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All Journal Biodiversitas Journal of Biological Diversity
Sri Kasmiyati
Faculty of Biology, Universitas Kristen Satya Wacana. Jl. Diponegoro 52-60, Salatiga 50711, Central Java, Indonesia
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology

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Exploring anticancer activity of wild and polyploid mutant of Artemisia cina Sri Kasmiyati; Elizabeth Betty Elok Kristiani; Maria Marina Herawati; Ferdy S Rondonuwu
Biodiversitas Journal of Biological Diversity Vol. 22 No. 3 (2021)
Publisher : Society for Indonesian Biodiversity

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/biodiv/d220319

Abstract

Abstract. Kasmiyati S, Kristiani EBE, Herawati MM, Rondonuwu FS. 2021. Exploring anticancer activity of wild and polyploid mutant of Artemisia cina.  Biodiversitas 22: 1227-1234. The research aims were to explore the anticancer compounds in wild type (W) and polyploid mutant (P) of Artemisia cina Berg ex Poljakov using NIR and compare their cytotoxicity and selectivity on WiDR colon cancer and HTB183 lung cancer cell lines and Vero normal cell line. The W was obtained from B2P2TOOT Tawangmangu, Indonesia while P was by inducing A. cina shoot culture with 100 mg/l colchicine for 48 hours. They were extracted with hexane using the soxhletation method for 6 hours. The anticancer compounds were detected using NIR. The cytotoxic activity was determined using MTT assay, with Doxorubicin (D) as a control. The calculation of IC50 value used SPSS16 with a Probit analysis. The P contained the determined four compounds while the W contained no rutin. The IC50 values of W, P, and D were 295.5, 84.1, and 0.5 µg/mL on WiDr, 322.4, 128.6, and 39.9 µg/mL on HTB 183, whereas on Vero were 104, 315.6, and 295.5 µg/mL respectively. The selectivity indexes of W, P, and D were 34, 4, and 91 on WiDr, while HTB 183 was 31, 3, and 7, respectively. The P contained artemisinin, quercetin, kaemferol, and rutin, while the W contained no rutin. The cytotoxicity of both plants was less than doxorubicin. Both plants were selective on WiDR and HTB 183.
Isolation and identification of Cr-resistant bacteria from the rhizosphere of Tagetes sp. and their ability to reduce Cr(VI) VINCENTIA IRENE MEITINIARTI; ELSA KRISTIANI PUTRI; ATHALIA EUGENIA RUNTU; RULLY ADI NUGROHO; SRI KASMIYATI
Biodiversitas Journal of Biological Diversity Vol. 23 No. 8 (2022)
Publisher : Society for Indonesian Biodiversity

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/biodiv/d230832

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Abstract. Meitiniarti VI, Putri EK, Runtu AE, Nugroho RA, Kasmiyati S. 2022. Isolation and identification of Cr-resistant bacteria from the rhizosphere of Tagetes sp. and their ability to reduce Cr(VI). Biodiversitas 23: 4118-4124. Bioremediation involving the interaction of plants with microorganisms is a technique for improving the environment polluted with chromium hexavalent [Cr(VI)]. Marigolds (Tagetes sp.) are known to be a hyperaccumulator plant for Cr(VI) and there are microbes in its rhizosphere that enable the plant tolerant to heavy metals. The aims of this study were to isolate and identify indigenous rhizobacteria resistant to Cr(VI) from Tagetes sp. and to test the ability of these bacterial isolates to reduce Cr(VI). Three isolates of Cr(VI) resistant bacteria were obtained in this study, namely Micrococcus luteus RT-9, Stenotrophomonas maltophilia RT-12, and Brevundimonas sp. RT-23. M. luteus RT-9 and S. maltophilia RT-12 which were resistant to Cr(VI) 100 mg L-1 and their mixture were tested for their ability to reduce Cr(VI) in a liquid medium. Microbacterium sp. SpR3 obtained by the previous study was used as a reference. The results showed that the isolate of S. maltophilia RT-12 had a higher ability (2.2 mg L-1 h-1) than M. luteus RT-9 (0.9 mg L-1 h-1). S. maltophilia RT-12 had the ability to reduce Cr(VI) similar to Microbacterium sp. SpR3. The mixed inoculation of M. luteus RT-9, S. maltophilia RT-12, and Microbacterium sp. SpR3 did not show a difference in the reduction ability of Cr (VI) compared to pure cultures.
Interaction between Eichornia crassipes with Microbacterium sp. SpR3 and Micrococcus luteus RT-9 in Cr6+ reduction in liquid media ANDRIYANI DEA WULANDARI; V. IRENE MEITINIARTI; SRI KASMIYATI
Biodiversitas Journal of Biological Diversity Vol. 25 No. 3 (2024)
Publisher : Society for Indonesian Biodiversity

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/biodiv/d250307

Abstract

Abstract. Wulandari AD, Meitiniarti VI, Kasmiyati S. 2024. Interaction between Eichornia crassipes with Microbacterium sp. SpR3 and Micrococcus luteus RT-9 in Cr6+ reduction in liquid media. Biodiversitas 25: 957-963. Water Pollution caused by Cr6+ contamination is difficult to remove from the environment. One of the efforts to reduce Cr6+ contamination in water is by bioremediation. Bioremediation using the interaction of rhizosphere bacteria with aquatic plants can be employed to decrease the content of Cr6+ in water environment. This study aimed to determine the effect of adding Microbacterium sp. SpR3, Micrococcus luteus RT-9, and a mixture of both bacteria on the ability of Eichornia crassipes to reduce the concentration of Cr6+ in the growth media and the plant's growth potential. This study was conducted in the Microbiology Laboratory of the Faculty of Biology at Satya Wacana Christian University. Eichornia crassipes plans of similar size were grown in 450 mL of Hoaglands solution with Cr6+ 5 mg.L-1 in a container. The treatment in this study involves the addition of 50 mL (10% of the working volume) of Microbacterium sp SpR3 culture, Micrococcus luteus RT- 9, and a combination of both Cr6+-reducing bacteria. The reduction rate of Cr6+ concentration in the mixture of both types of bacteria reached 88.06%, which was higher compared to the control without the addition of the inoculum (87.08%). The inoculation of both Cr6+ reducing bacteria did not hibit the growth rate of the plants. The ability of Microbacterium sp. SpR3 and Micrococcus luteus RT-9 to reduce Cr6+ in liquid media can be employed in the bioremediation of Cr6+ contaminated wastewater.
Identification and production of indole-3-acetic acid by bacteria isolated from eco-enzymes V. IRENE MEITINIARTI; SRI KASMIYATI; EZRA EZRA; RULLY ADI NUGROHO; AGNA S. KRAVE
Biodiversitas Journal of Biological Diversity Vol. 26 No. 1 (2025)
Publisher : Society for Indonesian Biodiversity

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/biodiv/d260112

Abstract

Abstract. Meitiniarti VI, Kasmiyati S, Nugroho RA, Krave AS. 2025. Identification and production of indole-3-acetic acid by bacteria isolated from eco-enzymes. Biodiversitas 26: 111-117. Phytohormone-producing microorganisms are an essential component of biofertilizers. One example of a phytohormone is Indole Acetic Acid (IAA). IAA-producing microorganisms can be originated from various habitats. In this study, IAA-producing bacteria will be isolated from eco-enzyme, a liquid-fermented organic material rich in benefits and contains numerous microorganisms and IAA. The research involves processes of isolation, detection of cell and IAA production, and molecular identification. Through the processes of isolation and purification, 14 bacterial isolates were obtained. After testing their ability to produce IAA using a medium containing L-tryptophan and Salkowski's reagent, only 11 isolates were found to produce IAA. The DNA of these 11 isolates was isolated, amplified, sequenced, and identified through molecular analysis. The nucleotide sequences of these 11 bacterial isolates have been registered in the gene bank and assigned accession numbers PQ095569 to PQ095579. Based on alignment and phylogenetic tree analysis, the 11 isolates were grouped into three categories: the Bacillus group, consisting of Bacillus altitudinis, Bacillus subtilis, Bacillus licheniformis, Priestia megaterium, and Paenibacillus sp.; lactic acid bacteria, including Lacticaseibacillus paracasei and Lactiplantibacillus plantarum; and vibrio-shaped bacteria, including Vibrio sp. and Vibrio diazotrophicus. The Bacillus group (including Paenibacillus megaterium) could produce high levels of IAA. However, among the members of this group, P. megaterium exhibited the highest cell production capability and IAA production, with values of 2982.208 mg·L?¹ and 35.49 mg·L?¹, respectively. This high growth ability and IAA production make P. megaterium a promising candidate as an inoculum for use as a PGPR (Plant Growth-Promoting Rhizobacterium).
Co-Authors AGNA S. KRAVE ANDRIYANI DEA WULANDARI ATHALIA EUGENIA RUNTU Elizabeth Betty Elok Kristiani ELSA KRISTIANI PUTRI EZRA EZRA Ferdy S Rondonuwu Maria Marina Herawati RULLY ADI NUGROHO V. IRENE MEITINIARTI VINCENTIA IRENE MEITINIARTI