Evidence of simultaneous occurrence of tylosis formation and fungal interaction in a late Cenozoic angiosperm from the eastern Himalaya

doi:10.1016/j.revpalbo.2018.10.004

	Evidence of simultaneous occurrence of tylosis formation and fungal interaction in a late Cenozoic angiosperm from the eastern Himalaya
	Khan, Mahasin Ali 1; Bera, Meghma 1; Spicer, Robert A.; Spicer, Teresa E. V.; Bera, Subir 1
	2018
发表期刊	REVIEW OF PALAEOBOTANY AND PALYNOLOGY
ISSN	0034-6667
卷号	259 页码:171-184
摘要	Information on whether tyloses in fossil angiospermic plants form specifically in response to infestation with pathogenic fungi has been lacking so far, and thus the evolutionary history of tylosis formation as a physical restraint strategy against the advancing fungi remains unresolved. Our study addresses this knowledge lacuna. Carbonized woods were recovered from the upper part of the Siwalik succession (Kimin Formation: late Pliocene to early Pleistocene) of Arunachal Pradesh, eastern Himalaya. Samples from different portions of the wood remains were prepared by using standard thin sectioning techniques and studied under transmitted light compound and scanning electron microscopes. The Plio-Pleistocene wood remains are attributed to Gmelina arborea Roxb. (Lamiaceae) as Gmelina siwalika Khan, Bera M et Bera S, sp. nov. Numerous well-preserved tyloses were found mainly in the central heartwood region of the fossil wood. Rare fungal remains indicative of early-stage colonization are characterized by septate fungal hyphae extending through the vascular ray system within the secondary xylem, and fungal spores. As tyloses are present in large numbers and formed before the spread of fungal remains, they served as an effective physical restraint to the spread of the fungi. We conclude that tylosis formation contributed to an antagonistic relationship between pathogenic fungi and Gmelina plant in Neogene paleoecosystems of the eastern Himalaya. This report also demonstrates that the development of this histological protrusion has been a significant process in woody plants since Cenozoic. (C) 2018 Elsevier B.V. All rights reserved.
关键词	Tyloses Gmelina siwalika Fossil fungi Host response Cenozoic Eastern Himalaya
学科领域	Plant Sciences ; Paleontology
DOI	10.1016/j.revpalbo.2018.10.004
收录类别	SCI
语种	英语
WOS关键词	NEOGENE SIWALIK FORESTS ; FOSSIL WOOD ; CONIFER ; SUBERIN ; EVOLUTIONARY ; OCCLUSIONS ; ANATOMY ; EOCENE ; PLANTS ; XYLEM
WOS记录号	WOS:000453622000016
出版者	ELSEVIER
文献子类	Article
出版地	AMSTERDAM
EISSN	1879-0615
资助机构	Department of Science and Technology (DST), Government of India, New DelhiDepartment of Science & Technology (India) [SR/S4/ES67/2003] ; NERC/NSFC BETR Project [NE/P013805/1]
作者邮箱	berasubir@yahoo.co.in
引用统计	被引频次：10[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/2S10CLM1/20652
专题	系统与进化植物学国家重点实验室
作者单位	1.Sidho Kanho Birsha Univ, Dept Bot, Ranchi Rd, Purulia 723104, India 2.Univ Calcutta, Dept Bot, Ctr Adv Study, 35 BC Rd, Kolkata 700019, India 3.Spicer, Robert A.] Open Univ, Sch Environm Earth & Ecosyst Sci, Milton Keynes MK7 6AA, Bucks, England 4.Spicer, Robert A.] Chinese Acad Sci, Xishuangbanna Trop Bot Garden, Mengla 666303, Yunnan, Peoples R China 5.Spicer, Teresa E. V.] Chinese Acad Sci, Inst Bot, 20 Nanxincun, Beijing 100093, Peoples R China
推荐引用方式 GB/T 7714	Khan, Mahasin Ali,Bera, Meghma,Spicer, Robert A.,et al. Evidence of simultaneous occurrence of tylosis formation and fungal interaction in a late Cenozoic angiosperm from the eastern Himalaya[J]. REVIEW OF PALAEOBOTANY AND PALYNOLOGY,2018,259:171-184.
APA	Khan, Mahasin Ali,Bera, Meghma,Spicer, Robert A.,Spicer, Teresa E. V.,&Bera, Subir.(2018).Evidence of simultaneous occurrence of tylosis formation and fungal interaction in a late Cenozoic angiosperm from the eastern Himalaya.REVIEW OF PALAEOBOTANY AND PALYNOLOGY,259,171-184.
MLA	Khan, Mahasin Ali,et al."Evidence of simultaneous occurrence of tylosis formation and fungal interaction in a late Cenozoic angiosperm from the eastern Himalaya".REVIEW OF PALAEOBOTANY AND PALYNOLOGY 259(2018):171-184.

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