Epicatechin and catechin may prevent coffee berry disease by inhibition of appressorial melanization of Colletotrichum kahawae

  title={Epicatechin and catechin may prevent coffee berry disease by inhibition of appressorial melanization of Colletotrichum kahawae},
  author={Zhen-jia Chen and Jingsi Liang and Changhe Zhang and Carlos J. C. Rodrigues},
  journal={Biotechnology Letters},
Colletotrichum kahawae is the causal agent of coffee berry disease. Appressorial melanization is essential for the fungal penetration of plant cuticle. Epicatechin is abundant in green coffee berry pericarp. Inoculation of C. kahawae conidial suspension containing 1.2 mg epicatechin or catechin/ml did not affect conidial germination or appressorial formation but appressorial melanization was completely inhibited and infection by the treated conidia was less than 30% of the untreated control… 
Accumulation of Catechin and Proanthocyanidins in Black Poplar Stems After Infection by Plectosphaerella populi: Hormonal Regulation, Biosynthesis and Antifungal Activity
The sustained upregulation of SA in correlation with catechin and PA accumulation suggests that this is the dominant hormone inducing the formation of antifungal flavan-3-ols during P. populi infection of poplar stems.
Flavan-3-ols Are an Effective Chemical Defense against Rust Infection1[OPEN]
Studying the biosynthesis, occurrence, and antifungal activity of flavan-3-ols in black poplar (Populus nigra), which include both monomers, such as catechin, and oligomers, known as proanthocyanidins (PAs, indicate that cate chin and PAs are effective antif fungus defenses in poplar against foliar rust infection.
Resistance of apple leaves to infection by Colletotrichum fructicola acts independently of hypersensitive reaction and PR-1 and PR-10 gene expression
Results suggest that the monogenic recessive resistance of apple to GLS acts independently of HR and both PR-1 and PR-10 genes expression.
Persimmon anthracnose caused by Colletotrichum horii: incidence in branches, leaves, flowers.
Evaluated the incidence in different parts of the plant and the development of anthracnose caused by Colletotrichum horii persimmon Fuyu and Kakimel cultivars produced under organic and conventional systems in Campina Grande do Sul, State of Parana, Brazil on growing seasons in 2010/11 and 2011/12 to find C. horii is able to infect flowers, remain latent and cause symptoms of anthacnose on immature fruits.
Localization of (+)-Catechin in Picea abies Phloem: Responses to Wounding and Fungal Inoculation
The results suggest that axial phloem parenchyma cells are the primary location for (+)-catechin storage and synthesis in Norway sprucephloem, and chemical mapping of bark defensive metabolites by cryo-ToF-SIMS can provide novel information on the local amplitudes and localizations of chemical and structural defense mechanisms and pathogen–host interactions of trees.
The Bark-Beetle-Associated Fungus, Endoconidiophora polonica, Utilizes the Phenolic Defense Compounds of Its Host as a Carbon Source1[OPEN]
The pathways for the degradation of phenolic compounds in E. polonica, initiated by catechol dioxygenase action, are important to the infection, growth, and survival of this bark beetle-vectored fungus and may play a major role in the ability of I. typographus to colonize spruce trees.
Diversity, structure, and synteny of the cutinase gene of Colletotrichum species
In vitro bioassays confirmed the ability of C. truncatum and C. brevisporum isolates from green and red bell peppers to secrete cutinase as a key component of the biotrophic–necrotrophic switch which may be useful in developing gene‐targeting strategies to decrease the pathogenic potential of Colletotrichum species.
Flavan-3-ols in Norway Spruce: Biosynthesis, Accumulation, and Function in Response to Attack by the Bark Beetle-Associated Fungus Ceratocystis polonica1[C][W][OPEN]
The genes encoding leucoanthocyanidin reductase, a branch point enzyme involved in the biosynthesis of 2,3-trans-(+)-flavan-3-ols, were identified and functionally characterized in Norway spruce and revealed that they inhibit C. polonica growth and can therefore be considered chemical defense compounds.


Involvement of epicatechin in cultivar susceptibility of avocado fruits to Colletotrichum gloeosporioides after harvest
The hypothesis that the susceptibility of avocado cultivars to post-harvest decay by C. gloeosporioides is related to the degradation of the antifungal diene, catalyzed by avocado lipoxygenase, the activity of which is regulated by the decline of its inhibitor epicatechin is discussed.
Appressorium turgor pressure of Colletotrichum kahawae might have a role in coffee cuticle penetration
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C. gloeosporioides can overwhelm C. kahawae under conditions of higher environmental temperature and humidity and may enhance the CBD infection process under field conditions.
Multiple effects of green tea catechin on the antifungal activity of antimycotics against Candida albicans.
EGCg enhances the antifungal effect of amphotericin B or fluconazole against antimycotic-susceptible and -resistant C. albicans, and is hoped that this may help to avoid the side effects of antimyCotics.
Optical measurements of invasive forces exerted by appressoria of a plant pathogenic fungus
A microscopic method was developed that uses elastic optical waveguides to visualize and measure forces locally exerted by single appressoria of C. graminicola, and found the force exerted was about 17 micronewtons.
Phenolic compounds in coffee pulp: Quantitative determination by HPLC
The content of phenolic compounds tentatively identified by HPLC in fresh coffee pulp gives an average composition in the 12 cultivars studied as follows: chlorogenic acid (5-caffeoylquinic acid),
Inhibition of fucosyltransferase VII by gallic acid and its derivatives.
The Cochliobolus carbonum SNF1 Gene Is Required for Cell Wall–Degrading Enzyme Expression and Virulence on Maize
The results indicate that ccSNF1 is required for biochemical processes important in pathogenesis by C. carbonum and suggest that penetration is the single most important step at whichccSNF 1 is required.
MAP Kinase and Protein Kinase A–Dependent Mobilization of Triacylglycerol and Glycogen during Appressorium Turgor Generation by Magnaporthe grisea
Glycogen and lipid degradation were very rapid in a Δmac1 sum1-99 mutant, which carries a mutation in the regulatory subunit of PKA, occurring before appressorium morphogenesis was complete, indicating that mass transfer of storage carbohydrate and lipid reserves to the appressoria occurs under control of the PMK1 MAPK pathway.
Appressoria turgor pressure of Colletotrichum
  • 2004