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Atomic force microscopic observation on substructure of pollen exine in Cedrus deodara and Metasequoia glyptostroboides
Xing, SP; Li, BS; Wang, C; Hu, YX; Lin, JX
2000-08-01
Source PublicationCHINESE SCIENCE BULLETIN
ISSN1001-6538
Volume45Issue:16Pages:1500-1503
AbstractThe substructure of pollen exine in Cedrus deodara (Roxb.) Loud. and Metasequoia glyptostroboides Hu et Cheng has been examined with an atomic force microscope (AFM). The results indicate that the exine substructure units containing sporopollenin in two species are similar in shape, which are granular, but slightly different in size. In Cedrus the substructure unit of pollen exine appears to be 56-99 nm long and 42-74 nm wide, while in Metasequoia it appears to be 81-118 nm long and 43-98 nm wide. It has been observed that the subunits of pollen exine in Cedrus arranged tightly to form short-rod-like or spheroidal pollen exine units, several or more than ten of which formed an island-like structure. There are various spaces among these island-like structures which are interconnected to occupy the entire pollen exine. In Metasequoia, the subunits of pollen exine also arranged tightly with a distribution tendency of cluster of 3-10, however, no obvious boundary exists among these clusters. From our results, it is concluded that there is no tendency of helical arrangement for the subunits of pollen exine in Cedrus and Metasequoia, and the results support Southworth' view that subunits of pollen exine are granular shape in lattice structure.
KeywordCedrus Deodara Metasequoia Glyptostroboides Atomic Force Microscope Pollen Exine Substructure Sporopollenin
Indexed BySCI
Language英语
WOS IDWOS:000089247600014
PublisherSCIENCE PRESS
Citation statistics
Cited Times:6[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/76440
Collection中国科学院化学研究所
Corresponding AuthorLin, JX
Affiliation1.Chinese Acad Sci, Inst Bot, Beijing 100093, Peoples R China
2.Chinese Acad Sci, Inst Chem, Beijing 100080, Peoples R China
Recommended Citation
GB/T 7714
Xing, SP,Li, BS,Wang, C,et al. Atomic force microscopic observation on substructure of pollen exine in Cedrus deodara and Metasequoia glyptostroboides[J]. CHINESE SCIENCE BULLETIN,2000,45(16):1500-1503.
APA Xing, SP,Li, BS,Wang, C,Hu, YX,&Lin, JX.(2000).Atomic force microscopic observation on substructure of pollen exine in Cedrus deodara and Metasequoia glyptostroboides.CHINESE SCIENCE BULLETIN,45(16),1500-1503.
MLA Xing, SP,et al."Atomic force microscopic observation on substructure of pollen exine in Cedrus deodara and Metasequoia glyptostroboides".CHINESE SCIENCE BULLETIN 45.16(2000):1500-1503.
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