A Ds-insertion mutant of OSH6 (Oryza sativa Homeobox 6) exhibits outgrowth of vestigial leaf-like structures, bracts, in rice.

A Ds-insertion mutant of OSH6 (Oryza sativa Homeobox 6) exhibits outgrowth of vestigial leaf-like structures, bracts, in rice. Research Abstract Details 

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A Ds-insertion mutant of OSH6 (Oryza sativa Homeobox 6) exhibits outgrowth of vestigial leaf-like structures, bracts, in rice. Abstract Text:

Sung Han Park,Chul Min Kim,Byoung Il Je,Su Hyun Park,Soon Ju Park,Hai Long Piao,Yuan-Hu Xuan,Mi Sook Choe,Kouji Satoh,Shoshi Kikuchi,Kon Ho Lee,Young Soon Cha,Byung Ohg Ahn,Hyeon So Ji,Doh Won Yun,Myung Chul Lee,Seok-Cheol Suh,Moo Young Eun,Chang-Deok Han,Sung Han Park,Chul Min Kim,Byoung Il Je,Su Hyun Park,Soon Ju Park,Hai Long Piao,Yuan-Hu Xuan,Mi Sook Choe,Kouji Satoh,Shoshi Kikuchi,Kon Ho Lee,Young Soon Cha,Byung Ohg Ahn,Hyeon So Ji,Doh Won Yun,Myung Chul Lee,Seok-Cheol Suh,Moo Young Eun,Chang-Deok Han,

OSH6 (Oryza sativa Homeobox6) is an ortholog of lg3 (Liguleless3) in maize. We generated a novel allele, termed OSH6-Ds, by inserting a defective Ds element into the third exon of OSH6, which resulted in a truncated OSH6 mRNA. The truncated mRNA was expressed ectopically in leaf tissues and encoded the N-terminal region of OSH6, which includes the KNOX1 and partial KNOX2 subdomains. This recessive mutant showed outgrowth of bracts or produced leaves at the basal node of the panicle. These phenotypes distinguished it from the OSH6 transgene whose ectopic expression led to a "blade to sheath transformation" phenotype at the midrib region of leaves, similar to that seen in dominant Lg3 mutants. Expression of a similar truncated OSH6 cDNA from the 35S promoter (35S::DeltaOSH6) confirmed that the ectopic expression of this product was responsible for the aberrant bract development. These data suggest that OSH6-Ds interferes with a developmental mechanism involved in bract differentiation, especially at the basal nodes of panicles.

A Ds-insertion mutant of OSH6 (Oryza sativa Homeobox 6) exhibits outgrowth of vestigial leaf-like structures, bracts, in rice. Publishing Authors By Initials

SH Park,CM Kim,BI Je,SH Park,SJ Park,HL Piao,YH Xuan,MS Choe,K Satoh,S Kikuchi,KH Lee,YS Cha,BO Ahn,HS Ji,DW Yun,MC Lee,SC Suh,MY Eun,CD Han,SH Park,CM Kim,BI Je,SH Park,SJ Park,HL Piao,YH Xuan,MS Choe,K Satoh,S Kikuchi,KH Lee,YS Cha,BO Ahn,HS Ji,DW Yun,MC Lee,SC Suh,MY Eun,CD Han,

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A Ds-insertion mutant of OSH6 (Oryza sativa Homeobox 6) exhibits outgrowth of vestigial leaf-like structures, bracts, in rice. Journal Published:

PUBLICATION TYPE: Research Support, Non-U.S. Gov

Journal: Planta

VOLUME: 227

Page Numbers: 1-12

Journal Abbreviation: Planta

ISSN: 0032-0935

DAY: 13

MONTH: 07

YEAR: 2007

A Ds-insertion mutant of OSH6 (Oryza sativa Homeobox 6) exhibits outgrowth of vestigial leaf-like structures, bracts, in rice. Information

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LANGUAGE: eng

NlmUniqueID: 1250576

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Grant and Affiliation Information for A Ds-insertion mutant of OSH6 (Oryza sativa Homeobox 6) exhibits outgrowth of vestigial leaf-like structures, bracts, in rice.

AFFILIATION: Division of Applied Life Science, Plant Molecular Biology and Biotechnology Research Center, Environmental Biotechnology National Core Research Center, Gyeongsang National University, Jinju, South Korea.

Country: Germany

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