Difference between revisions of "Os01g0757200"
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===Expression=== | ===Expression=== | ||
| − | + | Genes GA2ox1 to GA2ox9 were differentially expressed in leaves, and their expression was also temporally regulated (Figure 3B). | |
| + | However, mRNAs of GA2ox10 were not detected in any tissue at any growth stage, indicating that GA2ox10 could be a pseudogene or its mRNA level was too low to be detected Based on temporal mRNA accumulation patterns, GA2oxs could be classified into two groups. As can be seen in Figure 3B, for one group excluding GA2ox2 and GA2ox6, accumulation of their mRNAs in leaves was detected prior to the transition from vegetative to reproductive growth phases. By contrast, for another group including GA2ox2 and GA2ox6, their mRNAs accumulated in leaves after the phase transition from vegetative to reproductive growth. GA2ox6 mRNA could also be detected in leaves at early seedling stage and transiently at high level during the active tillering stage. Since expression of most GA2oxs terminated after the active tillering stage, the pattern of tiller growth throughout the rice life cycle was examined. Tiller number increased from 30 to 50 DAI (active tillering), remained constant until 75 DAI, and then increased again until 90 DAI (late tillering)when the experiment was terminated (Figure 3C). Expression of each group of GA2oxs paralleled the active and late tillering stages (cf. Figures 3B with 3C). Except for a slight reduction in the reproductive phase, the expression of GA3ox2, which encodes a GA3ox involved in GA biosynthesis, was not significantly altered in leaves throughout the rice life cycle. | ||
===Evolution=== | ===Evolution=== | ||
Revision as of 08:52, 25 July 2016
Gibberellin 2-oxidases (GA2oxs) regulate plant growth by inactivating endogenous bioactive gibberellins (GAs).
Contents
Annotated Information
Function
The members of the rice (Oryza sativa) GA2ox family are differentially regulated and act in concert or individually to control GA levels during flowering, tillering, and seed germination.
Expression
Genes GA2ox1 to GA2ox9 were differentially expressed in leaves, and their expression was also temporally regulated (Figure 3B). However, mRNAs of GA2ox10 were not detected in any tissue at any growth stage, indicating that GA2ox10 could be a pseudogene or its mRNA level was too low to be detected Based on temporal mRNA accumulation patterns, GA2oxs could be classified into two groups. As can be seen in Figure 3B, for one group excluding GA2ox2 and GA2ox6, accumulation of their mRNAs in leaves was detected prior to the transition from vegetative to reproductive growth phases. By contrast, for another group including GA2ox2 and GA2ox6, their mRNAs accumulated in leaves after the phase transition from vegetative to reproductive growth. GA2ox6 mRNA could also be detected in leaves at early seedling stage and transiently at high level during the active tillering stage. Since expression of most GA2oxs terminated after the active tillering stage, the pattern of tiller growth throughout the rice life cycle was examined. Tiller number increased from 30 to 50 DAI (active tillering), remained constant until 75 DAI, and then increased again until 90 DAI (late tillering)when the experiment was terminated (Figure 3C). Expression of each group of GA2oxs paralleled the active and late tillering stages (cf. Figures 3B with 3C). Except for a slight reduction in the reproductive phase, the expression of GA3ox2, which encodes a GA3ox involved in GA biosynthesis, was not significantly altered in leaves throughout the rice life cycle.
Evolution
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Labs working on this gene
- Institute of Molecular Biology, National Chung-Hsing University, Taichung 402, Taiwan, Republic of China
- Institute of Molecular Biology, Academia Sinica, Taipei 115, Taiwan, Republic of China
- Institute of Plant and Microbial Biology, Academia Sinica, Taipei 115, Taiwan, Republic of China
- Department of Energy Plant Research Laboratory and Department of Plant Biology, Michigan State University,East Lansing, Michigan 48824-1312
References
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