePgn>758-65</MedlinePgn></Pagination><Abstract><AbstractText>Three pathways for resource acquisition exist in the emergent aquatic plant, Lythrum salicaria (L.); a subterranean root system, a free-floating adventitious root system, and arbuscular mycorrhiza (AM) fungal hyphae colonizing subterranean roots. This study examined the relationship(s) among these pathways and their contribution to plant performance. If the free-floating adventitious root system and/or AM fungi contribute to plant growth in wetland habitats, we predicted that their absence would result in a significant reduction in plant performance. Furthermore, if a reduction in resource uptake, effected by an absence of free-floating adventitious roots and/or AM fungi, is compensated for by increased allocation to remaining pathway(s) for resource uptake, we predicted altered patterns of resource allocation among shoots and the remaining pathway(s) for resource uptake. Contrary to our predications, plants experiencing adventitious root removal and/or grown in the absence of AM fungi generally had greater biomass and total shoot height than controls. Similarly, while levels of AM colonization and subterranean root biomass displayed a treatment effect, the observed responses did not correspond with our predictions. This was also true for shoot : subterranean root dry weight ratios. Our results indicate that there is interaction among the 3 pathways for resource acquisition in L. salicaria and an effect on plant performance. The adaptive significance of these characteristics is unclear, highlighting the potential difficulties in extrapolating from terrestrial to aquatic plant species and among aquatic plant species with potentially different life history strategies.</AbstractText></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Stevens</LastName><ForeName>K J</ForeName><Initials>KJ</Initials><AffiliationInfo><Affiliation>Department of Biological Sciences, Institute of Applied Sciences, University of North Texas, P.O. Box 310559, Denton, TX 76203, USA. kjstevens@ynt.edu</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Peterson</LastName><ForeName>R L</ForeName><Initials>RL</Initials></Author></AuthorList><Language>eng</Language><PublicationTypeList><PublicationType UI="D016428">Journal Article</PublicationType></PublicationTypeList><ArticleDate DateType="Electronic"><Year>2007</Year><Month>05</Month><Day>31</Day></ArticleDate></Article><MedlineJournalInfo><Country>England</Country><MedlineTA>Plant Biol (Stuttg)</MedlineTA><NlmUniqueID>101148926</NlmUniqueID><ISSNLinking>1435-8603</ISSNLinking></MedlineJournalInfo><ChemicalList><Chemical><RegistryNumber>059QF0KO0R</RegistryNumber><NameOfSubstance UI="D014867">Water</NameOfSubstance></Chemical></ChemicalList><CitationSubset>IM</CitationSubset><MeshHeadingList><MeshHeading><DescriptorName UI="D018533" MajorTopicYN="N">Biomass</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D031561" MajorTopicYN="N">Lythrum</DescriptorName><QualifierName UI="Q000033" MajorTopicYN="N">anatomy & histology</QualifierName><QualifierName UI="Q000382" MajorTopicYN="N">microbiology</QualifierName><QualifierName UI="Q000502" MajorTopicYN="Y">physiology</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D038821" MajorTopicYN="N">Mycorrhizae</DescriptorName><QualifierName UI="Q000378" MajorTopicYN="N">metabolism</QualifierName><QualifierName UI="Q000502" MajorTopicYN="N">physiology</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D018517" MajorTopicYN="N">Plant Roots</DescriptorName><QualifierName UI="Q000254" MajorTopicYN="Y">growth & development</QualifierName><QualifierName UI="Q000378" MajorTopicYN="N">metabolism</QualifierName><QualifierName UI="Q000382" MajorTopicYN="N">microbiology</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D018520" MajorTopicYN="N">Plant Shoots</DescriptorName><QualifierName UI="Q000033" MajorTopicYN="N">anatomy & histology</QualifierName><QualifierName UI="Q000254" MajorTopicYN="N">growth & development</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D014867" MajorTopicYN="N">Water</DescriptorName><QualifierName UI="Q000378" MajorTopicYN="N">metabolism</QualifierName></MeshHeading></MeshHeadingList></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="pubmed"><Year>2007</Year><Month>6</Month><Day>1</Day><Hour>9</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>2008</Year><Month>1</Month><Day>25</Day><Hour>9</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="entrez"><Year>2007</Year><Month>6</Month><Day>1</Day><Hour>9</Hour><Minute>0</Minute></PubMedPubDate></History><PublicationStatus>ppublish</PublicationStatus><ArticleIdList><ArticleId IdType="pubmed">17538864</ArticleId><ArticleId IdType="doi">10.1055/s-2007-965079</ArticleId></ArticleIdList></PubmedData></pubmed></record>Pour manipuler ce document sous Unix (Dilib)
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