leaves.Grosso modo, two scenarios are conceivable. In the first, replication-active viral RF molecules are ingested during feeding (together with plant replicases) and the dsDNA continues a few cycles of replication/transcription in insect nuclei with the help of ingested plant enzymes. In the...
In 2017 in Kenya, we collected leaves from tomato plants with leaf curling. The leaves were infected with a begomovirus that was most similar to tomato leaf curl Uganda virus (ToLCUV-[UG:Iga:05]). Neither DNA-B nor satellite DNAs were detected. Recombination analyses indicated the virus ...
size reduction in the terminal leaves, curling of lower leaves, and blistering and leathering, as well as plant stunting. Moreover, flower abscission and poor bearing can be observed. The severity of foliar symptoms and reduction in yield depend on the age at which plants are infected. TYL...
Curling tomato plant leaves Leaves that curl or twist may indicate pest infestations, such as aphids or whiteflies, which can cause distortion by feeding on the plant’s sap. Other causes of curling tomato plant leaves are heat stress, and watering issues (both under-watering and over-watering)...
2022). TYLCV is a monopartite begomovirus and one of the most devastating plant pathogens worldwide. The symptoms of TYLCV in infected tomato plants include yellowing, chlorosis and leaf curling of young leaves, stunted growth, and marked reduction of leaf size (Fig. 1a, b), which causes up...
Fruits were harvested from each prepared tomato plant and seeds were collected from tomato fruits. (B) Tomato embryos of seeds collected from tomato fruits and cotyledons and true leaves from seeds. (C) PCR analysis with symptomatic leaves, floral tissues (petal, stamen and pistil), fruits, ...
leaves; 2 = some yellowing and curling of apical leaves; 3 = strong yellowing and curling across a wide area of the inoculated plant, and slowed, but not arrested, growth; 4 = severe stunting, yellowing and curling, and plant growth ceased. Intermediate scores (e.g., 0.5 ...
Geminiviruses are DNA plant viruses that cause highly damaging diseases affecting crops worldwide. During the infection, geminiviruses hijack cellular processes, suppress plant defenses, and cause a massive reprogramming of the infected cells leading to
P. (2008b): Molecular detection and identification of Tomato leaf curl New Delhi virus associated with yellow mosaic and leaf curling disease of Luffa cylindrica crops in India. Indian J. of Plant Pathology 28, 1-6.Tiwari AK, Snehi SK, Khan MS, Raj SK, Sharma PK, Rao GP (2012a). ...
170. On this plant, the leaflets are very chlorotic and their upward pointing leaves give them a spoon-shaped appearance. Subsequently the leaflets often develop a firmer texture and a blue tinge on the veins and surrounding tissues visible on the underside of the leaf (Photo 171). Sign in...