Elshahawy Ibrahim E, Darwesh Osama M
Plant Pathology Department, National Research Centre, Cairo, 12622, Egypt.
Agricultural Microbiology Department, National Research Centre, Cairo, 12622, Egypt.
Heliyon. 2023 Mar 11;9(3):e14444. doi: 10.1016/j.heliyon.2023.e14444. eCollection 2023 Mar.
In Egypt, (lucky bamboo) is an ornamental plant imported from several countries. Two weeks after they arrived at the nurseries, anthracnose indications were detected on the shoots of imported samples. Four spp. isolates were obtained from the symptomatic lucky bamboo plants. The obtained isolates belonged to the species of or based on their morphological characteristics and molecular biology analyses. Pathogenicity tests reveal that isolate 4 was found to be more pathogenic than the other isolates. The investigation was conducted with the objectives of evaluating six systemic fungicides for their inhibitory effect against . Data reveal that, thiophanate-methyl and difenoconazole + azoxytrobin at ≥15 ppm completely inhibited the pathogen growth. Tebuconazole and flusllazole inhibited growth completely at ≥20 ppm, whereas iprodione and cyprodinil + fludioxonil had a lower effect (56.6 and 54.4% reduction, respectively) at this dose. The investigation was conducted with the objectives of evaluating the preventive and curative effects of the most effective fungicides against anthracnose disease. Lucky bamboo plants were treated with fungicide and either inoculated or not with before being left for 25 or 60 days. On both insidiously infected and vaccinated lucky bamboo plants, the combination of difenoconazole, azoxytrobin, and thiophanate-methyl at 20 ppm greatly reduced the development of anthracnose. Tebuconazole and flusllazole were found to be phytotoxic.
在埃及，（幸运竹）是一种从多个国家进口的观赏植物。它们抵达苗圃两周后，在进口样本的嫩枝上检测到炭疽病迹象。从有症状的幸运竹植株上获得了4种菌株分离物。根据其形态特征和分子生物学分析，所获得的分离物属于或种。致病性测试表明，分离物4比其他分离物更具致病性。开展该调查的目的是评估六种内吸性杀菌剂对的抑制作用。数据显示，甲基托布津以及≥15 ppm的苯醚甲环唑+嘧菌酯可完全抑制病原菌生长。戊唑醇和氟硅唑在≥20 ppm时可完全抑制生长，而在该剂量下，异菌脲以及嘧菌环胺+咯菌腈的效果较差（分别降低56.6%和54.4%）。开展该调查的目的是评估最有效的杀菌剂对炭疽病的预防和治疗效果。幸运竹植株用杀菌剂处理，在接种或未接种后放置25或60天。对于潜伏感染和接种疫苗的幸运竹植株，20 ppm的苯醚甲环唑、嘧菌酯和甲基托布津组合可大大减少炭疽病的发生。发现戊唑醇和氟硅唑具有植物毒性。
