Abstract
Pollen-stigma interactions on wet- and dry-type stigmas involve similar processes: the hydration of the pollen, followed by pollen tube growth and penetration of the stigma. Furthermore, in some species, identical molecules, namely lipids, are used to achieve this. In addition to lipids, oleosin-like proteins of the pollen coat of dry-type stigma plants have been shown to be involved in pollen-stigma interactions. However, little information is present about the proteins on the surface of pollen of wet-type stigma plants, in particular that of the Solanaceae. To analyze proteins from the surface of pollen of Nicotiana tabacum (tobacco), a solanaceous plant, we used an antiserum raised against Brassica pollen coat, a dry-type stigma plant of the Brassicaceae. In addition we used a molecular approach to identify tobacco homologues of oleosin-like genes. Our results show that no proteins similar to Brassica oleracea pollen coat proteins are present on the surface of tobacco pollen, and that oleosin-like genes are not expressed in tobacco anthers or stigmas.
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Bots, M., Mariani, C. Oleosin-like proteins are not present on the surface of tobacco pollen. Sex Plant Reprod 16, 223–226 (2004). https://doi.org/10.1007/s00497-003-0191-7
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DOI: https://doi.org/10.1007/s00497-003-0191-7