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Antibacterial activity and metabolite profiling of mangrove endophytic fungus Talaromyces adpressus from Rhizophora apiculata ANAK AGUNG GEDE INDRANINGRAT; PANDE PUTU CHRISTINE PUTRI PURNAMI; NI MADE AYU SUARDANI SINGAPURWA; MADE DHARMESTI WIJAYA
Biodiversitas Journal of Biological Diversity Vol. 27 No. 2 (2026)
Publisher : Society for Indonesian Biodiversity

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/biodiv/d270228

Abstract

Abstract. Indraningrat AAG, Purnami PPCP, Singapurwa NMAS, Wijaya MD. 2026. Antibacterial activity and metabolite profiling of mangrove endophytic fungus Talaromyces adpressus from Rhizophora apiculata. Biodiversitas 27 (2): d270228. https://doi.org/10.13057/biodiv/d270228. Antimicrobial resistance (AMR) continues to pose a major global health threat and has driven the exploration of under-studied ecosystems, including mangrove forests, as sources of bioactive microorganisms. Therefore, this study aimed to isolate and identify endophytic fungi associated with mangrove roots and to evaluate the antibacterial activity and GC-MS-based metabolite profile of a selected isolate against multidrug-resistant (MDR) bacterial pathogens. The isolate was identified based on morphological characteristics and confirmed by ITS rDNA sequencing, showing 100% similarity to Talaromyces adpressus. Crude ethyl acetate extract obtained from submerged fermentation culture was screened for antibacterial activity against multidrug-resistant (MDR) bacteria, including methicillin-resistant Staphylococcus aureus (MRSA) and extended-spectrum β-lactamase (ESBL)-producing Escherichia coli, Klebsiella pneumoniae, and Acinetobacter baumannii. Agar disc diffusion assays showed measurable inhibition zones of 13.22±1.13 mm (MRSA), 10.41±1.54 mm (ESBL-E. coli), 10.05±1.85 mm (ESBL-A. baumannii), and 9.98±0.11 mm (ESBL-K. pneumoniae). However, broth microdilution assays revealed minimum inhibitory and bactericidal concentrations exceeding 512 µg mL⁻¹ for all tested strains, indicating weak antibacterial potency of the crude extract in liquid culture. GC-MS profiling tentatively identified ten major metabolites, including fatty acids (lauric, myristic, palmitic, oleic acids), diketopiperazines [cyclo(L-Pro-L-Val), cyclo(Phe-Pro)], phenethyl alcohol, phenylacetic acid, 2,4-di-tert-butylphenol, and ergosterol, which have been reported to possess antimicrobial or signaling-modulatory properties. Overall, these findings expand the ecological record of T. adpressus in mangrove ecosystems and provide preliminary antibacterial screening and chemical profiling data, highlighting the need for further fractionation and compound-level validation in future studies. To the best of our knowledge, this is the first report of isolation and characterization of endophytic fungus T. adpressus A1RA from roots of R. apiculata Blume collected from the Ngurah Rai Mangrove Forest, Bali, Indonesia.
Co-Authors , I Nyoman Rudianta A A Made Semariyani A. A. Made Semariyani A. A. Made Semariyani A.A Made Semariyani A.A. Made Semariyani A.A. Made Semariyani A.A. Made Semariyani AA Made Semariyani Agata Viani Aida Firdaus Muhamad Nurul Azmi Aida Firdaus Muhammad Nurul Azmi Aida Firdaus Muhammad Nurul Azmi Amelia Putri Purnomo Amir Hinggiranja Anak Agung Ayu Kanaka Mutiara Laksmi Anak Agung Diah Apriyanti ANAK AGUNG GEDE INDRANINGRAT Anak Agung Gede Indraningrat Anak Agung Gede Indraningrat Anak Agung Made Semariyani Anak Agung Made Semariyani Anak Agung Made Semariyani Anak Agung Sagung Manik Chindrawati Anak Agung Sagung P Putri Risa Andriani Anak Agung Sagung Putri Risa Andriani Andika Umbu Tiba Andriani, Agung Sagung Putri Risa Andriani, Anak Agung Sagung Putri Risa Anom Sulistiawati Ni Putu Arandini, Putu Chiana Adi Ayu Ningtias Mas Puspitayanti Azmi, Aida Firdaus Muhamad Nurul Chelsia Wihelmina Edam Chindrawato, A.A. Sagung Manik Chinta Dewi, I Gusti Ayu Dalima, Yasniana Dalima DellaX’ma Nandari DellaX’ma Nandari DellaX’ma Nandari DellaX’Ma Nandari Desak Ketut Tristiana Sukmadewi Djelantik, Sang Ayu Made Agung Prasetiawati Edam, Chelsia Wihelmina Ela Tara Wini Bira Ela Tara Wini Bira Ernesia Kunigunda Lando Fadhilah Lamun @ Jailani Fransiska Sisilia Bheni G.S.S. Djarkasi Gede Yohanes Arygunartha Gek Dian Dharma Yanti Giman, Hermanus Grace Yohana Romauli Naibaho Gusti Agus Maha Putra Sanjaya Gusti Ngurah Oka Jiwantara Gusti Ngurah Oka Jiwantara Hermanus Giman I A.A Made Semariyani I Dewa Ayu Ketut Yunantariningsih I Dewa Ayu Ketut Yunantariningsih I Gede Ari Supastiawan I Gede Pasek Mangku I Gede Sutapa I Gede Sutapa I Gede Sutapa, I Gede I Gusti Agung Ayu Sucitra Ekaryani I Gusti Agus Maha Putra Sanjaya I Gusti Agus Maha Putra Sanjaya I Gusti Ayu Chinta Dewi I Gusti Bagus Udayana I Gusti Bagus Udayana I Gusti Made Arjana I Ketut Agung Sudewa I Ketut Agung Sudewa I Komang Budi Mulya I Made Griya Adi Parta I Made Griya Adi Parta I Made Kawan I Made Mardika I Nengah Suaria I Nengah Suaria I Nengah Suaria I Nyoman Rudianta I Nyoman Rudianta I Nyoman Rudianta I Nyoman Rudianta I Nyoman Rudianta I Nyoman Rudianta I Nyoman Rudianta I Putu Ajus Raditya Putra I Putu Candra I Putu Candra I Putu Candra I Putu Candra I Putu Candra I Putu Candra I Putu Candra I Putu Candra I Putu Candra I Putu Candra I Putu Candra I Putu Candra Suta Adnyana I Putu Candra, I Putu I Putu Yoga Ary Nugraha I Wayan Richo Yasa I Wayan Sudiarta I Wayan Sudiarta I Wayan Sudiarta I Wayan Sudiarta I Wayan Sudiarta I Wayan Sudiarta I Wayan Sudiarta I Wayan Sudiarta I Wayan Sudiarta I Wayan Wesna Astara (Scopus ID: 57211467012) I Wayan Wesna Astara (Scopus ID: 57211467012) I Wayan Winduyasa Ida Bagus Wayan Gunam Ignasius Edward Ileng Janurianti, Ni Made Defy Jiwantara, Gusti Ngurah Oka K. Agus Yogi Indrawan Kant, Mariam Lupita Ketut Agung Sudewa Komang Nita Wedaningsih Komang Nita Wedaningsih Komang Nita Wedaningsih Laksmi, A.A. Ayu Kanaka Mutiara Luh Kade Datrini Luh Suariani Luh Suariani Luh Suariani Luh Suariani Luh Suariani Luh Suariani, Luh Luh Suriati MADE DHARMESTI WIJAYA Manikam, Raseetha Vani Siva Maria Intan Claudia Yatub Maria Reinaldis Jebaut Subin Maria Reinaldis Jebaut Subin Mariam Lupita Kant Muhamad Hazim Bin Ahmad Nazari Mulia, I Komang Oki Budi N.M. Yudiastari Naratama, I Putu Ngurah Ni Komang Alit Astiari Ni Komang Armaeni Ni Komang Armaeni Ni Luh Putu Putri Setianingsih Ni Luh Putu Putri Setianingsih Ni Luh Putu Putri Setianingsih Ni Luh Putu Putri Setianingsih Ni Made Ayu Gemuh Rasa Astiti Ni Made Darmadi Ni Made Darmadi Ni Made Darmadi Ni Made Darmadi Ni Made Darmadi Ni Made Yudiastari Ni Made Yudiastari Ni Made Yudiastari, Ni Made Ni Nyoman Suartini Ni Putu Anom Sulistiawati Ni Putu Anom Sulistiawati Ni Putu Anom Sulistiawati, Ni Putu Anom Ni Putu Bella Trisna Dewi Ni Putu Bella Trisna Dewi Ni Putu Chiana Adi Arandini Ni Putu, Anom Sulistiawati Ni Wayan Eka Manik Astini Ni Wayan Eka Manik Astini Ni Wayan Nursini Ni Wayan Nursini Ni Wayan Nursini Ni Wayan Yulia Andriani Ni Wayan Yulia Andriani Oka Jiwantara Gusti Ngurah PANDE PUTU CHRISTINE PUTRI PURNAMI Parta, I Made Griya Adi Pavalee Chompoorat Tridtitanakiat Pranamya, I Agus Kerta Purwaningtyas Kusumaningsih Putri Risa Andriani, Anak Agung Sagung P Putri, , Ni Kadek Sintya Pradnyani Putu Chiana Adi Arandini Putu Diah Wahyuni Putu Diah Wahyuni Rama, Kade Nusde Sari Raseetha Vani Siva Manikam Rudianta, , I Nyoman Rudianta, I Nyoman Sahrial Sahrial Salensia Haryati Afons Saloko, Sartijo Sang Ayu Made Agung Prasetiawati Djelantik Sang Ayu Made Agung Prasetiawati Djelantik Sang Ayu Made Agung Prasetiawati Djelantik Sang Ayu Made Agung Prasetiawati Djelatik SAPUTRA, ARYA Satrijo Saloko SATRIYAS ILYAS Semariyani, A.A.Made Setianingsih, Ni Luh Putu Putri Sofia nggoweng Sofia nggoweng Sofia Utami Putri Sunarso Subin, Maria Reinaldis Jebaut Sudewa, I Ketut Agung Sudewa, Ketut Agung Sudewa, Ketut Agung Sudiarta, Wayan Tanjung Subrata Utami, Cahyaning Rini Viani, Agata Wibawa, Putu Rizky Ari Yasa Winduyasa, I Wayan Yan Tonga Yasa, I Wayan Sweca Yasniana Dalima Dalima Yohanes Lewa Yohanes Parlindungan Situmeang Yulianus Jordi Ziku Yunantariningsih, I Dewa Ayu Ketut Ziku, Yulianus Jordi