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Title: A dominant mutation of TWISTED DWARF 1 encoding an alpha-tubulin protein causes severe dwarfism and right helical growth in rice .
Author: Sunohara H Kawai T Shimizu-Sato S Sato Y Sato K Kitano H
Journal: Genes Genet Syst Citation: V : 84 P : 209-18 Year: 2009 Type: MEDLINE
Literature: oryza Field: abstract Doc ID: pub19745569 Accession (PMID): 19745569
Abstract: Dwarfism is a common type of mutation in many plant species . The pathways and factors regulating biosynthesis and signaling of several plant growth regulators have been clarified through analyses of dwarf mutants in rice , Arabidopsis , pea , and maize . However , the genetic mechanisms controlling dwarfism are not well characterized , and the causal genes underlying most dwarf mutants are still uncovered . Here , we report a dominant mutant , Twisted dwarf 1-1 ( Tid1-1 ) , showing dwarfism and twisted growth in rice . Tid1-1 exhibit right helical growth of the leaves and stem and shortening of the roots . They also show an increased number of cells in the shoot apical meristem . Cells in the leaves of Tid1-1 are often ill-shapen , possibly owing to irregular cell division . Cell elongation in roots is suppressed in the elongation zone , and cells in the root apical meristem are enlarged . Map-based cloning of TID1 revealed that it encodes an alpha-tubulin protein comprising microtubules and is an ortholog of Arabidopsis LEFTY genes . Our analysis of the Tid1-1 mutant revealed that the dynamics of microtubules affects not only anisotropic growth in both dicots and monocots , but also meristematic activity and gross plant morphology .
Matching Sentences:
[ Sen. 4, subscore: 1.00 ]: Here , we report a dominant mutant , Twisted dwarf 1-1 ( Tid1-1 ) , showing dwarfism and twisted growth in rice .
[ Sen. 5, subscore: 1.00 ]: Tid1-1 exhibit right helical growth of the leaves and stem and shortening of the roots .
[ Sen. 7, subscore: 1.00 ]: Cells in the leaves of Tid1-1 are often ill-shapen , possibly owing to irregular cell division .
[ Sen. 9, subscore: 1.00 ]: Map-based cloning of TID1 revealed that it encodes an alpha-tubulin protein comprising microtubules and is an ortholog of Arabidopsis LEFTY genes .
[ Sen. 10, subscore: 1.00 ]: Our analysis of the Tid1-1 mutant revealed that the dynamics of microtubules affects not only anisotropic growth in both dicots and monocots , but also meristematic activity and gross plant morphology .
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