Botany and Plant Pathology Seminar Series
Speaker: Ms. Nimnara Yookongkaew - Department of Botany and Plant Pathology - Purdue University
Topic: Analysis of metallothionein (MT)-deficient Arabidopsis plants demonstrates MTs are involved in Cu homeostasis
When: Wednesday, March 20, 2013 at 3:30 pm in WSLR 116

Copper (Cu) is an essential element required for plant growth and development. Metallothioneins (MTs) are small cysteine-rich proteins that can bind Cu but the functions of MTs in plants are largely unknown. My research has focused on four MT genes that are expressed in vegetative tissues of Arabidopsis: MT1a, MT2a, MT2b and MT3. A quad MT-deficient mutant (mt1a/mt2a/mt2b/mt3) exhibited three striking phonotypes, all related to Cu homeostasis.
·       High accumulation of Cu in leaves
·       Low concentration of Cu in seeds
·       Sensitivity to Cu deficient conditions
Results of further experiments to understand how MTs function in Cu homeostasis will be discussed.

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