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Abdalla N, Dobránszki J. Meta-Topolin as an Effective Benzyladenine Derivative to Improve the Multiplication Rate and Quality of In Vitro Axillary Shoots of Húsvéti Rozmaring Apple Scion. PLANTS (BASEL, SWITZERLAND) 2024; 13:1568. [PMID: 38891376 PMCID: PMC11174652 DOI: 10.3390/plants13111568] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/08/2024] [Revised: 06/03/2024] [Accepted: 06/04/2024] [Indexed: 06/21/2024]
Abstract
In vitro mass propagation of apple plants plays an important role in the rapid multiplication of genetically uniform, disease-free scions and rootstocks with desired traits. Successful micropropagation of apple using axillary shoot cultures is influenced by several factors, the most critical of which is the cytokinin included in the culture medium. The impact of medium composition from single added cytokinins on shoot proliferation of apple scion Húsvéti rozmaring cultured on agar-agar gelled Murashige and Skoog medium fortified with indole butyric acid and gibberellic acid was investigated. The optimum concentration for efficient shoot multiplication differs according to the type of cytokinin. The highest significant multiplication rate (5.40 shoots/explant) was achieved using 2.0 μM thidiazuron while the longest shoots (1.80 cm) were observed on the medium containing benzyladenine at a concentration of 2.0 μM. However, application of either thidiazuron or benzyladenine as cytokinin source in the medium resulted in shoots of low quality, such as stunted and thickened shoots with small leaves. In the case of benzyladenine riboside, the 8 μM concentration was the most effective in increasing the multiplication rate (4.76 shoots/explant) but caused thickened stem development with tiny leaves. In the present study, meta-topolin was shown to be the most effective cytokinin that could be applied to induce sufficient multiplication (3.28 shoots/explant) and high-quality shoots along with shoot lengths of 1.46 cm when it was applied at concentrations of 4 μM. However, kinetin was the least active cytokinin; it practically did not induce the development of new shoots. The superior cytokinin for in vitro axillary shoot development of apple scion Húsvéti rozmaring with high-quality shoots was the meta-topolin, but it may be different depending on the variety/genotype under study.
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Affiliation(s)
- Neama Abdalla
- Plant Biotechnology Department, Biotechnology Research Institute, National Research Centre, 33 El Buhouth St., Dokki, Giza 12622, Egypt
- Centre for Agricultural Genomics and Biotechnology, Faculty of Agriculture and Food Sciences and Environmental Management, University of Debrecen, 4400 Nyíregyháza, Hungary
| | - Judit Dobránszki
- Centre for Agricultural Genomics and Biotechnology, Faculty of Agriculture and Food Sciences and Environmental Management, University of Debrecen, 4400 Nyíregyháza, Hungary
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Bettoni JC, Wang MR, Li JW, Fan X, Fazio G, Hurtado-Gonzales OP, Volk GM, Wang QC. Application of Biotechniques for In Vitro Virus and Viroid Elimination in Pome Fruit Crops. PHYTOPATHOLOGY 2024; 114:930-954. [PMID: 38408117 DOI: 10.1094/phyto-07-23-0232-kc] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/28/2024]
Abstract
Sustainable production of pome fruit crops is dependent upon having virus-free planting materials. The production and distribution of plants derived from virus- and viroid-negative sources is necessary not only to control pome fruit viral diseases but also for sustainable breeding activities, as well as the safe movement of plant materials across borders. With variable success rates, different in vitro-based techniques, including shoot tip culture, micrografting, thermotherapy, chemotherapy, and shoot tip cryotherapy, have been employed to eliminate viruses from pome fruits. Higher pathogen eradication efficiencies have been achieved by combining two or more of these techniques. An accurate diagnosis that confirms complete viral elimination is crucial for developing effective management strategies. In recent years, considerable efforts have resulted in new reliable and efficient virus detection methods. This comprehensive review documents the development and recent advances in biotechnological methods that produce healthy pome fruit plants. [Formula: see text] Copyright © 2024 The Author(s). This is an open access article distributed under the CC BY-NC-ND 4.0 International license.
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Affiliation(s)
- Jean Carlos Bettoni
- Independent Researcher, 35 Brasil Correia Street, Videira, SC 89560510, Brazil
| | - Min-Rui Wang
- Tropical Crops Genetic Resources Institute, Chinese Academy of Tropical Agricultural Sciences, Danzhou 571737, China
| | - Jing-Wei Li
- Institute of Vegetable Industry Technology Research, Guizhou University, Guiyang 550025, China
| | - Xudong Fan
- National Center for Eliminating Viruses from Deciduous Fruit Trees, Institute of Pomology of CAAS, Xingcheng 125100, China
| | - Gennaro Fazio
- U.S. Department of Agriculture-Agricultural Research Service Plant Genetic Resources Unit, Geneva, NY 14456, U.S.A
| | - Oscar P Hurtado-Gonzales
- U.S. Department of Agriculture-APHIS Plant Germplasm Quarantine Program, BARC-East, Beltsville, MD 20705, U.S.A
| | - Gayle M Volk
- U.S. Department of Agriculture-Agricultural Research Service National Laboratory for Genetic Resources Preservation, Fort Collins, CO 80521, U.S.A
| | - Qiao-Chun Wang
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Horticulture, Northwest A&F University, Yangling 712100, China
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Yang C, Sun N, Qin X, Liu Y, Sui M, Zhang Y, Hu Y, Mao Z, Chen X, Mao Y, Shen X. Multi-omics analysis reveals the biosynthesis of flavonoids during the browning process of Malus sieversii explants. PHYSIOLOGIA PLANTARUM 2024; 176:e14238. [PMID: 38488414 DOI: 10.1111/ppl.14238] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/03/2023] [Revised: 01/23/2024] [Accepted: 02/04/2024] [Indexed: 03/19/2024]
Abstract
Malus sieversii is a precious apple germplasm resource. Browning of explants is one of the most important factors limiting the survival rate of plant tissue culture. In order to explore the molecular mechanism of the browning degree of different strains of Malus sieversii, we compared the dynamic changes of Malus sieversii and Malus robusta Rehd. during the whole browning process using a multi-group method. A total of 44 048 differentially expressed genes (DEGs) were identified by transcriptome analysis on the DNBSEQ-T7 sequencing platform. KEGG enrichment analysis showed that the DEGs were significantly enriched in the flavonoid biosynthesis pathway. In addition, metabonomic analysis showed that (-)-epicatechin, astragalin, chrysin, irigenin, isoquercitrin, naringenin, neobavaisoflavone and prunin exhibited different degrees of free radical scavenging ability in the tissue culture browning process, and their accumulation in different varieties led to differences in the browning degree among varieties. Comprehensive transcriptome and metabonomics analysis of the data related to flavonoid biosynthesis showed that PAL, 4CL, F3H, CYP73A, CHS, CHI, ANS, DFR and PGT1 were the key genes for flavonoid accumulation during browning. In addition, WGCNA analysis revealed a strong correlation between the known flavonoid structure genes and the selected transcriptional genes. Protein interaction predictions demonstrated that 19 transcription factors (7 MYBs and 12 bHLHs) and 8 flavonoid structural genes had targeted relationships. The results show that the interspecific differential expression of flavonoid genes is the key influencing factor of the difference in browning degree between Malus sieversii and Malus robusta Rehd., providing a theoretical basis for further study on the regulation of flavonoid biosynthesis.
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Affiliation(s)
- Chen Yang
- College of Horticulture Science and Engineering, Shandong Agricultural University, China
| | - Nan Sun
- College of Horticulture, Hebei Agricultural University, Baoding, China
| | - Xin Qin
- College of Horticulture Science and Engineering, Shandong Agricultural University, China
| | - Yangbo Liu
- College of Horticulture Science and Engineering, Shandong Agricultural University, China
| | - Mengyi Sui
- College of Horticulture Science and Engineering, Shandong Agricultural University, China
| | - Yawen Zhang
- College of Horticulture Science and Engineering, Shandong Agricultural University, China
| | - Yanli Hu
- College of Horticulture Science and Engineering, Shandong Agricultural University, China
| | - Zhiquan Mao
- College of Horticulture Science and Engineering, Shandong Agricultural University, China
| | - Xuesen Chen
- College of Horticulture Science and Engineering, Shandong Agricultural University, China
| | - Yunfei Mao
- College of Horticulture Science and Engineering, Shandong Agricultural University, China
| | - Xiang Shen
- College of Horticulture Science and Engineering, Shandong Agricultural University, China
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Zhang R, Rao S, Wang Y, Qin Y, Qin K, Chen J. Chromosome Doubling Enhances Biomass and Carotenoid Content in Lycium chinense. PLANTS (BASEL, SWITZERLAND) 2024; 13:439. [PMID: 38337972 PMCID: PMC10857560 DOI: 10.3390/plants13030439] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2023] [Revised: 01/26/2024] [Accepted: 01/30/2024] [Indexed: 02/12/2024]
Abstract
Lycium chinense, a type of medicinal and edible plant, is rich in bioactive compounds beneficial to human health. In order to meet the market requirements for the yield and quality of L. chinense, polyploid induction is usually an effective way to increase plant biomass and improve the content of bioactive components. This study established the most effective tetraploid induction protocol by assessing various preculture durations, colchicine concentrations, and exposure times. The peak tetraploid induction efficacy, 18.2%, was achieved with a 12-day preculture and 24-h exposure to 50 mg L-1 colchicine. Compared to diploids, tetraploids exhibited potentially advantageous characteristics such as larger leaves, more robust stems, and faster growth rates. Physiologically, tetraploids demonstrated increased stomatal size and chloroplast count in stomata but reduced stomatal density. Nutrient analysis revealed a substantial increase in polysaccharides, calcium, iron, and zinc in tetraploid leaves. In addition, seventeen carotenoids were identified in the leaves of L. chinense. Compared to the diploid, lutein, β-carotene, neoxanthin, violaxanthin, and (E/Z)-phytoene exhibited higher levels in tetraploid strains T39 and T1, with T39 demonstrating a greater accumulation than T1. The findings suggest that the generated tetraploids harbor potential for further exploitation and lay the foundation for the selection and breeding of novel genetic resources of Lycium.
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Affiliation(s)
- Runan Zhang
- State Key Laboratory of Efficient Production of Forest Resources, National Engineering Research Center of Tree Breeding and Ecological Restoration, College of Biological Sciences and Technology, Beijing Forestry University, Beijing 100083, China; (R.Z.); (S.R.); (Y.W.); (Y.Q.)
| | - Shupei Rao
- State Key Laboratory of Efficient Production of Forest Resources, National Engineering Research Center of Tree Breeding and Ecological Restoration, College of Biological Sciences and Technology, Beijing Forestry University, Beijing 100083, China; (R.Z.); (S.R.); (Y.W.); (Y.Q.)
| | - Yuchang Wang
- State Key Laboratory of Efficient Production of Forest Resources, National Engineering Research Center of Tree Breeding and Ecological Restoration, College of Biological Sciences and Technology, Beijing Forestry University, Beijing 100083, China; (R.Z.); (S.R.); (Y.W.); (Y.Q.)
| | - Yingzhi Qin
- State Key Laboratory of Efficient Production of Forest Resources, National Engineering Research Center of Tree Breeding and Ecological Restoration, College of Biological Sciences and Technology, Beijing Forestry University, Beijing 100083, China; (R.Z.); (S.R.); (Y.W.); (Y.Q.)
| | - Ken Qin
- National Wolfberry Engineering Research Center, Ningxia Academy of Agriculture and Forestry Sciences, Yinchuan 750002, China;
| | - Jinhuan Chen
- State Key Laboratory of Efficient Production of Forest Resources, National Engineering Research Center of Tree Breeding and Ecological Restoration, College of Biological Sciences and Technology, Beijing Forestry University, Beijing 100083, China; (R.Z.); (S.R.); (Y.W.); (Y.Q.)
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Qiao S, Jin P, Liu X, Liang Y, Yang R, Bai W, Zhang D, Li X. Establishment of an Efficient and Rapid Regeneration System for a Rare Shrubby Desert Legume Eremosparton songoricum. PLANTS (BASEL, SWITZERLAND) 2023; 12:3535. [PMID: 37895998 PMCID: PMC10610040 DOI: 10.3390/plants12203535] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/30/2023] [Revised: 09/26/2023] [Accepted: 10/05/2023] [Indexed: 10/29/2023]
Abstract
Eremosparton songoricum (Litv.) Vass. is a rare and extremely drought-tolerant legume shrub that is distributed in Central Asia. E. songoricum naturally grows on bare sand and can tolerate multiple extreme environmental conditions. It is a valuable and important plant resource for desertification prevention and environmental protection, as well as a good material for the exploration of stress tolerance mechanisms and excellent tolerant gene mining. However, the regeneration system for E. songoricum has not yet been established, which markedly limits the conservation and utilization of this endangered and valuable desert legume. Assimilated branches derived from seedlings were cultured on several MS mediums supplemented with various concentrations of TDZ or 6-BA in different combinations with NAA. The results showed that the most efficient multiplication medium was MS medium supplemented with 0.4 mg/L 6-BA and 0.1 mg/L NAA. The most efficient rooting medium was WPM + 25 g/L sucrose. The highest survival rate (77.8%) of transplantation was achieved when the ratio of sand to vermiculite was 1:1. In addition, the optimal callus induction medium was MS + 30 g/L sucrose + 2 mg/L TDZ + 0.5 mg/L NAA in darkness. The E. songoricum callus treated with 100 mM NaCl and 300 mM mannitol on MS medium could be used in proper salt and drought stress treatments in subsequent gene function tests. A rapid and efficient regeneration system for E. songoricum that allowed regeneration within 3 months was developed. The protocol will contribute to the conservation and utilization of this rare and endangered desert stress-tolerant species and also provide a fundamental basis for gene functional analysis in E. songoricum.
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Affiliation(s)
- Siqi Qiao
- State Key Laboratory of Desert and Oasis Ecology, Key Laboratory of Ecological Safety and Sustainable Development in Arid Lands, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China; (S.Q.); (P.J.); (X.L.); (Y.L.); (R.Y.); (W.B.); (D.Z.)
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Pei Jin
- State Key Laboratory of Desert and Oasis Ecology, Key Laboratory of Ecological Safety and Sustainable Development in Arid Lands, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China; (S.Q.); (P.J.); (X.L.); (Y.L.); (R.Y.); (W.B.); (D.Z.)
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xiaojie Liu
- State Key Laboratory of Desert and Oasis Ecology, Key Laboratory of Ecological Safety and Sustainable Development in Arid Lands, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China; (S.Q.); (P.J.); (X.L.); (Y.L.); (R.Y.); (W.B.); (D.Z.)
- Turpan Eremophytes Botanical Garden, Chinese Academy of Sciences, Turpan 838008, China
| | - Yuqing Liang
- State Key Laboratory of Desert and Oasis Ecology, Key Laboratory of Ecological Safety and Sustainable Development in Arid Lands, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China; (S.Q.); (P.J.); (X.L.); (Y.L.); (R.Y.); (W.B.); (D.Z.)
- Turpan Eremophytes Botanical Garden, Chinese Academy of Sciences, Turpan 838008, China
| | - Ruirui Yang
- State Key Laboratory of Desert and Oasis Ecology, Key Laboratory of Ecological Safety and Sustainable Development in Arid Lands, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China; (S.Q.); (P.J.); (X.L.); (Y.L.); (R.Y.); (W.B.); (D.Z.)
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Wenwan Bai
- State Key Laboratory of Desert and Oasis Ecology, Key Laboratory of Ecological Safety and Sustainable Development in Arid Lands, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China; (S.Q.); (P.J.); (X.L.); (Y.L.); (R.Y.); (W.B.); (D.Z.)
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Daoyuan Zhang
- State Key Laboratory of Desert and Oasis Ecology, Key Laboratory of Ecological Safety and Sustainable Development in Arid Lands, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China; (S.Q.); (P.J.); (X.L.); (Y.L.); (R.Y.); (W.B.); (D.Z.)
- Turpan Eremophytes Botanical Garden, Chinese Academy of Sciences, Turpan 838008, China
| | - Xiaoshuang Li
- State Key Laboratory of Desert and Oasis Ecology, Key Laboratory of Ecological Safety and Sustainable Development in Arid Lands, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China; (S.Q.); (P.J.); (X.L.); (Y.L.); (R.Y.); (W.B.); (D.Z.)
- Turpan Eremophytes Botanical Garden, Chinese Academy of Sciences, Turpan 838008, China
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Xu C, Guo H, Wang Z, Chen Y. Development and comparative analysis of initiation ability in large-scale Heuchera propagation using tissue culture versus cuttings. Sci Rep 2023; 13:14785. [PMID: 37679496 PMCID: PMC10484989 DOI: 10.1038/s41598-023-42001-8] [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: 10/15/2022] [Accepted: 09/04/2023] [Indexed: 09/09/2023] Open
Abstract
The Heuchera genus, a member of the Saxifragaceae family, encompasses a wide array of varieties and hybrids, serving both traditional medicinal and ornamental purposes. However, a significant knowledge gap persists in achieving efficient mass propagation of diverse Heuchera cultivars creating a substantial market void. To address this, our study focuses on expedited seedling regeneration by investigating leaf cutting and tissue culture techniques to offer novel insights to cultivators. Herein, we successfully rooted thirteen distinct cultivars from the Heuchera and Heucherella (Heuchera × Tiarella) genera through cutting. Moreover, in vitro culture experiments led to the successful induction of calli and shoots from petiole samples. Notably, variations in measured parameters were observed across cultivars in both cutting and tissue culture methodologies. When petiole explants were exposed to cytokinin 6-benzylaminopurine (BA) at concentrations of 0.5, 1.0, and 2.0 mg/L along with auxin α-naphthaleneacetic acid (NAA) at 0.5 mg/L, shoots were produced either directly or indirectly during the primary culture. Exposure to darkness and the application of 2,4-dichlorophenoxyacetic acid (2,4-D) did not promote shoot formation but were beneficial for callus stimulation. Interestingly, a negative correlation was observed between the ease of initiating cutting recovery and inducting tissue culture regeneration, suggesting that cultivars that easily regenerate through cutting might encounter difficulties during induction by tissue culture. In light of these findings, we devised a streamlined and effective protocol for rapid Heuchera propagation. This protocol involves micropropagation, directly acquiring adventitious shoots from primary cultures supplemented by cutting-based propagation methods.
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Affiliation(s)
- Chan Xu
- Institute of Vegetables and Flowers, Chongqing Academy of Agricultural Sciences, Chongqing, 400000, China
| | - Hang Guo
- Institute of Vegetables and Flowers, Chongqing Academy of Agricultural Sciences, Chongqing, 400000, China
| | - Zhijing Wang
- Institute of Vegetables and Flowers, Chongqing Academy of Agricultural Sciences, Chongqing, 400000, China
| | - Yuan Chen
- Institute of Vegetables and Flowers, Chongqing Academy of Agricultural Sciences, Chongqing, 400000, China.
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Comparisons between Plant and Animal Stem Cells Regarding Regeneration Potential and Application. Int J Mol Sci 2023; 24:ijms24054392. [PMID: 36901821 PMCID: PMC10002278 DOI: 10.3390/ijms24054392] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Revised: 02/16/2023] [Accepted: 02/21/2023] [Indexed: 02/25/2023] Open
Abstract
Regeneration refers to the process by which organisms repair and replace lost tissues and organs. Regeneration is widespread in plants and animals; however, the regeneration capabilities of different species vary greatly. Stem cells form the basis for animal and plant regeneration. The essential developmental processes of animals and plants involve totipotent stem cells (fertilized eggs), which develop into pluripotent stem cells and unipotent stem cells. Stem cells and their metabolites are widely used in agriculture, animal husbandry, environmental protection, and regenerative medicine. In this review, we discuss the similarities and differences in animal and plant tissue regeneration, as well as the signaling pathways and key genes involved in the regulation of regeneration, to provide ideas for practical applications in agriculture and human organ regeneration and to expand the application of regeneration technology in the future.
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Dang S, Gao R, Zhang Y, Feng Y. In vitro regeneration and its histological characteristics of Dioscorea nipponica Makino. Sci Rep 2022; 12:18436. [PMID: 36319819 PMCID: PMC9626472 DOI: 10.1038/s41598-022-22986-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2022] [Accepted: 10/21/2022] [Indexed: 11/10/2022] Open
Abstract
Dioscorea nipponica Makino is an optimal candidate to develop the diosgenin industry in North China. Due to its increasing demand in the medicine industry, it is urgent to apply new biotechnological tools to foster breeds with desirable traits and enhanced secondary metabolite production. The production of useful metabolites by the in vitro cultured rhizomes can be explored successfully for utilization by various food and drug industries. In this study, we reported callus formation and plantlet regeneration of the medicinal plant D. nipponica. Explants of leaves, stem segments and rhizomes of aseptic seedlings were cultured on Murashige and Skoog (MS) medium containing various combinations of auxin and cytokinin to find the optimal PGRs of each type of explant for callus induction and shoot regeneration of D. nipponica. The paraffin section technique was also used to observe of the morphogenesis of callus and adventitious bud. Explants of seeds and rhizomes formed calli at high frequency in all lines we examined. However, the explant of leaves rarely formed callus. Three kinds of callus were detected during the induction phase. Here, we describe three types of callus (Callus I-III) with different structure characteristics. Greenish in color and a nodule-like protrusion surface (Callus type III) were arranged more closely of cells with less interstitial substance, cell differentiation ability stronger than other callus types. The optimum combination was the maximum shoot differentiation frequency of 90% in callus derived from seeds cultured on MS medium with 2.0 mg L-16-BA + 0.2 mg L-1NAA. The shoot differentiation frequency (88.57%) of rhizome-induced callus was obtained by the combination of MS medium supplemented with 3.0 mg L-16-BA + 2.0 mg L-1NAA. 1/2 MS medium plus 0.5 mg L-1NAA resulted in a higher root regeneration frequency of 86.70%. In vitro propagated plantlets with healthy roots were domesticated and transplanted into small plastic pots containing sterile soil rite under greenhouse conditions with 80% survivability. Bud differentiation is mostly of exogenous origin, mostly occurring on the near callus surface. Therefore, it may be surmised that in vitro morphogenesis of D. nipponica is mainly caused by indirect organogenesis (adventitious bud).
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Affiliation(s)
- Shangni Dang
- grid.412545.30000 0004 1798 1300College of Forestry, Shanxi Agricultural University, Taigu, Shanxi China
| | - Runmei Gao
- grid.412545.30000 0004 1798 1300College of Forestry, Shanxi Agricultural University, Taigu, Shanxi China
| | - Yuqing Zhang
- grid.412545.30000 0004 1798 1300College of Forestry, Shanxi Agricultural University, Taigu, Shanxi China
| | - Yumei Feng
- grid.412545.30000 0004 1798 1300College of Forestry, Shanxi Agricultural University, Taigu, Shanxi China
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Development of a Highly Efficient Shoot Organogenesis System for an Ornamental Aeschynanthus pulcher (Blume) G. Don Using Leaves as Explants. PLANTS 2022; 11:plants11192456. [PMID: 36235322 PMCID: PMC9570966 DOI: 10.3390/plants11192456] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/28/2022] [Revised: 09/16/2022] [Accepted: 09/16/2022] [Indexed: 11/16/2022]
Abstract
Aeschynanthus pulcher (Blume) G. Don, the “lipstick plant” is a prized ornamental plant with distinctive flowers. Here, we introduce a novel in vitro regeneration method for A. pulcher using leaf explants and an optimized combination of phytohormone plant growth regulators (PGRs). The optimal conditions for shoot regeneration included 1 mg L−1 polyvinyl pyrrolidone (PVP) plus 3 mg L−1 thidiazuron (TDZ), inducing a response rate of 82.4% and a shoot/explant ratio of 38.6. When the Murashige and Skoog (MS) medium contained indole-3-butyric acid (IBA) alone, leaves first differentiated into adventitious roots and then adventitious shoots. Leaves cultured on MS medium containing 1 g L−1 PVP, 3 mg L−1 TDZ, 5 mg L−1 casein, and 0.1 mg L−1 α-naphthaleneacetic acid (NAA) for 30 d exhibited the highest embryogenic callus (EC) induction rate (95.6%). The optimal shoot proliferation coefficient (21.5) was obtained when shoots derived from EC were cultured on the same medium as that used for EC induction for 5 weeks. The most effective medium for rooting of elongated shoots was MS medium containing 1 g L−1 PVP, 5 mg L−1 casein, 3 mg L−1 6-benzyladenine (BA), and 0.1 mg L−1 NAA, and the number of roots reached 18.8. The regenerated plants grown in a greenhouse had 100% survival following one week of hardening. Overall, our effective and efficient propagation method should result in shortened culture periods and reduced production costs, allowing for the future selective breeding and genetic improvement of A. pulcher.
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Zhang H, Guo M, Wu Q, Zhao M, Li R, Deng X, Xi R. Efficient regeneration of mature castanopsis hystrix from in vitro stem explants. FRONTIERS IN PLANT SCIENCE 2022; 13:914652. [PMID: 36035695 PMCID: PMC9412185 DOI: 10.3389/fpls.2022.914652] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/07/2022] [Accepted: 07/18/2022] [Indexed: 06/15/2023]
Abstract
Castanopsis hystrix is one of the main timber trees grown in China. However, severe shortage of natural seeds and the difficulty of explant regeneration has limited seedling supply. As such, there is a need for research on asexual multiplication of C. hystrix. This study established a rapid propagation technology system for C. hystrix genotypes, including explant treatment, proliferation, and rooting. HZ (a modified MS medium) supplemented with 4.4 μM BA and 0.5 μM IBA was found to be the optimal medium for shoot sprouting. The maximum proliferation coefficient and the number of effective shoots was obtained on HZ medium supplemented with 2.6 μM BA and 1.0 μM IBA, were 3.00 and 5.63, respectively. A rooting rate of 83.33% was achieved using half-strength HZ medium supplemented with 3.2 μM NAA. Adding vitamin C (80 mg⋅l-1) for 7 days in a dark environment reduced the browning rate, while increasing the proliferation rate. Additionally, through cytological observation, we established how and where adventitious roots occur. The survival rate of transplanted plantlets was > 90%. This is the first report of an in vitro regeneration technique that uses stem segments of mature C. hystrix as explants.
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Affiliation(s)
- Heng Zhang
- Guangdong Key Laboratory for Innovative Development and Utilization of Forest Plant Germplasm, Guangzhou, China
- College of Forestry and Landscape Architecture, South China Agricultural University, Guangzhou, China
| | - Mengqing Guo
- Guangdong Key Laboratory for Innovative Development and Utilization of Forest Plant Germplasm, Guangzhou, China
- College of Forestry and Landscape Architecture, South China Agricultural University, Guangzhou, China
| | - Qiaona Wu
- Guangdong Key Laboratory for Innovative Development and Utilization of Forest Plant Germplasm, Guangzhou, China
- College of Forestry and Landscape Architecture, South China Agricultural University, Guangzhou, China
| | - Mengqiu Zhao
- Guangdong Key Laboratory for Innovative Development and Utilization of Forest Plant Germplasm, Guangzhou, China
- College of Forestry and Landscape Architecture, South China Agricultural University, Guangzhou, China
| | - Ruiping Li
- Guangdong Key Laboratory for Innovative Development and Utilization of Forest Plant Germplasm, Guangzhou, China
- College of Forestry and Landscape Architecture, South China Agricultural University, Guangzhou, China
| | - Xiaomei Deng
- Guangdong Key Laboratory for Innovative Development and Utilization of Forest Plant Germplasm, Guangzhou, China
- College of Forestry and Landscape Architecture, South China Agricultural University, Guangzhou, China
| | - Ruchun Xi
- Guangdong Key Laboratory for Innovative Development and Utilization of Forest Plant Germplasm, Guangzhou, China
- College of Forestry and Landscape Architecture, South China Agricultural University, Guangzhou, China
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Yao SC, Jiang YY, Ni S, Wang L, Feng J, Yang RW, Yang LX, Len QY, Zhang L. Development of a highly efficient virus-free regeneration system of Salvia miltiorrhiza from Sichuan using apical meristem as explants. PLANT METHODS 2022; 18:50. [PMID: 35436933 PMCID: PMC9014595 DOI: 10.1186/s13007-022-00872-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/23/2021] [Accepted: 03/10/2022] [Indexed: 06/14/2023]
Abstract
BCAKGROUND The dry root and rhizome of Salvia miltiorrhiza are used to treat cardiovascular diseases, chronic pain, and thoracic obstruction over 2000 years in Asian countries. For high quality, Sichuan Zhongjiang is regarded as the genuine producing area of S. miltiorrhiza. Given its abnormal pollen development, S. miltiorrhiza from Sichuan (S.m.-SC) relies on root reproduction and zymad accumulation; part of diseased plants present typical viral disease symptoms and seed quality degeneration. This study aim to detected unknown viruses from mosaic-diseased plants and establish a highly efficient virus-free regeneration system to recover germplasm properties. RESULTS Tobacco mosaic virus (TMV) and cucumber mosaic virus (CMV) were detected from mosaic-diseased plants. Primary apical meristem with two phyllo podium in 0.15-0.5 mm peeled from diseased plants were achieved 73.33% virus-free rate. The results showed that the medium containing MS, 0.5 mg/L 6-BA, 0.1 mg/L NAA, 0.1 mg/L GA3, 30 g/L sucrose and 7.5 g/L agar can achieve embryonic-tissue (apical meristem, petiole and leaf callus) high efficient organogenesis. For callus induction, the optimal condition was detected on the medium containing MS, 2 mg/L TDZ, 0.1 mg/L NAA by using secondary petiole of virus-free plants under 24 h dark/d condition for 21 d. The optimal system for root induction was the nutrient solution with 1/2 MS supplemented with 1 mg/L NAA. After transplant, the detection of agronomic metric and salvianolic acid B content confirmed the great germplasm properties of S.m.-SC virus-free plants. CONCLUSIONS A highly efficient virus-free regeneration system of S.m.-SC was established based on the detected viruses to recover superior seed quality. The proposed system laid support to control disease spread, recover good germplasm properties in S.m.-SC.
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Affiliation(s)
- Si Cheng Yao
- College of Science, Sichuan Agricultural University, Ya'an, 625000, China
- Featured Medicinal Plants Sharing and Service Plantform of Sichuan Province, Ya'an, 625000, China
| | - Yuan Yuan Jiang
- College of Science, Sichuan Agricultural University, Ya'an, 625000, China
- Featured Medicinal Plants Sharing and Service Plantform of Sichuan Province, Ya'an, 625000, China
| | - Su Ni
- Featured Medicinal Plants Sharing and Service Plantform of Sichuan Province, Ya'an, 625000, China
- College of Agriculture, Sichuan Agricultural University, Chengdu, 610000, China
| | - Long Wang
- Featured Medicinal Plants Sharing and Service Plantform of Sichuan Province, Ya'an, 625000, China
| | - Jun Feng
- College of Science, Sichuan Agricultural University, Ya'an, 625000, China
- Featured Medicinal Plants Sharing and Service Plantform of Sichuan Province, Ya'an, 625000, China
| | - Rui Wu Yang
- Featured Medicinal Plants Sharing and Service Plantform of Sichuan Province, Ya'an, 625000, China
| | - Li Xia Yang
- College of Science, Sichuan Agricultural University, Ya'an, 625000, China
- Featured Medicinal Plants Sharing and Service Plantform of Sichuan Province, Ya'an, 625000, China
| | - Qiu Yan Len
- College of Science, Sichuan Agricultural University, Ya'an, 625000, China
- Featured Medicinal Plants Sharing and Service Plantform of Sichuan Province, Ya'an, 625000, China
| | - Li Zhang
- College of Science, Sichuan Agricultural University, Ya'an, 625000, China.
- Featured Medicinal Plants Sharing and Service Plantform of Sichuan Province, Ya'an, 625000, China.
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12
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Trunjaruen A, Luecha P, Taratima W. Micropropagation of pokeweed ( Phytolacca americana L.) and comparison of phenolic, flavonoid content, and antioxidant activity between pokeweed callus and other parts. PeerJ 2022; 10:e12892. [PMID: 35186483 PMCID: PMC8830332 DOI: 10.7717/peerj.12892] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2021] [Accepted: 01/16/2022] [Indexed: 01/11/2023] Open
Abstract
BACKGROUND Pokeweed (Phytolacca americana L.) is regarded as an invasive plant in many parts of the world but possesses therapeutic characteristics used for antitumor and rheumatism treatment. This study investigated the effects of auxins and four explants on pokeweed callus induction. The effects of cytokinins and combinations between cytokinins and NAA on shoot and root induction were also studied. TPC, TFC and antioxidant activity of calli were screened and compared with other pokeweed plant parts. METHODS Four explants were used to induce callus using 2,4-D and IBA at 1, 2, 3 and 4 mg/l for each auxin. Direct shoot organogenesis from nodal explants was investigated using BAP, kinetin and TDZ (1, 2 and 4 mg/l for each cytokinin). Combined effects between cytokinins and NAA at 0.1, 0.2 and 0.3 mg/l were further simultaneously estimated with root induction. Calli derived from the leaves were compared with other plant parts for TPC, TFC and antioxidant activity using the Folin-Ciocalteu, AlCl3 colorimetric assay and DPPH assays, respectively. RESULTS Results showed that MS medium containing 2 mg/l 2,4-D induced callus formation on leaf explants that provided highest fresh and dry weights. Three types of synthetic cytokinins as kinetin, TDZ and BAP were used for direct shoot organogenesis from pokeweed nodes. MS medium containing 2 mg/l kinetin was effective in stimulating normal shoots, with the largest number of shoots and leaves and the longest shoots. The combination between cytokinins and NAA showed no positive effect on shoot and root induction from pokeweed nodal explants. For TPC and TFC determination, pokeweed seeds and leaves possessed the highest phenolic and flavonoid contents, respectively. Highest phenolic content of pokeweed seeds led to lowest IC50 by DPPH assay. Phenolic content was higher than flavonoid content. CONCLUSION Results suggested promising conditions for callus induction. Leaf explants cultured on MS medium with 2 mg/l 2,4-D and nodal explants cultured on MS medium with 2 mg/l kinetin provided the largest number of normal shoots and leaves. NAA did not show positive effects on shoot and root induction when combined with cytokinins. Chemical constituent screening indicated that seeds and leaves provided highest TPC and TFC, respectively, while pokeweed calli contained higher phenolic than flavonoid content. This is the first report describing chemical constituent screening and antioxidant activity of calli and other parts of the pokeweed plant. Results provided significant information to further enhance bioactive compound contents of pokeweed calli using elicitation methods.
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Affiliation(s)
- Attachai Trunjaruen
- Salt-Tolerant Rice Research Group, Department of Biology, Faculty of Science, Khon Kaen University, Khon Kaen, Thailand
| | - Prathan Luecha
- Department of Pharmacognosy and Toxicology, Faculty of Pharmaceutical Science, Khon Kaen University, Khon Kaen, Thailand
| | - Worasitikulya Taratima
- Salt-Tolerant Rice Research Group, Department of Biology, Faculty of Science, Khon Kaen University, Khon Kaen, Thailand
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Sriskanda D, Liew YX, Khor SP, Merican F, Subramaniam S, Chew BL. An efficient micropropagation protocol for Ficus carica cv. Golden Orphan suitable for mass propagation. BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2021. [DOI: 10.1016/j.bcab.2021.102225] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Zhang Y, Zhou P, Bozorov TA, Zhang D. Application of CRISPR/Cas9 technology in wild apple (Malus sieverii) for paired sites gene editing. PLANT METHODS 2021; 17:79. [PMID: 34281579 PMCID: PMC8287690 DOI: 10.1186/s13007-021-00769-8] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2021] [Accepted: 06/14/2021] [Indexed: 05/08/2023]
Abstract
BACKGROUND Xinjiang wild apple is an important tree of the Tianshan Mountains, and in recent years, it has undergone destruction by many biotic and abiotic stress and human activities. It is necessary to use new technologies to research its genomic function and molecular improvement. The clustered regulatory interspaced short palindromic repeats (CRISPR)/CRISPR-associated protein (Cas) system has been successfully applied to genetic improvement in many crops, but its editing capability varies depending on the different combinations of the synthetic guide RNA (sgRNA) and Cas9 protein expression devices. RESULTS In this study, we used 2 systems of vectors with paired sgRNAs targeting to MsPDS. As expected, we successfully induced the albino phenotype of calli and buds in both systems. CONCLUSIONS We conclude that CRISPR/Cas9 is a powerful system for editing the wild apple genome and expands the range of plants available for gene editing.
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Affiliation(s)
- Yan Zhang
- State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi, 830011, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Ping Zhou
- State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi, 830011, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Tohir A Bozorov
- State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi, 830011, China
| | - Daoyuan Zhang
- State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi, 830011, China.
- Xinjiang Key Laboratory of Stress Resistant Plant Conservation and Research, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi, 830011, China.
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