Ammonium accumulation in relation to growth of rice cell suspension under phosphate deprivation
1997
Shih, C.-Y. | Kao, C.H. (National Taiwan Univ., Taipai (China). Dept. of Agronomy)
Suspension-cultured rice cells growth was markedly inhibited and ammonium content increased when rice cells were deprived of phosphate. When rice cells were cultured at increasing concentrations of ammonium chloride, ammonium content increased, however, no significant inhibition of cell growth was observed. Addition of D-arginine, an inhibitor of putrescine biosynthesis, resulted in a complete recovery of growth in rice cells under phosphate deprivation, but did not decrease the content of ammonium. Our results indicate that the growth inhibition induced by phosphate deprivation is not associated with ammonium accumulation.
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