The Yellow Stripe1-Like (YSL) gene family
Cloning of ZmYS1 allowed the surprising but important breakthrough that genes with strong sequence similarity to ZmYS1 are found in non-grass species (monocot, dicot, gymnosperm, and moss species) that neither synthesize nor can use phytosiderophores. All these species do, however, contain a related compound, nicotianamine, an iron chelator that is structurally very similar to phytosiderophores and which contributes to long distance iron transport within the plant. Transport of iron and other highly reactive metal ions must be accomplished using relatively safe, chelated forms. The main focus of my group since 2001 has been to eludidate whether nicotianamine chelates are transported across cell membranes by YS1-like (YSL) proteins.
Nithin Gopalsamy has been awarded the 2011 Ray Ethan Torrey Summer Undergraduate Research Scholarship. Nithin is a Junior who has worked in the Walker Lab since his sophomore year. His project is to study the role of the gene BdNAM-B1 in senescence and nutrient remobilization in Brachypodium distachyon. 4/26/11
Sarah Conte joins the lab. 8/30/2009.
The Brachypodium genome is now available. 5/13/2009.