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Class III pistil-specific extensin-like proteins (PELPIII) are chimeric hydroxyproline-rich glycoproteins with properties of both extensins and arabinogalactan proteins. The abundance and specific localization of PELPIII in the intercellular matrix (IM) of tobacco (Nicotiana tabacum) stylar transmitting tissue, and translocation of PELPIII from the IM into the pollen tube wall after pollination, presume...
Abstract. Until recently, little knowledge existed about the molecular mechanisms regulating male gamete development. This was mainly due to the low transcriptional activity and the cellular inaccessibility of the generative and sperm cells that are enclosed by the vegetative cell in pollen. In order to study sperm cell development and possible preferential fusion during double fertilization, we have...
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