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Nitric oxide is involved in growth regulation and re-orientation of pollen tubes
Prado, AM; Porterfield, DM; Feijo, JANitric oxide (NO) controls diverse functions in many cells and organs of animals. It is also produced in plants and has a variety of effects, but little is known about their underlying mechanisms. In the present study, we have discovered a role for NO in the regulation of pollen tube growth, a fast tip-growing cellular system. Pollen tubes must be precisely oriented inside the anatomically complex female ovary ...
Growing pollen tubes possess a constitutive alkaline band in the clear zone and...
Feijó, JA; Sainhas, J; Hackett, GR; Kunkel, JG; Hepler, PKUsing both the proton selective vibrating electrode to probe the extracellular currents and ratio-metric wide-field fluorescence microscopy with the indicator 2',7'-bis-(2-carboxyethyl)-5-(and-6)-carboxyfluorescein (BCECF)-dextran to image the intracellular pH, we have examined the distribution and activity of protons (Hf) associated with pollen tube growth. The intracellular images reveal that lily pollen tube...
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