Effect of TaPHR1 Gene on Low-Phosphorus Tolerance Characteristics of Wheat at Seedling Stage
Zhang Chao
Li Xingfeng
Bao Yinguang
Wang Honggang
Tong Yiping
Abstract：In this experiment , improved ion consumption method was adopt to measure the phosphorus absorption kinetics parameters (Cmin,Km,Vmax,α) of two types of wheat materials.One was Shannong 824 with TaPHR1 gene, and the other was Shannong 899 with no.The phosphorus content , dry matter, tiller num-ber and ratio of root to shoot were compared between low (10 μmol/L) and normal (50 μmol/L) phosphorus levels.The results showed that carrying TaPHR1 gene could significantly decrease the C min and Km, but in-crease the Vmax and αvalue.It indicated that TaPHR1 gene could improve the phosphorus uptake dynamic characteristics, promote wheat to absorb more phosphorus under low phosphorus condition , and increase the allocation proportion of stem and leaves to transfer more phosphorus to shoot .So under the low phosphorus condition, TaPHR1 could increase the accumulation of dry matter and tiller number of wheat .
Keywords：WheatTaPHR1 geneAbsorption kineticsAccumulation of dry matterTilleringToler-ance to low phosphorus
Publication Date：2014-10-01
Online Publishing Date：2026-05-22(First online date of this platform, not the publication date of the document)
Pages：6( 68-73 )