The<i>Arabidopsis</i>SOMATIC EMBRYOGENESIS RECEPTOR-LIKE KINASE1 Protein Complex Includes BRASSINOSTEROID-INSENSITIVE1

Karlova, Rumyana; Boeren, Sjef; Russinova, Eugenia; Aker, José; Vervoort, Jacques; Vries, Sven de

doi:10.1105/tpc.105.039412

Cited by 248 publications

(236 citation statements)

References 55 publications

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“…Strong BR-deficient and BR-insensitive mutants are also male sterile, although it remains to be analyzed if they have similar defect in tapetum differentiation. SERK1 was recently shown to be part of a protein complex that includes BRI1 and BAK1 [36], suggesting that SERK1 might play a role in BR signaling. How members of BRI1 and BAK1 families pair up in regulating various developmental processes and whether there exist tissue-specific BR signaling mechanisms are interesting questions to be answered in future studies.…”

Section: Tissue Specific Functions Of the Homologs Of Bri1 And Bak1mentioning

confidence: 99%

The brassinosteroid signal transduction pathway

Wang

Chong

et al. 2006

Cell Res

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Steroids function as signaling molecules in both animals and plants. While animal steroid hormones are perceived by nuclear receptor family of transcription factors, brassinosteroids (BR) in plants are perceived by a cell surface receptor kinase, BRI1. Recent studies have demonstrated that BR binding to the extracellular domain of BRI1 induces kinase activation and dimerization with another receptor kinase, BAK1. Activated BRI1 or BAK1 then regulate, possibly indirectly, the activities of BIN2 kinase and/or BSU1 phosphatase, which directly regulate the phosphorylation status and nuclear accumulation of two homologous transcription factors, BZR1 and BES1. BZR1 and BES1 directly bind to promoters of BR responsive genes to regulate their expression. The BR signaling pathway has become a paradigm for both receptor kinase signaling in plants and steroid signaling by cell surface receptors in general.

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Section: Tissue Specific Functions Of the Homologs Of Bri1 And Bak1mentioning

confidence: 99%

The brassinosteroid signal transduction pathway

Wang

Chong

et al. 2006

Cell Res

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“…therein). Interestingly and perhaps relevant for SE, AGL15 has been identified as a component of a SERK1 protein complex (Karlova et al, 2006), and both SERK1 and AGL15, as well as FUS3, are expressed in response to auxin treatment (Nolan et al, 2003;Gazzarrini et al, 2004;Zhu and Perry, 2005). Also intriguing are recent results that indicate that LEC2 may directly induce expression of AGL15 (Braybrook et al, 2006).…”

mentioning

confidence: 91%

The MADS-Domain Transcriptional Regulator AGAMOUS-LIKE15 Promotes Somatic Embryo Development in Arabidopsis and Soybean

et al. 2008

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The MADS-domain transcriptional regulator AGAMOUS-LIKE15 (AGL15) has been reported to enhance somatic embryo development when constitutively expressed. Here we report that loss-of-function mutants of AGL15, alone or when combined with a loss-of-function mutant of a closely related family member, AGL18, show decreased ability to produce somatic embryos. If constitutive expression of orthologs of AGL15 is able to enhance somatic embryo development in other species, thereby facilitating recovery of transgenic plants, then AGL15 may provide a valuable tool for crop improvement. To test this idea in soybean (Glycine max), a full-length cDNA encoding a putative ortholog of AGL15 was isolated from soybean somatic embryos. Subsequently, the corresponding genomic region of the gene was obtained. This gene, designated GmAGL15, encodes a protein with highest similarity to AGL15 from Arabidopsis (Arabidopsis thaliana) and Brassica napus that accumulates to its highest amount in embryos in these species. Like Arabidopsis and Brassica AGL15, GmAGL15 was preferentially expressed in developing embryos. When ectopically overexpressed the soybean protein was able to enhance somatic embryo development in soybean.

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“…This approach has been successfully used to detect interactions between membrane-bound LRR-RLKs, such as the SERK family members (SERK1, SERK2, BAK1, and BAK1-LIKE1), and BAK1-INTERACTING RECEPTOR-LIKE KINASE1 (Russinova et al, 2004;Albrecht et al, 2005;Karlova et al, 2006;Gao et al, 2009). To facilitate this analysis, constructs to express full-length versions of CST, HAE, and EVR with C-terminal translational fusions to either the N-terminal half of YFP (YFPn) or the C-terminal half of YFP (YFPc) were generated.…”

Section: Cst Interacts With the Hae And Evr Rlks At The Plasma Membranementioning

confidence: 99%

CAST AWAY, a Membrane-Associated Receptor-Like Kinase, Inhibits Organ Abscission in Arabidopsis

et al. 2011

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Receptor-like kinase-mediated cell signaling pathways play fundamental roles in many aspects of plant growth and development. A pair of Arabidopsis (Arabidopsis thaliana) leucine-rich repeat receptor-like kinases (LRR-RLKs), HAESA (HAE) and HAESA-LIKE2 (HSL2), have been shown to activate the cell separation process that leads to organ abscission. Another pair of LRR-RLKs, EVERSHED (EVR) and SOMATIC EMBRYOGENESIS RECEPTOR-LIKE KINASE1, act as inhibitors of abscission, potentially by modulating HAE/HSL2 activity. Cycling of these RLKs to and from the cell surface may be regulated by NEVERSHED (NEV), a membrane trafficking regulator that is essential for organ abscission. We report here the characterization of CAST AWAY (CST), a receptor-like cytoplasmic kinase that acts as a spatial inhibitor of cell separation. Disruption of CST suppresses the abscission defects of nev mutant flowers and restores the discrete identity of the trans-Golgi network in nev abscission zones. After organ shedding, enlarged abscission zones with obscured boundaries are found in nev cst flowers. We show that CST is a dual-specificity kinase in vitro and that myristoylation at its amino terminus promotes association with the plasma membrane. Using the bimolecular fluorescence complementation assay, we have detected interactions of CST with HAE and EVR at the plasma membrane of Arabidopsis protoplasts and hypothesize that CST negatively regulates cell separation signaling directly and indirectly. A model integrating the potential roles of receptor-like kinase signaling and membrane trafficking during organ separation is presented.

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TheArabidopsisSOMATIC EMBRYOGENESIS RECEPTOR-LIKE KINASE1 Protein Complex Includes BRASSINOSTEROID-INSENSITIVE1

Cited by 248 publications

References 55 publications

The brassinosteroid signal transduction pathway

The brassinosteroid signal transduction pathway

The MADS-Domain Transcriptional Regulator AGAMOUS-LIKE15 Promotes Somatic Embryo Development in Arabidopsis and Soybean

CAST AWAY, a Membrane-Associated Receptor-Like Kinase, Inhibits Organ Abscission in Arabidopsis

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