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article

Flourishing in water: the early evolution and diversification of plant receptor‐like kinases

Zhen Gong, Guan‐Zhu Han

Receptor‐like kinases (RLKs) play significant roles in mediating innate immunity and development of plants. The evolution of plant RLKs has been characterized by extensive variation in copy numbers and domain configurations. However, much remains unknown about the origin, evolution, and early diversification of plant RLKs. Here, we perform phylogenomic analyses of RLKs across plants (Archaeplastida),...

article

Genome‐wide and structural analyses of pseudokinases encoded in the genome of Arabidopsis thaliana provide functional insights

Anindita Paul, Narayanaswamy Srinivasan

Proteins: Structure, Function, and Bioinformatics > 88 > 12 > 1620 - 1638

Protein Kinase‐Like Non‐Kinases (PKLNKs), commonly known as “pseudokinases”, are homologous to eukaryotic Ser/Thr/Tyr protein kinases (PKs) but lack the crucial aspartate residue in the catalytic loop, indispensable for phosphotransferase activity. Therefore, they are predicted to be “catalytically inactive” enzyme homologs. Analysis of protein‐kinase like sequences from Arabidopsis thaliana led to...

article

Stress‐adaptive gene discovery by exploiting collective decision‐making of decentralized plant response systems

Stephen Chivasa, Heather Louise Goodman

New Phytologist > 225 > 6 > 2307 - 2313

Despite having a network of cytoplasmic interconnections (plasmodesmata) facilitating rapid exchange of metabolites and signal molecules, plant cells use the extracellular matrix as an alternative route for cell–cell communication. The need for extracellular signalling in plasmodesmata‐networked tissues is baffling. A hypothesis is proposed that this phenomenon defines the plant extracellular matrix...

article

Receptor‐Like Kinase Phosphorylation of Arabidopsis Heterotrimeric G‐Protein Gα ‐Subunit AtGPA1

Haiyan Jia, Gaoyuan Song, Emily G. Werth, Justin W. Walley, more

PROTEOMICS > 19 > 24 > n/a - n/a

As molecular on–off switches, heterotrimeric G protein complexes, comprised of a Gα subunit and an obligate Gβγ dimer, transmit extracellular signals received by G protein–coupled receptors (GPCRs) to cytoplasmic targets that respond to biotic and abiotic stimuli. Signal transduction is modulated by phosphorylation of GPCRs and G protein complexes. In Arabidopsis thaliana, the Gα subunit AtGPA1 is...

article

The Arabidopsis thaliana lectin receptor kinase LecRK‐I.9 is required for full resistance to Pseudomonas syringae and affects jasmonate signalling

Claudine Balagué, Anne Gouget, Olivier Bouchez, Camille Souriac, more

Molecular Plant Pathology > 18 > 7 > 937 - 948

On microbial attack, plants can detect invaders and activate plant innate immunity. For the detection of pathogen molecules or cell wall damage, plants employ receptors that trigger the activation of defence responses. Cell surface proteins that belong to large families of lectin receptor kinases are candidates to function as immune receptors. Here, the function of LecRK‐I.9 (At5g60300), a legume‐type...

article

Corrigendum

New Phytologist > 213 > 3 > 1555 - 1555

article

Alternative splicing of the receptor‐like kinase Nt‐Sd‐RLK in tobacco cells responding to lipopolysaccharides: suggestive of a role in pathogen surveillance and perception?

Natasha M. Sanabria, Ian A. Dubery

FEBS Letters > 590 > 20 > 3628 - 3638

Nt‐Sd‐RLK encodes an S‐domain lectin receptor‐like kinase that is induced in response to microbe‐associated molecular pattern molecules (MAMPs) such as lipopolysaccharide (LPS). In this study, we investigated the alternative splicing of Nt‐Sd‐RLK in response to LPS stimulation. Our data indicate that in nonstimulated cells, a shorter transcript of Nt‐Sd‐RLK is generated and that in response to LPS,...

article

MOL1 is required for cambium homeostasis in Arabidopsis

Nial Rau Gursanscky, Virginie Jouannet, Karin Grünwald, Pablo Sanchez, more

The Plant Journal > 86 > 3 > 210 - 220

Plants maintain pools of pluripotent stem cells which allow them to constantly produce new tissues and organs. Stem cell homeostasis in shoot and root tips depends on negative regulation by ligand–receptor pairs of the CLE peptide and leucine‐rich repeat receptor‐like kinase (LRR‐RLK) families. However, regulation of the cambium, the stem cell niche required for lateral growth of shoots and roots,...

article

Crystallization and preliminary X‐ray crystallographic analysis of the extracellular domain of LePRK2 from Lycopersicon esculentum

Anbi Xu, Laiqiang Huang

Acta Crystallographica Section F > 70 > 2 > 240 - 243

The tomato (Lycopersicon esculentum) pollen‐specific receptor kinase 2 (LePRK2) is a member of the large receptor‐like kinase (RLK) family and is expressed specifically in mature pollen and pollen tubes in L. esculentum. Like other RLKs, LePRK2 contains a characteristic N‐terminal leucine‐rich repeat (LRR) extracellular domain, the primary function of which is in protein–protein interactions. The...

article

Cloning, expression, purification, crystallization and preliminary X‐ray diffraction analysis of the LRR domain of the LePRK1 receptor‐like kinase from tomato

Anbi Xu, Laiqiang Huang

Acta Crystallographica Section F > 70 > 2 > 236 - 239

LePRK1 is a receptor‐like kinase involved in successful fertilization in Lycopersicon esculentum (tomato). Importantly, the extracellular leucine‐rich repeat (LRR) domain of LePRK1 mediates transmembrane signal transduction for pollen‐tube growth and pollen germination. In this study, the N‐terminal extracellular LRR domain of L. esculentum‐derived LePRK1 was purified using an insect‐cell secretion...

article

Notes from the Underground: Receptor‐Like Kinases in Arabidopsis Root Development

Michael P. Wierzba, Frans E. Tax

Journal of Integrative Plant Biology > 55 > 12 > 1224 - 1237

During plant development, the frequency and context of cell division must be controlled, and cells must differentiate properly to perform their mature functions. In addition, stem cell niches need to be maintained as a reservoir for new cells. All of these processes require intercellular signaling, whether it is a cell relaying its position to other cells, or more mature cells signaling to the stem...

article

Crystallization and preliminary crystallographic analysis of Arabidopsis thaliana BRI1‐associated kinase 1 (BAK1) cytoplasmic domain

Jian Gao, Yuanyuan Ma, Yuna Sun, Huadong Zhao, more

Acta Crystallographica Section F > 68 > 3 > 340 - 342

BRI1‐associated kinase 1 (BAK1) is a member of the plant receptor‐like kinase (RLK) superfamily. BAK1 has been shown to initiate brassinosteroid (BR) signalling and innate immune responses in plants by forming receptor complexes with both brassinosteroid‐insensitive 1 (BRI1) and flagellin‐sensing 2 (FLS2). To gain a better understanding of the structural details and the mechanism of action of the...

article

Cellulose synthesis via the FEI2 RLK/SOS5 pathway and CELLULOSE SYNTHASE 5 is required for the structure of seed coat mucilage in Arabidopsis

Smadar Harpaz‐Saad, Heather E. McFarlane, Shouling Xu, Uday K. Divi, more

The Plant Journal > 68 > 6 > 941 - 953

The seeds of Arabidopsis thaliana and many other plants are surrounded by a pectinaceous mucilage that aids in seed hydration and germination. Mucilage is synthesized during seed development within maternally derived seed coat mucilage secretory cells (MSCs), and is released to surround the seed upon imbibition. The FEI1/FEI2 receptor‐like kinases and the SOS5 extracellular GPI‐anchored protein were...

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Keywords

RECEPTOR‐LIKE KINASES (13)
ARABIDOPSIS (2)
ARABIDOPSIS THALIANA (2)
INNATE IMMUNITY (2)
LRR (2)
LYCOPERSICON ESCULENTUM (2)
ACTIVATION LOOP (1)
AGP (1)
ALTERNATIVE PROCESSING/SPLICING (1)
ARABIDOPSIS THALIANA GPA1 (ATGPA1) (1)
BRI1‐ASSOCIATED KINASE 1 (1)
CAMBIUM (1)
CATALYTIC LOOP (1)
CELLULOSE (1)
CELL–CELL COMMUNICATION (1)
DECISION‐MAKING (1)
DROUGHT SIGNALLING (1)
EXTRACELLULAR MATRIX (1)
EXTRACELLULAR SIGNALLING (1)
G PROTEIN ALPHA SUBUNIT (1)
HETEROTRIMERIC G PROTEIN (1)
JASMONIC ACID (1)
LATERAL PLANT GROWTH (1)
LATERAL ROOT DEVELOPMENT (1)
LECTIN (1)
LECTIN‐RLK (1)
LEPRK1 (1)
LEPRK2 (1)
LEUCINE‐RICH REPEATS (1)
MUCILAGE (1)
PATHOGEN‐ASSOCIATED MOLECULAR PATTERNS (1)
PATTERN‐RECOGNITION RECEPTORS (1)
PECTIN (1)
PHOSPHORYLATION (1)
PHYLOGENOMICS (1)
PLANT DEFENCE (1)
PLANT IMMUNITY (1)
PLANT–MICROBE INTERACTION (1)
PLANT–PATHOGEN INTERACTIONS (1)
PLASMODESMATA (1)
PROTEIN KINASE‐LIKE NON‐KINASES (1)
PSEUDOENZYMES (1)
PSEUDOKINASES (1)
PSEUDOMONAS (1)
RECEPTOR LIKE KINASES (RLKS) (1)
REGULATORY SPINE (1)
RESISTANCE GENES (1)
ROOT APICAL MERISTEM (1)
ROOT EPIDERMAL PATTERNING (1)
S DOMAINS (1)
SEED (1)
SELF‐INCOMPATIBILITY (1)
SIGNAL PERCEPTION (1)
STEM CELL NICHE (1)
VASCULAR DEVELOPMENT (1)
WOOD FORMATION (1)
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