Botryosphaeria dieback is one of the most prevalent grapevine trunk diseases (GTDs), and caused by fungi in Botryosphaeriaceae. Fungi invade vascular systems mainly through pruning wounds, cause cankers necrotic lesions, which lead to decline death. Lasiodiplodia theobromae has been reported as a highly virulent pathogen grapevine, was previously Mexican vineyards. The taxonomy recently revised...

Phoma stem canker is a damaging disease of oilseed rape (Brassica napus) that causes annual yield losses to UK growers worth approximately £100 million, despite the use fungicides. In UK, sown in August/September and harvested following July. The epidemics are initiated by ascospores released from Leptosphaeria spp. pseudothecia (ascocarps) on stubble autumn/winter. Control this reliant cultiva...

In autumn 2020 cankers and branch dieback (Figure 1) were found in a five-year-old gene bank plantation of Castanea sativa Wicklow, Ireland. The planting material had been imported as grafted saplings from the United Kingdom. Isolations made by surface sterilising outer bark near with 70% ethanol. Pieces (5 × 5 5mm) woody removed soaked 2% NaOCl for one minute, followed two one-minute distilled...

The recovery of chestnut from chestnut blight in Italy and Michigan largely was responsible for the resurgence in chestnut research. The observed remission of disease now has been attributed to a biological control process called hypovirulence, whereby virulent strains are debilitated as a result of infection by fungal viruses (hypoviruses). Several species of hypoviruses now are known and each...

The pitch canker pathogen Fusarium circinatum has caused devastation to Pinus spp. in natural forests and non-natives in commercially managed plantations. This has drawn attention to the potential importance of Fusarium species as pathogens of forest trees. In this study, we explored the diversity of Fusarium species associated with diseased Pinus patula, P. tecunumanii, P. kesiya and P. maximi...

The genus Septoria includes important plant pathogens with worldwide distribution, commonly associated with leaf spots and stem cankers of a broad range of plant hosts. In this study, eight isolates of Septoria were recovered from leaves with leaf spot on four herbaceous and woody plants from Gilan, Ardebil, East and West Azerbaijan provinces in north and northwest of Iran. The isolates were st...

Trees in the genus Populus and their interspecific hybrids are used across North America for fiber production and as a potential source of biofuel. Plantations of these species are severely impacted by a fungal pathogen, Sphaerulina musiva, the cause of leaf spot and stem canker. An inoculation protocol that does not rely on stem wounding to achieve infection was recently developed. Using this ...