Plant cell wall reinforcement in the disease-resistance response: molecular composition and regulation

1995 ◽  
Vol 73 (S1) ◽  
pp. 511-517 ◽  
Author(s):  
Ulrich Matern ◽  
Bernhard Grimmig ◽  
Richard Edward Kneusel
Keyword(s):  
Cell Wall ◽  
Disease Resistance ◽  
Plant Cell ◽  
Plant Cell Wall ◽  
De Novo ◽  
Alternative Pathway ◽  
Petroselinum Crispum ◽  
Phenylpropanoid Metabolism ◽  
Resistance Response ◽  
Cell Wall Reinforcement

The disease-resistance response of plant cells is composed of a multitude of biochemical events, and the activation of one of these, the phenylpropanoid metabolism, is pivotal for the survival of cells under stress conditions. The basic features of this facet of the disease-resistance response are beginning to be unraveled in model plant cell culture systems. These studies revealed a novel, alternative pathway for the synthesis of cell wall bound hydroxycinnamoyl esters and lignin. The investigations have, therefore, set the stage for a detailed analysis of the induction process that includes fast, posttranslational activation mechanisms as well as de novo enzyme synthesis. The biosynthesis of phenolic compounds destined for the cell wall is considered to reach far beyond the mere physical strengthening of the cells and includes additional functions, e.g., the release of antimycotic hydroxybenzaldehydes, which are vital for stress compensation. Key words: elicitor-induced phenylpropanoids, cell wall reinforcement, hydroxycinnamoyl esters, lignin, caffeoyl-CoA-specific 3-O-methyltransferase, disease resistance response, parsley (Petroselinum crispum) cell cultures.

scholarly journals Plant cell wall-mediated immunity: cell wall changes trigger disease resistance responses

2018 ◽  
Vol 93 (4) ◽  
pp. 614-636 ◽  
Author(s):  
Laura Bacete ◽  
Hugo Mélida ◽  
Eva Miedes ◽  
Antonio Molina
Keyword(s):  
Cell Wall ◽  
Disease Resistance ◽  
Plant Cell ◽  
Plant Cell Wall

SNARE-protein-mediated disease resistance at the plant cell wall

Nature ◽  
2003 ◽  
Vol 425 (6961) ◽  
pp. 973-977 ◽  
Author(s):  
Nicholas C. Collins ◽  
Hans Thordal-Christensen ◽  
Volker Lipka ◽  
Stephan Bau ◽  
Erich Kombrink ◽  
...  
Keyword(s):  
Cell Wall ◽  
Disease Resistance ◽  
Plant Cell ◽  
Plant Cell Wall ◽  
Snare Protein

scholarly journals Combinatorial Glycomic Analyses to Direct CAZyme Discovery for the Tailored Degradation of Canola Meal Non-Starch Dietary Polysaccharides

2020 ◽  
Vol 8 (12) ◽  
pp. 1888 ◽  
Author(s):  
Kristin E. Low ◽  
Xiaohui Xing ◽  
Paul E. Moote ◽  
G. Douglas Inglis ◽  
Sivasankari Venketachalam ◽  
...  
Keyword(s):  
Cell Wall ◽  
Plant Cell ◽  
Plant Cell Wall ◽  
High Efficiency ◽  
De Novo ◽  
Common Species ◽  
Metabolizable Energy ◽  
Canola Meal ◽  
Enzyme Linked Immunosorbent Assay ◽  
Poultry Diets

Canola meal (CM), the protein-rich by-product of canola oil extraction, has shown promise as an alternative feedstuff and protein supplement in poultry diets, yet its use has been limited due to the abundance of plant cell wall fibre, specifically non-starch polysaccharides (NSP) and lignin. The addition of exogenous enzymes to promote the digestion of CM NSP in chickens has potential to increase the metabolizable energy of CM. We isolated chicken cecal bacteria from a continuous-flow mini-bioreactor system and selected for those with the ability to metabolize CM NSP. Of 100 isolates identified, Bacteroides spp. and Enterococcus spp. were the most common species with these capabilities. To identify enzymes specifically for the digestion of CM NSP, we used a combination of glycomics techniques, including enzyme-linked immunosorbent assay characterization of the plant cell wall fractions, glycosidic linkage analysis (methylation-GC-MS analysis) of CM NSP and their fractions, bacterial growth profiles using minimal media supplemented with CM NSP, and the sequencing and de novo annotation of bacterial genomes of high-efficiency CM NSP utilizing bacteria. The SACCHARIS pipeline was used to select plant cell wall active enzymes for recombinant production and characterization. This approach represents a multidisciplinary innovation platform to bioprospect endogenous CAZymes from the intestinal microbiota of herbivorous and omnivorous animals which is adaptable to a variety of applications and dietary polysaccharides.

scholarly journals Cell wall associated immunity in plants

2021 ◽  
Vol 1 (1) ◽  
Author(s):  
Jiangxue Wan ◽  
Min He ◽  
Qingqing Hou ◽  
Lijuan Zou ◽  
Yihua Yang ◽  
...  
Keyword(s):  
Immune Response ◽  
Cell Wall ◽  
Disease Resistance ◽  
Plant Cell ◽  
Plant Disease Resistance ◽  
Plant Disease ◽  
Plant Cell Wall ◽  
Plant Immunity ◽  
Signal Molecules ◽  
Crop Breeding

AbstractThe plant cell wall is the first physical and defensive barrier against pathogens. The plant cell wall usually undergoes dynamic remodeling as an immune response to prevent infection by pathogens. In this review, we summarize advances on relationship between cell wall and immunity in plants. In particular, we outline current progresses regarding the regulation of the cell wall components, including cellulose, hemicellulose, pectin and lignin, on plant disease resistance. We also discuss the impacts of cell wall-derived cellodextrin, oligogalacturonic acid and xyloglucan/xylan oligosaccharides as potent elicitors or signal molecules to trigger plant immune response. We further propose future studies on dissecting the molecular regulation of cell wall on plant immunity, which have potentials in practical application of crop breeding aiming at improvement of plant disease resistance.

scholarly journals Arabidopsis Response Regulator 6 (ARR6) Modulates Plant Cell-Wall Composition and Disease Resistance

2020 ◽  
Vol 33 (5) ◽  
pp. 767-780 ◽  
Author(s):  
Laura Bacete ◽  
Hugo Mélida ◽  
Gemma López ◽  
Patrick Dabos ◽  
Dominique Tremousaygue ◽  
...  
Keyword(s):  
Cell Wall ◽  
Disease Resistance ◽  
Immune Responses ◽  
Plant Cell ◽  
Plant Cell Wall ◽  
Response Regulator ◽  
Cell Wall Composition ◽  
Wild Type ◽  
Molecular Patterns

The cytokinin signaling pathway, which is mediated by Arabidopsis response regulator (ARR) proteins, has been involved in the modulation of some disease-resistance responses. Here, we describe novel functions of ARR6 in the control of plant disease-resistance and cell-wall composition. Plants impaired in ARR6 function (arr6) were more resistant and susceptible, respectively, to the necrotrophic fungus Plectosphaerella cucumerina and to the vascular bacterium Ralstonia solanacearum, whereas Arabidopsis plants that overexpress ARR6 showed the opposite phenotypes, which further support a role of ARR6 in the modulation of disease-resistance responses against these pathogens. Transcriptomics and metabolomics analyses revealed that, in arr6 plants, canonical disease-resistance pathways, like those activated by defensive phytohormones, were not altered, whereas immune responses triggered by microbe-associated molecular patterns were slightly enhanced. Cell-wall composition of arr6 plants was found to be severely altered compared with that of wild-type plants. Remarkably, pectin-enriched cell-wall fractions extracted from arr6 walls triggered more intense immune responses than those activated by similar wall fractions from wild-type plants, suggesting that arr6 pectin fraction is enriched in wall-related damage-associated molecular patterns, which trigger immune responses. This work supports a novel function of ARR6 in the control of cell-wall composition and disease resistance and reinforces the role of the plant cell wall in the modulation of specific immune responses.

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