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Pollination of Cretaceous flowers
Bao, Tong1,2,3; Wang, Bo (王博)1,2,4; Li, Jianguo (李建国)1,2; Dilcher, David5
2019-12-03
Source PublicationPROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
ISSN0027-8424
Volume116Issue:49Pages:24707-24711
Abstract

Insect pollination of flowering plants (angiosperms) is responsible for the majority of the world's flowering plant diversity and is key to the Cretaceous radiation of angiosperms. Although both insects and angiosperms were common by the mid-Cretaceous, direct fossil evidence of insect pollination is lacking. Direct evidence of Cretaceous insect pollination is associated with insect-gymnosperm pollination. Here, we report a specialized beetle-angiosperm pollination mode from mid-Cretaceous Burmese amber (99 mega-annum [Ma]) in which a tumbling flower beetle (Mordellidae), Angimordella burmitina gen. et sp. nov., has many tricolpate pollen grains attached. A. burmitina exhibits several specialized body structures for flower-visiting behavior including its body shape and pollen-feeding mouthparts revealed by X-ray microcomputed tomography (micro-CT). The tricolpate pollen in the amber belongs to the eudicots that comprise the majority of extant angiosperm species. These pollen grains exhibit zoophilous pollination attributes including their ornamentation, size, and clumping characteristics. Tricolpate pollen grains attached to the beetle's hairs are revealed by confocal laser scanning microscopy, which is a powerful tool for investigating pollen in amber. Our findings provide direct evidence of insect pollination of Cretaceous angiosperms, extending the range insect-angiosperm pollination association by at least 50 million years. Our results support the hypothesis that specialized insect pollination modes were present in eudicots 99 million years ago.

Keywordamber insect angiosperm pollen paleoecology
DOI10.1073/pnas.1916186116
Language英语
WOS KeywordINSECT POLLINATION ; ANGIOSPERM ; RADIATION ; BEETLES ; EUDICOT ; DIVERSIFICATION ; MORDELLIDAE ; EVOLUTION ; POLLEN ; ORIGIN
Funding ProjectSecond Tibetan Plateau Scientific Expedition and Research Grant[2019QZKK0706] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB26000000] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDA19050101] ; National Natural Science Foundation of China[41622201] ; National Natural Science Foundation of China[41688103] ; National Natural Science Foundation of China[41872004] ; Key Laboratory of the Zoological Systematics and Evolution of the Chinese Academy of Sciences[Y229YX5105]
WOS Research AreaScience & Technology - Other Topics
WOS SubjectMultidisciplinary Sciences
WOS IDWOS:000500804600050
Funding OrganizationSecond Tibetan Plateau Scientific Expedition and Research Grant ; Strategic Priority Research Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; Key Laboratory of the Zoological Systematics and Evolution of the Chinese Academy of Sciences
PublisherNATL ACAD SCIENCES
Citation statistics
Document Type期刊论文
Identifierhttp://ir.nigpas.ac.cn/handle/332004/29389
Collection中国科学院南京地质古生物研究所
Corresponding AuthorWang, Bo (王博); Dilcher, David
Affiliation1.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, State Key Lab Palaeobiol & Stratig, Nanjing 210008, Peoples R China
2.Chinese Acad Sci, Ctr Excellence Life & Paleoenvironm, Nanjing 210008, Peoples R China
3.Univ Bonn, Inst Geowissensch, D-53115 Bonn, Germany
4.Chinese Acad Sci, Inst Zool, Key Lab Zool Systemat & Evolut, Beijing 100101, Peoples R China
5.Indiana Univ, Dept Geol & Atmospher Sci, Bloomington, IN 47405 USA
First Author AffilicationNanjing Institute of Geology and Palaeonotology,CAS
Corresponding Author AffilicationNanjing Institute of Geology and Palaeonotology,CAS
Recommended Citation
GB/T 7714
Bao, Tong,Wang, Bo ,Li, Jianguo ,et al. Pollination of Cretaceous flowers[J]. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,2019,116(49):24707-24711.
APA Bao, Tong,Wang, Bo ,Li, Jianguo ,&Dilcher, David.(2019).Pollination of Cretaceous flowers.PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,116(49),24707-24711.
MLA Bao, Tong,et al."Pollination of Cretaceous flowers".PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA 116.49(2019):24707-24711.
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