Scholarlink

<p>Bacterial wilt, caused by <i>Ralstonia solanacearum</i>, is a devastating soil-borne disease affecting solanaceous crops worldwide. This study investigated the relationship between bacterial wilt incidence and key soil environmental factors (physicochemical properties, enzyme activities, and microbial diversity) across three distinct soil types (sandy, loam, and clay) in Hainan, China. Our results demonstrated that the loam soil exhibited the lowest disease incidence (48.51%) and severity index (22.22), which was associated with its more acidic post-inoculation pH (4.39 ± 0.04) and higher microbial diversity. In contrast, the clay soil showed the highest disease incidence (85.07%), correlated with elevated nitrogen levels (147.50&#xa0;mg/kg) and reduced phosphorus availability (3.67&#xa0;mg/kg). Spearman and redundancy analyses revealed significant correlations between disease incidence and soil pH, organic matter content, enzyme activities (urease, catalase), and microbial community composition. Notably, beneficial microbes such as <i>Bacillus</i> (12.4%) and <i>Trichoderma</i> (8.3%) were enriched in the loam soil, potentially contributing to pathogen suppression. These findings underscore the critical associations between soil type and bacterial wilt dynamics through their influence on soil microbial ecology, providing preliminary insights for developing site-specific, sustainable disease management strategies, although further research with replicated sites is needed to confirm these patterns.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Soil type-associated factors correlate with bacterial wilt incidence in tropical fields: a case study from Hainan, China

  • 期刊论文

  • 发表日期：

    2026年8月1日

查看全文
  • Qimin Cao,
  • Haipeng Li,
  • Yuehua Huang,
  • Chuanliang Fu

摘要

Bacterial wilt, caused by Ralstonia solanacearum, is a devastating soil-borne disease affecting solanaceous crops worldwide. This study investigated the relationship between bacterial wilt incidence and key soil environmental factors (physicochemical properties, enzyme activities, and microbial diversity) across three distinct soil types (sandy, loam, and clay) in Hainan, China. Our results demonstrated that the loam soil exhibited the lowest disease incidence (48.51%) and severity index (22.22), which was associated with its more acidic post-inoculation pH (4.39 ± 0.04) and higher microbial diversity. In contrast, the clay soil showed the highest disease incidence (85.07%), correlated with elevated nitrogen levels (147.50 mg/kg) and reduced phosphorus availability (3.67 mg/kg). Spearman and redundancy analyses revealed significant correlations between disease incidence and soil pH, organic matter content, enzyme activities (urease, catalase), and microbial community composition. Notably, beneficial microbes such as Bacillus (12.4%) and Trichoderma (8.3%) were enriched in the loam soil, potentially contributing to pathogen suppression. These findings underscore the critical associations between soil type and bacterial wilt dynamics through their influence on soil microbial ecology, providing preliminary insights for developing site-specific, sustainable disease management strategies, although further research with replicated sites is needed to confirm these patterns.