Effects of light intensity and temperature on Cylindrospermopsis raciborskii (Cyanobacteria) with straight and coiled trichomes: growth rate and morphology

Detalhes bibliográficos
Autor(a) principal: Bittencourt-Oliveira, M. C. [UNESP]
Data de Publicação: 2012
Outros Autores: Buch, B. [UNESP], Hereman, Talita Caroline [UNESP], Arruda-Neto, J. D. T., Moura, A. N., Zocchi, S. S.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.1590/S1519-69842012000200016
http://hdl.handle.net/11449/19967
Resumo: Cylindrospermopsis raciborskii (Woloszynska) Seenayya et Subba Raju (Ordem Nostocales) is one of the most troublesome bloom-forming species in Brazil. Understanding the population dynamics of the different morphotypes of C. raciborskii (straight and coiled) could assist in the prediction of favourable conditions for the proliferation of this potentially toxin-producing species. The aim of the present study was to assess the effects of two different light intensities and temperatures on the growth rate and morphology of the trichomes of the straight and coiled morphotypes. For such, two non-toxin producing strains of C. raciborskii were used - one with a coiled trichome (ITEP31) and another with a straight trichome (ITEP28). The strains were cultured in BG-11 medium in a climatic chamber under controlled conditions. Two light intensities (30 and 90 mu mol.m(-2).s(-1)) were combined at temperatures of 21 and 31 degrees C and the growth rate and morphological changes were analysed. The morphotypes responded differently to the different temperatures and light intensities. Both strains exhibited faster growth velocities when submitted to higher light intensity and temperature. The lower temperature and higher luminosity hampered the development of both strains. Variations in cellular morphology and an absence of akinetes in both strains were related to the lower temperature (21 C). The coiled morphotype demonstrated considerable phenotype plasticity, changing the morphology of trichome throughout its growth curve. Although molecular analysis does not sustain the separation of the morphotypes as distinct species, their different eco-physiological responses should be considered further knowledge of extreme importance for the population control of these potentially toxic organisms.
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spelling Effects of light intensity and temperature on Cylindrospermopsis raciborskii (Cyanobacteria) with straight and coiled trichomes: growth rate and morphologycyanobacteriamorphotypegrowth curvecultureCylindrospermopsis raciborskii (Woloszynska) Seenayya et Subba Raju (Ordem Nostocales) is one of the most troublesome bloom-forming species in Brazil. Understanding the population dynamics of the different morphotypes of C. raciborskii (straight and coiled) could assist in the prediction of favourable conditions for the proliferation of this potentially toxin-producing species. The aim of the present study was to assess the effects of two different light intensities and temperatures on the growth rate and morphology of the trichomes of the straight and coiled morphotypes. For such, two non-toxin producing strains of C. raciborskii were used - one with a coiled trichome (ITEP31) and another with a straight trichome (ITEP28). The strains were cultured in BG-11 medium in a climatic chamber under controlled conditions. Two light intensities (30 and 90 mu mol.m(-2).s(-1)) were combined at temperatures of 21 and 31 degrees C and the growth rate and morphological changes were analysed. The morphotypes responded differently to the different temperatures and light intensities. Both strains exhibited faster growth velocities when submitted to higher light intensity and temperature. The lower temperature and higher luminosity hampered the development of both strains. Variations in cellular morphology and an absence of akinetes in both strains were related to the lower temperature (21 C). The coiled morphotype demonstrated considerable phenotype plasticity, changing the morphology of trichome throughout its growth curve. Although molecular analysis does not sustain the separation of the morphotypes as distinct species, their different eco-physiological responses should be considered further knowledge of extreme importance for the population control of these potentially toxic organisms.Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Univ São Paulo, ESALQ, Dept Ciencias Biol, BR-13418900 Piracicaba, SP, BrazilUniv Estadual Paulista, UNESP, Area Biol Vegetal, Programa Posgrad Ciencias Biol, BR-13506900 Rio Claro, SP, BrazilUniv São Paulo, Inst Fis, Lab Acelerador Linear, BR-01498 São Paulo, BrazilItaly Brazilian Univ Ctr, São Paulo, BrazilUniversidade Federal Rural de Pernambuco (UFRPE), Area Bot, Dept Biol, BR-52171030 Recife, PE, BrazilUniv São Paulo, ESALQ, Dept Ciencias Exatas, BR-13418900 Piracicaba, SP, BrazilUniv Estadual Paulista, UNESP, Area Biol Vegetal, Programa Posgrad Ciencias Biol, BR-13506900 Rio Claro, SP, BrazilCNPq: 300794/2004-5CNPq: 500704/2004-0FAPESP: 04/00939-6FAPESP: 07/57509-1Int Inst EcologyUniversidade de São Paulo (USP)Universidade Estadual Paulista (Unesp)Italy Brazilian Univ CtrUniversidade Federal Rural de Pernambuco (UFRPE)Bittencourt-Oliveira, M. C. [UNESP]Buch, B. [UNESP]Hereman, Talita Caroline [UNESP]Arruda-Neto, J. D. T.Moura, A. N.Zocchi, S. S.2014-05-20T13:55:45Z2014-05-20T13:55:45Z2012-05-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article343-351http://dx.doi.org/10.1590/S1519-69842012000200016Brazilian Journal of Biology. São Carlos: Int Inst Ecology, v. 72, n. 2, p. 343-351, 2012.1519-6984http://hdl.handle.net/11449/1996710.1590/S1519-69842012000200016S1519-69842012000200016WOS:000305765600016S1519-69842012000200016.pdfWeb of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengBrazilian Journal of Biology0.7840,523info:eu-repo/semantics/openAccess2021-10-23T17:45:51Zoai:repositorio.unesp.br:11449/19967Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T22:12:06.177394Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Effects of light intensity and temperature on Cylindrospermopsis raciborskii (Cyanobacteria) with straight and coiled trichomes: growth rate and morphology
title Effects of light intensity and temperature on Cylindrospermopsis raciborskii (Cyanobacteria) with straight and coiled trichomes: growth rate and morphology
spellingShingle Effects of light intensity and temperature on Cylindrospermopsis raciborskii (Cyanobacteria) with straight and coiled trichomes: growth rate and morphology
Bittencourt-Oliveira, M. C. [UNESP]
cyanobacteria
morphotype
growth curve
culture
title_short Effects of light intensity and temperature on Cylindrospermopsis raciborskii (Cyanobacteria) with straight and coiled trichomes: growth rate and morphology
title_full Effects of light intensity and temperature on Cylindrospermopsis raciborskii (Cyanobacteria) with straight and coiled trichomes: growth rate and morphology
title_fullStr Effects of light intensity and temperature on Cylindrospermopsis raciborskii (Cyanobacteria) with straight and coiled trichomes: growth rate and morphology
title_full_unstemmed Effects of light intensity and temperature on Cylindrospermopsis raciborskii (Cyanobacteria) with straight and coiled trichomes: growth rate and morphology
title_sort Effects of light intensity and temperature on Cylindrospermopsis raciborskii (Cyanobacteria) with straight and coiled trichomes: growth rate and morphology
author Bittencourt-Oliveira, M. C. [UNESP]
author_facet Bittencourt-Oliveira, M. C. [UNESP]
Buch, B. [UNESP]
Hereman, Talita Caroline [UNESP]
Arruda-Neto, J. D. T.
Moura, A. N.
Zocchi, S. S.
author_role author
author2 Buch, B. [UNESP]
Hereman, Talita Caroline [UNESP]
Arruda-Neto, J. D. T.
Moura, A. N.
Zocchi, S. S.
author2_role author
author
author
author
author
dc.contributor.none.fl_str_mv Universidade de São Paulo (USP)
Universidade Estadual Paulista (Unesp)
Italy Brazilian Univ Ctr
Universidade Federal Rural de Pernambuco (UFRPE)
dc.contributor.author.fl_str_mv Bittencourt-Oliveira, M. C. [UNESP]
Buch, B. [UNESP]
Hereman, Talita Caroline [UNESP]
Arruda-Neto, J. D. T.
Moura, A. N.
Zocchi, S. S.
dc.subject.por.fl_str_mv cyanobacteria
morphotype
growth curve
culture
topic cyanobacteria
morphotype
growth curve
culture
description Cylindrospermopsis raciborskii (Woloszynska) Seenayya et Subba Raju (Ordem Nostocales) is one of the most troublesome bloom-forming species in Brazil. Understanding the population dynamics of the different morphotypes of C. raciborskii (straight and coiled) could assist in the prediction of favourable conditions for the proliferation of this potentially toxin-producing species. The aim of the present study was to assess the effects of two different light intensities and temperatures on the growth rate and morphology of the trichomes of the straight and coiled morphotypes. For such, two non-toxin producing strains of C. raciborskii were used - one with a coiled trichome (ITEP31) and another with a straight trichome (ITEP28). The strains were cultured in BG-11 medium in a climatic chamber under controlled conditions. Two light intensities (30 and 90 mu mol.m(-2).s(-1)) were combined at temperatures of 21 and 31 degrees C and the growth rate and morphological changes were analysed. The morphotypes responded differently to the different temperatures and light intensities. Both strains exhibited faster growth velocities when submitted to higher light intensity and temperature. The lower temperature and higher luminosity hampered the development of both strains. Variations in cellular morphology and an absence of akinetes in both strains were related to the lower temperature (21 C). The coiled morphotype demonstrated considerable phenotype plasticity, changing the morphology of trichome throughout its growth curve. Although molecular analysis does not sustain the separation of the morphotypes as distinct species, their different eco-physiological responses should be considered further knowledge of extreme importance for the population control of these potentially toxic organisms.
publishDate 2012
dc.date.none.fl_str_mv 2012-05-01
2014-05-20T13:55:45Z
2014-05-20T13:55:45Z
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://dx.doi.org/10.1590/S1519-69842012000200016
Brazilian Journal of Biology. São Carlos: Int Inst Ecology, v. 72, n. 2, p. 343-351, 2012.
1519-6984
http://hdl.handle.net/11449/19967
10.1590/S1519-69842012000200016
S1519-69842012000200016
WOS:000305765600016
S1519-69842012000200016.pdf
url http://dx.doi.org/10.1590/S1519-69842012000200016
http://hdl.handle.net/11449/19967
identifier_str_mv Brazilian Journal of Biology. São Carlos: Int Inst Ecology, v. 72, n. 2, p. 343-351, 2012.
1519-6984
10.1590/S1519-69842012000200016
S1519-69842012000200016
WOS:000305765600016
S1519-69842012000200016.pdf
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Brazilian Journal of Biology
0.784
0,523
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 343-351
dc.publisher.none.fl_str_mv Int Inst Ecology
publisher.none.fl_str_mv Int Inst Ecology
dc.source.none.fl_str_mv Web of Science
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
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