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All Journal Jurnal Fitopatologi Indonesia Indonesian Journal of Chemistry
Julinda Bendalina Dengga Henuk
Agro Technology Department, Faculty Of Agriculture, Universitas Nusa Cendana, Kupang, NTT, Indonesia
Chemical Engineering, Chemistry & Bioengineering Chemistry Medicine & Pharmacology

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Identifikasi Penyebab Penyakit Busuk Pangkal Batang pada Jeruk Eka Retnosari; Julinda Bendalina Dengga Henuk; Meity Suradji Sinaga
Jurnal Fitopatologi Indonesia Vol 10 No 3 (2014)
Publisher : The Indonesian Phytopathological Society (Perhimpunan Fitopatologi Indonesia)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (316.036 KB) | DOI: 10.14692/jfi.10.3.93

Abstract

One major disease of citrus is basal stem rot which may cause significant constraint on citrus production in Indonesia. Research was initiated to identify the causal agent of basal stem rot disease from 11 citrus growing areas in Indonesia. Identification of fungal pathogens was based on macroscopic and microscopic observation of morphological characters. Koch Postulate was conducted to confirm the causal agent of the disease. Two fungal pathogens, Botryodiplodia theobromae, and Phytophthora citrophthora were found associated with basal stem rot disease. B. theobromaewere isolated from all plant samples, whereas P. citrophthorawas only isolated on samples from Soe (East Nusa Tenggara). Characteristic symptoms of basal stem rot disease was developed on plants inoculated with B. theobromae and P. citrophthora; this confirmed that two fungal isolates was the causal agent of basal stem rot disease.
Bioactive Secondary Metabolites from the Mangrove Endophytic Fungi Nigrospora oryzae Antonius Rolling Basa Ola; Titus Lapailaka; Hermania Em Wogo; Julinda Bendalina Dengga Henuk; Agnes Simamora; Lince Mukkun; Peter Proksch; Chong Dat Pham
Indonesian Journal of Chemistry Vol 21, No 4 (2021)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijc.63129

Abstract

Mangrove forest has a distinctive habitat adapting with marine and terrestrial environment. Chemical investigation of the extract from mangrove endophytic fungi Nigrospora oryzae had resulted in the isolation of sterigmatocystin (1) and pestalopyrone (2). The structure of sterigmatocystin (1) and pestalopyrone (2) were elucidated using mass, UV and NMR spectrometers together with the comparison with the literature data. The study also showed that sterigmatocystin displayed moderate cytotoxicity but it could be further developed as antiviral and antibacterial agent based on the SAR information reported from its analogue and derivatives.
Co-Authors Agnes Simamora Antonius R.B. Ola Chong Dat Pham Eka Retnosari Hermania Em Wogo Lapailaka, Titus Lince Mukkun Meity Suradji Sinaga Peter Proksch