Pythium attrantheridium sp nov.:: taxonomy and comparison with related species

被引：39

作者：

Allain-Boulé, N

Tweddell, R

Mazzola, M

Bélanger, R

Lévesque, CA

机构：

[1] Agr & Agri Food Canada, Eastern Cereal & Oilseed Res Ctr, Ottawa, ON K1A 0C6, Canada

[2] Univ Laval, Ctr Rech Hort, Ste Foy, PQ G1K 7P4, Canada

[3] ARS, USDA, Tree Fruit Res Lab, Wenatchee, WA 98801 USA

来源：

MYCOLOGICAL RESEARCH | 2004年 / 108卷

基金：

加拿大自然科学与工程研究理事会;

关键词：

D O I：

10.1017/S095375620400053X

中图分类号：

Q93 [微生物学];

学科分类号：

071005 ; 100705 ;

摘要：

Pythium attrantheridium sp. nov. is a new species isolated from cavity spot lesions of carrots as well as apple and cherry seedlings from various locations widely distributed in Canada and the USA. This fungus is closely related to the heterothallic P. intermedium, but is distinguished by: (1) unique molecular characteristics; (2) unique morphological characteristics; and (3) mating incompatibility with P. intermedium. The ITS region of the nuclear rDNA of all strains of P. attrantheridium studied is different from that of all other known Pythium spp. The oogonia attract a large number of antheridia when compatible mating types contact each other. The positive mating type produces zoospores unlike those of P. intermedium. Thus, biological, morphological and molecular data support the recognition of a new species.

引用

页码：795 / 805

页数：11

共 20 条

[1]

ALLAINBOULE N, 2004, IN PRESS CANADIAN J, V26

[2]

[Anonymous], 2001, PHYLOGENETIC ANAL US

[3]

ATKINSON GF, 1895, B CORNELL U AGR EXPT, V94, P233

[4] ROLE OF PYTHIUM SPECIES IN CAVITY SPOT DEVELOPMENT ON CARROTS IN BRITISH-COLUMBIA [J].

BENARD, D ;

PUNJA, ZK .

CANADIAN JOURNAL OF PLANT PATHOLOGY-REVUE CANADIENNE DE PHYTOPATHOLOGIE, 1995, 17 (01) :31-45

[5] RESTRICTION-FRAGMENT-LENGTH-POLYMORPHISMS IN ENZYMATICALLY AMPLIFIED RIBOSOMAL DNAS OF 3 HETEROTHALLIC PYTHIUM SPECIES [J].

CHEN, WD .

PHYTOPATHOLOGY, 1992, 82 (12) :1467-1472

[6] SPECIES-SPECIFIC POLYMORPHISMS IN TRANSCRIBED RIBOSOMAL DNA OF 5 PYTHIUM SPECIES [J].

CHEN, WD ;

HOY, JW ;

SCHNEIDER, RW .

EXPERIMENTAL MYCOLOGY, 1992, 16 (01) :22-34

[7]

DEBARY A, 1881, BOT ZTG, V39, P553

[8]

Dick M., 2001, Straminipilous fungi: systematics of the Peronosporomycetes including accounts of the marine straminipilous protists, the plasmodiophorids and similar organisms

[9]

Dick M.W., 1990, KEYS TO PYTHIUM

[10]

Dick MW, 2001, MYCOTA, V7, P39

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