Abstract
Spirodela punctata was cultivated on phosphate-deficient medium (−Pi) with racemic 1-amino-2-phenylethylphosphonic acid (PheP) as a source of Pi. The growth of duckweed was inversely correlated with PheP concentration. The growth of plants on medium −Pi with 0.1 M PheP was accelerated whereas with 0.001 mM PheP was slower than in −Pi control. PheP at low concentrations decreased loss of chlorophyll in comparison with −Pi plants. Content of anthocyanins decreased but activity of the extractable constitutive phosphatases of pH 6.0 and pH 7.5 increased along with increasing concentration of PheP in the medium. We suggest that S. punctata does not break P-C bonds but probably PheP interrupts processes involved in the regulation of Pi-starvation response.
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Janas, K., Romanowska-Duda, Z. Does Spirodela punctata break P-C bonds?. Biologia Plantarum 45, 613–615 (2002). https://doi.org/10.1023/A:1022347927942
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DOI: https://doi.org/10.1023/A:1022347927942