{"id":"https://openalex.org/W2063728022","doi":"https://doi.org/10.2307/3558326","title":"Architecture of the sperm cell of Psilotum","display_name":"Architecture of the sperm cell of Psilotum","publication_year":2001,"publication_date":"2001-07-01","ids":{"openalex":"https://openalex.org/W2063728022","doi":"https://doi.org/10.2307/3558326","mag":"2063728022","pmid":"https://pubmed.ncbi.nlm.nih.gov/11454615"},"language":"en","primary_location":{"id":"doi:10.2307/3558326","doi":"https://doi.org/10.2307/3558326","is_oa":true,"landing_page_url":"https://doi.org/10.2307/3558326","pdf_url":"https://onlinelibrary.wiley.com/doi/pdfdirect/10.2307/3558326","source":{"id":"https://openalex.org/S205086949","display_name":"American Journal of Botany","issn_l":"0002-9122","issn":["0002-9122","1537-2197"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["cwts-core","dongbi-b","jufo-1","ki-jl-1","medline","norway-1","poland-100","russia-white-list-1","vabb-shw"],"host_organization":"https://openalex.org/P4310320595","host_organization_name":"Wiley","host_organization_lineage":["https://openalex.org/P4310320595"],"host_organization_lineage_names":["Wiley"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"American Journal of Botany","raw_type":"journal-article"},"volume":null,"type":"article","indexed_in":["crossref","pubmed"],"open_access":{"is_oa":true,"oa_status":"bronze","oa_url":"https://onlinelibrary.wiley.com/doi/pdfdirect/10.2307/3558326","any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5036823648","display_name":"KAREN SUE RENZAGLIA","orcid":"https://orcid.org/0000-0002-1406-2646","observed_orcids":["https://orcid.org/0000-0002-1406-2646"]},"institutions":[{"id":"https://openalex.org/I110378019","display_name":"Southern Illinois University Carbondale","ror":"https://ror.org/049kefs16","country_code":"US","type":"education","lineage":["https://openalex.org/I110378019","https://openalex.org/I2801502357"]},{"id":"https://openalex.org/I2801502357","display_name":"Southern Illinois University System","ror":"https://ror.org/05vz28418","country_code":"US","type":"education","lineage":["https://openalex.org/I2801502357"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Karen Sue Renzaglia","raw_affiliation_strings":["2Department of Plant Biology and Center for Systematic Biology, Southern Illinois University, Carbondale, Illinois 62901\u20136509 USA","Author for reprint requests ( [email protected] ; FAX: 618-453-3441)","Author for reprint requests ([email protected]","FAX: 618-453-3441)"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"2Department of Plant Biology and Center for Systematic Biology, Southern Illinois University, Carbondale, Illinois 62901\u20136509 USA","institution_ids":["https://openalex.org/I110378019","https://openalex.org/I2801502357"]},{"raw_affiliation_string":"Author for reprint requests ( [email protected] ; FAX: 618-453-3441)","institution_ids":[]},{"raw_affiliation_string":"Author for reprint requests ([email protected]","institution_ids":[]},{"raw_affiliation_string":"FAX: 618-453-3441)","institution_ids":[]}]},{"author_position":"middle","author":{"id":null,"display_name":"Thomas H. Johnson","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I110378019","display_name":"Southern Illinois University Carbondale","ror":"https://ror.org/049kefs16","country_code":"US","type":"education","lineage":["https://openalex.org/I110378019","https://openalex.org/I2801502357"]},{"id":"https://openalex.org/I2801502357","display_name":"Southern Illinois University System","ror":"https://ror.org/05vz28418","country_code":"US","type":"education","lineage":["https://openalex.org/I2801502357"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Thomas H. Johnson","raw_affiliation_strings":["2Department of Plant Biology and Center for Systematic Biology, Southern Illinois University, Carbondale, Illinois 62901\u20136509 USA"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"2Department of Plant Biology and Center for Systematic Biology, Southern Illinois University, Carbondale, Illinois 62901\u20136509 USA","institution_ids":["https://openalex.org/I110378019","https://openalex.org/I2801502357"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5032845393","display_name":"Hilarie Dee Gates","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I110378019","display_name":"Southern Illinois University Carbondale","ror":"https://ror.org/049kefs16","country_code":"US","type":"education","lineage":["https://openalex.org/I110378019","https://openalex.org/I2801502357"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Hilarie Dee Gates","raw_affiliation_strings":["3Micro-Imaging and Analysis Center, Southern Illinois University, Carbondale, Illinois 62901\u20134402 USA"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"3Micro-Imaging and Analysis Center, Southern Illinois University, Carbondale, Illinois 62901\u20134402 USA","institution_ids":["https://openalex.org/I110378019"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5028020866","display_name":"Dean P. Whittier","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I200719446","display_name":"Vanderbilt University","ror":"https://ror.org/02vm5rt34","country_code":"US","type":"education","lineage":["https://openalex.org/I200719446"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Dean P. Whittier","raw_affiliation_strings":["4Department of Biology, Vanderbilt University, Nashville, Tennessee 37235\u20131565 USA"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"4Department of Biology, Vanderbilt University, Nashville, Tennessee 37235\u20131565 USA","institution_ids":["https://openalex.org/I200719446"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":3,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":{"value":2660,"currency":"USD","value_usd":2660},"apc_paid":null,"fwci":2.9547,"has_fulltext":true,"cited_by_count":23,"citation_normalized_percentile":{"value":0.90165447,"is_in_top_1_percent":false,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":89,"max":97},"biblio":{"volume":"88","issue":"7","first_page":"1151","last_page":"1163"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T12359","display_name":"Fern and Epiphyte Biology","score":0.9535999894142151,"subfield":{"id":"https://openalex.org/subfields/1105","display_name":"Ecology, Evolution, Behavior and Systematics"},"field":{"id":"https://openalex.org/fields/11","display_name":"Agricultural and Biological Sciences"},"domain":{"id":"https://openalex.org/domains/1","display_name":"Life Sciences"}},"topics":[{"id":"https://openalex.org/T12359","display_name":"Fern and Epiphyte Biology","score":0.9535999894142151,"subfield":{"id":"https://openalex.org/subfields/1105","display_name":"Ecology, Evolution, Behavior and Systematics"},"field":{"id":"https://openalex.org/fields/11","display_name":"Agricultural and Biological Sciences"},"domain":{"id":"https://openalex.org/domains/1","display_name":"Life Sciences"}},{"id":"https://openalex.org/T11927","display_name":"Plant Reproductive Biology","score":0.03290000185370445,"subfield":{"id":"https://openalex.org/subfields/1312","display_name":"Molecular Biology"},"field":{"id":"https://openalex.org/fields/13","display_name":"Biochemistry, Genetics and Molecular Biology"},"domain":{"id":"https://openalex.org/domains/1","display_name":"Life Sciences"}},{"id":"https://openalex.org/T10385","display_name":"Plant Diversity and Evolution","score":0.00430000014603138,"subfield":{"id":"https://openalex.org/subfields/1105","display_name":"Ecology, Evolution, Behavior and Systematics"},"field":{"id":"https://openalex.org/fields/11","display_name":"Agricultural and Biological Sciences"},"domain":{"id":"https://openalex.org/domains/1","display_name":"Life Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/psilotum-nudum","display_name":"Psilotum nudum","score":0.9980000257492065},{"id":"https://openalex.org/keywords/spermatozoids","display_name":"spermatozoids","score":0.765999972820282},{"id":"https://openalex.org/keywords/ferns","display_name":"ferns","score":0.6330000162124634},{"id":"https://openalex.org/keywords/equisetum","display_name":"Equisetum","score":0.984000027179718},{"id":"https://openalex.org/keywords/land-plant-evolution","display_name":"land plant evolution","score":0.7269999980926514},{"id":"https://openalex.org/keywords/basal-bodies","display_name":"basal bodies","score":0.6399999856948853},{"id":"https://openalex.org/keywords/flagella","display_name":"flagella","score":0.8309999704360962},{"id":"https://openalex.org/keywords/microtubules","display_name":"microtubules","score":0.8539999723434448},{"id":"https://openalex.org/keywords/sperm-nucleus","display_name":"sperm nucleus","score":0.46799999475479126},{"id":"https://openalex.org/keywords/sperm-mitochondria","display_name":"sperm mitochondria","score":0.4519999921321869}],"concepts":[{"id":"https://openalex.org/C86803240","wikidata":"https://www.wikidata.org/wiki/Q420","display_name":"Biology","level":0,"score":0.9596433639526367},{"id":"https://openalex.org/C2781087480","wikidata":"https://www.wikidata.org/wiki/Q17145","display_name":"Sperm","level":2,"score":0.6475991010665894},{"id":"https://openalex.org/C59822182","wikidata":"https://www.wikidata.org/wiki/Q441","display_name":"Botany","level":1,"score":0.37731432914733887},{"id":"https://openalex.org/C78458016","wikidata":"https://www.wikidata.org/wiki/Q840400","display_name":"Evolutionary biology","level":1,"score":0.3521469831466675},{"id":"https://openalex.org/C90856448","wikidata":"https://www.wikidata.org/wiki/Q431","display_name":"Zoology","level":1,"score":0.32073840498924255}],"mesh":[],"locations_count":2,"locations":[{"id":"doi:10.2307/3558326","doi":"https://doi.org/10.2307/3558326","is_oa":true,"landing_page_url":"https://doi.org/10.2307/3558326","pdf_url":"https://onlinelibrary.wiley.com/doi/pdfdirect/10.2307/3558326","source":{"id":"https://openalex.org/S205086949","display_name":"American Journal of Botany","issn_l":"0002-9122","issn":["0002-9122","1537-2197"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["cwts-core","dongbi-b","jufo-1","ki-jl-1","medline","norway-1","poland-100","russia-white-list-1","vabb-shw"],"host_organization":"https://openalex.org/P4310320595","host_organization_name":"Wiley","host_organization_lineage":["https://openalex.org/P4310320595"],"host_organization_lineage_names":["Wiley"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"American Journal of Botany","raw_type":"journal-article"},{"id":"pmid:11454615","doi":null,"is_oa":false,"landing_page_url":"https://pubmed.ncbi.nlm.nih.gov/11454615","pdf_url":null,"source":{"id":"https://openalex.org/S4306525036","display_name":"PubMed","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I1299303238","host_organization_name":"National Institutes of Health","host_organization_lineage":["https://openalex.org/I1299303238"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"American journal of botany","raw_type":"Journal Article"}],"best_oa_location":{"id":"doi:10.2307/3558326","doi":"https://doi.org/10.2307/3558326","is_oa":true,"landing_page_url":"https://doi.org/10.2307/3558326","pdf_url":"https://onlinelibrary.wiley.com/doi/pdfdirect/10.2307/3558326","source":{"id":"https://openalex.org/S205086949","display_name":"American Journal of Botany","issn_l":"0002-9122","issn":["0002-9122","1537-2197"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["cwts-core","dongbi-b","jufo-1","ki-jl-1","medline","norway-1","poland-100","russia-white-list-1","vabb-shw"],"host_organization":"https://openalex.org/P4310320595","host_organization_name":"Wiley","host_organization_lineage":["https://openalex.org/P4310320595"],"host_organization_lineage_names":["Wiley"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"American Journal of Botany","raw_type":"journal-article"},"sustainable_development_goals":[],"study_designs":[],"awards":[{"id":"https://openalex.org/G6566117742","display_name":"Spermatogenesis in \"Pteridophytes\":  Ultrastructure         Differentiation and Phylogeny","funder_award_id":"9527735","funder_id":"https://openalex.org/F4320306076","funder_display_name":"National Science Foundation"},{"id":"https://openalex.org/G8097109687","display_name":null,"funder_award_id":"DEB\u20109207626","funder_id":"https://openalex.org/F4320306076","funder_display_name":"National Science Foundation"}],"funders":[{"id":"https://openalex.org/F4320306076","display_name":"National Science Foundation","ror":"https://ror.org/021nxhr62"},{"id":"https://openalex.org/F4320312882","display_name":"Illinois State Academy of Science","ror":"https://ror.org/03fb3j069"},{"id":"https://openalex.org/F4320333141","display_name":"Microscopy Society of America","ror":"https://ror.org/02vdmpp49"}],"has_content":{"pdf":true,"grobid_xml":true},"content_urls":{"pdf":"https://content.openalex.org/works/W2063728022.pdf","grobid_xml":"https://content.openalex.org/works/W2063728022.grobid-xml"},"referenced_works_count":44,"referenced_works":["https://openalex.org/W27827543","https://openalex.org/W121492804","https://openalex.org/W1527626910","https://openalex.org/W1663995113","https://openalex.org/W1816543726","https://openalex.org/W1967590237","https://openalex.org/W1971279570","https://openalex.org/W1974236672","https://openalex.org/W1979188653","https://openalex.org/W1981765383","https://openalex.org/W1982883475","https://openalex.org/W1986218799","https://openalex.org/W1999379679","https://openalex.org/W2000998459","https://openalex.org/W2007463119","https://openalex.org/W2009142368","https://openalex.org/W2009979617","https://openalex.org/W2016765127","https://openalex.org/W2030166236","https://openalex.org/W2041246058","https://openalex.org/W2050211118","https://openalex.org/W2051118527","https://openalex.org/W2059531116","https://openalex.org/W2065652334","https://openalex.org/W2074123252","https://openalex.org/W2079036500","https://openalex.org/W2082064355","https://openalex.org/W2083592624","https://openalex.org/W2084674501","https://openalex.org/W2088056852","https://openalex.org/W2091724534","https://openalex.org/W2101891826","https://openalex.org/W2107106005","https://openalex.org/W2128382228","https://openalex.org/W2137572862","https://openalex.org/W2157230160","https://openalex.org/W2166176470","https://openalex.org/W2171018006","https://openalex.org/W2314698195","https://openalex.org/W2318036881","https://openalex.org/W2319090814","https://openalex.org/W2331364440","https://openalex.org/W2335001793","https://openalex.org/W2435897623"],"related_works":["https://openalex.org/W2060828469","https://openalex.org/W2058297669","https://openalex.org/W2079036500","https://openalex.org/W2050745392","https://openalex.org/W2050211118","https://openalex.org/W3040386591","https://openalex.org/W1987424150","https://openalex.org/W2373447581","https://openalex.org/W1947837925","https://openalex.org/W2314698195"],"abstract_inverted_index":{"In":[0],"this":[1,176,208],"correlated":[2],"SEM":[3],"(scanning":[4],"electron":[5,10],"microscope)":[6,11],"and":[7,41,61,79,87,132,148,185,189,200,204,228,238,266],"TEM":[8],"(transmission":[9],"investigation,":[12],"we":[13],"describe":[14],"architectural":[15,242],"details":[16,179],"of":[17,22,36,46,56,68,126,136,170,175,180,187,191,198,222,235,241],"the":[18,34,81,95,111,117,121,143,153,159,167,171,181,192,214,231,239],"multiflagellated":[19],"sperm":[20,47],"cell":[21,112],"Psilotum":[23,37,57,217,236,254],"nudum.":[24],"Comparisons":[25],"with":[26,84,158,245,260],"other":[27],"pteridophytes":[28],"are":[29,108,150,194],"made":[30],"to":[31,70,250,264],"(1)":[32],"assess":[33],"placement":[35],"among":[38],"pteridophyte":[39],"taxa":[40],"(2)":[42],"evaluate":[43],"structural":[44],"modifications":[45],"cells":[48],"during":[49],"land":[50],"plant":[51],"evolution.":[52],"The":[53,73],"released":[54],"spermatozoid":[55],"coils":[58,83],"2.0":[59],"revolutions":[60],"is":[62,76,98,120,219,255],"outlined":[63],"by":[64,113,196],"a":[65,127,163,220],"parallel":[66],"band":[67,135,165],"up":[69],"190":[71],"microtubules.":[72,137],"elongated":[74,139],"nucleus":[75],"highly":[77],"compacted":[78],"parallels":[80],"cellular":[82],"numerous":[85],"mitochondria":[86,149],"starch-laden":[88],"plastids":[89],"distributed":[90],"along":[91,152],"its":[92],"length.":[93],"Along":[94],"anterior":[96,140,154],"coil":[97,155],"an":[99,133,223,256],"elaborate":[100],"locomotory":[101,160,182],"apparatus":[102],"that":[103,107,216,225,253],"includes":[104,226],"\u223c36":[105],"flagella":[106],"inserted":[109],"into":[110],"basal":[114,118],"bodies.":[115],"Subtending":[116],"bodies":[119],"multilayered":[122,144],"structure,":[123],"which":[124],"consists":[125],"long":[128],"narrow":[129],"lamellar":[130],"strip":[131],"overlying":[134],"An":[138],"mitochondrion":[141],"underlies":[142],"structure.":[145],"Additional":[146],"amyloplasts":[147],"aggregated":[151],"in":[156],"association":[157],"apparatus,":[161,183],"while":[162],"fibrous":[164],"encircles":[166],"leading":[168],"edge":[169],"cell.":[172],"Salient":[173],"features":[174,243],"cell,":[177],"including":[178],"structure":[184],"position":[186],"organelles,":[188],"arrangement":[190],"spline,":[193],"shared":[195,244],"spermatozoids":[197],"Equisetum":[199],"ferns":[201,227],"(including":[202],"eusporangiate":[203],"leptosporangiate":[205],"taxa).":[206],"Thus,":[207],"study":[209],"provides":[210],"morphological":[211],"support":[212],"for":[213],"hypothesis":[215],"nudum":[218],"member":[221],"assemblage":[224],"Equisetum.":[229],"However,":[230],"less":[232],"streamlined":[233],"architecture":[234],"gametes":[237],"lack":[240],"any":[246],"specific":[247],"taxon":[248],"examined":[249],"date":[251],"suggest":[252],"early":[257],"divergent":[258],"fern,":[259],"relatively":[261],"remote":[262],"affinities":[263],"Ophioglossaceae":[265],"Equisetaceae.":[267]},"counts_by_year":[{"year":2025,"cited_by_count":1},{"year":2019,"cited_by_count":1},{"year":2018,"cited_by_count":2},{"year":2017,"cited_by_count":1},{"year":2015,"cited_by_count":1},{"year":2014,"cited_by_count":1},{"year":2012,"cited_by_count":3}],"updated_date":"2026-10-30T12:39:25.321706","created_date":"2016-06-24T00:00:00"}