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Chen F, Zeng Y, Cheng Q, Xiao L, Ji J, Hou X, Huang Q, Lei Z. Tissue culture and Agrobacterium-mediated genetic transformation of the oil crop sunflower. PLoS One 2024; 19:e0298299. [PMID: 38722945 PMCID: PMC11081250 DOI: 10.1371/journal.pone.0298299] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2023] [Accepted: 04/03/2024] [Indexed: 05/13/2024] Open
Abstract
Sunflower is one of the four major oil crops in the world. 'Zaoaidatou' (ZADT), the main variety of oil sunflower in the northwest of China, has a short growth cycle, high yield, and high resistance to abiotic stress. However, the ability to tolerate adervesity is limited. Therefore, in this study, we used the retention line of backbone parent ZADT as material to establish its tissue culture and genetic transformation system for new variety cultivating to enhance resistance and yields by molecular breeding. The combination of 0.05 mg/L IAA and 2 mg/L KT in MS was more suitable for direct induction of adventitious buds with cotyledon nodes and the addition of 0.9 mg/L IBA to MS was for adventitious rooting. On this basis, an efficient Agrobacterium tumefaciens-mediated genetic transformation system for ZADT was developed by the screening of kanamycin and optimization of transformation conditions. The rate of positive seedlings reached 8.0%, as determined by polymerase chain reaction (PCR), under the condition of 45 mg/L kanamycin, bacterial density of OD600 0.8, infection time of 30 min, and co-cultivation of three days. These efficient regeneration and genetic transformation platforms are very useful for accelerating the molecular breeding process on sunflower.
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Affiliation(s)
- Fangyuan Chen
- Xinjiang Key Laboratory of Biological Resources and Genetic Engineering, College of Life Science and Technology, Xinjiang University, Urumqi, XinJiang, China
- Key Laboratory of Microbial Resources Protection, Development and Utilization, College of Biological Sciences and Technology, Yili Normal University, Yining, XinJiang, China
| | - Youling Zeng
- Xinjiang Key Laboratory of Biological Resources and Genetic Engineering, College of Life Science and Technology, Xinjiang University, Urumqi, XinJiang, China
| | - Quan Cheng
- Xinjiang Key Laboratory of Biological Resources and Genetic Engineering, College of Life Science and Technology, Xinjiang University, Urumqi, XinJiang, China
| | - Lvting Xiao
- Xinjiang Key Laboratory of Biological Resources and Genetic Engineering, College of Life Science and Technology, Xinjiang University, Urumqi, XinJiang, China
| | - Jieyun Ji
- Xinjiang Key Laboratory of Biological Resources and Genetic Engineering, College of Life Science and Technology, Xinjiang University, Urumqi, XinJiang, China
| | - Xianfei Hou
- Institute of Economic Crops, Xinjiang Academy of Agricultural Sciences, Urumqi, XinJiang, China
| | - Qixiu Huang
- Institute of Economic Crops, Xinjiang Academy of Agricultural Sciences, Urumqi, XinJiang, China
| | - Zhonghua Lei
- Institute of Economic Crops, Xinjiang Academy of Agricultural Sciences, Urumqi, XinJiang, China
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Ke L, Yu D, Zheng H, Xu Y, Wu Y, Jiao J, Wang X, Mei J, Cai F, Zhao Y, Sun J, Zhang X, Sun Y. Function deficiency of GhOMT1 causes anthocyanidins over-accumulation and diversifies fibre colours in cotton (Gossypium hirsutum). PLANT BIOTECHNOLOGY JOURNAL 2022; 20:1546-1560. [PMID: 35503731 PMCID: PMC9342615 DOI: 10.1111/pbi.13832] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/09/2022] [Accepted: 04/23/2022] [Indexed: 05/25/2023]
Abstract
Naturally coloured cotton (NCC) fibres need little or no dyeing process in textile industry to low-carbon emission and are environment-friendly. Proanthocyanidins (PAs) and their derivatives were considered as the main components causing fibre coloration and made NCCs very popular and healthy, but the monotonous fibre colours greatly limit the wide application of NCCs. Here a G. hirsutum empurpled mutant (HS2) caused by T-DNA insertion is found to enhance the anthocyanidins biosynthesis and accumulate anthocyanidins in the whole plant. HPLC and LC/MS-ESI analysis confirmed the anthocyanidins methylation and peonidin, petunidin and malvidin formation are blocked. The deficiency of GhOMT1 in HS2 was associated with the activation of the anthocyanidin biosynthesis and the altered components of anthocyanidins. The transcripts of key genes in anthocyanidin biosynthesis pathway are significantly up-regulated in HS2, while transcripts of the genes for transport and decoration were at similar levels as in WT. To investigate the potential mechanism of GhOMT1 deficiency in cotton fibre coloration, HS2 mutant was crossed with NCCs. Surprisingly, offsprings of HS2 and NCCs enhanced PAs biosynthesis and increased PAs levels in their fibres from the accumulated anthocyanidins through up-regulated GhANR and GhLAR. As expected, multiple novel lines with improved fibre colours including orange red and navy blue were produced in their generations. Based on this work, a new strategy for breeding diversified NCCs was brought out by promoting PA biosynthesis. This work will help shed light on mechanisms of PA biosynthesis and bring out potential molecular breeding strategy to increase PA levels in NCCs.
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Affiliation(s)
- Liping Ke
- Plant Genomics & Molecular Improvement of Colored Fiber LaboratoryCollege of Life Sciences and MedicineZhejiang Sci‐Tech UniversityHangzhouChina
| | - Dongliang Yu
- Plant Genomics & Molecular Improvement of Colored Fiber LaboratoryCollege of Life Sciences and MedicineZhejiang Sci‐Tech UniversityHangzhouChina
| | - Hongli Zheng
- Plant Genomics & Molecular Improvement of Colored Fiber LaboratoryCollege of Life Sciences and MedicineZhejiang Sci‐Tech UniversityHangzhouChina
| | - Yihan Xu
- Plant Genomics & Molecular Improvement of Colored Fiber LaboratoryCollege of Life Sciences and MedicineZhejiang Sci‐Tech UniversityHangzhouChina
| | - Yuqing Wu
- Plant Genomics & Molecular Improvement of Colored Fiber LaboratoryCollege of Life Sciences and MedicineZhejiang Sci‐Tech UniversityHangzhouChina
| | - Junye Jiao
- Plant Genomics & Molecular Improvement of Colored Fiber LaboratoryCollege of Life Sciences and MedicineZhejiang Sci‐Tech UniversityHangzhouChina
| | - Xiaoli Wang
- Plant Genomics & Molecular Improvement of Colored Fiber LaboratoryCollege of Life Sciences and MedicineZhejiang Sci‐Tech UniversityHangzhouChina
| | - Jun Mei
- Plant Genomics & Molecular Improvement of Colored Fiber LaboratoryCollege of Life Sciences and MedicineZhejiang Sci‐Tech UniversityHangzhouChina
| | - Fangfang Cai
- Plant Genomics & Molecular Improvement of Colored Fiber LaboratoryCollege of Life Sciences and MedicineZhejiang Sci‐Tech UniversityHangzhouChina
| | - Yanyan Zhao
- Plant Genomics & Molecular Improvement of Colored Fiber LaboratoryCollege of Life Sciences and MedicineZhejiang Sci‐Tech UniversityHangzhouChina
| | - Jie Sun
- College of AgricultureThe Key Laboratory of Oasis Eco‐AgricultureShihezi UniversityShiheziChina
| | - Xianlong Zhang
- National Key Laboratory of Crop Genetic ImprovementHuazhong Agricultural UniversityWuhanChina
| | - Yuqiang Sun
- Plant Genomics & Molecular Improvement of Colored Fiber LaboratoryCollege of Life Sciences and MedicineZhejiang Sci‐Tech UniversityHangzhouChina
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Heterologous expression of cry3Bb1 and cry3 genes for enhanced resistance against insect pests in cotton. Sci Rep 2022; 12:10878. [PMID: 35760806 PMCID: PMC9237104 DOI: 10.1038/s41598-022-13295-x] [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: 03/20/2022] [Accepted: 05/23/2022] [Indexed: 11/10/2022] Open
Abstract
Transgenic technology played a crucial role in developing insect-resistant plants resulting in the reduced application of pesticides. This article reports the expression of two cry proteins (Cry3Bb1 and Cry3) in cotton for enhanced resistance against chewing insect pests. The aforementioned genes were synthetically developed and were cloned under appropriate regulatory sequences followed by transformation into Eagle-2 genotype (Gossypium hirsutum) of cotton through shoot apex-cut Agro-infiltration. The transgene integration was validated by polymerase chain reaction using primers flanking the aforementioned cry genes. Transgene expression was assessed by qRT-PCR using GADPH as a reference gene. The relative fold expression analyses revealed the highest expression of the transgene(s) in M1 plants, which is a 4.5-fold expression (Cry3 + Cry3Bb1) followed by M3 (fold expression, 3.0) (Cry3Bb1) and M2 (fold expression, 2.5) (Cry3) transformants of cotton. The confirmed transgenic plants were exposed to insect pests, pink bollworm (Pectinophora gossypiella), and army bollworm (Helicoverpa armigera). Bioassay results revealed that 60% mortality was observed against pink bollworm, and 75% mortality was observed against army bollworm in transgenic plants containing both Cry3Bb1 and Cry3 genes (M1 transgenic plants). In M2 transgenic plants containing only the Cry3Bb1 gene, the mortality was observed to be 40% in the pink bollworm population, whereas 45% mortality was observed in the army bollworm population. In the case of M3 transgenic plants containing single gene-Cry3, the mortality was 20% in the pink bollworm population, whereas 30% mortality was observed in the army bollworm population. Almost no mortality was observed in non-transgenic Eagle-2 control plants. Hence, the developed cotton transformants have improved resistance against chewing insect pests.
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Salvador R, Maskin L, Niz J, Turica M, Pedarros A, Hopp E, Lewi D. RNAi Expression in Cotton for Control of Herbivorous Insects. METHODS IN MOLECULAR BIOLOGY (CLIFTON, N.J.) 2021; 2360:217-233. [PMID: 34495518 DOI: 10.1007/978-1-0716-1633-8_17] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Cultivated cotton (Gossypium hirsutum) is heavily attacked by various species of insects worldwide and breeding of new varieties resistant to pests is still a hard battle to win. RNAi technology is an important reverse genetics tool to induce gene silencing in eukaryotic organisms and produce phenotypic modifications. In cotton, RNAi was applied to investigate gene function and enhance resistance to insects and pathogens. Different methods and techniques can be used to synthetize double stranded RNA (dsRNA) into plant cells. The Agrobacterium-mediated transformation is a common method to introduce RNAi binary plasmids into cotton genome and obtain stable transgenics plants. This methodology includes the coculture of cotton tissues with Agrobacterium cultures, selection of transgenic cells and induction of somatic embryogenesis to finally obtain transgenic plants after a relatively long period of time. The transient synthesis of dsRNA mediated by virus-induced gene silencing (VIGS) in cotton is an alternative to anticipate the silencing effect of a specific RNA sequence, prior to the development of a stable transgenic plant. VIGS vectors are incorporated into the plant by agroinfiltration technique. During VIGS replication inside plant cells, synthetized dsRNA allows the study on specific heterologous gene expression including the phenotypic effect on herbivorous target pests, thus facilitating a rapid evaluation of dsRNA expressed in cotton plants against individual insect target genes. Here we describe the complementation of these two techniques to evaluate RNAi-based cotton plant protection against insect pests.
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Affiliation(s)
- Ricardo Salvador
- Instituto de Microbiología y Zoología Agrícola (IMYZA-CICVyA), INTA, Hurlingham, Provincia de Buenos Aires, Argentina.
| | - Laura Maskin
- Instituto de Genética (IGEAF-CICVyA), INTA, Hurlingham, Provincia de Buenos Aires, Argentina
| | - José Niz
- Instituto de Microbiología y Zoología Agrícola (IMYZA-CICVyA), INTA, Hurlingham, Provincia de Buenos Aires, Argentina
| | - Mariana Turica
- Instituto de Genética (IGEAF-CICVyA), INTA, Hurlingham, Provincia de Buenos Aires, Argentina
| | - Analía Pedarros
- Instituto de Microbiología y Zoología Agrícola (IMYZA-CICVyA), INTA, Hurlingham, Provincia de Buenos Aires, Argentina
| | - Esteban Hopp
- IABIMO-Instituto de Biotecnología (IB-CICVyA), INTA-CONICET, Hurlingham, Provincia de Buenos Aires, Argentina.,Laboratorio de Agrobiotecnología, DFBMC, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Dalia Lewi
- Instituto de Genética (IGEAF-CICVyA), INTA, Hurlingham, Provincia de Buenos Aires, Argentina
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