Combination of FOBIO biopesticide and Brassica rapa L. as remediator of heavy metal Pb in soil

Abstract

Marginal soil is infertile soil caused by various factors, one of which is the excessive accumulation of heavy metals. FOBIO microorganism-based biopesticide formula containing phosphate solubilizing bacteria is expected to be used to reduce excess heavy metals in the soil. Brasica rapa L. is a variety resistant to Pb heavy metal stress and absorbs more heavy metals into root tissue than leaf tissue with the help of microorganisms. This study aimed to determine the combination of Brassica rapa L. and FOBIO biopesticide in absorbing Pb in the soil, determine the growth of Brassica rapa L. at each Pb concentration, and determine the population of phosphate-solubilizing bacteria in the soil at each level of Pb stress after remediation. This study used variations in the concentration of heavy metals, particularly Pb. Parameters observed included plant growth, Pb concentration in the soil before and after remediation, and the population of phosphate-solubilizing bacteria. The results showed that combining FOBIO biopesticides and Brassica rapa L. could reduce Pb concentration in the soil. The growth of Brassica rapa L. plants was significantly different after treatment. The findings confirmed that increasing, the concentration of Pb led to a decrease in the population of phosphate-solubilizing bacteria.

Growth Test of Pakchoy (Brassica rapa L) Against Abiotic Stress from the Heavy Metal Pb

“…Oleh karena itu, penting untuk memahami bagaimana tanaman pakcoy merespon cekaman abiotik logam berat Pb, karena penelitian ini dapat memberikan wawasan yang berharga tentang strategi adaptasi tanaman terhadap lingkungan yang terkontaminasi oleh logam berat. Kombinasi tanaman pakcoy dan bakteri pelarut phospat dapat bersimbiosis dalam mengakumulasi logam berat Pb pada tanah (Widya et al, 2022a).…”

“…memiliki kemampuan menyerap logam berat ke jaringan akar disbanding dengan jaringan daun dengan bantuan mikroorganisme, tanaman tersebut merupakan varietas yang tahan terhadap cekaman logam berat Pb. Beberapa spesies dari genus Brassica merupakan tanaman pertanian yang sangat penting juga dikenal sebagai akumulator logam berat (Widya et al, 2022b), Ada banyak penelitian mengenai toleransi, penyerapan dan pertahanan mekanisme di beberapa spesies ini, melawan stres yang disebabkan oleh logam berat. Sejumlah penelitian juga telah dipublikasikan tentang kapasitas spesies ini untuk digunakan untuk tujuan fitoremediasi namun dengan hasil yang beragam (Mourato et al, 2015).…”