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Hydroxyproline-rich glycoproteins in plant reproductive tissues: structure, functions and regulation

Wu, H., De Graaf, Barend H. J. ORCID:, Mariani, C. and Cheung, A. Y. 2001. Hydroxyproline-rich glycoproteins in plant reproductive tissues: structure, functions and regulation. Cellular and Molecular Life Sciences 58 (10) , pp. 1418-1429. 10.1007/PL00000785

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Abstract. The plant reproductive process of pollination involves a series of interactions between the male gametophyte (the pollen grain or pollen tube) and extracellular matrix (ECM) molecules secreted by different cell types along the pollen tube growth pathway in the female organ, the pistil. These interactions are believed to signal and regulate the pollen tube growth process to effect successful delivery of the sperm cells to the ovules where fertilization takes place. Hydroxyproline-rich glycoproteins secreted by plant cells are believed to play a broad range of functions, ranging from providing structural in- CMLS, Cell. Mol. Life Sci. 58 (2001) 1418–1429 1420-682X/01/101418-12 $ 1.50 + 0.20/0 © Birkhäuser Verlag, Basel, 2001 CMLS Cellular and Molecular Life Sciences tegrity to mediating cell-cell interactions and communication. The pistil and pollen tube ECM is enriched in these highly glycosylated proteins. Our discussions here will focus on a number of these proteins for which most information has been available, from Nicotiana tabacum, its self-incompatible relative N. alata, and Zea mays. In addition, the regulation of the synthesis and glyco-modification of one of these proteins, TTS (transmitting tissue- specific) protein from N. tabacum will be discussed in the light of how differential glycosylation may be used to regulate molecular interactions within the ECM.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Biosciences
Publisher: Springer Verlag
ISSN: 1420-682X
Last Modified: 25 Oct 2022 10:06

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