Comparative Anatomy of Intervessel Pits in Two Mangrove Species Growing Along a Natural Salinity Gradient in Gazi Bay, Kenya
Identifieur interne : 000135 ( Pmc/Corpus ); précédent : 000134; suivant : 000136Comparative Anatomy of Intervessel Pits in Two Mangrove Species Growing Along a Natural Salinity Gradient in Gazi Bay, Kenya
Auteurs : Nele Schmitz ; Steven Jansen ; Anouk Verheyden ; James Gitundu Kairo ; Hans Beeckman ; Nico KoedamSource :
- Annals of Botany [ 0305-7364 ] ; 2007.
Abstract
According to the air-seeding hypothesis, embolism vulnerability in xylem elements is linked directly to bordered pit structure and functioning. To elucidate the adaptive potential of intervessel pits towards fluctuating environmental conditions, two mangrove species with a distinct ecological distribution growing along a natural salinity gradient were investigated.
Scanning and transmission electron microscopic observations were conducted to obtain qualitative and quantitative characteristics of alternate intervessel pits in
Vestured pits without visible pores in the pit membrane were observed in
The contrasting ecological distribution of two mangrove species was reflected in the geometry and pit membrane characteristics of their intervessel pits. Within species, intervessel pit size seemed to be independent of spatial variations in environmental conditions and was only weakly correlated with vessel diameter. Further research on pit formation and function has to clarify the large variations in intervessel pit size within trees and even within single vessels.
Url:
DOI: 10.1093/aob/mcm103
PubMed: 17565970
PubMed Central: 2735318
Links to Exploration step
PMC:2735318Le document en format XML
<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en">Comparative Anatomy of Intervessel Pits in Two Mangrove Species Growing Along a Natural Salinity Gradient in Gazi Bay, Kenya</title><author><name sortKey="Schmitz, Nele" sort="Schmitz, Nele" uniqKey="Schmitz N" first="Nele" last="Schmitz">Nele Schmitz</name><affiliation><nlm:aff id="af1"><institution>Vrije Universiteit Brussel (VUB)</institution>,<addr-line>Laboratory for General Botany and Nature Management (APNA), Pleinlaan 2, 1050 Brussels</addr-line>,<country>Belgium</country></nlm:aff></affiliation><affiliation><nlm:aff id="af2"><institution>Royal Museum for Central Africa (RMCA)</institution>,<addr-line>Laboratory for Wood Biology and Wood Collection, Leuvensesteenweg 13, 3080 Tervuren</addr-line>,<country>Belgium</country></nlm:aff></affiliation></author><author><name sortKey="Jansen, Steven" sort="Jansen, Steven" uniqKey="Jansen S" first="Steven" last="Jansen">Steven Jansen</name><affiliation><nlm:aff id="af3"><addr-line>Jodrell Laboratory</addr-line>,<institution>Royal Botanic Gardens Kew</institution>,<addr-line>Richmond, Surrey TW9 3DS</addr-line>,<country>UK</country></nlm:aff></affiliation></author><author><name sortKey="Verheyden, Anouk" sort="Verheyden, Anouk" uniqKey="Verheyden A" first="Anouk" last="Verheyden">Anouk Verheyden</name><affiliation><nlm:aff id="af2"><institution>Royal Museum for Central Africa (RMCA)</institution>,<addr-line>Laboratory for Wood Biology and Wood Collection, Leuvensesteenweg 13, 3080 Tervuren</addr-line>,<country>Belgium</country></nlm:aff></affiliation><affiliation><nlm:aff id="af4"><institution>SUNY Orange County Community College</institution>,<addr-line>Department of Biology, 115 South Street, Middletown, NY 10940</addr-line>,<country>USA</country></nlm:aff></affiliation></author><author><name sortKey="Kairo, James Gitundu" sort="Kairo, James Gitundu" uniqKey="Kairo J" first="James Gitundu" last="Kairo">James Gitundu Kairo</name><affiliation><nlm:aff id="af5"><institution>Kenya Marine and Fisheries Research Institute (KMFRI)</institution>,<addr-line>PO Box 81651, Mombasa</addr-line>,<country>Kenya</country></nlm:aff></affiliation></author><author><name sortKey="Beeckman, Hans" sort="Beeckman, Hans" uniqKey="Beeckman H" first="Hans" last="Beeckman">Hans Beeckman</name><affiliation><nlm:aff id="af2"><institution>Royal Museum for Central Africa (RMCA)</institution>,<addr-line>Laboratory for Wood Biology and Wood Collection, Leuvensesteenweg 13, 3080 Tervuren</addr-line>,<country>Belgium</country></nlm:aff></affiliation></author><author><name sortKey="Koedam, Nico" sort="Koedam, Nico" uniqKey="Koedam N" first="Nico" last="Koedam">Nico Koedam</name><affiliation><nlm:aff id="af1"><institution>Vrije Universiteit Brussel (VUB)</institution>,<addr-line>Laboratory for General Botany and Nature Management (APNA), Pleinlaan 2, 1050 Brussels</addr-line>,<country>Belgium</country></nlm:aff></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">PMC</idno><idno type="pmid">17565970</idno><idno type="pmc">2735318</idno><idno type="url">http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2735318</idno><idno type="RBID">PMC:2735318</idno><idno type="doi">10.1093/aob/mcm103</idno><date when="2007">2007</date><idno type="wicri:Area/Pmc/Corpus">000135</idno><idno type="wicri:explorRef" wicri:stream="Pmc" wicri:step="Corpus" wicri:corpus="PMC">000135</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en" level="a" type="main">Comparative Anatomy of Intervessel Pits in Two Mangrove Species Growing Along a Natural Salinity Gradient in Gazi Bay, Kenya</title><author><name sortKey="Schmitz, Nele" sort="Schmitz, Nele" uniqKey="Schmitz N" first="Nele" last="Schmitz">Nele Schmitz</name><affiliation><nlm:aff id="af1"><institution>Vrije Universiteit Brussel (VUB)</institution>,<addr-line>Laboratory for General Botany and Nature Management (APNA), Pleinlaan 2, 1050 Brussels</addr-line>,<country>Belgium</country></nlm:aff></affiliation><affiliation><nlm:aff id="af2"><institution>Royal Museum for Central Africa (RMCA)</institution>,<addr-line>Laboratory for Wood Biology and Wood Collection, Leuvensesteenweg 13, 3080 Tervuren</addr-line>,<country>Belgium</country></nlm:aff></affiliation></author><author><name sortKey="Jansen, Steven" sort="Jansen, Steven" uniqKey="Jansen S" first="Steven" last="Jansen">Steven Jansen</name><affiliation><nlm:aff id="af3"><addr-line>Jodrell Laboratory</addr-line>,<institution>Royal Botanic Gardens Kew</institution>,<addr-line>Richmond, Surrey TW9 3DS</addr-line>,<country>UK</country></nlm:aff></affiliation></author><author><name sortKey="Verheyden, Anouk" sort="Verheyden, Anouk" uniqKey="Verheyden A" first="Anouk" last="Verheyden">Anouk Verheyden</name><affiliation><nlm:aff id="af2"><institution>Royal Museum for Central Africa (RMCA)</institution>,<addr-line>Laboratory for Wood Biology and Wood Collection, Leuvensesteenweg 13, 3080 Tervuren</addr-line>,<country>Belgium</country></nlm:aff></affiliation><affiliation><nlm:aff id="af4"><institution>SUNY Orange County Community College</institution>,<addr-line>Department of Biology, 115 South Street, Middletown, NY 10940</addr-line>,<country>USA</country></nlm:aff></affiliation></author><author><name sortKey="Kairo, James Gitundu" sort="Kairo, James Gitundu" uniqKey="Kairo J" first="James Gitundu" last="Kairo">James Gitundu Kairo</name><affiliation><nlm:aff id="af5"><institution>Kenya Marine and Fisheries Research Institute (KMFRI)</institution>,<addr-line>PO Box 81651, Mombasa</addr-line>,<country>Kenya</country></nlm:aff></affiliation></author><author><name sortKey="Beeckman, Hans" sort="Beeckman, Hans" uniqKey="Beeckman H" first="Hans" last="Beeckman">Hans Beeckman</name><affiliation><nlm:aff id="af2"><institution>Royal Museum for Central Africa (RMCA)</institution>,<addr-line>Laboratory for Wood Biology and Wood Collection, Leuvensesteenweg 13, 3080 Tervuren</addr-line>,<country>Belgium</country></nlm:aff></affiliation></author><author><name sortKey="Koedam, Nico" sort="Koedam, Nico" uniqKey="Koedam N" first="Nico" last="Koedam">Nico Koedam</name><affiliation><nlm:aff id="af1"><institution>Vrije Universiteit Brussel (VUB)</institution>,<addr-line>Laboratory for General Botany and Nature Management (APNA), Pleinlaan 2, 1050 Brussels</addr-line>,<country>Belgium</country></nlm:aff></affiliation></author></analytic><series><title level="j">Annals of Botany</title><idno type="ISSN">0305-7364</idno><idno type="eISSN">1095-8290</idno><imprint><date when="2007">2007</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en"><sec><title>Background and Aims</title><p>According to the air-seeding hypothesis, embolism vulnerability in xylem elements is linked directly to bordered pit structure and functioning. To elucidate the adaptive potential of intervessel pits towards fluctuating environmental conditions, two mangrove species with a distinct ecological distribution growing along a natural salinity gradient were investigated.</p></sec><sec><title>Methods</title><p>Scanning and transmission electron microscopic observations were conducted to obtain qualitative and quantitative characteristics of alternate intervessel pits in <italic>A. marina</italic> and scalariform intervessel pits in <italic>Rhizophora mucronata</italic>. Wood samples from three to six trees were collected at seven and five sites for <italic>A. marina</italic> and <italic>R. mucronata</italic>, respectively, with considerable differences between sites in soil water salinity.</p></sec><sec><title>Key Results</title><p>Vestured pits without visible pores in the pit membrane were observed in <italic>A. marina</italic>, the mangrove species with the widest geographical distribution on global as well as local scale. Their thick pit membranes (on average 370 nm) and minute pit apertures may contribute to reduced vulnerability to cavitation of this highly salt-tolerant species. The smaller ecological distribution of <italic>R. mucronata</italic> was in accordance with wide pit apertures and a slightly higher pitfield fraction (67 % <italic>vs.</italic> 60 % in <italic>A. marina</italic>). Nonetheless, its outer pit apertures were observed to be funnel-shaped shielding non-porous pit membranes. No trends in intervessel pit size were observed with increasing soil water salinity of the site.</p></sec><sec><title>Conclusions</title><p>The contrasting ecological distribution of two mangrove species was reflected in the geometry and pit membrane characteristics of their intervessel pits. Within species, intervessel pit size seemed to be independent of spatial variations in environmental conditions and was only weakly correlated with vessel diameter. Further research on pit formation and function has to clarify the large variations in intervessel pit size within trees and even within single vessels.</p></sec></div></front></TEI><pmc article-type="research-article"><pmc-comment>The publisher of this article does not allow downloading of the full text in XML form.</pmc-comment>
<front><journal-meta><journal-id journal-id-type="nlm-ta">Ann Bot</journal-id><journal-id journal-id-type="publisher-id">annbot</journal-id><journal-id journal-id-type="hwp">annbot</journal-id><journal-title-group><journal-title>Annals of Botany</journal-title></journal-title-group><issn pub-type="ppub">0305-7364</issn><issn pub-type="epub">1095-8290</issn><publisher><publisher-name>Oxford University Press</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="pmid">17565970</article-id><article-id pub-id-type="pmc">2735318</article-id><article-id pub-id-type="doi">10.1093/aob/mcm103</article-id><article-id pub-id-type="publisher-id">mcm103</article-id><article-categories><subj-group subj-group-type="heading"><subject>Original Articles</subject></subj-group></article-categories><title-group><article-title>Comparative Anatomy of Intervessel Pits in Two Mangrove Species Growing Along a Natural Salinity Gradient in Gazi Bay, Kenya</article-title><alt-title alt-title-type="left-running"><italic>Schmitz</italic> et al. — <italic>Intervessel Pits in Two Mangrove Species</italic></alt-title><alt-title alt-title-type="right-running"><italic>Schmitz</italic> et al. — <italic>Intervessel Pits in Two Mangrove Species</italic></alt-title></title-group><contrib-group><contrib contrib-type="author"><name><surname>Schmitz</surname><given-names>Nele</given-names></name><xref ref-type="aff" rid="af1">1</xref><xref ref-type="aff" rid="af2">2</xref><xref ref-type="corresp" rid="cor1">*</xref></contrib><contrib contrib-type="author"><name><surname>Jansen</surname><given-names>Steven</given-names></name><xref ref-type="aff" rid="af3">3</xref></contrib><contrib contrib-type="author"><name><surname>Verheyden</surname><given-names>Anouk</given-names></name><xref ref-type="aff" rid="af2">2</xref><xref ref-type="aff" rid="af4">4</xref></contrib><contrib contrib-type="author"><name><surname>Kairo</surname><given-names>James Gitundu</given-names></name><xref ref-type="aff" rid="af5">5</xref></contrib><contrib contrib-type="author"><name><surname>Beeckman</surname><given-names>Hans</given-names></name><xref ref-type="aff" rid="af2">2</xref></contrib><contrib contrib-type="author"><name><surname>Koedam</surname><given-names>Nico</given-names></name><xref ref-type="aff" rid="af1">1</xref></contrib></contrib-group><aff id="af1"><label>1</label><institution>Vrije Universiteit Brussel (VUB)</institution>,<addr-line>Laboratory for General Botany and Nature Management (APNA), Pleinlaan 2, 1050 Brussels</addr-line>,<country>Belgium</country></aff><aff id="af2"><label>2</label><institution>Royal Museum for Central Africa (RMCA)</institution>,<addr-line>Laboratory for Wood Biology and Wood Collection, Leuvensesteenweg 13, 3080 Tervuren</addr-line>,<country>Belgium</country></aff><aff id="af3"><label>3</label><addr-line>Jodrell Laboratory</addr-line>,<institution>Royal Botanic Gardens Kew</institution>,<addr-line>Richmond, Surrey TW9 3DS</addr-line>,<country>UK</country></aff><aff id="af4"><label>4</label><institution>SUNY Orange County Community College</institution>,<addr-line>Department of Biology, 115 South Street, Middletown, NY 10940</addr-line>,<country>USA</country></aff><aff id="af5"><label>5</label><institution>Kenya Marine and Fisheries Research Institute (KMFRI)</institution>,<addr-line>PO Box 81651, Mombasa</addr-line>,<country>Kenya</country></aff><author-notes><corresp id="cor1"><label>*</label>For correspondence. E-mail <email>nschmitz@vub.ac.be</email></corresp></author-notes><pub-date pub-type="ppub"><month>8</month><year>2007</year></pub-date><pub-date pub-type="epub"><day>11</day><month>6</month><year>2007</year></pub-date><volume>100</volume><issue>2</issue><fpage>271</fpage><lpage>281</lpage><history><date date-type="received"><day>6</day><month>2</month><year>2007</year></date><date date-type="rev-request"><day>5</day><month>3</month><year>2007</year></date><date date-type="accepted"><day>4</day><month>4</month><year>2007</year></date></history><permissions><copyright-statement>© The Author 2007. Published by Oxford University Press on behalf of the Annals of Botany Company. All rights reserved. For Permissions, please email: journals.permissions@oxfordjournals.org</copyright-statement></permissions><abstract><sec><title>Background and Aims</title><p>According to the air-seeding hypothesis, embolism vulnerability in xylem elements is linked directly to bordered pit structure and functioning. To elucidate the adaptive potential of intervessel pits towards fluctuating environmental conditions, two mangrove species with a distinct ecological distribution growing along a natural salinity gradient were investigated.</p></sec><sec><title>Methods</title><p>Scanning and transmission electron microscopic observations were conducted to obtain qualitative and quantitative characteristics of alternate intervessel pits in <italic>A. marina</italic> and scalariform intervessel pits in <italic>Rhizophora mucronata</italic>. Wood samples from three to six trees were collected at seven and five sites for <italic>A. marina</italic> and <italic>R. mucronata</italic>, respectively, with considerable differences between sites in soil water salinity.</p></sec><sec><title>Key Results</title><p>Vestured pits without visible pores in the pit membrane were observed in <italic>A. marina</italic>, the mangrove species with the widest geographical distribution on global as well as local scale. Their thick pit membranes (on average 370 nm) and minute pit apertures may contribute to reduced vulnerability to cavitation of this highly salt-tolerant species. The smaller ecological distribution of <italic>R. mucronata</italic> was in accordance with wide pit apertures and a slightly higher pitfield fraction (67 % <italic>vs.</italic> 60 % in <italic>A. marina</italic>). Nonetheless, its outer pit apertures were observed to be funnel-shaped shielding non-porous pit membranes. No trends in intervessel pit size were observed with increasing soil water salinity of the site.</p></sec><sec><title>Conclusions</title><p>The contrasting ecological distribution of two mangrove species was reflected in the geometry and pit membrane characteristics of their intervessel pits. Within species, intervessel pit size seemed to be independent of spatial variations in environmental conditions and was only weakly correlated with vessel diameter. Further research on pit formation and function has to clarify the large variations in intervessel pit size within trees and even within single vessels.</p></sec></abstract><kwd-group><title>Key words</title><kwd><italic>Rhizophora mucronata</italic></kwd><kwd><italic>Avicennia marina</italic></kwd><kwd>intervessel pits</kwd><kwd>salinity</kwd><kwd>Kenya</kwd><kwd>pit membrane</kwd><kwd>vestures</kwd><kwd>ecological wood anatomy</kwd><kwd>cavitation vulnerability</kwd><kwd>xylem</kwd><kwd>field-emission SEM</kwd><kwd>TEM</kwd></kwd-group></article-meta></front></pmc></record>Pour manipuler ce document sous Unix (Dilib)
EXPLOR_STEP=$WICRI_ROOT/Wicri/Bois/explor/CheneBelgiqueV1/Data/Pmc/Corpus
HfdSelect -h $EXPLOR_STEP/biblio.hfd -nk 000135 | SxmlIndent | more
Ou
HfdSelect -h $EXPLOR_AREA/Data/Pmc/Corpus/biblio.hfd -nk 000135 | SxmlIndent | more
Pour mettre un lien sur cette page dans le réseau Wicri
{{Explor lien
|wiki= Wicri/Bois
|area= CheneBelgiqueV1
|flux= Pmc
|étape= Corpus
|type= RBID
|clé= PMC:2735318
|texte= Comparative Anatomy of Intervessel Pits in Two Mangrove Species Growing Along a Natural Salinity Gradient in Gazi Bay, Kenya
}}
Pour générer des pages wiki
HfdIndexSelect -h $EXPLOR_AREA/Data/Pmc/Corpus/RBID.i -Sk "pubmed:17565970" \
| HfdSelect -Kh $EXPLOR_AREA/Data/Pmc/Corpus/biblio.hfd \
| NlmPubMed2Wicri -a CheneBelgiqueV1
| This area was generated with Dilib version V0.6.27. |  |