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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 …
Rna Sequencing Analysis Of The Msl2msl3, Crl, And Ggps1 Mutants Indicates That Diverse Sources Of Plastid Dysfunction Do Not Alter Leaf Morphology Through A Common Signaling Pathway, Darron R. Luesse, Margaret E. Wilson, Elizabeth S. Haswell
Rna Sequencing Analysis Of The Msl2msl3, Crl, And Ggps1 Mutants Indicates That Diverse Sources Of Plastid Dysfunction Do Not Alter Leaf Morphology Through A Common Signaling Pathway, Darron R. Luesse, Margaret E. Wilson, Elizabeth S. Haswell
Biology Faculty Publications & Presentations
Determining whether individual genes function in the same or in different pathways is an important aspect of genetic analysis. As an alternative to the construction of higher-order mutants, we used contemporary expression profiling methods to perform pathway analysis on several Arabidopsis thaliana mutants, including the mscS-like (msl)2msl3 double mutant. MSL2 and MSL3 are implicated in plastid ion homeostasis, and msl2msl3 double mutants exhibit leaves with a lobed periphery, a rumpled surface, and disturbed mesophyll cell organization. Similar developmental phenotypes are also observed in other mutants with defects in a range of other chloroplast or mitochondrial functions, including …