Cryptic species revealed by molecular phylogenetic analysis of sequences obtained from basidiomata of Tulasnella

生物 担子果 种内竞争 系统发育树 兰科 种间竞争 植物 分类学(生物学) 物种复合体 动物 遗传学 基因
作者
Darío Cruz,Juan Pablo Suárez,Ingrid Kottke,Meike Piepenbring
出处
期刊:Mycologia [Taylor & Francis]
卷期号:106 (4): 708-722 被引量:34
标识
DOI:10.3852/12-386
摘要

Delimitation of species and the search for a proper threshold for defining phylogenetic species in fungi are under discussion. In this study, morphological and molecular data are correlated to delimit species of Tulasnella, the most important mycobionts of Orchidaceae, which suffer from poor taxonomy. Resupinate basidiomata of Tulasnella species were collected in Ecuador and Germany, and 11 specimens (seven from Ecuador, four from Germany) were assigned to traditional species concepts by use of morphological keys. The specimens were compared by micro-anatomical examination with 75 specimens of Tulasnella borrowed from fungaria to obtain better insights on variation of characters. Sequences of the ITS region (127) were obtained after cloning from the fresh basidiomata and from pure cultures. Proportional variability of ITS sequences was analyzed within and among the cultures and the specimens designated to different morphospecies. Results suggested an intragenomic variation of less than 2%, an intraspecific variation of up to 4% and an interspecific divergence of more than 9% in Tulasnella. Cryptic species in Tulasnella, mostly from Ecuador, were revealed by phylogenetic analyses with 4% intraspecific divergence as a minimum threshold for delimiting species. Conventional diagnostic morphological characters appeared insufficient for species characterization. Arguments are presented for molecular delimitation of the established species Tulasnella albida, T. asymmetrica, T. eichleriana, T. cf. pinicola, T. tomaculum and T. violea.
最长约 10秒,即可获得该文献文件

科研通智能强力驱动
Strongly Powered by AbleSci AI
更新
PDF的下载单位、IP信息已删除 (2025-6-4)

科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
YamDaamCaa应助op06d采纳,获得30
刚刚
huayi发布了新的文献求助10
1秒前
iwersonshmtu完成签到,获得积分10
2秒前
大方平蓝发布了新的文献求助10
2秒前
牛与马完成签到,获得积分10
2秒前
笨笨善若发布了新的文献求助10
2秒前
852应助ernest采纳,获得30
2秒前
3秒前
xuan发布了新的文献求助10
3秒前
小星星发布了新的文献求助10
3秒前
木四点发布了新的文献求助10
4秒前
Nuckylin发布了新的文献求助10
4秒前
5秒前
yao发布了新的文献求助10
6秒前
梦游游游完成签到,获得积分10
6秒前
平淡的沛白完成签到,获得积分10
8秒前
怕黑的擎发布了新的文献求助10
9秒前
lyn666完成签到,获得积分20
9秒前
9秒前
10秒前
skyinner完成签到,获得积分10
12秒前
12秒前
TL发布了新的文献求助10
14秒前
小車月完成签到,获得积分10
14秒前
上官若男应助11采纳,获得30
15秒前
牟烨伟发布了新的文献求助10
15秒前
15秒前
张小哥12发布了新的文献求助10
16秒前
厚百合完成签到,获得积分10
17秒前
田様应助老迟到的惋清采纳,获得10
17秒前
bkagyin应助洁净衫采纳,获得10
18秒前
乐乐应助知了采纳,获得10
18秒前
20秒前
plant发布了新的文献求助10
20秒前
牟烨伟完成签到,获得积分10
21秒前
21秒前
22秒前
22秒前
英俊的铭应助张小哥12采纳,获得10
23秒前
混子完成签到,获得积分10
24秒前
高分求助中
A new approach to the extrapolation of accelerated life test data 1000
ACSM’s Guidelines for Exercise Testing and Prescription, 12th edition 500
Picture Books with Same-sex Parented Families: Unintentional Censorship 500
Nucleophilic substitution in azasydnone-modified dinitroanisoles 500
不知道标题是什么 500
A Preliminary Study on Correlation Between Independent Components of Facial Thermal Images and Subjective Assessment of Chronic Stress 500
Phylogenetic study of the order Polydesmida (Myriapoda: Diplopoda) 370
热门求助领域 (近24小时)
化学 材料科学 医学 生物 工程类 有机化学 生物化学 物理 内科学 纳米技术 计算机科学 化学工程 复合材料 遗传学 基因 物理化学 催化作用 冶金 细胞生物学 免疫学
热门帖子
关注 科研通微信公众号,转发送积分 3971720
求助须知:如何正确求助?哪些是违规求助? 3516377
关于积分的说明 11182327
捐赠科研通 3251591
什么是DOI,文献DOI怎么找? 1795960
邀请新用户注册赠送积分活动 876171
科研通“疑难数据库(出版商)”最低求助积分说明 805340