The effect of 2-thiouracil on RNA synthesis in pollen tubesof Nicotiana alata

RNA, Proteins and Polyamines During Tube Growth in Germinating Apple Pollen

“…Proteins are known to be released from the pollen into the medium as recently shown for apple pollen grown under the same experimental conditions (25). The amount of total RNA found in dry apple pollen is very similar to that found by Suss and Tupy (28) in Nicotiana alata pollen, where it appears to remain practically constant during the first 6 h of germination. The progressive decrease in the total amount of RNA found in apple pollen has also been observed in other pollen (33) and was attributed to a progressive release of RNA from pollen tubes into the culture medium.…”