Molecular and morphologically distinct Scytosiphon species (Scytosiphonales, Phaeophyceae) display similar antioxidant capacities

Loretto Contreras, Geraldine Dennett, Alejandra Moenne, R. Eduardo Palma, Juan A. Correa

Resultado de la investigación: Article

17 Citas (Scopus)

Resumen

The taxonomic status of an alga with complanate thalli, occurring in central Chile and belonging to the genus Scytosiphon, was elucidated. Morphological and molecular features demonstrated that, in addition to the known and widespread constricted S. lomentaria (Lyngb.) Link that occurs along the Chilean coast, there is a Scytosiphon with complanate thalli that occurs only in central Chile - S. gracilis Kogame. Morphological analyses of this previously unreported complanate Scytosiphon showed thalli without constrictions, coherent plurilocular sporangia without ascocysts, and phaeophycean hairs arising from cortical cells. Furthermore, sequences of the internal transcribed spacer (ITS1 and ITS2) regions of the complanate Scytosiphon were 99.8% and 100% identical to those detected in S. gracilis from Korea. ITS-based comparative analyses showed that complanate Scytosiphon grouped in a different clade than S. lomentaria and S. tenellus Kogame from various parts of the world, including Chilean species. Moreover, molecular analyses suggest the occurrence of two distinct ITS types of S. lomentaria in northern Chile, corresponding to the Korean and Greek types. On the other hand, biochemical analyses of copper-induced antioxidant responses in S. gracilis and S. lomentaria showed an identical increase in antioxidant enzyme activities. These results suggest that copper tolerance might be a constitutive trait in these species of Scytosiphon.

Idioma originalEnglish
Páginas (desde-hasta)1320-1328
Número de páginas9
PublicaciónJournal of Phycology
Volumen43
N.º6
DOI
EstadoPublished - dic 2007

Huella dactilar

Ectocarpales
Phaeophyceae
Lomentaria
antioxidant
copper
antioxidants
thallus
hair
enzyme activity
Chile
tolerance
alga
algae
coast
sporangia
trichomes
internal transcribed spacers
Korean Peninsula
Scytosiphon
coasts

ASJC Scopus subject areas

  • Aquatic Science
  • Plant Science

Citar esto

Contreras, Loretto ; Dennett, Geraldine ; Moenne, Alejandra ; Palma, R. Eduardo ; Correa, Juan A. / Molecular and morphologically distinct Scytosiphon species (Scytosiphonales, Phaeophyceae) display similar antioxidant capacities. En: Journal of Phycology. 2007 ; Vol. 43, N.º 6. pp. 1320-1328.
@article{eedb0dea86b14434a656b4dfb656a614,
title = "Molecular and morphologically distinct Scytosiphon species (Scytosiphonales, Phaeophyceae) display similar antioxidant capacities",
abstract = "The taxonomic status of an alga with complanate thalli, occurring in central Chile and belonging to the genus Scytosiphon, was elucidated. Morphological and molecular features demonstrated that, in addition to the known and widespread constricted S. lomentaria (Lyngb.) Link that occurs along the Chilean coast, there is a Scytosiphon with complanate thalli that occurs only in central Chile - S. gracilis Kogame. Morphological analyses of this previously unreported complanate Scytosiphon showed thalli without constrictions, coherent plurilocular sporangia without ascocysts, and phaeophycean hairs arising from cortical cells. Furthermore, sequences of the internal transcribed spacer (ITS1 and ITS2) regions of the complanate Scytosiphon were 99.8{\%} and 100{\%} identical to those detected in S. gracilis from Korea. ITS-based comparative analyses showed that complanate Scytosiphon grouped in a different clade than S. lomentaria and S. tenellus Kogame from various parts of the world, including Chilean species. Moreover, molecular analyses suggest the occurrence of two distinct ITS types of S. lomentaria in northern Chile, corresponding to the Korean and Greek types. On the other hand, biochemical analyses of copper-induced antioxidant responses in S. gracilis and S. lomentaria showed an identical increase in antioxidant enzyme activities. These results suggest that copper tolerance might be a constitutive trait in these species of Scytosiphon.",
keywords = "Antioxidant metabolism, Copper stress, Scytosiphon gracilis, Scytosiphon lomentaria, Taxonomy",
author = "Loretto Contreras and Geraldine Dennett and Alejandra Moenne and Palma, {R. Eduardo} and Correa, {Juan A.}",
year = "2007",
month = "12",
doi = "10.1111/j.1529-8817.2007.00413.x",
language = "English",
volume = "43",
pages = "1320--1328",
journal = "Journal of Phycology",
issn = "0022-3646",
publisher = "Wiley-Blackwell",
number = "6",

}

Molecular and morphologically distinct Scytosiphon species (Scytosiphonales, Phaeophyceae) display similar antioxidant capacities. / Contreras, Loretto; Dennett, Geraldine; Moenne, Alejandra; Palma, R. Eduardo; Correa, Juan A.

En: Journal of Phycology, Vol. 43, N.º 6, 12.2007, p. 1320-1328.

Resultado de la investigación: Article

TY - JOUR

T1 - Molecular and morphologically distinct Scytosiphon species (Scytosiphonales, Phaeophyceae) display similar antioxidant capacities

AU - Contreras, Loretto

AU - Dennett, Geraldine

AU - Moenne, Alejandra

AU - Palma, R. Eduardo

AU - Correa, Juan A.

PY - 2007/12

Y1 - 2007/12

N2 - The taxonomic status of an alga with complanate thalli, occurring in central Chile and belonging to the genus Scytosiphon, was elucidated. Morphological and molecular features demonstrated that, in addition to the known and widespread constricted S. lomentaria (Lyngb.) Link that occurs along the Chilean coast, there is a Scytosiphon with complanate thalli that occurs only in central Chile - S. gracilis Kogame. Morphological analyses of this previously unreported complanate Scytosiphon showed thalli without constrictions, coherent plurilocular sporangia without ascocysts, and phaeophycean hairs arising from cortical cells. Furthermore, sequences of the internal transcribed spacer (ITS1 and ITS2) regions of the complanate Scytosiphon were 99.8% and 100% identical to those detected in S. gracilis from Korea. ITS-based comparative analyses showed that complanate Scytosiphon grouped in a different clade than S. lomentaria and S. tenellus Kogame from various parts of the world, including Chilean species. Moreover, molecular analyses suggest the occurrence of two distinct ITS types of S. lomentaria in northern Chile, corresponding to the Korean and Greek types. On the other hand, biochemical analyses of copper-induced antioxidant responses in S. gracilis and S. lomentaria showed an identical increase in antioxidant enzyme activities. These results suggest that copper tolerance might be a constitutive trait in these species of Scytosiphon.

AB - The taxonomic status of an alga with complanate thalli, occurring in central Chile and belonging to the genus Scytosiphon, was elucidated. Morphological and molecular features demonstrated that, in addition to the known and widespread constricted S. lomentaria (Lyngb.) Link that occurs along the Chilean coast, there is a Scytosiphon with complanate thalli that occurs only in central Chile - S. gracilis Kogame. Morphological analyses of this previously unreported complanate Scytosiphon showed thalli without constrictions, coherent plurilocular sporangia without ascocysts, and phaeophycean hairs arising from cortical cells. Furthermore, sequences of the internal transcribed spacer (ITS1 and ITS2) regions of the complanate Scytosiphon were 99.8% and 100% identical to those detected in S. gracilis from Korea. ITS-based comparative analyses showed that complanate Scytosiphon grouped in a different clade than S. lomentaria and S. tenellus Kogame from various parts of the world, including Chilean species. Moreover, molecular analyses suggest the occurrence of two distinct ITS types of S. lomentaria in northern Chile, corresponding to the Korean and Greek types. On the other hand, biochemical analyses of copper-induced antioxidant responses in S. gracilis and S. lomentaria showed an identical increase in antioxidant enzyme activities. These results suggest that copper tolerance might be a constitutive trait in these species of Scytosiphon.

KW - Antioxidant metabolism

KW - Copper stress

KW - Scytosiphon gracilis

KW - Scytosiphon lomentaria

KW - Taxonomy

UR - http://www.scopus.com/inward/record.url?scp=36849036768&partnerID=8YFLogxK

U2 - 10.1111/j.1529-8817.2007.00413.x

DO - 10.1111/j.1529-8817.2007.00413.x

M3 - Article

AN - SCOPUS:36849036768

VL - 43

SP - 1320

EP - 1328

JO - Journal of Phycology

JF - Journal of Phycology

SN - 0022-3646

IS - 6

ER -