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All Journal Jurnal Penelitian Saintek Journal of Degraded and Mining Lands Management
Sujangka, Arsyad
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Decision Sciences, Operations Research & Management

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Role of plant growth promoting rhizobacteria on Pteris vittata L as a potential hyperaccumulator plant for gold phytomining agent Aminatun, Tien; Rakhmawati, Anna; Atun, Sri; Idrus, Arifudin; Sujangka, Arsyad
Journal of Degraded and Mining Lands Management Vol. 12 No. 2 (2025)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15243/jdmlm.2025.122.7217

Abstract

Gold phytomining is the extraction of gold from the soil by harvesting specially selected hyperaccumulator plants. One of the potential plant species as a gold hyperaccumulator at the Ratatotok site, North Sulawesi, Indonesia, is Pteris vitata L, possibly because of the presence of rhizobacteria colonies in the roots to help the plant's resistance to metal stress in the soil. The isolation and identification show that the most resistant rhizobacteria to the gold stress is Pseudomonas aeruginosa RTKP1. The study aimed to assess the Pseudomonas aeruginosa RTKP1 to assist the gold bioaccumulation in Pteris vittata L. The phytomining test was carried out with four series of treatments for Pteris vittata L growing media, i.e., (1) tailings without compost and bacterial isolates, (2) tailings with bacterial isolates, (3) tailings with compost, and (4) tailings with compost and bacterial isolate. A descriptive analysis was carried out to analyze the role of the Pseudomnas aeruginosa RTKP1 on gold reduction in the media and gold bioaccumulation in Pteris vittata L. A quantitative analysis was carried out to analyze the bioaccumulation ability of Pteris vittata L with and without the addition of bacterial isolate. The role of the Pseudomonas aeruginosa RTKP1 is to increase the Translocation Factor (TF) and Biological Concentration Factor (BCF), particularly in the roots. The addition of compost to tailings as growing media for Pteris vittata L inhibits the effectiveness of the work of the Pseudomonas aeruginosa RTKP1 in increasing BCF and TF. However, this effect needs to be tested further to obtain significant results.
Pengaruh variasi jenis dan peletakan refugia terhadap kemelimpahan serangga pada ekosistem sawah Aminatun, Tien; Suryadarma, I Gusti Putu; Suhartini, Suhartini; Sujangka, Arsyad
Jurnal Penelitian Saintek Vol 28, No 1 (2023)
Publisher : Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/jps.v1i1.58324

Abstract

Tujuan penelitian ini adalah mengkaji pengaruh variasi jenis dan peletakan tanaman refugia terhadap kemelimpahan serangga pada pertanaman padi dan perlakuan variasi jenis dan peletakan tanaman refugia yang paling berpotensi dalam natural pest control berdasarkan kanekaragaman musuh alami. Metode penelitian ini dilakukan dengan menanam tumbuhan kenikir (Tagetes erecta L.) dan kacang panjang (Vigna unguiculata (L.) Walp.) yang masing-masing dengan variasi peletakan di pinggir dan di tengah plot pertanaman padi. Setiap perlakuan terdiri atas 3 plot ulangan, dengan luas setiap plot 4 m2 . Pengamatan keanekaragaman dan kemelimpahan serangga dilakukan 3 minggu sekali selama 4 kali dalam satu musim tanam padi. Hasil penelitian menunjukkan variasi jenis dan peletakan tanaman refugia berpengaruh terhadap kemelimpahan serangga. Perlakuan refugia tanaman kacang panjang di pinggir plot memiliki keanekaragaman musuh alami yang lebih tinggi dibandingkan di tengah plot pertanaman padi, akan tetapi keanekaragaman musuh alami tertinggi adalah pada perlakuan refugia tanaman kenikir di tengah plot pertanaman padi. Hal ini menunjukkan bahwa perlakuan tanaman refugia kenikir di tengah pertanaman padi paling berpotensi dalam natural pest control karena memiliki indeks keanekaragaman musuh alami paling tinggi, sehingga mampu menciptakan agroekosistem yang lebih stabil.  
Co-Authors Anna Rakhmawati Arifudin Idrus I Gusti Putu Suryadarma, I Gusti Putu SRI ATUN Suhartini Suhartini Tien Aminatun