J Integr Plant Biol. ›› 1997, Vol. 39 ›› Issue (1): -.

• Research Articles •    

Ultrastructural Observations on Nuclear Matrix in the Pollen Mother Cells of Lily

Xu Tao, Zhang Xiao-hong, Nie Xiu-wan and Zheng Guo-chang (Cheng K. C)   

Abstract: The nuclear matrix (NM) of pollen mother cells (PMC) of Lilium davidii var. willmottiae (Wilson) Roffill was studied using selective extraction, embeddment-free electron microscopy and whole mount cell preparation. A complex internal substructure, which is similar to the nuclear matrix in vertebrate cells, was observed in the nucleus of PMCs at prophase I . These nuclear matrices, comprising delicate protein filaments, spreaded over the nuclear region. The diameters of NM filaments were in the range of 5 - 15 nm. Nueleoli and chromosomes were found to be connected with the NM filament network. The NM was proposed to offer a framework for the topological change of chromatin/chromosome, and might be involved in the construction of the scaffold of metophase chromosome.

Key words: Lilium davidii var. willmottiae, Pollen mother cell, Nuclear matrix, Ultrastruture

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