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Praneetvatakul S, Schreinemachers P, Vijitsrikamol K, Potchanasin C. Policy options for promoting wider use of biopesticides in Thai agriculture. Heliyon 2024; 10:e24486. [PMID: 38298629 PMCID: PMC10827763 DOI: 10.1016/j.heliyon.2024.e24486] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2023] [Revised: 01/08/2024] [Accepted: 01/09/2024] [Indexed: 02/02/2024] Open
Abstract
Biopesticides are rapidly growing in importance for crop protection globally, but nearly all growth is happening in high income countries. No previous work systematically analyzed how lower-income countries can better benefit from the increased availability of biopesticides, which is important because these countries are particularly affected by the adverse effects of chemical pesticide use. Here we review the legislation of biopesticides in Thailand and combine this with stakeholder interviews and interview data from 300 smallholder farmers producing rice, fruit, vegetables, and flowers. We find that Thailand has adopted a biopesticide registration system that facilitates a fast-track registration, but it is still relatively costly considering the small market size. While 65 % of the sampled farmers used biopesticides, most farmers still heavily relied on conventional pesticides as their main method to control pests. Education, farming experience, positive attitudes of biopesticides, adoption of other integrated pest management methods and contacts with government extension agents were positively associated with biopesticide use. Coordinated action is needed to stimulate the supply of a wider range of biopesticide products while promoting adoption among farmers.
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Affiliation(s)
- Suwanna Praneetvatakul
- Department of Agricultural and Resource Economics, Faculty of Economics, Kasetsart University, 50 Phaholyothin Rd., Bangkok, 10900 Thailand
| | | | - Kampanat Vijitsrikamol
- Department of Agricultural and Resource Economics, Faculty of Economics, Kasetsart University, 50 Phaholyothin Rd., Bangkok, 10900 Thailand
| | - Chakrit Potchanasin
- Department of Agricultural and Resource Economics, Faculty of Economics, Kasetsart University, 50 Phaholyothin Rd., Bangkok, 10900 Thailand
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Reglinski T, Wurms KV, Vanneste JL, Ah Chee A, Schipper M, Cornish D, Yu J, McAlinden J, Hedderley D. Kiwifruit Resistance to Sclerotinia sclerotiorum and Pseudomonas syringae pv. actinidiae and Defence Induction by Acibenzolar-S-methyl and Methyl Jasmonate Are Cultivar Dependent. Int J Mol Sci 2023; 24:15952. [PMID: 37958935 PMCID: PMC10647243 DOI: 10.3390/ijms242115952] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2023] [Revised: 10/25/2023] [Accepted: 11/01/2023] [Indexed: 11/15/2023] Open
Abstract
Pathogen susceptibility and defence gene inducibility were compared between the Actinidia arguta cultivar 'Hortgem Tahi' and the two cultivars of A. chinensis 'Hayward' and 'Zesy002'. Plants were treated with acibenzolar-s-methyl (ASM) or methyl jasmonate (MeJA) one week before inoculation with Pseudomonas syringae pv. actinidiae (Psa biovar3) or Sclerotinia sclerotiorum, or secondary induction with chitosan+glucan (Ch-Glu) as a potential pathogen proxy. Defence expression was evaluated by measuring the expression of 18 putative defence genes. 'Hortgem Tahi' was highly susceptible to sclerotinia and very resistant to Psa, whereas 'Zesy002' was highly resistant to both, and 'Hayward' was moderately susceptible to both. Gene expression in 'Hayward' and 'Zesy002' was alike but differed significantly from 'Hortgem Tahi' which had higher basal levels of PR1-i, PR5-i, JIH1, NPR3 and WRKY70 but lower expression of RD22 and PR2-i. Treatment with ASM caused upregulation of NIMIN2, PR1-i, WRKY70, DMR6 and PR5-i in all cultivars and induced resistance to Psa in 'Zesy002' and 'Hayward' but decreased resistance to sclerotinia in 'Zesy002'. MeJA application caused upregulation of LOX2 and downregulation of NIMIN2, DMR6 and PR2-i but did not affect disease susceptibility. The Ch-Glu inducer induced PR-gene families in each cultivar, highlighting its possible effectiveness as an alternative to actual pathogen inoculation. The significance of variations in fundamental and inducible gene expression among the cultivars is explored.
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Affiliation(s)
- Tony Reglinski
- Ruakura Research Centre, The New Zealand Institute for Plant and Food Research Limited, Hamilton 3214, New Zealand; (K.V.W.); (J.L.V.); (A.A.C.); (M.S.); (D.C.); (J.Y.); (J.M.)
| | - Kirstin V. Wurms
- Ruakura Research Centre, The New Zealand Institute for Plant and Food Research Limited, Hamilton 3214, New Zealand; (K.V.W.); (J.L.V.); (A.A.C.); (M.S.); (D.C.); (J.Y.); (J.M.)
| | - Joel L. Vanneste
- Ruakura Research Centre, The New Zealand Institute for Plant and Food Research Limited, Hamilton 3214, New Zealand; (K.V.W.); (J.L.V.); (A.A.C.); (M.S.); (D.C.); (J.Y.); (J.M.)
| | - Annette Ah Chee
- Ruakura Research Centre, The New Zealand Institute for Plant and Food Research Limited, Hamilton 3214, New Zealand; (K.V.W.); (J.L.V.); (A.A.C.); (M.S.); (D.C.); (J.Y.); (J.M.)
| | - Magan Schipper
- Ruakura Research Centre, The New Zealand Institute for Plant and Food Research Limited, Hamilton 3214, New Zealand; (K.V.W.); (J.L.V.); (A.A.C.); (M.S.); (D.C.); (J.Y.); (J.M.)
| | - Deirdre Cornish
- Ruakura Research Centre, The New Zealand Institute for Plant and Food Research Limited, Hamilton 3214, New Zealand; (K.V.W.); (J.L.V.); (A.A.C.); (M.S.); (D.C.); (J.Y.); (J.M.)
| | - Janet Yu
- Ruakura Research Centre, The New Zealand Institute for Plant and Food Research Limited, Hamilton 3214, New Zealand; (K.V.W.); (J.L.V.); (A.A.C.); (M.S.); (D.C.); (J.Y.); (J.M.)
| | - Jordan McAlinden
- Ruakura Research Centre, The New Zealand Institute for Plant and Food Research Limited, Hamilton 3214, New Zealand; (K.V.W.); (J.L.V.); (A.A.C.); (M.S.); (D.C.); (J.Y.); (J.M.)
| | - Duncan Hedderley
- Palmerston North Research Centre, The New Zealand Institute for Plant and Food Research Limited, Palmerston North 4410, New Zealand;
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Tu CW, Huang YW, Lee CW, Kuo SY, Lin NS, Hsu YH, Hu CC. Argonaute 5-mediated antiviral defense and viral counter-defense in Nicotiana benthamiana. Virus Res 2023; 334:199179. [PMID: 37481165 PMCID: PMC10405324 DOI: 10.1016/j.virusres.2023.199179] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2023] [Revised: 07/18/2023] [Accepted: 07/19/2023] [Indexed: 07/24/2023]
Abstract
The argonaute (AGO) family proteins play a crucial role in preventing viral invasions through the plant antiviral RNA silencing pathway, with distinct AGO proteins recruited for specific antiviral mechanisms. Our previous study revealed that Nicotiana benthamiana AGO5 (NbAGO5) expression was significantly upregulated in response to bamboo mosaic virus (BaMV) infection. However, the roles of NbAGO5 in antiviral mechanisms remained to be explored. In this research, we examined the antiviral functions of NbAGO5 in the infections of different viruses. It was found that the accumulation of NbAGO5 was induced not only at the RNA but also at the protein level following the infections of BaMV, potato virus X (PVX), tobacco mosaic virus (TMV), and cucumber mosaic virus (CMV) in N. benthamiana. To explore the antiviral mechanism and regulatory function of NbAGO5, we generated NbAGO5 overexpression (OE-NbAGO5) and knockout (nbago5) transgenic N. benthamiana lines. Our findings reveal that NbAGO5 provides defense against BaMV, PVX, TMV, and a mutant CMV deficient in 2b gene, but not against the wild-type CMV and turnip mosaic virus (TuMV). Through affinity purification and small RNA northern blotting, we demonstrated that NbAGO5 exerts its antiviral function by binding to viral small interfering RNAs (vsiRNAs). Moreover, we observed that CMV 2b and TuMV HC-Pro interact with NbAGO5, triggering its degradation via the 26S proteasome and autophagy pathways, thereby allowing these viruses to overcome NbAGO5-mediated defense. In addition, TuMV HC-Pro provides another line of counter-defense by interfering with vsiRNA binding by NbAGO5. Our study provides further insights into the antiviral RNA interference mechanism and the complex interplay between NbAGO5 and plant viruses.
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Affiliation(s)
- Chin-Wei Tu
- PhD Program in Microbial Genomics, National Chung Hsing University and Academia Sinica, Taichung 40227, Taiwan
| | - Ying-Wen Huang
- Graduate Institute of Biotechnology, National Chung Hsing University, Taichung 40227, Taiwan; Advanced Plant Biotechnology Center, National Chung Hsing University, Taichung 40227, Taiwan
| | - Chin-Wei Lee
- Graduate Institute of Biotechnology, National Chung Hsing University, Taichung 40227, Taiwan
| | - Song-Yi Kuo
- Temasek Life Sciences Laboratory, National University of Singapore, Singapore 117604, Singapore
| | - Na-Sheng Lin
- Institute of Plant and Microbial Biology, Academia Sinica, Taipei 11529, Taiwan
| | - Yau-Heiu Hsu
- Graduate Institute of Biotechnology, National Chung Hsing University, Taichung 40227, Taiwan; Advanced Plant Biotechnology Center, National Chung Hsing University, Taichung 40227, Taiwan
| | - Chung-Chi Hu
- Graduate Institute of Biotechnology, National Chung Hsing University, Taichung 40227, Taiwan; Advanced Plant Biotechnology Center, National Chung Hsing University, Taichung 40227, Taiwan.
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Wang SY, Pang YB, Tao Y, Shi XC, Zhang YJ, Wang YX, Jiang YH, Ji XY, Wang BL, Herrera-Balandrano DD, Laborda P. Dipicolinic acid enhances kiwifruit resistance to Botrytis cinerea by promoting phenolics accumulation. PEST MANAGEMENT SCIENCE 2023; 79:3177-3189. [PMID: 37024430 DOI: 10.1002/ps.7496] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/04/2022] [Revised: 01/25/2023] [Accepted: 04/07/2023] [Indexed: 06/19/2023]
Abstract
BACKGROUND Kiwifruit is highly susceptible to fungal pathogens, such as Botrytis cinerea, which reduce crop production and quality. In this study, dipicolinic acid (DPA), which is one of the main components of Bacillus spores, was evaluated as a new elicitor to enhance kiwifruit resistance to B. cinerea. RESULTS DPA enhances antioxidant capacity and induces the accumulation of phenolics in B. cinerea-infected 'Xuxiang' kiwifruit. The contents of the main antifungal phenolics in kiwifruit, including caffeic acid, chlorogenic acid and isoferulic acid, increased after DPA treatment. DPA enhanced H2 O2 levels after 0 and 1 days, which promoted catalase (CAT) and superoxide dismutase (SOD) activities, reducing long-term H2 O2 levels. DPA promoted the up-regulation of several kiwifruit defense genes, including CERK1, MPK3, PR1-1, PR1-2, PR5-1 and PR5-2. Furthermore, DPA at 5 mM inhibited B. cinerea symptoms in kiwifruit (95.1% lesion length inhibition) more effectively than the commercial fungicides carbendazim, difenoconazole, prochloraz and thiram. CONCLUSIONS The antioxidant properties of DPA and the main antifungal phenolics of kiwifruit were examined for the first time. This study uncovers new insights regarding the potential mechanisms used by Bacillus species to induce disease resistance. © 2023 Society of Chemical Industry.
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Affiliation(s)
- Su-Yan Wang
- School of Life Sciences, Nantong University, Nantong, China
| | - Yi-Bo Pang
- School of Life Sciences, Nantong University, Nantong, China
| | - Yuan Tao
- School of Life Sciences, Nantong University, Nantong, China
| | - Xin-Chi Shi
- School of Life Sciences, Nantong University, Nantong, China
| | - Yun-Jiao Zhang
- School of Life Sciences, Nantong University, Nantong, China
| | - Yan-Xia Wang
- School of Life Sciences, Nantong University, Nantong, China
| | - Yong-Hui Jiang
- School of Life Sciences, Nantong University, Nantong, China
| | - Xin-Yu Ji
- School of Life Sciences, Nantong University, Nantong, China
| | - Bing-Lin Wang
- School of Life Sciences, Nantong University, Nantong, China
| | | | - Pedro Laborda
- School of Life Sciences, Nantong University, Nantong, China
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Wurms KV, Reglinski T, Buissink P, Ah Chee A, Fehlmann C, McDonald S, Cooney J, Jensen D, Hedderley D, McKenzie C, Rikkerink EHA. Effects of Drought and Flooding on Phytohormones and Abscisic Acid Gene Expression in Kiwifruit. Int J Mol Sci 2023; 24:ijms24087580. [PMID: 37108744 PMCID: PMC10143653 DOI: 10.3390/ijms24087580] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Revised: 04/14/2023] [Accepted: 04/17/2023] [Indexed: 04/29/2023] Open
Abstract
Environmental extremes, such as drought and flooding, are becoming more common with global warming, resulting in significant crop losses. Understanding the mechanisms underlying the plant water stress response, regulated by the abscisic acid (ABA) pathway, is crucial to building resilience to climate change. Potted kiwifruit plants (two cultivars) were exposed to contrasting watering regimes (water logging and no water). Root and leaf tissues were sampled during the experiments to measure phytohormone levels and expression of ABA pathway genes. ABA increased significantly under drought conditions compared with the control and waterlogged plants. ABA-related gene responses were significantly greater in roots than leaves. ABA responsive genes, DREB2 and WRKY40, showed the greatest upregulation in roots with flooding, and the ABA biosynthesis gene, NCED3, with drought. Two ABA-catabolic genes, CYP707A i and ii were able to differentiate the water stress responses, with upregulation in flooding and downregulation in drought. This study has identified molecular markers and shown that water stress extremes induced strong phytohormone/ABA gene responses in the roots, which are the key site of water stress perception, supporting the theory kiwifruit plants regulate ABA to combat water stress.
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Affiliation(s)
- Kirstin V Wurms
- Ruakura Research Centre, The New Zealand Institute for Plant and Food Research Limited, Hamilton 3214, New Zealand
| | - Tony Reglinski
- Ruakura Research Centre, The New Zealand Institute for Plant and Food Research Limited, Hamilton 3214, New Zealand
| | - Poppy Buissink
- Ruakura Research Centre, The New Zealand Institute for Plant and Food Research Limited, Hamilton 3214, New Zealand
| | - Annette Ah Chee
- Ruakura Research Centre, The New Zealand Institute for Plant and Food Research Limited, Hamilton 3214, New Zealand
| | - Christina Fehlmann
- Ruakura Research Centre, The New Zealand Institute for Plant and Food Research Limited, Hamilton 3214, New Zealand
| | - Stella McDonald
- Mount Albert Research Centre, The New Zealand Institute for Plant and Food Research Limited, Auckland 1025, New Zealand
| | - Janine Cooney
- Ruakura Research Centre, The New Zealand Institute for Plant and Food Research Limited, Hamilton 3214, New Zealand
| | - Dwayne Jensen
- Ruakura Research Centre, The New Zealand Institute for Plant and Food Research Limited, Hamilton 3214, New Zealand
| | - Duncan Hedderley
- Palmerston North Research Centre, The New Zealand Institute for Plant and Food Research Limited, Palmerston North 4410, New Zealand
| | - Catherine McKenzie
- Te Puke Research Centre, The New Zealand Institute for Plant and Food Research Limited, Te Puke 3182, New Zealand
| | - Erik H A Rikkerink
- Mount Albert Research Centre, The New Zealand Institute for Plant and Food Research Limited, Auckland 1025, New Zealand
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