The class <scp>III</scp> peroxidase <scp>PRX</scp>17 is a direct target of the <scp>MADS</scp>‐box transcription factor AGAMOUS‐LIKE15 (<scp>AGL</scp>15) and participates in lignified tissue formation

Cosio, Claudia; Ranocha, Philippe; Francoz, Edith; Burlat, Vincent; Zheng, Yumei; Perry, Sharyn E.; Ripoll, Juan-José; Yanofsky, Martin F.; Dunand, Christophe

doi:10.1111/nph.14127

Cited by 76 publications

(59 citation statements)

References 79 publications

(142 reference statements)

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“…The lower expression of POX7, POX23, and POX57 is of particular interest, because they were found to negatively control leaf expansion (Lu et al, 2014). In addition, HBI1 represses POX17, which promotes tissue lignification during development (Cosio et al, 2017). Furthermore, POX33, an essential component of the PAMP-triggered oxidative burst (Daudi et al, 2012), is repressed by HBI1 ( Figure 3B).…”

Section: Hbi1 Represses Apoplastic H 2 O 2 Levels By Regulating Classmentioning

confidence: 99%

HBI1 Mediates the Trade-off between Growth and Immunity through Its Impact on Apoplastic ROS Homeostasis

et al. 2019

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Graphical Abstract Highlights d Arabidopsis HBI1 is a transcriptional regulator of ROS homeostasis d HBI1 promotes leaf cell expansion through RbohC d RbohA negatively regulates growth but promotes disease resistance d The growth defense trade-off results from incompatible ROS requirements SUMMARYPlants continuously need to adapt to their environment and prioritize either growth or defense responses to secure survival and reproduction. Tradeoffs between growth and defense are often attributed to the allocation of energy for growth to adaptation responses. Still, the exact mechanisms underlying growth and defense trade-offs are poorly understood.Here, we demonstrate that the growth-related transcription factor HOMOLOG OF BEE2 INTERACTING WITH IBH 1 (HBI1) regulates apoplastic reactive oxygen species (ROS) homeostasis by differentially controlling the expression of NADPH oxidases (NOXs) and peroxidases (POXs). The HBI1 target genes RESPIRATORY BURST OXIDASE HOMOLOG A (RbohA) and RbohC have contrasting effects on the regulation of cell size. In addition, the HBI1-controlled NOXs and POXs oppositely regulate susceptibility toward Pseudomonas syringae. Our findings reveal that the incompatibility between growth and defense programs can be attributed to the way apoplastic ROS homeostasis is modulated during both processes.

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Section: Hbi1 Represses Apoplastic H 2 O 2 Levels By Regulating Classmentioning

confidence: 99%

HBI1 Mediates the Trade-off between Growth and Immunity through Its Impact on Apoplastic ROS Homeostasis

et al. 2019

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“…A study by Giménez et al (2010) investigated TALG1, an AGAMOUS-LIKE gene in tomato, and found that TAGL1 RNAi-silenced fruits showed increased lignin content, and increased expression levels of lignin biosynthesis genes (Giménez et al, 2010). A recent study by Cosio et al (2017) showed that AGL15 in Arabidopsis is also involved in regulating lignin-related functions, in that AGL15 binds to the promotor of peroxidase PRX17, and regulates its expression (Cosio et al, 2017). In addition, PRX17 loss of function mutants had reduced lignin content (Cosio et al, 2017).…”

Section: Agamous-like Genesmentioning

confidence: 99%

Pleiotropic and Epistatic Network-Based Discovery: Integrated Networks for Target Gene Discovery

et al. 2018

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Biological organisms are complex systems that are composed of functional networks of interacting molecules and macro-molecules. Complex phenotypes are the result of orchestrated, hierarchical, heterogeneous collections of expressed genomic variants. However, the effects of these variants are the result of historic selective pressure and current environmental and epigenetic signals, and, as such, their co-occurrence can be seen as genome-wide correlations in a number of different manners. Biomass recalcitrance (i.e., the resistance of plants to degradation or deconstruction, which ultimately enables access to a plant's sugars) is a complex polygenic phenotype of high importance to biofuels initiatives. This study makes use of data derived from the re-sequenced genomes from over 800 different Populus trichocarpa genotypes in combination with metabolomic and pyMBMS data across this population, as well as co-expression and co-methylation networks in order to better understand the molecular interactions involved in recalcitrance, and identify target genes involved in lignin biosynthesis/degradation. A Lines Of Evidence (LOE) scoring system is developed to integrate the information in the different layers and quantify the number of lines of evidence linking genes to target functions. This new scoring system was applied to quantify the lines of evidence linking genes to lignin-related genes and phenotypes across the network layers, and allowed for the generation of new hypotheses surrounding potential new candidate genes involved in lignin biosynthesis in P. trichocarpa, including various AGAMOUS-LIKE genes. The resulting Genome Wide Association Study networks, integrated with Single Nucleotide Polymorphism (SNP) correlation, co-methylation, and co-expression networks through the LOE scores are proving to be a powerful approach to determine the pleiotropic and epistatic relationships underlying cellular functions and, as such, the molecular basis for complex phenotypes, such as recalcitrance.

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“…A study by Gimenez et al (2010) investigated TALG1, an AGAMOUS-LIKE gene in tomato, and found that TAGL1 RNAi-silenced fruits showed increased lignin content, and increased expression levels of lignin biosynthesis genes (Giménez et al, 2010). A recent study by Cosio et al (2017) showed that AGL15 in Arabidopsis is also involved in regulating lignin-related functions, in that AGL15 binds to the promotor of peroxidase PRX17, and regulates its expression (Cosio et al, 2017). In addition, PRX17 loss of function mutants had reduced lignin content (Cosio et al, 2017).…”

Section: Agamous-like Genesmentioning

confidence: 99%

Pleiotropic and Epistatic Network-Based Discovery: Integrated Networks for Target Gene Discovery

Weighill

Jones

Shah

et al. 2018

Preprint

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Biological organisms are complex systems that are composed of functional networks of interacting molecules and macromolecules. Complex phenotypes are the result of orchestrated, hierarchical, heterogeneous collections of expressed genomic variants. However, the effects of these variants are the result of historic selective pressure and current environmental and epigenetic signals, and, as such, their co-occurrence can be seen as genome-wide correlations in a number of different manners. Biomass recalcitrance (i.e., the resistance of plants to degradation or deconstruction, which ultimately enables access to a plant's sugars) is a complex polygenic phenotype of high importance to biofuels initiatives. This study makes use of data derived from the re-sequenced genomes from over 800 different Populus trichocarpa genotypes in combination with metabolomic and pyMBMS data across this population, as well as co-expression and co-methylation networks in order to better understand the molecular interactions involved in recalcitrance, and identify target genes involved in lignin biosynthesis/degradation. A Lines Of Evidence (LOE) scoring system is developed to integrate the information in the different layers and quantify the number of lines of evidence linking genes to lignin-related lignin-phenotypes across the network layers. The resulting Genome Wide Association Study networks, integrated with Single Nucleotide Polymorphism (SNP) correlation, co-methylation and co-expression networks through the LOE scores are proving to be a powerful approach to determine the pleiotropic and epistatic relationships underlying cellular functions and, as such, the molecular basis for complex phenotypes, such as recalcitrance.

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The class III peroxidase PRX17 is a direct target of the MADS‐box transcription factor AGAMOUS‐LIKE15 (AGL15) and participates in lignified tissue formation

Cited by 76 publications

References 79 publications

HBI1 Mediates the Trade-off between Growth and Immunity through Its Impact on Apoplastic ROS Homeostasis

HBI1 Mediates the Trade-off between Growth and Immunity through Its Impact on Apoplastic ROS Homeostasis

Pleiotropic and Epistatic Network-Based Discovery: Integrated Networks for Target Gene Discovery

Pleiotropic and Epistatic Network-Based Discovery: Integrated Networks for Target Gene Discovery

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