PDF(Pubmed)
Abstract：
In tropical countries, combating leaf curl disease in hot peppers has become important in improvement programs. Leaf curl disease is caused by whitefly (Bemisia tabaci) transmitted begomoviruses, which mainly include chilli leaf curl virus (ChiLCV). However, multiple begomoviruses have also been found to be associated with this disease. The Capsicum annuum line, DLS-Sel-10, was found to be a tolerant source against this disease during field screening. In this study, we characterized the resistance of DLS-sel-10 against chilli leaf curl virus (ChiLCV) in comparison to the susceptible cultivar Phule Mukta (PM), focusing on the level, stage, and nature of resistance. Comprehensive investigations involved screening of DLS-Sel-10 against the whitefly vector ChiLCV. The putative tolerant line displayed reduced virus infection at the seedling stage, with increasing resistance during vegetative, flowering, and fruiting stages. Both DLS-Sel-10 and PM could be infected with ChiLCV, although DLS-Sel-10 remained symptomless. Insect feeding assays revealed DLS-Sel-10 as a less preferred host for whiteflies compared to PM. In conclusion, DLS-Sel-10 demonstrated tolerance not only to ChiLCV but also served as an unfavorable host for the whitefly vector. The study highlighted an age-dependent increase in tolerance within DLS-Sel-10, showcasing its potential for effective leaf curl disease management in chilli.
摘要：
在热带国家,防治辣椒卷叶病已成为改善计划的重要手段。卷叶病是由粉虱（烟粉虱）传播的双生病毒引起的，主要包括辣椒卷叶病毒(ChiLCV)。然而,还发现多种斑马病毒与这种疾病有关。辣椒系列，在现场筛选过程中发现DLS-Sel-10是对该疾病的耐受来源。在这项研究中,与易感品种PhuleMukta（PM）相比，我们表征了DLS-sel-10对辣椒卷叶病毒（ChiLCV）的抗性，专注于水平，舞台,和抵抗的性质。全面调查涉及针对粉虱载体ChiLCV筛选DLS-Sel-10。假定的耐受品系在苗期显示出减少的病毒感染，随着植物生长过程中抗性的增加，开花,和结果阶段。DLS-Sel-10和PM都可能感染ChiLCV，尽管DLS-Sel-10仍然没有症状。昆虫摄食测定显示，与PM相比，DLS-Sel-10是较不优选的粉虱宿主。总之,DLS-Sel-10不仅表现出对ChiLCV的耐受性，而且还表现出粉虱载体的不利宿主。该研究强调了DLS-Sel-10中耐受性的年龄依赖性增加，展示了其在辣椒中有效控制叶片卷曲病的潜力。
