Sinorhizobium meliloti cells: untreated 1021 strain vs. 1021 treated with indole (IND)

ABSTRACT: Nitrogen (N) and phosphorus (P) are the most limiting factors for plant growth. Some microorganisms improve the uptake and availability of N and P, minimizing chemical fertilizer dependence. It has been published that the RD64 strain, a Sinorhizobium meliloti 1021 strain engineered to overproduce indole-3-acetic acid (IAA), showed improved nitrogen fixation ability as compared to the wild type 1021 strain. We present here data showing that RD64 is also highly effective in mobilizing P from insoluble sources such as phosphate rock (PR). Under P-limiting conditions, the higher P-mobilizing activity of RD64, as compared to the 1021 wild type strain, is connected with the up-regulation of genes coding for the high-affinity P transport system, the induction of acid phosphatase activity and the

ORGANISM(S): Sinorhizobium meliloti

SUBMITTER: Carmen Bianco 

PROVIDER: E-GEOD-21742 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress