Effects of Chitosan and Silica Nanoparticles Against the Development and Growth of Red Chilli Anthracnose Disease Colletotrichum sp.

Hersanti, .; Choir, Wina Siti; Rizkie, Lilian; Pu, Syifa Nabilah Subakti

doi:10.3923/pjbs.2022.748.754

Cited by 4 publications

(1 citation statement)

References 26 publications

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“…Masa inkubasi penyakit moler pada bawang merah dapat terjadi selama 3 hari pada tanah yang mengandung (Hersanti et al 2022). Kitosan nano dan silika nano mampu mengurangi keparahan penyakit moler pada bawang merah.…”

Section: Pembahasanunclassified

Effectiveness of Nano Chitosan and Nano Silica to Suppress the Growth of Fusarium oxysporum, the Cause of Twisting Disease on Shallot

Hersanti,

Febrianti,

Djaya

2023

J Fitopatol Indones

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Penyakit moler karena cendawan Fusarium oxysporum f. sp. cepae merupakan penyakit utama pada bawang merah. Alternatif pengendalian yang ramah lingkungan ialah penggunaan kitosan dan silika berukuran nano. Penelitian ini bertujuan untuk mengevaluasi kemampuan kitosan nano dan silika nano secara tunggal maupun campurannya untuk menekan perkembangan F. oxysporum secara in vitro dan in vivo, serta menentukan konsentrasi yang efektif. Uji in vitro disusun dalam rancangan acak lengkap pada medium uji ADK, sedangkan uji in vivo dilakukan pada bawang merah yang ditanam pada pot plastik yang disusun menggunakan rancangan acak kelompok. Perlakuan yang diuji ialah kitosan nano tunggal (50, 100, dan 200 ppm), silika nano tunggal (50, 100, dan 200 ppm), campuran kitosan nano 50 ppm + silika nano 50 ppm, campuran kitosan nano 100 ppm + silika nano 100 ppm, kontrol, dan fungisida berbahan aktif mankozeb 80% dengan konsentrasi 200 ppm, masing-masing perlakuan diulang sebanyak tiga kali. Hasil percobaan didapatkan bahwa dibandingkan dengan kontrol, semua perlakuan mampu menekan pertumbuhan koloni F. oxysporum dan menekan perkembangan penyakit moler pada tanaman bawang merah. Aplikasi kitosan nano tunggal konsentrasi 100 ppm, dan campuran kitosan nano 100 ppm + silika nano 100 ppm menghasilkan penghambatan koloni F. oxysporum tertinggi, yaitu sebesar 85.2% dan 81.3%, serupa dengan aplikasi fungisida mankozeb (83.5%). Campuran kitosan nano 100 ppm dan silika nano 100 ppm efektif menekan perkembangan penyakit moler bawang merah dengan penekanan sebesar 56.3%, setara dengan fungisida mankozeb yang penekanannya 50.5%.

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Section: Pembahasanunclassified

Effectiveness of Nano Chitosan and Nano Silica to Suppress the Growth of Fusarium oxysporum, the Cause of Twisting Disease on Shallot

Hersanti,

Febrianti,

Djaya

2023

J Fitopatol Indones

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Chitosan/silica: A hybrid formulation to mitigate phytopathogens

Riseh

Vatankhah

Hassanisaadi

et al. 2023

International Journal of Biological Macromolecules

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Dual role of KHCO₃ priming: reduces seed-borne pathogens on sorghum seeds and promotes seed germination

Dong,

Peng,

Liu

et al. 2024

Preprint

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Background Seed-borne diseases have seriously affected the sustainability of sorghum cultivation in China as the demand for organic products in the winemaking industry has limited the use of chemical fungicides. Results This study conducted a comprehensive analysis of fungal diversity in sorghum seeds from three major growing regions in Guizhou Province. Using a combination of traditional tissue separation and high-throughput sequencing, we identified Colletotrichum, Fusarium, Cladosporium, and Alternaria as dominant fungi. Pathogenicity tests revealed that strains GD202206, GD202219, and GD202242 were pathogenic and were identified as C. sublineola through morphological and multi-locus phylogeny analysis (ITS、CAPDH、ACT、CHS-1 and TUB2). 16 fungicides for seed priming experiments with sorghum seeds, the results indicated that priming with KHCO₃ significantly enhanced germination of the sorghum seeds, with both indoor and outdoor emergence rates notably higher. Analysis of the fungal changes before and after KHCO₃ priming revealed a significant reduction in the abundance of the Colletotrichum genus. Additionally, KHCO₃ altered the community structure of fungi within the sorghum seeds, reducing population richness. Inter-generic relationships were rebalanced, with antagonism decreased and synergy increased following KHCO₃ treatment. Non-target metabolomic analysis indicated that KHCO₃ enhances sorghum seed germination via the phenylalanine and flavonoid pathways and exhibits antifungal properties through the cyanoamino acid metabolic pathway. Conclusion This study identified C. sublineola as the primary pathogenic fungus carried by sorghum seeds. KHCO₃ treatment has a dual effect on sorghum seeds: on one hand, it suppresses pathogen transmission by reducing the abundance of the Colletotrichum genus; on the other hand, it promotes germination and seedling emergence, thereby enhancing both germination and emergence rates.

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Effects of Chitosan and Silica Nanoparticles Against the Development and Growth of Red Chilli Anthracnose Disease Colletotrichum sp.

Cited by 4 publications

References 26 publications

Effectiveness of Nano Chitosan and Nano Silica to Suppress the Growth of Fusarium oxysporum, the Cause of Twisting Disease on Shallot

Effectiveness of Nano Chitosan and Nano Silica to Suppress the Growth of Fusarium oxysporum, the Cause of Twisting Disease on Shallot

Chitosan/silica: A hybrid formulation to mitigate phytopathogens

Dual role of KHCO₃ priming: reduces seed-borne pathogens on sorghum seeds and promotes seed germination

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