Os01g0831000 - Revision history

Xysj2012: /* Structured Information */

2015-05-13T07:37:09Z

‎Structured Information

Lixiaoman13: /* Mutation */

2014-05-17T10:36:56Z

‎Mutation

Lixiaoman13: /* References */

2014-05-17T10:36:19Z

‎References

Lixiaoman13: /* Mutation */

2014-05-17T10:30:58Z

‎Mutation

Lixiaoman13: /* Mutation */

2014-05-17T10:29:40Z

‎Mutation

Lixiaoman13: /* Labs working on this gene */

2014-05-17T10:22:25Z

‎Labs working on this gene

Lixiaoman13: /* Mutation */

2014-05-17T10:20:35Z

‎Mutation

Lixiaoman13 at 10:19, 17 May 2014

2014-05-17T10:19:45Z

Lixiaoman13: /* Function */

2014-05-17T10:18:47Z

‎Function

Lixiaoman13: /* Annotated Information */

2014-05-17T10:16:50Z

‎Annotated Information

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 ==Structured Information==
 [[Category:Genes]]
 [[Category:Japonica mRNA]]

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 ===Mutation===
-In strong mutant alleles of the LAX locus, such as lax-2 and lax-3, the initiation of lateral spikelets is completely suppressed, and panicle branches are also severely reduced. On the other hand, the defects were observed only in the lateral spikelets in lax-1, lax-4, and lax-5, which are weak mutant alleles of LAX(figure 1).Recently, a novel recessive mutant allele of rice LAX1 gene, lax1-6, which showed abnormal panicle phenotypes with few numbers of elongated primary rachis branches. Beside typical lax mutant phenotype, abnormalities of lax1-6 mutant allele were observed with defect lemma and palea primordial in floral organs.
+In strong mutant alleles of the LAX locus, such as lax-2 and lax-3, the initiation of lateral spikelets is completely suppressed, and panicle branches are also severely reduced. On the other hand, the defects were observed only in the lateral spikelets in lax-1, lax-4, and lax-5, which are weak mutant alleles of LAX(figure 1).Recently, a novel recessive mutant allele of rice LAX1 gene, lax1-6, which showed abnormal panicle phenotypes with few numbers of elongated primary rachis branches. Beside typical lax mutant phenotype, abnormalities of lax1-6 mutant allele were observed with defect lemma and palea primordial in floral organs<ref name="ref4" />.
 *An insertion of a retro transposon was detected in the lax-1 allele<ref name="ref2" />.
 *The existence of a long deletion, which contains five predicted genes, PG1 to PG5, was identified in the lax-2 allele<ref name="ref2" />.

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 <ref name="ref2">Komatsu, K., et al. (2003). "LAX and SPA: major regulators of shoot branching in rice." Proc Natl Acad Sci U S A 100(20): 11765-11770.</ref>
 <ref name="ref3">Tabuchi, H., et al. (2011). "LAX PANICLE2 of rice encodes a novel nuclear protein and regulates the formation of axillary meristems." Plant Cell 23(9): 3276-3287.</ref>
 </references>

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 ===Mutation===
-In strong mutant alleles of the LAX locus, such as lax-2 and lax-3, the initiation of lateral spikelets is completely suppressed, and panicle branches are also severely reduced. On the other hand, the defects were observed only in the lateral spikelets in lax-1, lax-4, and lax-5, which are weak mutant alleles of LAX(figure 1).
+In strong mutant alleles of the LAX locus, such as lax-2 and lax-3, the initiation of lateral spikelets is completely suppressed, and panicle branches are also severely reduced. On the other hand, the defects were observed only in the lateral spikelets in lax-1, lax-4, and lax-5, which are weak mutant alleles of LAX(figure 1).Recently, a novel recessive mutant allele of rice LAX1 gene, lax1-6, which showed abnormal panicle phenotypes with few numbers of elongated primary rachis branches. Beside typical lax mutant phenotype, abnormalities of lax1-6 mutant allele were observed with defect lemma and palea primordial in floral organs.
 *An insertion of a retro transposon was detected in the lax-1 allele<ref name="ref2" />.
 *The existence of a long deletion, which contains five predicted genes, PG1 to PG5, was identified in the lax-2 allele<ref name="ref2" />.
@@ Line 11: / Line 11: @@
 *Amino acid substitutions were found in lax-4 and lax-5, R50D or A49T, respectively.
 [[File:Phenotypic analysis of lax mutant..jpg|right|thumb|320px|'''Figure 1.''' ''Phenotypic analysis of lax mutant<ref name="ref2" />'']]
-Recently, a novel recessive mutant allele of rice LAX1 gene, lax1-6, which showed abnormal panicle phenotypes with few numbers of elongated primary rachis branches. Beside typical lax mutant phenotype, abnormalities of lax1-6 mutant allele were observed with defect lemma and palea primordial in floral organs.
+*The lax1-6 mutant allele was caused by a transversion mutation of nucleotide T to G substitution that resulted in an amino acid substitution from serine (S) to alanine (A) at the 117th position from amino terminus of a basic helix-loop-helix protein coded by LAX1 gene.
 ===Expression===

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 *Amino acid substitutions were found in lax-4 and lax-5, R50D or A49T, respectively.
 [[File:Phenotypic analysis of lax mutant..jpg|right|thumb|320px|'''Figure 1.''' ''Phenotypic analysis of lax mutant<ref name="ref2" />'']]
 ===Expression===

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 ==Labs working on this gene==
-.Graduate School of Agriculture and Life Science, University of Tokyo, Yayoi 1-1-1, Bunkyo, Tokyo 113-8657, Japan
+*Graduate School of Agriculture and Life Science, University of Tokyo, Yayoi 1-1-1, Bunkyo, Tokyo 113-8657, Japan
+*Research Institute for Bioresources,Okayama University, Chuou 2-20-1, Kurashiki, Okayama 710-0046, Japan
-.Research Institute for Bioresources,Okayama University, Chuou 2-20-1, Kurashiki, Okayama 710-0046, Japan
+*CREST, Japan Science and Technology Corporation, Honcho 4-1-8,Kawaguchi, Saitama 332-0012, Japan
+*Department of Bio-Science, Nara Institute of Science and Technology, Takayama 8916-5,Ikoma, Nara 630-0101, Japan
-.CREST, Japan Science and Technology Corporation, Honcho 4-1-8,Kawaguchi, Saitama 332-0012, Japan
+*Crop Development Division, National Agriculture and Food Research Organization Agricultural Research Center, Niigata 943-0193, Japan
+*National Center for Plant Gene Research, Key Laboratory of Molecular and Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, People’s Republic of China
-.Department of Bio-Science, Nara Institute of Science and Technology, Takayama 8916-5,Ikoma, Nara 630-0101, Japan
+*Department of Biological Mechanisms and Functions, Graduate School of Bioagricultural Sciences, Nagoya University, Nagoya 464-8601, Japan
+*Photosynthesis and Photobiology Research Unit, National Institute of Agrobiological Sciences, Tsukuba 305-8602, Japan
-.Crop Development Division, National Agriculture and Food Research Organization Agricultural Research Center, Niigata 943-0193, Japan
+*State Key Laboratory of Rice Biology, China National Rice Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou 310006, People’s Republic of China
+*Institute of Radiation Breeding, National Institute of Agrobiological Sciences, Hitachi-ohmiya 319-2293, Japan
-.National Center for Plant Gene Research, Key Laboratory of Molecular and Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, People’s Republic of China
+*Bioscience and Biotechnology Center, Nagoya University, Nagoya 464-8601, Japan
+*Rice Research Division, National Institute of Crop Science, National Agriculture and Food Research Organization, Tsukuba 305-8518, Japan
-.Department of Biological Mechanisms and Functions, Graduate School of Bioagricultural Sciences, Nagoya University, Nagoya 464-8601, Japan
+*Department of Agricultural and Environmental biology, Graduate School of Agricultural and Life Sciences, University of Tokyo, Tokyo 113-8657, Japan
+*Precursory Research for Embryonic Science and Technology, Japan Science and Technology Agency, Kawaguchi 332-0012, Japan
 ==References==

← Older revision		Revision as of 10:19, 17 May 2014
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	Lax panicle mutant in rice is characterized by a few rachis branches and spikelets on the panicle.		Lax panicle mutant in rice is characterized by a few rachis branches and spikelets on the panicle.
	==Annotated Information==		==Annotated Information==

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 ==Annotated Information==
 ===Function===
-LAX PANICLE (LAX) is involved in the formation of all types of axillary meristems throughout the ontogeny of a rice plant, and/or maintenance during rice reproductive development, and functions redundantly with SPA (SMALL PANICLE) in the same genetic pathway. LAX may transiently accumulate in the initiating apical meristem[http://en.wikipedia.org/wiki/Meristem] at the plastochron 4 stage, which strictly regulates mRNA expression and subsequent control of protein targeting[http://en.wikipedia.org/wiki/Protein_targeting]<ref name="ref1" />.  Ectopic LAX expression in rice caused pleiotropic effects, including dwarfing, an altered pattern of stem elongation, darker color, bending of the lamina joint, absence of the midribs of leaves, and severe sterility<ref name="ref2" />.
+LAX PANICLE (LAX) is involved in the formation of all types of axillary meristems throughout the ontogeny of a rice plant, and/or maintenance during rice reproductive development, and functions redundantly with SPA (SMALL PANICLE) in the same genetic pathway. LAX may transiently accumulate in the initiating apical meristem at the plastochron 4 stage, which strictly regulates mRNA expression and subsequent control of protein targeting<ref name="ref1" />.  Ectopic LAX expression in rice caused pleiotropic effects, including dwarfing, an altered pattern of stem elongation, darker color, bending of the lamina joint, absence of the midribs of leaves, and severe sterility<ref name="ref2" />.
 ===Mutation===