Phylogeny and Evolution of Bracts and Bracteoles in Tacca (Dioscoreaceae)
Zhang, Ling1; Li, Hong-Tao2,3; Gao, Lian-Ming2,3; Yang, Jun-Bo2,3; Li, De-Zhu2,3; Cannon, Charles H.1,4; Chen, Jin1; Li, Qing-Jun1
2011-11-01
发表期刊JOURNAL OF INTEGRATIVE PLANT BIOLOGY
ISSN1672-9072
卷号53期号:11页码:901-911
摘要Most species in the genus Tacca (Dioscoreaceae) feature green to black purple, conspicuous inflorescence involucral bracts with variable shapes, motile filiform appendages (bracteoles), and diverse types of inflorescence morphology. To infer the evolution of these inflorescence traits, we reconstructed the molecular phylogeny of the genus, using DNA sequences from one nuclear, one mitochondrial, and three plastid loci (Internal Transcribed Spacer (ITS), atpA, rbcL, trnL-F, and trnH-psbA). Involucres and bracteoles characters were mapped onto the phylogeny to analyze the sequence of inflorescence trait evolution. In all analyses, species with showy involucres and bracteoles formed the most derived clade, while ancestral Tacca had small and plain involucres and short bracteoles, namely less conspicuous inflorescence structures. Two of the species with the most elaborate inflorescence morphologies (T. chantrieri in southeast China and T. integrifolia in Tibet), are predominantly self-pollinated, indicating that these conspicuous floral displays have other functions rather than pollinator attraction. We hypothesize that the motile bracteoles and involucres may facilitate selfing; display photosynthesis in the dim understory, and protect flowers from herbivory.
关键词Atpa Bracteoles Bracts Its Molecular Phylogeny Rbcl Tacca Trnh-psba Trnl-f
资助信息Chinese Academy of Science[KSCX2-YW-Z-0904]; National Natural Science Foundation of China[30670131]; Yunnan Provincial Natural Science Foundation[2006C0055M]
学科领域Biochemistry & Molecular Biology ; Plant Sciences
DOI10.1111/j.1744-7909.2011.01076.x
收录类别SCI
语种英语
WOS研究方向Biochemistry & Molecular Biology ; Plant Sciences
WOS类目Biochemistry & Molecular Biology ; Plant Sciences
WOS记录号WOS:000297291000006
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被引频次:7[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.kib.ac.cn/handle/151853/3814
专题中国科学院东亚植物多样性与生物地理学重点实验室
作者单位1.Chinese Acad Sci, Key Lab Trop Forest Ecol, Xishuangbanna Trop Bot Garden, Mengla 666303, Yunnan, Peoples R China
2.Chinese Acad Sci, Key Lab Biodivers & Biogeog, Kunming 650204, Peoples R China
3.Chinese Acad Sci, Germplasm Bank Wild Species SW China, Kunming Inst Bot, Kunming 650204, Peoples R China
4.Texas Tech Univ, Dept Biol, Lubbock, TX 79390 USA
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Zhang, Ling,Li, Hong-Tao,Gao, Lian-Ming,et al. Phylogeny and Evolution of Bracts and Bracteoles in Tacca (Dioscoreaceae)[J]. JOURNAL OF INTEGRATIVE PLANT BIOLOGY,2011,53(11):901-911.
APA Zhang, Ling.,Li, Hong-Tao.,Gao, Lian-Ming.,Yang, Jun-Bo.,Li, De-Zhu.,...&Li, Qing-Jun.(2011).Phylogeny and Evolution of Bracts and Bracteoles in Tacca (Dioscoreaceae).JOURNAL OF INTEGRATIVE PLANT BIOLOGY,53(11),901-911.
MLA Zhang, Ling,et al."Phylogeny and Evolution of Bracts and Bracteoles in Tacca (Dioscoreaceae)".JOURNAL OF INTEGRATIVE PLANT BIOLOGY 53.11(2011):901-911.
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