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Queen's University
 

Biology

trichome Arabidopsis calcium-binding protein (CML42) plays a critical role in regulating the normal branching pattern of trichomes.

The cover photo for the November 13th issue of the Journal of Biological Chemistry features an electron micrograph of a menacing looking trichome (leaf hair) and is reproduced from an article (p 31647-57) by the Snedden lab (students S.Dobney, D.Chiasson, P.Lam) and collaborator Steve Smith (Queen's Biochemistry). Their study investigated the biochemical properties and physiological role of an Arabidopsis calcium-binding protein, CML42, and revealed that CML42 plays a critical role in regulating the normal branching pattern of trichomes. A variety of roles have been associated with trichomes in plants including herbivore deterrence, UV irradiation protection, and reduction in transpiration (water loss) and their unique shape makes them an idea model for studying the mechanisms underlying cell morphology.

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