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Type: Journal article
Title: Histone H3 variants in male gametic cells of lily and H3 methylation in mature pollen
Author: Okada, T.
Singh, M.
Bhalla, P.
Citation: Plant Molecular Biology: An International Journal on Molecular Biology, Molecular Genetics and Biochemistry, 2006; 62(4):503-512
Publisher: Springer
Issue Date: 2006
ISSN: 0167-4412
Statement of
Takashi Okada, Mohan B. Singh, Prem L. Bhalla
Abstract: Histones are vital structural proteins of chromatin that influence its dynamics and function. The tissue-specific expression of histone variants has been shown to regulate the expression of specific genes and genomic stability in animal systems. Here we report on the characterization of five histone H3 variants expressed in Lilium generative cell. The gcH3 and leH3 variants show unique sequence diversity by lacking a conserved lysine residue at position 9 (H3K9). The gH3 shares conserved structural features with centromeric H3 of Arabidopsis. The gH3 variant gene is strongly expressed in generative cells and gH3 histone is incorporated in to generative cell chromatin. The lysine residue of H3 at position 4 (H3K4) is highly methylated in the nuclei of generative cells of mature pollen, while methylation of H3K4 is low in vegetative cell nuclei. Taken together, these results suggest that male gametic cells of Lilium have unique chromatin state and histone H3 variants and their methylation might be involved in gene regulation of male gametic cells.
Keywords: Generative cell; Histone H3; Lilium longiflorum; Male gamete; Histone variants; Centromeric histone H3
Rights: © Springer Science+Business Media B.V. 2006
DOI: 10.1007/s11103-006-9036-8
Appears in Collections:Agriculture, Food and Wine publications
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