Effects of light intensity and temperature on Cylindrospermopsis raciborskii (Cyanobacteria) with straight and coiled trichomes: growth rate and morphology
Autor(a) principal: | |
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Data de Publicação: | 2012 |
Outros Autores: | , , , , |
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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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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1808129404945039360 |