What question did this study set out to answer?

To resolve the biochemical function of CLAVATA2 and clarify how it coordinates with other receptor complexes to regulate stem cell identity in the Arabidopsis shoot apical meristem.

July 8, 2010The Plant Journal

CLAVATA2 forms a distinct CLE-binding receptor complex regulating Arabidopsis stem cell specification

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Authors

YGYongfeng GuoTobacco Research Institute LHLinqu HanMichigan State University MHMatthew J. HymesUniversity of Michigan

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Implication

Biochemical and genetic analysis reveals distinct CLAVATA2-CORYNE and CLAVATA1-BAM receptor complexes in Arabidopsis, indicating parallel pathways control stem cell specification.

Key Points

To resolve the biochemical function of CLAVATA2 and clarify how it coordinates with other receptor complexes to regulate stem cell identity in the Arabidopsis shoot apical meristem.
Examined protein-protein interactions and complex formation using transient expression in tobacco and native Arabidopsis meristem tissues.
Quantified ligand-binding kinetics and receptor specificity using CLV3-derived and alternative CLE peptides across CLV1, CLV2, BAM1, and BAM2 receptors.
Evaluated functional redundancy in vivo by overexpressing CLV1 and BAM receptors in Arabidopsis clv2 loss-of-function mutant backgrounds.
Isolated distinct CLV2-CRN heteromultimeric complexes and CLV1-BAM multimeric complexes, detecting only weak interactions between the two assemblies.
Observed that CLV2 binds CLV3-derived CLE peptides independently of CLV1 with binding kinetics comparable to CLV1, while BAM receptors bind a broader repertoire of CLE peptides.
Confirmed that transgenic overexpression of BAM or CLV1 compensates for the developmental defects caused by loss of CLV2 function in vivo.

Cite This Study

Guo et al. (2010) studied this question.

synapsesocial.com/papers/6a8521ce563dbb7b86d97ac8 https://doi.org/10.1111/j.1365-313x.2010.04295.x

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Implication

Biochemical and genetic analysis reveals distinct CLAVATA2-CORYNE and CLAVATA1-BAM receptor complexes in Arabidopsis, indicating parallel pathways control stem cell specification.

CLAVATA2 forms a distinct CLE-binding receptor complex regulating Arabidopsis stem cell specification

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Implication

Key Points

Cite This Study

CLAVATA2 forms a distinct CLE-binding receptor complex regulating Arabidopsis stem cell specification

Discussion

Member takes

Implication

Key Points

Cite This Study

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