Branched absorbing structures (BAS): a feature of the extraradical mycelium of symbiotic arbuscular mycorrhizal fungi
The present work describes the morphogenesis and cytological characteristics of ‘branched absorbing structures’ (BAS, formely named arbuscule-like structures, ALS), small groups of dichotomous hyphae formed by the extraradical mycelium of arbuscular mycorrhizal (AM) fungi. Monoxenic cultures of the...
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| Veröffentlicht in: | The New phytologist 1998-06, Vol.139 (2), p.375-388 |
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| creator | BAGO, B. AZCÓN-AGUILAR, C. GOULET, A. PICHÉ, Y. |
| description | The present work describes the morphogenesis and cytological characteristics
of ‘branched absorbing structures’
(BAS, formely named arbuscule-like structures, ALS), small groups of
dichotomous hyphae formed by the
extraradical mycelium of arbuscular mycorrhizal (AM) fungi. Monoxenic cultures
of the AM fungus Glomus intraradices Smith & Schenck and tomato
(Lycopersicum esculentum Mill.) roots allowed the continuous,
non-destructive study of BAS development. These structures were not
observed in axenic cultures of the fungus under
different nutritional conditions or in unsuccessful (asymbiotic)
monoxenic cultures. However, extraradical
mycelium of G. intraradices formed BAS immediately after
fungal penetration of the host root and establishment
of the symbiosis. The average BAS development time was 7 d under
our culture conditions, after which they
degenerated, becoming empty septate structures. Certain BAS were
closely associated with spore formation,
appearing at the spore's substending hypha. Branches of these
spore-associated BAS (spore-BAS) usually formed
spores. Electron microscopy studies revealed that BAS and arbuscules
show several ultrastructural similarities.
The possible role of BAS in nutrient uptake by the mycorrhizal plant is
discussed. |
| doi_str_mv | 10.1046/j.1469-8137.1998.00199.x |
| format | Article |
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of ‘branched absorbing structures’
(BAS, formely named arbuscule-like structures, ALS), small groups of
dichotomous hyphae formed by the
extraradical mycelium of arbuscular mycorrhizal (AM) fungi. Monoxenic cultures
of the AM fungus Glomus intraradices Smith & Schenck and tomato
(Lycopersicum esculentum Mill.) roots allowed the continuous,
non-destructive study of BAS development. These structures were not
observed in axenic cultures of the fungus under
different nutritional conditions or in unsuccessful (asymbiotic)
monoxenic cultures. However, extraradical
mycelium of G. intraradices formed BAS immediately after
fungal penetration of the host root and establishment
of the symbiosis. The average BAS development time was 7 d under
our culture conditions, after which they
degenerated, becoming empty septate structures. Certain BAS were
closely associated with spore formation,
appearing at the spore's substending hypha. Branches of these
spore-associated BAS (spore-BAS) usually formed
spores. Electron microscopy studies revealed that BAS and arbuscules
show several ultrastructural similarities.
The possible role of BAS in nutrient uptake by the mycorrhizal plant is
discussed.</description><identifier>ISSN: 0028-646X</identifier><identifier>EISSN: 1469-8137</identifier><identifier>DOI: 10.1046/j.1469-8137.1998.00199.x</identifier><identifier>CODEN: NEPHAV</identifier><language>eng</language><publisher>Cambridge, UK: Cambridge University Press</publisher><subject>Arbuscular mycorrhizas ; Axenic culture ; Biological and medical sciences ; branched absorbing structures (BAS) ; Cell walls ; external mycelium ; Fundamental and applied biological sciences. Psychology ; Fungal spores ; Fungi ; Glomus intraradices ; Glomus intraradices Smith & Schenck ; Hyphae ; Lycopersicon esculentum ; monoxenic culture ; Mycelium ; Mycorrhizal fungi ; Parasitism and symbiosis ; Plant physiology and development ; Plant roots ; Plants ; Symbiosis</subject><ispartof>The New phytologist, 1998-06, Vol.139 (2), p.375-388</ispartof><rights>Trustees of New Phytologist 1998</rights><rights>Copyright 1998 Trustees of New Phytologist</rights><rights>1998 INIST-CNRS</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c5589-15bc807231ed93088d2e21809177c509a16388bc4e441de82fb6ffd43b710ef03</citedby></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://www.jstor.org/stable/pdf/2588307$$EPDF$$P50$$Gjstor$$H</linktopdf><linktohtml>$$Uhttps://www.jstor.org/stable/2588307$$EHTML$$P50$$Gjstor$$H</linktohtml><link.rule.ids>314,780,784,803,1416,1432,27923,27924,45573,45574,46408,46832,58016,58249</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=2310327$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>BAGO, B.</creatorcontrib><creatorcontrib>AZCÓN-AGUILAR, C.</creatorcontrib><creatorcontrib>GOULET, A.</creatorcontrib><creatorcontrib>PICHÉ, Y.</creatorcontrib><title>Branched absorbing structures (BAS): a feature of the extraradical mycelium of symbiotic arbuscular mycorrhizal fungi</title><title>The New phytologist</title><addtitle>New Phytol</addtitle><description>The present work describes the morphogenesis and cytological characteristics
of ‘branched absorbing structures’
(BAS, formely named arbuscule-like structures, ALS), small groups of
dichotomous hyphae formed by the
extraradical mycelium of arbuscular mycorrhizal (AM) fungi. Monoxenic cultures
of the AM fungus Glomus intraradices Smith & Schenck and tomato
(Lycopersicum esculentum Mill.) roots allowed the continuous,
non-destructive study of BAS development. These structures were not
observed in axenic cultures of the fungus under
different nutritional conditions or in unsuccessful (asymbiotic)
monoxenic cultures. However, extraradical
mycelium of G. intraradices formed BAS immediately after
fungal penetration of the host root and establishment
of the symbiosis. The average BAS development time was 7 d under
our culture conditions, after which they
degenerated, becoming empty septate structures. Certain BAS were
closely associated with spore formation,
appearing at the spore's substending hypha. Branches of these
spore-associated BAS (spore-BAS) usually formed
spores. Electron microscopy studies revealed that BAS and arbuscules
show several ultrastructural similarities.
The possible role of BAS in nutrient uptake by the mycorrhizal plant is
discussed.</description><subject>Arbuscular mycorrhizas</subject><subject>Axenic culture</subject><subject>Biological and medical sciences</subject><subject>branched absorbing structures (BAS)</subject><subject>Cell walls</subject><subject>external mycelium</subject><subject>Fundamental and applied biological sciences. Psychology</subject><subject>Fungal spores</subject><subject>Fungi</subject><subject>Glomus intraradices</subject><subject>Glomus intraradices Smith & Schenck</subject><subject>Hyphae</subject><subject>Lycopersicon esculentum</subject><subject>monoxenic culture</subject><subject>Mycelium</subject><subject>Mycorrhizal fungi</subject><subject>Parasitism and symbiosis</subject><subject>Plant physiology and development</subject><subject>Plant roots</subject><subject>Plants</subject><subject>Symbiosis</subject><issn>0028-646X</issn><issn>1469-8137</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1998</creationdate><recordtype>article</recordtype><recordid>eNqNkM1u1DAUhSMEEkPhDVh4gRAsEq7z61Rs2gooUgVIgMTOsh17xlESt9exmOHpsZlRWcLqWr7nHB9_WUYoFBTq9s1Y0Lrtc0arrqB9zwqAOIr9g2xzv3iYbQBKlrd1--Nx9sT7EQD6pi03WbhEsaidHoiQ3qG0y5b4FYNaA2pPXl1efH19TgQxWqQb4gxZd5ro_YoCxWCVmMh8UHqyYU5Lf5ildatVRKAMXoVJYBI4xJ39FcUmLFv7NHtkxOT1s9M8y76_f_ft6jq_-fzh49XFTa6ahvU5baRi0JUV1UNfAWNDqUvKoKddpxroBW0rxqSqdV3TQbPSyNaYoa5kR0EbqM6yl8fcW3R3QfuVz9bHspNYtAue066JSlZHITsKFTrvURt-i3YWeOAUeOLMR55w8oSTJ878D2e-j9YXpzeEjzRM4mn9vT-Wh6rsouztUfbTTvrw3_H805freIj250f76FeHf9MbxipI6een_mKWaIet5qMLuES4__7Bb3d6rU4</recordid><startdate>199806</startdate><enddate>199806</enddate><creator>BAGO, B.</creator><creator>AZCÓN-AGUILAR, C.</creator><creator>GOULET, A.</creator><creator>PICHÉ, Y.</creator><general>Cambridge University Press</general><general>Blackwell</general><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7SN</scope><scope>7T7</scope><scope>8FD</scope><scope>C1K</scope><scope>FR3</scope><scope>M7N</scope><scope>P64</scope></search><sort><creationdate>199806</creationdate><title>Branched absorbing structures (BAS): a feature of the extraradical mycelium of symbiotic arbuscular mycorrhizal fungi</title><author>BAGO, B. ; AZCÓN-AGUILAR, C. ; GOULET, A. ; PICHÉ, Y.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c5589-15bc807231ed93088d2e21809177c509a16388bc4e441de82fb6ffd43b710ef03</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1998</creationdate><topic>Arbuscular mycorrhizas</topic><topic>Axenic culture</topic><topic>Biological and medical sciences</topic><topic>branched absorbing structures (BAS)</topic><topic>Cell walls</topic><topic>external mycelium</topic><topic>Fundamental and applied biological sciences. Psychology</topic><topic>Fungal spores</topic><topic>Fungi</topic><topic>Glomus intraradices</topic><topic>Glomus intraradices Smith & Schenck</topic><topic>Hyphae</topic><topic>Lycopersicon esculentum</topic><topic>monoxenic culture</topic><topic>Mycelium</topic><topic>Mycorrhizal fungi</topic><topic>Parasitism and symbiosis</topic><topic>Plant physiology and development</topic><topic>Plant roots</topic><topic>Plants</topic><topic>Symbiosis</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>BAGO, B.</creatorcontrib><creatorcontrib>AZCÓN-AGUILAR, C.</creatorcontrib><creatorcontrib>GOULET, A.</creatorcontrib><creatorcontrib>PICHÉ, Y.</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Ecology Abstracts</collection><collection>Industrial and Applied Microbiology Abstracts (Microbiology A)</collection><collection>Technology Research Database</collection><collection>Environmental Sciences and Pollution Management</collection><collection>Engineering Research Database</collection><collection>Algology Mycology and Protozoology Abstracts (Microbiology C)</collection><collection>Biotechnology and BioEngineering Abstracts</collection><jtitle>The New phytologist</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>BAGO, B.</au><au>AZCÓN-AGUILAR, C.</au><au>GOULET, A.</au><au>PICHÉ, Y.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Branched absorbing structures (BAS): a feature of the extraradical mycelium of symbiotic arbuscular mycorrhizal fungi</atitle><jtitle>The New phytologist</jtitle><addtitle>New Phytol</addtitle><date>1998-06</date><risdate>1998</risdate><volume>139</volume><issue>2</issue><spage>375</spage><epage>388</epage><pages>375-388</pages><issn>0028-646X</issn><eissn>1469-8137</eissn><coden>NEPHAV</coden><abstract>The present work describes the morphogenesis and cytological characteristics
of ‘branched absorbing structures’
(BAS, formely named arbuscule-like structures, ALS), small groups of
dichotomous hyphae formed by the
extraradical mycelium of arbuscular mycorrhizal (AM) fungi. Monoxenic cultures
of the AM fungus Glomus intraradices Smith & Schenck and tomato
(Lycopersicum esculentum Mill.) roots allowed the continuous,
non-destructive study of BAS development. These structures were not
observed in axenic cultures of the fungus under
different nutritional conditions or in unsuccessful (asymbiotic)
monoxenic cultures. However, extraradical
mycelium of G. intraradices formed BAS immediately after
fungal penetration of the host root and establishment
of the symbiosis. The average BAS development time was 7 d under
our culture conditions, after which they
degenerated, becoming empty septate structures. Certain BAS were
closely associated with spore formation,
appearing at the spore's substending hypha. Branches of these
spore-associated BAS (spore-BAS) usually formed
spores. Electron microscopy studies revealed that BAS and arbuscules
show several ultrastructural similarities.
The possible role of BAS in nutrient uptake by the mycorrhizal plant is
discussed.</abstract><cop>Cambridge, UK</cop><pub>Cambridge University Press</pub><doi>10.1046/j.1469-8137.1998.00199.x</doi><tpages>14</tpages><oa>free_for_read</oa></addata></record> |
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| ispartof | The New phytologist, 1998-06, Vol.139 (2), p.375-388 |
| issn | 0028-646X 1469-8137 |
| language | eng |
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| source | Wiley Online Library Journals Frontfile Complete; JSTOR Archive Collection A-Z Listing; Wiley Free Content; EZB-FREE-00999 freely available EZB journals |
| subjects | Arbuscular mycorrhizas Axenic culture Biological and medical sciences branched absorbing structures (BAS) Cell walls external mycelium Fundamental and applied biological sciences. Psychology Fungal spores Fungi Glomus intraradices Glomus intraradices Smith & Schenck Hyphae Lycopersicon esculentum monoxenic culture Mycelium Mycorrhizal fungi Parasitism and symbiosis Plant physiology and development Plant roots Plants Symbiosis |
| title | Branched absorbing structures (BAS): a feature of the extraradical mycelium of symbiotic arbuscular mycorrhizal fungi |
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