myo-Inositol Metabolism in Lilium longiflorum Pollen: Uptake and Incorporation of myo-Inositol-2-3H 1

AUTOR(ES)

Chen, Minshen

RESUMO

Germinating Lilium longiflorum pollen absorbs and metabolizes myo-inositol-2-3H (MI-2-3H) with a pronounced lag when label is supplied from the beginning of germination. If MI-2-3H is given after 3 hours of germination, incorporation of labeled metabolic products into pollen tube polysaccharides is constant over a range of 0.56 mm to 2.78 mm MI. When MI-2-3H is supplied as a 0.5-hour pulse 3 hours after germination, the proper precursor-product relationship to tube wall polysaccharides is observed. Replacing 10% of the germination media with sigmatic exudate from a compatible cultivar hastens germination and tube elongation. Enhanced MI metabolism accompanies tube growth in this exudate-enriched media.

Documentos Relacionados

• Effect of a myo-Inositol Antagonist, 2-O, C-Methylene-myo-Inositol, on the Metabolism of myo-Inositol-2-3H and d-Glucose-1-14C in Lilium longiflorum Pollen 1
• Inositol Metabolism in Plants. III. Conversion of Myo-inositol-2-3H to Cell Wall Polysaccharides in Sycamore (Acer pseudoplatanus L.) Cell Culture 1
• Inositol Metabolism in Plants: VII. Distribution and Utilization of Label from Myoinositol-U-14C and -2-3H by Detached Flowers and Pistils of Lilium longiflorum1
• Metabolism of myo-inositol during sporulation of myo-inositol-requiring Saccharomyces cerevisiae.
• Incorporation of Label into Pollen Tube Walls from Myoinositol-labeled Lilium longiflorum Pistils 1