Cell Wall Assembly and Intracellular Trafficking in Plant Cells Are Directly Affected by Changes in the Magnitude of Gravitational Acceleration
Figure 2
Response of Camellia pollen tube morphology to altered gravitational acceleration.
(A) Germination percentage of pollen grains. Pollen grains were considered germinated when the length of the pollen tube exceeded the diameter of the pollen grain. (B) Pollen tube diameter was measured at approximately 20 µm from the pole. (C) Pollen tube elongation rate as calculated from pollen tube length after 2 to 3 hours following imbibition. (D) Rate of surface expansion as calculated from pollen tube diameter and elongation rate. Asterisks (*) indicate statistically significant difference between samples grown in altered gravity conditions compared to the samples grown at 1 g (Two way t-test yielded p<0.001).