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Akbari SI, Prismantoro D, Permadi N, Rossiana N, Miranti M, Mispan MS, Mohamed Z, Doni F. Bioprospecting the roles of Trichoderma in alleviating plants' drought tolerance: Principles, mechanisms of action, and prospects. Microbiol Res 2024; 283:127665. [PMID: 38452552 DOI: 10.1016/j.micres.2024.127665] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2023] [Revised: 01/25/2024] [Accepted: 02/24/2024] [Indexed: 03/09/2024]
Abstract
Drought-induced stress represents a significant challenge to agricultural production, exerting adverse effects on both plant growth and overall productivity. Therefore, the exploration of innovative long-term approaches for addressing drought stress within agriculture constitutes a crucial objective, given its vital role in enhancing food security. This article explores the potential use of Trichoderma, a well-known genus of plant growth-promoting fungi, to enhance plant tolerance to drought stress. Trichoderma species have shown remarkable potential for enhancing plant growth, inducing systemic resistance, and ameliorating the adverse impacts of drought stress on plants through the modulation of morphological, physiological, biochemical, and molecular characteristics. In conclusion, the exploitation of Trichoderma's potential as a sustainable solution to enhance plant drought tolerance is a promising avenue for addressing the challenges posed by the changing climate. The manifold advantages of Trichoderma in promoting plant growth and alleviating the effects of drought stress underscore their pivotal role in fostering sustainable agricultural practices and enhancing food security.
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Affiliation(s)
- Sulistya Ika Akbari
- Department of Biology, Faculty of Mathematics and Natural Sciences, Universitas Padjadjaran, Jatinangor, West Java 45363, Indonesia
| | - Dedat Prismantoro
- Department of Biology, Faculty of Mathematics and Natural Sciences, Universitas Padjadjaran, Jatinangor, West Java 45363, Indonesia
| | - Nandang Permadi
- Doctorate Program in Biotechnology, Graduate School, Universitas Padjadjaran, Bandung, West Java 40132, Indonesia
| | - Nia Rossiana
- Department of Biology, Faculty of Mathematics and Natural Sciences, Universitas Padjadjaran, Jatinangor, West Java 45363, Indonesia
| | - Mia Miranti
- Department of Biology, Faculty of Mathematics and Natural Sciences, Universitas Padjadjaran, Jatinangor, West Java 45363, Indonesia
| | - Muhamad Shakirin Mispan
- Institute of Biological Sciences, Faculty of Science, Universiti Malaya, Kuala Lumpur 50603, Malaysia
| | - Zulqarnain Mohamed
- Institute of Biological Sciences, Faculty of Science, Universiti Malaya, Kuala Lumpur 50603, Malaysia
| | - Febri Doni
- Department of Biology, Faculty of Mathematics and Natural Sciences, Universitas Padjadjaran, Jatinangor, West Java 45363, Indonesia.
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2
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Permadi N, Nurzaman M, Doni F, Julaeha E. Elucidation of the composition, antioxidant, and antimicrobial properties of essential oil and extract from Citrus aurantifolia (Christm.) Swingle peel. Saudi J Biol Sci 2024; 31:103987. [PMID: 38617568 PMCID: PMC11007538 DOI: 10.1016/j.sjbs.2024.103987] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2023] [Revised: 03/29/2024] [Accepted: 04/04/2024] [Indexed: 04/16/2024] Open
Abstract
The most effective methodologies for generating Musa spp. explants involve the utilization of plant tissue culture micropropagation techniques. However, the pervasive challenge of microbial contamination significantly impedes the successful micropropagation of Musa spp. This study examined the antioxidant and antibacterial characteristics of the essential oil (LPO) and extract (LPE) obtained from the peel of Citrus aurantifolia. Additionally, we explored their mechanisms against common microbial contaminants in Musa spp. micropropagation. Using gas chromatography-mass spectrometry, we identified 28 components in LPO, with δ-limonene, β-pinene, citral, trans-citral, β-bisabolene, geranyl acetate, and α-pinene as the primary constituents. Meanwhile, liquid chromatography-mass spectrometry detected 17 components in LPE, highlighting nobiletin, tangeretin, scoparone, sinensetin, tetramethylscutellarein, 5-demethylnobiletin, and pyropheophorbide A as the predominant compounds. Evaluation using the DPPH and ABTS methods revealed the IC50 values for LPE at 0.66 ± 0.009 and 0.92 ± 0.012 mg/mL, respectively, indicating higher antioxidant activity compared to LPO, with IC50 values of 3.03 ± 0.019 and 4.27 ± 0.023 mg/mL using the same methods. Both LPO and LPE exhibited antimicrobial activities against all tested contaminant microorganisms through in vitro assays. Mechanistic investigations employing time-kill analysis, assessment of cell membrane integrity, and scanning electron microscopy (SEM) revealed changes in the morphological characteristics of the tested microbial contaminants, intensifying with increased concentration and exposure duration of LPO and LPE. These alterations led to substantial damage, including cell wall lysis, leakage of intracellular components, and subsequent cell death. Consequently, LPO and LPE emerge as promising alternatives for addressing microbial contamination in banana tissue cultures.
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Affiliation(s)
- Nandang Permadi
- Doctorate Program in Biotechnology, Graduate School, Universitas Padjadjaran, Bandung 40132, Indonesia
| | - Mohamad Nurzaman
- Department of Biology, Faculty of Mathematics and Natural Sciences, Universitas Padjadjaran, Jatinangor 45363, Indonesia
| | - Febri Doni
- Department of Biology, Faculty of Mathematics and Natural Sciences, Universitas Padjadjaran, Jatinangor 45363, Indonesia
| | - Euis Julaeha
- Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Padjadjaran, Jatinangor 45363, Indonesia
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3
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Azizah NS, Irawan B, Kusmoro J, Safriansyah W, Farabi K, Oktavia D, Doni F, Miranti M. Sweet Basil ( Ocimum basilicum L.)-A Review of Its Botany, Phytochemistry, Pharmacological Activities, and Biotechnological Development. Plants (Basel) 2023; 12:4148. [PMID: 38140476 PMCID: PMC10748370 DOI: 10.3390/plants12244148] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/03/2023] [Revised: 12/09/2023] [Accepted: 12/11/2023] [Indexed: 12/24/2023]
Abstract
An urgent demand for natural compound alternatives to conventional medications has arisen due to global health challenges, such as drug resistance and the adverse effects associated with synthetic drugs. Plant extracts are considered an alternative due to their favorable safety profiles and potential for reducing side effects. Sweet basil (Ocimum basilicum L.) is a valuable plant resource and a potential candidate for the development of pharmaceutical medications. A single pure compound or a combination of compounds exhibits exceptional medicinal properties, including antiviral activity against both DNA and RNA viruses, antibacterial effects against both Gram-positive and Gram-negative bacteria, antifungal properties, antioxidant activity, antidiabetic potential, neuroprotective qualities, and anticancer properties. The plant contains various phytochemical constituents, which mostly consist of linalool, eucalyptol, estragole, and eugenol. For centuries, community and traditional healers across the globe have employed O. basilicum L. to treat a wide range of ailments, including flu, fever, colds, as well as issues pertaining to digestion, reproduction, and respiration. In addition, the current research presented underscores the significant potential of O. basilicum-related nanotechnology applications in addressing diverse challenges and advancing numerous fields. This promising avenue of exploration holds great potential for future scientific and technological advancements, promising improved utilization of medicinal products derived from O. basilicum L.
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Affiliation(s)
- Nabilah Sekar Azizah
- Department of Biology, Faculty of Mathematics and Natural Sciences, Universitas Padjadjaran, Jatinangor 45363, Indonesia; (N.S.A.); (B.I.); (J.K.); (F.D.)
| | - Budi Irawan
- Department of Biology, Faculty of Mathematics and Natural Sciences, Universitas Padjadjaran, Jatinangor 45363, Indonesia; (N.S.A.); (B.I.); (J.K.); (F.D.)
| | - Joko Kusmoro
- Department of Biology, Faculty of Mathematics and Natural Sciences, Universitas Padjadjaran, Jatinangor 45363, Indonesia; (N.S.A.); (B.I.); (J.K.); (F.D.)
| | - Wahyu Safriansyah
- Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Padjadjaran, Jatinangor 45363, Indonesia; (W.S.); (K.F.)
| | - Kindi Farabi
- Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Padjadjaran, Jatinangor 45363, Indonesia; (W.S.); (K.F.)
| | - Dina Oktavia
- Department of Transdisciplinary, Graduate School, Universitas Padjadjaran, Bandung 40132, Indonesia;
| | - Febri Doni
- Department of Biology, Faculty of Mathematics and Natural Sciences, Universitas Padjadjaran, Jatinangor 45363, Indonesia; (N.S.A.); (B.I.); (J.K.); (F.D.)
| | - Mia Miranti
- Department of Biology, Faculty of Mathematics and Natural Sciences, Universitas Padjadjaran, Jatinangor 45363, Indonesia; (N.S.A.); (B.I.); (J.K.); (F.D.)
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4
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Doni F, Mispan MS. Editorial: Global excellence in plant science: Southeast Asia. Front Plant Sci 2023; 14:1285250. [PMID: 37746022 PMCID: PMC10515378 DOI: 10.3389/fpls.2023.1285250] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/29/2023] [Accepted: 09/04/2023] [Indexed: 09/26/2023]
Affiliation(s)
- Febri Doni
- Department of Biology, Faculty of Mathematics and Natural Sciences, Universitas Padjadjaran, West Java, Indonesia
| | - Muhamad Shakirin Mispan
- Institute of Biological Sciences, Faculty of Science, Universiti Malaya, Kuala Lumpur, Malaysia
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5
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Doni F, Safitri R, Suhaimi NSM, Miranti M, Rossiana N, Mispan MS, Anhar A, Uphoff N. Evaluating the underlying physiological and molecular mechanisms in the system of rice intensification performance with Trichoderma-rice plant symbiosis as a model system. Front Plant Sci 2023; 14:1214213. [PMID: 37692429 PMCID: PMC10484004 DOI: 10.3389/fpls.2023.1214213] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/29/2023] [Accepted: 08/14/2023] [Indexed: 09/12/2023]
Abstract
The system of rice intensification (SRI) is an extensively-researched and increasingly widely-utilized methodology for alleviating current constraints on rice production. Many studies have shown physiological and morphological improvements in rice plants induced by SRI management practices to be very similar to those that are associated with the presence of beneficial microbial endophytes in or around rice plants, especially their roots. With SRI methods, grain yields are increased by 25-100% compared to conventional methods, and the resulting plant phenotypes are better able to cope with biotic and abiotic stresses. SRI management practices have been shown to be associated with significant increases in the populations of certain microorganisms known to enhance soil health and plant growth, e.g., Azospirillum, Trichoderma, Glomus, and Pseudomonas. This article evaluates the effects of applying Trichoderma as a model microbe for assessing microbial growth-promotion, biological control activity, and modulation of gene expression under the conditions created by SRI practices. Information about the molecular changes and interactions associated with certain effects of SRI management suggests that these practices are enhancing rice plants' expression of their genetic potentials. More systematic studies that assess the effects of SRI methods respectively and collectively, compared with standard rice production methods, are needed to develop a more encompassing understanding of how SRI modifications of crops' growing environment elicit and contribute to more robust and more productive phenotypes of rice.
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Affiliation(s)
- Febri Doni
- Department of Biology, Faculty of Mathematics and Natural Sciences, Universitas Padjadjaran, Jatinangor, West Java, Indonesia
| | - Ratu Safitri
- Department of Biology, Faculty of Mathematics and Natural Sciences, Universitas Padjadjaran, Jatinangor, West Java, Indonesia
| | - Nurul Shamsinah Mohd Suhaimi
- Institute of Biological Sciences, Faculty of Science, University of Malaya, Kuala Lumpur, Malaysia
- Centre for Research in Biotechnology for Agriculture (CEBAR), University of Malaya, Kuala Lumpur, Malaysia
| | - Mia Miranti
- Department of Biology, Faculty of Mathematics and Natural Sciences, Universitas Padjadjaran, Jatinangor, West Java, Indonesia
| | - Nia Rossiana
- Department of Biology, Faculty of Mathematics and Natural Sciences, Universitas Padjadjaran, Jatinangor, West Java, Indonesia
| | - Muhamad Shakirin Mispan
- Institute of Biological Sciences, Faculty of Science, University of Malaya, Kuala Lumpur, Malaysia
- Centre for Research in Biotechnology for Agriculture (CEBAR), University of Malaya, Kuala Lumpur, Malaysia
| | - Azwir Anhar
- Department of Biology, Faculty of Mathematics and Natural Sciences, Universitas Negeri Padang, Padang, West Sumatra, Indonesia
| | - Norman Uphoff
- Department of Global Development, Cornell University, Ithaca, NY, United States
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Cheng A, Gajic G, Doni F. Editorial: Soil biota and climate smart crops. Front Plant Sci 2023; 14:1250831. [PMID: 37538065 PMCID: PMC10395117 DOI: 10.3389/fpls.2023.1250831] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Accepted: 07/11/2023] [Indexed: 08/05/2023]
Affiliation(s)
- Acga Cheng
- Institute of Biological Sciences, Faculty of Science, Universiti Malaya, Kuala Lumpur, Malaysia
| | - Gordana Gajic
- Department of Ecology, Institute for Biological Research `Sinisa Stankovic`, National Institute of Republic of Serbia, University of Belgrade, Belgrade, Serbia
| | - Febri Doni
- Department of Biology, Faculty of Mathematics and Natural Sciences, Universitas Padjadjaran, West Java, Indonesia
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Kalasuba K, Miranti M, Rahayuningsih SR, Safriansyah W, Syamsuri RRP, Farabi K, Oktavia D, Alhasnawi AN, Doni F. Red Mangrove ( Rhizophora stylosa Griff.)-A Review of Its Botany, Phytochemistry, Pharmacological Activities, and Prospects. Plants (Basel) 2023; 12:plants12112196. [PMID: 37299175 DOI: 10.3390/plants12112196] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2023] [Revised: 05/30/2023] [Accepted: 05/31/2023] [Indexed: 06/12/2023]
Abstract
Mangroves are ecologically significant plants in marine habitats that inhabit the coastlines of many countries. Being a highly productive and diverse ecosystem, mangroves are rich in numerous classes of phytochemicals that are of great importance in the field of pharmaceutical industries. The red mangrove (Rhizophora stylosa Griff.) is a common member of the Rhizophoraceae family and the dominant species in the mangrove ecosystem of Indonesia. R. stylosa mangrove species are rich in alkaloids, flavonoids, phenolic acids, tannins, terpenoids, saponins, and steroids, and are widely used in traditional medicine for anti-inflammatory, antibacterial, antioxidant, and antipyretic effects. This review aims to provide a comprehensive understanding of the botanical description, phytochemical profiles, pharmacological activities, and medicinal potentials of R. stylosa.
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Affiliation(s)
- Karina Kalasuba
- Department of Biology, Faculty of Mathematics and Natural Sciences, Universitas Padjadjaran, Jatinangor 45363, Indonesia
| | - Mia Miranti
- Department of Biology, Faculty of Mathematics and Natural Sciences, Universitas Padjadjaran, Jatinangor 45363, Indonesia
| | - Sri Rejeki Rahayuningsih
- Department of Biology, Faculty of Mathematics and Natural Sciences, Universitas Padjadjaran, Jatinangor 45363, Indonesia
| | - Wahyu Safriansyah
- Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Padjadjaran, Jatinangor 45363, Indonesia
| | | | - Kindi Farabi
- Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Padjadjaran, Jatinangor 45363, Indonesia
| | - Dina Oktavia
- Department of Transdisciplinary, Graduate School, Universitas Padjadjaran, Bandung 40132, Indonesia
| | - Arshad Naji Alhasnawi
- Department of Biology, College of Education for Pure Sciences, Al-Muthanna University, Samawah 66001, Iraq
| | - Febri Doni
- Department of Biology, Faculty of Mathematics and Natural Sciences, Universitas Padjadjaran, Jatinangor 45363, Indonesia
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8
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Syamsuri RRP, Aprilia DA, Fakhira AY, Nabilah AS, Akbari SI, Rossiana N, Doni F. Prospecting the roles of Trichoderma in sustainable crop production: biotechnological developments and future prospects. Bioscience 2022. [DOI: 10.24036/0202262119346-0-00] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
The filamentous fungal genus Trichoderma are reported to have a significant impact on the growth and development of various crops. Trichoderma species which are residing in the rhizosphere of crops, and as fungal symbionts living within plant tissues have multiple roles in enhancing crops’ agronomic traits, fitness, growth and yield, and in modulating their tolerance towards biotic and abiotic stresses. This article discusses on the potential and impact of Trichoderma in improving the development and production of crops, as well the mechanism of Trichoderma in improving the development and production of crops. This article also highlights the ability of Trichoderma for improving crops’ tolerance to abiotic and biotic stresses. Prospectively, the use of Trichoderma inoculants offers some new, cost-effective, and more eco-friendly practices for increasing crops’ production.
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Lo Russo G, Agostoni PG, Campodonico J, Junod D, Carulli E, Gaudenzi Asinelli M, Doni F, Bonomi A. Role of impaired iron transport on exercise performance in heart failure patients. Eur Heart J 2022. [DOI: 10.1093/eurheartj/ehac544.755] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Aims
Impaired iron transport (IIT) occurs frequently in heart failure (HF) patients, even in the absence of anaemia and it is associated with a poor quality of life and prognosis. The impact of IIT on exercise capacity, as assessed by the cardiopulmonary exercise test (CPET), in HF is at present unknown. The aim of this article is to evaluate in HF patients the impact on exercise performance of IIT, defined as transferrin saturation (TSAT) <20%.
Methods and results
We collected data of 676 patients hospitalised for HF. All underwent laboratory analysis, cardiac ultrasound, and CPET. Patients were grouped by the presence/absence of IIT and anaemia (haemoglobin <13 and <12 g/dL in male and female, respectively): Group 1 (G1) no anaemia, no IIT; Group 2 (G2) anaemia, no IIT; Group 3 (G3) no anaemia, IIT; Group 4 (G4) anaemia and IIT. Peak oxygen uptake (peakVO2) reduced from G1 to G3 and from G2 to G4 (G1: 1266±497 mL/min, G2: 1011±385 mL/min, G3: 1041±395 mL/min, G4: 833±241 mL/min), whereas the ventilation to carbon dioxide relationship slope (VE/VCO2 slope) increased (G1: 31.8±7.5, G2: 34.5±7.4, G3: 36.1±10.2, G4: 37.5±8.4). At multivariate regression analysis, peakVO2 independent predictors were anaemia, brain natriuretic peptide (BNP), and left ventricular ejection fraction, whereas VE/VCO2 slope independent predictors were IIT and BNP.
Conclusions
In HF IIT is associated with exercise performance impairment independently from anaemia, and it is a predictor of elevated VE/VCO2 slope, a pivotal index of HF prognosis.
Funding Acknowledgement
Type of funding sources: Private hospital(s). Main funding source(s): Centro cardiologico Monzino, Italy
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Affiliation(s)
- G Lo Russo
- IRCCS Monzino Cardiology Center , Milan , Italy
| | | | | | - D Junod
- IRCCS Monzino Cardiology Center , Milan , Italy
| | - E Carulli
- IRCCS Monzino Cardiology Center , Milan , Italy
| | | | - F Doni
- IRCCS Monzino Cardiology Center , Milan , Italy
| | - A Bonomi
- IRCCS Monzino Cardiology Center , Milan , Italy
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10
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Abdullah NS, Doni F, Ooi CK, Mispan MS, Saiman MZ, Mohd Yusuf Y, Mohd Suhaimi NS. The diversity of rhizospheric bacterial communities associated with Trichoderma-treated rice fields. Lett Appl Microbiol 2022; 75:1645-1650. [PMID: 36073093 DOI: 10.1111/lam.13832] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2022] [Accepted: 09/02/2022] [Indexed: 11/29/2022]
Abstract
Microbial-based fertilizer has been widely used as a healthier and better alternative to agrochemical products. However, the effects of biofertilizers on the rhizospheric microbiota has rarely been investigated. Thus, the aim of this study was to investigate the effects of symbiotic fungus Trichoderma asperellum SL2-based inoculant on the soil bacterial population through next generation sequencing using a metabarcoding approach. The treatments plots were treated with T. asperellum SL2 spore suspension, while the control plots were treated with sterilized distilled water. The results showed similar bacterial microbiome profiles in the soil of control and T. asperellum SL2-treated plots. In conclusion, the application of the T. asperellum SL2 inoculant had not exerted negative impact towards the bacterial population as similar observation was reflected in control plots. Nonetheless, future research should be conducted to investigate the effects of repeated application of T. asperellum SL2 over a longer period on the rice microbiota communities.
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Affiliation(s)
| | - Febri Doni
- Department of Biology, Faculty of Mathematics and Natural Sciences, Universitas Padjadjaran, Jatinangor 45363, West Java, Indonesia
| | - Chua Kah Ooi
- Centre for Research in Biotechnology for Agriculture (CEBAR), University of Malaya, Kuala Lumpur, 50603, Malaysia
| | - Muhamad Shakirin Mispan
- Centre for Research in Biotechnology for Agriculture (CEBAR), University of Malaya, Kuala Lumpur, 50603, Malaysia.,Institute of Biological Sciences, Faculty of Science, University of Malaya, Kuala Lumpur, 50603, Malaysia
| | - Mohd Zuwairi Saiman
- Centre for Research in Biotechnology for Agriculture (CEBAR), University of Malaya, Kuala Lumpur, 50603, Malaysia.,Institute of Biological Sciences, Faculty of Science, University of Malaya, Kuala Lumpur, 50603, Malaysia
| | - Yusmin Mohd Yusuf
- Centre for Research in Biotechnology for Agriculture (CEBAR), University of Malaya, Kuala Lumpur, 50603, Malaysia.,Centre for Foundation Studies in Science, University of Malaya, 50603, Kuala Lumpur, Malaysia
| | - Nurul Shamsinah Mohd Suhaimi
- Centre for Research in Biotechnology for Agriculture (CEBAR), University of Malaya, Kuala Lumpur, 50603, Malaysia.,Institute of Biological Sciences, Faculty of Science, University of Malaya, Kuala Lumpur, 50603, Malaysia
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11
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Doni F, Suhaimi NSM, Mispan MS, Fathurrahman F, Marzuki BM, Kusmoro J, Uphoff N. Microbial Contributions for Rice Production: From Conventional Crop Management to the Use of 'Omics' Technologies. Int J Mol Sci 2022; 23:737. [PMID: 35054923 PMCID: PMC8775878 DOI: 10.3390/ijms23020737] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2021] [Revised: 01/03/2022] [Accepted: 01/08/2022] [Indexed: 12/26/2022] Open
Abstract
Rice, the main staple food for about half of the world's population, has had the growth of its production stagnate in the last two decades. One of the ways to further improve rice production is to enhance the associations between rice plants and the microbiome that exists around, on, and inside the plant. This article reviews recent developments in understanding how microorganisms exert positive influences on plant growth, production, and health, focusing particularly on rice. A variety of microbial species and taxa reside in the rhizosphere and the phyllosphere of plants and also have multiple roles as symbiotic endophytes while living within plant tissues and even cells. They alter the morphology of host plants, enhance their growth, health, and yield, and reduce their vulnerability to biotic and abiotic stresses. The findings of both agronomic and molecular analysis show ways in which microorganisms regulate the growth, physiological traits, and molecular signaling within rice plants. However, many significant scientific questions remain to be resolved. Advancements in high-throughput multi-omics technologies can be used to elucidate mechanisms involved in microbial-rice plant associations. Prospectively, the use of microbial inoculants and associated approaches offers some new, cost-effective, and more eco-friendly practices for increasing rice production.
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Affiliation(s)
- Febri Doni
- Department of Biology, Faculty of Mathematics and Natural Sciences, Universitas Padjadjaran, Jatinangor 45363, West Java, Indonesia; (B.M.M.); (J.K.)
| | - Nurul Shamsinah Mohd Suhaimi
- Institute of Biological Sciences, Faculty of Science, University of Malaya, Kuala Lumpur 50603, Malaysia; (N.S.M.S.); (M.S.M.)
| | - Muhamad Shakirin Mispan
- Institute of Biological Sciences, Faculty of Science, University of Malaya, Kuala Lumpur 50603, Malaysia; (N.S.M.S.); (M.S.M.)
- Centre for Research in Biotechnology for Agriculture (CEBAR), University of Malaya, Kuala Lumpur 50603, Malaysia
| | - F Fathurrahman
- Department of Agrotechnology, Faculty of Agriculture, Universitas Islam Riau, Pekanbaru 28284, Indonesia;
| | - Betty Mayawatie Marzuki
- Department of Biology, Faculty of Mathematics and Natural Sciences, Universitas Padjadjaran, Jatinangor 45363, West Java, Indonesia; (B.M.M.); (J.K.)
| | - Joko Kusmoro
- Department of Biology, Faculty of Mathematics and Natural Sciences, Universitas Padjadjaran, Jatinangor 45363, West Java, Indonesia; (B.M.M.); (J.K.)
| | - Norman Uphoff
- SRI International Network and Resources Center, Cornell University, Ithaca, NY 14853, USA;
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12
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Harman G, Khadka R, Doni F, Uphoff N. Benefits to Plant Health and Productivity From Enhancing Plant Microbial Symbionts. Front Plant Sci 2021; 11:610065. [PMID: 33912198 PMCID: PMC8072474 DOI: 10.3389/fpls.2020.610065] [Citation(s) in RCA: 39] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/24/2020] [Accepted: 11/20/2020] [Indexed: 05/24/2023]
Abstract
Plants exist in close association with uncountable numbers of microorganisms around, on, and within them. Some of these endophytically colonize plant roots. The colonization of roots by certain symbiotic strains of plant-associated bacteria and fungi results in these plants performing better than plants whose roots are colonized by only the wild populations of microbes. We consider here crop plants whose roots are inhabited by introduced organisms, referring to them as Enhanced Plant Holobionts (EPHs). EPHs frequently exhibit resistance to specific plant diseases and pests (biotic stresses); resistance to abiotic stresses such as drought, cold, salinity, and flooding; enhanced nutrient acquisition and nutrient use efficiency; increased photosynthetic capability; and enhanced ability to maintain efficient internal cellular functioning. The microbes described here generate effects in part through their production of Symbiont-Associated Molecular Patterns (SAMPs) that interact with receptors in plant cell membranes. Such interaction results in the transduction of systemic signals that cause plant-wide changes in the plants' gene expression and physiology. EPH effects arise not only from plant-microbe interactions, but also from microbe-microbe interactions like competition, mycoparasitism, and antibiotic production. When root and shoot growth are enhanced as a consequence of these root endophytes, this increases the yield from EPH plants. An additional benefit from growing larger root systems and having greater photosynthetic capability is greater sequestration of atmospheric CO2. This is transferred to roots where sequestered C, through exudation or root decomposition, becomes part of the total soil carbon, which reduces global warming potential in the atmosphere. Forming EPHs requires selection and introduction of appropriate strains of microorganisms, with EPH performance affected also by the delivery and management practices.
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Affiliation(s)
- Gary Harman
- Department of Plant Pathology, Cornell University, Geneva, NY, United States
| | - Ram Khadka
- Department of Plant Pathology, The Ohio State University, Columbus, OH, United States
- Nepal Agricultural Research Council, Directorate of Agricultural Research, Banke, Nepal
| | - Febri Doni
- Institute of Biological Sciences, University of Malaya, Kuala Lumpur, Malaysia
| | - Norman Uphoff
- CALS International Agriculture Programs, Cornell University, Ithaca, NY, United States
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Harman GE, Doni F, Khadka RB, Uphoff N. Endophytic strains of Trichoderma increase plants' photosynthetic capability. J Appl Microbiol 2021; 130:529-546. [PMID: 31271695 DOI: 10.1111/jam.14368] [Citation(s) in RCA: 51] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2019] [Revised: 06/15/2019] [Accepted: 06/20/2019] [Indexed: 12/17/2022]
Abstract
The world faces two enormous challenges that can be met, at least in part and at low cost, by making certain changes in agricultural practices. There is need to produce enough food and fibre for a growing population in the face of adverse climatic trends, and to remove greenhouse gases to avert the worst consequences of global climate change. Improving photosynthetic efficiency of crop plants can help meet both challenges. Fortuitously, when crop plants' roots are colonized by certain root endophytic fungi in the genus Trichoderma, this induces up-regulation of genes and pigments that improve the plants' photosynthesis. Plants under physiological or environmental stress suffer losses in their photosynthetic capability through damage to photosystems and other cellular processes caused by reactive oxygen species (ROS). But certain Trichoderma strains activate biochemical pathways that reduce ROS to less harmful molecules. This and other mechanisms described here make plants more resistant to biotic and abiotic stresses. The net effect of these fungi's residence in plants is to induce greater shoot and root growth, increasing crop yields, which will raise future food production. Furthermore, if photosynthesis rates are increased, more CO2 will be extracted from the atmosphere, and enhanced plant root growth means that more sequestered C will be transferred to roots and stored in the soil. Reductions in global greenhouse gas levels can be accelerated by giving incentives for climate-friendly carbon farming and carbon cap-and-trade programmes that reward practices transferring carbon from the atmosphere into the soil, also enhancing soil fertility and agricultural production.
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Affiliation(s)
| | - F Doni
- Institute of Biological Sciences, Faculty of Science, University of Malaya, Kuala Lumpur, Malaysia
| | - R B Khadka
- Department of Plant Pathology, The Ohio State University, Wooster, OH, USA
- Nepal Agricultural Research Council, Kathmandu, Nepal
| | - N Uphoff
- College of Agriculture and Life Sciences, Cornell University, Ithaca, NY, USA
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Anhar A, Putri DHI, Doni F, Advinda L. Respon Pertumbuhan Benih Padi Varietas Anak Daro Asal Solok Terhadap Isolat Trichoderma Indeginous. Bioscience 2020. [DOI: 10.24036/0202041108377-0-00] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
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Aziz MFBA, Mispan MSB, Doni F. Organic Food Policy and Regulation in Malaysia: Development and Challenges. Regulatory Issues in Organic Food Safety in the Asia Pacific 2020:151-170. [DOI: 10.1007/978-981-15-3580-2_10] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
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Doni F, Mispan MS, Suhaimi NSM, Ishak N, Uphoff N. Roles of microbes in supporting sustainable rice production using the system of rice intensification. Appl Microbiol Biotechnol 2019. [PMID: 31101941 DOI: 10.1007/s00253-019-09879-09879-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/01/2023]
Abstract
The system of rice intensification (SRI) is an agroecological approach to rice cultivation that seeks to create optimal conditions for healthy plant growth by minimizing inter-plant competition, transplanting widely spaced young single seedlings, and optimizing favorable soil conditions with organic amendments, increased soil aeration by weeding, and controlled water management. These practices improve rice plant growth with yields up to three times more than with conventional cultivation methods, and increase crop resilience under biotic and abiotic stresses. This review discusses the roles of beneficial microbes in improving rice plant growth, yield, and resilience when SRI practices are used, and how these modifications in plant, soil, water, and nutrient management affect the populations and diversity of soil microorganisms. Mechanisms whereby symbiotic microbes support rice plants' growth and performance are also discussed.
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Affiliation(s)
- Febri Doni
- Institute of Biological Sciences, Faculty of Science, University of Malaya, 50603, Kuala Lumpur, Malaysia.
| | - Muhamad Shakirin Mispan
- Institute of Biological Sciences, Faculty of Science, University of Malaya, 50603, Kuala Lumpur, Malaysia.
- Centre for Research in Biotechnology for Agriculture (CEBAR), University of Malaya, 50603, Kuala Lumpur, Malaysia.
| | | | - Nazri Ishak
- Institute of Biological Sciences, Faculty of Science, University of Malaya, 50603, Kuala Lumpur, Malaysia
| | - Norman Uphoff
- SRI International Network and Resources Center, Cornell University, Ithaca, NY, 14853, USA
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Doni F, Mispan MS, Suhaimi NSM, Ishak N, Uphoff N. Roles of microbes in supporting sustainable rice production using the system of rice intensification. Appl Microbiol Biotechnol 2019; 103:5131-5142. [PMID: 31101941 DOI: 10.1007/s00253-019-09879-9] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2019] [Revised: 04/24/2019] [Accepted: 04/26/2019] [Indexed: 10/26/2022]
Abstract
The system of rice intensification (SRI) is an agroecological approach to rice cultivation that seeks to create optimal conditions for healthy plant growth by minimizing inter-plant competition, transplanting widely spaced young single seedlings, and optimizing favorable soil conditions with organic amendments, increased soil aeration by weeding, and controlled water management. These practices improve rice plant growth with yields up to three times more than with conventional cultivation methods, and increase crop resilience under biotic and abiotic stresses. This review discusses the roles of beneficial microbes in improving rice plant growth, yield, and resilience when SRI practices are used, and how these modifications in plant, soil, water, and nutrient management affect the populations and diversity of soil microorganisms. Mechanisms whereby symbiotic microbes support rice plants' growth and performance are also discussed.
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Affiliation(s)
- Febri Doni
- Institute of Biological Sciences, Faculty of Science, University of Malaya, 50603, Kuala Lumpur, Malaysia.
| | - Muhamad Shakirin Mispan
- Institute of Biological Sciences, Faculty of Science, University of Malaya, 50603, Kuala Lumpur, Malaysia. .,Centre for Research in Biotechnology for Agriculture (CEBAR), University of Malaya, 50603, Kuala Lumpur, Malaysia.
| | | | - Nazri Ishak
- Institute of Biological Sciences, Faculty of Science, University of Malaya, 50603, Kuala Lumpur, Malaysia
| | - Norman Uphoff
- SRI International Network and Resources Center, Cornell University, Ithaca, NY, 14853, USA
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Doni F, Zain CRCM, Isahak A, Fathurrahman F, Anhar A, Mohamad WNW, Yusoff WMW, Uphoff N. A simple, efficient, and farmer-friendly Trichoderma-based biofertilizer evaluated with the SRI Rice Management System. ACTA ACUST UNITED AC 2017. [DOI: 10.1007/s13165-017-0185-7] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Doni F, Isahak A, Che Mohd Zain CR, Mohd Ariffin S, Wan Mohamad WN, Wan Yusoff WM. Formulation of Trichoderma sp. SL2 inoculants using different carriers for soil treatment in rice seedling growth. Springerplus 2014; 3:532. [PMID: 25279323 PMCID: PMC4174552 DOI: 10.1186/2193-1801-3-532] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/11/2014] [Accepted: 09/09/2014] [Indexed: 11/10/2022]
Abstract
BACKGROUND Trichoderma sp. SL2 has been previously reported to enhance rice germination, vigour, growth and physiological characteristics. The use of Potato Dextrose Agar as carrier of Trichoderma sp. SL2 inoculant is not practical for field application due to its short shelf life and high cost. This study focuses on the use of corn and sugarcane bagasse as potential carriers for Trichoderma sp. SL2 inoculants. FINDINGS A completely randomized design was applied for this study. Trichoderma sp. SL2 suspension mixed with corn and sugarcane bagasse were used as treatment mixture in soil. Growth parameters including rice seedling height, root length, wet weight, leaf number and biomass were measured and compared to control. The results showed that Trichoderma sp. SL2 mixed with corn significantly enhanced rice seedlings root length, wet weight and biomass compared to Trichoderma sp. SL2 mixed with sugarcane bagasse and control. CONCLUSION Corn can be a potential carrier for Trichoderma spp. inoculants for field application.
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Affiliation(s)
- Febri Doni
- School of Biosciences and Biotechnology, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor D.E, Malaysia
| | - Anizan Isahak
- School of Environmental and Natural Resources Sciences, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor D.E, Malaysia
| | - Che Radziah Che Mohd Zain
- School of Biosciences and Biotechnology, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor D.E, Malaysia
| | | | | | - Wan Mohtar Wan Yusoff
- School of Biosciences and Biotechnology, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor D.E, Malaysia
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Doni F, Anizan I, Radziah CC, Ahmed WNW, Ashari A, Suryadi E, Yusoff WMW. Enhanced Rice Seedling Growth by Clostridium and Pseudomonas. ACTA ACUST UNITED AC 2014. [DOI: 10.3923/biotech.2014.186.189] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Doni F, Isahak A, Che Mohd Zain CR, Wan Yusoff WM. Physiological and growth response of rice plants (Oryza sativa L.) to Trichoderma spp. inoculants. AMB Express 2014; 4:45. [PMID: 24949276 PMCID: PMC4052627 DOI: 10.1186/s13568-014-0045-8] [Citation(s) in RCA: 54] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2014] [Accepted: 05/04/2014] [Indexed: 11/11/2022] Open
Abstract
Trichoderma spp., a known beneficial fungus is reported to have several mechanisms to enhance plant growth. In this study, the effectiveness of seven isolates of Trichoderma spp. to promote growth and increase physiological performance in rice was evaluated experimentally using completely randomized design under greenhouse condition. This study indicated that all the Trichoderma spp. isolates tested were able to increase several rice physiological processes which include net photosynthetic rate, stomatal conductance, transpiration, internal CO2 concentration and water use efficiency. These Trichoderma spp. isolates were also able to enhance rice growth components including plant height, leaf number, tiller number, root length and root fresh weight. Among the Trichoderma spp. isolates, Trichoderma sp. SL2 inoculated rice plants exhibited greater net photosynthetic rate (8.66 μmolCO2 m−2 s−1), internal CO2 concentration (336.97 ppm), water use efficiency (1.15 μmoCO2/mmoH2O), plant height (70.47 cm), tiller number (12), root length (22.5 cm) and root fresh weight (15.21 g) compared to the plants treated with other Trichoderma isolates tested. We conclude that beneficial fungi can be used as a potential growth promoting agent in rice cultivation.
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Doni F, Manfredi M, Piemonti C, Staffiere E, Todd S, Rimondini A, Fiorentini C. New onset atrial flutter termination by overdrive transoesophageal pacing: effects of different protocols of stimulation. Europace 2000; 2:292-6. [PMID: 11194595 DOI: 10.1053/eupc.2000.0126] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Abstract
AIM We evaluated the effect of different stimulation protocols on atrial flutter interruption by transoesophageal pacing. METHODS AND RESULTS Eighty patients with new onset atrial flutter were randomized into four groups. Pacing was attempted under the following conditions: with short bursts (5 s), without treatment (group A) and after oral administration of propafenone 600 mg (group B); with prolonged bursts (30 s), without treatment (group C) and after oral administration of propafenone 600 mg (group D). Pacing interrupted atrial flutter in 20% of patients in A, 55% in B, 50% in C and 85% in D. The use of longer bursts gave better results both in patients without treatment (P < 0.05: C vs A) and in patients with propafenone (P < 0.05: D vs B). Comparing groups with the same stimulation protocol, we observed a better response in patients treated with propafenone (P < 0.05: B vs A and D vs C). In the groups without treatment the use of shorter bursts was associated with a lower induction of stable atrial fibrillation (three vs nine episodes), in the groups on propafenone no differences were observed (one vs one episode). CONCLUSIONS We conclude that the association of propafenone with long bursts gives the best result for interruption of new onset atrial flutter by transoesophageal pacing.
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Affiliation(s)
- F Doni
- Department of Cardiology and Coronary Unit, Policlinico San Pietro, Via Forlanini, 15, 24036 Ponte San Pietro, Bergamo, Italy
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Doni F, Staffiere E, Manfredi M, Piemonti C, Todd S, Rimondini A, Fiorentini C. Type II atrial flutter interruption with transesophageal pacing: use of propafenone and possible change of the substrate. Pacing Clin Electrophysiol 1996; 19:1958-61. [PMID: 8945077 DOI: 10.1111/j.1540-8159.1996.tb03261.x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Type II atrial flutter (AFII) is an arrhythmia which usually cannot be interrupted by atrial pacing: the underlying mechanism is considered to be a leading circle without an excitable gap. We investigated whether the administration of propafenone, an antiarrhythmic drug, which primarily decreases conduction velocity, has a beneficial effect on AFII interruption using transesophageal pacing. Twelve patients with an AFII were randomized into 2 groups in which pacing was performed without treatment (group A) or two hours after the administration of 600 mg of oral propafenone (group B). Sinus rhythm was attained in 0 of 6 patients in group A and in 4 of 6 patients in group B (P < 0.05). The baseline mean cycle length was the same in both groups (175 +/- 7 (A) vs 168 +/- 8 ms (B); it lengthened significantly after the administration of propafenone (219 +/- 33 vs 168 +/- 8 ms; P < 0.05). Propafenone did not significantly lengthen the cycle in the two patients in whom interruption of the arrhythmia was impossible. Our data show that propafenone has a facilitating effect on atrial pacing only when it significantly prolongs the cycle length of the arrhythmia, possible expression of a conversion of AFII into type I, with an anatomical substrate and an excitable gap allowing arrhythmia capture and interruption. In the two patients in whom sinus rhythm was not restored, the absence of a direct dependence of the cycle length on the change in conduction velocity induced by propafenone may be explained by the persistence of a functionally determined circuit, resistant to atrial pacing.
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Affiliation(s)
- F Doni
- Department of Cardiology, Policlinico San Pietro, Ponte San Pietro, Bergamo, Italy
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Doni F, Kheir A, Manfredi M, Piemonti C, Staffiere E, Todd S, Rimondini A. [Facilitating effect of propafenone pretreatment in the interruption of atrial flutter by transesophageal pacing]. Cardiologia 1996; 41:135-140. [PMID: 8674092] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Transesophageal atrial pacing is effective in the interruption of atrial flutter, and being simple and minimally invasive, is easily performed even on outpatients. The influence of antiarrhythmic drugs on this procedure is controversial. We investigated whether the administration of oral propafenone may facilitate the procedure. Thirty patients with type I atrial flutter were randomized into two groups in which transesophageal pacing was attempted, respectively, without treatment (Group A) and after oral administration of propafenone 600 mg (Group B). Transesophageal pacing was effective in interrupting atrial flutter in 53% (8/15) of patients in Group A and in 85% (13/15) of patients in Group B. A significant lengthening of the flutter cycle was observed in patients treated with propafenone (261 +/- 23 vs 217 +/- 25 ms, p < 0.01). Sinus rhythm resumed at a shorter paced cycle in patients of Group A (166 +/- 13 vs 187 +/- 14 ms, p < 0.01). The transesophageal threshold for stable atrial capture was significantly lower in Group A (20.5 +/- 0.2 vs 23.3 +/- 1.2 mA, p < 0.01). In no patient the threshold for atrial capture was higher than the pain threshold. We did not observe abrupt enhancement of atrioventricular conduction. We can conclude that propafenone is effective and safe when used with transesophageal pacing in the termination of atrial flutter. The depressing effect of the drug on intraatrial conduction and the possible stabilizing effect on the reentry circuit appear to be outweighed by the positive effect of propafenone on the excitable gap of the circuit, facilitating its capture and account for the beneficial effect of the drug on arrhythmia termination.
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Affiliation(s)
- F Doni
- Reparto di Cardiologia e UTIC, Policlinico San Pietro
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Doni F, Kheir A, Manfredi M, Piemonti C, Staffiere E, Rimondini A. [Alcoholic cardiomyopathy in the initial phase: the earliness of an arrhythmic substrate in relation to Doppler echocardiographic changes]. Cardiologia 1996; 41:69-70. [PMID: 8697473] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Affiliation(s)
- F Doni
- Reparto di Cardiologia e UTIC, Policlinico San Pietro, Ponte San Pietro, BG
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Doni F, Della Bella P, Kheir A, Manfredi M, Piemonti C, Staffiere E, Rimondini A, Fiorentini C. Atrial flutter termination by overdrive transesophageal pacing and the facilitating effect of oral propafenone. Am J Cardiol 1995; 76:1243-6. [PMID: 7503004 DOI: 10.1016/s0002-9149(99)80350-6] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Transesophageal overdrive atrial pacing is effective and safe for atrial flutter termination. The influence of antiarrhythmic drug therapy on this procedure is controversial. In this study, we investigated whether oral propafenone may facilitate this procedure. Thirty patients with type I atrial flutter were randomized into 2 groups in which transesophageal pacing was attempted: group A, without treatment; and group B, after oral administration of propafenone 600 mg. Transesophageal pacing was effective in interrupting atrial flutter in 53% of patients (8 of 15) in group A and in 87% of patients (13 of 15) in group B. A significant lengthening of the flutter cycle was observed with respect to the baseline in patients given propafenone (261 +/- 23 vs 217 +/- 25, p < 0.01). Sinus rhythm resumed at a shorter paced cycle in group A patients (166 +/- 13 vs 187 +/- 14 ms, p < 0.01). The transesophageal threshold for stable atrial capture was significantly lower in group A (20.5 +/- 0.2 vs 23.3 +/- 1.2, p < 0.01). In no patient was the threshold for atrial capture higher than the pain threshold. We did not observe abrupt enhancement of atrioventricular conduction. We conclude that propafenone is effective and safe when used with transesophageal pacing in the termination of atrial flutter. The slowing effect of the drug on intraatrial conduction and the possible stabilizing effect on the reentry circuit appear to be outweighed by the positive effect of propafenone on the excitable gap of the circuit, facilitating its capture and accounting for the beneficial effect of the drug on arrhythmia termination.
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Affiliation(s)
- F Doni
- Cardiology Department, Policlinico San Pietro, Ponte San Pietro, Bergamo, Italy
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Della Bella P, Marenzi G, Tondo C, Doni F, Lauri G, Grazi S, Guazzi MD. Effects of disopyramide on cycle length, effective refractory period and excitable gap of atrial flutter, and relation to arrhythmia termination by overdrive pacing. Am J Cardiol 1989; 63:812-6. [PMID: 2929438 DOI: 10.1016/0002-9149(89)90048-9] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
The administration of class IA antiarrhythmic drugs facilities termination of atrial flutter by overdrive pacing. To investigate the electrophysiologic determinants of this effect, changes in the cycle length, the effective refractory period and the excitable gap of spontaneous type I atrial flutter were studied in 11 patients given intravenous disopyramide (3 mg/kg in 1 hour). After drug infusion, the cycle length of atrial flutter increased from 238 +/- 26 to 298 +/- 38 ms (+25%; p less than 0.001) and the effective refractory period prolonged from 169 +/- 19 to 192 +/- 25 ms (+14%; p less than 0.01). The excitable gap prolonged from 62 +/- 16 to 96 +/- 27 ms (+55%; p less than 0.001). Atrial flutter was terminated by overdrive pacing (mean cycle 203) in 10 of 11 patients; in 1 patient atrial fibrillation resulted after high rate stimulation. In the setting of an anatomically defined reentry circuit, as in type I atrial flutter, the administration of disopyramide prolongs both cycle length and refractory period. The finding of an increased excitable gap suggests that the drug exerts its prominent effect by depressing conduction velocity. A wider excitable gap allows easier penetration of the stimulus in the reentry circuit and accounts for the beneficial effects of type IA antiarrhythmic drugs on the termination of atrial flutter by overdrive pacing.
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Della Bella P, Marenzi G, Doni F, Tondo C, Cipolla C, Grazi S, Rimondini A, Salvioni A, Guazzi MD. [Efficacy of disopyramide in the treatment of atrial flutter with overdrive pacing]. Cardiologia 1989; 34:247-52. [PMID: 2743366] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Thirty patients with long-standing (mean 30 days) type I atrial flutter (AF) were treated with overdrive atrial pacing. To evaluate the effect of pretreatment with disopyramide (DISO), the study population was divided into 3 groups of 10 patients each: no therapy (Group A); intravenous DISO (maximum dose 250 mg in 1 hour) (Group B), oral DISO (400 mg/day for 4 days) (Group C). The mean cycle length of AF was 215 +/- 24 ms in Group A, 222 +/- 28 in B and 224 +/- 11 in C (NS). After DISO, AF cycle length increased to 287 +/- 24 in Group B (p less than 0.001) and to 264 +/- 29 in C (p less than 0.001). Overdrive pacing was performed from a maximum of 3 atrial sites up to the shortest paced cycle of 150 ms. Reversion to sinus rhythm (SR) occurred in 20% of patients in Group A, 70% in B and 50% in C. In all these cases SR was obtained with paced cycle length that was 70-90% of the baseline cycle length. Pacing was performed from a mean number of 2.1 sites per patient in Group A, 1.2 in B and 2.0 in C. Atrial fibrillation occurred in 7, 3 and 4 patients, respectively. Acceleration of atrial flutter to a faster form of AF occurred in 3, 3 and 4 patients, respectively. The administration of DISO prior to overdrive atrial pacing improves the rate of conversion to SR and allows an easier stimulation protocol with a lower incidence of pacing-induced atrial fibrillation. The administration of DISO is beneficial when overdrive atrial pacing is performed for the treatment of long standing AF in patients with organic heart disease.
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Della Bella P, Tondo C, Marenzi G, Cipolla CM, Doni F, Grazi S, Rimondini A, Salvioni A, Guazzi MD. Facilitating influence of disopyramide on atrial flutter termination by overdrive pacing. Am J Cardiol 1988; 61:1046-9. [PMID: 3284318 DOI: 10.1016/0002-9149(88)90123-3] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Long-lasting (mean 30 days) type I atrial flutter was treated with overdrive pacing in 30 patients (mean age 69 years) with organic heart disease. To evaluate the effect of pretreatment with disopyramide, the study population was divided in 3 groups of 10 patients each: group A, no disopyramide therapy; group B, intravenous disopyramide (maximum dose 250 mg in 1 hour); and group C, oral disopyramide (400 mg daily for 4 days). There were no differences in baseline cycle length of atrial flutter among the 3 groups before drugs were given. The stimulation protocol included overdrive atrial pacing up to the shortest paced cycle of 150 ms performed at a maximum of 3 atrial sites. Reversion to sinus rhythm occurred in 2 patients in group A, 7 in group B (p less than 0.01) and 5 in group C. Pacing was performed from a mean number of 2.1 sites/patient in group A, 1.2 in group B and 2.0 in group C. Atrial fibrillation occurred in 7, 3 and 4 patients, respectively. Acceleration to a faster form of atrial flutter occurred in 3, 3 and 4 patients, respectively, and reversion to sinus rhythm occurred in all patients who had intravenous disopyramide and in 1 who took the drug orally. The administration of disopyramide before overdrive pacing improved the rate of conversion to sinus rhythm and allowed an easier stimulation protocol with a lower incidence of pacing-induced atrial fibrillation. Disopyramide is beneficial when overdrive atrial pacing is performed for the treatment of long-standing atrial flutter in patients with organic heart disease.
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