Biotransformation ofl-menthol by soil-borne plant pathogenic fungi (Rhizoctonia solani)

2001 ◽  
Vol 77 (1) ◽  
pp. 21-24 ◽  
Author(s):  
Mitsuo Miyazawa ◽  
Hideki Kawazoe ◽  
Mitsuro Hyakumachi
Keyword(s):  
Rhizoctonia Solani ◽  
Pathogenic Fungi ◽  
Plant Pathogenic Fungi

Are species concepts outdated for fungi? Intraspecific variation in plant-pathogenic fungi illustrates the need for subspecific categorization.

2021 ◽  
pp. 301-319
Author(s):  
Enrique Monte ◽  
Rosa Hermosa ◽  
María del Mar Jiménez-Gasco ◽  
Rafael M. Jiménez-Díaz
Keyword(s):  
Phylogenetic Analysis ◽  
Rhizoctonia Solani ◽  
Morphological Traits ◽  
Pathogenic Fungi ◽  
Biological Properties ◽  
Fungal Species ◽  
Phytopathogenic Fungi ◽  
Fungal Diseases ◽  
Plant Pathogenic Fungi

Abstract Precise naming of a species is very important for phytopathogenic fungi because names may carry key information for the management of the fungal diseases. Naming fungal species based on morphological traits or biological properties is outdated and unreliable. This chapter provides the classification of some plant pathogenic fungi including Rhizoctonia solani, Colletotrichum, Fusarium oxysporum, and Verticillum based on morphological, pathogenicity, molecular and phylogenetic analysis. Debate on species identification is no longer a question of being in favour of 'splitters' rather than of 'lumpers', but defining phytopathogenic species is particularly complicated and requires further consideration of subspecific categorizations.

scholarly journals Synthesis of Novel Pyrimethanil Grafted Chitosan Derivatives with Enhanced Antifungal Activity

2016 ◽  
Vol 2016 ◽  
pp. 1-8 ◽  
Author(s):  
Yan Li ◽  
Song Liu ◽  
Yukun Qin ◽  
Ronge Xing ◽  
Xiaolin Chen ◽  
...  
Keyword(s):  
Antifungal Activity ◽  
Synergistic Effect ◽  
Rhizoctonia Solani ◽  
Crop Protection ◽  
Pathogenic Fungi ◽  
Gibberella Zeae ◽  
Plant Pathogenic Fungi ◽  
H Nmr ◽  
Antifungal Properties ◽  
Ft Ir

In this study, three pyrimethanil grafted chitosan (PML-g-CS) derivatives were obtained. The structures of the conjugates were confirmed by FT-IR,1H NMR, and EA. The grafting ratios were measured by HPLC. Antifungal properties of pyrimethanil grafted chitosan (PML-g-CS) derivatives against the plant pathogenic fungiRhizoctonia solaniandGibberella zeaewere investigated at concentrations of 100, 200, and 400 mg/L. The PML-g-CS derivatives showed enhanced antifungal activity in comparison with chitosan. The PML-g-CS-1 showed the best antifungal activity againstR. solani, whose antifungal index was 58.32%. The PML-g-CS-2 showed the best antifungal activity againstG. zeae, whose antifungal index was 53.48%. The conjugation of chitosan and pyrimethanil showed synergistic effect. The PML-g-CS derivatives we developed showed potential for further study and application in crop protection.

Influence of a BactoFil microbiological preparation on the intensity of infection by Rhizoctonia solani and the effects on sugar beet yield and quality

2012 ◽  
pp. 102-109
Author(s):  
Suzana Kristek ◽  
Andrija Kristek ◽  
Dragana Kocevski ◽  
Antonija K. Jankovi ◽  
Dražen Juriši
Keyword(s):  
Sugar Beet ◽  
Rhizoctonia Solani ◽  
Nitrogen Fertilizer ◽  
Soil Analysis ◽  
Block Design ◽  
Sugar Content ◽  
Pathogenic Fungi ◽  
Fertilizer Application ◽  
Beet Root ◽  
Set Up

The experiment was set up on two types of the soil: Mollic Gleysols (FAO, 1998) and Eutric Cambisols where the presence of pathogenic fungi – sugar beet root decay agent – Rhizoctonia solani has been detected since 2005. In a two year study (2008, 2009), the experiment was set up by completely randomized block design in 4 repetitions and 16 different variants. Two beet varieties, Belinda, sensitive to pathogenic fungi R. solani, and Laetitia, tolerant to pathogenic fungi R. solani), were grown. The microbiological preparation BactoFil was applied in different amounts in autumn and spring. In addition, the nitrogen fertilizer application, based on the results of soil analysis, was varied. The following parameters were tested: amount of infected and decayed plants, root yield, sugar content, sugar in molasses and sugar yield. The best results were obtained by applying the microbiological preparation BactoFil, and by 30% reduced nitrogen fertilizer application. Preparation dosage and time of application depended on soil properties.

Fungal Phytotoxins in Sustainable Weed Management

2018 ◽  
Vol 25 (2) ◽  
pp. 268-286 ◽  
Author(s):  
Maurizio Vurro ◽  
Angela Boari ◽  
Francesca Casella ◽  
Maria Chiara Zonno
Keyword(s):  
Weed Management ◽  
Pathogenic Fungi ◽  
Mechanisms Of Action ◽  
Limiting Factors ◽  
Integrated Weed Management ◽  
Plant Pathogenic Fungi ◽  
Design Strategies ◽  
Disease Etiology ◽  
Chemical Structures ◽  
Toxic Metabolites

Fungal phytotoxins are natural secondary metabolites produced by plant pathogenic fungi during host–pathogen interactions. They have received considerable particular attention for elucidating disease etiology, and consequently to design strategies for disease control. Due to wide differences in their chemical structures, these toxic metabolites have different ecological and environmental roles and mechanisms of action. This review aims at summarizing the studies on the possible use of these metabolites as tools in biological and integrated weed management, e.g. as: novel and environmentally friendly herbicides; lead for novel compounds; sources of novel mechanisms of action. Moreover, the limiting factors for utilizing those metabolites in practice will also be briefly discussed.

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