Gene - Detail

Detail of Gene

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Basic Information
CGSNL Gene Symbol LAX1
Gene Symbol Synonym lax, lax(lx), lx, OsbHLH123, bHLH123, OsLAX1, BOS1, OsBOS1
Gene Name Synonym lax panicle, Transcription factor LAX PANICLE, lax panicle1, basic helix-loop-helix protein 123, LAX PANICLE1, branch one seed 1
Allele lax-1, lax-2, lax-3, lax-4, lax-5, lax1, lax1-1, lax1-3, lax1-6, bos1-1, lax1-7, lax1-c1, lax1-c2
Chromosome No. 1
Explanation lax-1: all lateral spikelets are absent, but fertile terminal spikelets are produced. lax-2: formation of panicle branches and spikekelets is severely reduced. Lateral spilelets are occasionally produced in lax-4 and lax-5. LAX locus is located on chromosome 1 in the region of 82 kb stradding marker C191A. Q7XAQ6. Basic helix-loop-helix (bHLH) transcription factor. AB115668, Axillary meristem formation. orthologue of maize BARRENSTALK1 (BA1). GO:2000904: regulation of starch metabolic process. TO:0000970: panicle density. PO:0030123: panicle inflorescence. TO:0000975: grain width. TO:0003000: stem fresh weight. TO:0003001: stem dry weight. TO:0003021: panicle dry weight. TO:0003020: panicle fresh weight. GO:0090506: axillary shoot meristem initiation. TO:1000024: palea morphology trait.
Trait Class Vegetative organ - Culm
Reproductive organ - Inflorescence
Reproductive organ - panicle
Reproductive organ - Pollination, fertilization, fertility
Character as QTL - Yield and productivity
Reproductive organ - Panicle, Mode of branching
Reproductive organ - Spikelet, flower, glume, awn
cDNA Accession No. AB115668
MSU ID LOC_Os01g61480.1
RAP ID Os01g0831000
Links Oryzabase Chromosome View ( IRGSP 1.0 / Build5 )
RAP-DB ( IRGSP 1.0 / Build5 )
Related IDs List ( IRGSP 1.0 / Build5 )
INSD Accession List
(Test version)
Link to INSD Accession List
Locate(cM) 119.0
Link map Classical linkage map
Zheng Y., Fu D., Yang Z.
Rice (N Y) 2023  16(1)  5
OsDPE2 Regulates Rice Panicle Morphogenesis by Modulating the Content of Starch.
Yu L., Yao M., Mao L., Ma T., Nie Y., Ma H., Shao K., An H., Zhao J.
Plant Biotechnol. J. 2023   
Rice DSP controls stigma, panicle and tiller primordium initiation.
Liu E., Zhu S., Du M., Lyu H., Zeng S., Liu Q., Wu G., Jiang J., Dang X., Dong Z., Hong D.
Gene 2023  883  147635
LAX1, functioning with MADS-box genes, determines normal palea development in rice.
Lv Y., Zhang X., Hu Y., Liu S., Yin Y., Wang X.
Front Plant Sci 2023  14  1162828
BOS1 is a basic helix-loop-helix transcription factor involved in regulating panicle development in rice.
Xu T., Fu D., Xiong X., Zhu J., Feng Z., Liu X., Wu C.
PLoS Genet. 2023  19(4)  e1010698
OsbHLH067, OsbHLH068, and OsbHLH069 redundantly regulate inflorescence axillary meristem formation in rice.
Liu X., Deng X., Kong W., Sun T., Li Y.
Int J Mol Sci 2023  24(2) 
The Pyramiding of Elite Allelic Genes Related to grain number Increases grain number per Panicle Using the Recombinant Lines Derived from <i>Indica-japonica</i> Cross in Rice.
Kellogg E.A.
Plant Cell 2022  34(7)  2518-2533
Genetic control of branching patterns in grass inflorescences.
Wang L., Ming L., Liao K., Xia C., Sun S., Chang Y., Wang H., Fu D., Xu C., Wang Z., Li X., Xie W., Ouyang Y., Zhang Q., Li X., Zhang Q., Xiao J., Zhang Q.
Mol Plant 2021  14(7)  1168-1184
Bract suppression regulated by the miR156/529-SPLs-NL1-PLA1 module is required for the transition from vegetative to reproductive branching in rice.
Abbai R., Singh V.K., Nachimuthu V.V., Sinha P., Selvaraj R., Vipparla A.K., Singh A.K., Singh U.M., Varshney R.K., Kumar A.
Plant Biotechnol. J. 2019   
Haplotype analysis of key genes governing grain yield and quality traits across 3K RG panel reveals scope for the development of tailor-made rice with enhanced genetic gains.
Ni S., Li Z., Ying J., Zhang J., Chen H.
Genes (Basel) 2019  10(3) 
<i>Decreased Spikelets 4</i> Encoding a Novel Tetratricopeptide Repeat Domain-Containing Protein Is Involved in DNA Repair and spikelet number Determination in Rice.
Yang X., Wang J., Dai Z., Zhao X., Miao X., Shi Z.
Rice (N Y) 2019  12(1)  40
miR156f integrates panicle architecture through genetic modulation of branch number and pedicel length pathways.
Li Y., Li X., Fu D., Wu C.
BMC Plant Biol. 2018  18(1)  348
Panicle Morphology Mutant 1 (PMM1) determines the inflorescence architecture of rice by controlling brassinosteroid biosynthesis.
Lu H., Dai Z., Li L., Wang J., Miao X., Shi Z.
Front Plant Sci 2017  8  1538
OsRAMOSA2 Shapes Panicle Architecture through Regulating pedicel length.
Huang X., Yang S., Gong J., Zhao Q., Feng Q., Zhan Q., Zhao Y., Li W., Cheng B., Xia J., Chen N., Huang T., Zhang L., Fan D., Chen J., Zhou C., Lu Y., Weng Q., Han B.
Nature 2016  537(7622)  629-633
Genomic architecture of heterosis for yield traits in rice.
Deshpande G.M., Ramakrishna K., Chongloi G.L., Vijayraghavan U.
J. Exp. Bot. 2015  66(9)  2773-84
Functions for rice RFL in vegetative axillary meristem specification and outgrowth.
Wang L., Sun S., Jin J., Fu D., Yang X., Weng X., Xu C., Li X., Xiao J., Zhang Q.
Proc. Natl. Acad. Sci. U.S.A. 2015  112(50)  15504-9
Coordinated regulation of vegetative and reproductive branching in rice.
Liang W., Shang F., Lin Q., Lou C., Zhang J.
Gene 2014  537(1)  1-5
Tillering and panicle branching genes in rice.
Ikeda M., Miura K., Aya K., Kitano H., Matsuoka M.
Curr. Opin. Plant Biol. 2013  16(2)  213-20
Genes offering the potential for designing yield-related traits in rice.
Gao Z.Y., Zhao S.C., He W.M., Guo L.B., Peng Y.L., Wang J.J., Guo X.S., Zhang X.M., Rao Y.C., Zhang C., Dong G.J., Zheng F.Y., Lu C.X., Hu J., Zhou Q., Liu H.J., Wu H.Y., Xu J., Ni P.X., Zeng D.L., Liu D.H., Tian P., Gong L.H., Ye C., Zhang G.H., Wang J., Tian F.K., Xue D.W., Liao Y., Zhu L., Chen M.S., Li J.Y., Cheng S.H., Zhang G.Y., Wang J., Qian Q.
Proc. Natl. Acad. Sci. U.S.A. 2013  110(35)  14492-7
Dissecting yield-associated loci in super hybrid rice by resequencing recombinant inbred lines and improving parental genome sequences.
Tabuchi,H., Zhang,Y., Hattori,S., Omae,M., Shimizu-Sato,S., Oikawa,T., Qian,Q., Nishimura,M., Kitano,H., Xie,H., Fang,X., Yoshida,H., Kyozuka,J., Chen,F. and Sato,Y.
Plant Cell 2011  23(9)  3276-3287
LAX PANICLE2 of Rice Encodes a Novel Nuclear Protein and Regulates the Formation of Axillary Meristems
Oikawa T,Kyozuka J
Plant Cell 2009  21  1095-108
Two-Step Regulation of LAX PANICLE1 Protein Accumulation in Axillary Meristem Formation in Rice.
Li X, Duan X, Jiang H, Sun Y, Tang Y, Yuan Z, Guo J, Liang W, Chen L, Yin J, Ma H, Wang J, Zhang D.
Plant Physiol. 2006  141(4)  1167-84
Genome-wide analysis of basic/helix-loop-helix transcription factor family in rice and Arabidopsis.
Furutani I, Sukegawa S, Kyozuka J.
Plant J. 2006  46(3)  503-511
Genome-wide analysis of spatial and temporal gene expression in rice panicle development.
Komatsu,K., Maekawa,M., Ujiie,S., Satake,Y., Furutani,I., Okamoto,H., Shimamoto,K. and Kyozuka,J.
Proc. Natl. Acad. Sci. U.S.A. 2003  100(20)  11765-11770
LAX and SPA: Major regulators of shoot branching in rice.
Komatsu, M., Maekawa, M., Shimamoto, K. and Kyozuka, J.
Dev. Biol. 2001  231  364-373
The LAX1 and FRIZZY PANICLE 2 genes determine the inflorescence architecture of rice by controlling rachis-branch and spikelet development.
Yu, Z.H., S.R. McCouch, T. Kinoshita, S. Sato and S.D. Tanksley
Genome 1995  38  566-574.
Association of morphological and RFLP markers in rice (Oryza sativa L. ).
Murai, M. and M. Iizawa
Breeding Science 1994  44  247-255.
Effects of major genes controlling morphology of panicle in rice.
Causse, M.A., T.M. Fulton, Y.G. Cho, S.N. Ahn, J. Chunwongse, K. Wu, J. Xiao, Z. Yu, P.C. Ronald, S.E. Harrington, G. Second, S.R. McCouch and S.D. Tanksley
Genetics 1994  138  1251-1274.
Saturated molecular map of the rice genome based on an interspecific backcross population.
Tanksley, S.D., T.M. Fulton and S.R. McCouch
Genetic Maps, Locus Maps of Complex Genomes, Plants. S.J. O'Brien ed. Cold Spring Harbour Lab. Press. 1993  Book 6  61-79.
Linkage map of rice (Oryza sativa) (2N=24).
Yu, Z.H., T. Kinoshita, S. Sato and S.D. Tanksley
RGN 1992  9  116-118.
Morphological and RFLP markers are associated in rice.
Nadaf, S.K., J.V. Goud and R. Parameswarappa
Indian J. Genet. & Plant Breed. 1992  52(4)  411-415.
Genetic studies in rice (Oryza sativa L.). XVI. Inheritance of panicle type and spreading panicle branch.
Saito, A., M. Yano, N. Kishimoto, M. Nakagahra, A. Yoshimura, K. Saito, S. Kuhara, Y. Ukai, M. Kawase, T. Nagamine, S. Yoshimura, O. Ideta, R. Ohsawa, Y. Hayano, N. Iwata and M. Sugiura
Japan. J. Breed. 1991  41  665-670.
Linkage map of restriction fragment length polymorphism loci in rice.
Yano, M., A. Saito, A. Yoshimura, S. Kuhara, S. Yoshimura, O. Ikeda, N. Kishimoto, K. Saito, R. Ohsawa, K. Kawase, T. Nagamine, T. Ogawa, M. Nakagahra and N. Iwata
Japan. J. Breed. 1990  40(Suppl. 1)  468-469.
Chromosome identification of rice RFLP linkage groups.
Iwata, N., H. Satoh and A. Yoshimura
Bull. Inst. Trop. Agr. Kyushu Univ. 1989  12  1-9.
Linkage studies in rice (Oryza sativa L.). Linkage map of chromosome 3.
Kinoshita, T.
In Biology of Rice. S. Tsunoda and N. Takahashi eds. JSSP/Elsevier, Tokyo. 1984    187-274.
Gene analysis and linkage map.
Yoshimura, A., N. Iwata and T. Omura
Japan. J. Breed. 1982  32(4)  323-332.
Linkage analysis by reciprocal translocation method in rice plants (Oryza sativa L.). III. Marker genes located on chromosomes 2, 3, 4 and 7.
Iwata, N., T. Omura and H. Satoh
J. Fac. Agr. Kyushu Univ. 1978  22  243-251.
Linkage studies in rice (Oryza sativa L.). On some mutants for physiological leaf spots.
Iwata, N., H. Satoh and T. Omura
Japan. J. Breed. 1977  27(Suppl. 1)  250-251.
Linkage studies in rice.Linkage groups for 6 genes newly described.
Iwata, N. and T. Omura
Japan. J. Breed. 1971  21(1)  19-28.
Linkage analysis by reciprocal translocation method in rice plants (Oryza sativa L).I. Linkage groups corresponding to the chromosome 1, 2, 3 and 4.
Nagao, S. and M. Takahashi
J. Fac. Agr. Hokkaido Univ. 1963  53(1)  72-130.
Trial construction of twelve linkage groups in Japanese rice. (Genetical studies on rice plant, XXVII).
TextPresso Search Search textpresso for LAX1 ( Recent references may be retrievable, but without any warranty )
DB Reference
Gramene ID GR:0060493
Gene Ontology auxin mediated signaling pathway( GO:0009734 )
pollen development( GO:0009555 )
maintenance of floral organ identity( GO:0048497 )
floral organ morphogenesis( GO:0048444 )
floral organ development( GO:0048437 )
response to auxin stimulus( GO:0009733 )
response to jasmonic acid stimulus( GO:0009753 )
response to brassinosteroid stimulus( GO:0009741 )
response to abscisic acid stimulus( GO:0009737 )
response to cytokinin stimulus( GO:0009735 )
inflorescence development( GO:0010229 )
sucrose metabolic process( GO:0005985 )
starch metabolic process( GO:0005982 )
regulation of inflorescence meristem growth( GO:0010081 )
DNA binding( GO:0003677 )
transcription( GO:0006350 )
transcription regulator activity( GO:0030528 )
multicellular organismal development( GO:0007275 )
nucleus( GO:0005634 )
regulation of transcription( GO:0045449 )
Trait Ontology spikelet sterility( TO:0000436 )
spikelet weight( TO:0000501 )
panicle type( TO:0000089 )
grain number( TO:0002759 )
panicle number( TO:0000152 )
inflorescence branching( TO:0000050 )
grain weight( TO:0000590 )
spikelet number( TO:0000456 )
filled grain number( TO:0000447 )
spikelet density( TO:0000625 )
inflorescence development trait( TO:0000621 )
yield trait( TO:0000371 )
auxin sensitivity( TO:0000163 )
cytokinin sensitivity( TO:0000167 )
brassinosteroid sensitivity( TO:0002677 )
abscisic acid sensitivity( TO:0000615 )
jasmonic acid sensitivity( TO:0000172 )
spikelet anatomy and morphology trait( TO:0000657 )
primary branch number( TO:0000547 )
secondary branch number( TO:0000557 )
panicle length( TO:0000040 )
grain size( TO:0000397 )
grain length( TO:0000734 )
grain thickness( TO:0000399 )
seed set percent( TO:0000455 )
grain number per plant( TO:0000440 )
1000-seed weight( TO:0000382 )
grain yield per plant( TO:0000449 )
leaf dry weight( TO:0001014 )
plant height( TO:0000207 )
internode length( TO:0000145 )
floral organ development trait( TO:0006022 )
days to heading( TO:0000137 )
spikelet fertility( TO:0000180 )
pollen sterility( TO:0000053 )
sterile lemma length( TO:0000240 )
flower development trait( TO:0000622 )
flower organ size( TO:0002600 )
Plant Ontology inflorescence( PO:0009049 )
spikelet( PO:0009051 )
inflorescence development stage( PO:0001083 )
palea development stage( PO:0001048 )
palea( PO:0009038 )
lemma( PO:0009037 )
sterile lemma( PO:0009040 )
stem internode( PO:0020142 )
stamen( PO:0009029 )
pollen development stage( PO:0001007 )
flower development stage( PO:0007615 )
Related Strains
Stocks for Genes 1
F Lines 11
Phenotype images
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Photo from A. Yoshimura
Last updated
Jan 11, 2024