Record ID No. |
5589 |
Author(s) |
Liu F.*, Xu Y., Han G., Wang W., Li X., and Cheng B. , 2018 |
Affiliation |
*National Engineering Laboratory of Crop Stress Resistance, Anhui Agricultural University, No. 130, Changjiang West Road, Hefei, China. |
Title |
Identification and Functional Characterization of a Maize phosphate transporter Induced by Mycorrhiza Formation. |
Source. Vol.(no):Page |
Plant and Cell Physiology. 59(8): 1683-1694. |
Categories |
|
Subjects |
Genetics |
Host |
Maize |
Organism |
NA |
Country |
China |
Abstracts |
Phosphorus (P) is an essential macronutrient for plant life, although it is frequently not readily available to crops. Arbuscular mycorrhiza fungi (AMF) can improve plant P levels by inducing the expression of some phosphate (Pi) transporters. Symbiotic Pi uptake by Pi transporters is crucial for AMF colonization and arbuscule dynamics. However, the functions of mycorrhiza-inducible maize Pi transporters are largely unclear. We focused on the interaction between the Pi concentration and AMF colonization in maize, and detecting the induction of a Pi transporter. We investigated AMF colonization and arbuscular development in maize under high and low Pi environments. Low Pi increased AMF colonization and promoted arbuscular development. Further measurement of P concentration showed that AMF significantly improved the maize P status under low Pi conditions. Here, we identified the Pi transporter gene, ZmPt9, which was induced by mycorrhiza formation. In addition, ZmPt9-overexpressing roots were difficult to colonize by AMF. Pi response analysis showed that ZmPt9 complements a yeast mutant defective in Pi transporter activity and improves the P concentration in rice. Together, these data indicated that ZmPt9 is a mycorrhiza-inducible Pi transporter gene involved in Pi uptake. |