Difference between revisions of "Os01g0192000"

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(Wild Type & Mutants)
(Expression)
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===Expression===
 
===Expression===
Please input expression information here.
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Real-time PCR analysis was performed to examine the expression profile of '''''OsDOS'''''.
  
 
===Evolution===
 
===Evolution===

Revision as of 09:08, 30 July 2015

The rice Os01g0192000 is located at rice chromosome 1, which is involved in delaying leaf senescence in rice. It was reported as OsDOS by Chinese plant molecular biologists in 2006.

Annotated Information

Function

  • Leaf senescence is a developmentally programmed degeneration process that constitutes the final step of leaf development and is controlled by multiple developmental and environmental signals. Research shows that OsDOS acts as a novel negative regulator for leaf senescence by integrating developmental cues to senescence signaling cascades including the JA pathway. Scientists propose that OsDOS possibly plays a role at posttranscriptional level in delaying leaf senescence in rice. And the potential targets of OsDOS might be key positive elements that are required to promote the leaf senescence program.

Wild Type & Mutants

  • RNAi interference of the OsDOS. The RNAi T 1 lines appeared normal during the vegetative growth. However, beginning at the time of late booting stage, slight but consistent leaf yellowing was clearly observed in the RNAi lines and then an accelerated leaf senescence occurred compared with that in the wild-type plants. At the grainfilling stage, striking leaf yellowing appeared in the whole plant, except the flag leaf showing a slightly less yellowing, and the senescence symptom was correlated with the reduction of the expression level of OsDOS. Compared with the OsDOS RNAi lines, the wild-type plants stayed much more green.
  • Overexpression of the OsDOS. The OsDOS OX lines showed a delay in growth, shorter stature, abnormally developed panicle, deferred heading, and severe sterility. The florets of the OsDOS OX lines was found failed to open or scarcely opened after heading. Further phenotypic analysis showed that defects in anther dehiscence and pollen viability may be responsible for the severe sterility of the OX lines. Together, these results indicated that the ectopic overexpression of OsDOS has a pleiotropic impact on rice development.

Expression

Real-time PCR analysis was performed to examine the expression profile of OsDOS.

Evolution

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Labs working on this gene

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References

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Structured Information