Historical herbarium specimens in plant molecular systematics - an example from the fern genus Lindsaea (Lindsaeaceae)

被引:17
|
作者
Lehtonen, Samuli [1 ]
Christenhusz, Maarten J. M. [1 ]
机构
[1] Univ Turku, Dept Biol, FI-20014 Turku, Finland
基金
芬兰科学院;
关键词
barcoding; DNA extraction; herbarium specimens; Lindsaea; molecular phylogenetics; types in phylogenies; NONCODING CHLOROPLAST DNA; AMPLIFICATION; EXTRACTION; UTILITY;
D O I
10.2478/s11756-010-0008-8
中图分类号
Q [生物科学];
学科分类号
07 ; 0710 ; 09 ;
摘要
We extracted, amplified and sequenced DNA from historical herbarium specimens and silica-dried samples of the fern genus Lindsaea in order to study the sequencing success between the two kinds of samples. High quality sequences were obtained from 57% of the herbarium samples. The specimens age was found to be of little importance for sequencing success when less than 75 years, but the colour of a specimen was found more indicative of sequencing success. Shorter DNA fragments were sequenced successfully twice as often as longer fragments from the herbarium material; in relatively recently collected silica-dried material longer sequences were obtained almost as frequently as short ones. No obvious differences in sequencing success between material originating from different herbaria was observed. We conclude that by using specifically designed DNA extraction protocols and by sequencing short DNA fragments from carefully selected specimens, herbarium material and type specimens can be successfully used in molecular systematics. Typical material or specimens from the type locality (topotypes) should be preferred, when placing a species in a phylogeny.
引用
收藏
页码:204 / 208
页数:5
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