Fusarium Solani
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2021 ◽  
Vol 21 (2) ◽  
Author(s):  
Shyam Govind Singh

In the present study few Fungicides and Plant extracts were tested for the control of Fusarium rot of tomato fruits, among fungicides Carbendazim was found to be the most effective in inhibiting the mycelia growth of Fusarium solani. In the case of leaf extracts, the leaf extracts of Neem (Azadirachta indica) reduced effectively the incidence of Fusarium rot of tomato fruits.


Catalysts ◽  
2021 ◽  
Vol 11 (10) ◽  
pp. 1158
Author(s):  
Zhanyong Wang ◽  
Tingting Su ◽  
Jingjing Zhao

Genipin was used as a crosslinking agent to prepare magnetic genipin-crosslinked chitosan beads, which were then used as a carrier for immobilizing recombinant cutinase from Fusarium solani (FSC) to obtain immobilized FSC. The optimal temperature for the immobilized FSC was 55 °C, which was 5 °C higher than that of the free enzyme, whereas its optimal pH was increased from 8.0 to 9.0; this indicates that the immobilized FSC had improved pH and thermal stability. After repeated use for 10 cycles, the activity of the immobilized FSC remained at more than 50%; after being stored at 4 °C for 30 days, its activity was still approximately 88%. We also found that the Km of the immobilized FSC was higher than that of the free enzyme. These results indicate that the performance of FSC was improved after immobilization, which is an important basis for the subsequent application of FSC in industrial production.


2021 ◽  
Vol 2021 ◽  
pp. 1-9
Author(s):  
Dalan Jing ◽  
Yingyu Li ◽  
Ziyuan Liu ◽  
Chen Huang ◽  
Pei Zhang ◽  
...  

Purpose. The biological characteristics of Fusarium solani clinical corneal isolates growing in different nutritional conditions in vitro were studied in order to find out the key point of pathogenicity. Methods. Five kinds of media with different glucose and nitrogen concentrations were prepared as the liquid and solid forms. The clinical isolates were as follows: 2 Fusarium solani strains. The clinical corneal isolates and the standard strains were inoculated in the solid and liquid media. They were all incubated at 296 for 96 h and observed at defined time points. The optical density was recorded to generate the growth curves in liquid media. Morphologic changes of colonies in the solid media were determined under the light microscope. Results. The clinical isolates of Fusarium solani showed stronger reproductive capacity in the abominable nutritional condition. Besides, when the glucose concentration in the medium was consistent with the glucose concentration of aqueous in diabetic patients, the clinical isolates would show the biological features of quicker growth rate and stronger reproductive capacity. Conclusions. Nitrogen source is essential for fungus reproduction. The clinical isolates showed stronger environmental adaptability under different nutritional conditions and more sensitive to environmental changes.


2021 ◽  
Vol 7 (9) ◽  
pp. 765
Author(s):  
Amira Susana Nieva ◽  
Fernando Matías Romero ◽  
Alexander Erban ◽  
Pedro Carrasco ◽  
Oscar Adolfo Ruiz ◽  
...  

Root fungal endophytes are essential mediators of plant nutrition under mild stress conditions. However, variations in the rhizosphere environment, such as nutrient depletion, could result in a stressful situation for both partners, shifting mutualistic to nonconvenient interactions. Mycorrhizal fungi and dark septate endophytes (DSEs) have demonstrated their ability to facilitate phosphate (Pi) acquisition. However, few studies have investigated other plant–fungal interactions that take place in the root environment with regard to phosphate nutrition. In the present research work, we aimed to analyze the effect of extreme Pi starvation and the fungal endophyte Fusarium solani on the model Lotus japonicus and the crop L. tenuis. We conducted metabolomics analysis based on gas chromatography-mass spectrometry (GC-MS) on plant tissues under optimal conditions, severe Pi starvation and F.solani presence. By combining statistical and correlation network analysis strategies, we demonstrated the differential outcomes of the two plant species against the combination of treatments. The combination of nutritional stress and Fusarium presence activated significant modifications in the metabolism of L. japonicus affecting the levels of sugars, polyols and some amino acids. Our results display potential markers for further inspection of the factors related to plant nutrition and plant–fungal interactions.


Author(s):  
Ranjana Juwantha Akshit K. Lohan ◽  
Mohit Singh Bisht Jalaj Saxena ◽  
Pooja Kapoor

Investigation of plants that possess natural antimicrobial substances for plant protection has been recognized as a promising disease management strategy. Alternaria alternata, Fusarium solani, Macrophomina spp., and Pestalotiopsis spp. isolated from diverse hosts such as Azadirachta indica, Melia dubia, Saraca indica and Quercus leucotrichophora produce important diseases in forest nurseries such as leaf blight, leaf spot, and wilt. In this study, botanicals from two invasive plant species, Ageratina adenophora and Ageratum conyzoides, were prepared and tested against plant diseases. Two botanicals (Methanolic extract obtained from the leaves of these two invasive species) and two fungicides were evaluated for their fungal growth inhibitory effects. At 1.5 percent concentration, the methanolic extract of Ageratina adenophora was found highly effective, inhibiting the growth of Macrophomina spp., (71.94%) followed by Pestalotiopsis spp. (70.20%), Alternaria alternate (51.92%) and Fusarium solani (47.03%). Whereas, Systemic chemical fungicide Thiophanate methylat 1.5% concentration showed maximum mycelial growth inhibition of Alternaria alternata (77.20%) and Macrophomina spp. (82.43%) and being deadlier to Pestalotiopsis spp. (100%) and Fusarium solani (100%). Their comparative analysis showed that higher doses of Ageratina adenophora caused either more or almost equal pathogen growth inhibition than lower doses of Chlorothalonil for certain fungi. Thus, promoting eco-friendly disease management strategies such as botanical control would be beneficial in reducing the need for pesticides.


2021 ◽  
pp. 790-807
Author(s):  
Jhony José Arrieta-Guerra ◽  
Abelardo Tulio Díaz-Cabadiaz ◽  
Jazmín Vanessa Pérez-Pozos ◽  
Jorge Cadena-Torres ◽  
Diana Beatriz Sánchez-López

Introducción. La pudrición seca es una enfermedad que ha adquirido gran importancia en Colombia debido a que ocasiona la pérdida de los tubérculos del ñame (Dioscorea rotundata Poir.), tanto en campo como en almacenamiento, afecta los ingresos económicos y la productividad de los pequeños productores. Es escasa la información respecto a los agentes causales de esta enfermedad, por lo que no se tienen claras las estrategias para el manejo de esta problemática. Objetivo. Identificar y caracterizar hongos asociados a la pudrición seca de tubérculos de ñame. Materiales y métodos. Esta investigación se realizó entre marzo y octubre del año 2019, en la zona costanera del departamento de Córdoba en el Caribe colombiano. Se colectaron tubérculos de ñame en almacenamiento, debido a que los agricultores los conservan como semillas para próximas cosechas. En laboratorio se aislaron de las lesiones los hongos asociados, se caracterizaron y luego se identificaron a través de la amplificación de la región ITS (Internal Transcribed Spacer) del DNA ribosomal. Resultados. Se aislaron veintiocho crecimientos fúngicos asociados a la pudrición seca de los tubérculos del ñame, los cuales se agruparon en once morfotipos, de los cuales se identificaron diez especies, pertenecientes a nueve géneros fúngicos. Conclusión. Seis hongos podrían estar asociados a la pudrición seca de los tubérculos de ñame en la zona costanera de Colombia. Estos serían: Lasiodiplodia theobromae, Fusarium solani, Rhizopus oryzae, Neocosmospora rubicola, Neoscytalidium dimidiatum y Curvularia aeria.  


2021 ◽  
pp. 100839
Author(s):  
Xiaotian Zuo ◽  
Wei Xu ◽  
Shiping Wei ◽  
Hans-Peter Grossart ◽  
Yuanhao Gao ◽  
...  

2021 ◽  
pp. 104774
Author(s):  
J.G. Erazo ◽  
S.A. Palacios ◽  
N. Pastor ◽  
F.D. Giordano ◽  
M. Rovera ◽  
...  

2021 ◽  
Vol 34 (3) ◽  
pp. 605-613
Author(s):  
LEANDRO DE SOUZA ROCHA ◽  
ADELICA APARECIDA XAVIER ◽  
REGINA CÁSSIA FERREIRA RIBEIRO

ABSTRACT The interaction between Meloidogyne and Fusarium can alter the resistance behavior of passion fruit genotypes. The study was aimed to evaluate the reaction of genotypes of Passiflora spp. to Meloidogyne incognita race 3 (Mi)-Fusarium solani (Fs) complex. The assay was carried using RBD in the factorial arrangement: 10 genotypes (BRS-SC, M-19-UFV, P. alata, P. nitida, P. giberti, P.setacea, P. mucronata, P. murifolia, P. cincinnata, P. ligularis) x 3 treatments (Mi, Mi+Fs, Fs). After 180 days of planting the reaction to Mi was determined by RF (Pi/Pf) and to Fs by lesions size in roots and stems. According to the criteria of Oostenbrink and Moura and Regis, BRS-SC, M-19-UFV. P. alata and P. cincinnata behaved as resistant and P. giberti as susceptible. According to the Taylor and Sasser, BRS-SC, M-19-UFV, P. alata, P. cincinnata and P. giberti behaved as resistant, moderately resistant, moderately suscetible and susceptible, respectively. Lower percentage of plants with symtoms of Fs was found in P. mucronata, P. nitida, P. setacea, P. cincinnata and M-19-UFV In the presence of both pathogens, M-19-UFV, P. alata and P. nitida were those with larger lesion. In the presence de Fs, BRS-SC, P. alata, P. cincinnata and P. ligularis showed the largest lesions.


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