Function of Golgi vesicles in relation to cell wall synthesis in germinating Petunia pollen. II. Chemical composition of Golgi vesicles and pollen tube wall

SUMMARY Golgi vesicles and pollen tube walls isolated from germinating Petunia pollen were chemically analysed. The protein: lipid ratio of the Golgi vesicles was 70:30. The total carbohydrate contents of the Golgi vesicles and pollen tube wall were found to be 7.2% and 61% of the dry weights respectively. The alkali insoluble material of the pollen tube wall contained 6% of the total carbohydrate; this material has been found to be cellulosic in nature. The sugar composition of the polysaccharides extracted from the Golgi vesicles and the tube wall is presented and discussed.