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Journal : JPT : JURNAL PROTEKSI TANAMAN (JOURNAL OF PLANT PROTECTION)

Endophytic Bacteria Consortia as Biocontrol Against Brown Spot Disease (Helminthosporium oryzae) and Growth Promotion in Rice Sulyanti, Eri; Resti, Zurai; Rahma, Haliatur; Darnetty, Darnetty; Khairul, Ujang; Nurhaliza, Nurhaliza; Oktaviani, Silvia
Jurnal Proteksi Tanaman (Journal of Plant Protection) Vol. 9 No. 1 (2025): June 2025
Publisher : Plant Protection Department, Faculty of Agriculture, Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jpt.9.1.1-13.2025

Abstract

The brown spot disease (BSD) caused by Helminthosporium oryzae in rice can lead to yield losses of up to 45 %. Using endophytic bacterial consortia as a biological agent is one of the most potential control methods for resisting the disease. This study aimed to obtain an endophytic bacterial consortium with the best efficacy in controlling BSD and its ability to enhance rice plant growth. Statistical analysis in this study was made using Analysis of Variance (ANOVA) with Duncan’s Multiple Range Test (DMRT) in a randomized experimental design comprising five treatments with five replications. The treatments included: A (Serratia marcescens ULG1E4 + S. marcescens JB1E3), B (S. marcescens ULG1E4 + S. marcescens JB1E3 + Serratia marcescens JB1E2), C (Bacillus sp. SJI + Serratia marcescens ULG1E4), D (positive control), and E (negative control). Testing was conducted in planta, with the introduction of the bacterial consortium (10⁸ cells/mL) via seed and root soaking methods. Subsequently, the leaves of 30-day-old rice plants were inoculated with H. oryzae by spraying a conidial suspension of 10⁶ conidia/ml. Parameters observed included disease progression (incubation period, incidence, and severity), seedling growth metrics (height, leaf number, root length, fresh and dry biomass), and overall plant development (plant height, leaf number, and tiller count). The results demonstrated that the consortium of Serratia marcescens ULG1E4, Serratia marcescens JB1E3, and Serratia marcescens JB1E2 effectively controlled BSD, achieving a 53.69% reduction in disease severity and promoted rice plant growth, evidenced by a 30.63% increase in leaf number
Co-Authors Abdullah, M Adli Adela, Nurul Adi Purwanto, Sayugo Adita, Wildhan Pratama Affandi, Aulia Aftagina, Sisilia Agil Fitrah Lanova Agnes Yunanda Widariyono, Dimas Agustin, Dewi Ahmad Fuadi Aisyah, Rohil Akbar, Reinaldi Akram, Akram Alber, Alber Aliza, Elsandia Nor ama, Fatma Amalia, Trisy Amelia Sari, Selvy Amin , Zulva Sahrul Amin, Muslim Ananta, Azra Andien Adella, Jumaretha Anggraini, Putri Anggraini, Sephia Anisa Fitri Anisa Rahmah Anita Ade Rahma Apfani, Sry Apriliani, Maudy Karmilla Aprizal Aprizal Aratha, Deane Cika Arfatussalamah, Arfatussalamah Arianto Arianto Aritonang, Daniel Armanita, Nabila Asis, Asis Assya’bani, Ridhatullah Astuti - Aulia Nurul Hikmah Aulia, Nadia Diva Avianingtyas, Hayunda Azahra, Elda Azizah, Rahmah Camellia Camellia, Camellia Chakafhorti , Dhifta Damayanti, Ni Luh Tri Dewi Darmawan, Adichandra Febryana Yuscatama Darmawan, Fahrudin Rizki Darnetty, Darnetty Dawati, Erni Deliani, Susy Depi, Sita Desvi Wahyuni Dian Miranda Dina Dina, Dina Dwi Sartika, Indah Efendi Efendi Effriansyah, Muhammad Kevin Endi, Tarisa Erna Erna, Erna Eva Zulisa Fadila, Sisca Nurul Fahrezi, Kevin Fajar Sari Tanberika Farah Azila , Nur Fatimah, Sri Putri Fatmawati, Sarah Fernandi, Safi'i Fiqratama Mattotorang, Andi Fitriani Fitriani Gafur, Ahmad Ghovirin, Khoirul Gilang Ramadhan Gulo, Natalia Nur Iman Guntara, Dewa Hafifah, Nur Hailuddin Haliatur Rahma, Haliatur Halimatusyadiah, Halimatusyadiah Hamdani Hamdani Hanifa Aisyah Hannas, M. 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