Occurrence and characterization of Alternaria species associated with leaf spot disease in rapeseed in Serbia

2020 ◽  
Vol 69 (5) ◽  
pp. 883-900
Author(s):  
Jovana D. Blagojević ◽  
Jelena B. Vukojević ◽  
Žarko S. Ivanović
Keyword(s):  
Leaf Spot ◽  
Leaf Spot Disease ◽  
Spot Disease ◽  
Alternaria Species

scholarly journals Characterization of the common bean host and Pseudocercospora griseola, the causative agent of angular leaf spot disease in Tanzania

2016 ◽  
Vol 10 (11) ◽  
pp. 238-245 ◽  
Author(s):  
Amos Chilagane Luseko ◽  
Nchimbi-Msolla Susan ◽  
Mbogo Kusolwa Paul ◽  
Gabriel Porch Timothy ◽  
Miryam Serrato Diaz Luz ◽  
...  
Keyword(s):  
Common Bean ◽  
Causative Agent ◽  
Leaf Spot ◽  
Angular Leaf Spot ◽  
Leaf Spot Disease ◽  
Spot Disease ◽  
The Common ◽  
Pseudocercospora Griseola

Characterization of Exserohilum rostratum, a new causal agent of banana leaf spot disease in China

2011 ◽  
Vol 40 (3) ◽  
pp. 246-259 ◽  
Author(s):  
Shan-Hai Lin ◽  
Si-Liang Huang ◽  
Qi-Qin Li ◽  
Chun-Jin Hu ◽  
Gang Fu ◽  
...  
Keyword(s):  
Leaf Spot ◽  
Causal Agent ◽  
Leaf Spot Disease ◽  
Spot Disease ◽  
Exserohilum Rostratum ◽  
Banana Leaf

scholarly journals IN VIVO AND IN VITRO STUDIES ON MORPHOLOGICAL CHARACTERIZATION OF SEPTORIA LYCOPERSICI CAUSING LEAF SPOT DISEASE IN TOMATO

2021 ◽  
Vol 21 (no 1) ◽  
Author(s):  
Aabid . ◽  
Sabiha Ashraf ◽  
Hilal A. Malik ◽  
Rakshanda Zargar ◽  
Shaheena A. Nagoo ◽  
...  
Keyword(s):  
Leaf Spot ◽  
Morphological Characterization ◽  
Leaf Spot Disease ◽  
Potato Dextrose Agar Medium ◽  
Spot Disease ◽  
Spore Mass ◽  
Septoria Lycopersici

Septoria lycopersici responsible for Septoria leaf spot disease was observed on the leaves of tomato. Septoria lycopersici was isolated and completion of Koch’s postulates confirmed that the fungus was causal agent of the leaf spot disease. The fungus was cultured on potato dextrose agar medium. The fungus was very slow growing with 8-12 mm radial growth as recorded after 30 days of incubation. The fungus produced off white, irregular, hardened blackish mycelial growth oozing spore mass from pycnidia. Pycnidia were dark brown to black, globose to sub globose, ostiolated and thick walled. Pycnidiospores were filiform, straight with pointed to rounded ends.

scholarly journals Characterization of Alternaria Species Associated with Leaf Spot Disease of Armoracia rusticana in Serbia

Plant Disease ◽  
2020 ◽  
Vol 104 (5) ◽  
pp. 1378-1389
Author(s):  
Jovana Blagojević ◽  
Jelena Vukojević ◽  
Borko Ivanović ◽  
Žarko Ivanović
Keyword(s):  
Leaf Spot ◽  
Leaf Age ◽  
Distinct Species ◽  
Host Susceptibility ◽  
Leaf Spot Disease ◽  
Pathogenicity Test ◽  
Armoracia Rusticana ◽  
Spot Disease ◽  
Haplotype Networks ◽  
Alternaria Species

Leaf spot diseases caused by Alternaria species have been reported worldwide in plants in the Brassicaceae family. However, there is little information on Alternaria species causing diseases in horseradish. In the present study, 89 Alternaria spp. isolates from Armoracia rusticana, sampled from nine districts in Serbia, were characterized based on their morphology, physiology, and molecular markers. Morphological characterization and molecular analyses based on ITS, GAPDH, Alt a 1, and PM-ATP sequences identified three distinct species associated with the disease: Alternaria brassicae, A. brassicicola, and A. alternata. For all species, growth and sporulation rates at 0, 5, 10, 15, 20, 25, 30, 35, and 40°C showed a quadratic response, with A. alternata having the widest temperature optimum (20 to 30°C) while A. brassicicola had higher optimum temperatures (20 to 25°C) than A. brassicae (15 to 20°C). To gain a better understanding of the pathogenicity of these species, the influence of leaf age, host susceptibility, and ability to infect artificially wounded and nonwounded leaves were tested. The pathogenicity test identified A. brassicicola and A. brassicae as the main causal agents of horseradish leaf spot disease. Results indicated that young and intact leaves of horseradish and cabbage were less susceptible to infection and also suggested the potential for cross-infection between these two hosts. Haplotype networks showed haplotype uniformity for A. brassicae, two haplotype groups of A. brassicicola, and eight haplotype groups of A. alternata in Serbia and suggest the possible association of some haplotypes with the geographic area. This study is the first to investigate Alternaria leaf spot disease on A. rusticana in Serbia and is the first record of A. brassicicola on horseradish in this country.

scholarly journals Morphological and molecular characterization of Curvularia and related species associated with leaf spot disease of rice in Peninsular Malaysia

2015 ◽  
Vol 27 (2) ◽  
pp. 205-214 ◽  
Author(s):  
Nor Azizah Kusai ◽  
Madihah Mior Zakuan Azmi ◽  
Shahrizim Zulkifly ◽  
Mohd Termizi Yusof ◽  
Nur Ain Izzati Mohd Zainudin
Keyword(s):  
Molecular Characterization ◽  
Related Species ◽  
Leaf Spot ◽  
Peninsular Malaysia ◽  
Leaf Spot Disease ◽  
Spot Disease ◽  
Morphological And Molecular Characterization

Identification and Characterization of Paraphoma chrysanthemicola Causing Leaf Spot Disease on Atractylodes japonica in China

2015 ◽  
Vol 164 (6) ◽  
pp. 372-377 ◽  
Author(s):  
Xinxin Ge ◽  
Rujun Zhou ◽  
Yue Yuan ◽  
Haijiao Xu ◽  
Junfan Fu ◽  
...  
Keyword(s):  
Leaf Spot ◽  
Leaf Spot Disease ◽  
Spot Disease ◽  
Atractylodes Japonica ◽  
Identification And Characterization
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