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CEPCEB Seminar Speaker - Dr. Maria Harrison

Friday, February 2, 2018
  12:10–1 p.m.


Location: Genomics Building
  Parking Information

Category: Seminar

Description:

Dear Faculty, Postdocs, Students, and Friends:

You are cordially invited to a seminar presented by



Maria Harrison




Plant Research
Boyce Thompson Institute


Cornell University


 


Title:


“Reprogramming roots cells for arbuscular mycorrhizal symbiosis”



DATE: Friday, February 2, 2018


 LOCATION: Genomics Auditorium, RM 1102A


Time:12:10pm


 


Please join IIGB for a Coffee Social at 11:30, bring your Mug!


 


Host: David Nelson & Dawn Nagel


 


In natural ecosystems, most vascular flowering plants live in symbiosis with arbuscular mycorrhizal (AM) fungi. These mutually beneficial associations develop in the roots, where the fungus colonizes the cortex to obtain carbon from the plant while providing mineral nutrients to the root. Our research focuses on the molecular events that underlie development of this endosymbiosis with a particular emphasis on the colonized cortical cells where extensive signaling, cellular remodeling and metabolic alterations occur to enable accommodation of the fungal endosymbiont.  Recently, phylogenomics analysis of 52 plant genomes enabled us to identify 138 plant genes that we predict have been conserved for AM symbiosis (1). Initial evidence suggests that some of these genes function together in small modules to modify aspects of root cell biology or metabolism to enable symbiosis.  Examples include new subunits of the exocyst predicted to direct deposition of the periarbuscular membrane, and the redirection of lipid metabolism to provide fatty acids for the fungus. Current electron microscopy and tomography studies contribute new views of the plant-fungal interface and continue to challenge our thinking about AM symbiosis. Recent progress in these areas will be discussed.


(1) Bravo A, York T, Pumplin N, Mueller LA, & Harrison MJ (2016) Genes conserved for arbuscular mycorrhizal symbiosis identified through phylogenomics. Nature Plants 2:1-6.



Open to: General Public
Admission: Free
Sponsor: Institute for Integrative Genome Biology

Contact Information:
Institute for Integrative Genome Biology
(951) 827-7177
genomics@ucr.edu