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	Stem Anatomy Confirms Tingia unita Is a Progymnosperm
通讯作者	Wang, Jun(jun.wang@nigpas.ac.cn)
	Yang, Yang1,2,3; Wang, Shi-Jun4; Wang, Jun1,2,3
	2023-04-01
发表期刊	BIOLOGY-BASEL
卷号	12期号:4页码:17
摘要	Simple Summary The systematic position of Noeggerathiales was long uncertain until the whole plant species Paratingia wuhaia was restored and proved to belong to progymnosperms due to its spore-producing fertile organ and secondary wood producing a large stem. However, whether Tingia Halle as the most diversified genus in Noeggerathiales belongs to progymnosperms has yet remained uncertain as the anatomy of the main stem of this plant is unknown, that is, whether the anatomy of the main stem with the anatomical characteristics of gymnosperms woods remains uncertain. Here, the stem anatomy of Tingia unita is presented based on fossil materials from the early Permian Wuda Tuff Flora in Wuda Coalfield, Wuhai City, Inner Mongolia, China. The well-developed secondary wood, plus previously accumulated evidence of the spore-bearing nature of this plant, confirms that this genus belongs to progymnosperms. As such, the genera Tingia and Paratingia are all certainly progymnosperms in affinity. Tingia Halle, a representative genus of the Cathaysia Flora, has been studied for nearly 100 years, being a small heterosporous tree based on the gross morphology of Tingia unita. However, the systematic affinity of Tingia is uncertain. Now, a number of well-preserved fossils of T. unita from the Taiyuan Formation of Lower Permian in Wuda Coalfield, Wuhai City, Inner Mongolia facilitates an examination of wood anatomy. The stem anatomy of T. unita shows parenchymatous pith, endarch primary xylem, pycnoxylic secondary xylem, and cortex, typically a type of gymnosperm wood, which taken together with pteridophytic reproduction, certainly evidences that Tingia Halle is a progymnosperm. In addition, Tingia together with Paratingia provide strong evidence to link the Noeggerathiales with progymnosperms.
关键词	stem anatomy scalariform bordered pits Noeggerathiales early permian
DOI	10.3390/biology12040494
收录类别	SCI
语种	英语
关键词[WOS]	PERMIAN VEGETATIONAL POMPEII ; INNER-MONGOLIA ; SP NOV. ; TRILOBOXYLON-ASHLANDICUM ; SECONDARY PHLOEM ; SP. NOV. ; SP-N ; GEN ; PTERIDOSPERM ; PROTOPITYS
资助项目	National Natural Science Foundation of China[42230210] ; Strategic Priority Research Program (B) of Chinese Academy of Sciences[XDB26000000]
WOS研究方向	Life Sciences & Biomedicine - Other Topics
WOS类目	Biology
WOS记录号	WOS:000978936500001
项目资助者	National Natural Science Foundation of China ; Strategic Priority Research Program (B) of Chinese Academy of Sciences
出版者	MDPI
文献类型	期刊论文
条目标识符	http://ir.nigpas.ac.cn/handle/332004/42248
专题	中国科学院南京地质古生物研究所
通讯作者	Wang, Jun
作者单位	1.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, State Key Lab Palaeobiol & Stratig, 39 East Beijing Rd, Nanjing 210008, Peoples R China 2.Chinese Acad Sci, Ctr Excellence Life & Paleoenvironment, 39 East Beijing Rd, Nanjing 210008, Peoples R China 3.Univ Chinese Acad Sci, 19 A Yuquan Rd, Beijing 100049, Peoples R China 4.Chinese Acad Sci, Inst Bot, State Key Lab Systemat & Evolutionary Bot, Beijing 100093, Peoples R China
第一作者单位	中国科学院南京地质古生物研究所
通讯作者单位	中国科学院南京地质古生物研究所
推荐引用方式 GB/T 7714	Yang, Yang,Wang, Shi-Jun,Wang, Jun. Stem Anatomy Confirms Tingia unita Is a Progymnosperm[J]. BIOLOGY-BASEL,2023,12(4):17.
APA	Yang, Yang,Wang, Shi-Jun,&Wang, Jun.(2023).Stem Anatomy Confirms Tingia unita Is a Progymnosperm.BIOLOGY-BASEL,12(4),17.
MLA	Yang, Yang,et al."Stem Anatomy Confirms Tingia unita Is a Progymnosperm".BIOLOGY-BASEL 12.4(2023):17.

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