Pollen germination and tube growth: dependent on carbon dioxide and independent of ethylene

Journal Article · Sat Jan 01 00:00:00 EST 1972 · Plant Physiol.; (United States)

DOI:https://doi.org/10.1104/pp.49.6.963· OSTI ID:6474497

Sfakiotakis, E M; Simons, D H; Dilley, D R

The influence of ethylene and CO/sub 2/ on pollen germination and tube growth was investigated employing ventilated culture systems. Ethylene had no effect on pollen germinability or tube growth. Germinating pollen did not produce a detectable amount of ethylene (less than 0.1 nl/g x hr). Supplementing the cultures with CO/sub 2/ caused a marked increase in germination and tube growth. The half-maximal response for germination was less than 0.5%. CO/sub 2/ levels ranging from 1.08 to 2.22% were found in the internal cavity of lily styles. CO/sub 2/ derived from stylar metabolism may, therefore, modulate pollen tube growth thus integrating the events leading to fertilization.

• Research Organization: Michigan State Univ., East Lansing, MI (United States)
• OSTI ID: 6474497
• Journal Information: Plant Physiol.; (United States), Vol. 49
• Country of Publication: United States
• Language: English

Related Subjects

63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
CARBON DIOXIDE
BIOLOGICAL EFFECTS
AIR POLLUTION
FLOWERS
GERMINATION
PLANTS
POLLEN
STIMULATION
CARBON COMPOUNDS
CARBON OXIDES
CHALCOGENIDES
GAMETES
GERM CELLS
OXIDES
OXYGEN COMPOUNDS
POLLUTION
560303* - Chemicals Metabolism & Toxicology- Plants- (-1987)