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Su H, Jiao YT, Wang FF, Liu YE, Niu WL, Liu GT, Xu Y. Overexpression of VpPR10.1 by an efficient transformation method enhances downy mildew resistance in V. vinifera. PLANT CELL REPORTS 2018; 37:819-832. [PMID: 29511799 DOI: 10.1007/s00299-018-2271-z] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2018] [Accepted: 03/01/2018] [Indexed: 05/04/2023]
Abstract
Putrescine and spermidine increase the transformation efficiency of Vitis vinifera L. cv. Thompson seedless. Accumulation of VpPR10.1 in transgenic V. vinifera Thompson seedless, likely increases its resistance to downy mildew. A more efficient method is described for facilitating Agrobacterium-mediated transformation of Vitis vinifera L. cv. Thompson Seedless somatic embryogenesis using polyamines (PAs). The efficacies of putrescine, spermidine and spermine are identified at a range of concentrations (10 µM, 100 µM and 1 mM) added to the culture medium during somatic embryo growth. Putrescine (PUT) and spermidine (SPD) promote the recovery of proembryonic masses (PEM) and the development of somatic embryos (SE) after co-cultivation. Judging from the importance of the time-frame in genetic transformation, PAs added at the co-cultivation stage have a stronger effect than delayed selection treatments, which are superior to antibiotic treatments in the selection stage. Best embryogenic responses are with 1 mM PUT and 100 µM SPD added to the co-culture medium. Using the above method, a pathogenesis-related gene (VpPR10.1) from Chinese wild Vitis pseudoreticulata was transferred into Thompson Seedless for functional evaluation. The transgenic line, confirmed by western blot analysis, was inoculated with Plasmopara viticola to test for downy mildew resistance. Based on observed restrictions of hyphal growth and increases in H2O2 accumulation in the transgenic plants, the accumulation of VpPR10.1 likely enhanced the transgenic plants resistance to downy mildew.
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Affiliation(s)
- Hang Su
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Horticulture, Northwest A&F University, Yangling, Shaanxi, People's Republic of China
- Key Laboratory of Horticultural Plant Biology and Germplasm Innovation in Northwest China, Ministry of Agriculture, Yangling, Shaanxi, People's Republic of China
| | - Yun-Tong Jiao
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Horticulture, Northwest A&F University, Yangling, Shaanxi, People's Republic of China
- Key Laboratory of Horticultural Plant Biology and Germplasm Innovation in Northwest China, Ministry of Agriculture, Yangling, Shaanxi, People's Republic of China
| | - Fang-Fang Wang
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Horticulture, Northwest A&F University, Yangling, Shaanxi, People's Republic of China
- Key Laboratory of Horticultural Plant Biology and Germplasm Innovation in Northwest China, Ministry of Agriculture, Yangling, Shaanxi, People's Republic of China
| | - Yue-E Liu
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Horticulture, Northwest A&F University, Yangling, Shaanxi, People's Republic of China
- Key Laboratory of Horticultural Plant Biology and Germplasm Innovation in Northwest China, Ministry of Agriculture, Yangling, Shaanxi, People's Republic of China
| | - Wei-Li Niu
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Horticulture, Northwest A&F University, Yangling, Shaanxi, People's Republic of China
- Key Laboratory of Horticultural Plant Biology and Germplasm Innovation in Northwest China, Ministry of Agriculture, Yangling, Shaanxi, People's Republic of China
| | - Guo-Tian Liu
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Horticulture, Northwest A&F University, Yangling, Shaanxi, People's Republic of China.
- Key Laboratory of Horticultural Plant Biology and Germplasm Innovation in Northwest China, Ministry of Agriculture, Yangling, Shaanxi, People's Republic of China.
| | - Yan Xu
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Horticulture, Northwest A&F University, Yangling, Shaanxi, People's Republic of China.
- Key Laboratory of Horticultural Plant Biology and Germplasm Innovation in Northwest China, Ministry of Agriculture, Yangling, Shaanxi, People's Republic of China.
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Vale EM, Reis RS, Passamani LZ, Santa-Catarina C, Silveira V. Morphological analyses and variation in carbohydrate content during the maturation of somatic embryos of Carica papaya. PHYSIOLOGY AND MOLECULAR BIOLOGY OF PLANTS : AN INTERNATIONAL JOURNAL OF FUNCTIONAL PLANT BIOLOGY 2018. [PMID: 29515323 PMCID: PMC5834986 DOI: 10.1007/s12298-017-0501-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
Efficient protocols for somatic embryogenesis of papaya (Carica papaya L.) have great potential for selecting elite hybrid genotypes. Addition of polyethylene glycol (PEG), a nonplasmolyzing osmotic agent, to a maturation medium increases the production of somatic embryos in C. papaya. To study the effects of PEG on somatic embryogenesis of C. papaya, we analyzed somatic embryo development and carbohydrate profile changes during maturation treatments with PEG (6%) or without PEG (control). PEG treatment (6%) increased the number of normal mature somatic embryos followed by somatic plantlet production. In both control and PEG treatments, pro-embryogenic differentiation to the cotyledonary stage was observed and was significantly higher with PEG treatment. Histomorphological analysis of embryonic cultures with PEG revealed meristematic centers containing small isodiametric cells with dense cytoplasm and evident nuclei. Concomitant with the increase in the differentiation of somatic embryos in PEG cultures, there was an increase in the endogenous content of sucrose and starch, which appears to be related to a rising demand for energy, a key point in the conversion of C. papaya somatic embryos. The endogenous carbohydrate profile may be a valuable parameter for developing optimized protocols for the maturation of somatic embryos in papaya.
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Affiliation(s)
- Ellen Moura Vale
- Laboratório de Biotecnologia, Centro de Biociências e Biotecnologia (CBB), Universidade Estadual do Norte Fluminense Darcy Ribeiro (UENF), Av. Alberto Lamego 2000, Campos dos Goytacazes, RJ 28013-602 Brazil
- Unidade de Biologia Integrativa, Setor de Genômica e Proteômica, UENF, Av. Alberto Lamego 2000, Campos dos Goytacazes, RJ 28013-602 Brazil
| | - Ricardo Souza Reis
- Laboratório de Biotecnologia, Centro de Biociências e Biotecnologia (CBB), Universidade Estadual do Norte Fluminense Darcy Ribeiro (UENF), Av. Alberto Lamego 2000, Campos dos Goytacazes, RJ 28013-602 Brazil
- Unidade de Biologia Integrativa, Setor de Genômica e Proteômica, UENF, Av. Alberto Lamego 2000, Campos dos Goytacazes, RJ 28013-602 Brazil
| | - Lucas Zanchetta Passamani
- Laboratório de Biotecnologia, Centro de Biociências e Biotecnologia (CBB), Universidade Estadual do Norte Fluminense Darcy Ribeiro (UENF), Av. Alberto Lamego 2000, Campos dos Goytacazes, RJ 28013-602 Brazil
- Unidade de Biologia Integrativa, Setor de Genômica e Proteômica, UENF, Av. Alberto Lamego 2000, Campos dos Goytacazes, RJ 28013-602 Brazil
| | - Claudete Santa-Catarina
- Laboratório de Biologia Celular e Tecidual, CBB-UENF, Av. Alberto Lamego 2000, Campos dos Goytacazes, RJ 28013-602 Brazil
| | - Vanildo Silveira
- Laboratório de Biotecnologia, Centro de Biociências e Biotecnologia (CBB), Universidade Estadual do Norte Fluminense Darcy Ribeiro (UENF), Av. Alberto Lamego 2000, Campos dos Goytacazes, RJ 28013-602 Brazil
- Unidade de Biologia Integrativa, Setor de Genômica e Proteômica, UENF, Av. Alberto Lamego 2000, Campos dos Goytacazes, RJ 28013-602 Brazil
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Aslam J, Khan SA, Cheruth AJ, Mujib A, Sharma MP, Srivastava PS. Somatic embryogenesis, scanning electron microscopy, histology and biochemical analysis at different developing stages of embryogenesis in six date palm (Phoenix dactylifera L.) cultivars. Saudi J Biol Sci 2011; 18:369-80. [PMID: 23961149 PMCID: PMC3730799 DOI: 10.1016/j.sjbs.2011.06.002] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2011] [Revised: 05/31/2011] [Accepted: 06/15/2011] [Indexed: 11/18/2022] Open
Abstract
An efficient somatic embryogenesis system has been established in six date palm (Phoenix dactylifera L.) cultivars (Barhee, Zardai, Khalasah, Muzati, Shishi and Zart). Somatic embryogenesis (SE) was growth regulators and cultivars dependent. Friable embryogenic callus was induced from excised shoot tips on MS medium supplemented with various auxins particularly 2,4-dichlorophenoxyacetic acid (2,4-D, 1.5 mg 1(-l)). Suspension culture increased embryogenesis potentiality. Only a-naphthaleneacetic acid (NAA, 0.5 mg 1(-1)) produced somatic embryos in culture. Somatic embryos germinated and converted into plantlets in N(6)-benzyladenine (BAP, 0.75 mg 1(-l)) added medium following a treatment with thidiazuron (TDZ, 1.0 mg 1(-l)) for maturation. Scanning electron microscopy showed early stages of somatic embryo particularly, globular types, and was in masses. Different developing stages of embryogenesis (heart, torpedo and cotyledonary) were observed under histological preparation of embryogenic callus. Biochemical screening at various stages of somatic embryogenesis (embryogenic callus, somatic embryos, matured, germinated embryos and converted plantlets) of date palm cultivars has been conducted and discussed in detail. The result discussed in this paper indicates that somatic embryos were produced in numbers and converted plantlets can be used as a good source of alternative propagation. Genetic modification to the embryo precursor cell may improve the fruit quality and yield further.
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Key Words
- 2,4,5-T, 2,4,5-trichlorophenoxyacetic acid
- 2,4-D, 2,4-dichlorophenoxyacetic acid
- ANOVA, analysis of variance
- Amino acid
- Amino acids
- BA, N6-benzyladenine
- CPA, chlorophenoxyacetic acid
- Date palm cultivars
- Histological analysis
- IAA, indole-3-acetic acid
- MS, Murashige and Skoog’s (1962) medium
- NAA, a-naphthaleneacetic acid
- Protein
- SE, somatic embryogenesis
- Scanning electron microscopy
- Somatic embryogenesis
- Sugar
- TDZ, thidiazuron
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Affiliation(s)
- Junaid Aslam
- Dubai Pharmacy College, Al-Muhaisanah 1, Al Mizhar, P.O. Box 19099, Dubai, United Arab Emirates
- Department of Biotechnology, Jamia Hamdard (Hamdard University), New Delhi 110062, India
| | - Saeed Ahmad Khan
- Dubai Pharmacy College, Al-Muhaisanah 1, Al Mizhar, P.O. Box 19099, Dubai, United Arab Emirates
| | - Abdul Jaleel Cheruth
- Department of Aridland Agriculture, College of Food and Agriculture, UAE University, P.O. Box 17555, Al-Ain, United Arab Emirates
| | - Abdul Mujib
- Department of Botany, Jamia Hamdard (Hamdard University), New Delhi 110062, India
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