1
|
Karunarathna SC, Patabendige NM, Lu W, Asad S, Hapuarachchi KK. An In-Depth Study of Phytopathogenic Ganoderma: Pathogenicity, Advanced Detection Techniques, Control Strategies, and Sustainable Management. J Fungi (Basel) 2024; 10:414. [PMID: 38921400 PMCID: PMC11204718 DOI: 10.3390/jof10060414] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2024] [Revised: 05/06/2024] [Accepted: 05/14/2024] [Indexed: 06/27/2024] Open
Abstract
Phytopathogenic Ganoderma species pose a significant threat to global plant health, resulting in estimated annual economic losses exceeding USD (US Dollars) 68 billion in the agriculture and forestry sectors worldwide. To combat this pervasive menace effectively, a comprehensive understanding of the biology, ecology, and plant infection mechanisms of these pathogens is imperative. This comprehensive review critically examines various aspects of Ganoderma spp., including their intricate life cycle, their disease mechanisms, and the multifaceted environmental factors influencing their spread. Recent studies have quantified the economic impact of Ganoderma infections, revealing staggering yield losses ranging from 20% to 80% across various crops. In particular, oil palm plantations suffer devastating losses, with an estimated annual reduction in yield exceeding 50 million metric tons. Moreover, this review elucidates the dynamic interactions between Ganoderma and host plants, delineating the pathogen's colonization strategies and its elicitation of intricate plant defense responses. This comprehensive analysis underscores the imperative for adopting an integrated approach to Ganoderma disease management. By synergistically harnessing cultural practices, biological control, and chemical treatments and by deploying resistant plant varieties, substantial strides can be made in mitigating Ganoderma infestations. Furthermore, a collaborative effort involving scientists, breeders, and growers is paramount in the development and implementation of sustainable strategies against this pernicious plant pathogen. Through rigorous scientific inquiry and evidence-based practices, we can strive towards safeguarding global plant health and mitigating the dire economic consequences inflicted by Ganoderma infections.
Collapse
Affiliation(s)
- Samantha C. Karunarathna
- Center for Yunnan Plateau Biological Resources Protection and Utilization, College of Biological Resource and Food Engineering, Qujing Normal University, Qujing 655011, China;
- National Institute of Fundamental Studies, Hantane Road, Kandy 20000, Sri Lanka
| | | | - Wenhua Lu
- Center of Excellence in Microbial Diversity and Sustainable Utilization, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand;
| | - Suhail Asad
- School of Biology and Chemistry, Pu’er University, Pu’er 665000, China;
| | - Kalani K. Hapuarachchi
- College of Biodiversity Conservation, Southwest Forestry University, Kunming 650224, China
| |
Collapse
|
2
|
Gómez-Leyva JF, Segura-Castruita MA, Hernández-Cuevas LV, Íñiguez-Rivas M. Arbuscular Mycorrhizal Fungi Associated with Maize ( Zea mays L.) in the Formation and Stability of Aggregates in Two Types of Soil. Microorganisms 2023; 11:2615. [PMID: 38004627 PMCID: PMC10672799 DOI: 10.3390/microorganisms11112615] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2023] [Revised: 10/19/2023] [Accepted: 10/20/2023] [Indexed: 11/26/2023] Open
Abstract
Knowledge of native Arbuscular Mycorrhizal Fungi (AMF) and their relationship with the edaphic characteristics where they live is important to establish the influence of allochthonous AMF, which were inoculated, on the development and stability of soil aggregates. The objectives of this research were to know the composition of native AMF species from two contrasting soils, and to establish the development and stability of aggregates in those soils with corn plants after inoculating them with allochthonous AMF. The experiment had three factors: Soil (two levels [S1 and S2]), HMA (three levels: without application [A0], with the application of Claroideoglomus claroideum [A1] and with the application of a consortium [A2]) and Fertilization (two levels (without fertilization [f0] and with fertilization [f1])). Twelve treatments were generated, with five replicates (60 experimental units [EU]). The EU consisted of a pot with a corn plant and the distribution was completely random. The results demonstrated that the Typic Ustifluvent presented nine species of native AMF, while the Typic Dystrustert had three; the native AMF in each soil influenced the activity of allochthonous AMF, such as their colonization and sporulation. Likewise, differences were found in the stability of macro-sized aggregates (0.5 to 2.0 mm).
Collapse
Affiliation(s)
- Juan Florencio Gómez-Leyva
- División de Estudios de Posgrado e Investigación, Tecnológico Nacional de México/Instituto Tecnológico de Tlajomulco, Maestría en Ciencias en Agrobiotecnología, Tlajomulco de Zúñiga 45640, Mexico; (J.F.G.-L.); (L.V.H.-C.); (M.Í.-R.)
| | - Miguel Angel Segura-Castruita
- División de Estudios de Posgrado e Investigación, Tecnológico Nacional de México/Instituto Tecnológico de Tlajomulco, Maestría en Ciencias en Agrobiotecnología, Tlajomulco de Zúñiga 45640, Mexico; (J.F.G.-L.); (L.V.H.-C.); (M.Í.-R.)
| | - Laura Verónica Hernández-Cuevas
- División de Estudios de Posgrado e Investigación, Tecnológico Nacional de México/Instituto Tecnológico de Tlajomulco, Maestría en Ciencias en Agrobiotecnología, Tlajomulco de Zúñiga 45640, Mexico; (J.F.G.-L.); (L.V.H.-C.); (M.Í.-R.)
| | - Mayra Íñiguez-Rivas
- División de Estudios de Posgrado e Investigación, Tecnológico Nacional de México/Instituto Tecnológico de Tlajomulco, Maestría en Ciencias en Agrobiotecnología, Tlajomulco de Zúñiga 45640, Mexico; (J.F.G.-L.); (L.V.H.-C.); (M.Í.-R.)
- Maestría en Ciencias en Agrobiotecnología, Tlajomulco de Zúñiga 45640, México
| |
Collapse
|
3
|
Khoo YW, Chong KP. Ganoderma boninense: general characteristics of pathogenicity and methods of control. FRONTIERS IN PLANT SCIENCE 2023; 14:1156869. [PMID: 37492765 PMCID: PMC10363743 DOI: 10.3389/fpls.2023.1156869] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/02/2023] [Accepted: 06/23/2023] [Indexed: 07/27/2023]
Abstract
Ganoderma boninense (G. boninense) is a soil-borne fungus threatening oil palm at the present. It causes basal stem rot disease on oil palm. Within six months, this fungus can cause an oil palm plantation to suffer a significant 43% economic loss. The high persistence and nature of spread of G. boninense in soil make control of the disease challenging. Therefore, controlling the pathogen requires a thorough understanding of the mechanisms that underlie pathogenicity as well as its interactions with host plants. In this paper, we present the general characteristics, the pathogenic mechanisms, and the host's defensive system of G. boninense. We also review upcoming and most promising techniques for disease management that will have the least negative effects on the environment and natural resources.
Collapse
Affiliation(s)
- Ying Wei Khoo
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China
- Faculty of Science and Natural Resources, Universiti Malaysia Sabah, Kota Kinabalu, Sabah, Malaysia
| | - Khim Phin Chong
- Faculty of Science and Natural Resources, Universiti Malaysia Sabah, Kota Kinabalu, Sabah, Malaysia
| |
Collapse
|
4
|
Khairi MHF, Nor Muhammad NA, Bunawan H, Abdul Murad AM, Ramzi AB. Unveiling the Core Effector Proteins of Oil Palm Pathogen Ganoderma boninense via Pan-Secretome Analysis. J Fungi (Basel) 2022; 8:jof8080793. [PMID: 36012782 PMCID: PMC9409662 DOI: 10.3390/jof8080793] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2022] [Revised: 07/04/2022] [Accepted: 07/12/2022] [Indexed: 12/10/2022] Open
Abstract
Ganoderma boninense is the major causal agent of basal stem rot (BSR) disease in oil palm, causing the progressive rot of the basal part of the stem. Despite its prominence, the key pathogenicity determinants for the aggressive nature of hemibiotrophic infection remain unknown. In this study, genome sequencing and the annotation of G. boninense T10 were carried out using the Illumina sequencing platform, and comparative genome analysis was performed with previously reported G. boninense strains (NJ3 and G3). The pan-secretome of G. boninense was constructed and comprised 937 core orthogroups, 243 accessory orthogroups, and 84 strain-specific orthogroups. In total, 320 core orthogroups were enriched with candidate effector proteins (CEPs) that could be classified as carbohydrate-active enzymes, hydrolases, and non-catalytic proteins. Differential expression analysis revealed an upregulation of five CEP genes that was linked to the suppression of PTI signaling cascade, while the downregulation of four CEP genes was linked to the inhibition of PTI by preventing host defense elicitation. Genome architecture analysis revealed the one-speed architecture of the G. boninense genome and the lack of preferential association of CEP genes to transposable elements. The findings obtained from this study aid in the characterization of pathogenicity determinants and molecular biomarkers of BSR disease.
Collapse
Affiliation(s)
- Mohamad Hazwan Fikri Khairi
- Institute of Systems Biology, Universiti Kebangsaan Malaysia, Bangi 43600, Selangor, Malaysia; (M.H.F.K.); (N.A.N.M.); (H.B.)
| | - Nor Azlan Nor Muhammad
- Institute of Systems Biology, Universiti Kebangsaan Malaysia, Bangi 43600, Selangor, Malaysia; (M.H.F.K.); (N.A.N.M.); (H.B.)
| | - Hamidun Bunawan
- Institute of Systems Biology, Universiti Kebangsaan Malaysia, Bangi 43600, Selangor, Malaysia; (M.H.F.K.); (N.A.N.M.); (H.B.)
| | - Abdul Munir Abdul Murad
- Department of Biological Sciences and Biotechnology, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, Bangi 43600, Selangor, Malaysia;
| | - Ahmad Bazli Ramzi
- Institute of Systems Biology, Universiti Kebangsaan Malaysia, Bangi 43600, Selangor, Malaysia; (M.H.F.K.); (N.A.N.M.); (H.B.)
- Correspondence: ; Tel.: +603-8921-4546; Fax: +603-8921-3398
| |
Collapse
|
5
|
Sangwan S, Prasanna R. Mycorrhizae Helper Bacteria: Unlocking Their Potential as Bioenhancers of Plant-Arbuscular Mycorrhizal Fungal Associations. MICROBIAL ECOLOGY 2022; 84:1-10. [PMID: 34417849 DOI: 10.1007/s00248-021-01831-7] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/04/2021] [Accepted: 07/27/2021] [Indexed: 06/13/2023]
Abstract
The dynamic interactions of plants and arbuscular mycorrhizal fungi (AMF) that facilitate the efficient uptake of minerals from soil and provide protection from various environmental stresses (biotic and abiotic) are now also attributed to a third component of the symbiosis. These are the less investigated mycorrhizae helper bacteria (MHB), which constitute a dense, active bacterial community, tightly associated with AMF, and involved in the development and functioning of AMF. Although AMF spores are known to host several bacteria in their spore walls and cytoplasm, their role in promoting the ecological fitness and establishment of AMF symbiosis by influencing spore germination, mycelial growth, root colonization, metabolic diversity, and biocontrol of soil borne diseases is now being deciphered. MHB also promote the functioning of arbuscular mycorrhizal symbiosis by triggering various plant growth factors, leading to better availability of nutrients in the soil and uptake by plants. In order to develop strategies to promote mycorrhization by AMF, and particularly to stimulate the ability to utilize phosphorus from the soil, there is a need to decipher crucial metabolic signalling pathways of MHB and elucidate their functional significance as mycorrhiza helper bacteria. MHB, also referred to as AMF bioenhancers, also improve agronomic efficiency and formulations using AMF along with enriched population of MHB are a promising option. This review covers the aspects related to the specificity and mechanisms of action of MHB, which positively impact the formation and functioning of AMF in mycorrhizal symbiosis, and the need to advocate MHB as AMF bioenhancers towards their inclusion in integrated nutrient management practices in sustainable agriculture.
Collapse
Affiliation(s)
- Seema Sangwan
- Division of Microbiology, ICAR Indian Agricultural Research Institute, New Delhi, 110012, India.
| | - Radha Prasanna
- Division of Microbiology, ICAR Indian Agricultural Research Institute, New Delhi, 110012, India
| |
Collapse
|
6
|
Shah C, Mali H, Mesara S, Dhameliya H, Subramanian RB. Combined inoculation of phosphate solubilizing bacteria with mycorrhizae to alleviate the phosphate deficiency in Banana. Biologia (Bratisl) 2022. [DOI: 10.1007/s11756-022-01105-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
|
7
|
Sundram S, Othman R, Idris AS, Angel LPL, Meon S. Improved Growth Performance of Elaeis guineensis Jacq. Through the Applications of Arbuscular Mycorrhizal (AM) Fungi and Endophytic Bacteria. Curr Microbiol 2022; 79:155. [PMID: 35397044 DOI: 10.1007/s00284-022-02842-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2021] [Accepted: 03/14/2022] [Indexed: 11/29/2022]
Abstract
Agrochemical application in the oil palm industry has been estimated to be the largest component amounting to almost 30% of the operational costing. Therefore, there is a huge pressure in the oil palm cultivation to exercise sustainable practices, preferably using cheaper alternatives such as biofertilizers and organic substrates. This study investigates the effect of arbuscular mycorrhizal (AM) fungi and endophytic bacteria applied independently and in combination on oil palm growth and nutrient uptake. Greenhouse and field studies were conducted with plant responses assessed through growth parameters. Greenhouse plants were significantly stimulated by AM fungi, Rhizophagus intraradices UT126 (M1), through single microbe application. An increase of 36% in leaf area was noted in M1 plants while the calcium (Ca) uptake in leaves increased by 11%. There was no significant improvement in overall nitrogen, phosphate, and potassium (NPK) uptake but a significant improvement of Ca measurement in greenhouse and field was observed in the leaves. The predicted synergism between mixed inocula of M1 and R. clarus BR152B (M2) on vegetative growth was not observed, suggesting the probability of interspecies incompatibility that requires further investigation. Growth readings in plants treated with the combination of M1-M2 and Pseudomonas aeruginosa UPMP3 in the field were highest without a significant difference as compared to single application of M1. The difference in readings for field and greenhouse may have been influenced by other external factors such as soil type, rhizospheric microbial community, and climate, and therefore requires further elucidation. These findings suggest R. intraradices UT126 as a promising biostimulant candidate in sustainable agronomic practices especially in the nursery practices.
Collapse
Affiliation(s)
- Shamala Sundram
- Malaysian Palm Oil Board, No. 6 Persiaran Institusi, Bandar Baru Bangi, 43000, Kajang, Selangor, Malaysia.
| | - Radziah Othman
- Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia
| | - Abu Seman Idris
- Malaysian Palm Oil Board, No. 6 Persiaran Institusi, Bandar Baru Bangi, 43000, Kajang, Selangor, Malaysia
| | - Lee Pei Lee Angel
- Malaysian Palm Oil Board, No. 6 Persiaran Institusi, Bandar Baru Bangi, 43000, Kajang, Selangor, Malaysia
| | - Sariah Meon
- Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia
| |
Collapse
|
8
|
Prihatna C, Pramudito TE, Arifin AR, Nguyen TKN, Purnamasari MI, Suwanto A. Antifungal Peptides from a Burkholderia Strain Suppress Basal Stem Rot Disease of Oil Palm. PHYTOPATHOLOGY 2022; 112:238-248. [PMID: 34156264 DOI: 10.1094/phyto-11-20-0529-r] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Basal stem rot (BSR) is the most common disease of oil palm (Elaeis guineensis) in Southeast Asia. BSR is caused by a white-rot fungus Ganoderma boninense. The disease is difficult to manage. Therefore, development of novel and environmentally safe approaches to control the disease is important. Species of Burkholderia are known to have diverse lifestyles, some of which can benefit plants by suppressing diseases or increasing plant growth. In the present study, antifungal peptides produced by a bacterial strain isolated from the rhizosphere of an oil palm tree, Burkholderia sp. strain CP01, exhibited strong growth inhibition on G. boninense. A loss-of-function mutant of CP01 was generated, and it has enabled the identification of a 1.2-kDa peptide and its variants as the active antifungal compounds. High-resolution mass spectrometry revealed six analogous compounds with monoisotopic masses similar to the previously reported cyclic lipopeptides occidiofungin and burkholdine. The antifungal compounds of CP01 were secreted into media, and we sought to use CP01 culture extract without living cells to control BSR disease. Glasshouse experiments showed that CP01 culture extract suppressed BSR disease in oil palm seedlings. The ability of CP01 to produce an antifungal substance and suppress plant disease suggests its potential applications as a biofungicide in agriculture.
Collapse
Affiliation(s)
- Cahya Prihatna
- Research and Development for Biotechnology, PT Wilmar Benih Indonesia, Bekasi, Jawa Barat, Indonesia 17530
| | - Theodorus Eko Pramudito
- Research and Development for Biotechnology, PT Wilmar Benih Indonesia, Bekasi, Jawa Barat, Indonesia 17530
- Faculty of Biotechnology, Atma Jaya Catholic University of Indonesia, Tangerang, Indonesia 15345
| | - Arild Ranlym Arifin
- Research and Development for Biotechnology, PT Wilmar Benih Indonesia, Bekasi, Jawa Barat, Indonesia 17530
| | | | - Maria Indah Purnamasari
- Research and Development for Biotechnology, PT Wilmar Benih Indonesia, Bekasi, Jawa Barat, Indonesia 17530
| | - Antonius Suwanto
- Department of Biology, Faculty of Mathematics and Natural Sciences, IPB University. Bogor, Jawa Barat, Indonesia 16680
| |
Collapse
|
9
|
Zuhar LM, Madihah AZ, Ahmad SA, Zainal Z, Idris AS, Shaharuddin NA. Identification of Oil Palm's Consistently Upregulated Genes during Early Infections of Ganoderma boninense via RNA-Seq Technology and Real-Time Quantitative PCR. PLANTS 2021; 10:plants10102026. [PMID: 34685835 PMCID: PMC8537556 DOI: 10.3390/plants10102026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/20/2021] [Revised: 09/15/2021] [Accepted: 09/16/2021] [Indexed: 11/25/2022]
Abstract
Basal stem rot (BSR) disease caused by pathogenic fungus Ganoderma boninense is a significant concern in the oil palm industry. G. boninense infection in oil palm induces defense-related genes. To understand oil palm defense mechanisms in response to fungal invasion, we analyzed differentially expressed genes (DEGs) derived from RNA-sequencing (RNA-seq) transcriptomic libraries of oil palm roots infected with G. boninense. A total of 126 DEGs were detected from the transcriptomic libraries of G. boninense-infected root tissues at different infection stages. Functional annotation via pathway enrichment analyses revealed that the DEGs were involved in the defense response against the pathogen. The expression of the selected DEGs was further confirmed using real-time quantitative PCR (qPCR) on independent oil palm seedlings and mature palm samples. Seven putative defense-related DEGs consistently showed upregulation in seedlings and mature plants during G. boninense infection. These seven genes might potentially be developed as biomarkers for the early detection of BSR in oil palm.
Collapse
Affiliation(s)
- Liyana Mohd Zuhar
- Department of Biochemistry, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia UPM, Serdang 43400, Selangor, Malaysia; (L.M.Z.); (S.A.A.)
| | - Ahmad Zairun Madihah
- Malaysian Palm Oil Board, 6 Persiaran Institusi, Bandar Baru Bangi, Kajang 43000, Selangor, Malaysia; (A.Z.M.); (A.S.I.)
| | - Siti Aqlima Ahmad
- Department of Biochemistry, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia UPM, Serdang 43400, Selangor, Malaysia; (L.M.Z.); (S.A.A.)
| | - Zamri Zainal
- Department of Biological Sciences and Biotechnology, Faculty of Science and Technology, Universiti Kebangsaan Malaysia UKM, Bangi 43600, Selangor, Malaysia;
| | - Abu Seman Idris
- Malaysian Palm Oil Board, 6 Persiaran Institusi, Bandar Baru Bangi, Kajang 43000, Selangor, Malaysia; (A.Z.M.); (A.S.I.)
| | - Noor Azmi Shaharuddin
- Department of Biochemistry, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia UPM, Serdang 43400, Selangor, Malaysia; (L.M.Z.); (S.A.A.)
- Institute of Plantation Studies, Universiti Putra Malaysia UPM, Serdang 43400, Selangor, Malaysia
- Correspondence:
| |
Collapse
|
10
|
Idbella M, Bonanomi G, De Filippis F, Amor G, Chouyia FE, Fechtali T, Mazzoleni S. Contrasting effects of Rhizophagus irregularis versus bacterial and fungal seed endophytes on Trifolium repens plant-soil feedback. MYCORRHIZA 2021; 31:103-115. [PMID: 33185700 DOI: 10.1007/s00572-020-01003-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Accepted: 11/08/2020] [Indexed: 06/11/2023]
Abstract
Interactions between plants and soil affect plant-plant interactions and community composition by modifying soils conditions in plant-soil feedback, where associated microbes have the most crucial role. Both arbuscular mycorrhizal fungi (AMF) and microbial seed endophytes have been demonstrated to influence, directly or indirectly, biotic or abiotic soil properties, thus affecting subsequent plant growth, and community structure. However, little is known about how plant endophyte communities, individually or in interaction with AMF, affect plant-soil feedback processes. Here, we investigated, through a manipulative experiment, the behavior of endophyte-free and endophyte-associated Trifolium repens plants grown in soils previously conditioned by conspecific endophyte-free and endophyte-associated plants, inoculated or not by Rhizophagus intraradices. Furthermore, we identified microbial endophytes directly from the inner tissues of seeds by high-throughput sequencing, to compare seed fungal and bacterial endophyte composition. Results demonstrated that the outcome of simultaneous occurrence of seed endophytes and AMF on plant behavior depended on matching the endophytic status, i.e., either the presence or absence of seed microbial endophytes, of the conditioning and response phase. Seed fungal endophytes generated strong conspecific negative feedback, while seed bacterial endophytes proved to shift the feedback from negative to positive. Moreover, the simultaneous occurrence of both seed endophytes with AMF could either generate or expand negative plant-soil feedback effects. Our results show that seed and root symbionts can play a significant role on setting conspecific plant-soil feedback.
Collapse
Affiliation(s)
- Mohamed Idbella
- Faculty of Sciences and Techniques, Hassan II University, Casablanca, Morocco.
- Department of Agricultural Sciences, University of Naples Federico II, via Università 100, 80055, Portici, NA, Italy.
| | - Giuliano Bonanomi
- Department of Agricultural Sciences, University of Naples Federico II, via Università 100, 80055, Portici, NA, Italy
| | - Francesca De Filippis
- Department of Agricultural Sciences, University of Naples Federico II, via Università 100, 80055, Portici, NA, Italy
| | - Ghita Amor
- Faculty of Sciences and Techniques, Hassan II University, Casablanca, Morocco
- Department of Agricultural Sciences, University of Naples Federico II, via Università 100, 80055, Portici, NA, Italy
| | - Fatima Ezzahra Chouyia
- Faculty of Sciences and Techniques, Hassan II University, Casablanca, Morocco
- Department of Agricultural Sciences, University of Naples Federico II, via Università 100, 80055, Portici, NA, Italy
| | - Taoufiq Fechtali
- Faculty of Sciences and Techniques, Hassan II University, Casablanca, Morocco
| | - Stefano Mazzoleni
- Department of Agricultural Sciences, University of Naples Federico II, via Università 100, 80055, Portici, NA, Italy
| |
Collapse
|
11
|
Biocontrol and Plant-Growth-Promoting Traits of Talaromyces apiculatus and Clonostachys rosea Consortium against Ganoderma Basal Stem Rot Disease of Oil Palm. Microorganisms 2020; 8:microorganisms8081138. [PMID: 32731441 PMCID: PMC7463586 DOI: 10.3390/microorganisms8081138] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Revised: 07/20/2020] [Accepted: 07/24/2020] [Indexed: 12/04/2022] Open
Abstract
Basal stem rot (BSR) disease caused by Ganoderma boninense basidiomycetous fungus is the most economically important disease in oil palms in South East Asia. Unfortunately, there is no single most effective control measure available. Tremendous efforts have been directed in incorporation of environmentally friendly biocontrol approaches in minimizing BSR disease. This study investigated the performance of two potential biocontrol agents (BCAs), AAT0115 and AAB0114 strains recovered from oil palm on suppression of BSR in planta, and also assessed their plant-growth-promoting (PGP) performance. ITS rRNA-sequence phylogeny discriminated the two ascomycetous Talaromyces apiculatus (Ta) AT0115 and Clonostachys rosea (Cr) AAB0114 biocontrol species with PGP characteristics. In vitro studies have demonstrated both Ta and Cr are capable of reducing linear mycelial growth of G. boninense. Inoculation of individual Cr and Ta—as well as Cr+Ta consortium—induced a significant increment in leaf area and bole girth of oil-palm seedlings five months post-inoculation (MPI) under nursery conditions. At five months post-inoculation, shoot and root biomass, and nutrient contents (nitrogen, phosphorus, potassium, calcium, magnesium and boron) were significantly higher in Ta-inoculated seedlings compared to control treated with non-Ta-inoculated maize. Chlorophyll and carotenoids contents in rapidly growing oil-palm seedlings challenged with Cr, Ta or a combination of both were not negatively affected. Cr, Ta and Cr+Ta consortium treated seedlings had 4.9–60% BSR disease reduction compared to the untreated control. Co-inoculation of Cr and Ta resulted in increased BSR control efficiencies by 18–26% (compared with Cr only) and 48–55% (compared with Ta only). Collectively, Cr and Ta, either individually or in consortium showed potential as BSR biocontrol agents while also possess PGP traits in oil palm.
Collapse
|
12
|
Sujarit K, Mori M, Dobashi K, Shiomi K, Pathom-aree W, Lumyong S. New Antimicrobial Phenyl Alkenoic Acids Isolated from an Oil Palm Rhizosphere-Associated Actinomycete, Streptomyces palmae CMU-AB204 T. Microorganisms 2020; 8:microorganisms8030350. [PMID: 32121612 PMCID: PMC7142508 DOI: 10.3390/microorganisms8030350] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2020] [Revised: 02/24/2020] [Accepted: 02/28/2020] [Indexed: 11/16/2022] Open
Abstract
Basal stem rot (BSR), or Ganoderma rot disease, is the most serious disease associated with the oil palm plant of Southeast Asian countries. A basidiomycetous fungus, Ganoderma boninense, is the causative microbe of this disease. To control BSR in oil palm plantations, biological control agents are gaining attention as a major alternative to chemical fungicides. In the course of searching for effective actinomycetes as potential biological control agents for BSR, Streptomyces palmae CMU-AB204T was isolated from oil palm rhizosphere soil collected on the campus of Chiang Mai University. The culture broth of this strain showed significant antimicrobial activities against several bacteria and phytopathogenic fungi including G. boninense. Antifungal and antibacterial compounds were isolated by antimicrobial activity-guided purification using chromatographic methods. Their structures were elucidated by spectroscopic techniques, including Nuclear Magnetic Resonance (NMR), Mass Spectrometry (MS), Ultraviolet (UV), and Infrared (IR) analyses. The current study isolated new phenyl alkenoic acids 1-6 and three known compounds, anguinomycin A (7), leptomycin A (8), and actinopyrone A (9) as antimicrobial agents. Compounds 1 and 2 displayed broad antifungal activity, though they did not show antibacterial activity. Compounds 3 and 4 revealed a strong antibacterial activity against both Gram-positive and Gram-negative bacteria including the phytopathogenic strain Xanthomonas campestris pv. oryzae. Compounds 7-9 displayed antifungal activity against Ganoderma. Thus, the antifungal compounds obtained in this study may play a role in protecting oil palm plants from Ganoderma infection with the strain S. palmae CMU-AB204T.
Collapse
Affiliation(s)
- Kanaporn Sujarit
- Research Center of Microbial Diversity and Sustainable Utilization, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand; (K.S.); (W.P.-a.)
- Kitasato Institute for Life Sciences, Kitasato University, 5-9-1 Shirokane, Minato-ku, Tokyo 108-8641, Japan; (K.D.); (K.S.)
| | - Mihoko Mori
- Kitasato Institute for Life Sciences, Kitasato University, 5-9-1 Shirokane, Minato-ku, Tokyo 108-8641, Japan; (K.D.); (K.S.)
- Graduate School of Infection Control Sciences, Kitasato University, 5-9-1 Shirokane, Minato-ku, Tokyo 108-8641, Japan
- Correspondence: (M.M.); (S.L.); Tel.: +81-35-791-6131 (M.M.); +66-53-941-947 (ext. 144) (S.L.)
| | - Kazuyuki Dobashi
- Kitasato Institute for Life Sciences, Kitasato University, 5-9-1 Shirokane, Minato-ku, Tokyo 108-8641, Japan; (K.D.); (K.S.)
| | - Kazuro Shiomi
- Kitasato Institute for Life Sciences, Kitasato University, 5-9-1 Shirokane, Minato-ku, Tokyo 108-8641, Japan; (K.D.); (K.S.)
- Graduate School of Infection Control Sciences, Kitasato University, 5-9-1 Shirokane, Minato-ku, Tokyo 108-8641, Japan
| | - Wasu Pathom-aree
- Research Center of Microbial Diversity and Sustainable Utilization, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand; (K.S.); (W.P.-a.)
- Department of Biology, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Saisamorn Lumyong
- Research Center of Microbial Diversity and Sustainable Utilization, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand; (K.S.); (W.P.-a.)
- Department of Biology, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand
- Academy of Science, The Royal Society of Thailand, Bangkok 10300, Thailand
- Correspondence: (M.M.); (S.L.); Tel.: +81-35-791-6131 (M.M.); +66-53-941-947 (ext. 144) (S.L.)
| |
Collapse
|
13
|
Bahari MNA, Sakeh NM, Abdullah SNA, Ramli RR, Kadkhodaei S. Transciptome profiling at early infection of Elaeis guineensis by Ganoderma boninense provides novel insights on fungal transition from biotrophic to necrotrophic phase. BMC PLANT BIOLOGY 2018; 18:377. [PMID: 30594134 PMCID: PMC6310985 DOI: 10.1186/s12870-018-1594-9] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2018] [Accepted: 12/06/2018] [Indexed: 05/27/2023]
Abstract
BACKGROUND Basal stem rot (BSR) caused by hemibiotroph Ganoderma boninense is a devastating disease resulting in a major loss to the oil palm industry. Since there is no physical symptom in oil palm at the early stage of G. boninense infection, characterisation of molecular defense responses in oil palm during early interaction with the fungus is of the utmost importance. Oil palm (Elaeis guineensis) seedlings were artificially infected with G. boninense inoculums and root samples were obtained following a time-course of 0, 3, 7, and 11 days-post-inoculation (d.p.i) for RNA sequencing (RNA-seq) and identification of differentially expressed genes (DEGs). RESULTS The host counter-attack was evidenced based on fungal hyphae and Ganoderma DNA observed at 3 d.p.i which became significantly reduced at 7 and 11 d.p.i. DEGs revealed upregulation of multifaceted defense related genes such as PR-protein (EgPR-1), protease inhibitor (EgBGIA), PRR protein (EgLYK3) chitinase (EgCht) and expansin (EgEXPB18) at 3 d.p.i and 7 d.p.i which dropped at 11 d.p.i. Later stage involved highly expressed transcription factors EgERF113 and EgMYC2 as potential regulators of necrotrophic defense at 11 d.p.i. The reactive oxygen species (ROS) elicitor: peroxidase (EgPER) and NADPH oxidase (EgRBOH) were upregulated and maintained throughout the treatment period. Growth and nutrient distribution were probably compromised through suppression of auxin signalling and iron uptake genes. CONCLUSIONS Based on the analysis of oil palm gene expression, it was deduced that the biotrophic phase of Ganoderma had possibly occurred at the early phase (3 until 7 d.p.i) before being challenged by the fungus via switching its lifestyle into the necrotrophic phase at later stage (11 d.p.i) and finally succumbed the host. Together, the findings suggest the dynamic defense process in oil palm and potential candidates that can serve as phase-specific biomarkers at the early stages of oil palm-G. boninense interaction.
Collapse
Affiliation(s)
| | - Nurshafika Mohd Sakeh
- Institute of Plantation Studies, Universiti Putra Malaysia, 43400 UPM, Serdang, Selangor Malaysia
| | - Siti Nor Akmar Abdullah
- Institute of Plantation Studies, Universiti Putra Malaysia, 43400 UPM, Serdang, Selangor Malaysia
- Faculty of Agriculture, Universiti Putra Malaysia, 43400 UPM, Serdang, Selangor Malaysia
| | - Redzyque Ramza Ramli
- Institute of Plantation Studies, Universiti Putra Malaysia, 43400 UPM, Serdang, Selangor Malaysia
| | - Saied Kadkhodaei
- Research Institute for Biotechnology and Bioengineering, Isfahan University of Technology, Isfahan, 84156-83111 Iran
| |
Collapse
|
14
|
Long L, Lin Q, Yao Q, Zhu H. Population and function analysis of cultivable bacteria associated with spores of arbuscular mycorrhizal fungus Gigaspora margarita. 3 Biotech 2017; 7:8. [PMID: 28391471 PMCID: PMC5385182 DOI: 10.1007/s13205-017-0612-1] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2016] [Accepted: 01/08/2017] [Indexed: 11/30/2022] Open
Abstract
This study was aimed to investigate the diversity and function of bacterial population associated with Gigaspora margarita spores. The fungus was propagated in sterilized sand/soil pots using alfalfa (Medicago sativa), grain sorghum (Sorghum bicolor), or maize (Zea mays) as host plants, or in sterilized vermiculite pots using alfalfa as host plants, respectively. Bacteria were isolated from the new-formed spores using diluted plate method, and typical bacterial isolates were identified according to 16S rRNA gene phylogenetic analysis. Total 43 bacterial isolates affiliated to three phyla and 23 genera were obtained. The spore-associated bacterial communities were obviously different among the four source spores, suggesting that plant species or substrates could influence the bacterial population. Bacillus and Streptomyces were most frequently associated with the fungal spores. Function analysis of these bacteria by plate tests, it was found that about 30.2% isolates stimulated the spore germination, five out of seven tested isolates improved the hyphal growth, total 57.5% of the tested isolates solubilized phosphorus at different levels, 15% isolates degraded chitin, and a few isolates suppressed the growth of Escherichia coli or Staphylococcus aureus. In pot experiment, three bacterial isolates (belonging to Curtobacterium, Ensifer, or Bacillus, respectively) displayed improvement effect on alfalfa growth and/or the colonization of roots by G. margarita.
Collapse
Affiliation(s)
- Liangkun Long
- College of Chemical Engineering, Nanjing Forestry University, Nanjing, 210037, China.
| | - Qunying Lin
- Nanjing Institute for the Comprehensive Utilization of Wild Plants, Nanjing, 210042, China
| | - Qing Yao
- College of Horticulture, South China Agricultural University, Guangzhou, 510642, China
| | - Honghui Zhu
- Guangdong Institute of Microbiology, Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, Guangdong Open Laboratory of Applied Microbiology, State Key Laboratory of Applied Microbiology South China, Guangzhou, 510070, China.
| |
Collapse
|
15
|
Govender N, Wong MY. Detection of Oil Palm Root Penetration by Agrobacterium-Mediated Transformed Ganoderma boninense, Expressing Green Fluorescent Protein. PHYTOPATHOLOGY 2017; 107:483-490. [PMID: 27918241 DOI: 10.1094/phyto-02-16-0062-r] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
A highly efficient and reproducible Agrobacterium-mediated transformation protocol for Ganoderma boninense was developed to facilitate observation of the early stage infection of basal stem rot (BSR). The method was proven amenable to different explants (basidiospore, protoplast, and mycelium) of G. boninense. The transformation efficiency was highest (62%) under a treatment combination of protoplast explant and Agrobacterium strain LBA4404, with successful expression of an hyg marker gene and gus-gfp fusion gene under the control of heterologous p416 glyceraldehyde 3-phosphate dehydrogenase promoter. Optimal transformation conditions included a 1:100 Agrobacterium/explant ratio, induction of Agrobacterium virulence genes in the presence of 250 μm acetosyringone, co-cultivation at 22°C for 2 days on nitrocellulose membrane overlaid on an induction medium, and regeneration of transformants on potato glucose agar prepared with 0.6 M sucrose and 20 mM phosphate buffer. Evaluated transformants were able to infect root tissues of oil palm plantlets with needle-like microhyphae during the penetration event. The availability of this model pathogen system for BSR may lead to a better understanding of the pathogenicity factors associated with G. boninense penetration into oil palm roots.
Collapse
Affiliation(s)
- Nisha Govender
- First and second authors: Laboratory of Plantation Crops, Institute of Tropical Agriculture, and second author: Department of Plant Protection, Faculty of Agriculture, Universiti Putra Malaysia, 43400 Serdang, Selangor, Malaysia
| | - Mui-Yun Wong
- First and second authors: Laboratory of Plantation Crops, Institute of Tropical Agriculture, and second author: Department of Plant Protection, Faculty of Agriculture, Universiti Putra Malaysia, 43400 Serdang, Selangor, Malaysia
| |
Collapse
|
16
|
Kamarudin AN, Lai KS, Lamasudin DU, Idris AS, Balia Yusof ZN. Enhancement of Thiamine Biosynthesis in Oil Palm Seedlings by Colonization of Endophytic Fungus Hendersonia toruloidea. FRONTIERS IN PLANT SCIENCE 2017; 8:1799. [PMID: 29089959 PMCID: PMC5651052 DOI: 10.3389/fpls.2017.01799] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/04/2017] [Accepted: 10/03/2017] [Indexed: 05/18/2023]
Abstract
Thiamine, or vitamin B1 plays an indispensable role as a cofactor in crucial metabolic reactions including glycolysis, pentose phosphate pathway and the tricarboxylic acid cycle in all living organisms. Thiamine has been shown to play a role in plant adaptation toward biotic and abiotic stresses. The modulation of thiamine biosynthetic genes in oil palm seedlings was evaluated in response to root colonization by endophytic Hendersonia toruloidea. Seven-month-old oil palm seedlings were inoculated with H. toruloidea and microscopic analyses were performed to visualize the localization of endophytic H. toruloidea in oil palm roots. Transmission electron microscopy confirmed that H. toruloidea colonized cortical cells. The expression of thiamine biosynthetic genes and accumulation of total thiamine in oil palm seedlings were also evaluated. Quantitative real-time PCR was performed to measure transcript abundances of four key thiamine biosynthesis genes (THI4, THIC, TH1, and TPK) on days 1, 7, 15, and 30 in response to H. toruloidea colonization. The results showed an increase of up to 12-fold in the expression of all gene transcripts on day 1 post-inoculation. On days 7, 15, and 30 post-inoculation, the relative expression levels of these genes were shown to be downregulated. Thiamine accumulation was observed on day 7 post-colonization and subsequently decreased until day 30. This work provides the first evidence for the enhancement of thiamine biosynthesis by endophytic colonization in oil palm seedlings.
Collapse
Affiliation(s)
- Amirah N. Kamarudin
- Department of Biochemistry, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, Serdang, Malaysia
- Ganoderma and Diseases Research Group, Biology Division, Malaysian Palm Oil Board, Kajang, Malaysia
| | - Kok S. Lai
- Department of Cell and Molecular Biology, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, Serdang, Malaysia
| | - Dhilia U. Lamasudin
- Department of Cell and Molecular Biology, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, Serdang, Malaysia
| | - Abu S. Idris
- Ganoderma and Diseases Research Group, Biology Division, Malaysian Palm Oil Board, Kajang, Malaysia
| | - Zetty N. Balia Yusof
- Department of Biochemistry, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, Serdang, Malaysia
- *Correspondence: Zetty N. Balia Yusof,
| |
Collapse
|
17
|
Angel LPL, Yusof MT, Ismail IS, Ping BTY, Mohamed Azni INA, Kamarudin NH, Sundram S. An in vitro study of the antifungal activity of Trichoderma virens 7b and a profile of its non-polar antifungal components released against Ganoderma boninense. J Microbiol 2016; 54:732-744. [PMID: 27796927 DOI: 10.1007/s12275-016-6304-4] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2016] [Revised: 09/07/2016] [Accepted: 09/07/2016] [Indexed: 11/29/2022]
Abstract
Ganoderma boninense is the causal agent of a devastating disease affecting oil palm in Southeast Asian countries. Basal stem rot (BSR) disease slowly rots the base of palms, which radically reduces productive lifespan of this lucrative crop. Previous reports have indicated the successful use of Trichoderma as biological control agent (BCA) against G. boninense and isolate T. virens 7b was selected based on its initial screening. This study attempts to decipher the mechanisms responsible for the inhibition of G. boninense by identifying and characterizing the chemical compounds as well as the physical mechanisms by T. virens 7b. Hexane extract of the isolate gave 62.60% ± 6.41 inhibition against G. boninense and observation under scanning electron microscope (SEM) detected severe mycelial deformation of the pathogen at the region of inhibition. Similar mycelia deformation of G. boninense was observed with a fungicide treatment, Benlate® indicating comparable fungicidal effect by T. virens 7b. Fraction 4 and 5 of hexane active fractions through preparative thin layer chromatography (P-TLC) was identified giving the best inhibition of the pathogen. These fractions comprised of ketones, alcohols, aldehydes, lactones, sesquiterpenes, monoterpenes, sulphides, and free fatty acids profiled through gas chromatography mass spectrometry detector (GC/MSD). A novel antifungal compound discovery of phenylethyl alcohol (PEA) by T. virens 7b is reported through this study. T. virens 7b also proved to be an active siderophore producer through chrome azurol S (CAS) agar assay. The study demonstrated the possible mechanisms involved and responsible in the successful inhibition of G. boninense.
Collapse
Affiliation(s)
- Lee Pei Lee Angel
- Department of Microbiology, Faculty of Biotechnology and Biomolecular Sciences, University Putra Malaysia, 43400, Serdang, Selangor, Malaysia.,Biology Research Division, Malaysian Palm Oil Board, 43000, Kajang, Selangor, Malaysia
| | - Mohd Termizi Yusof
- Department of Microbiology, Faculty of Biotechnology and Biomolecular Sciences, University Putra Malaysia, 43400, Serdang, Selangor, Malaysia
| | - Intan Safinar Ismail
- Department of Chemistry, Faculty of Science; Laboratory of Natural Products, University Putra Malaysia, 43400, Serdang, Selangor, Malaysia.,Institute of Bioscience, University Putra Malaysia, 43400, Serdang, Selangor, Malaysia
| | - Bonnie Tay Yen Ping
- Advanced Oleochemical Technology Division, Malaysian Palm Oil Board, 43000, Kajang, Selangor, Malaysia
| | | | - Norman Hj Kamarudin
- Biology Research Division, Malaysian Palm Oil Board, 43000, Kajang, Selangor, Malaysia
| | - Shamala Sundram
- Biology Research Division, Malaysian Palm Oil Board, 43000, Kajang, Selangor, Malaysia.
| |
Collapse
|
18
|
Tan B, Daim L, Ithnin N, Ooi T, Md-Noh N, Mohamed M, Mohd-Yusof H, Appleton D, Kulaveerasingam H. Expression of phenylpropanoid and flavonoid pathway genes in oil palm roots during infection by Ganoderma boninense. ACTA ACUST UNITED AC 2016. [DOI: 10.1016/j.plgene.2016.07.003] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
|
19
|
Dislich C, Keyel AC, Salecker J, Kisel Y, Meyer KM, Auliya M, Barnes AD, Corre MD, Darras K, Faust H, Hess B, Klasen S, Knohl A, Kreft H, Meijide A, Nurdiansyah F, Otten F, Pe'er G, Steinebach S, Tarigan S, Tölle MH, Tscharntke T, Wiegand K. A review of the ecosystem functions in oil palm plantations, using forests as a reference system. Biol Rev Camb Philos Soc 2016; 92:1539-1569. [PMID: 27511961 DOI: 10.1111/brv.12295] [Citation(s) in RCA: 78] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2015] [Revised: 07/07/2016] [Accepted: 07/11/2016] [Indexed: 11/28/2022]
Abstract
Oil palm plantations have expanded rapidly in recent decades. This large-scale land-use change has had great ecological, economic, and social impacts on both the areas converted to oil palm and their surroundings. However, research on the impacts of oil palm cultivation is scattered and patchy, and no clear overview exists. We address this gap through a systematic and comprehensive literature review of all ecosystem functions in oil palm plantations, including several (genetic, medicinal and ornamental resources, information functions) not included in previous systematic reviews. We compare ecosystem functions in oil palm plantations to those in forests, as the conversion of forest to oil palm is prevalent in the tropics. We find that oil palm plantations generally have reduced ecosystem functioning compared to forests: 11 out of 14 ecosystem functions show a net decrease in level of function. Some functions show decreases with potentially irreversible global impacts (e.g. reductions in gas and climate regulation, habitat and nursery functions, genetic resources, medicinal resources, and information functions). The most serious impacts occur when forest is cleared to establish new plantations, and immediately afterwards, especially on peat soils. To variable degrees, specific plantation management measures can prevent or reduce losses of some ecosystem functions (e.g. avoid illegal land clearing via fire, avoid draining of peat, use of integrated pest management, use of cover crops, mulch, and compost) and we highlight synergistic mitigation measures that can improve multiple ecosystem functions simultaneously. The only ecosystem function which increases in oil palm plantations is, unsurprisingly, the production of marketable goods. Our review highlights numerous research gaps. In particular, there are significant gaps with respect to socio-cultural information functions. Further, there is a need for more empirical data on the importance of spatial and temporal scales, such as differences among plantations in different environments, of different sizes, and of different ages, as our review has identified examples where ecosystem functions vary spatially and temporally. Finally, more research is needed on developing management practices that can offset the losses of ecosystem functions. Our findings should stimulate research to address the identified gaps, and provide a foundation for more systematic research and discussion on ways to minimize the negative impacts and maximize the positive impacts of oil palm cultivation.
Collapse
Affiliation(s)
- Claudia Dislich
- Department of Ecosystem Modelling, Faculty of Forest Sciences and Forest Ecology, University of Göttingen, 37077, Göttingen, Germany.,Department of Ecological Modelling, Helmholtz Centre for Environmental Research - UFZ, 04318, Leipzig, Germany
| | - Alexander C Keyel
- Department of Ecosystem Modelling, Faculty of Forest Sciences and Forest Ecology, University of Göttingen, 37077, Göttingen, Germany
| | - Jan Salecker
- Department of Ecosystem Modelling, Faculty of Forest Sciences and Forest Ecology, University of Göttingen, 37077, Göttingen, Germany
| | - Yael Kisel
- Department of Ecosystem Modelling, Faculty of Forest Sciences and Forest Ecology, University of Göttingen, 37077, Göttingen, Germany
| | - Katrin M Meyer
- Department of Ecosystem Modelling, Faculty of Forest Sciences and Forest Ecology, University of Göttingen, 37077, Göttingen, Germany
| | - Mark Auliya
- Department of Conservation Biology, Helmholtz Centre for Environmental Research - UFZ, 04318, Leipzig, Germany
| | - Andrew D Barnes
- Department of Systemic Conservation Biology, Faculty of Biology and Psychology, University of Göttingen, 37073, Göttingen, Germany
| | - Marife D Corre
- Department of Soil Science of Tropical and Subtropical Ecosystems, Faculty of Forest Sciences and Forest Ecology, University of Göttingen, 37077, Göttingen, Germany
| | - Kevin Darras
- Department of Crop Sciences, Faculty of Agricultural Sciences, University of Göttingen, 37077, Göttingen, Germany
| | - Heiko Faust
- Department of Human Geography, Faculty of Geoscience and Geography, University of Göttingen, 37077, Göttingen, Germany
| | - Bastian Hess
- Department of Ecosystem Modelling, Faculty of Forest Sciences and Forest Ecology, University of Göttingen, 37077, Göttingen, Germany
| | - Stephan Klasen
- Department of Development Economics, Faculty of Economic Science, University of Göttingen, 37073, Göttingen, Germany
| | - Alexander Knohl
- Department of Bioclimatology, Faculty of Forest Sciences and Forest Ecology, University of Göttingen, 37077, Göttingen, Germany
| | - Holger Kreft
- Department of Biodiversity, Macroecology & Conservation Biogeography, Faculty of Forest Sciences and Forest Ecology, University of Göttingen, 37077, Göttingen, Germany
| | - Ana Meijide
- Department of Bioclimatology, Faculty of Forest Sciences and Forest Ecology, University of Göttingen, 37077, Göttingen, Germany
| | - Fuad Nurdiansyah
- Department of Ecosystem Modelling, Faculty of Forest Sciences and Forest Ecology, University of Göttingen, 37077, Göttingen, Germany.,Department of Crop Sciences, Faculty of Agricultural Sciences, University of Göttingen, 37077, Göttingen, Germany
| | - Fenna Otten
- Department of Human Geography, Faculty of Geoscience and Geography, University of Göttingen, 37077, Göttingen, Germany
| | - Guy Pe'er
- Department of Conservation Biology, Helmholtz Centre for Environmental Research - UFZ, 04318, Leipzig, Germany.,German Centre for Integrative Biodiversity Research (iDiv), 04103, Leipzig, Germany
| | - Stefanie Steinebach
- Institute of Social and Cultural Anthropology, Faculty of Social Sciences, University of Göttingen, 37073, Göttingen, Germany
| | - Suria Tarigan
- Department of Soil Sciences and Land Resources Management, Bogor Agriculture University, Bogor, Indonesia
| | - Merja H Tölle
- Department of Bioclimatology, Faculty of Forest Sciences and Forest Ecology, University of Göttingen, 37077, Göttingen, Germany.,Institute for Geography, University of Giessen, 35390, Giessen, Germany
| | - Teja Tscharntke
- Department of Crop Sciences, Faculty of Agricultural Sciences, University of Göttingen, 37077, Göttingen, Germany
| | - Kerstin Wiegand
- Department of Ecosystem Modelling, Faculty of Forest Sciences and Forest Ecology, University of Göttingen, 37077, Göttingen, Germany
| |
Collapse
|
20
|
Sundram S, Meon S, Seman IA, Othman R. Application of arbuscular mycorrhizal fungi with Pseudomonas aeruginosa UPMP3 reduces the development of Ganoderma basal stem rot disease in oil palm seedlings. MYCORRHIZA 2015; 25:387-97. [PMID: 25492807 DOI: 10.1007/s00572-014-0620-5] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/22/2014] [Accepted: 11/18/2014] [Indexed: 05/16/2023]
Abstract
The effect of arbuscular mycorrhizal fungi (AMF) in combination with endophytic bacteria (EB) in reducing development of basal stem rot (BSR) disease in oil palm (Elaeis guineensis) was investigated. BSR caused by Ganoderma boninense leads to devastating economic loss and the oil palm industry is struggling to control the disease. The application of two AMF with two EB as biocontrol agents was assessed in the nursery and subsequently, repeated in the field using bait seedlings. Seedlings pre-inoculated with a combination of Glomus intraradices UT126, Glomus clarum BR152B and Pseudomonas aeruginosa UPMP3 significantly reduced disease development measured as the area under disease progression curve (AUDPC) and the epidemic rate (R L) of disease in the nursery. A 20-month field trial using similar treatments evaluated disease development in bait seedlings based on the rotting area/advancement assessed in cross-sections of the seedling base. Data show that application of Glomus intraradices UT126 singly reduced disease development of BSR, but that combination of the two AMF with P. aeruginosa UPMP3 significantly improved biocontrol efficacy in both nursery and fields reducing BSR disease to 57 and 80%, respectively. The successful use of bait seedlings in the natural environment to study BSR development represents a promising alternative to nursery trial testing in the field with shorter temporal assessment.
Collapse
Affiliation(s)
- Shamala Sundram
- Ganoderma and Diseases Research of Oil Palm Unit, Malaysian Palm Oil Board, No. 6 Persiaran Institusi, Bandar Baru Bangi, 43000, Kajang, Selangor, Malaysia,
| | | | | | | |
Collapse
|
21
|
Pancher M, Ceol M, Corneo PE, Longa CMO, Yousaf S, Pertot I, Campisano A. Fungal endophytic communities in grapevines (Vitis vinifera L.) respond to crop management. Appl Environ Microbiol 2012; 78:4308-17. [PMID: 22492448 PMCID: PMC3370515 DOI: 10.1128/aem.07655-11] [Citation(s) in RCA: 100] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2011] [Accepted: 03/28/2012] [Indexed: 11/20/2022] Open
Abstract
We studied the distribution of fungal endophytes of grapevine (Vitis vinifera L.) plants in a subalpine area of northern Italy, where viticulture is of high economic relevance. We adopted both cultivation-based and cultivation-independent approaches to address how various anthropic and nonanthropic factors shape microbial communities. Grapevine stems were harvested from several locations considering organic and integrated pest management (IPM) and from the cultivars Merlot and Chardonnay. Cultivable fungi were isolated and identified by internal-transcribed-spacer sequence analysis, using a novel colony-PCR method, to amplify DNA from fungal specimens. The composition of fungal communities was assessed using a cultivation-independent approach, automated ribosomal intergenic spacer analysis (ARISA). Multivariate statistical analysis of both culture-dependent and culture-independent data sets was convergent and indicated that fungal endophytic communities in grapevines from organically managed farms were different from those from farms utilizing IPM. Fungal communities in plants of cv. Merlot and cv. Chardonnay overlapped when analyzed using culture-dependent approaches but could be partially resolved using ARISA fingerprinting.
Collapse
Affiliation(s)
- Michael Pancher
- Sustainable Agro-Ecosystems and Bioresources Department, IASMA Research and Innovation Centre, Fondazione Edmund Mach, San Michele all'Adige, Italy
| | | | | | | | | | | | | |
Collapse
|