Note on the effect of high nitrate concentration and light intensity on the growth and uptake rates of Phaeovactylum tricornutum (Bohlin) culture

The effect of high nitrate concentration and light intensity on chlorophyll-a synthesis, cell number and nitrate assimilation on P. tJt¿coh,nuutum culture, was determined. Growth and uptake rates were determined as a function of nitrate concentration ranging from 0.40 to 35.40 µg/l. The Ks showed hi...

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Main Author: Gilda Schmidt
Format: Article
Language:English
Published: Universidade de São Paulo 1983-01-01
Series:Brazilian Journal of Oceanography
Subjects:
Online Access:http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-87591983000100010
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spelling doaj-89356e0b98644c0eb3751a8c2a6a47682020-11-25T00:47:53ZengUniversidade de São PauloBrazilian Journal of Oceanography 1679-87591982-436X1983-01-01321919810.1590/S1679-87591983000100010Note on the effect of high nitrate concentration and light intensity on the growth and uptake rates of Phaeovactylum tricornutum (Bohlin) cultureGilda SchmidtThe effect of high nitrate concentration and light intensity on chlorophyll-a synthesis, cell number and nitrate assimilation on P. tJt¿coh,nuutum culture, was determined. Growth and uptake rates were determined as a function of nitrate concentration ranging from 0.40 to 35.40 µg/l. The Ks showed high values, when compared with those obtained with lower nitrate concentration. The percentual variation of Ks was greater than that of Vmax.<br>Foi determinado o efeito dc ama alta concentração de nitrato e alta incensidade luminosa na síntese de clorofila-&#945;, número de células e assimilação nitrato em uma cultura de P. triconotum. As velocidade de crescimento e de assimilação foram determinados em função de concentrações de nitrato variando de 0,40 a 35,40 µg-at/l e intensidade luminosa de 12 KLUX. A Ks e a Vmax apresentaram valores altos, comparativamente com valores obtidos em concentrações mais baixas de nitrato e menor intensidade luminosa. A variação porcentual da Ks foi maior que a variação porcentual da Vmax.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-87591983000100010NitratosClorofilasPhaedactylum tricornutumCrescimentoMeio de culturaNutrientes mineraisIntensidade luminosaCélulaNitratesChlorophyllsPhaeodactylum tricornutumGrowthCulture mediaNutrients (mineral)Light intensi tyCell
collection DOAJ
language English
format Article
sources DOAJ
author Gilda Schmidt
spellingShingle Gilda Schmidt
Note on the effect of high nitrate concentration and light intensity on the growth and uptake rates of Phaeovactylum tricornutum (Bohlin) culture
Brazilian Journal of Oceanography
Nitratos
Clorofilas
Phaedactylum tricornutum
Crescimento
Meio de cultura
Nutrientes minerais
Intensidade luminosa
Célula
Nitrates
Chlorophylls
Phaeodactylum tricornutum
Growth
Culture media
Nutrients (mineral)
Light intensi ty
Cell
author_facet Gilda Schmidt
author_sort Gilda Schmidt
title Note on the effect of high nitrate concentration and light intensity on the growth and uptake rates of Phaeovactylum tricornutum (Bohlin) culture
title_short Note on the effect of high nitrate concentration and light intensity on the growth and uptake rates of Phaeovactylum tricornutum (Bohlin) culture
title_full Note on the effect of high nitrate concentration and light intensity on the growth and uptake rates of Phaeovactylum tricornutum (Bohlin) culture
title_fullStr Note on the effect of high nitrate concentration and light intensity on the growth and uptake rates of Phaeovactylum tricornutum (Bohlin) culture
title_full_unstemmed Note on the effect of high nitrate concentration and light intensity on the growth and uptake rates of Phaeovactylum tricornutum (Bohlin) culture
title_sort note on the effect of high nitrate concentration and light intensity on the growth and uptake rates of phaeovactylum tricornutum (bohlin) culture
publisher Universidade de São Paulo
series Brazilian Journal of Oceanography
issn 1679-8759
1982-436X
publishDate 1983-01-01
description The effect of high nitrate concentration and light intensity on chlorophyll-a synthesis, cell number and nitrate assimilation on P. tJt¿coh,nuutum culture, was determined. Growth and uptake rates were determined as a function of nitrate concentration ranging from 0.40 to 35.40 µg/l. The Ks showed high values, when compared with those obtained with lower nitrate concentration. The percentual variation of Ks was greater than that of Vmax.<br>Foi determinado o efeito dc ama alta concentração de nitrato e alta incensidade luminosa na síntese de clorofila-&#945;, número de células e assimilação nitrato em uma cultura de P. triconotum. As velocidade de crescimento e de assimilação foram determinados em função de concentrações de nitrato variando de 0,40 a 35,40 µg-at/l e intensidade luminosa de 12 KLUX. A Ks e a Vmax apresentaram valores altos, comparativamente com valores obtidos em concentrações mais baixas de nitrato e menor intensidade luminosa. A variação porcentual da Ks foi maior que a variação porcentual da Vmax.
topic Nitratos
Clorofilas
Phaedactylum tricornutum
Crescimento
Meio de cultura
Nutrientes minerais
Intensidade luminosa
Célula
Nitrates
Chlorophylls
Phaeodactylum tricornutum
Growth
Culture media
Nutrients (mineral)
Light intensi ty
Cell
url http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-87591983000100010
work_keys_str_mv AT gildaschmidt noteontheeffectofhighnitrateconcentrationandlightintensityonthegrowthanduptakeratesofphaeovactylumtricornutumbohlinculture
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