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Identification and Functional Characterization of a Maize Phosphate Transporter Induced by Mycorrhiza Formation.
- Source :
-
Plant & Cell Physiology . Aug2018, Vol. 59 Issue 8, p1683-1694. 12p. - Publication Year :
- 2018
-
Abstract
- 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. [ABSTRACT FROM AUTHOR]
- Subjects :
- *MYCORRHIZAS
*PHOSPHATE industry
*CORN
*FAVA bean
*PHOTOTROPINS
Subjects
Details
- Language :
- English
- ISSN :
- 00320781
- Volume :
- 59
- Issue :
- 8
- Database :
- Academic Search Index
- Journal :
- Plant & Cell Physiology
- Publication Type :
- Academic Journal
- Accession number :
- 131197295
- Full Text :
- https://doi.org/10.1093/pcp/pcy094