Mechanisms of coal solubilization by the deuteromycetes Trichoderma atroviride and Fusarium oxysporum

1999 ◽  
Vol 52 (1) ◽  
pp. 57-59 ◽  
Author(s):  
U. Hölker ◽  
S. Ludwig ◽  
T. Scheel ◽  
M. Höfer
Keyword(s):  
Fusarium Oxysporum ◽  
Trichoderma Atroviride ◽  
Coal Solubilization

Components of the ligninolytic system of Fusarium oxysporum and Trichoderma atroviride

1997 ◽  
Vol 52 (1-3) ◽  
pp. 73-77 ◽  
Author(s):  
Heike Mönkemann ◽  
Udo Hölker ◽  
Milan Höfer
Keyword(s):  
Fusarium Oxysporum ◽  
Trichoderma Atroviride

scholarly journals Evaluation of Trichoderma atroviride endophytes with growth-promoting activities on tomato plants and antagonistic action on Fusarium oxysporum

2020 ◽  
Vol 42 ◽  
pp. e47
Author(s):  
Rodrigo Pawloski Schoffen ◽  
Amanda Da Silva Ribeiro ◽  
Verci Alves de Oliveira-Junior ◽  
Julio Cesar Polonio ◽  
Andressa Domingos Polli ◽  
...  
Keyword(s):  
Fusarium Oxysporum ◽  
Coffea Arabica ◽  
Seedling Emergence ◽  
Partial Replacement ◽  
Trichoderma Atroviride ◽  
Antagonistic Action ◽  
Tomato Plants ◽  
Number Of Leaves ◽  
Growth Promoting

In Brazil, tomato is one of the most consumed vegetables and the fungus Fusarium oxysporum is one of the most important phytopathogen of tomato plants (Lycopersicon esculentum Mill.). Thus, the search of beneficial microorganisms with growth-promoting and/or biological control properties represent an important tool for agricultural biotechnology. Herein, two Trichoderma endophytes (strains 36b and 164b) associated with Coffea arabica were investigated on their growth-promoting activities on plants and their antagonist effects and interactions against F. oxysporum. Molecular multigene (ITS- TEF-TUB-CAL) identification and phylogenetic analysis allowed the identification of these endophytes as belonging to Trichoderma atroviride species. When inoculated with the endophytic strain 36b, tomato plants reached the highest speed of seedling emergence (83.3%), but both endophytes increased the number of leaves, root length and dry biomass of treated plants. Regarding the in vitro antagonism assay, reduced phytopathogen growth by approximately 70 (strain 36b) and 52% (strain 164b) which indicates a partial replacement of endophytes after initial deadlock with mycelial contact. Scanning electron microscopy allowed to observe the presence of Fusarium macroconidia between endophytic hyphae and conidia, with the helicoidization of endophytic hyphae, which wrapped around the pathogen hyphae, suggesting a mechanical inhibition by strangulation.

Uji Toksisitas Beberapa Fungisida Nabati terhadap Penyakit Layu Fusarium (Fusarium oxysporum) pada Tanaman Kentang (Solanum tuberosum L.) secara In Vitro (Toxicity Test of several Biofungicides in controlling Fusarium wilt (Fusarium oxysporum) in Potato Plants (Solanum tuberosum L.) by In Vitro)

2019 ◽  
Vol 9 (2) ◽  
pp. 91
Author(s):  
Ghea Dotulong ◽  
Stella Umboh ◽  
Johanis Pelealu
Keyword(s):  
Solanum Tuberosum ◽  
Fusarium Oxysporum ◽  
Fusarium Wilt ◽  
Leaf Extract ◽  
Solanum Tuberosum L ◽  
In Vitro Toxicity ◽  
Potato Plants ◽  
Colony Diameter ◽  
In Vitro Toxicity Test

Uji Toksisitas Beberapa Fungisida Nabati terhadap Penyakit Layu Fusarium (Fusarium oxysporum) pada Tanaman Kentang (Solanum tuberosum L.) secara In Vitro (Toxicity Test of several Biofungicides in controlling Fusarium wilt (Fusarium oxysporum) in Potato Plants (Solanum tuberosum L.) by In Vitro) Ghea Dotulong1*), Stella Umboh1), Johanis Pelealu1), 1) Program Studi Biologi, FMIPA Universitas Sam Ratulangi, Manado 95115*Email korespondensi: [email protected] Diterima 9 Juli 2019, diterima untuk dipublikasi 10 Agustus 2019 Abstrak Tanaman kentang (Solanum tuberosum L.) adalah salah satu tanaman hortikultura yang sering mengalami penurunan dari segi produksi dan produktivitasnya, akibat adanya serangan penyakit layu yang salah satunya disebabkan oleh Fusarium oxysporum. Tujuan penelitian ini adalah mengidentifikasi toksisitas beberapa fungisida nabati dalam mengendalikan penyakit Layu Fusarium (F. oxysporum) pada tanaman kentang (Solanum tuberosum L.) secara In Vitro. Metode Penelitian yang digunakan yaitu metode umpan beracun. Data dianalisis dengan Rancangan Acak Lengkap (RAL) dengan Analisis Varian (ANAVA) yang dilanjutkan dengan menggunakan metode BNT (Beda Nyata Terkecil). Hasil Penelitian, diperoleh nilai toksisitas fungisida nabati tertinggi yaitu pada ekstrak daun sirsak dengan nilai HR (69,44%), kategori berpengaruh, ditandai dengan diameter koloni 2,75 cm (100ppm) dan yang terendah toksisitasnya yaitu pada ekstrak daun jeruk purut dengan nilai HR (49,81%), kategori cukup berpengaruh ditandai dengan diameter koloni 3,75 cm (25ppm). Semakin tinggi konsentrasi yang diujikan maka semakin tinggi toksisitas dari fungisida nabati yang diberikan.Kata Kunci: fungisida nabati, Fusarium oxysporum, tanaman kentang, In Vitro Abstract Potato plants (Solanum tuberosum L.) is one of the horticulture plants which often decreases in terms of production and productivity, due to the attack of wilt, one of which is caused by Fusarium oxysporum. The purpose of this study was to determine the toxicity of several biofungicides in controlling Fusarium wilt (F. oxysporum) in potato plants (Solanum tuberosum L.) in Vitro. The research method used was the In Vitro method with the poison bait method. Data were analyzed by Completely Randomized Design with Variant Analysis (ANAVA), followed by the BNT method. The results showed that the highest biofungicide toxicity value was soursop leaf extract with HR values (69.44%), influential categories, characterized by colony diameter 2.75 cm (100ppm) and the lowest toxicity, namely in kaffir lime leaf extract with a value of HR (49.81%), quite influential category was characterized by colony diameter of 3.75 cm (25ppm). The higher the concentration tested, the higher the toxicity of the biofungicide given.Keywords: biofungicides, Fusarium oxysporum, Potato Plants, In Vitro.

Inhabitation of Antagonistic Bacterium B96-II to Fusarium oxysporum f. sp. asparagi*

2010 ◽  
Vol 2009 (6) ◽  
pp. 861-865 ◽  
Author(s):  
Liping MA ◽  
Bianqing HAO ◽  
Jing WANG ◽  
Shu QIN ◽  
Xiongwu QIAO
Keyword(s):  
Fusarium Oxysporum ◽  
Antagonistic Bacterium

Effects of Fusarium oxysporum f. sp. cubense race 4 on microorganisms and enzyme activities in the rhizosphere soil of banana

2013 ◽  
Vol 38 (2) ◽  
pp. 173-176 ◽  
Author(s):  
Yong-hong HUANG ◽  
Shun LÜ ◽  
Chun-yu LI ◽  
Yue-rong WEI ◽  
Gan-jun YI
Keyword(s):  
Fusarium Oxysporum ◽  
Enzyme Activities ◽  
Rhizosphere Soil ◽  
Race 4
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