A wall with integrity: surveillance and maintenance of the plant cell wall under stress

Rui, Yue; Dinneny, José R.

doi:10.1111/nph.16166

Cited by 206 publications

(162 citation statements)

References 149 publications

(347 reference statements)

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“…Vogel et al [8] speculated that adjustment in pectin alteration may bring the discharge of defense elicitor-dynamic fragments upon degeneration by powdery mildew hydrolytic enzymes. The cell wall is attached to the cell surface through cell wall biosynthetic machinery, sensory, and structural proteins [9]. The plant cell wall detecting system has been posited to incorporate molecular network monitoring for (I) osmo-recognition; (ii) mechano-recognition; (iii) cell wall damage (CWD) recognition; and (iv) wall-derived ligand-receptor (PRR) recognition [5].…”

Section: Introductionmentioning

confidence: 99%

Phenylpropanoid Pathway Engineering: An Emerging Approach towards Plant Defense

et al. 2020

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Pathogens hitting the plant cell wall is the first impetus that triggers the phenylpropanoid pathway for plant defense. The phenylpropanoid pathway bifurcates into the production of an enormous array of compounds based on the few intermediates of the shikimate pathway in response to cell wall breaches by pathogens. The whole metabolomic pathway is a complex network regulated by multiple gene families and it exhibits refined regulatory mechanisms at the transcriptional, post-transcriptional, and post-translational levels. The pathway genes are involved in the production of anti-microbial compounds as well as signaling molecules. The engineering in the metabolic pathway has led to a new plant defense system of which various mechanisms have been proposed including salicylic acid and antimicrobial mediated compounds. In recent years, some key players like phenylalanine ammonia lyases (PALs) from the phenylpropanoid pathway are proposed to have broad spectrum disease resistance (BSR) without yield penalties. Now we have more evidence than ever, yet little understanding about the pathway-based genes that orchestrate rapid, coordinated induction of phenylpropanoid defenses in response to microbial attack. It is not astonishing that mutants of pathway regulator genes can show conflicting results. Therefore, precise engineering of the pathway is an interesting strategy to aim at profitably tailored plants. Here, this review portrays the current progress and challenges for phenylpropanoid pathway-based resistance from the current prospective to provide a deeper understanding.

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Section: Introductionmentioning

confidence: 99%

Phenylpropanoid Pathway Engineering: An Emerging Approach towards Plant Defense

et al. 2020

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“…Most of the studies on cell wall modifications induced upon abiotic stress have primarily focused on genes and proteins putatively involved in cell wall metabolism. However, much less is known on the structural alterations of the different cell wall polymers that are provoked by salt stress (Le Gall et al, 2015;Rui & Dinneny, 2019;Tenhaken, 2014). interactions (Burton et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

Cell wall remodeling under salt stress: Insights into changes in polysaccharides, feruloylation, lignification, and phenolic metabolism in maize

Oliveira

Mota

Salatta

et al. 2020

Plant Cell & Environment

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Although cell wall polymers play important roles in the tolerance of plants to abiotic stress, the effects of salinity on cell wall composition and metabolism in grasses remain largely unexplored. Here, we conducted an in-depth study of changes in cell wall composition and phenolic metabolism induced upon salinity in maize seedlings and plants. Cell wall characterization revealed that salt stress modulated the deposition of cellulose, matrix polysaccharides and lignin in seedling roots, plant roots and stems. The extraction and analysis of arabinoxylans by size-exclusion chromatography, 2D-NMR spectroscopy and carbohydrate gel electrophoresis showed a reduction of arabinoxylan content in salt-stressed roots. Saponification and mild acid hydrolysis revealed that salinity also reduced the feruloylation of arabinoxylans in roots of seedlings and plants. Determination of lignin content and composition by nitrobenzene oxidation and 2D-NMR confirmed the increased incorporation of syringyl units in lignin of maize roots. Salt stress also induced the expression of genes and the activity of enzymes enrolled in phenylpropanoid biosynthesis. The UHPLC-MS-based metabolite profiling confirmed the modulation of phenolic profiling by salinity and the accumulation of ferulate and its derivatives 3-and 4-O-feruloyl

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“…DAMPs represent a common signature of biotic and abiotic stress conditions in animals and plants (Gust et al, 2017;De Lorenzo et al, 2018). In plants, abiotic modulation of cell walls and phospholipid membranes generates a battery of DAMPs (Chen et al, 2020;Rui & Dinneny, 2020;Herger et al, 2019;Jiang et al, 2019).…”

Section: Discussion (11 575 Characters)mentioning

confidence: 99%

Pattern recognition receptors confer plant salt tolerance via WRKY18/WRKY40 transcription factors

Loo

Tajima

Yamada

et al. 2020

Preprint

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172/175 words)Pattern recognition receptors (PRRs) bind microbe-and damage-associated molecular patterns (MAMPs/DAMPs, respectively) to enhance host immunity in animals and plants. Here, we report that PRRs also confer salt tolerance in the model plant Arabidopsis thaliana following recognition of cognate ligands, such as bacterial flagellin and EF-Tu and the endogenous Pep peptides. Pattern-triggered salt tolerance (PTST) requires the PRR-associated kinases BAK1 and BIK1, and the NADPH oxidase RBOHD. Transcriptome profiling reveals an inventory of PTST target genes, which increase or acquire salt responsiveness following an exposure to immunogenic patterns.In their regulatory DNA sequences, specific binding sites for a subset of WRKY transcription factors are over-represented. Accordingly, PTST requires WRKY40 and WRKY18, which activate salt tolerance-related genes but attenuate pathogen defenserelated genes, including the EDS1 immunity activator. PRR signaling leads to sustained WRKY40/WRKY18 accumulation under salt stress and utilizes both WRKYs for salt tolerance. The PRR-WRKY40/WRKY18 module also confers salt tolerance after challenge with non-pathogenic bacteria. Our findings give molecular insight into signaling plasticity underlying biotic-abiotic stress cross-tolerance in plants conferred by PRRs.

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A wall with integrity: surveillance and maintenance of the plant cell wall under stress

Cited by 206 publications

References 149 publications

Phenylpropanoid Pathway Engineering: An Emerging Approach towards Plant Defense

Phenylpropanoid Pathway Engineering: An Emerging Approach towards Plant Defense

Cell wall remodeling under salt stress: Insights into changes in polysaccharides, feruloylation, lignification, and phenolic metabolism in maize

Pattern recognition receptors confer plant salt tolerance via WRKY18/WRKY40 transcription factors

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