A plastid phylogeny of the Old World fern genus Leptochilus (Polypodiaceae): Implications for cryptic speciation and progressive colonization from lower to higher latitudes
Zhang, Liang1; Ngan Thi Lu2,4,5; Zhou, Xin-Mao3,10; Chen, De-Kui6; Knapp, Ralf7; Zhou, Lin2; Guo, Lei1; Thien Tam Luong8,9; Sun, Hang1; Gao, Xin-Fen2; Zhang, Li-Bing2,10
2019-05-01
Source PublicationMOLECULAR PHYLOGENETICS AND EVOLUTION
ISSN1055-7903
Volume134Pages:311-322
AbstractThe newly defined fern genus Leptochilus contains about 50 species occurring in subtropical to tropical Asia and adjacent Pacific islands. The circumscription and phylogeny of the genus have been ambiguous and its species had been included in various genera such as Colysis, Dendroglossa, Kontumia, Microsorum, and Paraleptochilus. Previous molecular studies sampled only 2-4 molecular markers and 2-16 accessions of Leptochilus. In the present study, DNA sequences of six plastid markers of 105 accessions representing ca. 40 species of Leptochilus, including types of Colysis, Kontumia, Leptochilus, and Paraleptochilus, 39 species of six non-Leptochilus genera of Microsoroideae, and one species of Pyrrosia, are used to infer a phylogeny. Our major results include: (1) Leptochilus is monophyletic and resolved as nested within the microsoroid ferns, but its relationships with other members of Microsoroideae are not well resolved; (2) Six well-supported major clades in Leptochilus are recognized, differing from one another in molecular, morphological, and geographical features; (3) Species related to L. macrophyllus representing earliest split in Leptochilus are identified; (4) The inclusion of Microsorum pteropus in Leptochilus is confirmed, whereas M. insigne is closely related to Leptochilus but not resolved as a member of the genus; (5) The species number of the genus is likely to double the most recent estimate following our study, and quite a few cryptic species should be recognized; and (6) A basal grade formed by three major clades is recovered and they are composed of species almost exclusively distributed at lower latitudes (the Malay Archipelago), whereas the shallow-level clades contain species distributed at mainly higher latitudes, suggesting that Leptochilus might have evolved at lower latitudes and progressively dispersed to and colonized higher latitudes.
KeywordColysis Fern phylogeny Latitudinal dispersals Malay Archipelago Microsorum Paraleptochilus
Indexed BySCI
Language英语
Document Type期刊论文
Identifierhttp://ir.kib.ac.cn/handle/151853/65138
Collection中国科学院东亚植物多样性与生物地理学重点实验室
Corresponding AuthorGao, Xin-Fen; Zhang, Li-Bing
Affiliation1.Chinese Acad Sci, Kunming Inst Bot, Key Lab Plant Divers & Biogeog East Asia, Kunming 650201, Yunnan, Peoples R China
2.Chinese Acad Sci, Chengdu Inst Biol, CAS Key Lab Mt Ecol Restorat & Bioresource Utiliz, POB 416, Chengdu 610041, Sichuan, Peoples R China
3.Yunnan Univ, State Key Lab Conservat & Utilizat Bioresources Y, Lab Ecol & Evolutionary Biol, Kunming 650091, Yunnan, Peoples R China
4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
5.Vietnam Acad Sci & Technol, Dept Biol, Vietnam Natl Museum Nat, 18th Hoang Quoc Viet Roacl, Hanoi, Vietnam
6.Chongqing Normal Univ, Coll Life Sci, Chongqing 400047, Peoples R China
7.MNHN, Steigestr 78, D-69412 Eberbach, Germany
8.Univ Sci, Vietnam Natl Univ Ho Chi Minh City VNUHCM, Dept Ecol Evolutionary Biol, 227 Nguyen Van Cu St,Dist 5, Ho Chi Minh City, Vietnam
9.Univ Turku, Dept Biol, Turku, Finland
10.Missouri Bot Garden, 4344 Shaw Blvd, St Louis, MO 63110 USA
Recommended Citation
GB/T 7714
Zhang, Liang,Ngan Thi Lu,Zhou, Xin-Mao,et al. A plastid phylogeny of the Old World fern genus Leptochilus (Polypodiaceae): Implications for cryptic speciation and progressive colonization from lower to higher latitudes[J]. MOLECULAR PHYLOGENETICS AND EVOLUTION,2019,134:311-322.
APA Zhang, Liang.,Ngan Thi Lu.,Zhou, Xin-Mao.,Chen, De-Kui.,Knapp, Ralf.,...&Zhang, Li-Bing.(2019).A plastid phylogeny of the Old World fern genus Leptochilus (Polypodiaceae): Implications for cryptic speciation and progressive colonization from lower to higher latitudes.MOLECULAR PHYLOGENETICS AND EVOLUTION,134,311-322.
MLA Zhang, Liang,et al."A plastid phylogeny of the Old World fern genus Leptochilus (Polypodiaceae): Implications for cryptic speciation and progressive colonization from lower to higher latitudes".MOLECULAR PHYLOGENETICS AND EVOLUTION 134(2019):311-322.
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