Since late 2013, severe infestations of grain sorghum (Sorghum bicolor) by Melanaphis sacchari were observed in several southern states (Arkansas, Louisiana, Mississippi, Oklahoma and Texas) and also more recently in southern Florida, USA. In summer 2015, numerous aphids (>100 individuals per...

Scarlet aubergine (Solanum aethiopicum; also known as Ethiopian nightshade or Brazilian aubergine) originated in sub-Saharan Africa and is now grown in many parts of the world as a food, medicinal or ornamental crop, as well as for use as a rootstock for tomato and common aubergine (Solanum...

Diseases caused by Tobacco streak virus (TSV) have resulted in significant crop losses in sunflower and mung bean crops in Australia. Two genetically distinct strains from central Queensland, TSV-parthenium and TSV-crownbeard, have been previously described. They share only 81% total-genome...

Through graft inoculation and psyllid transmission experiments, the Cochin China atalantia (Atalantia citroides) was found to be a new alternative host of the fastidious bacterium (Candidatus Liberibacter asiaticus=Las) causing citrus Huanglongbing (HLB). The Las pathogen is commonly transmitted by ...

Maize redness (MR), caused by stolbur phytoplasma (16SrXII-A, 'Candidatus Phytoplasma solani') and vectored by the cixiid planthopper Reptalus panzeri, is a severe and emerging disease of maize in southeastern Europe. Symptoms of MR include midrib, leaf, and stalk reddening, followed by desiccation ...

Huanglongbing (HLB) is an unculturable vascular citrus pathogen transmitted from infected to healthy plants through grafting or by citrus psyllids, Diaphorina citri mainly in Asia and America and Trioza erytreae in Africa. Following the outbreak in the United States and the Caribbean, and also...

Cotton leaf curl virus (CLCuV) disease is crucial threat for cotton production in Pakistan. CLCuV belongs to genus Begomovirus of Geminiviridae family and is transmitted by Bemisia tabaci. Drastic reduction in yield was observed during 1994-95 and 2007-08 due to this disease. However in 1996-1997...

Eggplant mottled dwarf virus (EMDV, genus Nucleorhabdovirus, family Rhabdoviridae) is transmitted in nature by leafhoppers and its natural host range includes vegetable crops (eggplant, tomato, potato, pepper), ornamentals (pittosporum, honeysuckle, pelargonium) and wild plants (caper, Solanum...

The Asian citrus psyllid (ACP), Diaphorina citri (the vector of Candidatus Liberibacter asiaticus and Candidatus L. americanus, causing citrus Huanglongbing), was detected in California, USA, in August of 2008 and has since been detected in 9 counties in southern California. ACP adults were...

Huanglongbing (HLB) has been previously reported in southern Iran. In the present study, additional information is given on the distribution of HLB agent and its vector. The psyllid Diaphorina citri, vector of 'Candidatus Liberibactor asiaticus' was found in all surveyed citrus growing areas of...