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<p>Postharvest anthracnose in mango caused by <i>Colletotrichum gloeosporioides</i> is an omnipresent disease demanding safe and sustainable alternatives to fungicides. In this study, we explored the induced systemic resistance in mango fruits to compare and elucidate the potential of cinnamon oil, 5-sulfosalicylic acid, and <i>Bacillus pumilus</i> (MN153818) against the anthracnose. Defense-related enzymes such as phenylalanine ammonia lyase, peroxidase, polyphenol oxidase, superoxide dismutase, and catalase, as biochemical markers of resistance, were found enhanced in mango fruits treated with a low concentration of cinnamon oil and 5-sulfosalicylic acid against <i>C. gloeosporioides</i>. The enzyme activity peaked at 3–5 days in the treated fruits and then dropped abruptly in fruits, whereas it slowly developed in <i>B. pumilus</i> treated fruits. Increased resistance in fruits treated with essential oils and salicylic acid analogues rather than antagonists is attributed to the induction of rapid defense-related enzymes by activation of phenylpropanoid-related pathways. These results emphasize the temporal subtleties of resistance in harvested fruits and the use of defense inducers in integrating with antagonists for enhanced postharvest disease management as eco-friendly alternatives to fungicides.</p>

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Induced systemic resistance in mango fruits by cinnamon oil, salicylic acid analogue, and Bacillus antagonist against anthracnose

  • 期刊论文

  • 发表日期：

    2026年2月17日

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  • Parthasarathy Seethapathy,
  • Deepu Pandita,
  • Anu Pandita,
  • Shabir H. Wani

摘要

Postharvest anthracnose in mango caused by Colletotrichum gloeosporioides is an omnipresent disease demanding safe and sustainable alternatives to fungicides. In this study, we explored the induced systemic resistance in mango fruits to compare and elucidate the potential of cinnamon oil, 5-sulfosalicylic acid, and Bacillus pumilus (MN153818) against the anthracnose. Defense-related enzymes such as phenylalanine ammonia lyase, peroxidase, polyphenol oxidase, superoxide dismutase, and catalase, as biochemical markers of resistance, were found enhanced in mango fruits treated with a low concentration of cinnamon oil and 5-sulfosalicylic acid against C. gloeosporioides. The enzyme activity peaked at 3–5 days in the treated fruits and then dropped abruptly in fruits, whereas it slowly developed in B. pumilus treated fruits. Increased resistance in fruits treated with essential oils and salicylic acid analogues rather than antagonists is attributed to the induction of rapid defense-related enzymes by activation of phenylpropanoid-related pathways. These results emphasize the temporal subtleties of resistance in harvested fruits and the use of defense inducers in integrating with antagonists for enhanced postharvest disease management as eco-friendly alternatives to fungicides.