Anatomically preserved strobili and leaves from the Permian of China (Dorsalistachyaceae, fam. nov.) broaden knowledge of Noeggerathiales and constrain their possible taxonomic affinities

doi:10.1186/s13059-017-1178-2

	Anatomically preserved strobili and leaves from the Permian of China (Dorsalistachyaceae, fam. nov.) broaden knowledge of Noeggerathiales and constrain their possible taxonomic affinities
	Wang, Shi-Jun ; Bateman, Richard M.; Spencer, Alan R. T.; Wang, Jun 3; Shao, Longyi 4; Hilton, Jason 5,6
	2017
发表期刊	AMERICAN JOURNAL OF BOTANY
ISSN	0002-9122
卷号	104 期号:1 页码:127-149
摘要	PREMISE OF THE STUDY: Noeggerathiales are an extinct group of heterosporous shrubs and trees that were widespread and diverse during the Pennsylvanian-Permian Epochs (323-252 Ma) but are of controversial taxonomic affinity. Groups proposed as close relatives include leptosporangiate ferns, sphenopsids, progymnosperms, or the extant eusporangiate fern Tmesipteris. Previously identified noeggerathialeans lacked anatomical preservation, limiting taxonomic comparisons to their external morphology and spore structure. We here document from the upper Permian of China the first anatomically preserved noeggerathialeans, which enhance the perceived distinctiveness of the group and better indicate its systematic affinity. METHODS: We describe in detail the newly discovered, anatomically preserved heterosporous strobilus Dorsalistachya quadrisegmentorum, gen. et sp. nov., and redescribe its suspected foliar correlate, the pinnate leaf Plagiozamites oblongifolius. KEY RESULTS: Plagiozamites possesses an omega (O)-shaped vascular trace and prominent cortical secretory cavities-a distinctive anatomical organization that is echoed in the newly discovered strobili. Dorsalistachya strobili bear highly dissected sporophylls alternately in two vertical rows, suggesting that they are homologs of leaf pinnae. If so, the strobilus is strictly a pseudostrobilus and consists of sporangium-bearing units that are one hierarchical level below true sporophylls. The sporophylls bear four microsporangia on the lower (abaxial) surface, occasionally interspersed with short longitudinal rows of megasporangia. A single functional megaspore develops within each winged megasporangium, suggesting adaptation for dispersal as a single unit. CONCLUSIONS: Dorsalistachya presents a unique combination of reproductive features that amply justifies establishment of a new family, Dorsalistachyaceae. Noeggerathiales represent a distinct taxonomic Order of free-sporing plants that most resembles early-divergent eusporangiate ferns and the more derived among the extinct progymnosperms. By the early Permian, noeggerathialeans had attained levels of reproductive sophistication similar to the most derived among the Paleozoic sphenophytes and lycophytes, but their heterosporous life history may have contributed to their extinction during the Triassic climatic aridification.
关键词	3D reconstruction Dorsalistachya Dorsalistachyaceae eusporangiate fern heterospory Noeggerathiales paleobotany Permian phylogeny progymnosperm Xuanwei Formation
学科领域	Biotechnology & Applied Microbiology ; Genetics & Heredity
DOI	10.1186/s13059-017-1178-2
收录类别	SCI
语种	英语
WOS关键词	INNER-MONGOLIA ; DISCINITES NOEGGERATHIALES ; EVOLUTIONARY HISTORY ; SEED PLANTS ; PHYLOGENY ; FOSSIL ; FERNS ; RECONSTRUCTION ; ARCHAEOPTERIS ; MONILOPHYTES
WOS记录号	WOS:000397112300001
出版者	WILEY
文献子类	Article
出版地	HOBOKEN
EISSN	1537-2197
资助机构	National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [41162001, 41172014, 41372011, 41530101] ; State Key Laboratory of Palaeobiology and Stratigraphy (Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences)Chinese Academy of Sciences [133116, 123103] ; Chinese Academy of ScienceChinese Academy of Sciences [KZCX2-EW-120] ; National Basic Research Program of China (973 Program)National Basic Research Program of China [2012CB821901] ; Natural Environment Research CouncilUK Research & Innovation (UKRI)Natural Environment Research Council (NERC) [NE/E004369/1] ; NERCUK Research & Innovation (UKRI)Natural Environment Research Council (NERC) [NE/E004369/1] Funding Source: UKRI
作者邮箱	j.m.hilton@bham.ac.uk
作品OA属性	gold, Green Published
引用统计	被引频次：49[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ibcas.ac.cn/handle/2S10CLM1/22006
专题	系统与进化植物学国家重点实验室
作者单位	1.Chinese Acad Sci, Inst Bot, State Key Lab Systemat & Evolutionary Bot, Beijing 100093, Peoples R China 2.Bateman, Richard M.] Royal Bot Gardens Kew, Richmond TW9 3DS, Surrey, England 3.Spencer, Alan R. T.] Imperial Coll London, Dept Earth Sci & Engn, London SW7 2BP, England 4.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, State Key Lab Palaeobiol & Stratig, Nanjing 210008, Jiangsu, Peoples R China 5.China Univ Min & Technol, Sch Geosci & Surveying Engn, State Key Lab Coal Resources & Safe Min, Beijing 100083, Peoples R China 6.Univ Birmingham, Birmingham Inst Forestry Res, Birmingham B15 2TT, W Midlands, England 7.Univ Birmingham, Sch Geog Earth & Environm Sci, Birmingham B15 2TT, W Midlands, England
推荐引用方式 GB/T 7714	Wang, Shi-Jun,Bateman, Richard M.,Spencer, Alan R. T.,et al. Anatomically preserved strobili and leaves from the Permian of China (Dorsalistachyaceae, fam. nov.) broaden knowledge of Noeggerathiales and constrain their possible taxonomic affinities[J]. AMERICAN JOURNAL OF BOTANY,2017,104(1):127-149.
APA	Wang, Shi-Jun,Bateman, Richard M.,Spencer, Alan R. T.,Wang, Jun,Shao, Longyi,&Hilton, Jason.(2017).Anatomically preserved strobili and leaves from the Permian of China (Dorsalistachyaceae, fam. nov.) broaden knowledge of Noeggerathiales and constrain their possible taxonomic affinities.AMERICAN JOURNAL OF BOTANY,104(1),127-149.
MLA	Wang, Shi-Jun,et al."Anatomically preserved strobili and leaves from the Permian of China (Dorsalistachyaceae, fam. nov.) broaden knowledge of Noeggerathiales and constrain their possible taxonomic affinities".AMERICAN JOURNAL OF BOTANY 104.1(2017):127-149.

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