Affiliation:
1. Department of Agronomy, National Taiwan University, Taipei, Taiwan, Republic of China
Abstract
Abstract
The effects of phosphate deprivation on the growth and polyamine levels of suspension-cultured rice (Oryza sativa) cells were investigated. When rice suspension cells were deprived of phosphate, cell growth was markedly inhibited. Phosphate deprivation resulted in a higher putrescine level and lower spermidine and spermine levels in rice suspension cells. The growth of rice cells cultured in the absence of phosphate did not recover as a result of spermidine and spermine addition. D-Arginine and α--methylornithine, inhibitors of putrescine biosynthesis, caused a reduced level of putrescine in rice suspension cells cultured under phosphate deprivation. The growth of rice cells cultured in the absence of phosphate was completely recovered after the addition of D-arginine but not α--methylornithine. Our results indicate that putrescine accumulation is a factor causing growth inhibition of suspension-cultured rice cells under phosphate deprivation.
Publisher
Oxford University Press (OUP)
Subject
Plant Science,Genetics,Physiology
Cited by
20 articles.
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