期刊
DIVERSITY-BASEL
卷 15, 期 2, 页码 -出版社
MDPI
DOI: 10.3390/d15020193
关键词
climate change; disjunct distribution; Fritillaria maximowiczii; Fritillaria dagana; North Asian flora; South Siberia; tertiary relict; endemic species; Liliaceae; ITS
This study investigates the origin and evolutionary relationships of Fritillaria sonnikovae in Siberia. The results suggest that F. sonnikovae, F. dagana, and F. maximowiczii belong to the North Asian lineage of the Liliorhiza subgenus. It is proposed to consider F. sonnikovae as a synonym for F. maximowiczii.
Fritillaria Tourn. ex L. is a genus of Liliaceae including a little more than 150 species occurring in the temperate Holarctic. Fritillaria sonnikovae Shaulo & Erst is the most recently described Siberian species in the genus. In the affinity section of the F. sonnikovae diagnosis, only F. dagana Turcz. and F. roylei Hook. are mentioned. Our study is an original attempt to shed light on the F. sonnikovae origin and its evolutionary relationships with other Fritillaria using nuclear (ITS) and plastid (matK + rps16 + trnH-psbA) DNA markers. Our results showed that F. sonnikovae together with F. dagana and F. maximowiczii Freyn belongs to the North Asian lineage of the Liliorhiza subgenus and produced no evidence supporting relationship between F. sonnikovae and F. roylei. Monophyly of Fritillaria sonnikovae was not reliably confirmed in our study since its close affinity with F. maximowiczii was demonstrated by phylogenetic analysis and morphology. Fritillaria dagana was shown to be a sister to the F. maximowiczii + F. sonnikovae group. Most authors of the present study suggest considering F. sonnikovae as a synonym for F. maximowiczii. In this view, F. sonnikovae may be considered a narrow endemic and one of the light-perianth morphs of F. maximowiczii, which has emerged in the Western Sayan and remained there as a tertiary relict.
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