Blue-greenish acrochaetioid algae in freshwater habitats are Chantransia stages of Batrachospermales sensu lato (Rhodophyta)
Autor(a) principal: | |
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Data de Publicação: | 2003 |
Outros Autores: | |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://sauber.dzb.ibilce.unesp.br/~orlando/MorphAcroch(Proof).pdf http://hdl.handle.net/11449/67252 |
Resumo: | Fourteen culture isolates of freshwater acrochaetioid algae from distinct regions around the world were analysed, including the reddish species Audouinella hermannii, the dubious blue-greenish species A. pygmaea, and Chantransia stages from distinct taxonomic origins in the Batrachospermales sensu lato (Batrachospermaceae, Lemaneaceae and Thoreaceae). Four isolates (two 'Chantransia' stages and two species of Audouinella, A. hermannii and A. pygmaea) were tested under experimental conditions of temperature (10-25°C), irradiance (65 and 300 μmol photons m-2 s-1) and photoperiod (16:8 h and 8:16 h light/dark cycles). Plant colour is proposed as the only vegetative character that can be unequivocally applied to distinguish Audouinella from 'Chantransia', blue-greenish representing Chantransia stages and reddish applying to true Audouinella species (also forming reproductive structures other than monosporangia, e.g. tetrasporangia). Some isolates of A. pygmaea were proven to be unequivocally 'Chantransia stages owing either to production of juvenile gametophytes or to derivation from carpospores. No association of the morphology of A. pygmaea was found with any particular species, thus it should be regarded as a complex involving many species of the Batrachospermales sensu lato, as is also the case with A. macrospora. We therefore recommend that all blue-greenish acrochaetioid algae in freshwater habitats be considered as Chantransia stages of members of the Batrachospermales, and that the informal descriptors pygmaea and macrospora be used to distinguish the two discernable morphologies. Induction of gametophytes occurred under much wider conditions than previously reported, reinforcing the conclusion that requirements are probably species-specific. Although phenotypic plasticity was in evidence, with temperature, irradiance and photoperiod affecting morphology, no alga showed variation outside the limits based on traditional taxonomic studies. No overall trend was observed for vegetative or reproductive characters in response to temperature, irradiance and photoperiod for all the algae tested, only for specific algae or characters. Effects of temperature and irradiance on morphological characters were more evident, as well as strong interactions between these variables, whereas few differences were generally found in response to photoperiod and irradiance. |
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Blue-greenish acrochaetioid algae in freshwater habitats are Chantransia stages of Batrachospermales sensu lato (Rhodophyta)AcrochaetialesBatrachospermalesCultureIrradianceMorphologyPhotoperiodTemperaturefreshwatermorphologyphotoperiodred algataxonomytemperaturealgaeAudouinellaAudouinella hermanniiAudouinella macrosporaBatrachospermaceaeChantransiaEukaryotaLemaneaceaeMacrosporaRhodophytaThoreaceaeFourteen culture isolates of freshwater acrochaetioid algae from distinct regions around the world were analysed, including the reddish species Audouinella hermannii, the dubious blue-greenish species A. pygmaea, and Chantransia stages from distinct taxonomic origins in the Batrachospermales sensu lato (Batrachospermaceae, Lemaneaceae and Thoreaceae). Four isolates (two 'Chantransia' stages and two species of Audouinella, A. hermannii and A. pygmaea) were tested under experimental conditions of temperature (10-25°C), irradiance (65 and 300 μmol photons m-2 s-1) and photoperiod (16:8 h and 8:16 h light/dark cycles). Plant colour is proposed as the only vegetative character that can be unequivocally applied to distinguish Audouinella from 'Chantransia', blue-greenish representing Chantransia stages and reddish applying to true Audouinella species (also forming reproductive structures other than monosporangia, e.g. tetrasporangia). Some isolates of A. pygmaea were proven to be unequivocally 'Chantransia stages owing either to production of juvenile gametophytes or to derivation from carpospores. No association of the morphology of A. pygmaea was found with any particular species, thus it should be regarded as a complex involving many species of the Batrachospermales sensu lato, as is also the case with A. macrospora. We therefore recommend that all blue-greenish acrochaetioid algae in freshwater habitats be considered as Chantransia stages of members of the Batrachospermales, and that the informal descriptors pygmaea and macrospora be used to distinguish the two discernable morphologies. Induction of gametophytes occurred under much wider conditions than previously reported, reinforcing the conclusion that requirements are probably species-specific. Although phenotypic plasticity was in evidence, with temperature, irradiance and photoperiod affecting morphology, no alga showed variation outside the limits based on traditional taxonomic studies. No overall trend was observed for vegetative or reproductive characters in response to temperature, irradiance and photoperiod for all the algae tested, only for specific algae or characters. Effects of temperature and irradiance on morphological characters were more evident, as well as strong interactions between these variables, whereas few differences were generally found in response to photoperiod and irradiance.Depto. de Zoologia e Botânica Universidade Estadual Paulista, R. Cristovao Colombo, 2265, 15054-000 - S. Jose do Rio Preto, SPDepto. de Zoologia e Botânica Universidade Estadual Paulista, R. Cristovao Colombo, 2265, 15054-000 - S. Jose do Rio Preto, SPUniversidade Estadual Paulista (Unesp)Zucchi, Marcelo Ribeiro [UNESP]Necchi Jr., Orlando [UNESP]2014-05-27T11:20:38Z2014-05-27T11:20:38Z2003-04-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article117-131http://sauber.dzb.ibilce.unesp.br/~orlando/MorphAcroch(Proof).pdfCryptogamie, Algologie, v. 24, n. 2, p. 117-131, 2003.0181-1568http://hdl.handle.net/11449/67252WOS:0001847455000032-s2.0-0037706078Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengCryptogamie Algologie1.1140,500info:eu-repo/semantics/openAccess2021-10-22T19:32:32Zoai:repositorio.unesp.br:11449/67252Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T23:28:34.284498Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Blue-greenish acrochaetioid algae in freshwater habitats are Chantransia stages of Batrachospermales sensu lato (Rhodophyta) |
title |
Blue-greenish acrochaetioid algae in freshwater habitats are Chantransia stages of Batrachospermales sensu lato (Rhodophyta) |
spellingShingle |
Blue-greenish acrochaetioid algae in freshwater habitats are Chantransia stages of Batrachospermales sensu lato (Rhodophyta) Zucchi, Marcelo Ribeiro [UNESP] Acrochaetiales Batrachospermales Culture Irradiance Morphology Photoperiod Temperature freshwater morphology photoperiod red alga taxonomy temperature algae Audouinella Audouinella hermannii Audouinella macrospora Batrachospermaceae Chantransia Eukaryota Lemaneaceae Macrospora Rhodophyta Thoreaceae |
title_short |
Blue-greenish acrochaetioid algae in freshwater habitats are Chantransia stages of Batrachospermales sensu lato (Rhodophyta) |
title_full |
Blue-greenish acrochaetioid algae in freshwater habitats are Chantransia stages of Batrachospermales sensu lato (Rhodophyta) |
title_fullStr |
Blue-greenish acrochaetioid algae in freshwater habitats are Chantransia stages of Batrachospermales sensu lato (Rhodophyta) |
title_full_unstemmed |
Blue-greenish acrochaetioid algae in freshwater habitats are Chantransia stages of Batrachospermales sensu lato (Rhodophyta) |
title_sort |
Blue-greenish acrochaetioid algae in freshwater habitats are Chantransia stages of Batrachospermales sensu lato (Rhodophyta) |
author |
Zucchi, Marcelo Ribeiro [UNESP] |
author_facet |
Zucchi, Marcelo Ribeiro [UNESP] Necchi Jr., Orlando [UNESP] |
author_role |
author |
author2 |
Necchi Jr., Orlando [UNESP] |
author2_role |
author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Zucchi, Marcelo Ribeiro [UNESP] Necchi Jr., Orlando [UNESP] |
dc.subject.por.fl_str_mv |
Acrochaetiales Batrachospermales Culture Irradiance Morphology Photoperiod Temperature freshwater morphology photoperiod red alga taxonomy temperature algae Audouinella Audouinella hermannii Audouinella macrospora Batrachospermaceae Chantransia Eukaryota Lemaneaceae Macrospora Rhodophyta Thoreaceae |
topic |
Acrochaetiales Batrachospermales Culture Irradiance Morphology Photoperiod Temperature freshwater morphology photoperiod red alga taxonomy temperature algae Audouinella Audouinella hermannii Audouinella macrospora Batrachospermaceae Chantransia Eukaryota Lemaneaceae Macrospora Rhodophyta Thoreaceae |
description |
Fourteen culture isolates of freshwater acrochaetioid algae from distinct regions around the world were analysed, including the reddish species Audouinella hermannii, the dubious blue-greenish species A. pygmaea, and Chantransia stages from distinct taxonomic origins in the Batrachospermales sensu lato (Batrachospermaceae, Lemaneaceae and Thoreaceae). Four isolates (two 'Chantransia' stages and two species of Audouinella, A. hermannii and A. pygmaea) were tested under experimental conditions of temperature (10-25°C), irradiance (65 and 300 μmol photons m-2 s-1) and photoperiod (16:8 h and 8:16 h light/dark cycles). Plant colour is proposed as the only vegetative character that can be unequivocally applied to distinguish Audouinella from 'Chantransia', blue-greenish representing Chantransia stages and reddish applying to true Audouinella species (also forming reproductive structures other than monosporangia, e.g. tetrasporangia). Some isolates of A. pygmaea were proven to be unequivocally 'Chantransia stages owing either to production of juvenile gametophytes or to derivation from carpospores. No association of the morphology of A. pygmaea was found with any particular species, thus it should be regarded as a complex involving many species of the Batrachospermales sensu lato, as is also the case with A. macrospora. We therefore recommend that all blue-greenish acrochaetioid algae in freshwater habitats be considered as Chantransia stages of members of the Batrachospermales, and that the informal descriptors pygmaea and macrospora be used to distinguish the two discernable morphologies. Induction of gametophytes occurred under much wider conditions than previously reported, reinforcing the conclusion that requirements are probably species-specific. Although phenotypic plasticity was in evidence, with temperature, irradiance and photoperiod affecting morphology, no alga showed variation outside the limits based on traditional taxonomic studies. No overall trend was observed for vegetative or reproductive characters in response to temperature, irradiance and photoperiod for all the algae tested, only for specific algae or characters. Effects of temperature and irradiance on morphological characters were more evident, as well as strong interactions between these variables, whereas few differences were generally found in response to photoperiod and irradiance. |
publishDate |
2003 |
dc.date.none.fl_str_mv |
2003-04-01 2014-05-27T11:20:38Z 2014-05-27T11:20:38Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://sauber.dzb.ibilce.unesp.br/~orlando/MorphAcroch(Proof).pdf Cryptogamie, Algologie, v. 24, n. 2, p. 117-131, 2003. 0181-1568 http://hdl.handle.net/11449/67252 WOS:000184745500003 2-s2.0-0037706078 |
url |
http://sauber.dzb.ibilce.unesp.br/~orlando/MorphAcroch(Proof).pdf http://hdl.handle.net/11449/67252 |
identifier_str_mv |
Cryptogamie, Algologie, v. 24, n. 2, p. 117-131, 2003. 0181-1568 WOS:000184745500003 2-s2.0-0037706078 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Cryptogamie Algologie 1.114 0,500 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
117-131 |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1808129524126187520 |