Anthracnose disease of centipedegrass turf caused by Colletotrichum eremochloae, a new fungal species closely related to Colletotrichum sublineola

Mycologia ◽  
2012 ◽  
Vol 104 (5) ◽  
pp. 1085-1096 ◽  
Author(s):  
J. A. Crouch ◽  
M. Tomaso-Peterson
Keyword(s):  
Fungal Species ◽  
Anthracnose Disease

scholarly journals Persimmon anthracnose: a comparative study of aggressiveness on shoot and fruit among Colletotrichum horii isolates in southern Brazil

2020 ◽  
Vol 50 (10) ◽  
Author(s):  
Renato Rezende Young Blood ◽  
Thiago de Aguiar Carraro ◽  
Josiane Gomes Figueiredo ◽  
Louise Larissa May De Mio
Keyword(s):  
Severe Disease ◽  
Its Region ◽  
Field Studies ◽  
Fungal Species ◽  
Metropolitan Region ◽  
Disease Symptoms ◽  
Immature Fruit ◽  
Anthracnose Disease ◽  
Persimmon Fruit ◽  
Fruit Drop

ABSTRACT: The persimmon tree is known for its rusticity and productivity and was first introduced to Brazil in the late 19th century. However, anthracnose disease is causing immature fruit drop and severe disease symptoms in persimmon fruit, shoots, flowers, and twigs. The causal agent was first described as the fungal species, Colletotrichum horii, which was first confirmed using only the ITS region. In this study, we compared the aggressiveness of 13 isolates of Colletotrichum spp. obtained from fruit and shoots of persimmon grown in the Metropolitan Region of Curitiba, Paraná State, Brazil. A multilocus molecular analysis was carried out based on ITS, GPDH, and EF genes, and we confirmed that the isolates were confirmed as C. horii. All isolates were pathogenic for unwounded and wounded persimmon fruit but differed in aggressiveness. Only one isolate was non-pathogenic when inoculated into unwounded persimmon shoots. Most isolates caused cankers and shoot death whether shoots were wounded or unwounded. In this study, we emphasized the importance of shoots as a source of primary inoculum. In future studies, it will be critical to further elucidate the epidemiological basis of anthracnose disease by conducting field studies to establish a more effective strategy for disease control.

scholarly journals Host-induced silencing of the Colletotrichum gloeosporioides conidial morphology 1 gene (CgCOM1) confers resistance against Anthracnose disease in chilli and tomato

2020 ◽  
Author(s):  
Binod Kumar Mahto ◽  
Anjulata Singh ◽  
Manish Pareek ◽  
Manchikatla V. Rajam ◽  
Swatismita Dhar-Ray ◽  
...  
Keyword(s):  
Gene Expression ◽  
Pathogenic Fungi ◽  
Fungal Species ◽  
Wild Type ◽  
Rt Pcr ◽  
Stem Loop ◽  
Anthracnose Disease ◽  
Gene Expression Analyses ◽  
Transgenic Lines ◽  
Appressoria Formation

AbstractAnthracnose disease is caused by the ascomycetes fungal species Colletotrichum, which is responsible for heavy yield losses in chilli and tomato worldwide. Conventionally, harmful pesticides are used to contain anthracnose disease with limited success. In this study, we assessed the potential of Host-Induced Gene Silencing (HIGS) approach to target the Colletotrichum gloeosporioides COM1 (CgCOM1) developmental gene involved in the fungal conidial and appressorium formation, to restrict fungal infection in chilli and tomato fruits. For this study, we have developed stable transgenic lines of chilli and tomato expressing CgCOM1-RNAi construct employing Agrobacterium-mediated transformation. Transgenic plants were characterized by molecular and gene expression analyses. Production of specific CgCOM1 siRNA in transgenic chilli and tomato RNAi lines was confirmed by stem-loop RT-PCR. Fungal challenge assays on leaves and fruits showed that the transgenic lines were resistant to anthracnose disease-causing C. gloeosporioides in comparison to wild type and empty-vector control plants. RT-qPCR analyses in transgenic lines revealed barely any CgCOM1 transcripts in the C. gloeosporioides infected tissues, indicating near complete silencing of CgCOM1 gene expression in the pathogen. Microscopic examination of the Cg-challenged leaves of chilli-CgCOM1i lines revealed highly suppressed conidial germination, germ tube development, appressoria formation and mycelial growth of C. gloeosporioides, resulting in reduced infection of plant tissues. These results demonstrated highly efficient use of HIGS in silencing the expression of essential fungal developmental genes to inhibit the growth of pathogenic fungi, thus providing a highly precise approach to arrest the spread of disease.

Anthracnose disease of switchgrass caused by the novel fungal species Colletotrichum navitas

2009 ◽  
Vol 113 (12) ◽  
pp. 1411-1421 ◽  
Author(s):  
Jo Anne Crouch ◽  
Lisa A. Beirn ◽  
Laura M. Cortese ◽  
Stacy A. Bonos ◽  
Bruce B. Clarke
Keyword(s):  
Fungal Species ◽  
The Novel ◽  
Anthracnose Disease

De novo metabolite production through co-cultivation of different fungal species on solid media

Planta Medica ◽  
2016 ◽  
Vol 81 (S 01) ◽  
pp. S1-S381
Author(s):  
A Azzollini ◽  
JL Wolfender ◽  
K Gindro
Keyword(s):  
De Novo ◽  
Fungal Species ◽  
Metabolite Production ◽  
Solid Media

The pathogen of Milk Thistle (Silybum marianum (L.) Gaertn.) in the Czech Republic

2015 ◽  
Vol 5 (1) ◽  
pp. 538-544
Author(s):  
Ivana Safrankova ◽  
Kolackova P ◽  
Rutivckova G
Keyword(s):  
Czech Republic ◽  
Environmental Factors ◽  
Active Compound ◽  
Fungal Species ◽  
Medicinal Herb ◽  
Milk Thistle ◽  
Silybum Marianum ◽  
The Czech Republic

Milk thistle is grown in the Czech Republic as a medicinal herb; silymarin is isolated from its achenes and used for the production of liver and gallbladder medicine. The quality and content of the active compound is influenced not only by environmental factors, but also by pests and pathogens. The occurrence of pests of milk thistle variety Silyb was observed in two localities during the years 2011 2013. In the year 2011 the mycoflora of seeds of four milk thistle varieties was determined. Representatives of 15 species were isolated from the seeds, most of them saprophytic. 21 fungal species were isolated and identified from milk thistle plants during the vegetation; Septoria silybi among the most important ones. Possibilities of protection of milt thistle against pathogens are discussed.

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