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<p>Phytoplasmas persistence in agricultural ecosystems is largely aided by secondary hosts, especially weeds, which serve as unnoticed reservoirs. <i>Cannabis sativa</i> L., a common weedhas repeatedly been reported to host diverse phytoplasma groups, yet its epidemiological role remains underexplored. Field surveys conducted in Gorakhpur, India, revealed co-infection of brinjal little leaf (BLL) and <i>C. sativa</i> witches’ broom (CWB) by 16SrVI-D phytoplasma. Molecular characterization and phylogenetic analysis confirmed this association. This studyidentifies <i>Cannabis</i> as anatural reservoir of phytoplasma, and highlights the remarkable diversity of phytoplasmas colonizing <i>Cannabis</i> across varied agroclimatic zones. Our findings reinforce the epidemiological importance of <i>C. sativa</i> as a “green bridge” for phytoplasma survival and underline the need to integrate weed management into phytoplasma disease control programs.</p>

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Global diversity and reservoir role of Cannabis sativa L. in phytoplasma epidemiology with insights from brinjal little leaf disease

  • 期刊论文

  • 发表日期：

    2026年6月29日

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  • Smriti Mall,
  • Apoorva Srivastava

摘要

Phytoplasmas persistence in agricultural ecosystems is largely aided by secondary hosts, especially weeds, which serve as unnoticed reservoirs. Cannabis sativa L., a common weedhas repeatedly been reported to host diverse phytoplasma groups, yet its epidemiological role remains underexplored. Field surveys conducted in Gorakhpur, India, revealed co-infection of brinjal little leaf (BLL) and C. sativa witches’ broom (CWB) by 16SrVI-D phytoplasma. Molecular characterization and phylogenetic analysis confirmed this association. This studyidentifies Cannabis as anatural reservoir of phytoplasma, and highlights the remarkable diversity of phytoplasmas colonizing Cannabis across varied agroclimatic zones. Our findings reinforce the epidemiological importance of C. sativa as a “green bridge” for phytoplasma survival and underline the need to integrate weed management into phytoplasma disease control programs.