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Response of bZIP10-Overexpressing Brachypodium distachyon to Zinc

ScholarsArchive at Oregon State University

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Title Response of bZIP10-Overexpressing Brachypodium distachyon to Zinc
Names Nguyen, Tinh An (creator)
van Zee, Kari (advisor)
Date Issued 2015-05-20 (iso8601)
Note Honors Bachelor of Science (HBS)
Abstract The micronutrient zinc (Zn) plays a key role in the animal and plant kingdoms. Zndeficient
soils impact plant production and can cause yield reductions of 40% or more.
Zn is also important for both human and plant development as a cofactor for over 200
enzymes. Zn-deficiency symptoms in plants include interveinal chlorosis, abnormally
shaped leaves, stunting and rosetting. Brachypodium distachyon has emerged as an
experimental model for temperate cereal crops and forage grasses. BZIP10 is a protein
with basic domain binding DNA and leucine zipper dimerization motif found to enhance
oxidative stress resistance and may be involved in Zn homeostasis. My objective was to
assess the effect of bZIP10-overexpressing Brachypodium distachyon to varying Zn
concentrations. Wildtype (WT) and 3 transgenic type (TR) seedlings were grown in optimized hydroponics system for 3 weeks prior to initiation of experimental Zn conditions (no Zn, normal Zn, high 15x Zn). Samples were collected for gene expression analysis at 12hours, 24hours and 7 days after treatment. Preliminary results suggest no observable phenotypic differences between the different growing conditions and plant types. Preliminary gene expression analysis of WT and two TR plants show higher expression levels of BdbZIP10, BdIRT-1 and BdZIP4 in TR than WT.
Genre Thesis
Topic Brachypodium distachyon
Identifier http://hdl.handle.net/1957/56038

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