School of Agriculture and Environment and the UWA Institute of Agriculture, The University of Western Australia, Crawley, Western Australia 6009, Australia.
Debre Birhan Agricultural Research Centre, Debre Birhan, Ethiopia.
Plant Dis. 2022 Sep;106(9):2299-2303. doi: 10.1094/PDIS-11-21-2576-RE. Epub 2022 Aug 4.
Recent morphological and molecular studies confirmed , and not , to be the causative agent of the devastating Faba Bean Gall (FBG) disease on faba bean () in Ethiopia and also highlighted its ability to cross-infect with other host genera such as and . In this study, the first pair of specific primer 'Physo 1' and primer pair 'Physo D' are reported from molecular sequences of this pathogen from the conserved LSU (S28) gene. Whereas 'Physo 1' readily detects , 'Physo D', clearly separates its identity from the common and confounding presence of spp. The study also reports the presence of the Ascochyta blight pathogen complex, symptomless but almost universal on field pea (), within faba bean infested by We emphasize historical evidence confirming such unique association in other legumes, such as the subterranean clover (). This new finding has significant implications for rotations involving different legume crop and/or forage legume genera and possibly provides the first explanation for the widespread occurrence of the field pea Ascochyta blight pathogen complex even in the absence of field pea cropping for many years.
最近的形态学和分子研究证实，而不是引起埃塞俄比亚严重蚕豆瘤（FBG）疾病的原因，并且还强调了它能够与其他宿主属交叉感染，如和。在这项研究中，从该病原体保守 LSU（S28）基因的分子序列中报告了第一对特异性引物'Physo 1'和引物对'Physo D'。虽然'Physo 1'很容易检测到，但'Physo D'清楚地将其身份与常见的和混淆的存在区分开来。该研究还报告了在受感染的蚕豆中存在无症状但几乎普遍存在的豌豆炭疽病病原体复合体，豌豆（）。我们强调了在其他豆科植物中确认这种独特关联的历史证据，例如地下三叶草（）。这一新发现对涉及不同豆科作物和/或饲料豆科属的轮作具有重要意义，并且可能为多年来即使没有种植豌豆，豌豆炭疽病病原体复合体广泛发生提供了第一个解释。
