scholarly journals Pathogenic Fungi Diversity of ‘CuiXiang’ Kiwifruit Black Spot Disease during Storage

Horticulturae ◽  
2021 ◽  
Vol 8 (1) ◽  
pp. 13
Author(s):  
Yaming Yang ◽  
Lijuan Chen ◽  
Chenyu Wang ◽  
Honghui Peng ◽  
Weijie Yin ◽  
...  
Keyword(s):  
Cell Structure ◽  
Black Spot ◽  
Pathogenic Fungi ◽  
Its Sequencing ◽  
Cell Wall Modification ◽  
Essential Information ◽  
Spot Disease ◽  
Diaporthe Phaseolorum ◽  
Diseased Fruit ◽  
Black Spot Disease

Kiwifruit black spot disease has become increasingly widespread in many ‘CuiXiang’ kiwifruit plantings regions. This research was aimed at the pathogenic microorganisms of black spot of the ‘CuiXiang’ cultivar. Physiological, morphological and transcriptional characteristics between black spot fruit and healthy fruits were evaluated. Then, it applied a high-throughput internal transcribed spacer (ITS) sequencing to analyze the black spot disease microbial community. The cell structure showed that mycelium was attached to the surface of the kiwifruit through black spot, and that consequently the mitochondria were damaged, starch particles were reduced, and shelf life was shortened. Transcriptome revealed that different genes in kiwifruit with black spot disease were involved in cell wall modification, pathogen perception, and signal transduction. ITS sequencing results described the disease-causing fungi and found that the microbial diversity of black spot-diseased fruit was lower than that of healthy fruit. We predict that candidate pathogenic fungi Cladosporium cladosporioides, Diaporthe phaseolorum, Alternaria alternata, and Trichothecium roseum may cause black spot. This study was to explore the pathogenic fungal community of ‘CuiXiang’ kiwifruit black spot disease and to provide essential information for field prevention.

scholarly journals Temporal and Spatial Changes in the Pea Black Spot Disease Complex in Western Australia

Plant Disease ◽  
2014 ◽  
Vol 98 (6) ◽  
pp. 790-796 ◽  
Author(s):  
Hieu Sy Tran ◽  
Yu Pin Li ◽  
Ming Pei You ◽  
Tanveer N. Khan ◽  
Ian Pritchard ◽  
...  
Keyword(s):  
Western Australia ◽  
Host Resistance ◽  
Ascochyta Blight ◽  
Black Spot ◽  
Geographic Location ◽  
Pathogenic Fungi ◽  
Spot Disease ◽  
Disease Complex ◽  
Didymella Pinodes ◽  
Black Spot Disease

Black spot (also referred to as Ascochyta blight, Ascochyta foot rot and black stem, and Ascochyta leaf and pod spot) is a devastating disease of pea (Pisum sativum) caused by one or more pathogenic fungi, including Didymella pinodes, Ascochyta pisi, and Phoma pinodella. Surveys were conducted across pea-growing regions of Western Australia in 1984, 1987, 1989, 1996, 2010, and 2012. In total, 1,872 fungal isolates were collected in association with pea black spot disease symptoms. Internal transcribed spacer regions from representative isolates, chosen based on morphology, were sequenced to aid in identification. In most years and locations, D. pinodes was the predominant pathogen in the black spot complex. From 1984 to 2012, four new pathogens associated with black spot symptoms on leaves or stems (P. koolunga, P. herbarum, Boeremia exigua var. exigua, and P. glomerata) were confirmed. This study is the first to confirm P. koolunga in association with pea black spot symptoms in field pea in Western Australia and show that, by 2012, it was widely present in new regions. In 2012, P. koolunga was more prevalent than D. pinodes in Northam and P. pinodella in Esperance. P. herbarum and B. exigua var. exigua were only recorded in 2010. Although A. pisi was reported in Western Australia in 1912 and again in 1968 and is commonly associated with pea black spot in other states of Australia and elsewhere, it was not recorded in Western Australia from 1984 to 2012. It is clear that the pathogen population associated with the pea black spot complex in Western Australia has been dynamic across time and geographic location. This poses a particular challenge to development of effective resistance against the black spot complex, because breeding programs are focused almost exclusively on resistance to D. pinodes, largely ignoring other major pathogens in the disease complex. Furthermore, development and deployment of effective host resistance or fungicides against just one or two of the pathogens in the disease complex could radically shift the make-up of the population toward pathogen species that are least challenged by the host resistance or fungicides, creating an evolving black spot complex that remains ahead of breeding and other management efforts.

scholarly journals Survey and Pathogenicity of Black Spot Disease of Rose in Pakistan

2016 ◽  
Vol 03 (04) ◽  
Author(s):  
Yasin NA ◽  
Ahmed S ◽  
Khan WU ◽  
Ashraf Y
Keyword(s):  
Black Spot ◽  
Spot Disease ◽  
Black Spot Disease

scholarly journals Selection of Mutant Japanese Pears Resistant to Black Spot Disease by Acute Irradiation of Gamma-rays

1994 ◽  
Vol 62 (4) ◽  
pp. 701-706 ◽  
Author(s):  
Kenji Murata ◽  
Kenichi Kitagawa ◽  
Testuo Masuda ◽  
Kosuke Inoue ◽  
Kazuo Kotobuki ◽  
...  
Keyword(s):  
Gamma Rays ◽  
Black Spot ◽  
Spot Disease ◽  
Acute Irradiation ◽  
Selection Of ◽  
Black Spot Disease

Black spot disease ofLentinula edodescaused by theHyphozymasynanamorph ofEleutheromyces subulatus

Mycologia ◽  
1997 ◽  
Vol 89 (6) ◽  
pp. 867-875 ◽  
Author(s):  
Akihiko Tsuneda ◽  
Shigeyuki Murakami ◽  
Warwick M. Gill ◽  
Nitaro Maekawa
Keyword(s):  
Black Spot ◽  
Spot Disease ◽  
Black Spot Disease

In vivo testing of antagonistic fungi against Alternaria brassicicola causing Chinese kale black spot disease

2020 ◽  
Author(s):  
Atima Komhorm ◽  
Suttipong Thongmee ◽  
Todsawat Thammakun ◽  
Thanaprasong Oiuphisittraiwat ◽  
Arom Jantasorn
Keyword(s):  
Black Spot ◽  
Alternaria Brassicicola ◽  
Spot Disease ◽  
Antagonistic Fungi ◽  
Chinese Kale ◽  
In Vivo Testing ◽  
Black Spot Disease

Genetic mapping of genes for susceptibility to black spot disease in Japanese pears

Genome ◽  
2007 ◽  
Vol 50 (8) ◽  
pp. 735-741 ◽  
Author(s):  
S. Terakami ◽  
Y. Adachi ◽  
H. Iketani ◽  
Y. Sato ◽  
Y. Sawamura ◽  
...  
Keyword(s):  
Black Spot ◽  
Japanese Pear ◽  
Pyrus Pyrifolia ◽  
Breeding Programs ◽  
Spot Disease ◽  
Genome Scanning ◽  
A Genome ◽  
Susceptibility And Resistance ◽  
Different Sources ◽  
Black Spot Disease

Black spot disease, which is caused by the Japanese pear pathotype of Alternaria alternata (Fr.) Keissler, is one of the most harmful diseases in Japanese pear cultivation. We identified the exact positions and linkage groups (LGs) of the genes for susceptibility to black spot in the Japanese pear ( Pyrus pyrifolia Nakai) cultivars ‘Osa Nijisseiki’ (gene Ani) and ‘Nansui’ (gene Ana). Segregation of susceptibility and resistance fitted the expected ratio of 1:1 in progeny of ‘Nansui’ but showed a slight distortion in progeny of ‘Osa Nijisseiki’. We mapped the genes for susceptibility to black spot in both populations using a genome scanning approach. The simple sequence repeat (SSR) markers CH04h02 and CH03d02 showed tight linkage to Ani and Ana. Although Ani and Ana are derived from different sources, both genes are located at the top region of LG 11. Information about the positions of the susceptibility genes and the molecular markers linked to them will be useful for marker-assisted selection in pear breeding programs.

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