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SUMMARY:Non-redundant Control of Rice Arbuscular Mycorrhizal Symbiosis by 
 two Phosphate Transporters - Dr Shu-Yi Yang
DTSTART:20131025T120000Z
DTEND:20131025T122500Z
UID:TALK48380@talks.cam.ac.uk
CONTACT:Dr Yoan Coudert
DESCRIPTION:Phosphate (Pi) acquisition of crops via arbuscular mycorrhizal
  (AM) symbiosis gains increasing importance due to limited high-grade rock
  Pi reserves and demand for environmentally sustainable agriculture. Mutat
 ions in either of two symbiosis-specific rice Pi transporters\, PT11 and P
 T13\, affected fungal colonization and arbuscule formation demonstrating t
 hat both genes are essential for AM symbiosis. However\, for symbiotic Pi 
 uptake\, only PT11 is necessary and sufficient. The role of PT13 remained 
 unclear. Further investigations showed that the expression of PT13 is up-r
 egulated by an elevated Pi status of rice roots. The PT13 promoter activit
 y in arbusculated or innermost cortex cells suggests a function of PT13 as
 sociated with the high Pi concentration of these cells. Moreover\, PT13 is
  predominantly expressed and required for colonization of AM fungi in the 
 shoot-derived crown roots. These data indicated that PT13 might be respons
 ible for the Pi distribution under high Pi conditions. To further characte
 rize PT13 function we are currently investigating the sub-cellular localiz
 ation and physiological consequences of over-expression of PT13 in Arabido
 psis.
LOCATION:Department of Plant Sciences\, Large Lecture Theatre
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