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Full-Text Articles in Plant Biology
Har1 And Ljamp1 Dependent Regulation Of Root Architecture In Lotus Japonicus, Chong Sung Kim
Har1 And Ljamp1 Dependent Regulation Of Root Architecture In Lotus Japonicus, Chong Sung Kim
Electronic Thesis and Dissertation Repository
Here, I characterize a root-branching hypermorph of Lotus japonicus, called cluster root-like1 (crl1), which originated from a har1-1 suppressor screen. I have shown that the crl1 root phenotype is determined by two independently segregating recessive mutations, har1-1 and Ljamp1-1, with corresponding HAR1 and LjAMP1 encoding an LRR‑receptor-like kinase and a predicted homologue of the Arabidopsis ALTERED MERISTEM PROGRAM 1 protein, respectively. Unlike har1-1, the Ljamp1 mutation does not affect the symbiotic properties of L. japonicus Gifu but exerts a pleiotropic effect on shoot development. Root architecture, however, is regulated by a synergistic action of HAR1 …
The Effects Of Cytokinin On The Transcriptional Regulation Of Pin Expression In Arabidopsis Thaliana, Elizabeth Burgess
The Effects Of Cytokinin On The Transcriptional Regulation Of Pin Expression In Arabidopsis Thaliana, Elizabeth Burgess
Honors Theses and Capstones
The processes of cell division and differentiation are critical to the development of any multicellular organism. During the formation of plant roots these processes take place at a region of the root tip called the meristem. Cytokinin and auxin are two plant growth hormones that influence this process. Although these two growth hormones are both necessary they also appear in many ways to have an antagonistic relationship. As meristematic root cells undergo differentiation they cease dividing. It has been proposed that the size of the root meristem and thus the overall rate of root growth are determined by the balance …
Identification And Characterization Of The Arabidopsis Homolog Of The Yeast Trex-2 Complex, Gang Tian
Identification And Characterization Of The Arabidopsis Homolog Of The Yeast Trex-2 Complex, Gang Tian
Electronic Thesis and Dissertation Repository
Nuclear pore complexes (NPCs) are vital to nuclear-cytoplasmic communication in eukaryotes. The yeast Thp1-Sac3-Cdc31-Sus1 complex, also known as the TREX-2 complex, is anchored to the NPC via the nucleoporin Nup1, and is essential for mRNA export. In this study, the Arabidopsis homolog of the yeast TREX-2 complex was discovered. Physical and functional evidence support the identification of the Arabidopsis orthologs of the yeast Thp1 and Nup1. Of three Sac3 Arabidopsis homologs, two are putative TREX-2 components. Surprisingly, none are required for mRNA export as is the yeast Sac3. Physical association with TREX-2 was observed for the two Cdc31 homologs, but …