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Peach leaf curl is a plant disease characterized by distortion and coloration of leaves and is caused by the fungus Taphrina deformans, [1] which infects peach, nectarine, and almond trees. T. deformans is found in the United States , Europe , Asia , Africa , Australia , and New Zealand . [ 2 ]
Curly top of common bean caused by Beet curly top virus. Curly top [1] is a viral disease that affects many crops. This disease causes plants to become smaller in size, have shriveled petals and leaves, and are twisted and pulled out of shape.
Papaya leaf curl virus (PaLCuV) is a DNA virus from the genus Begomovirus and the family Geminiviridae. PaLCuV causes severe disease in papaya ( Carica papaya ), but can sometimes infect other crops such as tobacco or tomato . [ 1 ]
Taphrina deformans is a fungus and plant pathogen, and a causal agent[s] of peach leaf curl. [1] Peach trees infected with T. deformans will experience leaf puckering and distortion, acquiring a characteristic downward and inward curl. Leaves will also undergo chlorosis, turning a pale green or yellow, and later show a red or purple tint. [2]
Beet curly top virus (BCTV) is a pathogenic plant virus of the family Geminiviridae, containing a single-stranded DNA. [3] The family Geminiviridae consists of nine genera (Becurtovirus, Begomovirus, Capulavirus, Curtovirus, Eragrovirus, Grablovirus, Mastrevirus, Topocuvirus, Turncurtovirus) [4] based on their host range, virus genome structure, and type of insect vector. [5]
Tomato yellow leaf curl virus (TYLCV) is a DNA virus from the genus Begomovirus and the family Geminiviridae.TYLCV causes the most destructive disease of tomato, and it can be found in tropical and subtropical regions causing severe economic losses.
Chilli leaf curl virus (ChiLCV) is a DNA virus from the genus Begomovirus and the family Geminiviridae. ChiLCV causes severe disease especially in pepper ( Capsicum spp. ), but also affects other crops such as tomato ( Solanum lycopersicum ). [ 1 ]
The disease has also been found in Costa Rica's Central Valley where it is referred to as ‘crespera’ disease by coffee growers. [32] Symptoms of the bacterial infection in coffee plants feature curling leaf margins, chlorosis and irregularly shaped leaves, stunting and reduced plant growth, and branch atrophy. [32]