Perturbation Analysis of Calcium, Alkalinity and Secretion during Growth of Lily Pollen Tubes.

ABSTRACT: Pollen tubes grow by spatially and temporally regulated expansion of new material secreted into the cell wall at the tip of the tube. A complex web of interactions among cellular components, ions and small molecule provides dynamic control of localized expansion and secretion. Cross-correlation studies on oscillating lily (Lilium formosanum Wallace) pollen tubes showed that an increase in intracellular calcium follows an increase in growth, whereas the increase in the alkaline band and in secretion both anticipate the increase in growth rate. Calcium, as a follower, is unlikely to be a stimulator of growth, whereas the alkaline band, as a leader, may be an activator. To gain further insight herein we reversibly inhibited growth with potassium cyanide (KCN) and followed the re-establ

SUBMITTER: Winship LJ 

PROVIDER: S-EPMC5371762 | biostudies-literature | 2016 Dec

REPOSITORIES: biostudies-literature