Unknown,Transcriptomics,Genomics,Proteomics

Dataset Information

Oligouridylate binding protein 1b functions in plant heat stress tolerance

ABSTRACT: To understand affected genes by overexpression of origouridylate binding protein 1b (UBP1b) under heat stress conditions, transcriptional profiling of UBP1box and control plants were analyzed under normal and heat stress (40Â°C) conditions using Arabidopsis custom microarrays. Microarray analysis was conducted using UBP1b-ox and Venus control plants subjected to non-stress and heat-stress condition for 1 h.

ORGANISM(S): Arabidopsis thaliana

SUBMITTER: Akihiro Matsui

PROVIDER: E-GEOD-78713 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Publications

Oligouridylate Binding Protein 1b Plays an Integral Role in Plant Heat Stress Tolerance.

Nguyen Cam Chau CC Nakaminami Kentaro K Matsui Akihiro A Kobayashi Shuhei S Kurihara Yukio Y Toyooka Kiminori K Tanaka Maho M Seki Motoaki M

Frontiers in plant science 20160617

Stress granules (SGs), which are formed in the plant cytoplasm under stress conditions, are transient dynamic sites (particles) for mRNA storage. SGs are actively involved in protecting mRNAs from degradation. Oligouridylate binding protein 1b (UBP1b) is a component of SGs. The formation of microscopically visible cytoplasmic foci, referred to as UBP1b SG, was induced by heat treatment in UBP1b-overexpressing Arabidopsis plants (UBP1b-ox). A detailed understanding of the function of UBP1b, howev ...[more]

PMID: 27379136

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Project description:Within a given vertebrate species, the total number of vertebrae in each anatomical domain is precisely defined and shows little variation among individuals. In contrast, this number can vary tremendously between different species, ranging from as few as six vertebrae in frogs to as many as several hundred in some snakes and fish. Segmental precursors of the vertebrae, called somites are produced sequentially in the embryo from the presomitic mesoderm (PSM), until a final number characteristic of the species, is reached. Here, we show in the chicken embryo that, by controlling the rate of axis elongation, Hox genes control the total number of somites generated by the embryo. We observed that activation of the most posterior Hox genes in somite precursors of the tail bud correlates with an abrupt slowing-down of the speed of axis elongation. We show that progressively more posterior Hox genes, which are collinearly activated in somitic precursors of the epiblast, repress Wnt activity with increasing strength. This leads to a graded repression of the Brachyury/T transcription factor, reducing mesoderm ingression and slowing down the elongation process. Due to the continuation of somite formation, the PSM, which is not fed with sufficient supply of new cells posteriorly, becomes progressively exhausted, ultimately leading to an arrest of segment formation. Our data provide a conceptual framework to explain how the cross-talk between the segmentation clock and the Hox clock accounts for the diversity of vertebral formulae across animal species. Primitive streak aera corresponding to PSM precursors were dissected in Stage 9 somites chicken embryo overexpressing HoxA13 or a control H2B-Venus. The experiment was designed to have biological duplicate in each conditions. The gain-of-function was obtained by electroporating the embryo at Stage 5HH with a vector containing HoxA13 under the CAGGS promoter with an H2B venus reporter. In order to have enough material for the microarray, 7 embryos were pooled in each sample before the hybridization.

Dataset Information

Oligouridylate binding protein 1b functions in plant heat stress tolerance

Publications

Oligouridylate Binding Protein 1b Plays an Integral Role in Plant Heat Stress Tolerance.

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