Seedborne Pathogenic Fungi that Affect Seedling Quality of Red Angico (Anadenanthera macrocarpa) Trees in Brazil

2002 ◽  
Vol 150 (8-9) ◽  
pp. 451-455 ◽  
Author(s):  
O. D. Dhingra ◽  
C. B. Maia ◽  
D. C. Lustosa ◽  
J. B. Mesquita
Keyword(s):  
Pathogenic Fungi ◽  
Seedling Quality

scholarly journals Effect of fungal incidence on physiological quality of tobacco seeds used in Brazil

2018 ◽  
Vol 85 (0) ◽  
Author(s):  
Mariane Sayuri Ishizuka ◽  
Maria Heloisa Duarte de Moraes ◽  
Maria Helena Carmignani Pescarin Chamma ◽  
Carlos Eduardo Pulcinelli ◽  
José Otavio Machado Menten
Keyword(s):  
Seed Treatment ◽  
Pathogenic Fungi ◽  
Test Results ◽  
Fusarium Spp ◽  
Germination Test ◽  
Tobacco Seed ◽  
Tobacco Seeds ◽  
Physiological Quality ◽  
Seeds Germination

ABSTRACT: The objectives of the present project were to evaluate the sanity and germination of tobacco seed samples cultivated in Brazil and to identify potential pathogenic fungi to the culture. Thirty-four representatives samples of tobacco seeds were evaluated through germination and sanity test by the blotter-test. On the germination test, results were expressed in percentage of seedlings considered normal, abnormal and non-germinated seeds. The percentage of seeds germination varied between 54.5 and 90%. According to sanity test, it was verified the incidence of Alternaria alternata, Cladosporium spp., Fusarium spp., and Phoma spp. The incidence of A. alternata varied from 3 to 67%, and Fusarium spp. varied from 0 to 19%. There was significative positive correlation between the incidence of A. alternata and the percentage of seed germination. Species of Alternaria and Fusarium can be potential pathogens to tobacco culture and an alarm for the necessity of seed treatment of the seeds that are transporting these fungi.

scholarly journals Fungal Pathogens Affecting the Production and Quality of Medical Cannabis in Israel

Plants ◽  
2020 ◽  
Vol 9 (7) ◽  
pp. 882
Author(s):  
Shachar Jerushalmi ◽  
Marcel Maymon ◽  
Aviv Dombrovsky ◽  
Stanley Freeman
Keyword(s):  
Fungal Pathogens ◽  
Plant Pathogens ◽  
Pathogenic Fungi ◽  
Plant Diseases ◽  
Soilborne Pathogens ◽  
Medical Cannabis ◽  
Plant Parts ◽  
Commercial Cultivation

The use of and research on medical cannabis (MC) is becoming more common, yet there are still many challenges regarding plant diseases of this crop. For example, there is a lack of formal and professional knowledge regarding fungi that infect MC plants, and practical and effective methods for managing the casual agents of disease are limited. The purpose of this study was to identify foliar, stem, and soilborne pathogens affecting MC under commercial cultivation in Israel. The predominant major foliage pathogens were identified as Alternaria alternata and Botrytis cinerea, while the common stem and soilborne pathogens were identified as Fusarium oxysporum and F. solani. Other important fungi that were isolated from foliage were those producing various mycotoxins that can directly harm patients, such as Aspergillus spp. and Penicillium spp. The sampling and characterization of potential pathogenic fungi were conducted from infected MC plant parts that exhibited various disease symptoms. Koch postulates were conducted by inoculating healthy MC tissues and intact plants with fungi isolated from infected commercially cultivated symptomatic plants. In this study, we report on the major and most common plant pathogens of MC found in Israel, and determine the seasonal outbreak of each fungus.

scholarly journals Substrates, emergence and seedling quality of Hymenaea stigonocarpa Mart. (Jatoba) in protected cultivation

2018 ◽  
pp. 615-622
Author(s):  
Léia Carla dos Santos Rodrigues Larson ◽  
Aparecida Conceição Boliani ◽  
Tiago Lima do Espírito Santo ◽  
Paulo Eduardo Teodoro ◽  
Edilson Costa
Keyword(s):  
Seedling Quality ◽  
Protected Cultivation

scholarly journals Marine-Derived Compounds and Prospects for Their Antifungal Application

Molecules ◽  
2020 ◽  
Vol 25 (24) ◽  
pp. 5856
Author(s):  
Joana Cardoso ◽  
Darlan Gonçalves Nakayama ◽  
Emília Sousa ◽  
Eugénia Pinto
Keyword(s):  
Biofilm Formation ◽  
Antifungal Agents ◽  
Fungal Infections ◽  
Pathogenic Fungi ◽  
Mechanisms Of Action ◽  
Antifungal Compounds ◽  
Recent Developments ◽  
Marine Products ◽  
New Strategies

The introduction of antifungals in clinical practice has an enormous impact on the provision of medical care, increasing the expectancy and quality of life mainly of immunocompromised patients. However, the emergence of pathogenic fungi that are resistant and multi-resistant to the existing antifungal therapy has culminated in fungal infections that are almost impossible to treat. Therefore, there is an urgent need to discover new strategies. The marine environment has proven to be a promising rich resource for the discovery and development of new antifungal compounds. Thus, this review summarizes more than one hundred marine natural products, or their derivatives, which are categorized according to their sources—sponges, bacteria, fungi, and sea cucumbers—as potential candidates as antifungal agents. In addition, this review focus on recent developments using marine antifungal compounds as new and effective approaches for the treatment of infections caused by resistant and multi-resistant pathogenic fungi and/or biofilm formation; other perspectives on antifungal marine products highlight new mechanisms of action, the combination of antifungal and non-antifungal agents, and the use of nanoparticles and anti-virulence therapy.

scholarly journals QUALIDADE DE MUDAS DE COPAÍBA PRODUZIDAS EM DIFERENTES SUBSTRATOS E NÍVEIS DE SOMBREAMENTO

FLORESTA ◽  
2015 ◽  
Vol 45 (3) ◽  
pp. 635 ◽  
Author(s):  
Tiago Reis Dutra ◽  
Paulo Henrique Grazziotti ◽  
Reynaldo Campos Santana ◽  
Marília Dutra Massad
Keyword(s):  
Quality Index ◽  
Block Design ◽  
Seedling Quality ◽  
Rice Hulls ◽  
Randomized Block Design ◽  
Copaifera Langsdorffii ◽  
Four Blocks

O presente trabalho teve como objetivo avaliar a influência de dois volumes de diferentes substratos e níveis de sombreamento sobre a qualidade de mudas de copaíba. O experimento foi conduzido por 130 dias em DBC casualizados no esquema fatorial 2 x 5, sendo avaliados dois volumes (180 e 280 cm³) dos substratos Bioplant®; 70% vermiculita + 30% casca de arroz carbonizada; 40% vermiculita + 30% casca de arroz carbonizada + 30% fibra de côco; 50% vermiculita + 30% casca de arroz carbonizada + 20% areia; e 70% vermiculita + 15% casca de arroz carbonizada + 15% vermicomposto. Essas dez combinações foram distribuídas aleatoriamente em quatro blocos com diferentes intensidades luminosas: 0, 30, 50 e 70% de sombreamento. O uso de 180 cm³ de substrato foi suficiente para produzir mudas de copaíba com bom desenvolvimento e índice de qualidade. Os substratos 70V+30CA, 40V+30CA+30FC, 50V+30CA+20A, 70V+15CA+15VC apresentaram-se superiores em relação ao Bioplant® para produção de mudas da espécie em estudo. Os resultados demonstraram que as mudas de copaíba comportaram-se de forma distinta em relação aos níveis de sombreamento avaliados, demonstrando possuírem grande plasticidade adaptativa.AbstractQuality of copaiba seedlings produced in two volumes of substrates and shading levels. This research aimed to evaluate the influence of two volumes of substrate and levels of shading on seedling quality of copaiba. The experiment was conducted for 130 days in a randomized block design in a 2 x 5 factorial scheme, we evaluated two volumes (180 e 280 cm³) of the five following substrates: Bioplant®, 70% vermiculite + 30% carbonized rice hulls, 40% vermiculite + 30% carbonized rice hulls + 30% coir, 50% vermiculite + 30% carbonized rice hulls + 20% sand and 70% vermiculite + 15% carbonized rice hulls + 15% vermicompost residue textiles. These ten combinations were randomly distributed in four blocks, accordingly to the following distinct brightness: 0, 30, 50 and 70 percentages of shading. The use of 180 cm³ substrate was enough to produce seedlings of copaiba with good development and quality index. The substrates 70V+30CA, 40V+30CA+30FC, 50V+30CA+20A, and 70V+15CA+15VC showed slight superiority over Bioplant® for seedlings of such species. The results revealed that the copaiba seedlings behaved differently in relation to shading levels evaluated, it demonstrates they have great adaptive plasticity.Keywords: Copaifera langsdorffii; production of seedlings; levels of brightness; containers.

Culling phenotypically inferior trees in seed production area enhances seed and seedling quality of Acacia auriculiformis

2011 ◽  
Vol 22 (1) ◽  
pp. 21-26 ◽  
Author(s):  
V. Sivakuma ◽  
B. Gurudevsingh ◽  
R. Anandalakshmi ◽  
R. R. Warrier ◽  
S. Sekaran ◽  
...  
Keyword(s):  
Seed Production ◽  
Seedling Quality ◽  
Acacia Auriculiformis ◽  
Production Area

scholarly journals Studies on the mycoflora of maize grain

2016 ◽  
Vol 5 (11) ◽  
pp. 1454
Author(s):  
Shaila Sakhala
Keyword(s):  
Fatty Acid ◽  
Moisture Content ◽  
Pathogenic Fungi ◽  
Important Food ◽  
Percent Germination ◽  
Maize Grain ◽  
Animal Diet ◽  
Locally Grown ◽  
Acid Reduction

Maize is an important food and fodder crop. Its grains are important for the production of starch, oil and glucose. It is an important component of both human and animal diet. During storage grains undergo quantitative and qualitative losses. A large number of pathogenic fungi, bacteria, viruses and insects affecting maize cause combined world annual losses of 9.4% (Shrutelff, et al., 1980). Fungi affect quality of grain through increase in fatty acid, reduction in germination and finally spoilage of grain. The importance of fungi is also due to production of toxin that cause health hazards in human and animals. In the present study two variety of maize N 2277 and S 2727 which are locally grown crop in our area were collected directly from the field. Mycoflora of maize was tested by using blotter method. Moisture content, percent germination was also studied. A total of 8 fungi were observed from the grain.

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