COBRA encodes a putative GPI-anchored protein, which is polarly localized and necessary for oriented cell expansion in <i>Arabidopsis</i>

Schindelman, Gary; Morikami, Atsushi; Jung, Jee W.; Baskin, Tobias I.; Carpita, Nicholas C.; Derbyshire, Paul; McCann, Maureen C.; Benfey, Philip N.

doi:10.1101/gad.879101

Cited by 342 publications

(349 citation statements)

References 60 publications

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“…So far, several members of the COBRA gene family have been found to be involved in the synthesis of cellulose, which is responsible for the expansion and formation of the cell wall (Schindelman et al 2001;Li et al 2003;Brown et al 2005;Ching et al 2006). In addition, osbc1l4 shows similar mutant phenotype and expression pattern with some cellulose synthase genes (OsCESA4, OsCESA7, and OsCESA9; Tanaka et al 2003).…”

Section: Potential Function Of Osbc1l4mentioning

confidence: 99%

“…It was previously reported that the COBRA gene was an essential player in controlling the orientation of cell expansion by affecting the content and direction of cellulose in Arabidopsis (Benfey et al 1993;Hauser et al 1995;Schindelman et al 2001;Roudier et al 2005). The COBRA gene encodes a glycosylphosphatidylinositol (GPI)-anchored protein that has an N-terminal signal sequence for secretion, a hydrophilic middle, a highly hydrophobic C terminus, a CCVS (Cys-rich) motif, an x-attachment site for GPI processing, two putative N-glycosylation sites, and two predicted cellulose binding sites (Roudier et al 2002).…”

Section: Introductionmentioning

confidence: 99%

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Molecular characterization, expression pattern, and function analysis of the OsBC1L family in rice

et al. 2009

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COBRA-like proteins play important roles in cell expansion and cell wall biosynthesis in Arabidopsis. In rice, a COBRA-like gene, BRITTLE CULM1 (BC1), has been identified as a regulator controlling the culm mechanical strength. Analysis of the rice genome indicated that BC1 belongs to an 11-member multigene family, termed the OsBC1L family in this study. Based on sequence comparisons and phylogenetic analysis, the OsBC1L family comprises two main subgroups. Expression patterns examined by microarray and reverse transcription polymerase chain reaction revealed that OsBC1L genes exhibit universal or specific expression patterns. Through T-DNA or Tos17 insertion mutant lines, the functions of six OsBC1L family members have been examined by investigating the phenotype variations of knockout mutants under normal growth conditions. Results suggest that the OsBC1L genes perform a range of functions and participate in various developmental processes in rice.

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Section: Potential Function Of Osbc1l4mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Molecular characterization, expression pattern, and function analysis of the OsBC1L family in rice

et al. 2009

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“…Although many plant GPI-anchored proteins have been documented (Borner et al, 2002;Borner et al, 2003), very few have been functionally studied. However, functional data have been recently reported for three Arabidopsis GPI-anchored proteins encoded by cobra, sku5 and sos5 (Schindelman et al, 2001;Sedbrook et al, 2002;Shi et al, 2003) and for a rice COBRA-like protein . All these GPI-anchored proteins seem to be involved in the orientation of cell elongation and/or in cell-to-cell adhesion.…”

Section: Research 117mentioning

confidence: 99%

Poplar genes encoding fasciclin‐like arabinogalactan proteins are highly expressed in tension wood

Lafarguette

Leplé²,

Déjardin³

et al. 2004

New Phytologist

183

178

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Summary Fifteen poplar cDNA encoding fasciclin‐like arabinogalactan proteins (PopFLAs) were finely characterized, whereas the presence of arabinogalactan proteins (AGPs) was globally assessed during wood formation. PopFLAs transcript accumulation was analysed through EST distribution in cDNA libraries, semi‐quantitative RT‐PCR, microarray experiment and Northern blot analysis. Similarly, AGPs contents were globally quantified by rocket electrophoresis. AGPs accumulation was further examined by Western blotting and immunocytolocalization. Ten PopFLAs were specifically expressed in tension wood (TW) and not expressed in the cambial zone. Rocket electrophoresis revealed important AGPs accumulation in TW xylem. An anti‐AGPs specific antibody recognized two proteins preferentially present in the cell wall‐bound fraction from TW. Immunocytochemistry revealed a strong labelling close to the inner part of the G‐layer of TW fibres. PopFLAs are expressed in xylem and many are up‐regulated in TW. It is suggested that some PopFLAs accumulating at the inner side of the G‐layer may have a specific function in the building of this layer. PopFLAs expression may therefore be linked to the specific mechanical properties of TW.

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“…The cobra (cob) mutant displays radial expansion in the elongation zone of the root, and this is correlated to a disorganization of microfibrils and a reduction in the level of crystalline cellulose in cells in the root elongation zone. COB encodes a putative glycosylphosphatidylinositol (GPI)-anchored extracellular protein that is localized to the longitudinal sides of root cells in a banding pattern transverse to the longitudinal axis (Schindelman et al, 2001). The sos5 mutant is a conditional mutant that displays arrested root growth and a swollen root phenotype in the presence of salt stress (Shi et al, 2003).…”

Section: Introductionmentioning

confidence: 99%

Two Leucine-Rich Repeat Receptor Kinases Mediate Signaling, Linking Cell Wall Biosynthesis and ACC Synthase in Arabidopsis

et al. 2008

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The plant cell wall is a dynamic structure that changes in response to developmental and environmental cues through poorly understood signaling pathways. We identified two Leu-rich repeat receptor-like kinases in Arabidopsis thaliana that play a role in regulating cell wall function. Mutations in these FEI1 and FEI2 genes (named for the Chinese word for fat) disrupt anisotropic expansion and the synthesis of cell wall polymers and act additively with inhibitors or mutations disrupting cellulose biosynthesis. While FEI1 is an active protein kinase, a kinase-inactive version of FEI1 was able to fully complement the fei1 fei2 mutant. The expansion defect in fei1 fei2 roots was suppressed by inhibition of 1-aminocyclopropane-1-carboxylic acid (ACC) synthase, an enzyme that converts Ado-Met to ACC in ethylene biosynthesis, but not by disruption of the ethylene response pathway. Furthermore, the FEI proteins interact directly with ACC synthase. These results suggest that the FEI proteins define a novel signaling pathway that regulates cell wall function, likely via an ACC-mediated signal.

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COBRA encodes a putative GPI-anchored protein, which is polarly localized and necessary for oriented cell expansion in Arabidopsis

Cited by 342 publications

References 60 publications

Molecular characterization, expression pattern, and function analysis of the OsBC1L family in rice

Molecular characterization, expression pattern, and function analysis of the OsBC1L family in rice

Poplar genes encoding fasciclin‐like arabinogalactan proteins are highly expressed in tension wood

Two Leucine-Rich Repeat Receptor Kinases Mediate Signaling, Linking Cell Wall Biosynthesis and ACC Synthase in Arabidopsis

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