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

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	Evidence of simultaneous occurrence of tylosis formation and fungal interaction in a late Cenozoic angiosperm from the eastern Himalaya
	Khan, Mahasin Ali 4; Bera, Meghma 4; Spicer, Robert A.; Spicer, Teresa E. V.; Bera, Subir 4
刊名	REVIEW OF PALAEOBOTANY AND PALYNOLOGY
	2018
卷号	259 页码:171-184
关键词	Tyloses Gmelina siwalika Fossil fungi Host response Cenozoic Eastern Himalaya
ISSN号	0034-6667
DOI	10.1016/j.revpalbo.2018.10.004
文献子类	Article
英文摘要	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.
学科主题	Plant Sciences ; Paleontology
电子版国际标准刊号	1879-0615
出版地	AMSTERDAM
WOS关键词	NEOGENE SIWALIK FORESTS ; FOSSIL WOOD ; CONIFER ; SUBERIN ; EVOLUTIONARY ; OCCLUSIONS ; ANATOMY ; EOCENE ; PLANTS ; XYLEM
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000453622000016
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]
内容类型	期刊论文
源URL	[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.Spicer, Robert A.] Open Univ, Sch Environm Earth & Ecosyst Sci, Milton Keynes MK7 6AA, Bucks, England 2.Spicer, Robert A.] Chinese Acad Sci, Xishuangbanna Trop Bot Garden, Mengla 666303, Yunnan, Peoples R China 3.Spicer, Teresa E. V.] Chinese Acad Sci, Inst Bot, 20 Nanxincun, Beijing 100093, Peoples R China 4.Sidho Kanho Birsha Univ, Dept Bot, Ranchi Rd, Purulia 723104, India 5.Univ Calcutta, Dept Bot, Ctr Adv Study, 35 BC Rd, Kolkata 700019, India
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.