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Fathima AA, Sanitha M, Tripathi L, Muiruri S. Cassava (
Manihot esculenta
) dual use for food and bioenergy: A review. Food Energy Secur 2022. [DOI: 10.1002/fes3.380] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Affiliation(s)
- Anwar Aliya Fathima
- Department of Bioinformatics Saveetha School of Engineering Saveetha Institute of Medical and Technical Sciences Chennai India
| | - Mary Sanitha
- Department of Bioinformatics Saveetha School of Engineering Saveetha Institute of Medical and Technical Sciences Chennai India
| | - Leena Tripathi
- International Institute of Tropical Agriculture (IITA) Nairobi Kenya
| | - Samwel Muiruri
- International Institute of Tropical Agriculture (IITA) Nairobi Kenya
- Department of Plant Sciences Kenyatta University Nairobi Kenya
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Zhong Y, Ahmed S, Deng G, Fan W, Zhang P, Wang H. Improved insect resistance against Spodoptera litura in transgenic sweetpotato by overexpressing Cry1Aa toxin. PLANT CELL REPORTS 2019; 38:1439-1448. [PMID: 31451933 DOI: 10.1007/s00299-019-02460-8] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/02/2019] [Accepted: 08/12/2019] [Indexed: 06/10/2023]
Abstract
Overexpressing the Cry1Aa gene in sweetpotato significantly reduced pest damage through disrupting the integrity of the midgut of Spodoptera litura larvae for resistance against target Lepidoptera insect pests in sweetpotato. Sweetpotato is susceptible to insect pests and diseases leading to yield losses during pest outbreaks. Lepidoptera insects such as S litura are especially important pests of sweetpotato. The effect of Cry1Aa gene on S. litura was investigated by overexpressing Cry1Aa gene in sweetpotato to relieve symptoms due to pest damage. When transgenic leaves were fed to the larvae of S. litura, the growth of the larvae was reduced, the larval quality decreased, and mortality was increased compared with the larvae that fed on wild-type leaves. Further anatomical analysis revealed that the columnar cells of the midgut epithelium of the BT group were significantly damaged, loosened, or disordered. Furthermore, the integrity of the midgut was destroyed. In addition, when potted seedlings of the wild-type and BT sweetpotato were inoculated with the same number of S. litura larvae, wild-type plants died on the eighth day after infestation, while BT transgenic lines still grew normally. This study showed that transgenic sweetpotato overexpressing Cry1Aa can prevent S. litura infestation, and thus increase the yield of sweetpotato.
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Affiliation(s)
- Yingying Zhong
- National Key Laboratory of Plant Molecular Genetics, CAS Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological Sciences, Chinese Academy of Science, Shanghai, 200032, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Sulaiman Ahmed
- National Key Laboratory of Plant Molecular Genetics, CAS Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological Sciences, Chinese Academy of Science, Shanghai, 200032, China
| | - Gaifang Deng
- National Key Laboratory of Plant Molecular Genetics, CAS Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological Sciences, Chinese Academy of Science, Shanghai, 200032, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Weijuan Fan
- Shanghai Key Laboratory of Plant Functional Genomics and Resources, Shanghai Chenshan Plant Science Research Center, Chinese Academy of Science, Shanghai Chenshan Botanical Garden, Shanghai, 201602, China
| | - Peng Zhang
- National Key Laboratory of Plant Molecular Genetics, CAS Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological Sciences, Chinese Academy of Science, Shanghai, 200032, China.
- University of Chinese Academy of Sciences, Beijing, 100049, China.
| | - Hongxia Wang
- National Key Laboratory of Plant Molecular Genetics, CAS Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological Sciences, Chinese Academy of Science, Shanghai, 200032, China.
- Department of Plant and Soil Sciences and Kentucky Tobacco Research and Development Center, University of Kentucky, Lexington, KY, 40546, USA.
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