Phylogenetic Relationships of Solanum Series Conicibaccata and Related Species in Solanum Section Petota Inferred from Five Conserved Ortholog Sequences

被引：12

作者：

Fajardo, Diego ^{[1
]}

Spooner, David M. ^{[1
]}

机构：

[1] Univ Wisconsin, USDA, ARS, Dept Hort, Madison, WI 53706 USA

来源：

SYSTEMATIC BOTANY | 2011年 / 36卷 / 01期

关键词：

Conserved orthologous sequences; COSII; Solarium section Petota; Solomon series Conicibaccata; wild potatoes; RESTRICTION SITE VARIATION; WILD POTATOES; EVOLUTION; LIMITS; REEXAMINATION; HYBRIDIZATION; SOLANACEAE; BOOTSTRAP; ORIGINS;

D O I：

10.1600/036364411X553252

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

Solanum series Conicibaccata is the second largest series in section Pet eta, containing 40 species widely distributed from southern Mexico to central Bolivia. It contains diploids (2n = 2x = 24), tetraploids (271 = 4x = 48) and hexaploids (2,1 = 6x = 72), and the limited number of species examined have been shown to be allopolyploids. Previous morphological and molecular studies using plastid DNA failed to discriminate clear species boundaries. Conserved orthologous nuclear DNA sequences (COSII) were used to compare the relationships among 72 accessions from 22 species from series Conicibaccata and 42 additional accessions from related series. The results supported previous studies showing the diploid members of series Conicibaccata to be related to other South American "clade 4" species, and showed all of the polyploids to be allopolyploids among members of clade 4 and other South American species of "clade 3" (series Piurana and related species). Low bootstrap support values and morphological similarity suggest recent origins and the need for a reduction in number of recognized species in series Conicibaccata.

引用

页码：163 / 170

页数：8

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