Pollaccia borealis sp.nov. associated with a purple-brown leaf spot of aspen

1989 ◽  
Vol 67 (3) ◽  
pp. 776-778 ◽  
Author(s):  
A. Funk
Keyword(s):  
British Columbia ◽  
Populus Tremuloides ◽  
Leaf Spot ◽  
Yukon Territory ◽  
Malt Agar ◽  
Leaf Spot Disease ◽  
Spot Disease ◽  
Brown Leaf Spot ◽  
Brown Leaf

Pollaccia borealis sp.nov. is described from a purple-brown leaf spot disease of aspen (Populus tremuloides Michx.) in northern British Columbia and the Yukon Territory, Canada. Conidia were produced on malt agar at temperatures of 20–23 °C.

scholarly journals First Report of Alternaria Alternata Causing Brown Leaf Spot on Apricot (Prunus Armeniaca) in Karbala Province of Iraq

2021 ◽  
Vol 910 (1) ◽  
pp. 012080
Author(s):  
Zeinab L. Hameed ◽  
Adnan A. Lahuf ◽  
Mundher T. Jasim ◽  
Hassan M. Mohsen ◽  
Bahaa J. Kadim ◽  
...  
Keyword(s):  
Alternaria Alternata ◽  
Leaf Spot ◽  
Causative Factor ◽  
Prunus Armeniaca ◽  
Leaf Spot Disease ◽  
First Report ◽  
Spot Disease ◽  
Brown Leaf Spot ◽  
Rdna Sequencing ◽  
Brown Leaf

Abstract During a survey in season 018, leaf spot symptoms were commonly observed on apricot (Prunus armeniaca) trees in the orchards of Al-Hussainiya district in Karbala Province of Iraq. The symptomatic leaves were gathered, the associated fungus was isolated and characterized relied on its morphological features and ITS-rDNA sequencing. The causative factor was found to be the fungus Alternaria alternata that caused distinguishable leaf spot symptoms on the inoculated leaves of apricot. Based on a review of previous references relatedof this disease in Iraq, this is the first report of the brown leaf spot disease caused by A. alternata in Karbala province of Iraq.

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