Os02g0811000 - Revision history

Chenxi Sang at 13:00, 28 October 2016

2016-10-28T13:00:41Z

Xysj2012: /* Structured Information */

2015-05-14T06:02:55Z

‎Structured Information

Guocen: /* Primers */

2014-05-27T02:58:15Z

‎Primers

Guocen: /* Function */

2014-05-27T02:55:47Z

‎Function

Guocen: /* Mutations */

2014-05-26T13:05:26Z

‎Mutations

Guocen: /* Expression */

2014-05-26T12:59:50Z

‎Expression

Guocen: /* Expression */

2014-05-26T12:59:24Z

‎Expression

Guocen: /* Expression */

2014-05-26T12:59:04Z

‎Expression

Guocen: /* Expression */

2014-05-26T12:57:13Z

‎Expression

Guocen: /* Expression */

2014-05-26T12:54:51Z

‎Expression

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-Please input one-sentence summary here.
+The rice '''''Os02g0811000''''' was reported as '''''BLS1''''' in 2012 <ref name="ref1" /> by researchers from China.
 ==Annotated Information==
-Os02g0811000(LOC_Os02g56610) was first identified as the ''TH1'' gene which encoded an unknown functional protein contained 248 amino acids and a DUF640 domain by Li et al., 2012. Several studies suggest that TH1 was an important gene controlling the lemma and palea development in rice. The later researchers by Ma et al., 2013 and Yan et al., 2013 also found the mutants of Os02g0811000 (LOC_Os02g56610) gene, and named them as ''BLS1''( ''beak like spikelet1'') and ''BSG1''(''beak-shaped grain1'').
+[[File:185-Os02g0811000.png|right|thumb|427px|'''Figure 8.''' ''Subcellular localization of BLS1.<ref name="ref1" />.'']]
 ===Function===
-The ''TH1'' gene controls the grain shape and development of lemma and palea through regulating the cell division and extension. Loss-function or down regulation of the ''TH1'' gene caused tortuous and slender lemma/palea and the decrease of grain weight[1].
+* '''''BLS1''''' is required for lateral development of the lemma and palea in Rice, and does not function at stages of floral-organ initiation and patterning
+===Phenotypic analysis===
-''BLS1'' is required for lateral development of the lemma and palea and does not function at stages of floral-organ initiation and patterning. The ''bls1'' mutants display altered shapes of lemmas and paleas and show abnormal lateral development of lemma and palea. [2]
+* In '''''bls1''''' mutant, floral-organ identity and floral-organ patterning are normal, and the defects occur at the stage of the lemma and palea expansion, whereas the other aspects of floral architecture and form are not affected.
 ===Expression===
-RT-PCR analysis and GUS staining showed that the transcripts of ''TH1'' mainly accumulated in young inflorescence, lemma and palea of spikelet [1].
+* '''''BLS1''''' is expressed strongly in young inflorescence, specifically the young lemmas and paleas of spikelets.
-[[File:GCFig.1.jpg]]
+===Subcellular localization===
+* Subcellular localization analysis showed that '''''BLS1''''' is localized in the nucleus.
 == Labs working on this gene ==
+* National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Science,  Chinese Academy of Agricultural Sciences, Beijing 100081, China.
-. State Key Laboratory of Plant Physiology and Biochemistry, Department of Plant Genetics and Breeding, China Agricultural University, Beijing 100193, China.
+* National Key Laboratory for Crop Genetics and Germplasm Enhancement, Jiangsu Plant Gene Engineering Research Center, Nanjing Agricultural University, Nanjing 210095, China
 == References ==
-[1] Xiaojiao Li,Lianjun Sun;Lubin Tan,Fengxia Liu,Zuofeng Zhu,Yongcai Fu,Xianyou Sun,Xuewen Sun,Daoxin Xie,Chuanqing Sun,2012. ''TH1'', a DUF640 domain-like gene controls lemma and palea development in rice. Plant Molecular Biology, 78(4-5): 351-359.
+<references>
-[2]  Xiaoding Ma,Zhijun Cheng,Fuqing Wu,Mingna Jin,Liguo Zhang,Feng Zhou,Jiulin Wang,Kunneng Zhou,Jian Ma,Qibing Lin,Cailin Lei,Jianmin Wan,2013. ''BEAK LIKE SPIKELET1'' is Required for Lateral Development of Lemma and Palea in Rice. Plant Molecular Biology Reporter, 31(1): 98-108.
+* <ref name="ref1">
-[3]  Yan D W, Zhou Y, Ye S H, et al. , 2013. ''BEAK-SHAPED GRAIN1/TRIANGULAR HULL 1'', a DUF640 gene, is associated with grain shape, size and weight in rice. Sci China Life Sci, 56: 275–283.
+Ma, Xiaoding, et al. "BEAK LIKE SPIKELET1 is required for lateral development of lemma and palea in rice." Plant Molecular Biology Reporter 31.1 (2013): 98-108.
 ==Structured Information==

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

← Older revision		Revision as of 02:58, 27 May 2014
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	Fig. 10 Map-based cloning of ''BSG1''(Yan et al., 2013).		Fig. 10 Map-based cloning of ''BSG1''(Yan et al., 2013).
		+
		+
		+	== phylogenetic analyses ==
		+
		+	Bioinformatic analysis revealed that ''BLS1 '' encodes a protein with a conserved domain of unknown function. In the rice database, this domain is called ALOG. Ma et al. construct a phylogenetic tree (Fig. 11) which shows the relationship between BLS1 and other proteins with ALOG domains. Among the 23 ''BLS1 '' homologs, only three genes have been reported so far: ''LIGHTDEPENDENT SHORT HYPOCOTYLS1 (LSH1)/ ORGAN BOUNDARY1 (OBO2), LSH3/ OBO1 '', and ''ELONGATED EMPTY GLUME (ELE) /G1 ''. And the phylogenetic analysis showed that the ''BLS1 '' gene is in a distinct clade, including four putative homologs, Grmzm2g168371, Sb04g036620, Bradi3g54800, and Grmzm2g027302 from the genomes of maize, sorghum and ''Brachypodium '', which shared around 80 % amino acid sequence identity with the ''BLS1 '' protein[2].
		+
		+	[[File: GCFig.11.jpg]]
		+
		+	Fig. 11 Phylogenetic tree of proteins containing the ALOG domain.
		+
		+
		+
		+

	== Primers ==		== Primers ==

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 Os02g0811000(LOC_Os02g56610) was first identified as the ''TH1'' gene which encoded an unknown functional protein contained 248 amino acids and a DUF640 domain by Li et al., 2012. Several studies suggest that TH1 was an important gene controlling the lemma and palea development in rice. The later researchers by Ma et al., 2013 and Yan et al., 2013 also found the mutants of Os02g0811000 (LOC_Os02g56610) gene, and named them as ''BLS1''( ''beak like spikelet1'') and ''BSG1''(''beak-shaped grain1'').
 ===Function===
 The ''TH1'' gene controls the grain shape and development of lemma and palea through regulating the cell division and extension. Loss-function or down regulation of the ''TH1'' gene caused tortuous and slender lemma/palea and the decrease of grain weight[1].
 ''BSG1'' determines grain shape and size probably by modifying cell division and expansion in the grain hull. Map-based cloning revealed that ''BSG1'' encoded a DUF640 domain protein, ''TRIANGULAR HULL 1'', of unknown function. The BSG1 mutation affected the expression of genes potentially involved in the cell cycle and ''GW2'', an important regulator of grain size in rice[3].

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 The ''th1-1'' mutant exhibited obviously triangular hull with tortuous and slender lemma/palea. Observation of the lemma and palea of ''th1-1'' using scanning electron microscopy (SEM) revealed that the th1-1 had narrower lemma and palea. Just before heading, we viewed the epidermis of lemma and palea using SEM, and found that the bulges in the ''th1-1'' mutant were more than that of wild type. Further examination on transverse sections of lemma and palea showed that the number of fibrous sclerenchyma cells was increased in the ''th1-1'' mutant [1].
 Using a map-based cloning strategy, the ''TH1'' gene was narrowed down to a 60-kb region on the long arm of chromosome 2. Sequence verification revealed that the ''th1-1'' mutant harbored 1-bp deletion in exon 2 of LOC_Os02g56610 which resulted in a frame-shift mutation [1].
 In ''bls1'' mutant, floral-organ identity and floral-organ patterningare normal, and the defects occur at the stage of the lemma and palea expansion, whereas the other aspects of floral architecture and form are not affected[2].
-The ''bls1'' mutant was controlled by a single recessive gene locus in a region of about  65 kb region between markers M14 and M10 on chromosome 2[2].
+[[File:GCFig.7.jpg]]
 The ''BSG1'' gene Produced beak-shaped grains of decreased width, thickness and weight with a loosely interlocked lemma and palea that were unable toclose tightly. Starch granules were also irregularly packaged in the ''bsg1'' grains. Consistent with the lemma and palea shapes, the outer parenchyma cell layers of these ''bsg1'' tissues developed fewer cells with decreased size[3].
 The deletion in ''bsg1-1'' and amino acid transition in ''bsg1-2'' both occurred in the DUF640 coding sequence. A 5-bp deletion in the genomic sequence of the predicted gene Os02g0811000 was identified in ''bsg1-1''. In ''bsg1-2'', a transition from A to T in the exon of the same Os02g0811000 gene, resulting in a change of amino acid from Asp to Val[3].
 == Primers ==

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 [[File:GCFig.2.jpg]]
-Fig. 2 Expression pattern of BLS1(Ma et al., 2013).
+Fig. 2 Expression pattern of ''BLS1''(Ma et al., 2013).
 [[File:GCFig.3.jpg]]
-Fig. 3 Subcellular localization of BLS1(Ma et al., 2013).
+Fig. 3 Subcellular localization of ''BLS1''(Ma et al., 2013).
 Quantitative PCR and GUS fusion reporter assays showed that ''BSG1'' was expressed mainly in the young panicle and elongating stem[3].
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 [[File:GCFig.4.jpg]]
-Fig.4  Expression pattern of BSG1(Yan et al., 2013).
+Fig.4  Expression pattern of ''BSG1''(Yan et al., 2013).
 ===Mutations===

← Older revision		Revision as of 12:59, 26 May 2014
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	''BLS1'' is expressed strongly in young inflorescence, specifically the young lemmas and paleas of spikelets. Subcellular localization analysis showed that ''BLS1'' is localized in the nucleus[2].		''BLS1'' is expressed strongly in young inflorescence, specifically the young lemmas and paleas of spikelets. Subcellular localization analysis showed that ''BLS1'' is localized in the nucleus[2].
		+
	[[File:GCFig.2.jpg]]		[[File:GCFig.2.jpg]]