Phylogenetic position of Kontumia (Polypodiaceae) inferred from four chloroplast DNA regions
Kim, Changkyun; Zha, Hong-Guang; Deng, Tao; Sun, Hang; Wu, Su-Gong
Corresponding AuthorSun, H (reprint author), Chinese Acad Sci, Key Lab Biodivers & Biogeog, Kunming Inst Bot, Kunming 650204, Peoples R China.,hsun@mail.kib.ac.cn
2013-03-01
Source PublicationJOURNAL OF SYSTEMATICS AND EVOLUTION
ISSN1674-4918
Volume51Issue:2Pages:154-163
Abstract

The phylogenetic position of the monotypic genus Kontumia (Polypodiaceae) is contentious. It has been suggested that Kontumia is related to Gymnogrammitis dareiformis (Drynarioideae) based on spore ornamentation and blade dissection, or it has been assigned as a member of microsoroid ferns (Microsoroideae) based on the shape of rhizome scales. In the present study, we determined the phylogenetic position of K. heterophylla using four chloroplast DNA regions (rbcL, atpB, rps4 + rps4-trnS intergenic spacer [IGS], and trnL-F IGS). A parsimony consensus tree indicated that K. heterophylla is not related to G. dareiformis, but is nested within the Leptochilus lineage of Microsoroideae. This relationship is also supported by sharing of clathrate scales on the rhizome, which is not found in G. dareiformis. Although marked morphological disparities are found between K. heterophylla and the Leptochilus lineage in terms of leaf dissection, fertile-sterile leaf differentiation, and sori arrangement, our results indicate that these characters have evolved independently several times in Polypodiaceae.

KeywordFern Kontumia Leptochilus Lineage Microsoroideae Molecular Phylogeny Polypodiaceae
Subject AreaPlant Sciences
Indexed BySCI
Language英语
WOS Research AreaPlant Sciences
WOS SubjectPlant Sciences
WOS IDWOS:000325127900004
Citation statistics
Cited Times:12[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.kib.ac.cn/handle/151853/17297
Collection中国科学院东亚植物多样性与生物地理学重点实验室
AffiliationChinese Acad Sci, Key Lab Biodivers & Biogeog, Kunming Inst Bot, Kunming 650204, Peoples R China
Recommended Citation
GB/T 7714
Kim, Changkyun,Zha, Hong-Guang,Deng, Tao,et al. Phylogenetic position of Kontumia (Polypodiaceae) inferred from four chloroplast DNA regions[J]. JOURNAL OF SYSTEMATICS AND EVOLUTION,2013,51(2):154-163.
APA Kim, Changkyun,Zha, Hong-Guang,Deng, Tao,Sun, Hang,&Wu, Su-Gong.(2013).Phylogenetic position of Kontumia (Polypodiaceae) inferred from four chloroplast DNA regions.JOURNAL OF SYSTEMATICS AND EVOLUTION,51(2),154-163.
MLA Kim, Changkyun,et al."Phylogenetic position of Kontumia (Polypodiaceae) inferred from four chloroplast DNA regions".JOURNAL OF SYSTEMATICS AND EVOLUTION 51.2(2013):154-163.
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