Pseudopleurochloris antarctica gen. et sp nov., a new coccoid xanthophycean from pack-ice of Wood Bay (Ross Sea, Antarctica):: ultrastructure, pigments and 18S rRNA gene sequence

被引：20

作者：

Andreoli, C ^{[1
]}

Moro, I ^{[1
]}

la Rocca, N ^{[1
]}

Rigoni, F ^{[1
]}

Dalla Valle, L ^{[1
]}

Bargelloni, L ^{[1
]}

机构：

[1] Univ Padua, Dept Biol, I-35131 Padua, Italy

来源：

EUROPEAN JOURNAL OF PHYCOLOGY | 1999年 / 34卷 / 02期

关键词：

Pseudopleurochloris antarctica gen. et sp nov; Ross Sea; Wood Bay; Xanthophyceae;

D O I：

10.1017/S0967026299002048

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

A microalga was isolated from the pack-ice of Wood Bay (Antarctica) during austral summer 1993-4. By comparison with an authentic strain obtained from Sammlung von Algenkulturen at the University of Gottingen (SAG 860-3), its ultrastructural details and pigment composition were very similar to those of Pleurochloris meiringensis. However, sequence analysis of the entire 18S rRNA gene revealed substantial genetic divergence (57 nucleotide substitutions and 19 insertions/deletions) between SAG 860-3 and the Antarctic isolate. Phylogenetic analysis of complete 18S rRNA gene sequences from IS microalgal species, including the two strains studied, rejected the hypothesis that the Antarctic isolate is the sister species to Pleurochloris meiringensis. Molecular evidence indicates that the Antarctic isolate is the sister group of a clade that comprises two other representatives of the Xanthophyceae (synonym Tribophyceae): Pleurochloris meiringensis and Botrydiopsis intercedens. This leads us to conclude that this microalga is a new species belonging to a new genus and the name Pseudopleurochloris antarctica is proposed.

引用

页码：149 / 159

页数：11

共 40 条

[11] Hanusia phi gen. et sp. nov. (Cryptophyceae):: characterization of 'Cryptomonas sp. Φ' [J].

Deane, JA ;

Hill, DRA ;

Brett, SJ ;

McFadden, GI .

EUROPEAN JOURNAL OF PHYCOLOGY, 1998, 33 (02) :149-154

[12]

ETTL H., 1978, SUSSWASSERFLORA MITT, V3, P1

[13]

FELSENSTEIN J, 1985, EVOLUTION, V39, P783, DOI 10.1111/j.1558-5646.1985.tb00420.x

[14] WINTER ECOLOGY OF THE SEA-ICE BIOTA IN WEDDELL SEA PACK ICE [J].

GARRISON, DL ;

CLOSE, AR .

MARINE ECOLOGY PROGRESS SERIES, 1993, 96 (01) :17-31

[15]

Guillard RR., 1975, CULTURE MARINE INVER, P29, DOI [DOI 10.1007/978-1-4615-8714-9_3, 10.1007/978-1-4615-8714-9_3]

[16]

HIBBERD D J, 1971, Taxon, V20, P523, DOI 10.2307/1218254

[17] NOTES ON THE TAXONOMY AND NOMENCLATURE OF THE ALGAL CLASSES EUSTIGMATOPHYCEAE AND TRIBOPHYCEAE (SYNONYM XANTHOPHYCEAE) [J].

HIBBERD, DJ .

BOTANICAL JOURNAL OF THE LINNEAN SOCIETY, 1981, 82 (02) :93-119

[18] OBSERVATION ON CYTOLOGY AND ULTRASTRUCTURE OF NEW ALGA CLASS, EUSTIGMATOPHYCEAE [J].

HIBBERD, DJ ;

LEEDALE, GF .

ANNALS OF BOTANY, 1972, 36 (144) :49-+

[19] EUSTIGMATOPHYCEAE - A NEW ALGAL CLASS WITH UNIQUE ORGANIZATION OF MOTILE CELL [J].

HIBBERD, DJ ;

LEEDALE, GF .

NATURE, 1970, 225 (5234) :758-&

[20] PRIMARY STRUCTURE OF THE CHLORELLA-VULGARIS SMALL SUBUNIT RIBOSOMAL-RNA CODING REGION [J].

HUSS, VAR ;

SOGIN, ML .

NUCLEIC ACIDS RESEARCH, 1989, 17 (03) :1255-1255

← 1 2 3 4 →