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Université de Neuchâtel

Molecular Characterization of a Novel Lipase-Like Pathogen-Inducible Gene Family of Arabidopsis

Jakab, Gabor ; Manrique, Amapola ; Zimmerli, Laurent ; Métraux, Jean-Pierre ; Mauch-Mani, Brigitte

In: Plant Physiology, 2003, vol. 132, no. 4, p. 2230-2239

In a differential screening between Arabidopsis plants pretreated with the resistance-inducer ß-aminobutyric acid and untreated control plants, we have identified a gene encoding a novel lipase-like protein, PRLIP1. The abundance of PRLIP1 mRNAs in Arabidopsis leaves was up-regulated by application of ß-aminobutyric acid, salicylic acid (SA), and ethylene as well as by various...

Université de Neuchâtel

Enhancing Arabidopsis Salt and Drought Stress Tolerance by Chemical Priming for Its Abscisic Acid Responses

Jakab, Gabor ; Ton, Jurriaan ; Flors, Victor ; Zimmerli, Laurent ; Métraux, Jean-Pierre ; Mauch-Mani, Brigitte

In: Plant Physiology, 2005, vol. 139, p. 267-274

Drought and salt stress tolerance of Arabidopsis (Arabidopsis thaliana) plants increased following treatment with the nonprotein amino acid -aminobutyric acid (BABA), known as an inducer of resistance against infection of plants by numerous pathogens. BABA-pretreated plants showed earlier and higher expression of the salicylic acid-dependent PR-1 and PR-5 and the abscisic...

Université de Neuchâtel

Dissecting the ß-Aminobutyric Acid–Induced Priming Phenomenon in Arabidopsis

Ton, Jurriaan ; Jakab, Gabor ; Toquin, Valérie ; Flors, Victor ; Iavicoli, Annalisa ; Maeder, Muriel N. ; Métraux, Jean-Pierre ; Mauch-Mani, Brigitte

In: The Plant Cell, 2005, vol. 17, no. 3, p. 987-999

Plants treated with the nonprotein amino acid ß-aminobutyric acid (BABA) develop an enhanced capacity to resist biotic and abiotic stresses. This BABA-induced resistance (BABA-IR) is associated with an augmented capacity to express basal defense responses, a phenomenon known as priming. Based on the observation that high amounts of BABA induce sterility in Arabidopsis thaliana, a...

Université de Neuchâtel

The xenobiotic β-aminobutyric acid enhances Arabidopsis thermotolerance

Zimmerli, Laurent ; Hou, Bi-Huei ; Tsai, Chia-Hong ; Jakab, Gabor ; Mauch-Mani, Brigitte ; Somerville, Shauna

In: The Plant Journal, 2007, vol. 53, no. 4, p. 144-156

The non-protein amino acid β-aminobutyric acid (BABA) primes Arabidopsis to respond more quickly and strongly to pathogen and osmotic stress. Here, we report that BABA also significantly enhances acquired thermotolerance in Arabidopsis. This thermotolerance was dependent on heat shock protein 101, a critical component of the normal heat-shock response. BABA did not enhance basal thermotolerance...

Université de Neuchâtel

Interplay between JA, SA and ABA signalling during basal and induced resistance against Pseudomonas syringae and Alternaria brassicicola

Flors, Victor ; Ton, Jurriaan ; van Doorn, Ronald ; Jakab, Gabor ; García-Agustín, Pilar ; Mauch-Mani, Brigitte

In: The Plant Journal, 2007, vol. 54, no. 1, p. 81-92

We have examined the role of the callose synthase PMR4 in basal resistance and β-aminobutyric acid-induced resistance (BABA-IR) of Arabidopsis thaliana against the hemi-biotrophic pathogen Pseudomonas syringae and the necrotrophic pathogen Alternaria brassicicola. Compared to wild-type plants, the pmr4-1 mutant displayed enhanced basal resistance against P....

Université de Neuchâtel

Priming by airborne signals boosts direct and indirect resistance in maize

Ton, Jurriaan ; D'Alessandro, Marco ; Jourdie, Violaine ; Jakab, Gabor ; Karlen, Danielle ; Held, Matthias ; Mauch-Mani, Brigitte ; Turlings, Ted C. J.

In: The Plant Journal, 2007, vol. 49, no. 1, p. 16-26

Plants counteract attack by herbivorous insects using a variety of inducible defence mechanisms. The production of toxic proteins and metabolites that instantly affect the herbivore's development are examples of direct induced defence. In addition, plants may release mixtures of volatile organic compounds (VOCs) that indirectly protect the plant by attracting natural enemies of the herbivore....

Université de Neuchâtel

β-Aminobutyric Acid-Induced Resistance Against Downy Mildew in Grapevine Acts Through the Potentiation of Callose Formation and Jasmonic Acid Signaling

Hamiduzzaman, Mollah Md. ; Jakab, Gabor ; Barnavon, Laurent ; Neuhaus, Jean-Marc ; Mauch-Mani, Brigitte

In: Molecular Plant Microbe-Interactions, 2005, vol. 18, no. 8, p. 819-829

β-Aminobutyric acid (BABA) was used to induce resistance in grapevine (Vitis vinifera) against downy mildew (Plasmopara viticola). This led to a strong reduction of mycelial growth and sporulation in the susceptible cv. Chasselas. Comparing different inducers, the best protection was achieved with BABA followed by jasmonic acid (JA), whereas benzo (1,2,3)-thiadiazole-7-carbothionic...

Université de Neuchâtel

Abscisic Acid and Callose : Team Players in Defence Against Pathogens ?

Flors, V. ; Ton, Jurriaan ; Jakab, Gabor ; Mauch-Mani, Brigitte

In: Journal of Phytopathology, 2005, vol. 153, no. 7-8, p. 377-383

Abscisic acid (ABA) plays an important role as a plant hormone and as such is involved in many different steps of plant development. It has also been shown to modulate plant responses to abiotic stress situations and in recent years, it has become evident that it is partaking in processes of plant defence against pathogens. Although ABA's role in influencing the outcome of plant-pathogen...

Université de Neuchâtel

Potentiation of pathogen-specific defense mechanisms in Arabidopsis by β-aminobutyric acid

Laurent Zimmerli ; Jakab, Gabor ; Métraux, Jean-Pierre ; Mauch-Mani, Brigitte

In: Proceedings of the National Academy of Sciences of the United States of America, 2000, vol. 97, no. 23, p. 12920-12925

The nonprotein amino acids γ-aminobutyric acid (GABA) and β-aminobutyric acid (BABA) have known biological effects in animals and plants. Their mode of action has been the object of thorough research in animals but remains unclear in plants. Our objective was to study the mode of action of BABA in the protection of Arabidopis plants against virulent pathogens. BABA protected...