Effect of phosphorus deficiency on acid phosphatase and phytase activities in common bean (Phaseolus vulgaris, L.) under symbiotic nitrogen fixation

摘要: Changes in growth, symbiotic nitrogen fixation (SNF), acid phosphatase (ACP), and phytase activities to phosphorus availability (15 60 μmol KH2PO4 plant−1 week−1) were compared two recombinant lines (115 147) of common bean. Plant nodulation SNF genotype P level-dependent. 147 was more affected by shortage P) than 115. Four ACP types revealed the nodules both lines, ACP1 exhibiting a higher specific activity under as treatment, especially A single for significantly enhanced deficiency. Three found roots leaves, showing increasing deficiency, Regardless supply, leaf that lines. Interestingly, use efficiency N2 correlated nodule The relatively better performance 115 deficiency could be partly ascribed ability maintain activity. This enzyme might involved remobilization plant Pi its utilization SNF.