Scholarlink

<p>Black gram (<i>Vigna mungo</i> (L.) Hepper) is an important pulse crop in Asia; however, its productivity is severely constrained by mungbean yellow mosaic India virus (MYMIV), particularly in South and Southeast Asia. The present study aimed to (i) characterize the whitefly vector involved in MYMIV transmission, (ii) determine the effects of acquisition access period (AAP), inoculation access period (IAP), and vector density on virus transmission, and (iii) evaluate the influence of meteorological factors on seasonal whitefly population dynamics and MYMIV incidence in black gram under field conditions in West Bengal, India. Molecular analysis based on mtCOI sequencing confirmed the predominance of the Asia-I cryptic species of <i>Bemisia tabaci</i> in the study area. Transmission assays showed that MYMIV transmission increased with longer AAP and IAP, reaching 100% transmission after 24&#xa0;h, and required 20 viruliferous whiteflies per seedling for complete infection. Field observations revealed that whitefly populations were positively correlated with temperature and bright sunshine hours, but negatively correlated with relative humidity and rainfall. Multiple regression analysis demonstrated a stronger association between meteorological variables and MYMIV incidence in 2023 (R<sup>2</sup> = 0.93) than in 2022 (R<sup>2</sup> = 0.71). These findings underscore the importance of integrating vector biology with climatic variables to improve climate-based forecasting and timely management strategies for MYMIV in black gram cultivation.</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

Exploring the climate-driven dynamics of whitefly (Bemisia tabaci) Asia-I cryptic species population and their role in mungbean yellow mosaic India virus (MYMIV) transmission in black gram

  • 期刊论文

  • 发表日期：

    2026年4月4日

查看全文
  • Subham Dutta,
  • Moumita Panda,
  • Kousik Atta,
  • Poorvasandhya R,
  • Thomas Wilbur Davis,
  • Ankur Mukhopadhyay,
  • Souvik Samanta,
  • Poly Saha,
  • Jayanta Tarafdar,
  • Mritunjoy Barman

摘要

Black gram (Vigna mungo (L.) Hepper) is an important pulse crop in Asia; however, its productivity is severely constrained by mungbean yellow mosaic India virus (MYMIV), particularly in South and Southeast Asia. The present study aimed to (i) characterize the whitefly vector involved in MYMIV transmission, (ii) determine the effects of acquisition access period (AAP), inoculation access period (IAP), and vector density on virus transmission, and (iii) evaluate the influence of meteorological factors on seasonal whitefly population dynamics and MYMIV incidence in black gram under field conditions in West Bengal, India. Molecular analysis based on mtCOI sequencing confirmed the predominance of the Asia-I cryptic species of Bemisia tabaci in the study area. Transmission assays showed that MYMIV transmission increased with longer AAP and IAP, reaching 100% transmission after 24 h, and required 20 viruliferous whiteflies per seedling for complete infection. Field observations revealed that whitefly populations were positively correlated with temperature and bright sunshine hours, but negatively correlated with relative humidity and rainfall. Multiple regression analysis demonstrated a stronger association between meteorological variables and MYMIV incidence in 2023 (R2 = 0.93) than in 2022 (R2 = 0.71). These findings underscore the importance of integrating vector biology with climatic variables to improve climate-based forecasting and timely management strategies for MYMIV in black gram cultivation.