Balodi Rekha, Raghavendra Kerur Vishwanath, Singh Praveen Kumar, Hussain Zakir, Suroshe Sachin Suresh, Kumar Pawan, Chander Subhash
ICAR-National Research Centre for Integrated Pest Management, New Delhi, 110068 India.
ICAR-Indian Agricultural Research Institute, ICAR-National Bureau of Plant Genetic Resources, New Delhi, 110 012 India.
3 Biotech. 2024 Oct;14(10):218. doi: 10.1007/s13205-024-04059-7. Epub 2024 Sep 2.
Severe incidence of spp. was observed in the three solanaceous vegetables viz. tomato, potato and brinjal grown in National Capital Region of Delhi and Haryana. The symptomatic plants exhibited necrotic brown lesions on the leaves initiating from the lower older leaves and extending to stem, affecting the whole plant. Subsequently, black sooty sporulation was observed in fruits of tomato and brinjal crop. During the survey, tomato crop was most susceptible with 98.99% incidence, followed by brinjal with 82.36% and potato with 61.19% incidence. The mean plant disease index varied between 9.98% and 65.99% among the three crops. Isolation and characterization of the causal agent from symptomatic plants revealed association of small-spored spp. in all crops. Further, morphological and Internal Transcribed Spacer (ITS) sequencing phylogenetic analysis ascertained the fungus belong to section of genus. As tomato was found most susceptible, host plant resistance was explored among 197 tomato germplasm/breeding lines under epiphytotic conditions. It was found that 08 accessions exhibited moderate resistance against pathogen. The findings in the study suggest that small-spored is an emerging problem in the solanaceous vegetables and warrants attention for effective management of the disease.
The online version contains supplementary material available at 10.1007/s13205-024-04059-7.
在德里国家首都辖区和哈里亚纳邦种植的三种茄科蔬菜，即番茄、马铃薯和茄子中，观察到了 spp. 的严重发病情况。有症状的植株在叶片上出现坏死性褐色病斑，从下部老叶开始，延伸至茎部，影响整株植物。随后，在番茄和茄子作物的果实上观察到黑色煤烟状孢子形成。在调查期间，番茄作物最易感，发病率为 98.99%，其次是茄子，发病率为 82.36%，马铃薯发病率为 61.19%。三种作物的平均植株病害指数在 9.98% 至 65.99% 之间。从有症状的植株中分离并鉴定病原菌，发现所有作物中均有小孢子 spp. 存在。此外，形态学和内转录间隔区（ITS）测序系统发育分析确定该真菌属于 属的 组。由于发现番茄最易感，因此在流行条件下对 197 份番茄种质/育种系进行了寄主植物抗性研究。发现有 08 份种质对病原菌表现出中度抗性。该研究结果表明，小孢子 是茄科蔬菜中一个新出现的问题，需要关注对该病害的有效管理。
在线版本包含可在 10.1007/s13205-024-04059-7 查阅的补充材料。
