Novel morphology in Enteromorpha (Ulvophyceae) forming green tides

Jaanika Blomster, Saara Bäck, David Peter Fewer, Mikko Kiirikki, Annamaija Lehvo, Christine Maggs, Michael Stanhope

Tutkimustuotos: ArtikkelijulkaisuArtikkeliTieteellinenvertaisarvioitu

Kuvaus

"Green tides" are vast accumulations of unattached green macroalgae associated with eutrophicated marine environments. They have major ecological and economic impacts globally, so an understanding of their origin and persistence is required in order to make management decisions. Blooms predominantly consist of two common fouling genera of the Ulvales, Ulva (distromatic sheets) and Enteromorpha (monostromatic tubes). In the Baltic Sea and elsewhere green tides have increased over the last few decades. On the west coast of Finland, summer blooms consist of monostromatic sheets resembling Monostroma (Codiolales). We identified these as Enteromorpha intestinalis by comparative analyses of rDNA internal transcribed spacer 1 (ITS1), 5.8S, and ITS2 sequences, the first time monostromatic sheets have been found in the genus Enteromorpha. Ordinary attached E. intestinalis sporulated freely in culture, but the sheets reproduced only by cell regeneration into typical tubular thalli. The ITS sequences were identical to those of attached E. intestinalis populations in southwestern Finland, but differed by two substitutions from other Baltic sequences. We infer that this bloom originated from local attached populations and now reproduces clonally by fragmentation. This study provides further evidence of radical changes in gross morphology of green algae under eutrophicated conditions and the need for molecular identification.
Alkuperäiskielienglanti
LehtiAmerican Journal of Botany
Vuosikerta89
Sivut1756-1763
ISSN0002-9122
TilaJulkaistu - 2002
OKM-julkaisutyyppiA1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä, vertaisarvioitu

Lainaa tätä

Blomster, J., Bäck, S., Fewer, D. P., Kiirikki, M., Lehvo, A., Maggs, C., & Stanhope, M. (2002). Novel morphology in Enteromorpha (Ulvophyceae) forming green tides. American Journal of Botany, 89, 1756-1763.
Blomster, Jaanika ; Bäck, Saara ; Fewer, David Peter ; Kiirikki, Mikko ; Lehvo, Annamaija ; Maggs, Christine ; Stanhope, Michael. / Novel morphology in Enteromorpha (Ulvophyceae) forming green tides. Julkaisussa: American Journal of Botany. 2002 ; Vuosikerta 89. Sivut 1756-1763.
@article{4fae2f90badb4f52993eafb8cb990f50,
title = "Novel morphology in Enteromorpha (Ulvophyceae) forming green tides",
abstract = "{"}Green tides{"} are vast accumulations of unattached green macroalgae associated with eutrophicated marine environments. They have major ecological and economic impacts globally, so an understanding of their origin and persistence is required in order to make management decisions. Blooms predominantly consist of two common fouling genera of the Ulvales, Ulva (distromatic sheets) and Enteromorpha (monostromatic tubes). In the Baltic Sea and elsewhere green tides have increased over the last few decades. On the west coast of Finland, summer blooms consist of monostromatic sheets resembling Monostroma (Codiolales). We identified these as Enteromorpha intestinalis by comparative analyses of rDNA internal transcribed spacer 1 (ITS1), 5.8S, and ITS2 sequences, the first time monostromatic sheets have been found in the genus Enteromorpha. Ordinary attached E. intestinalis sporulated freely in culture, but the sheets reproduced only by cell regeneration into typical tubular thalli. The ITS sequences were identical to those of attached E. intestinalis populations in southwestern Finland, but differed by two substitutions from other Baltic sequences. We infer that this bloom originated from local attached populations and now reproduces clonally by fragmentation. This study provides further evidence of radical changes in gross morphology of green algae under eutrophicated conditions and the need for molecular identification.",
author = "Jaanika Blomster and Saara B{\"a}ck and Fewer, {David Peter} and Mikko Kiirikki and Annamaija Lehvo and Christine Maggs and Michael Stanhope",
year = "2002",
language = "English",
volume = "89",
pages = "1756--1763",
journal = "American Journal of Botany",
issn = "0002-9122",
publisher = "Wiley",

}

Blomster, J, Bäck, S, Fewer, DP, Kiirikki, M, Lehvo, A, Maggs, C & Stanhope, M 2002, 'Novel morphology in Enteromorpha (Ulvophyceae) forming green tides', American Journal of Botany, Vuosikerta 89, Sivut 1756-1763.

Novel morphology in Enteromorpha (Ulvophyceae) forming green tides. / Blomster, Jaanika; Bäck, Saara; Fewer, David Peter; Kiirikki, Mikko; Lehvo, Annamaija ; Maggs, Christine; Stanhope, Michael.

julkaisussa: American Journal of Botany, Vuosikerta 89, 2002, s. 1756-1763.

Tutkimustuotos: ArtikkelijulkaisuArtikkeliTieteellinenvertaisarvioitu

TY - JOUR

T1 - Novel morphology in Enteromorpha (Ulvophyceae) forming green tides

AU - Blomster, Jaanika

AU - Bäck, Saara

AU - Fewer, David Peter

AU - Kiirikki, Mikko

AU - Lehvo, Annamaija

AU - Maggs, Christine

AU - Stanhope, Michael

PY - 2002

Y1 - 2002

N2 - "Green tides" are vast accumulations of unattached green macroalgae associated with eutrophicated marine environments. They have major ecological and economic impacts globally, so an understanding of their origin and persistence is required in order to make management decisions. Blooms predominantly consist of two common fouling genera of the Ulvales, Ulva (distromatic sheets) and Enteromorpha (monostromatic tubes). In the Baltic Sea and elsewhere green tides have increased over the last few decades. On the west coast of Finland, summer blooms consist of monostromatic sheets resembling Monostroma (Codiolales). We identified these as Enteromorpha intestinalis by comparative analyses of rDNA internal transcribed spacer 1 (ITS1), 5.8S, and ITS2 sequences, the first time monostromatic sheets have been found in the genus Enteromorpha. Ordinary attached E. intestinalis sporulated freely in culture, but the sheets reproduced only by cell regeneration into typical tubular thalli. The ITS sequences were identical to those of attached E. intestinalis populations in southwestern Finland, but differed by two substitutions from other Baltic sequences. We infer that this bloom originated from local attached populations and now reproduces clonally by fragmentation. This study provides further evidence of radical changes in gross morphology of green algae under eutrophicated conditions and the need for molecular identification.

AB - "Green tides" are vast accumulations of unattached green macroalgae associated with eutrophicated marine environments. They have major ecological and economic impacts globally, so an understanding of their origin and persistence is required in order to make management decisions. Blooms predominantly consist of two common fouling genera of the Ulvales, Ulva (distromatic sheets) and Enteromorpha (monostromatic tubes). In the Baltic Sea and elsewhere green tides have increased over the last few decades. On the west coast of Finland, summer blooms consist of monostromatic sheets resembling Monostroma (Codiolales). We identified these as Enteromorpha intestinalis by comparative analyses of rDNA internal transcribed spacer 1 (ITS1), 5.8S, and ITS2 sequences, the first time monostromatic sheets have been found in the genus Enteromorpha. Ordinary attached E. intestinalis sporulated freely in culture, but the sheets reproduced only by cell regeneration into typical tubular thalli. The ITS sequences were identical to those of attached E. intestinalis populations in southwestern Finland, but differed by two substitutions from other Baltic sequences. We infer that this bloom originated from local attached populations and now reproduces clonally by fragmentation. This study provides further evidence of radical changes in gross morphology of green algae under eutrophicated conditions and the need for molecular identification.

M3 - Article

VL - 89

SP - 1756

EP - 1763

JO - American Journal of Botany

JF - American Journal of Botany

SN - 0002-9122

ER -