Mitogen-Activated Protein Kinase Cascades in Plant Hormone Signaling

Jagodzik, Przemysław; Tajdel-Zielińska, Małgorzata; Cieśla, Agata; Marczak, Małgorzata; Ludwików, Agnieszka

doi:10.3389/fpls.2018.01387

Cited by 257 publications

(172 citation statements)

References 373 publications

(514 reference statements)

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“…The MAPK kinase kinases (MAPKKK) are activated by upstream signals to phosphorylate a MAPK kinase (MKK) that in turn activated a specific MAPK. MAPK pathways are activated in signaling pathways such as plant innate immunity, plant defense, and hormone responses [43,45]. GRMZM2G400470 is a MAPKK2 which was reported to be activated in an MAPK cascade namely MEKK1-MKK1/MKK2-MPK4 in Arabidopsis during plant pathogen perception [46].…”

Section: Resultsmentioning

confidence: 99%

Genome-Wide Analyses and Prediction of Resistance to MLN in Large Tropical Maize Germplasm

Nyaga

Gowda

Beyene

et al. 2019

Genes

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Maize lethal necrosis (MLN), caused by co-infection of maize chlorotic mottle virus and sugarcane mosaic virus, can lead up to 100% yield loss. Identification and validation of genomic regions can facilitate marker assisted breeding for resistance to MLN. Our objectives were to identify marker-trait associations using genome wide association study and assess the potential of genomic prediction for MLN resistance in a large panel of diverse maize lines. A set of 1400 diverse maize tropical inbred lines were evaluated for their response to MLN under artificial inoculation by measuring disease severity or incidence and area under disease progress curve (AUDPC). All lines were genotyped with genotyping by sequencing (GBS) SNPs. The phenotypic variation was significant for all traits and the heritability estimates were moderate to high. GWAS revealed 32 significantly associated SNPs for MLN resistance (at p < 1.0 × 10 −6 ). For disease severity, these significantly associated SNPs individually explained 3-5% of the total phenotypic variance, whereas for AUDPC they explained 3-12% of the total proportion of phenotypic variance. Most of significant SNPs were consistent with the previous studies and assists to validate and fine map the big quantitative trait locus (QTL) regions into few markers' specific regions. A set of putative candidate genes associated with the significant markers were identified and their functions revealed to be directly or indirectly involved in plant defense responses. Genomic prediction revealed reasonable prediction accuracies. The prediction accuracies significantly increased with increasing marker densities and training population size. These results support that MLN is a complex trait controlled by few major and many minor effect genes.

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Section: Resultsmentioning

confidence: 99%

Genome-Wide Analyses and Prediction of Resistance to MLN in Large Tropical Maize Germplasm

Nyaga

Gowda

Beyene

et al. 2019

Genes

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“…MAPKs are also reportedly involved in plant defense response by regulating the JA-and SA signaling as well as downstreaming transcription factors. This is discussed in detail by a recently published review [162].…”

Section: Biotic Stress Signaling Integration With the Aba Signaling Pmentioning

confidence: 97%

Integration of Abscisic Acid Signaling with Other Signaling Pathways in Plant Stress Responses and Development

Kumar

Kesawat

Ali

et al. 2019

Plants

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Plants are immobile and, to overcome harsh environmental conditions such as drought, salt, and cold, they have evolved complex signaling pathways. Abscisic acid (ABA), an isoprenoid phytohormone, is a critical signaling mediator that regulates diverse biological processes in various organisms. Significant progress has been made in the determination and characterization of key ABA-mediated molecular factors involved in different stress responses, including stomatal closure and developmental processes, such as seed germination and bud dormancy. Since ABA signaling is a complex signaling network that integrates with other signaling pathways, the dissection of its intricate regulatory network is necessary to understand the function of essential regulatory genes involved in ABA signaling. In the present review, we focus on two aspects of ABA signaling. First, we examine the perception of the stress signal (abiotic and biotic) and the response network of ABA signaling components that transduce the signal to the downstream pathway to respond to stress tolerance, regulation of stomata, and ABA signaling component ubiquitination. Second, ABA signaling in plant development processes, such as lateral root growth regulation, seed germination, and flowering time regulation is investigated. Examining such diverse signal integration dynamics could enhance our understanding of the underlying genetic, biochemical, and molecular mechanisms of ABA signaling networks in plants. 592 2 of 20 and developmental stages, plants were experiencing drought stress [5,[9][10][11][12][13][14][15][16][17]. Therefore, ABA is a misnomer [18], even though it plays a role in leaf senescence and seed dormancy, potentially via osmotic effects [19][20][21]. It has been observed that drought-stressed vegetative tissues of numerous plants accumulate ABA (40-fold induction) within hours of osmotic stress and then it decreases after rehydration. In addition, ABA has been considered a long-distance stress signal between shoots and roots [22]. Therefore, the study of spatiotemporal expression of genes that control ABA metabolism's rate-limiting steps is essential for understanding how plants adapt to stress. Other than its role in adaptation to abiotic stress, ABA has been shown to be a key regulator of pathogen virulence [23][24][25][26][27], which could offer insights into the basis of the ABA-synthesizing ability of numerous bio-and necrotrophic microbes [24,[28][29][30].Gene products acting in the vicinity of the cell wall or at the interface of the plasma membrane/cytoskeleton/cell wall are considered the most likely elements to participate in initial stress perception. For instance, gated aquaporins (plasma membrane intrinsic proteins (PIPs)) and osmo-/ion channels at the cell wall-plasma membrane interface may be implicated in the upstream perception [31][32][33]. The receptor of ABA remained unknown until 2009. Before then, several ABA receptors had been reported [34][35][36][37][38][39][40]; however, further investigations did not substantiate any o...

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“…FLS2-mediated perception of flg22 and its downstream signalling effects have become a paradigm for PTI in plants (reviewed in Boller and Felix, 2009). For instance, PAMP treatment triggers the rapid release of reactive oxygen species (ROS) Kunze et al, 2004), a characteristic influx of cytosolic Ca 2+ (Ma and Berkowitz, 2011), a cascade of sequential MAPK phosphorylation (Jagodzik et al, 2018), and a series of transcriptional changes (Clay et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

Inositol hexakisphosphate biosynthesis underpins PAMP‐triggered immunity to Pseudomonas syringae pv. tomato in Arabidopsis thaliana but is dispensable for establishment of systemic acquired resistance

Poon

Fevre

Carr

et al. 2019

Molecular Plant Pathology

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Phytic acid (inositol hexakisphosphate, InsP6) is an important phosphate store and signal molecule necessary for maintenance of basal resistance to plant pathogens. Arabidopsis thaliana (‘arabidopsis’) has three genes encoding myo‐inositol phosphate synthases (IPS1–3), the enzymes that catalyse conversion of glucose‐6‐phosphate to InsP, the first step in InsP6 biosynthesis. There is one gene for inositol‐(1,3,4,5,6)‐pentakisphosphate 2‐kinase (IPK1), which catalyses the final step. Previously, we showed that mutation of IPS2 and IPK1 but not IPS1 increased susceptibility to pathogens. Our aim was to better understand the InsP6 biosynthesis pathway in plant defence. Here we found that the susceptibility of arabidopsis (Col‐0) to virulent and avirulent Pseudomonas syringae pv. tomato was also increased in ips3 and ips2/3 double mutants. Also, ipk1 plants had compromised expression of local acquired resistance induced by treatment with the pathogen‐derived molecular pattern (PAMP) molecule flg22, but were unaffected in other responses to flg22, including Ca2+ influx and the oxidative burst, seedling root growth inhibition, and transcriptional up‐regulation of the PAMP‐triggered genes MITOGEN‐ACTIVATED PROTEIN KINASE (MPK) 3, MPK11, CINNAMYL ALCOHOL DEHYDROGENASE 5, and FLG22‐INDUCED RECEPTOR‐LIKE KINASE 1. IPK1 mutation did not prevent the induction of systemic acquired resistance by avirulent P. syringae. Also, ips2 and ips2/3 double mutant plants, like ipk1, were hypersusceptible to P. syringae but were not compromised in flg22‐induced local acquired resistance. The results support the role of InsP6 biosynthesis enzymes in effective basal resistance and indicate that there is more than one basal resistance mechanism dependent upon InsP6 biosynthesis.

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Mitogen-Activated Protein Kinase Cascades in Plant Hormone Signaling

Cited by 257 publications

References 373 publications

Genome-Wide Analyses and Prediction of Resistance to MLN in Large Tropical Maize Germplasm

Genome-Wide Analyses and Prediction of Resistance to MLN in Large Tropical Maize Germplasm

Integration of Abscisic Acid Signaling with Other Signaling Pathways in Plant Stress Responses and Development

Inositol hexakisphosphate biosynthesis underpins PAMP‐triggered immunity to Pseudomonas syringae pv. tomato in Arabidopsis thaliana but is dispensable for establishment of systemic acquired resistance

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