Action spectrum for the induction of hyphal branches of an arbuscular mycorrhizal fungus: exposure sites versus branching sites.
Identifieur interne : 003845 ( Main/Corpus ); précédent : 003844; suivant : 003846Action spectrum for the induction of hyphal branches of an arbuscular mycorrhizal fungus: exposure sites versus branching sites.
Auteurs : Gerald Nagahashi ; David D. DoudsSource :
- Mycological research [ 0953-7562 ] ; 2003.
English descriptors
- KwdEn :
- MESH :
- chemical , physiology : Photoreceptors, Microbial.
- growth & development : Mycorrhizae.
- microbiology : Paspalum.
- physiology : Mycorrhizae.
- radiation effects : Mycorrhizae, Photoreceptors, Microbial.
- Light, Photobiology.
Abstract
The first action spectrum for a photo-induced response of an arbuscular mycorrhizal fungus is reported. At low light intensity, the responsive wavelengths for light-induced hyphal branching of the primary germ tube of Gigaspora gigantea were determined to be in the blue to uv-A range. The action spectrum showed the greatest stimulation of branching occurred around 390 nm although a shoulder was observed between 360-370 nm. A second major peak of light-induced branching occurred at 430 nm. The exposure of specific areas of the germ tube to high intensity blue light for a short period led to several interesting observations. By exposing 2 mm segments (0-2, 2-4, 4-6, etc.) or 3 mm segments away from the tip, it was determined that photoinduction of hyphal branches could occur anywhere along the axis of a growing germ tube except in the apical 2 mm. When 3 mm segments were exposed at greater distances from the tip (6-9, 9-12, and up to 33-36 mm), branches frequently formed in areas not directly exposed to light. The branches were usually in clusters which were spaced approximately 3 or 6 mm apart. Since light scattering could be ruled out, these results indicated that the exposure sites and sites of hyphal branching did not necessarily coincide and suggested the probable involvement of a second messenger during this blue light-induced event.
DOI: 10.1017/s0953756203008232
PubMed: 14563135
Links to Exploration step
pubmed:14563135Le document en format XML
<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en">Action spectrum for the induction of hyphal branches of an arbuscular mycorrhizal fungus: exposure sites versus branching sites.</title><author><name sortKey="Nagahashi, Gerald" sort="Nagahashi, Gerald" uniqKey="Nagahashi G" first="Gerald" last="Nagahashi">Gerald Nagahashi</name><affiliation><nlm:affiliation>USDA Agricultural Research Service, Eastern Regional Research Center, 600 East Mermaid Lane, Wyndmoor, PA 19038, USA. gnagahashi@arserrc.gov</nlm:affiliation></affiliation></author><author><name sortKey="Douds, David D" sort="Douds, David D" uniqKey="Douds D" first="David D" last="Douds">David D. Douds</name></author></titleStmt><publicationStmt><idno type="wicri:source">PubMed</idno><date when="2003">2003</date><idno type="RBID">pubmed:14563135</idno><idno type="pmid">14563135</idno><idno type="doi">10.1017/s0953756203008232</idno><idno type="wicri:Area/Main/Corpus">003845</idno><idno type="wicri:explorRef" wicri:stream="Main" wicri:step="Corpus" wicri:corpus="PubMed">003845</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en">Action spectrum for the induction of hyphal branches of an arbuscular mycorrhizal fungus: exposure sites versus branching sites.</title><author><name sortKey="Nagahashi, Gerald" sort="Nagahashi, Gerald" uniqKey="Nagahashi G" first="Gerald" last="Nagahashi">Gerald Nagahashi</name><affiliation><nlm:affiliation>USDA Agricultural Research Service, Eastern Regional Research Center, 600 East Mermaid Lane, Wyndmoor, PA 19038, USA. gnagahashi@arserrc.gov</nlm:affiliation></affiliation></author><author><name sortKey="Douds, David D" sort="Douds, David D" uniqKey="Douds D" first="David D" last="Douds">David D. Douds</name></author></analytic><series><title level="j">Mycological research</title><idno type="ISSN">0953-7562</idno><imprint><date when="2003" type="published">2003</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Light (MeSH)</term><term>Mycorrhizae (growth & development)</term><term>Mycorrhizae (physiology)</term><term>Mycorrhizae (radiation effects)</term><term>Paspalum (microbiology)</term><term>Photobiology (MeSH)</term><term>Photoreceptors, Microbial (physiology)</term><term>Photoreceptors, Microbial (radiation effects)</term></keywords><keywords scheme="MESH" type="chemical" qualifier="physiology" xml:lang="en"><term>Photoreceptors, Microbial</term></keywords><keywords scheme="MESH" qualifier="growth & development" xml:lang="en"><term>Mycorrhizae</term></keywords><keywords scheme="MESH" qualifier="microbiology" xml:lang="en"><term>Paspalum</term></keywords><keywords scheme="MESH" qualifier="physiology" xml:lang="en"><term>Mycorrhizae</term></keywords><keywords scheme="MESH" qualifier="radiation effects" xml:lang="en"><term>Mycorrhizae</term><term>Photoreceptors, Microbial</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Light</term><term>Photobiology</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">The first action spectrum for a photo-induced response of an arbuscular mycorrhizal fungus is reported. At low light intensity, the responsive wavelengths for light-induced hyphal branching of the primary germ tube of Gigaspora gigantea were determined to be in the blue to uv-A range. The action spectrum showed the greatest stimulation of branching occurred around 390 nm although a shoulder was observed between 360-370 nm. A second major peak of light-induced branching occurred at 430 nm. The exposure of specific areas of the germ tube to high intensity blue light for a short period led to several interesting observations. By exposing 2 mm segments (0-2, 2-4, 4-6, etc.) or 3 mm segments away from the tip, it was determined that photoinduction of hyphal branches could occur anywhere along the axis of a growing germ tube except in the apical 2 mm. When 3 mm segments were exposed at greater distances from the tip (6-9, 9-12, and up to 33-36 mm), branches frequently formed in areas not directly exposed to light. The branches were usually in clusters which were spaced approximately 3 or 6 mm apart. Since light scattering could be ruled out, these results indicated that the exposure sites and sites of hyphal branching did not necessarily coincide and suggested the probable involvement of a second messenger during this blue light-induced event.</div></front></TEI><pubmed><MedlineCitation Status="MEDLINE" Owner="NLM"><PMID Version="1">14563135</PMID><DateCompleted><Year>2004</Year><Month>01</Month><Day>05</Day></DateCompleted><DateRevised><Year>2019</Year><Month>11</Month><Day>08</Day></DateRevised><Article PubModel="Print"><Journal><ISSN IssnType="Print">0953-7562</ISSN><JournalIssue CitedMedium="Print"><Volume>107</Volume><Issue>Pt 9</Issue><PubDate><Year>2003</Year><Month>Sep</Month></PubDate></JournalIssue><Title>Mycological research</Title><ISOAbbreviation>Mycol Res</ISOAbbreviation></Journal><ArticleTitle>Action spectrum for the induction of hyphal branches of an arbuscular mycorrhizal fungus: exposure sites versus branching sites.</ArticleTitle><Pagination><MedlinePgn>1075-82</MedlinePgn></Pagination><Abstract><AbstractText>The first action spectrum for a photo-induced response of an arbuscular mycorrhizal fungus is reported. At low light intensity, the responsive wavelengths for light-induced hyphal branching of the primary germ tube of Gigaspora gigantea were determined to be in the blue to uv-A range. The action spectrum showed the greatest stimulation of branching occurred around 390 nm although a shoulder was observed between 360-370 nm. A second major peak of light-induced branching occurred at 430 nm. The exposure of specific areas of the germ tube to high intensity blue light for a short period led to several interesting observations. By exposing 2 mm segments (0-2, 2-4, 4-6, etc.) or 3 mm segments away from the tip, it was determined that photoinduction of hyphal branches could occur anywhere along the axis of a growing germ tube except in the apical 2 mm. When 3 mm segments were exposed at greater distances from the tip (6-9, 9-12, and up to 33-36 mm), branches frequently formed in areas not directly exposed to light. The branches were usually in clusters which were spaced approximately 3 or 6 mm apart. Since light scattering could be ruled out, these results indicated that the exposure sites and sites of hyphal branching did not necessarily coincide and suggested the probable involvement of a second messenger during this blue light-induced event.</AbstractText></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Nagahashi</LastName><ForeName>Gerald</ForeName><Initials>G</Initials><AffiliationInfo><Affiliation>USDA Agricultural Research Service, Eastern Regional Research Center, 600 East Mermaid Lane, Wyndmoor, PA 19038, USA. gnagahashi@arserrc.gov</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Douds</LastName><ForeName>David D</ForeName><Initials>DD</Initials><Suffix>Jr</Suffix></Author></AuthorList><Language>eng</Language><PublicationTypeList><PublicationType UI="D016428">Journal Article</PublicationType></PublicationTypeList></Article><MedlineJournalInfo><Country>England</Country><MedlineTA>Mycol Res</MedlineTA><NlmUniqueID>8913481</NlmUniqueID><ISSNLinking>0953-7562</ISSNLinking></MedlineJournalInfo><ChemicalList><Chemical><RegistryNumber>0</RegistryNumber><NameOfSubstance UI="D020283">Photoreceptors, Microbial</NameOfSubstance></Chemical></ChemicalList><CitationSubset>IM</CitationSubset><MeshHeadingList><MeshHeading><DescriptorName UI="D008027" MajorTopicYN="N">Light</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D038821" MajorTopicYN="N">Mycorrhizae</DescriptorName><QualifierName UI="Q000254" MajorTopicYN="Y">growth & development</QualifierName><QualifierName UI="Q000502" MajorTopicYN="N">physiology</QualifierName><QualifierName UI="Q000528" MajorTopicYN="Y">radiation effects</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D031781" MajorTopicYN="N">Paspalum</DescriptorName><QualifierName UI="Q000382" MajorTopicYN="N">microbiology</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D018462" MajorTopicYN="N">Photobiology</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D020283" MajorTopicYN="N">Photoreceptors, Microbial</DescriptorName><QualifierName UI="Q000502" MajorTopicYN="N">physiology</QualifierName><QualifierName UI="Q000528" MajorTopicYN="N">radiation effects</QualifierName></MeshHeading></MeshHeadingList></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="pubmed"><Year>2003</Year><Month>10</Month><Day>18</Day><Hour>5</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>2003</Year><Month>12</Month><Day>3</Day><Hour>5</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="entrez"><Year>2003</Year><Month>10</Month><Day>18</Day><Hour>5</Hour><Minute>0</Minute></PubMedPubDate></History><PublicationStatus>ppublish</PublicationStatus><ArticleIdList><ArticleId IdType="pubmed">14563135</ArticleId><ArticleId IdType="doi">10.1017/s0953756203008232</ArticleId></ArticleIdList></PubmedData></pubmed></record>Pour manipuler ce document sous Unix (Dilib)
EXPLOR_STEP=$WICRI_ROOT/Bois/explor/MycorrhizaeV1/Data/Main/Corpus
HfdSelect -h $EXPLOR_STEP/biblio.hfd -nk 003845 | SxmlIndent | more
Ou
HfdSelect -h $EXPLOR_AREA/Data/Main/Corpus/biblio.hfd -nk 003845 | SxmlIndent | more
Pour mettre un lien sur cette page dans le réseau Wicri
{{Explor lien
|wiki= Bois
|area= MycorrhizaeV1
|flux= Main
|étape= Corpus
|type= RBID
|clé= pubmed:14563135
|texte= Action spectrum for the induction of hyphal branches of an arbuscular mycorrhizal fungus: exposure sites versus branching sites.
}}
Pour générer des pages wiki
HfdIndexSelect -h $EXPLOR_AREA/Data/Main/Corpus/RBID.i -Sk "pubmed:14563135" \
| HfdSelect -Kh $EXPLOR_AREA/Data/Main/Corpus/biblio.hfd \
| NlmPubMed2Wicri -a MycorrhizaeV1
| This area was generated with Dilib version V0.6.37. |  |