Difference between revisions of "Os09g0469400"

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===Function===
 
===Function===
 
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* '''''ISA3''''' facilitates starch metabolism and affects morphological characteristics of plastids in rice.
  
 
===Mutation===
 
===Mutation===
 
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[[File:.png|right|thumb|400px|'''''' '' <ref name="ref1" />.'']]
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* A transposon-inserted rice mutant of isoamylase3 (isa3) contained an increased amount of starch in the leaf blade at the end of the night, indicating that ISA3 plays a role in the degradation of transitory starch during the night.
  
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* Furthermore, chloroplasts in the leaf blade of isa3 seedlings were large and pleomorphic.
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===Overexpression===
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* Overexpression of '''''ISA3''''' in the sugary1 mutant, which is deficient in ISA1 activity, did not convert water-soluble phytoglycogen to starch granules, indicating that ISA1 and ISA3 are not functionally redundant.
 
===Expression ===
 
===Expression ===
[[File:.png|right|thumb|400px|'''''' '' <ref name="ref1" />.'']]
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* ISA3–green fluorescent protein (GFP) fusion protein expressed under the control of the rice ISA3 promoter was targeted to the amyloplast stroma in the endosperm.
 
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[[File:.png|center|thumb|400px|'''Fig. 3 ISA3–GFP is localized in the amyloplast stroma in the rice endosperm.''' '' <ref name="ref1" />.'']]
 
 
 
===Evolution===
 
===Evolution===
  

Revision as of 07:04, 20 November 2016

The rice gene Os09g0469400 was reported as isa3 in 2011[1] by researchers from Japan.

Annotated Information

Gene Symbol

  • Os09g0469400 <=> OsISA3,ISA3

Function

  • ISA3 facilitates starch metabolism and affects morphological characteristics of plastids in rice.

Mutation

  • A transposon-inserted rice mutant of isoamylase3 (isa3) contained an increased amount of starch in the leaf blade at the end of the night, indicating that ISA3 plays a role in the degradation of transitory starch during the night.
  • Furthermore, chloroplasts in the leaf blade of isa3 seedlings were large and pleomorphic.

Overexpression

  • Overexpression of ISA3 in the sugary1 mutant, which is deficient in ISA1 activity, did not convert water-soluble phytoglycogen to starch granules, indicating that ISA1 and ISA3 are not functionally redundant.

Expression

  • ISA3–green fluorescent protein (GFP) fusion protein expressed under the control of the rice ISA3 promoter was targeted to the amyloplast stroma in the endosperm.
File:.png
Fig. 3 ISA3–GFP is localized in the amyloplast stroma in the rice endosperm. [1].

Evolution

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Labs working on this gene

  • Division of Plant Sciences, National Institute of Agrobiological Sciences, 2-1-2 Kannondai, Tsukuba, 305-8602 Japan
  • Rice Quality Research Team, National Institute of Crop Science, 2-1-18 Kannondai, Tsukuba, 305-8518, Japan
  • Present address: Food Resource Division, National Food Research Institute, 2-1-12 Kannondai, Tsukuba, 305-8642 Japan
  • Present address: National Agricultural Research Center for Hokkaido Region, 1 Hitsujigaoka, Toyohira, Sapporo, 062-8555 Japan

References

  1. 1.0 1.1 1.2 1.3 Yun MS, Umemoto T, Kawagoe Y. Rice debranching enzyme isoamylase3 facilitates starch metabolism and affects plastid morphogenesis. Plant Cell Physiol. 2011 Jun;52(6):1068-82. doi: 10.1093/pcp/pcr058. PubMed PMID: 21551159; PubMed Central PMCID: PMC3110883.


Structured Information