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All Journal Jurnal Biologi Tropis Anjoro : International Journal of Agriculture and Business
Wiridannisaa, Nurul
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Economics, Econometrics & Finance Immunology & microbiology

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Identification of Begomoviruses Causing Yellow Curl Disease in Chilli in West Java Wiridannisaa, Nurul; Kasim, Niken Nur; Prihatin, Prihatin
Jurnal Biologi Tropis Vol. 25 No. 3 (2025): Juli-September
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v25i3.9838

Abstract

Begomoviruses are among the most destructive plant viruses infecting chili (Capsicum annuum L.), leading to significant yield losses in tropical and subtropical regions. In Indonesia, particularly in West Java, the incidence of viral diseases in chili plants has increased, yet molecular identification of the causal agents remains limited. This study aimed to detect and characterize Begomovirus infections in chili plants from Cianjur and Bogor using molecular techniques. Symptomatic leaf samples showing chlorosis, curling, and stunted growth were collected and analyzed using Polymerase Chain Reaction (PCR) with universal Begomovirus primers (SPG1/SPG2). Amplicons were sequenced and compared using BLAST analysis to determine nucleotide identity and phylogenetic relationships. Results showed that all tested samples were positively infected with Begomovirus, with sequence homologies ranging from 87% to 96% with Pepper yellow leaf curl Indonesia virus (PYLCIV). Phylogenetic analysis revealed that isolates from Cianjur and Bogor clustered differently, indicating genetic variability possibly influenced by agroecological conditions and seed exchange practices. Findings highlight the presence of multiple Begomovirus species infecting chili in West Java and underscore the importance of early molecular detection in managing viral diseases. It is recommended that integrated disease management strategies be developed, including the use of virus-free seedlings, resistant cultivars, and region-specific monitoring systems.
Estimation of Yield Loss Due to Striped Disease in Peanut Plants in Palopo City, South Sulawesi Kasim, Niken Nur; Prihatin, Prihatin; Sukmawati, Sri; Wiridannisaa, Nurul
Jurnal Biologi Tropis Vol. 24 No. 2 (2024): April - Juni
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v24i2.6641

Abstract

Palopo City is one of the peanut production centres in South Sulawesi. However, from 2008 to 2020, groundnut production in Palopo City has decreased. Recently, in South Sulawesi, it was reported that peanut stripe virus infection has spread widely and evenly in peanut plants. Symptoms of stripe disease include dark green and light green leaf colour, chlorosis, and can cause stunting. This study aims to determine the estimation of yield loss caused by stripe disease in peanut plants in Polopo City, South Sulawesi. This research was conducted in a farmer-owned groundnut field located in Purangi Village, Sendana Subdistrict, Palopo City, South Sulawesi, from January to May 2023. Parameters observed were plant height, disease severity and incidence, and yield loss. Observations were made 6 times on plants aged 4 to 9 weeks after planting. The results showed that the symptoms of striped disease showed that the growth of peanut plant height was inhibited, and caused a decrease in the number of pods, pod weight, and pod number. Disease severity increased to 57.2% and disease incidence to 46.6%. Yield loss caused by stripe symptoms in peanut plants was 43.78%, indicating that high disease severity and incidence can reduce yield.
Molecular identification of the virus causing yellow curl symptoms in local Katokkon Chili Plants (Capsicum chinense Jacq.) in West Sulawesi Wiridannisaa, Nurul; Kasim, Niken Nur; Sukmawati, Sri; Ilham, Ilham
Anjoro: International Journal of Agriculture and Business Vol 6 No 2 (2025): Anjoro
Publisher : Agribusiness Department, Agriculture and Forestry Faculty, Universitas Sulawesi Barat, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31605/anjoro.v6i2.5877

Abstract

Katokkon Chili is an important local variety in Mamasa, West Sulawesi, which frequently exhibits yellow mosaic and yellow curl symptoms. These symptoms are strongly suspected to be associated with viral infections, particularly those in the genera Begomovirus and Potyvirus. This study aimed to molecularly identify viruses causing yellow curl symptoms in Katokkon Chili plants. Symptomatic leaf samples were collected purposively from 14 locations in Mamasa Regency, West Sulawesi, followed by molecular detection and identification using universal Begomovirus and Potyvirus primers and sequencing analysis. Detection and identification results showed that chili plants yielded 912 bp DNA fragments with SPG1/SPG2 primers, confirming viral identity as Pepper Yellow Leaf Curl Indonesia Virus (PYLCIV) and demonstrating >98% homology with PYLCIV isolates from South Sulawesi. This study reports the first occurrence of PYLCIV in the Katokkon Chili variety in West Sulawesi and expands the host range of PYLCIV among chili varieties in Indonesia. These findings are important as a foundation for developing viral disease control strategies for chili plants in West Sulawesi.
Co-Authors Ilham Ilham Niken Nur Kasim, Niken Nur Prihatin Prihatin, Prihatin Sri Sukmawati