Komunitas Bakteri Perakaran dan Potensi Polygala paniculata sebagai Pestisida Nabati pada Tanaman Tomat
Abstract
Balsam grass (Polygala paniculata) is a grass often found in rice fields and plantations. This grass is known as an herbal plant due to its ingredients that can be used for treatment. In agriculture, this grass has not been widely used. P. paniculata is known as a place for bacteria to colonize the roots, besides that the content of flavonoids, steroids and alkaloids has the potential to affect insect habitat. This study aims to determine the microbial community on the roots of balsam grass and the effectiveness of this plant as a biopesticide. This research was conducted by isolating the root bacteria of P. paniculata around tomato plantations and to determine their effectiveness in suppressing the pathogens of Fusarium wilt and bacterial wilt and extracting plant to determine its effect on insect vectors that cause viral diseases. The results showed that the root microbial communities of P. paniculata varied and some had antagonistic properties against Fusarium sp. with suppression of up to 83.63%, while thesuppression on Ralstonia solanacearum was 67.21%. Aphid mortality test from plant extracts showed a mortality of up to 60%. While the potency of the extract showed antifungal and antibacterial activity with a strong suppression of> 50% at a concentration of 0.5%. While the insecticidal activity is >60% at a concentration of 0.5%.
References
Hurst M. R. H., Glare T. R., Jackson T. A., & Ronson C. W. (2000). Plasmid-located pathogenicity determinants of Serratia entomophila, the causal agent of amber disease of grass grub, show similarity to the insecticidal toxins of Photorhabdus luminescens. J. of Bacteriology. 182, 5127-5138.
Jones, J., Zitter, T., Momol, T., & Miller, S. (2014). Compendium of tomato diseases and pests, 2nd ed. America: American Phytopathological Society.
Kartika, R., W. Syafi’i, & M. Hanafi. (2003). Aktivitas anti jamur damar mata kucing. J. Teknologi Hasil Hutan. 16, 81-89.
Mierziak, J., Kostyn K., & Kulma A. (2014). Flavonoids as Important Molecules of Plant Interactions with the Environment. Molecules. 19, 16240-16265.
Ong, S.N., Taheri S, Othman R.Y., & Teo C.H. (2020). Viral disease of tomato crops (Solanum lycopesicum L.): An Overview. J. of Plant Disease and Protection. 127, 725–739.
Raaijmakers, T.M., Paulitz, T.C., Steinberg, C., Alabouvette, C., & Moënne-Loccoz, Y. (2009). The Rhizosphere: a Playground and Battlefield for Soilborne Pathogens and Beneficial Microorganisms. Plant Soil. 321, 341-361.
Rashid, T.S., Sijam, K., Awla, H.K., Saud H.M., & Kadir J (2016) Pathogenicity assay and molecular identification of fungi and bacteria associated with diseases of tomato in Malaysia. Am J. Plant Sci. 6, 949–957.
Rijai, L. (2013). Potensi Herba Tumbuhan Balsem (Polygala paniculata Linn) Sebagai Sumber Bahan Farmasi Potensial. J. Trop. Pharm. Chem. 2, 2.
Singh, S., Gautam R.K., Singh D.R., Sharma T.V.R.S., Sakthivel K., & Dam Roy S. (2015). Genetic approaches for mitigating losses caused by bacterial wilt of tomato in tropical islands. European J. of Plant Pathology. 143, 205–221.
War, A.R., Paulraj, M.G., Ahmad, T., Buhroo, A.A., Hussain, B., Ignacimuthu, S., & Sharma, H.C. Mechanisms of plant defense against insect herbivores. Plant Signal Behav. 7, 1306–1320.
Zhao, X., Mei W., Gong M., Zuo W., Bai H., & Dai H. (2011). Antibacterial Activity of the Flavonoids from Dalbergia odorifera on Ralstonia solanacearum. Molecules. 16, 9775-9782.
