The Arabidopsis Wall Associated Kinase-like 10 Gene Encodes a Functional Guanylyl Cyclase and is Co-expressed with Pathogen Defense Related Genes
Overview
Affiliations
Background: Second messengers have a key role in linking environmental stimuli to physiological responses. One such messenger, guanosine 3',5'-cyclic monophosphate (cGMP), has long been known to be an essential signaling molecule in many different physiological processes in higher plants, including biotic stress responses. To date, however, the guanylyl cyclase (GC) enzymes that catalyze the formation of cGMP from GTP have largely remained elusive in higher plants.
Principal Findings: We have identified an Arabidopsis receptor type wall associated kinase-like molecule (AtWAKL10) as a candidate GC and provide experimental evidence to show that the intracellular domain of AtWAKL10(431-700) can generate cGMP in vitro. Further, we also demonstrate that the molecule has kinase activity indicating that AtWAKL10 is a twin-domain catalytic protein. A co-expression and stimulus-specific expression analysis revealed that AtWAKL10 is consistently co-expressed with well characterized pathogen defense related genes and along with these genes is induced early and sharply in response to a range of pathogens and their elicitors.
Conclusions: We demonstrate that AtWAKL10 is a twin-domain, kinase-GC signaling molecule that may function in biotic stress responses that are critically dependent on the second messenger cGMP.
Moonlighting Crypto-Enzymes and Domains as Ancient and Versatile Signaling Devices.
Turek I, Wong A, Domingo G, Vannini C, Bracale M, Irving H Int J Mol Sci. 2024; 25(17).
PMID: 39273482 PMC: 11394779. DOI: 10.3390/ijms25179535.
Noel K, Wolf I, Hughes D, Valente G, Qi A, Huang Y Sci Rep. 2024; 14(1):5023.
PMID: 38424101 PMC: 10904819. DOI: 10.1038/s41598-024-53643-7.
The ZmWAKL-ZmWIK-ZmBLK1-ZmRBOH4 module provides quantitative resistance to gray leaf spot in maize.
Zhong T, Zhu M, Zhang Q, Zhang Y, Deng S, Guo C Nat Genet. 2024; 56(2):315-326.
PMID: 38238629 PMC: 10864183. DOI: 10.1038/s41588-023-01644-z.
Yu X, Wang H, Lei F, Li R, Yao H, Shen J Front Plant Sci. 2023; 14:1208549.
PMID: 38078092 PMC: 10704477. DOI: 10.3389/fpls.2023.1208549.
A methane-cGMP module positively influences adventitious rooting.
Kong L, Wang Y, Li M, Cai C, Li L, Wang R Plant Cell Rep. 2023; 42(7):1163-1177.
PMID: 37084115 DOI: 10.1007/s00299-023-03019-4.