scholarly journals Bryophyte extracts suppress growth of the plant pathogenic fungus Botrytis cinerea

2019 ◽  
Vol 43 (1) ◽  
pp. 9-12 ◽  
Author(s):  
Nedeljko Latinovic ◽  
Marko Sabovljevic ◽  
Milorad Vujicic ◽  
Jelena Latinovic ◽  
Aneta Sabovljevic
Keyword(s):  
Botrytis Cinerea ◽  
Pathogenic Fungus ◽  
Grey Mould ◽  
Inhibitory Effects ◽  
Fungal Development ◽  
Plant Pathogenic Fungus ◽  
Methanol Extracts ◽  
Leafy Liverwort

In this study, the extracts of three selected bryophyte species are shown to have inhibitory effects on grey mould disease (Botrytis cinerea). Methanol extracts of one leafy liverwort (Porella platyphylla) and two mosses, one aquatic (Cinclidotus fontinaloides) and one terrestrial (Anomodon viticulosus), were applied in vitro to Botrytis cinerea, after which tests showed suppression of fungal development.

Oxidative Metabolism of Ambrox and Sclareolide by Botrytis cinerea

2000 ◽  
Vol 55 (5-6) ◽  
pp. 341-346 ◽  
Author(s):  
Afgan Farooq ◽  
Satoshi Tahara
Keyword(s):  
Botrytis Cinerea ◽  
Oxidative Metabolism ◽  
Pathogenic Fungus ◽  
Major Product ◽  
Major Metabolite ◽  
Plant Pathogenic Fungus

Ambrox (1), a perfumery diterpene, was oxidatively metabolised by a plant pathogenic fungus Botrytis cinerea in a xenobiotic fashion to afford a major product, i.e., 1β-hydroxy-8- epiambrox (13) (60% ) along with three minor metabolites 3β-hydroxyambrox (2), sclareolide (5) and 3β-hydroxysclareolide (7). Sclareolide (5), a cytotoxic diterpenoidal lactone was fermented with the same fungus to yield 3β-hydroxysclareolide (7) (59% ) as a major metabolite together with two minor metabolites characterised as 1-ketosclareolide (15), and 3β,14-dihydroxysclareolide (16).

scholarly journals Survival of Spray-Dried Rhodotorula mucilaginosa Isolated from Natural Microbiota of Murta Berries and Antagonistic Effect on Botrytis cinerea

2019 ◽  
Vol 57 (2) ◽  
pp. 222-229
Author(s):  
Alexandra González-Esparza ◽  
Kong S. Ah-Hen ◽  
Osvaldo Montenegro ◽  
Erika Briceño ◽  
Joaquín Stevenson ◽  
...  
Keyword(s):  
Botrytis Cinerea ◽  
Spray Drying ◽  
Grey Mould ◽  
Antagonistic Activity ◽  
Antagonistic Effect ◽  
Inlet Temperature ◽  
Rhodotorula Mucilaginosa ◽  
Natural Microbiota

The aim of this study is to evaluate the survival rate and effective antagonistic activity against Botrytis cinerea, responsible for grey mould on harvested fruits and vegetables, of yeast Rhodotorula mucilaginosa, isolated and identified from the natural microbiota of murta (Chilean guava) berries, after spray drying at different inlet air temperatures, mass per volume ratio of encapsulating agent (maltodextrin) and feed flow rates. The 100 % survival of the yeast was obtained after spray drying with 18 % maltodextrin at 130 °C inlet temperature and a feed flow rate of 9.25 mL/min. The dried yeast obtained under such conditions had the highest antagonistic activity in vitro and in vivo on apples, which showed that spray drying is a valid method to produce active dried cells of R. mucilaginosa that can be used for biocontrol of grey mould spoilage. It was also found that the encapsulating agent maltodextrin improved the in vitro antagonistic activity of R. mucilaginosa.

scholarly journals In vitro Antifungal Activity of a New Bioproduct Obtained from Grape Seed Proanthocyanidins on Botrytis cinerea Mycelium and Spores

2018 ◽  
Vol 47 (2) ◽  
pp. 418-425
Author(s):  
Ancuța NECHITA ◽  
Razvan V. FILIMON ◽  
Roxana M. FILIMON ◽  
Lucia-Cintia COLIBABA ◽  
Daniela GHERGHEL ◽  
...  
Keyword(s):  
Antifungal Activity ◽  
Botrytis Cinerea ◽  
Total Content ◽  
Grey Mould ◽  
Grape Seed ◽  
Fungal Mycelium ◽  
Grape Seeds ◽  
Grape Seed Proanthocyanidins ◽  
Pathogen Populations

Botrytis cinerea is a necrotrophic fungus that affects over 200 plant species. In vineyards, this pathogen is responsible for one of the most important diseases, commonly known as botrytis bunch rot or grey mould. Keeping infection under control with synthetic fungicides leads to an increased biological resistance of pathogen populations. An alternative way to synthetic products is to obtain natural fungicides by using bioactive compounds of plants. This study focuses on the antifungal properties of a new bioproduct obtained from polymeric proanthocyanidins extracted from grape seeds of ‘Fetească neagră’ variety. The bioproduct in solid state presented a total content of polyphenols of 0.625 mg GAE mg-1, a polyphenolic index of 17.40 and an antioxidant activity of 91.27% scavenged DPPH. The bioproduct with polyphenolic structure showed a moderate effect on the radial growth of fungal mycelium, at EC50 values between 11.23 and 12.15 mg mL-1. Effective antifungal activity was showed in the inhibition of spore germination, where the EC50 values varied from 1.14 to 1.47 mg mL-1. These in vitro results sustain the possibility of including the bioproduct in the category of natural fungicides for biological control against Botrytis cinerea fungus.

Virulence-Toxin Production Relationship in Isolates of the Plant Pathogenic Fungus Botrytis cinerea

2004 ◽  
Vol 152 (10) ◽  
pp. 563-566 ◽  
Author(s):  
J. L. Reino ◽  
R. Hernandez-Galan ◽  
R. Duran-Patron ◽  
I. G. Collado
Keyword(s):  
Botrytis Cinerea ◽  
Pathogenic Fungus ◽  
Toxin Production ◽  
Plant Pathogenic Fungus

scholarly journals Variability of Three Isolates of Botrytis cinerea Affects the Inhibitory Effects of Calcium on this Fungus

2000 ◽  
Vol 90 (7) ◽  
pp. 769-774 ◽  
Author(s):  
Catherine O. Chardonnet ◽  
Carl E. Sams ◽  
Robert N. Trigiano ◽  
William S. Conway
Keyword(s):  
Botrytis Cinerea ◽  
Mycelial Growth ◽  
Dna Analysis ◽  
Epidemiological Studies ◽  
Inhibitory Effects ◽  
Apple Cultivars ◽  
Sporulation Rate ◽  
Polygalacturonase Activity

Botrytis cinerea is an economically important pathogen. Epidemiological studies are difficult because of the genetic variability within this species. The objectives of this work were to study the variability and to compare the inhibitory effects of Ca on three isolates of B. cinerea from decayed apple (B) and grape (C and C77:4). Among these isolates, B had the least radial growth but had a sporulation rate 40% higher than that of both C77:4 and C. In situ, isolate C incited the largest decay area in the fruit of two of four apple cultivars examined and had the highest polygalacturonase activity in vitro. Maximum mycelial growth was reached with CaCl2 at 1 g liter-1 for isolates B and C77:4 and at 4 g liter-1 for isolate C. Calcium (CaCl2) inhibited polygalacturonase activity at 1 g liter-1 for C and C77:4 and at 16 g liter-1 for B. Calcium infiltration reduced decay caused by all three isolates by three to five times. Mycelial DNA analysis showed that 42% of the character loci scored were polymorphic and the greatest similarities were found between B and C77:4. These results support the evidence that the biological and statistical variability in research can be affected by the B. cinerea isolate selected. Despite this variation, Ca treatment of apples reduced decay caused by all three Botrytis cinerea isolates.

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