How is tomato yellow leaf curl virus transmitted?
How is tomato yellow leaf curl virus transmitted?
Tomato yellow leaf curl virus (TYLCV) is a tomato (Solanum lycopersicum)-infecting plant virus transmitted by whitefly Bemisia tabaci1,2. It belongs to the genus Begomovirus of the family Geminiviridae and has a single-stranded circular DNA genome of about 2.8 kb encapsidated in a twinned icosahedral virion3.
What causes tomato leaves to curl up?
High winds, blowing dust and low humidity can damage the leaves and stems on tomato plants. Heat and low moisture can cause the edges of the tomato leaves to die back, then twist and curl. This is a self- defense response, where leaves and leaflets curl slightly to prevent further water loss (Fig. 6).
Can you water tomatoes too much?
Too Much Water Watering your tomato plants properly is the key to tomato success. Too much water and the plants drown—too little could cause blossom end rot. Inconsistent watering can also cause blossom end rot, split tomatoes, and stressed plants. Add water if the soil feels dry to the touch at your fingertip.
What is leaf curl disease?
Peach leaf curl, also known as leaf curl, is a disease caused by the fungus Taphrina deformans. Peach leaf curl affects the blossoms, fruit, leaves, and shoots of peaches, ornamental flowering peaches, and nectarines, and is one of the most common disease problems for backyard gardeners growing these trees.
What are the symptoms of TYLCV on tomato plants?
TYLCV caused a range of symptoms that include marginal leaf yellowing, upward or downward leaf cupping, reduction in leaf size, flower and/or fruit drop, and plant stunting.
What kind of plants are infected with TYLCV?
Beans (Phaseolus vulgaris) are also hosts of TYLCV and show severe symptom s after infection by whiteflies. The virus has been reported from non-solanaceous plants like sesame (Sesamum indicum), asthma weed (Euphorbia geniculata ), fleabane ( Conyza stricta) and oxalis (Oxalis corniculata and O. acetosella).
Which is the most damaging host for TYLCV?
Although TYLCV has a broad host range, it is primarily known as one of the most damaging viruses to infect tomatoes. Beans (Phaseolus vulgaris) are also hosts of TYLCV and show severe symptom s after infection by whiteflies.
What is the isolate level for TYLCV Iran?
Some strain (TYLCV-Iran; TYLCV-Gezira) and isolate descriptors (TYLCV- [Israel:Rehovot:1986]) are added to the name. The descriptor of the strain level is written before the square brackets, while the isolate descriptors are between brackets and are composed of the country, the location and the year of sampling, when available.