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<p>Corynespora leaf fall disease caused by <i>Corynespora cassiicola</i> is one of the most destructive rubber diseases worldwide. In this study, a fungal consortium was bioformulated and tested against <i>C. cassiicola</i>. Pathogenicity of <i>Trametes polyzona</i> (USM-AKLI10) and <i>Xylaria feejeensis</i> (USM-AKLI2) fungal endophytes from rubber was first tested on several crops. These two fungal isolates were confirmed non-pathogenic. Compatibility between non-pathogenic fungal endophytes was conducted in a dual-culture. The percentage inhibition of single culture and two-culture combinations were determined through an antifungal activity in vitro. In compatibility test, isolate <i>T. polyzona</i> and <i>X. feejeensis</i> exhibited minimal antagonistic effect between each other. In single culture, <i>X. feejeensis</i> and <i>T. polyzona</i> have 75.48% and 74.53% inhibition, respectively. When in dual-culture combination, these fungal endophytes (bioformulated consortium) effectively suppressed the growth of the <i>C. cassiicola</i> with 88.73% inhibition comparable to the biological control <i>Trichoderma harzianum</i> and chemical control difenoconazole. Consortium with dual-culture fungal endophytes <i>T. polyzona</i> and <i>X. feejeensis</i> showed synergistic effect that yields more suppressive effect on the growth of <i>C. cassiicola</i> compared to single-culture antagonist. This offers a potential biological non-toxic option to manage Corynespora leaf fall disease in rubber.</p>

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Fungal endophytes consortium derived from rubber (Hevea brasiliensis Muell. Arg.) as antagonist against Corynespora cassiicola causing Corynespora leaf fall disease

  • 期刊论文

  • 发表日期：

    2025年2月20日

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  • Al-Hamsour K. Matanog,
  • Tamie C. Solpot,
  • Bryan Lloyd P. Bretaña,
  • Maria Elena N. Tanabe,
  • Ma. Teodora N. Cabasan

摘要

Corynespora leaf fall disease caused by Corynespora cassiicola is one of the most destructive rubber diseases worldwide. In this study, a fungal consortium was bioformulated and tested against C. cassiicola. Pathogenicity of Trametes polyzona (USM-AKLI10) and Xylaria feejeensis (USM-AKLI2) fungal endophytes from rubber was first tested on several crops. These two fungal isolates were confirmed non-pathogenic. Compatibility between non-pathogenic fungal endophytes was conducted in a dual-culture. The percentage inhibition of single culture and two-culture combinations were determined through an antifungal activity in vitro. In compatibility test, isolate T. polyzona and X. feejeensis exhibited minimal antagonistic effect between each other. In single culture, X. feejeensis and T. polyzona have 75.48% and 74.53% inhibition, respectively. When in dual-culture combination, these fungal endophytes (bioformulated consortium) effectively suppressed the growth of the C. cassiicola with 88.73% inhibition comparable to the biological control Trichoderma harzianum and chemical control difenoconazole. Consortium with dual-culture fungal endophytes T. polyzona and X. feejeensis showed synergistic effect that yields more suppressive effect on the growth of C. cassiicola compared to single-culture antagonist. This offers a potential biological non-toxic option to manage Corynespora leaf fall disease in rubber.