Plant resistance reactions against fungi. Biochemical and molecular aspects of relations between hosts and pathogens
Aspects biochimiques et moléculaires de la résistance des plantes aux attaques des champignons

---

Plant resistance reactions against fungi. Biochemical and molecular aspects of relations between hosts and pathogens
Aspects biochimiques et moléculaires de la résistance des plantes aux attaques des champignons

---

pathogenic fungi are the cause of major biotic stresses and account for about 80-85% of plant diseases leading to significant damages. Plant resistance against fungi as pathogens depends on many factors, such as plant genetic background, environmental conditions and physiological status.

---

1. Plant diseases caused by fungi.
- Examples in cucurbitaceae
- Examples in date palm (Phoenix dactylifera L.)

---

2. Plant passive defenses against pathogens
- Anticipins
- Anticipins. Example
- Plant phenolics as passive defenses against pathogens :
-- Study 1: Toxic phenols against Verticilium albo-atrum growth (LeTourneau et al. (1957), Phytopathology 47, 602.
-- Study 2: Relation entre la toxicité des phénols vis à vis des chamignons et leur structure chimique (Rahouti et al. (1997), Actes Inst. Agron. Vet. (Maroc) 17, 165.
-- Study 3: Phenolics (preformed) act on fungi through inhibition and inactivation of enzymes produced by pathogens. Example of polygalacturonase (PG)
-- Study 4: Phenolics can suppress toxin production by pathogens or detoxify toxins.

3. Plant active defenses against pathogens
- Active defences involve Salicylic acid (SA), Jasmonic acid (JA) and Ethylene (ET).
- Mobilization of secondary metabolism:
-- Oxidized phenolics induce resistance
-- Phytoalexines
- Mobilization of primary metabolism:
-- Pathogenesis-Related (PR) Proteins.
-- Enzymes lytiques: chitinase, glucanase. Example of Chitinase of muskmelon
-- Peroxidase

4. Engineered plants for resistance against pathogens
- Examples of ingineered plants for resistance against pathogens

---

Share this information on social networks
تبادل المعلومة عبر المواقع الإجتماعية

---

Biotech-ecolo. net. SUPPORTS

CHAINE YOUTUBE Chaine Youtube (abonnement). Plusieurs vidéos multilingues (+ s/titres) aux sujets des Biotechnologies et Biochimie

---

OUVRAGES

400 QCM et Concours (Ar, Fr) sur Structure et Métabolisme des Sucres, M. Baaziz, 2018:
- Présentation du livre
- Affiche du Livre

Glossaire trilingues Français-Arabe-Anglais

- Livre 'Sciences de la vie. Protéines et Enzymes' (+ DVD),Baaziz, 2013: QCM corrigés, Exercices corrigés, Contrôles corrigés en Biologie cellulaire et Biochimie pour S1, S3, S4 et S5.

---

Biotechnologies.QCMs, Examens ..

---

biotech-ecolo. ANNONCES

ENSEIGNEMENT DE MASTER

---

- - Cours du Master Biotechnologies et Amélioration des Plantes, Marrakech

- Travaux pratiques Master Biotechnologies et Amélioration des Plantes, Marrakech

- Master course 'Plant resistance against pathogens'

---

COURS, WORKSHOPS

---

- Annonces de Cours

- Annonces de Workshops

---

BOURSE, POSTDOCS

---

BOURSES

POSTDOCS

NEWSLETTER

---

NEWSLETTER BIOTECHNOLOGIES

NEWSLETTER BIOCHIMIE