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Desika J, Yogendra K, Hepziba SJ, Patne N, Vivek BS, Ravikesavan R, Nair SK, Jaba J, Razak TA, Srinivasan S, Shettigar N. Exploring Metabolomics to Innovate Management Approaches for Fall Armyworm ( Spodoptera frugiperda [J.E. Smith]) Infestation in Maize ( Zea mays L.). PLANTS (BASEL, SWITZERLAND) 2024; 13:2451. [PMID: 39273935 PMCID: PMC11397220 DOI: 10.3390/plants13172451] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/22/2024] [Revised: 08/07/2024] [Accepted: 08/14/2024] [Indexed: 09/15/2024]
Abstract
The Fall armyworm (FAW), Spodoptera frugiperda (J. E. Smith), is a highly destructive lepidopteran pest known for its extensive feeding on maize (Zea mays L.) and other crops, resulting in a substantial reduction in crop yields. Understanding the metabolic response of maize to FAW infestation is essential for effective pest management and crop protection. Metabolomics, a powerful analytical tool, provides insights into the dynamic changes in maize's metabolic profile in response to FAW infestation. This review synthesizes recent advancements in metabolomics research focused on elucidating maize's metabolic responses to FAW and other lepidopteran pests. It discusses the methodologies used in metabolomics studies and highlights significant findings related to the identification of specific metabolites involved in FAW defense mechanisms. Additionally, it explores the roles of various metabolites, including phytohormones, secondary metabolites, and signaling molecules, in mediating plant-FAW interactions. The review also examines potential applications of metabolomics data in developing innovative strategies for integrated pest management and breeding maize cultivars resistant to FAW by identifying key metabolites and associated metabolic pathways involved in plant-FAW interactions. To ensure global food security and maximize the potential of using metabolomics in enhancing maize resistance to FAW infestation, further research integrating metabolomics with other omics techniques and field studies is necessary.
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Affiliation(s)
- Jayasaravanan Desika
- V.O.C. Agricultural College and Research Institute, Tamil Nadu Agricultural University (TNAU), Killikulam 628252, India
- International Maize and Wheat Improvement Center (CIMMYT), Hyderabad 502324, India
| | - Kalenahalli Yogendra
- International Crops Research Institute for the Semi-Arid Tropics (ICRISAT), Hyderabad 502324, India
| | - Sundararajan Juliet Hepziba
- V.O.C. Agricultural College and Research Institute, Tamil Nadu Agricultural University (TNAU), Killikulam 628252, India
| | - Nagesh Patne
- International Maize and Wheat Improvement Center (CIMMYT), Hyderabad 502324, India
| | | | - Rajasekaran Ravikesavan
- Centre for Plant Breeding & Genetics, Tamil Nadu Agricultural University (TNAU), Coimbatore 641003, India
| | - Sudha Krishnan Nair
- International Maize and Wheat Improvement Center (CIMMYT), Hyderabad 502324, India
| | - Jagdish Jaba
- International Crops Research Institute for the Semi-Arid Tropics (ICRISAT), Hyderabad 502324, India
| | - Thurapmohideen Abdul Razak
- V.O.C. Agricultural College and Research Institute, Tamil Nadu Agricultural University (TNAU), Killikulam 628252, India
| | - Subbiah Srinivasan
- V.O.C. Agricultural College and Research Institute, Tamil Nadu Agricultural University (TNAU), Killikulam 628252, India
| | - Nivedita Shettigar
- International Maize and Wheat Improvement Center (CIMMYT), Hyderabad 502324, India
- Department of Genetics and Plant Breeding, Professor Jayashankar Telangana State Agricultural University (PJTSAU), Hyderabad 500030, India
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Salum YM, Yin A, Zaheer U, Liu Y, Guo Y, He W. CRISPR/Cas9-Based Genome Editing of Fall Armyworm ( Spodoptera frugiperda): Progress and Prospects. Biomolecules 2024; 14:1074. [PMID: 39334840 PMCID: PMC11430287 DOI: 10.3390/biom14091074] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2024] [Revised: 08/23/2024] [Accepted: 08/26/2024] [Indexed: 09/30/2024] Open
Abstract
The fall armyworm (Spodoptera frugiperda) poses a substantial threat to many important crops worldwide, emphasizing the need to develop and implement advanced technologies for effective pest control. CRISPR/Cas9, derived from the bacterial adaptive immune system, is a prominent tool used for genome editing in living organisms. Due to its high specificity and adaptability, the CRISPR/Cas9 system has been used in various functional gene studies through gene knockout and applied in research to engineer phenotypes that may cause economical losses. The practical application of CRISPR/Cas9 in diverse insect orders has also provided opportunities for developing strategies for genetic pest control, such as gene drive and the precision-guided sterile insect technique (pgSIT). In this review, a comprehensive overview of the recent progress in the application of the CRISPR/Cas9 system for functional gene studies in S. frugiperda is presented. We outline the fundamental principles of applying CRISPR/Cas9 in S. frugiperda through embryonic microinjection and highlight the application of CRISPR/Cas9 in the study of genes associated with diverse biological aspects, including body color, insecticide resistance, olfactory behavior, sex determination, development, and RNAi. The ability of CRISPR/Cas9 technology to induce sterility, disrupt developmental stages, and influence mating behaviors illustrates its comprehensive roles in pest management strategies. Furthermore, this review addresses the limitations of the CRISPR/Cas9 system in studying gene function in S. frugiperda and explores its future potential as a promising tool for controlling this insect pest.
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Affiliation(s)
- Yussuf Mohamed Salum
- State Key Laboratory for Ecological Pest Control of Fujian and Taiwan Crops, Institute of Applied Ecology, International Joint Research Laboratory of Ecological Pest Control, Ministry of Education, Ministerial and Provincial Joint Innovation Centre for Safety Production of Cross-Strait Crops, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Anyuan Yin
- State Key Laboratory for Ecological Pest Control of Fujian and Taiwan Crops, Institute of Applied Ecology, International Joint Research Laboratory of Ecological Pest Control, Ministry of Education, Ministerial and Provincial Joint Innovation Centre for Safety Production of Cross-Strait Crops, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Uroosa Zaheer
- State Key Laboratory for Ecological Pest Control of Fujian and Taiwan Crops, Institute of Applied Ecology, International Joint Research Laboratory of Ecological Pest Control, Ministry of Education, Ministerial and Provincial Joint Innovation Centre for Safety Production of Cross-Strait Crops, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Yuanyuan Liu
- State Key Laboratory for Ecological Pest Control of Fujian and Taiwan Crops, Institute of Applied Ecology, International Joint Research Laboratory of Ecological Pest Control, Ministry of Education, Ministerial and Provincial Joint Innovation Centre for Safety Production of Cross-Strait Crops, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Yi Guo
- Plant Protection Research Institute, Guangdong Academy of Agricultural Sciences, Key Laboratory of Green Prevention and Control on Fruits and Vegetables in South China Ministry of Agriculture and Rural Affairs, Guangdong Provincial Key Laboratory of High Technology for Plant Protection, Guangzhou 510640, China
| | - Weiyi He
- State Key Laboratory for Ecological Pest Control of Fujian and Taiwan Crops, Institute of Applied Ecology, International Joint Research Laboratory of Ecological Pest Control, Ministry of Education, Ministerial and Provincial Joint Innovation Centre for Safety Production of Cross-Strait Crops, Fujian Agriculture and Forestry University, Fuzhou 350002, China
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Guo J, Shi J, Han H, Rwomushana I, Ali A, Myint Y, Wang Z. Competitive interactions between invasive fall armyworm and Asian corn borer at intraspecific and interspecific level on the same feeding guild. INSECT SCIENCE 2024; 31:1313-1325. [PMID: 38053447 DOI: 10.1111/1744-7917.13300] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2023] [Revised: 09/27/2023] [Accepted: 10/25/2023] [Indexed: 12/07/2023]
Abstract
Interspecific competition is an important factor in the population dynamics and geographical distribution of insect populations. Fall armyworm (FAW), Spodoptera frugiperda, an invasive species, and the Asian corn borer (ACB), Ostrinia furnacalis, a native pest species are major pests on maize in China, posing a threat to maize yield and grain quality. A series of laboratory, greenhouse, and field experiments were conducted to elucidate the competitive interactions between FAW and ACB. In the laboratory experiments, FAW exhibited aggressive behaviors more frequently when compared with ACB, while the latter species exhibited defense behaviors more frequently. Higher intraspecific competition was recorded in the FAW conspecific rather than in ACB, particularly in the 6th larval stage. FAW had a higher interspecific competitive advantage through intraguild predation over ACB, resulting in partial or complete displacement ACB when initially the ratio of the 2 species was 1 : 1. The interspecific competition also had significantly influenced on the population parameters, defensive enzymes, and nutrient of these 2 species. Competitive interaction proved that the response of superoxide, catalase, and soluble protein in FAW were significantly increased, whereas the total sugar content in both species was substantially decreased. Survival rate, and the plant damage that co-infested by both species varied significantly among the sequential combinations under greenhouse and field conditions. FAW consistently exhibited stronger intraspecific aggression than ACB under laboratory and field conditions when co-existing on the same feeding guild. These findings contribute to efforts toward the improvement of integrated pest management programs for FAW, in decision making for invasive and native pests' management strategies to reduce the high risks of FAW and ACB outbreaks.
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Affiliation(s)
- Jingfei Guo
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Jianqin Shi
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Hailiang Han
- Zhejiang Dongyang Maize Research Institute, Dongyang, Zhejiang, China
| | | | - Abid Ali
- Department of Entomology, University of Agriculture, Faisalabad, Punjab, Pakistan
| | - Yeeyee Myint
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China
- Plant Protection Division, Department of Agriculture, Ministry of Agriculture, Livestock and Irrigation, Yangon, Myanmar
| | - Zhenying Wang
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China
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Zhang Q, Zhang Y, Zhang K, Liu H, Gou Y, Li C, Haq IU, Quandahor P, Liu C. Molecular Characterization Analysis and Adaptive Responses of Spodoptera frugiperda (Lepidoptera: Noctuidae) to Nutritional and Enzymatic Variabilities in Various Maize Cultivars. PLANTS (BASEL, SWITZERLAND) 2024; 13:597. [PMID: 38475444 DOI: 10.3390/plants13050597] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/06/2024] [Revised: 02/19/2024] [Accepted: 02/20/2024] [Indexed: 03/14/2024]
Abstract
The fall armyworm, Spodoptera frugiperda Smith (Lepidoptera: Noctuidae), a common agricultural pest known for its extensive migration and wide host ranges, causes considerable harm to maize (Zea mays L.). In this study, we utilized two molecular marker genes, COI and Tpi, to compare the genetic characteristics of the collected original samples. Additionally, through an interactive study between S. frugiperda larvae and six maize varieties aiming to understand the insect's adaptability and resistance mechanisms, our analysis revealed that both the COI and Tpi genes identified S. frugiperda as the corn strain. Further examination of the larvae showed significant differences in nutritional indices, digestive, and detoxification enzyme activities. Special maize varieties were found to offer higher efficiency in nutrient conversion and assimilation compared with common varieties. This study revealed adaptations in S. frugiperda's digestive and detoxification processes in response to the different maize varieties. For instance, larvae reared on common maize exhibited elevated amylase and lipase activities. Interestingly, detoxification enzyme activities exhibited different patterns of variation in different maize varieties. The Pearson correlation analysis between nutritional indices, enzyme activities, and the nutritional content and secondary metabolites of maize leaves provided deeper insights into the pest's adaptability. The results highlighted significant relationships between specific nutritional components in maize and the physiological responses of S. frugiperda. Overall, our findings contribute substantially to the understanding of S. frugiperda's host plant adaptability, offering critical insights for the development of sustainable pest management strategies.
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Affiliation(s)
- Qiangyan Zhang
- Biocontrol Engineering Laboratory of Crop Diseases and Pests of Gansu Province, College of Plant Protection, Gansu Agricultural University, Lanzhou 730070, China
| | - Yanlei Zhang
- Biocontrol Engineering Laboratory of Crop Diseases and Pests of Gansu Province, College of Plant Protection, Gansu Agricultural University, Lanzhou 730070, China
- Dingxi Plant Protection and Quarantine Station, Dingxi 743099, China
| | - Kexin Zhang
- Biocontrol Engineering Laboratory of Crop Diseases and Pests of Gansu Province, College of Plant Protection, Gansu Agricultural University, Lanzhou 730070, China
| | - Huiping Liu
- Biocontrol Engineering Laboratory of Crop Diseases and Pests of Gansu Province, College of Plant Protection, Gansu Agricultural University, Lanzhou 730070, China
| | - Yuping Gou
- Biocontrol Engineering Laboratory of Crop Diseases and Pests of Gansu Province, College of Plant Protection, Gansu Agricultural University, Lanzhou 730070, China
| | - Chunchun Li
- Biocontrol Engineering Laboratory of Crop Diseases and Pests of Gansu Province, College of Plant Protection, Gansu Agricultural University, Lanzhou 730070, China
| | - Inzamam Ul Haq
- State Key Laboratory of Ecological Pest Control for Fujian and Taiwan Crops, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Peter Quandahor
- CSIR-Savanna Agricultural Research Institute, Tamale P.O. Box 52, Ghana
| | - Changzhong Liu
- Biocontrol Engineering Laboratory of Crop Diseases and Pests of Gansu Province, College of Plant Protection, Gansu Agricultural University, Lanzhou 730070, China
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Gouda MNR, Jeevan H, Shashank HG. CRISPR/Cas9: a cutting-edge solution for combatting the fall armyworm, Spodoptera frugiperda. Mol Biol Rep 2023; 51:13. [PMID: 38085335 DOI: 10.1007/s11033-023-08986-1] [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: 08/17/2023] [Accepted: 10/13/2023] [Indexed: 12/18/2023]
Abstract
The utilization of CRISPR/Cas9 in Spodoptera frugiperda, commonly known as fall armyworm, presents a groundbreaking avenue for pest management. With its ability to precisely modify the insect's genome, CRISPR/Cas9 offers innovative strategies to combat this destructive pest. The application of CRISPR/Cas9 in S. frugiperda holds immense potential. It enables the identification and functional analysis of key genes associated with its behavior, development, and insecticide resistance. This knowledge can unveil novel target sites for more effective and specific insecticides. Additionally, CRISPR/Cas9 can facilitate the development of population control methods by disrupting vital genes essential for survival. However, challenges such as off-target effects and the efficient delivery of CRISPR/Cas9 components remain. Addressing these obstacles is vital to ensure accurate and reliable results. Furthermore, ethical considerations, biosafety protocols, and regulatory frameworks must be integral to the adoption of this technology. Looking forward, CRISPR/Cas9-based gene drive systems hold the potential to promulgate desirable genetic traits within S. frugiperda populations, offering a sustainable and eco-friendly approach. This could curtail their reproductive capabilities or make them more susceptible to certain interventions. In conclusion, CRISPR/Cas9 presents a transformative platform for precise and targeted pest management in S. frugiperda. By deciphering the insect's genetic makeup and developing innovative strategies, we can mitigate the devastating impact of fall armyworm on agriculture while ensuring environmental sustainability.
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Affiliation(s)
- M N Rudra Gouda
- Division of Entomology, Indian Agricultural Research Institute, New Delhi, 110012, India.
| | - H Jeevan
- Division of Nematology, Indian Agricultural Research Institute, New Delhi, 110012, India
| | - H G Shashank
- Division of Plant Genetic Resources, Indian Agricultural Research Institute, New Delhi, 110012, India
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Asea G, Kwemoi DB, Sneller C, Kasozi CL, Das B, Musundire L, Makumbi D, Beyene Y, Prasanna BM. Genetic trends for yield and key agronomic traits in pre-commercial and commercial maize varieties between 2008 and 2020 in Uganda. FRONTIERS IN PLANT SCIENCE 2023; 14:1020667. [PMID: 36968404 PMCID: PMC10036907 DOI: 10.3389/fpls.2023.1020667] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/16/2022] [Accepted: 02/22/2023] [Indexed: 06/18/2023]
Abstract
Estimating genetic gains is vital to optimize breeding programs for increased efficiency. Genetic gains should translate into productivity gains if returns to investments in breeding and impact are to be realized. The objective of this study was to estimate genetic gain for grain yield and key agronomic traits in pre-commercial and commercial maize varieties from public and private breeding programs tested in (i) national performance trials (NPT), (ii) era trial and, (iii) compare the trends with the national average. The study used (i) historical NPT data on 419 improved maize varieties evaluated in 23 trials at 6-8 locations each between 2008 and 2020, and (ii) data from an era trial of 54 maize hybrids released between 1999 and 2020. The NPT data was first analyzed using a mixed model and resulting estimate for each entry was regressed onto its first year of testing. Analysis was done over all entries, only entries from National Agricultural Research Organization (NARO), International Maize and Wheat Improvement Center (CIMMYT), or private seed companies. Estimated genetic gain was 2.25% or 81 kg ha-1 year-1 from the NPT analysis. A comparison of genetic trends by source indicated that CIMMYT entries had a gain of 1.98% year-1 or 106 kg ha-1 year-1. In contrast, NARO and private sector maize entries recorded genetic gains of 1.30% year-1 (59 kg ha-1 year-1) and 1.71% year-1 (79 kg ha-1 year-1), respectively. Varieties from NARO and private sector showed comparable mean yields of 4.56 t ha-1 and 4.62 t ha-1, respectively, while hybrids from CIMMYT had a mean of 5.37 t ha-1. Era analysis indicated significant genetic gain of 1.69% year-1 or 55 kg ha-1 year-1, while a significant national productivity gain of 1.48% year-1 (37 kg ha-1 year-1) was obtained. The study, thus, demonstrated the importance of public-private partnerships in development and delivery of new genetics to farmers in Uganda.
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Affiliation(s)
- Godfrey Asea
- National Crops Resources Research Institute, National Agricultural Research Organization, Kampala, Uganda
| | - Daniel Bomet Kwemoi
- National Crops Resources Research Institute, National Agricultural Research Organization, Kampala, Uganda
| | - Clay Sneller
- Department of Horticulture and Crop Science, The Ohio State University, Wooster, OH, United States
| | - Charles L. Kasozi
- National Crops Resources Research Institute, National Agricultural Research Organization, Kampala, Uganda
| | - Biswanath Das
- Global Maize Program, International Maize and Wheat Improvement Center (CIMMYT), Nairobi, Kenya
| | - Lennin Musundire
- Global Maize Program, International Maize and Wheat Improvement Center (CIMMYT), Nairobi, Kenya
| | - Dan Makumbi
- Global Maize Program, International Maize and Wheat Improvement Center (CIMMYT), Nairobi, Kenya
| | - Yoseph Beyene
- Global Maize Program, International Maize and Wheat Improvement Center (CIMMYT), Nairobi, Kenya
| | - Boddupalli M. Prasanna
- Global Maize Program, International Maize and Wheat Improvement Center (CIMMYT), Nairobi, Kenya
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Fajemisin A, Racelis A, Kariyat R. Cascading Effects of Cover Crops on the Subsequent Cash Crop Defense against the Polyphagous Herbivore Fall Armyworm ( Spodoptera frugiperda). INSECTS 2023; 14:177. [PMID: 36835746 PMCID: PMC9959575 DOI: 10.3390/insects14020177] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/13/2023] [Revised: 02/02/2023] [Accepted: 02/07/2023] [Indexed: 06/18/2023]
Abstract
Recent studies have started to show that the benefits of cover crops can cascade to the cash crop growing seasons. However, the impact of cover crops on the subsequent cash crop defense against herbivores is not well understood. To test this, we conducted a field and laboratory study to assess the possible cascading effects of cover crops such as Vigna unguiculata, Sorghum drummondii, Raphanus sativus, and Crotalaria juncea on the subsequent cash crop (Sorghum bicolor) defense against the notorious polyphagous herbivore fall armyworm (Spodoptera frugiperda) across three farms in the Lower Rio Grande Valley. Our field and laboratory studies showed that the cash crop planted in the cover crop treatment differentially affected S. frugiperda. More specifically, we found that cover crops have positive effects on the growth and development of S. frugiperda on the subsequent cash crop, including both larval and pupal parameters. However, our experiments on physical and chemical defenses in cash crops failed to show any significant differences between cover and control. Collectively, our results add an additional line of evidence on the effects of cover crops on pest dynamics outside the cash crop season, a key consideration for the selection and management of cover crops and cash crops, whose underlying mechanisms need to be examined further.
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Affiliation(s)
- Adegboyega Fajemisin
- School of Earth Environmental and Marine Sciences, University of Texas Rio Grande Valley, Edinburg, TX 78539, USA
| | - Alexis Racelis
- School of Earth Environmental and Marine Sciences, University of Texas Rio Grande Valley, Edinburg, TX 78539, USA
| | - Rupesh Kariyat
- Department of Entomology and Plant Pathology, University of Arkansas, Fayetteville, AR 72701, USA
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Kamweru I, Beyene Y, Bruce AY, Makumbi D, Adetimirin VO, Pérez-Rodríguez P, Toledo F, Crossa J, Prasanna BM, Gowda M. Genetic analyses of tropical maize lines under artificial infestation of fall armyworm and foliar diseases under optimum conditions. FRONTIERS IN PLANT SCIENCE 2023; 14:1086757. [PMID: 36743507 PMCID: PMC9896009 DOI: 10.3389/fpls.2023.1086757] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/01/2022] [Accepted: 01/04/2023] [Indexed: 06/18/2023]
Abstract
Development and deployment of high-yielding maize varieties with native resistance to Fall armyworm (FAW), turcicum leaf blight (TLB), and gray leaf spot (GLS) infestation is critical for addressing the food insecurity in sub-Saharan Africa. The objectives of this study were to determine the inheritance of resistance for FAW, identity hybrids which in addition to FAW resistance, also show resistance to TLB and GLS, and investigate the usefulness of models based on general combining ability (GCA) and SNP markers in predicting the performance of new untested hybrids. Half-diallel mating scheme was used to generate 105 F1 hybrids from 15 parents and another 55 F1 hybrids from 11 parents. These were evaluated in two experiments, each with commercial checks in multiple locations under FAW artificial infestation and optimum management in Kenya. Under artificial FAW infestation, significant mean squares among hybrids and hybrids x environment were observed for most traits in both experiments, including at least one of the three assessments carried out for foliar damage caused by FAW. Interaction of GCA x environment and specific combining ability (SCA) x environment interactions were significant for all traits under FAW infestation and optimal conditions. Moderate to high heritability estimates were observed for GY under both management conditions. Correlation between GY and two of the three scorings (one and three weeks after infestation) for foliar damage caused by FAW were negative (-0.27 and -0.38) and significant. Positive and significant correlation (0.84) was observed between FAW-inflicted ear damage and the percentage of rotten ears. We identified many superior-performing hybrids compared to the best commercial checks for both GY and FAW resistance associated traits. Inbred lines CML312, CML567, CML488, DTPYC9-F46-1-2-1-2, CKDHL164288, CKDHL166062, and CLRCY039 had significant and positive GCA for GY (positive) and FAW resistance-associated traits (negative). CML567 was a parent in four of the top ten hybrids under optimum and FAW conditions. Both additive and non-additive gene action were important in the inheritance of FAW resistance. Both GCA and marker-based models showed high correlation with field performance, but marker-based models exhibited considerably higher correlation. The best performing hybrids identified in this study could be used as potential single cross testers in the development of three-way FAW resistance hybrids. Overall, our results provide insights that help breeders to design effective breeding strategies to develop FAW resistant hybrids that are high yielding under FAW and optimum conditions.
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Affiliation(s)
- Isaac Kamweru
- International Maize and Wheat Improvement Center (CIMMYT), Nairobi, Kenya
- Pan African University, Life and Earth Sciences Institute (Including Health and Agriculture), Ibadan, Nigeria
| | - Yoseph Beyene
- International Maize and Wheat Improvement Center (CIMMYT), Nairobi, Kenya
| | - Anani Y. Bruce
- International Maize and Wheat Improvement Center (CIMMYT), Nairobi, Kenya
| | - Dan Makumbi
- International Maize and Wheat Improvement Center (CIMMYT), Nairobi, Kenya
| | - Victor O. Adetimirin
- Department of Crop and Horticultural Sciences, University of Ibadan, Ibadan, Nigeria
| | - Paulino Pérez-Rodríguez
- Colegio de Postgraduados, Montecillo, Mexico
- Biometrics and Statistics Unit, International Maize and Wheat Improvement Center (CIMMYT), Texcoco, Mexico
| | - Fernando Toledo
- Biometrics and Statistics Unit, International Maize and Wheat Improvement Center (CIMMYT), Texcoco, Mexico
| | - Jose Crossa
- Biometrics and Statistics Unit, International Maize and Wheat Improvement Center (CIMMYT), Texcoco, Mexico
| | | | - Manje Gowda
- International Maize and Wheat Improvement Center (CIMMYT), Nairobi, Kenya
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Krishna VV, Lantican MA, Prasanna B, Pixley K, Abdoulaye T, Menkir A, Bänziger M, Erenstein O. Impact of CGIAR maize germplasm in Sub-Saharan Africa. FIELD CROPS RESEARCH 2023; 290:108756. [PMID: 36597471 PMCID: PMC9760565 DOI: 10.1016/j.fcr.2022.108756] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/09/2022] [Revised: 10/23/2022] [Accepted: 11/05/2022] [Indexed: 06/17/2023]
Abstract
This study reports on the adoption and impacts of CGIAR-related maize varieties in 18 major maize-producing countries in sub-Saharan Africa (SSA) during 1995-2015. Of the 1345 maize varieties released during this timeframe, approximately 60% had a known CGIAR parentage. About 34% (9.5 million ha) of the total maize area in 2015 was cultivated with 'new' CGIAR-related maize varieties released between 1995 and 2015. In the same year, an additional 13% of the maize area was cultivated with 'old' CGIAR-related maize varieties released before 1995. The aggregate annual economic benefit of using new CGIAR-related maize germplasm for yield increase in SSA was estimated at US$1.1-1.6 billion in 2015, which we attributed equally to co-investments by CGIAR funders, public-sector national research and extension programs, and private sector partners. Given that the annual global investment in CGIAR maize breeding at its maximum was US$30 million, the benefit-cost ratios for the CGIAR investment and CGIAR-attributable portion of economic benefits varied from 12:1-17:1, under the assumption of a 5-year lag in the research investment to yield returns. The study also discusses the methodological challenges involved in large-scale impact assessments. Post-2015 CGIAR tropical maize breeding efforts have had a strong emphasis on stress tolerance.
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Key Words
- CGIAR
- CIMMYT, International Maize and Wheat Improvement Center
- CRP, CGIAR Research Program
- Crop research program
- DPD, dynamic panel data
- Economic impact
- GMM, generalized method of moments
- IITA, International Institute of Tropical Agriculture
- Improved germplasm
- NARS, National Agriculture Research System
- OLS, ordinary least squares
- OPVs, open-pollinated varieties
- QPM, quality protein maize
- R&D, research-and-development
- SME, small and medium enterprise
- SSA, sub-Saharan Africa
- Varietal adoption
- proVA, provitamin-A
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Affiliation(s)
- Vijesh V. Krishna
- International Maize and Wheat Improvement Center (CIMMYT), ICRISAT Campus, Patancheru, 502324 Hyderabad, India
| | | | | | | | - Tahirou Abdoulaye
- International Institute of Tropical Agriculture (IITA), Bamako, Mali
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Babendreier D, Toepfer S, Bateman M, Kenis M. Potential Management Options for the Invasive Moth Spodoptera frugiperda in Europe. JOURNAL OF ECONOMIC ENTOMOLOGY 2022; 115:1772-1782. [PMID: 36515106 PMCID: PMC9748578 DOI: 10.1093/jee/toac089] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 03/23/2022] [Indexed: 06/17/2023]
Abstract
We here review and discuss management options that growers in Europe could take in response to the expected invasion of the fall armyworm, Spodoptera frugiperda (Lepidoptera: Noctuidae). The focus is put on maize but the information provided is also relevant for other crops potentially affected. A sound forecasting system for fall armyworm both on a regional as well as at local scale should be established to alert growers as early as possible. Whilst a number of cultural control methods are adopted by maize growers in different regions globally to fight fall armyworm, many of them may either not be highly effective, too laborious, or otherwise unfeasible within the mechanized crop production systems used in Europe. Potential is seen in the stimulation of natural enemies through conservation biocontrol approaches, e.g., the planting of flower strips or intermediate cover crops, reducing tillage intensity, and avoiding broad-spectrum insecticides. To manage fall armyworm infestations, several effective biologically-based products are available globally, and some in Europe, e.g., based on specific baculoviruses, certain Bacillus thuringiensis strains, few entomopathogenic nematodes, and a number of botanicals. These should be given priority to avoid a major influx of insecticides into the maize agro-ecosystem once the fall armyworm arrives and in case growers are not prepared. Plant protection companies, particularly biocontrol companies should act proactively in starting registration of ingredients and products against fall armyworm in Europe. European maize growers should be made aware, in time, of key features of this new invasive pest and appropriate control options.
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Affiliation(s)
| | - Stefan Toepfer
- CABI Switzerland, Rue des Grillons 1, 2800 Delémont, Switzerland
| | - Melanie Bateman
- CABI Switzerland, Rue des Grillons 1, 2800 Delémont, Switzerland
| | - Marc Kenis
- CABI Switzerland, Rue des Grillons 1, 2800 Delémont, Switzerland
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11
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He C, Lin Y, Zhang Y, Tong L, Ding Y, Yao M, Liu Q, Zeng R, Chen D, Song Y. Aboveground herbivory does not affect mycorrhiza-dependent nitrogen acquisition from soil but inhibits mycorrhizal network-mediated nitrogen interplant transfer in maize. FRONTIERS IN PLANT SCIENCE 2022; 13:1080416. [PMID: 36589048 PMCID: PMC9795027 DOI: 10.3389/fpls.2022.1080416] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/26/2022] [Accepted: 11/29/2022] [Indexed: 06/17/2023]
Abstract
Arbuscular mycorrhizal fungi (AMF) are considered biofertilizers for sustainable agriculture due to their ability to facilitate plant uptake of important mineral elements, such as nitrogen (N). However, plant mycorrhiza-dependent N uptake and interplant transfer may be highly context-dependent, and whether it is affected by aboveground herbivory remains largely unknown. Here, we used 15N labeling and tracking to examine the effect of aboveground insect herbivory by Spodoptera frugiperda on mycorrhiza-dependent N uptake in maize (Zea mays L.). To minimize consumption differences and 15N loss due to insect chewing, insect herbivory was simulated by mechanical wounding and oral secretion of S. frugiperda larvae. Inoculation with Rhizophagus irregularis (Rir) significantly improved maize growth, and N/P uptake. The 15N labeling experiment showed that maize plants absorbed N from soils via the extraradical mycelium of mycorrhizal fungi and from neighboring plants transferred by common mycorrhizal networks (CMNs). Simulated aboveground leaf herbivory did not affect mycorrhiza-mediated N acquisition from soil. However, CMN-mediated N transfer from neighboring plants was blocked by leaf simulated herbivory. Our findings suggest that aboveground herbivory inhibits CMN-mediated N transfer between plants but does not affect N acquisition from soil solutions via extraradical mycorrhizal mycelium.
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Affiliation(s)
- Chenling He
- State Key Laboratory of Ecological Pest Control for Fujian and Taiwan Crops, Breeding and Multiple Utilization of Crops, College of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, China
- Key Laboratory of Ministry of Education for Genetics, Breeding and Multiple Utilization of Crops, College of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Yibin Lin
- State Key Laboratory of Ecological Pest Control for Fujian and Taiwan Crops, Breeding and Multiple Utilization of Crops, College of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, China
- Key Laboratory of Ministry of Education for Genetics, Breeding and Multiple Utilization of Crops, College of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Yifang Zhang
- State Key Laboratory of Ecological Pest Control for Fujian and Taiwan Crops, Breeding and Multiple Utilization of Crops, College of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, China
- Key Laboratory of Ministry of Education for Genetics, Breeding and Multiple Utilization of Crops, College of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Lu Tong
- State Key Laboratory of Ecological Pest Control for Fujian and Taiwan Crops, Breeding and Multiple Utilization of Crops, College of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, China
- Key Laboratory of Ministry of Education for Genetics, Breeding and Multiple Utilization of Crops, College of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Yuanxing Ding
- State Key Laboratory of Ecological Pest Control for Fujian and Taiwan Crops, Breeding and Multiple Utilization of Crops, College of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, China
- Key Laboratory of Ministry of Education for Genetics, Breeding and Multiple Utilization of Crops, College of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Min Yao
- State Key Laboratory of Ecological Pest Control for Fujian and Taiwan Crops, Breeding and Multiple Utilization of Crops, College of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, China
- Key Laboratory of Ministry of Education for Genetics, Breeding and Multiple Utilization of Crops, College of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Qian Liu
- State Key Laboratory of Ecological Pest Control for Fujian and Taiwan Crops, Breeding and Multiple Utilization of Crops, College of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, China
- Key Laboratory of Ministry of Education for Genetics, Breeding and Multiple Utilization of Crops, College of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Rensen Zeng
- State Key Laboratory of Ecological Pest Control for Fujian and Taiwan Crops, Breeding and Multiple Utilization of Crops, College of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, China
- Key Laboratory of Ministry of Education for Genetics, Breeding and Multiple Utilization of Crops, College of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, China
- Institute of Chemical Ecology and Crop Resistance, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Dongmei Chen
- State Key Laboratory of Ecological Pest Control for Fujian and Taiwan Crops, Breeding and Multiple Utilization of Crops, College of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, China
- Key Laboratory of Ministry of Education for Genetics, Breeding and Multiple Utilization of Crops, College of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, China
- Institute of Chemical Ecology and Crop Resistance, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Yuanyuan Song
- State Key Laboratory of Ecological Pest Control for Fujian and Taiwan Crops, Breeding and Multiple Utilization of Crops, College of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, China
- Key Laboratory of Ministry of Education for Genetics, Breeding and Multiple Utilization of Crops, College of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, China
- Institute of Chemical Ecology and Crop Resistance, Fujian Agriculture and Forestry University, Fuzhou, China
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12
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Prasanna BM, Burgueño J, Beyene Y, Makumbi D, Asea G, Woyengo V, Tarekegne A, Magorokosho C, Wegary D, Ndhlela T, Zaman-Allah M, Matova PM, Mwansa K, Mashingaidze K, Fato P, Teklewold A, Vivek BS, Zaidi PH, Vinayan MT, Patne N, Rakshit S, Kumar R, Jat SL, Singh SB, Kuchanur PH, Lohithaswa HC, Singh NK, Koirala KB, Ahmed S, Vicente FS, Dhliwayo T, Cairns JE. Genetic trends in CIMMYT's tropical maize breeding pipelines. Sci Rep 2022; 12:20110. [PMID: 36418412 PMCID: PMC9684471 DOI: 10.1038/s41598-022-24536-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2022] [Accepted: 11/16/2022] [Indexed: 11/24/2022] Open
Abstract
Fostering a culture of continuous improvement through regular monitoring of genetic trends in breeding pipelines is essential to improve efficiency and increase accountability. This is the first global study to estimate genetic trends across the International Maize and Wheat Improvement Center (CIMMYT) tropical maize breeding pipelines in eastern and southern Africa (ESA), South Asia, and Latin America over the past decade. Data from a total of 4152 advanced breeding trials and 34,813 entries, conducted at 1331 locations in 28 countries globally, were used for this study. Genetic trends for grain yield reached up to 138 kg ha-1 yr-1 in ESA, 118 kg ha-1 yr-1 South Asia and 143 kg ha-1 yr-1 in Latin America. Genetic trend was, in part, related to the extent of deployment of new breeding tools in each pipeline, strength of an extensive phenotyping network, and funding stability. Over the past decade, CIMMYT's breeding pipelines have significantly evolved, incorporating new tools/technologies to increase selection accuracy and intensity, while reducing cycle time. The first pipeline, Eastern Africa Product Profile 1a (EA-PP1a), to implement marker-assisted forward-breeding for resistance to key diseases, coupled with rapid-cycle genomic selection for drought, recorded a genetic trend of 2.46% per year highlighting the potential for deploying new tools/technologies to increase genetic gain.
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Affiliation(s)
- Boddupalli M. Prasanna
- International Maize and Wheat Improvement Center (CIMMYT), ICRAF Campus, UN Avenue, Gigiri, P.O. Box 1041, Nairobi, 00621 Kenya
| | | | - Yoseph Beyene
- International Maize and Wheat Improvement Center (CIMMYT), ICRAF Campus, UN Avenue, Gigiri, P.O. Box 1041, Nairobi, 00621 Kenya
| | - Dan Makumbi
- International Maize and Wheat Improvement Center (CIMMYT), ICRAF Campus, UN Avenue, Gigiri, P.O. Box 1041, Nairobi, 00621 Kenya
| | - Godfrey Asea
- National Crops Resources Research Institute (NaCRRI), National Agricultural Research Organization, P.O. Box 7084, Kampala, Uganda
| | - Vincent Woyengo
- Kenya Agricultural and Livestock Research Organization (KALRO), P.O. Box 169, Kakamega, 50100 Kenya
| | - Amsal Tarekegne
- CIMMYT, P.O. Box MP163, Harare, Zimbabwe
- Present Address: Zamseed, Lusaka, Zambia
| | | | | | | | | | - Prince M. Matova
- Department of Research and Specialist Services (DR&SS), Crop Breeding Institute, 5th Street Extension, Harare, Zimbabwe
- Present Address: Mukushi Seeds (Pvt) Ltd, Harare, Zimbabwe
| | - Kabamba Mwansa
- Zambia Agricultural Research Institute (ZARI), Lusaka, Zambia
| | | | - Pedro Fato
- Agricultural Research Institute of Mozambique (IIAM), Maputo, Mozambique
| | | | - B. S. Vivek
- CIMMYT, ICRISAT Campus, Patancheru, Greater Hyderabad, Telangana India
| | - P. H. Zaidi
- CIMMYT, ICRISAT Campus, Patancheru, Greater Hyderabad, Telangana India
| | - M. T. Vinayan
- CIMMYT, ICRISAT Campus, Patancheru, Greater Hyderabad, Telangana India
| | - Nagesh Patne
- CIMMYT, ICRISAT Campus, Patancheru, Greater Hyderabad, Telangana India
| | - Sujay Rakshit
- ICAR-Indian Institute of Maize Research (IIMR), Ludhiana, Punjab India
| | - Ramesh Kumar
- ICAR-Indian Institute of Maize Research (IIMR), Ludhiana, Punjab India
| | - S. L. Jat
- ICAR-Indian Institute of Maize Research (IIMR), Ludhiana, Punjab India
| | - S. B. Singh
- ICAR-Indian Institute of Maize Research (IIMR), Ludhiana, Punjab India
| | - Prakash H. Kuchanur
- University of Agricultural Sciences (UAS), Raichur College of Agriculture, Bheemarayanagudi, Yadagiri, Karnataka India
| | - H. C. Lohithaswa
- University of Agricultural Sciences (UAS), Bangalore, Karnataka India
| | - N. K. Singh
- G.B. Pant, University of Agriculture and Technology, Pantnagar, Uttarakhand India
| | - K. B. Koirala
- Nepal Agricultural Research Council (NARC), Kathmandu, Nepal
| | - Salahuddin Ahmed
- Bangladesh Wheat and Maize Research Institute (BWMRI), Dinajpur, Bangladesh
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13
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Buerstmayr H, Dreccer MF, Miladinović D, Qiu L, Rajcan I, Reif J, Varshney RK, Vollmann J. Plant breeding for increased sustainability: challenges, opportunities and progress. TAG. THEORETICAL AND APPLIED GENETICS. THEORETISCHE UND ANGEWANDTE GENETIK 2022; 135:3679-3683. [PMID: 36355071 DOI: 10.1007/s00122-022-04238-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/03/2022] [Accepted: 10/10/2022] [Indexed: 06/16/2023]
Affiliation(s)
- Hermann Buerstmayr
- University of Natural Resources and Life Sciences Vienna, Vienna, Austria.
| | - Maria Fernanda Dreccer
- Commonwealth Scientific and Industrial Research Organisation - Agriculture and Food, Queensland Bioscience Precinct, 306 Carmody Rd, St Lucia, QLD, 4067, Australia
| | - Dragana Miladinović
- Institute of Field and Vegetable Crops, National Institute of Republic of Serbia, Novi Sad, Serbia
| | - Lijuan Qiu
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Istvan Rajcan
- Department of Plant Agriculture, University of Guelph, Guelph, ON, Canada
| | - Jochen Reif
- Leibniz Institute of Plant Genetics and Crop Plant Research (IPK), 06466, Stadt Seeland, Germany
| | - Rajeev K Varshney
- Centre for Crop and Food Innovation, State Agricultural Biotechnology Centre, Food Futures Institute, Murdoch University, Murdoch, Australia
| | - Johann Vollmann
- University of Natural Resources and Life Sciences Vienna, Vienna, Austria
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14
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Anyanda GN, Bruce AY, Makumbi D, Ahonsi M, Kahuthia-Gathu R, Namikoye SE, Beyene Y, Prasanna BM. Reproductive potential of fall armyworm Spodoptera frugiperda (J.E. Smith) and effects of feeding on diverse maize genotypes under artificial infestation. FRONTIERS IN INSECT SCIENCE 2022; 2:950815. [PMID: 38468758 PMCID: PMC10926527 DOI: 10.3389/finsc.2022.950815] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/23/2022] [Accepted: 08/09/2022] [Indexed: 03/13/2024]
Abstract
Fall armyworm (FAW) Spodoptera frugiperda (J.E. Smith) has become a major threat to maize production in Africa. In this study, six maize genotypes were assessed for their resistance to FAW under artificial infestation in both laboratory and net house conditions. These included two FAW-tolerant hybrids (CKHFAW180294 and CKH191221), two commercial hybrids (WE2115 and CKH10717), and two open-pollinated varieties (ZM523 and KDV4). Larval development time and reproductive potential were assessed on maize leaves in the laboratory and a life table for FAW was constructed. The maize genotypes were also artificially infested with three FAW neonates at two phenological stages (V5 and V7) and reproductive stage (R1) in the net house. Leaf and ear damage scores were recorded on a scale of 1-9. Larval development time varied significantly between maize genotypes with the highest on CKH191221 (16.4 days) and the lowest on KDV4 (13.7 days). The intrinsic rate of natural increase for life tables varied from 0.24 on CKH191221 to 0.41 on KDV4. Mean generation time of FAW ranged from 17.6 to 22.8 days on KDV4 and CKH191221, respectively. Foliar damage was the lowest on CKH191221, and the highest on KDV4 at V7 infestation stage in week 1. CKH191221 had the lowest ear damage score, whereas ZM523 had the highest scores at V5 infestation stage. The highest and lowest yield reductions were observed on ZM523 (64%) at V7 infestation stage and CKHFAW180294 (6%) at R1 infestation stage, respectively. The results indicated the potential for developing tropical mid-altitude maize germplasm with native genetic resistance to FAW.
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Affiliation(s)
- Geoffrey N. Anyanda
- Global Maize Program (GMP), International Maize and Wheat Improvement Centre (CIMMYT), Nairobi, Kenya
- Department of Agriculture Science and Technology, Kenyatta University, Nairobi, Kenya
| | - Anani Y. Bruce
- Global Maize Program (GMP), International Maize and Wheat Improvement Centre (CIMMYT), Nairobi, Kenya
| | - Dan Makumbi
- Global Maize Program (GMP), International Maize and Wheat Improvement Centre (CIMMYT), Nairobi, Kenya
| | - Monday Ahonsi
- Global Maize Program (GMP), International Maize and Wheat Improvement Centre (CIMMYT), Nairobi, Kenya
- Amobant LLC, Fort Wayne, IN, United States
| | - Ruth Kahuthia-Gathu
- Department of Agriculture Science and Technology, Kenyatta University, Nairobi, Kenya
| | - Samita E. Namikoye
- Department of Agriculture Science and Technology, Kenyatta University, Nairobi, Kenya
| | - Yoseph Beyene
- Global Maize Program (GMP), International Maize and Wheat Improvement Centre (CIMMYT), Nairobi, Kenya
| | - B. M. Prasanna
- Global Maize Program (GMP), International Maize and Wheat Improvement Centre (CIMMYT), Nairobi, Kenya
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15
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Tepa-Yotto GT, Chinwada P, Rwomushana I, Goergen G, Subramanian S. Integrated management of Spodoptera frugiperda 6 years post detection in Africa: a review. CURRENT OPINION IN INSECT SCIENCE 2022; 52:100928. [PMID: 35534003 DOI: 10.1016/j.cois.2022.100928] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Revised: 04/27/2022] [Accepted: 04/28/2022] [Indexed: 05/28/2023]
Abstract
The introduction of fall armyworm (FAW) Spodoptera frugiperda (JE Smith) (Lepidoptera: Noctuidae) on the African continent has led to paradigm shifts in pest control in maize systems, occasioned by year-round populations. The discovery of resident parasitoid species adapting to the new pest significantly informed decision-making toward avoiding highly hazardous synthetic insecticides to control the pest. A number of biopesticides have shown promise against the fall armyworm, providing a new arsenal for the sustainable management of this invasive pest. However, a few knowledge gaps remain for a fully integrated and sustainable FAW-management approach, particularly on host-resistance potential.
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Affiliation(s)
- Ghislain T Tepa-Yotto
- Biorisk Management Facility (BIMAF), International Institute of Tropical Agriculture (IITA-Benin), Cotonou, Benin; Ecole de Gestion et de Production Végétale et Semencière (EGPVS), Université Nationale d'Agriculture (UNA), Kétou, Benin.
| | - Peter Chinwada
- International Institute of Tropical Agriculture (IITA-Zambia), Lusaka, Zambia
| | - Ivan Rwomushana
- Centre for Agriculture and Bioscience International, Limuru Road, Muthaiga, PO Box 633-00621, Nairobi, Kenya
| | - Georg Goergen
- Biorisk Management Facility (BIMAF), International Institute of Tropical Agriculture (IITA-Benin), Cotonou, Benin
| | - Sevgan Subramanian
- Plant Health Theme, International Centre of Insect Physiology and Ecology (icipe), Nairobi 30772-00100, Kenya
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