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Score: 1.00
Journal: Plant J Citation: V : 64 P : 56-70 Year: 2010
Literature: oryza Field: abstract Doc ID: pub20663087
Matching Sentences:
[ Sen. 6, subscore: 1.00 ]: Membrane trafficking between the plasma membrane ( PM ) and intracellular compartments is an important process that regulates the deposition and metabolism of cell wall polysaccharides . Dynamin-related proteins ( DRPs ) , which function in membrane tubulation and vesiculation are closely associated with cell wall biogenesis . However , the molecular mechanisms by which DRPs participate in cell wall formation are poorly understood . Here , we report the functional characterization of Brittle Culm3 ( BC3 ) , a gene encoding OsDRP2B . Consistent with the expression of BC3 in mechanical it issues , the bc3 mutation reduces mechanical strength , which results from decreased cellulose content and altered secondary wall structure . OsDRP2B , one of three members of the DRP2 subfamily in rice ( Oryza sativa L ) , was identified as an authentic membrane-associated dynamin via in vitro biochemical analyses . Subcellular localization of fluorescence-tagged OsDRP2B and several compartment markers in protoplast cells showed that this protein not only lies at the PM and the clathrin-mediated vesicles , but also is targeted to the trans-Golgi network ( TGN ) . An FM4-64 uptake assay in transgenic plants that express green fluorescent protein-tagged OsDRP2B verified its involvement in an endocytic pathway . BC3 mutation and overexpression altered the abundance of cellulose synthase catalytic subunit 4 ( OsCESA4 ) in the PM and in the endomembrane systems . All of these findings lead us to conclude that OsDRP2B participates in the endocytic pathway , probably as well as in post-Golgi membrane trafficking . Mutation of OsDRP2B disturbs the membrane trafficking that is essential for normal cellulose biosynthesis of the secondary cell wall , thereby leading to inferior mechanical properties in rice plants .
Score: 1.00
Journal: Plant J Citation: V : 64 P : 56-70 Year: 2010
Literature: oryza Field: title Doc ID: pub20663087
Matching Sentences:
[ Sen. 1, subscore: 1.00 ]: The rice dynamin-related protein DRP2B mediates membrane trafficking , and thereby plays a critical role in secondary cell wall cellulose biosynthesis .

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