Evidence that cryptomonad chloroplasts evolved from photosynthetic eukaryotic endosymbionts
Unicellular algae of the division Cryptophyta possess an unusual subcellular compartment of unknown derivation. This compartment, which is partitioned off from the main cytoplasm by two membranes, contains a chloroplast and a small nucleus-like organelle surrounded by ribosomelike particles. Electro...
Gespeichert in:
| Veröffentlicht in: | Journal of cell science 1990-02, Vol.95 (2), p.303-308 |
|---|---|
| 1. Verfasser: | |
| Format: | Artikel |
| Sprache: | eng |
| Schlagworte: | |
| Online-Zugang: | Volltext |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| container_end_page | 308 |
|---|---|
| container_issue | 2 |
| container_start_page | 303 |
| container_title | Journal of cell science |
| container_volume | 95 |
| creator | MCFADDEN, G. I |
| description | Unicellular algae of the division Cryptophyta possess an unusual subcellular compartment of unknown derivation. This compartment, which is partitioned off from the main cytoplasm by two membranes, contains a chloroplast and a small nucleus-like organelle surrounded by ribosomelike particles. Electron-microscopic in situ hybridization has been used to show that the ribosomes in this subcellular compartment are eukaryotic. In addition, eukaryotic rRNA has been localised within the nucleus-like organelle, suggesting that the rRNAs may be transcribed from genes in this nucleus. This identification of a second, nucleuscontaining eukaryotic compartment within these cells supports the hypothesis that cryptomonads contain a reduced photosynthetic eukaryotic endosymbiont. |
| doi_str_mv | 10.1242/jcs.95.2.303 |
| format | Article |
| fullrecord | <record><control><sourceid>proquest_cross</sourceid><recordid>TN_cdi_proquest_miscellaneous_15903288</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>15903288</sourcerecordid><originalsourceid>FETCH-LOGICAL-c294t-29175e79ef2491b23608df65e5e623a9c8b792d792d270029e2be6db045ea2bd3</originalsourceid><addsrcrecordid>eNpFkE9PwzAMxSMEEmNw4wP0Aic6EqdpmiOaxh9pEhc4cYjS1FU72qYk2aR9ezo2iYNlS_756fkRcsvogkEGjxsbFkosYMEpPyMzlkmZKsblOZlRCixVgvNLchXChlIqQckZ-Vrt2goHi0lsTEys34_R9W4wVWKbznk3dibEkODOdTusktq7PhkbF13YD7HB2NoEt9_G793fOFTToi9bN8RwTS5q0wW8OfU5-XxefSxf0_X7y9vyaZ1aUFlMQTEpUCqsIVOsBJ7ToqpzgQJz4EbZopQKqkOBnP5QCCXmVUkzgQbKis_J_VF39O5niyHqvg0Wu84M6LZBM6Eoh6KYwIcjaL0LwWOtR9_2k3fNqD4kqKcEtRIa9JTghN-ddE2wpqu9GWwb_m9ULhnNFf8FfetzsQ</addsrcrecordid><sourcetype>Aggregation Database</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>15903288</pqid></control><display><type>article</type><title>Evidence that cryptomonad chloroplasts evolved from photosynthetic eukaryotic endosymbionts</title><source>Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals</source><source>Company of Biologists</source><creator>MCFADDEN, G. I</creator><creatorcontrib>MCFADDEN, G. I</creatorcontrib><description>Unicellular algae of the division Cryptophyta possess an unusual subcellular compartment of unknown derivation. This compartment, which is partitioned off from the main cytoplasm by two membranes, contains a chloroplast and a small nucleus-like organelle surrounded by ribosomelike particles. Electron-microscopic in situ hybridization has been used to show that the ribosomes in this subcellular compartment are eukaryotic. In addition, eukaryotic rRNA has been localised within the nucleus-like organelle, suggesting that the rRNAs may be transcribed from genes in this nucleus. This identification of a second, nucleuscontaining eukaryotic compartment within these cells supports the hypothesis that cryptomonads contain a reduced photosynthetic eukaryotic endosymbiont.</description><identifier>ISSN: 0021-9533</identifier><identifier>EISSN: 1477-9137</identifier><identifier>DOI: 10.1242/jcs.95.2.303</identifier><identifier>CODEN: JNCSAI</identifier><language>eng</language><publisher>Cambridge: Company of Biologists</publisher><subject>Biological and medical sciences ; Cell structures and functions ; Chloroplast, photosynthetic membrane and photosynthesis ; Cryptophyta ; Fundamental and applied biological sciences. Psychology ; Molecular and cellular biology</subject><ispartof>Journal of cell science, 1990-02, Vol.95 (2), p.303-308</ispartof><rights>1991 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c294t-29175e79ef2491b23608df65e5e623a9c8b792d792d270029e2be6db045ea2bd3</citedby><cites>FETCH-LOGICAL-c294t-29175e79ef2491b23608df65e5e623a9c8b792d792d270029e2be6db045ea2bd3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,3676,27923,27924</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=19671069$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>MCFADDEN, G. I</creatorcontrib><title>Evidence that cryptomonad chloroplasts evolved from photosynthetic eukaryotic endosymbionts</title><title>Journal of cell science</title><description>Unicellular algae of the division Cryptophyta possess an unusual subcellular compartment of unknown derivation. This compartment, which is partitioned off from the main cytoplasm by two membranes, contains a chloroplast and a small nucleus-like organelle surrounded by ribosomelike particles. Electron-microscopic in situ hybridization has been used to show that the ribosomes in this subcellular compartment are eukaryotic. In addition, eukaryotic rRNA has been localised within the nucleus-like organelle, suggesting that the rRNAs may be transcribed from genes in this nucleus. This identification of a second, nucleuscontaining eukaryotic compartment within these cells supports the hypothesis that cryptomonads contain a reduced photosynthetic eukaryotic endosymbiont.</description><subject>Biological and medical sciences</subject><subject>Cell structures and functions</subject><subject>Chloroplast, photosynthetic membrane and photosynthesis</subject><subject>Cryptophyta</subject><subject>Fundamental and applied biological sciences. Psychology</subject><subject>Molecular and cellular biology</subject><issn>0021-9533</issn><issn>1477-9137</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1990</creationdate><recordtype>article</recordtype><recordid>eNpFkE9PwzAMxSMEEmNw4wP0Aic6EqdpmiOaxh9pEhc4cYjS1FU72qYk2aR9ezo2iYNlS_756fkRcsvogkEGjxsbFkosYMEpPyMzlkmZKsblOZlRCixVgvNLchXChlIqQckZ-Vrt2goHi0lsTEys34_R9W4wVWKbznk3dibEkODOdTusktq7PhkbF13YD7HB2NoEt9_G793fOFTToi9bN8RwTS5q0wW8OfU5-XxefSxf0_X7y9vyaZ1aUFlMQTEpUCqsIVOsBJ7ToqpzgQJz4EbZopQKqkOBnP5QCCXmVUkzgQbKis_J_VF39O5niyHqvg0Wu84M6LZBM6Eoh6KYwIcjaL0LwWOtR9_2k3fNqD4kqKcEtRIa9JTghN-ddE2wpqu9GWwb_m9ULhnNFf8FfetzsQ</recordid><startdate>19900201</startdate><enddate>19900201</enddate><creator>MCFADDEN, G. I</creator><general>Company of Biologists</general><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>M7N</scope></search><sort><creationdate>19900201</creationdate><title>Evidence that cryptomonad chloroplasts evolved from photosynthetic eukaryotic endosymbionts</title><author>MCFADDEN, G. I</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c294t-29175e79ef2491b23608df65e5e623a9c8b792d792d270029e2be6db045ea2bd3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1990</creationdate><topic>Biological and medical sciences</topic><topic>Cell structures and functions</topic><topic>Chloroplast, photosynthetic membrane and photosynthesis</topic><topic>Cryptophyta</topic><topic>Fundamental and applied biological sciences. Psychology</topic><topic>Molecular and cellular biology</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>MCFADDEN, G. I</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Algology Mycology and Protozoology Abstracts (Microbiology C)</collection><jtitle>Journal of cell science</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>MCFADDEN, G. I</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Evidence that cryptomonad chloroplasts evolved from photosynthetic eukaryotic endosymbionts</atitle><jtitle>Journal of cell science</jtitle><date>1990-02-01</date><risdate>1990</risdate><volume>95</volume><issue>2</issue><spage>303</spage><epage>308</epage><pages>303-308</pages><issn>0021-9533</issn><eissn>1477-9137</eissn><coden>JNCSAI</coden><abstract>Unicellular algae of the division Cryptophyta possess an unusual subcellular compartment of unknown derivation. This compartment, which is partitioned off from the main cytoplasm by two membranes, contains a chloroplast and a small nucleus-like organelle surrounded by ribosomelike particles. Electron-microscopic in situ hybridization has been used to show that the ribosomes in this subcellular compartment are eukaryotic. In addition, eukaryotic rRNA has been localised within the nucleus-like organelle, suggesting that the rRNAs may be transcribed from genes in this nucleus. This identification of a second, nucleuscontaining eukaryotic compartment within these cells supports the hypothesis that cryptomonads contain a reduced photosynthetic eukaryotic endosymbiont.</abstract><cop>Cambridge</cop><pub>Company of Biologists</pub><doi>10.1242/jcs.95.2.303</doi><tpages>6</tpages></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 0021-9533 |
| ispartof | Journal of cell science, 1990-02, Vol.95 (2), p.303-308 |
| issn | 0021-9533 1477-9137 |
| language | eng |
| recordid | cdi_proquest_miscellaneous_15903288 |
| source | Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals; Company of Biologists |
| subjects | Biological and medical sciences Cell structures and functions Chloroplast, photosynthetic membrane and photosynthesis Cryptophyta Fundamental and applied biological sciences. Psychology Molecular and cellular biology |
| title | Evidence that cryptomonad chloroplasts evolved from photosynthetic eukaryotic endosymbionts |
| url | https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2025-01-11T12%3A16%3A34IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-proquest_cross&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=Evidence%20that%20cryptomonad%20chloroplasts%20evolved%20from%20photosynthetic%20eukaryotic%20endosymbionts&rft.jtitle=Journal%20of%20cell%20science&rft.au=MCFADDEN,%20G.%20I&rft.date=1990-02-01&rft.volume=95&rft.issue=2&rft.spage=303&rft.epage=308&rft.pages=303-308&rft.issn=0021-9533&rft.eissn=1477-9137&rft.coden=JNCSAI&rft_id=info:doi/10.1242/jcs.95.2.303&rft_dat=%3Cproquest_cross%3E15903288%3C/proquest_cross%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_pqid=15903288&rft_id=info:pmid/&rfr_iscdi=true |