Effect of combinations of hot water dips, biological control and controlled atmospheres for control of gray mold on harvested strawberries

2003 ◽  
Vol 27 (3) ◽  
pp. 255-264 ◽  
Author(s):  
A Wszelaki
2016 ◽  
Vol 41 (3) ◽  
pp. 169-176 ◽  
Author(s):  
Sheng Jun Xu ◽  
Duck Hwan Park ◽  
Joon-Young Kim ◽  
Byung-Sup Kim

Plants ◽  
2021 ◽  
Vol 10 (9) ◽  
pp. 1815
Author(s):  
Kazuhiro Hamaoka ◽  
Yoshinao Aoki ◽  
Shunji Suzuki

As the use of chemical fungicides has raised environmental concerns, biological control agents have attracted interest as an alternative to chemical fungicides for plant-disease control. In this study, we attempted to explore biological control agents for three fungal phytopathogens causing downy mildew, gray mold, and ripe rot in grapevines, which are derived from shoot xylem of grapevines. KOF112, which was isolated from the Japanese indigenous wine grape Vitis sp. cv. Koshu, inhibited mycelial growth of Botrytis cinerea, Colletotrichum gloeosporioides, and Phytophthora infestans. The KOF112-inhibited mycelial tips were swollen or ruptured, suggesting that KOF112 produces antifungal substances. Analysis of the 16S rDNA sequence revealed that KOF112 is a strain of Bacillus velezensis. Comparative genome analysis indicated significant differences in the synthesis of non-ribosomal synthesized antimicrobial peptides and polyketides between KOF112 and the antagonistic B. velezensis FZB42. KOF112 showed biocontrol activities against gray mold caused by B. cinerea, anthracnose by C. gloeosporioides, and downy mildew by Plasmopara viticola. In the KOF112–P. viticola interaction, KOF112 inhibited zoospore release from P. viticola zoosporangia but not zoospore germination. In addition, KOF112 drastically upregulated the expression of genes encoding class IV chitinase and β-1,3-glucanase in grape leaves, suggesting that KOF112 also works as a biotic elicitor in grapevine. Because it is considered that endophytic KOF112 can colonize well in and/or on grapevine, KOF112 may contribute to pest-management strategies in viticulture and potentially reduce the frequency of chemical fungicide application.


FLORESTA ◽  
2013 ◽  
Vol 43 (1) ◽  
pp. 145 ◽  
Author(s):  
José Antonio Sbravatti Junior ◽  
Celso Garcia Auer ◽  
Ida Chapaval Pimentel ◽  
Álvaro Figueredo dos Santos ◽  
Bruno Schultz

   O Eucalyptus benthamii é uma das principais espécies de eucalipto plantadas na região Sul do Brasil, por sua resistência a geadas e por seu uso na produção florestal de madeira para fins energéticos. Na produção de mudas, uma das principais doenças ocorrentes em viveiros é o mofo-cinzento, causado pelo fungo Botrytis cinerea. Uma das alternativas para o controle dessa doença é o controle biológico com fungos endofíticos, os quais podem competir com os patógenos foliares de mudas de eucalipto. O objetivo deste trabalho foi isolar os fungos endofíticos provenientes de mudas de E. benthamii, identificá-los e selecioná-los para o controle de B. cinerea. Eles foram isolados do interior de tecidos vegetais desinfectados, identificados de acordo com critérios macro e micromorfológicos e classificados a partir de testes de controle biológico in vitro. Os resultados evidenciaram o potencial antagonista dos fungos Aspergillus sp., Penicillium sp. e Trichoderma sp. Nenhum desses fungos causou lesões em mudas de E. benthamii.Palavras-chave: Mofo-cinzento; eucalipto; viveiro.AbstractIn vitro selection of endophytes for biological control of Botrytis cinerea in Eucalyptus benthamii. Eucalyptus benthamii is one of the main eucalypt species planted in Southern Brazil, due to its resistance to frost and its use in the production of forest wood for energy purposes. During the production of seedlings, the main disease occurring in forest nurseries is gray-mold caused by the fungus Botrytis cinerea. One alternative for control this disease is biological control with fungal endophytes, which can compete with the foliar pathogens of eucalypt seedlings. The objective of this study was to isolate endophytic fungi from seedlings of Eucalyptus benthamii, identify and select them for B. cinerea control. These were isolated from the interior of disinfected plant tissues, identified according to macro and micromorphological criteria, and based on tests of biological control in vitro. The results revealed the potential antagonist of Aspergillus sp., Penicillium sp. and Trichoderma sp. No fungi caused lesions in E. benthamii seedlings.Keywords: Gray-mold; eucalypt; nursery.    


2004 ◽  
Vol 34 (2) ◽  
pp. 169-177 ◽  
Author(s):  
Ozgur Akgun Karabulut ◽  
Franka Mlikota Gabler ◽  
Monir Mansour ◽  
Joseph L. Smilanick

2007 ◽  
Vol 40 (2) ◽  
pp. 287-292 ◽  
Author(s):  
Hongyin Zhang ◽  
Lei Wang ◽  
Ying Dong ◽  
Song Jiang ◽  
Jian Cao ◽  
...  

2021 ◽  
Vol 9 (2) ◽  
pp. 80-93
Author(s):  
Ashish Ghimire ◽  
Krishna Raj Pandey ◽  
Yagya Raj Joshi ◽  
Sobita Subedi

Mushrooms are known for several nutritional and medicinal benefits and are cultivated worldwide. Several fungal contaminants of mushrooms have been serving as the major restraining factor in the growing mushroom industry for a long time. Fungal contaminants like Trichoderma spp., Mycogone spp., Lecanicillium spp., Cladobotryum spp., Coprinus spp., Sependonium spp., Sclerotium rolfsii, and Cephalothecum roseum among many, are found to infect mushroom crops at different stages from spawn run period to maturation of fruiting bodies. These contaminants may reduce yield and/or degrade the quality of fruiting bodies of the mushroom causing economic losses. These contaminants are usually peculiar in terms of their symptomatology on the substrates, disease cycle, epidemiological requirements, and yield losses.  Most of these contaminants come from poorly sterilized substrates. Several sterilization techniques like steam sterilization, hot water sterilization, alkalinization, bleaching, and chemical sterilization can be employed to eliminate pre-existing contaminants and each technique has its own relative advantage over others. Besides, biological control involving botanicals and live antagonists can also be used as prophylactic sterilant or as therapeutic sprays. Biological control measures are friendly to the environment and human health. Unlike chemical fungicides (used as sterilant or spray), biological control measures don’t inhibit mushroom mycelial growth and even don’t raise the problem of pesticide resistance in pathogens. Roguing out of infected mushroom fruiting bodies or beds, mushroom house sanitation, and management of vector population are also equally important in preventing the spread of the fungal diseases of mushrooms. Int. J. Appl. Sci. Biotechnol. Vol 9(2): 80-93


Plant Disease ◽  
2002 ◽  
Vol 86 (8) ◽  
pp. 848-853 ◽  
Author(s):  
Shiping Tian ◽  
Qing Fan ◽  
Yong Xu ◽  
Haibo Liu

Biocontrol capability of the yeasts Trichosporon sp. and Cryptococcus albidus against Botrytis cinerea and Penicillium expansum was evaluated in apple (cv. Golden Delicious) and pear (cv. Jingbai) fruits at 1°C in air and under controlled atmospheres (CA) with 3% O2 + 3% CO2 or 3% O2 + 8% CO2. Trichosporon sp. controlled gray mold and blue mold of apple fruits more effectively than C. albidus (P < 0.05). Apple fruits treated with Trichosporon sp. and C. albidus had a lower incidence of gray mold rot than blue mold rot in the same storage conditions. Biocontrol efficacy of the yeasts for controlling gray mold and blue mold was better in apples than in pears. Populations of the yeasts in drop-inoculated wounds in fruits increased rapidly after 20 days at 1°C both in air and in CA conditions. There was no significant difference in colony diameters of the two pathogens cultured in 0 to 15% CO2 concentrations after 7 days at 20°C, but the colony diameter of both B. cinerea and P. expansum at 20% CO2 was significantly less than in other treatments (P < 0.05). CA with 3% O2 + 8% CO2 inhibited the pathogenic fungi more than CA with 3% O2 + 3% CO2.


BioControl ◽  
2017 ◽  
Vol 62 (6) ◽  
pp. 793-803 ◽  
Author(s):  
Sawai Boukaew ◽  
Poonsuk Prasertsan ◽  
Claire Troulet ◽  
Marc Bardin

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