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Full-Text Articles in Life Sciences
Plastid Osmotic Stress Influences Cell Differentiation At The Plant Shoot Apex, Margaret E. Wilson, Matthew Mixdorf, R Howard Berg, Elizabeth S. Haswell
Plastid Osmotic Stress Influences Cell Differentiation At The Plant Shoot Apex, Margaret E. Wilson, Matthew Mixdorf, R Howard Berg, Elizabeth S. Haswell
Biology Faculty Publications & Presentations
The balance between proliferation and differentiation in the plant shoot apical meristem is controlled by regulatory loops involving the phytohormone cytokinin and stem cell identity genes. Concurrently, cellular differentiation in the developing shoot is coordinated with the environmental and developmental status of plastids within those cells. Here, we employ an Arabidopsis thaliana mutant exhibiting constitutive plastid osmotic stress to investigate the molecular and genetic pathways connecting plastid osmotic stress with cell differentiation at the shoot apex. msl2 msl3 mutants exhibit dramatically enlarged and deformed plastids in the shoot apical meristem, and develop a mass of callus tissue at the shoot …