1
|
Súnico V, Higuera JJ, Amil-Ruiz F, Arjona-Girona I, López-Herrera CJ, Muñoz-Blanco J, Maldonado-Alconada AM, Caballero JL. FaNPR3 Members of the NPR1-like Gene Family Negatively Modulate Strawberry Fruit Resistance against Colletotrichum acutatum. PLANTS (BASEL, SWITZERLAND) 2024; 13:2261. [PMID: 39204697 PMCID: PMC11360474 DOI: 10.3390/plants13162261] [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: 07/17/2024] [Revised: 08/08/2024] [Accepted: 08/09/2024] [Indexed: 09/04/2024]
Abstract
Strawberry fruit is highly appreciated worldwide for its organoleptic and healthy properties. However, this plant is attacked by many pathogenic fungi, which significantly affect fruit production and quality at pre- and post-harvest stages, making chemical applications the most effective but undesirable strategy to control diseases that has been found so far. Alternatively, genetic manipulation, employing plant key genes involved in defense, such as members of the NPR-like gene family, has been successful in many crops to improve resistance. The identification and use of the endogenous counterpart genes in the plant of interest (as it is the case of strawberry) is desirable as it would increase the favorable outcome and requires prior knowledge of their defense-related function. Using RNAi technology in strawberry, transient silencing of Fragaria ananassa NPR3 members in fruit significantly reduced tissue damage after Colletotrichum acutatum infection, whereas the ectopic expression of either FaNPR3.1 or FaNPR3.2 did not have an apparent effect. Furthermore, the ectopic expression of FaNPR3.2 in Arabidopsis thaliana double-mutant npr3npr4 reverted the disease resistance phenotype to Pseudomonas syringe to wild-type levels. Therefore, the results revealed that members of the strawberry FaNPR3 clade negatively regulate the defense response to pathogens, as do their Arabidopsis AtNPR3/AtNPR4 orthologs. Also, evidence was found showing that FaNPR3 members act in strawberry (F. ananassa) as positive regulators of WRKY genes, FaWRKY19 and FaWRKY24; additionally, in Arabidopsis, FaNPR3.2 negatively regulates its orthologous genes AtNPR3/AtNPR4. We report for the first time the functional characterization of FaNPR3 members in F. ananassa, which provides a relevant molecular basis for the improvement of resistance in this species through new breeding technologies.
Collapse
Affiliation(s)
- Victoria Súnico
- Biotechnology and Plant Pharmacognosy (BIO-278), Department of Biochemistry and Molecular Biology, Campus de Rabanales, Severo Ochoa building-C6, University of Córdoba, UCO-CeiA3, 14071 Córdoba, Spain; (V.S.); (J.J.H.); (J.M.-B.)
| | - José Javier Higuera
- Biotechnology and Plant Pharmacognosy (BIO-278), Department of Biochemistry and Molecular Biology, Campus de Rabanales, Severo Ochoa building-C6, University of Córdoba, UCO-CeiA3, 14071 Córdoba, Spain; (V.S.); (J.J.H.); (J.M.-B.)
| | - Francisco Amil-Ruiz
- Bioinformatics Unit, Central Research Support Service (SCAI), University of Córdoba, 14071 Córdoba, Spain;
| | - Isabel Arjona-Girona
- Department of Crop Protection, Institute for Sustainable Agriculture (CSIC), Alameda del Obispo s/n, 14004 Córdoba, Spain; (I.A.-G.); (C.J.L.-H.)
| | - Carlos J. López-Herrera
- Department of Crop Protection, Institute for Sustainable Agriculture (CSIC), Alameda del Obispo s/n, 14004 Córdoba, Spain; (I.A.-G.); (C.J.L.-H.)
| | - Juan Muñoz-Blanco
- Biotechnology and Plant Pharmacognosy (BIO-278), Department of Biochemistry and Molecular Biology, Campus de Rabanales, Severo Ochoa building-C6, University of Córdoba, UCO-CeiA3, 14071 Córdoba, Spain; (V.S.); (J.J.H.); (J.M.-B.)
| | - Ana María Maldonado-Alconada
- Agroforestry and Plant Biochemistry, Proteomics and Systems Biology, Department of Biochemistry and Molecular Biology, University of Cordoba, UCO-CeiA3, 14014 Córdoba, Spain
| | - José L. Caballero
- Biotechnology and Plant Pharmacognosy (BIO-278), Department of Biochemistry and Molecular Biology, Campus de Rabanales, Severo Ochoa building-C6, University of Córdoba, UCO-CeiA3, 14071 Córdoba, Spain; (V.S.); (J.J.H.); (J.M.-B.)
| |
Collapse
|
2
|
Yan H, Ma D, Yi P, Sun G, Chen X, Yi Y, Huang X. Highly efficient Agrobacterium rhizogenes-mediated transformation for functional analysis in woodland strawberry. PLANT METHODS 2023; 19:99. [PMID: 37742022 PMCID: PMC10517450 DOI: 10.1186/s13007-023-01078-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/03/2023] [Accepted: 09/08/2023] [Indexed: 09/25/2023]
Abstract
BACKGROUND The diploid woodland strawberry (Fragaria vesca) is an excellent model plant for investigating economically significant traits and several genetic resources within the Rosaceae family. Agrobacterium rhizogenes-mediated hairy root transformation is an alternative for exploring gene functions, especially the genes specifically expressed in roots. However, the hairy root transformation has not been established in strawberry. RESULTS Here, we described an efficient and rapid hairy root transgenic system for strawberry using A. rhizogenes. Strain of A. rhizogenes MSU440 or C58C1 was the most suitable for hairy root transformation. The transformation efficiency was highest when tissues contained hypocotyls as explants. The optimal procedure involves A. rhizogenes at an optical density (OD600) of 0.7 for 10 min and co-cultivation duration for four days, achieving a transgenic efficiency of up to 71.43%. An auxin responsive promoter DR5ver2 carrying an enhanced green fluorescent protein (eGFP) marker was transformed by A. rhizogenes MSU440, thereby generating transgenic hairy roots capable of high eGFP expression in root tip and meristem of strawberry where auxin accumulated. Finally, this system was applied for functional analysis using jGCaMP7c, which could sense calcium signals. A significant upsurge in eGFP expression in the transgenic hairy roots was displayed after adding calcium chloride. The results suggested that this approach was feasible for studying specific promoters and could be a tool to analyze gene functions in the roots of strawberries. CONCLUSION We established a rapid and efficient hairy root transformation in strawberry by optimizing parameters, which was adequate for promoter analysis and functional characterization of candidate genes in strawberry and other rosaceous plants.
Collapse
Affiliation(s)
- Huiqing Yan
- School of Life Sciences, Guizhou Normal University, Guiyang, 550001, China
| | - Dandan Ma
- School of Life Sciences, Guizhou Normal University, Guiyang, 550001, China
- Key Laboratory of Plant Physiology and Development Regulation, Guizhou Normal University, Guiyang, 550001, China
- Key Laboratory of State Forestry Administration on Bioaffiliationersity Conservation in Mountainous Karst Area of Southwestern China, Guizhou Normal University, Guiyang, 550001, China
| | - Peipei Yi
- School of Life Sciences, Guizhou Normal University, Guiyang, 550001, China
- Key Laboratory of Plant Physiology and Development Regulation, Guizhou Normal University, Guiyang, 550001, China
- Key Laboratory of State Forestry Administration on Bioaffiliationersity Conservation in Mountainous Karst Area of Southwestern China, Guizhou Normal University, Guiyang, 550001, China
| | - Guilian Sun
- School of Life Sciences, Guizhou Normal University, Guiyang, 550001, China
- Key Laboratory of Plant Physiology and Development Regulation, Guizhou Normal University, Guiyang, 550001, China
- Key Laboratory of State Forestry Administration on Bioaffiliationersity Conservation in Mountainous Karst Area of Southwestern China, Guizhou Normal University, Guiyang, 550001, China
| | - Xingyan Chen
- School of Life Sciences, Guizhou Normal University, Guiyang, 550001, China
| | - Yin Yi
- School of Life Sciences, Guizhou Normal University, Guiyang, 550001, China
- Key Laboratory of Plant Physiology and Development Regulation, Guizhou Normal University, Guiyang, 550001, China
- Key Laboratory of State Forestry Administration on Bioaffiliationersity Conservation in Mountainous Karst Area of Southwestern China, Guizhou Normal University, Guiyang, 550001, China
| | - Xiaolong Huang
- School of Life Sciences, Guizhou Normal University, Guiyang, 550001, China.
- Key Laboratory of Plant Physiology and Development Regulation, Guizhou Normal University, Guiyang, 550001, China.
- Key Laboratory of State Forestry Administration on Bioaffiliationersity Conservation in Mountainous Karst Area of Southwestern China, Guizhou Normal University, Guiyang, 550001, China.
| |
Collapse
|
3
|
Chen X, Gu X, Gao F, Guo J, Shen Y. The protein kinase FvRIPK1 regulates plant morphogenesis by ABA signaling using seed genetic transformation in strawberry. FRONTIERS IN PLANT SCIENCE 2022; 13:1026571. [PMID: 36388498 PMCID: PMC9659869 DOI: 10.3389/fpls.2022.1026571] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/24/2022] [Accepted: 10/11/2022] [Indexed: 06/16/2023]
Abstract
A strawberry RIPK1, a leu-rich repeat receptor-like protein kinase, is previously demonstrated to be involved in fruit ripening as a positive regulator; however, its role in vegetable growth remains unknown. Here, based on our first establishment of Agrobacterium-mediated transformation of germinating seeds in diploid strawberry by FvCHLH/FvABAR, a reporter gene that functioned in chlorophyll biosynthesis, we got FvRIPK1-RNAi mutants. Downregulation of FvRIPK1 inhibited plant morphogenesis, showing curled leaves; also, this silencing significantly reduced FvABAR and FvABI1 transcripts and promoted FvABI4, FvSnRK2.2, and FvSnRK2.6 transcripts. Interestingly, the downregulation of the FvCHLH/ABAR expression could not affect FvRIPK1 transcripts but remarkably reduced FvABI1 transcripts and promoted FvABI4, FvSnRK2.2, and FvSnRK2.6 transcripts in the contrast of the non-transgenic plants to the FvCHLH/FvABAR-RNAi plants, in which chlorophyll contents were not affected but had abscisic acid (ABA) response in stomata movement and drought stress. The distinct expression level of FvABI1 and FvABI4, together with the similar expression level of FvSnRK2.2 and FvSnRK2.6 in the FvRIPK1- and FvABAR/CHLH-RNAi plants, suggested that FvRIPK1 regulated plant morphogenesis probably by ABA signaling. In addition, FvRIPK1 interacted with FvSnRK2.6 and phosphorylated each other, thus forming the FvRIPK1-FvSnRK2.6 complex. In conclusion, our results provide new insights into the molecular mechanism of FvRIPK1 in plant growth.
Collapse
Affiliation(s)
- Xuexue Chen
- College of Plant Science and Technology, Beijing University of Agriculture, Beijing, China
- Bei Jing Bei Nong Enterprise Management Co., Ltd, Beijing, China
| | - Xiaojiao Gu
- College of Plant Science and Technology, Beijing University of Agriculture, Beijing, China
| | - Fan Gao
- College of Plant Science and Technology, Beijing University of Agriculture, Beijing, China
| | - Jiaxuan Guo
- College of Plant Science and Technology, Beijing University of Agriculture, Beijing, China
| | - Yuanyue Shen
- College of Plant Science and Technology, Beijing University of Agriculture, Beijing, China
| |
Collapse
|
4
|
Súnico V, Higuera JJ, Molina-Hidalgo FJ, Blanco-Portales R, Moyano E, Rodríguez-Franco A, Muñoz-Blanco J, Caballero JL. The Intragenesis and Synthetic Biology Approach towards Accelerating Genetic Gains on Strawberry: Development of New Tools to Improve Fruit Quality and Resistance to Pathogens. PLANTS (BASEL, SWITZERLAND) 2021; 11:plants11010057. [PMID: 35009061 PMCID: PMC8747664 DOI: 10.3390/plants11010057] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/29/2021] [Revised: 12/15/2021] [Accepted: 12/21/2021] [Indexed: 05/13/2023]
Abstract
Under climate change, the spread of pests and pathogens into new environments has a dramatic effect on crop protection control. Strawberry (Fragaria spp.) is one the most profitable crops of the Rosaceae family worldwide, but more than 50 different genera of pathogens affect this species. Therefore, accelerating the improvement of fruit quality and pathogen resistance in strawberry represents an important objective for breeding and reducing the usage of pesticides. New genome sequencing data and bioinformatics tools has provided important resources to expand the use of synthetic biology-assisted intragenesis strategies as a powerful tool to accelerate genetic gains in strawberry. In this paper, we took advantage of these innovative approaches to create four RNAi intragenic silencing cassettes by combining specific strawberry new promoters and pathogen defense-related candidate DNA sequences to increase strawberry fruit quality and resistance by silencing their corresponding endogenous genes, mainly during fruit ripening stages, thus avoiding any unwanted effect on plant growth and development. Using a fruit transient assay, GUS expression was detected by the two synthetic FvAAT2 and FvDOF2 promoters, both by histochemical assay and qPCR analysis of GUS transcript levels, thus ensuring the ability of the same to drive the expression of the silencing cassettes in this strawberry tissue. The approaches described here represent valuable new tools for the rapid development of improved strawberry lines.
Collapse
|
5
|
Duan K, Zhao YJ, Li ZY, Zou XH, Yang J, Guo CL, Chen SY, Yang XR, Gao QH. A Strategy for the Production and Molecular Validation of Agrobacterium-Mediated Intragenic Octoploid Strawberry. PLANTS 2021; 10:plants10112229. [PMID: 34834592 PMCID: PMC8622968 DOI: 10.3390/plants10112229] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/01/2021] [Revised: 10/16/2021] [Accepted: 10/16/2021] [Indexed: 11/16/2022]
Abstract
Intragenesis is an all-native engineering technology for crop improvement. Using an intragenic strategy to bring genes from wild species to cultivated strawberry could expand the genetic variability. A robust regeneration protocol was developed for the strawberry cv. ‘Shanghai Angel’ by optimizing the dose of Thidiazuron and identifying the most suitable explants. The expression cassette was assembled with all DNA fragments from F. vesca, harboring a sugar transporter gene FvSTP8 driven by a fruit-specific FvKnox promoter. Transformed strawberry was developed through an Agrobacterium-mediated strategy without any selectable markers. Other than PCR selection, probe-based duplex droplet digital PCR (ddPCR) was performed to determine the T-DNA insert. Four independent transformed shoots were obtained with a maximum of 5.3% efficiency. Two lines were confirmed to be chimeras, while the other two were complete transformants with six and 11 copies of the intragene, respectively. The presence of a vector backbone beyond the T-DNA in these transformants indicated that intragenic strawberries were not obtained. The current work optimized the procedures for producing transformed strawberry without antibiotic selection, and accurately determined the insertion copies by ddPCR in the strawberry genome for the first time. These strategies might be promising for the engineering of ‘Shanghai Angel’ and other cultivars to improve agronomic traits.
Collapse
Affiliation(s)
- Ke Duan
- Shanghai Key Laboratory of Protected Horticultural Technology, Forestry and Fruit Tree Research Institute, Shanghai Academy of Agricultural Sciences (SAAS), Shanghai 201403, China; (X.-H.Z.); (J.Y.); (X.-R.Y.)
- Correspondence: (K.D.); (Q.-H.G.)
| | - Ying-Jie Zhao
- Lanzhou New Area Academy of Modern Agricultural Sciences, Lanzhou 730300, China;
| | - Zi-Yi Li
- Ecological Technique and Engineering College, Shanghai Institute of Technology, Shanghai 201418, China;
| | - Xiao-Hua Zou
- Shanghai Key Laboratory of Protected Horticultural Technology, Forestry and Fruit Tree Research Institute, Shanghai Academy of Agricultural Sciences (SAAS), Shanghai 201403, China; (X.-H.Z.); (J.Y.); (X.-R.Y.)
| | - Jing Yang
- Shanghai Key Laboratory of Protected Horticultural Technology, Forestry and Fruit Tree Research Institute, Shanghai Academy of Agricultural Sciences (SAAS), Shanghai 201403, China; (X.-H.Z.); (J.Y.); (X.-R.Y.)
| | - Cheng-Lin Guo
- Hangzhou Woosen Biotechnology Co., Ltd., Hangzhou 310012, China;
| | - Si-Yu Chen
- College of Food Science, Shanghai Ocean University, Shanghai 201306, China;
| | - Xiu-Rong Yang
- Shanghai Key Laboratory of Protected Horticultural Technology, Forestry and Fruit Tree Research Institute, Shanghai Academy of Agricultural Sciences (SAAS), Shanghai 201403, China; (X.-H.Z.); (J.Y.); (X.-R.Y.)
| | - Qing-Hua Gao
- Shanghai Key Laboratory of Protected Horticultural Technology, Forestry and Fruit Tree Research Institute, Shanghai Academy of Agricultural Sciences (SAAS), Shanghai 201403, China; (X.-H.Z.); (J.Y.); (X.-R.Y.)
- Correspondence: (K.D.); (Q.-H.G.)
| |
Collapse
|
6
|
Khan MS, Joyia FA, Mustafa G. Seeds as Economical Production Platform for Recombinant Proteins. Protein Pept Lett 2020; 27:89-104. [DOI: 10.2174/0929866526666191014151237] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2018] [Revised: 05/13/2019] [Accepted: 08/02/2019] [Indexed: 11/22/2022]
Abstract
:
The cost-effective production of high-quality and biologically active recombinant
molecules especially proteins is extremely desirable. Seed-based recombinant protein production
platforms are considered as superior choice owing to lack of human/animal pathogenic organisms,
lack of cold chain requirements for transportation and long-term storage, easy scalability and
development of edible biopharmaceuticals in plants with objective to be used in purified or partially
processed form is desirable. This review article summarizes the exceptional features of seed-based
biopharming and highlights the needs of exploiting it for commercial purposes. Plant seeds offer a
perfect production platform for high-value molecules of industrial as well as therapeutic nature
owing to lower water contents, high protein storage capacity, weak protease activity and long-term
storage ability at ambient temperature. Exploiting extraordinarily high protein accumulation
potential, vaccine antigens, antibodies and other therapeutic proteins can be stored without effecting
their stability and functionality up to years in seeds. Moreover, ability of direct oral consumption
and post-harvest stabilizing effect of seeds offer unique feature of oral delivery of pharmaceutical
proteins and vaccine antigens for immunization and disease treatment through mucosal as well as
oral route.
Collapse
Affiliation(s)
- Muhammad Sarwar Khan
- Centre of Agricultural Biochemistry and Biotechnology (CABB), University of Agriculture, Faisalabad, Pakistan
| | - Faiz Ahmad Joyia
- Centre of Agricultural Biochemistry and Biotechnology (CABB), University of Agriculture, Faisalabad, Pakistan
| | - Ghulam Mustafa
- Centre of Agricultural Biochemistry and Biotechnology (CABB), University of Agriculture, Faisalabad, Pakistan
| |
Collapse
|
7
|
Carrasco-Orellana C, Stappung Y, Mendez-Yañez A, Allan AC, Espley RV, Plunkett BJ, Moya-Leon MA, Herrera R. Characterization of a ripening-related transcription factor FcNAC1 from Fragaria chiloensis fruit. Sci Rep 2018; 8:10524. [PMID: 30002382 PMCID: PMC6043618 DOI: 10.1038/s41598-018-28226-y] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2018] [Accepted: 06/19/2018] [Indexed: 11/15/2022] Open
Abstract
Fragaria chiloensis is a strawberry endemic from Chile with attractive white-pink fruit, pleasant aroma and taste. However, this fruit has a limited post-harvest period due to fast softening. Several transcription factors (TFs) are involved in the regulation of fruit ripening, and members of the NAC family have been implicated in cell wall remodeling. FcNAC1 was isolated from F. chiloensis fruit, coding a protein of 332 amino acid residues and displaying a characteristic NAC domain at the N terminus. FcNAC1 protein showed nuclear localization. An increase in transcript level was observed during ripening. A sequence of 1488 bp of FcNAC1 promoter was obtained. In silico analysis identified cis elements able to respond to some hormones and Secondary wall NAC binding elements (SNBE), and responding to auxin and ABA. A structural model of FcNAC1 provided evidence for interaction with DNA sequences containing SNBE, while a dual luciferase assay confirmed the transcriptional activation by FcNAC1 of the promoter of FcPL, a gene involved in cell wall remodeling in F. chiloensis fruit. The results suggest the participation of FcNAC1 during ripening development of strawberry fruit, by regulating pectin metabolism during softening.
Collapse
Affiliation(s)
- C Carrasco-Orellana
- Instituto de Ciencias Biológicas, Universidad de Talca, 2 Norte 685, Talca, Chile
| | - Y Stappung
- Instituto de Ciencias Biológicas, Universidad de Talca, 2 Norte 685, Talca, Chile
| | - A Mendez-Yañez
- Instituto de Ciencias Biológicas, Universidad de Talca, 2 Norte 685, Talca, Chile
| | - A C Allan
- New Zealand Institute for Plant and Food Research Limited, Mt. Albert Research Centre, Auckland, 1025, New Zealand
- School of Biological Sciences, University of Auckland, Private Bag, 92019, Auckland, New Zealand
| | - R V Espley
- New Zealand Institute for Plant and Food Research Limited, Mt. Albert Research Centre, Auckland, 1025, New Zealand
| | - B J Plunkett
- New Zealand Institute for Plant and Food Research Limited, Mt. Albert Research Centre, Auckland, 1025, New Zealand
| | - M A Moya-Leon
- Instituto de Ciencias Biológicas, Universidad de Talca, 2 Norte 685, Talca, Chile
| | - R Herrera
- Instituto de Ciencias Biológicas, Universidad de Talca, 2 Norte 685, Talca, Chile.
| |
Collapse
|
8
|
Zhong G, Zhu Q, Li Y, Liu Y, Wang H. Once for All: A Novel Robust System for Co-expression of Multiple Chimeric Fluorescent Fusion Proteins in Plants. FRONTIERS IN PLANT SCIENCE 2017; 8:1071. [PMID: 28676815 PMCID: PMC5476739 DOI: 10.3389/fpls.2017.01071] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2017] [Accepted: 06/02/2017] [Indexed: 05/24/2023]
Abstract
Chimeric fluorescent fusion proteins have been employed as a powerful tool to reveal the subcellular localizations and dynamics of proteins in living cells. Co-expression of a fluorescent fusion protein with well-known organelle markers in the same cell is especially useful in revealing its spatial and temporal functions of the protein in question. However, the conventional methods for co-expressing multiple fluorescent tagged proteins in plants have the drawbacks of low expression efficiency, variations in the expression level and time-consuming genetic crossing. Here, we have developed a novel robust system that allows for high-efficient co-expression of multiple chimeric fluorescent fusion proteins in plants in a time-saving fashion. This system takes advantage of employing a single expression vector which consists of multiple semi-independent expressing cassettes for the protein co-expression thereby overcoming the limitations of using multiple independent expressing plasmids. In addition, it is a highly manipulable DNA assembly system, in which modification and recombination of DNA molecules are easily achieved through an optimized one-step assembly reaction. By employing this effective system, we demonstrated that co-expression of two chimeric fluorescent fusion reporter proteins of vacuolar sorting receptor and secretory carrier membrane protein gave rise to their perspective subcellular localizations in plants via both transient expression and stable transformation. Thus, we believed that this technical advance represents a promising approach for multi-color-protein co-expression in plant cells.
Collapse
Affiliation(s)
- Guitao Zhong
- College of Life Sciences, South China Agricultural UniversityGuangzhou, China
| | - Qinlong Zhu
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, South China Agricultural UniversityGuangzhou, China
| | - Yingxin Li
- College of Life Sciences, South China Agricultural UniversityGuangzhou, China
| | - Yaoguang Liu
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, South China Agricultural UniversityGuangzhou, China
| | - Hao Wang
- College of Life Sciences, South China Agricultural UniversityGuangzhou, China
| |
Collapse
|
9
|
Lee S, Whitaker VM, Hutton SF. Mini Review: Potential Applications of Non-host Resistance for Crop Improvement. FRONTIERS IN PLANT SCIENCE 2016; 7:997. [PMID: 27462329 PMCID: PMC4939297 DOI: 10.3389/fpls.2016.00997] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/02/2016] [Accepted: 06/24/2016] [Indexed: 05/18/2023]
Abstract
Plant breeding for disease resistance is crucial to sustain global crop production. For decades, plant breeders and researchers have extensively used host plant resistance genes (R-genes) to develop disease resistant cultivars. However, the general instability of R-genes in crop cultivars when challenged with diverse pathogen populations emphasizes the need for more stable means of resistance. Alternatively, non-host resistance is recognized as the most durable, broad-spectrum form of resistance against the majority of potential pathogens in plants and has gained great attention as an alternative target for managing resistance. While transgenic approaches have been utilized to transfer non-host resistance to host species, conventional breeding applications have been more elusive. Nevertheless, avenues for discovery and deployment of genetic loci for non-host resistance via hybridization are increasingly abundant, particularly when transferring genes among closely related species. In this mini review, we discuss current and developing applications of non-host resistance for crop improvement with a focus on the overlap between host and non-host mechanisms and the potential impacts of new technology.
Collapse
Affiliation(s)
- Seonghee Lee
- Department of Horticultural Science, Gulf Coast Research and Education Center, Institute of Food and Agricultural Sciences, University of Florida, Gainesville, FLUSA
| | | | | |
Collapse
|
10
|
Mazzoni L, Perez-Lopez P, Giampieri F, Alvarez-Suarez JM, Gasparrini M, Forbes-Hernandez TY, Quiles JL, Mezzetti B, Battino M. The genetic aspects of berries: from field to health. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2016; 96:365-71. [PMID: 25872898 DOI: 10.1002/jsfa.7216] [Citation(s) in RCA: 72] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/14/2015] [Revised: 03/24/2015] [Accepted: 04/10/2015] [Indexed: 05/03/2023]
Abstract
Berries are a relevant source of micronutrients and nonessential phytochemicals, such as polyphenol compounds, that play a synergistic and cumulative role in human health promotion. Several systematic analyses showed that berry phenolics are able to detoxify reactive oxygen and nitrogen species, blocking their production, to intervene in the cell cycle, participating in the transduction and expression of genes involved in apoptosis, and to repair oxidative DNA damage. As a consequence, the improvement of the nutritional quality of berries has become a new quality target of breeding and biotechnological strategies, to control or to increase the content of specific health-related compounds in fruits. This work reviews, on the basis of the in vitro and in vivo evidence, the main berries' phytochemical compounds and their possible mechanisms of action on pathways involved in several type of diseases, with particular attention to cancer, inflammation, neurodegeneration, diabetes and cardiovascular diseases.
Collapse
Affiliation(s)
- Luca Mazzoni
- Dipartimento di Scienze Cliniche Specialistiche ed Odontostomatologiche (DISCO), Facoltà di Medicina, Università Politecnica delle Marche, Ancona, Italy
| | - Patricia Perez-Lopez
- Department of Physiology, Institute of Nutrition and Food Technology 'José Mataix, Biomedical Research Center, University of Granada, Granada, Spain
| | - Francesca Giampieri
- Dipartimento di Scienze Agrarie, Alimentari e Ambientali, Università Politecnica delle Marche, Ancona, Italy
| | - Jose M Alvarez-Suarez
- Dipartimento di Scienze Cliniche Specialistiche ed Odontostomatologiche (DISCO), Facoltà di Medicina, Università Politecnica delle Marche, Ancona, Italy
- Facultad de Ciencias de la Salud, Universidad Nacional de Chimborazo, Riobamba, Ecuador
| | - Massimiliano Gasparrini
- Dipartimento di Scienze Cliniche Specialistiche ed Odontostomatologiche (DISCO), Facoltà di Medicina, Università Politecnica delle Marche, Ancona, Italy
| | - Tamara Y Forbes-Hernandez
- Dipartimento di Scienze Cliniche Specialistiche ed Odontostomatologiche (DISCO), Facoltà di Medicina, Università Politecnica delle Marche, Ancona, Italy
- Area de Nutrición y Salud, Universidad Internacional Iberoamericana (UNINI), Campeche, CP, 24040, Mexico
| | - Jose L Quiles
- Department of Physiology, Institute of Nutrition and Food Technology 'José Mataix, Biomedical Research Center, University of Granada, Granada, Spain
| | - Bruno Mezzetti
- Dipartimento di Scienze Agrarie, Alimentari e Ambientali, Università Politecnica delle Marche, Ancona, Italy
| | - Maurizio Battino
- Dipartimento di Scienze Cliniche Specialistiche ed Odontostomatologiche (DISCO), Facoltà di Medicina, Università Politecnica delle Marche, Ancona, Italy
- Director Centre for Nutrition and Health, Universidad Europea del Atlantico (UEA), Santander, 39011, Spain
| |
Collapse
|
11
|
Fernández-Lara R, Gordillo B, Rodríguez-Pulido FJ, Lourdes González-Miret M, del Villar-Martínez AA, Dávila-Ortiz G, Heredia FJ. Assessment of the differences in the phenolic composition and color characteristics of new strawberry ( Fragaria x ananassa Duch.) cultivars by HPLC–MS and Imaging Tristimulus Colorimetry. Food Res Int 2015; 76:645-653. [DOI: 10.1016/j.foodres.2015.07.038] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2015] [Revised: 07/22/2015] [Accepted: 07/24/2015] [Indexed: 01/04/2023]
|
12
|
Guidarelli M, Baraldi E. Transient transformation meets gene function discovery: the strawberry fruit case. FRONTIERS IN PLANT SCIENCE 2015; 6:444. [PMID: 26124771 PMCID: PMC4464107 DOI: 10.3389/fpls.2015.00444] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/25/2015] [Accepted: 05/29/2015] [Indexed: 05/20/2023]
Abstract
Beside the well known nutritional and health benefits, strawberry (FragariaXananassa) crop draws increasing attention as plant model system for the Rosaceae family, due to the short generation time, the rapid in vitro regeneration, and to the availability of the genome sequence of F.Xananassa and F. vesca species. In the last years, the use of high-throughput sequence technologies provided large amounts of molecular information on the genes possibly related to several biological processes of this crop. Nevertheless, the function of most genes or gene products is still poorly understood and needs investigation. Transient transformation technology provides a powerful tool to study gene function in vivo, avoiding difficult drawbacks that typically affect the stable transformation protocols, such as transformation efficiency, transformants selection, and regeneration. In this review we provide an overview of the use of transient expression in the investigation of the function of genes important for strawberry fruit development, defense and nutritional properties. The technical aspects related to an efficient use of this technique are described, and the possible impact and application in strawberry crop improvement are discussed.
Collapse
Affiliation(s)
| | - Elena Baraldi
- Laboratory of Plant Pathology and Biotechnology, Department of Agricultural Sciences, University of BolognaBologna, Italy
| |
Collapse
|
13
|
Haddadi F, Aziz MA, Abdullah SNA, Tan SG, Kamaladini H. An efficient Agrobacterium-mediated transformation of strawberry cv. Camarosa by a dual plasmid system. Molecules 2015; 20:3647-66. [PMID: 25711423 PMCID: PMC6272677 DOI: 10.3390/molecules20033647] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2014] [Accepted: 11/25/2014] [Indexed: 11/16/2022] Open
Abstract
An Agrobacterium-mediated transformation method was applied to introduce the luciferase reporter gene under the control of the CaMV35S promoter in the pGreen0049 binary vector into strawberry cv. Camarosa. The in vitro regeneration system of strawberry leaves to be used in the transformation was optimized using different TDZ concentrations in MS medium. TDZ at 16 µM showed the highest percentage (100%) of shoot formation and the highest mean number of shoots (24) produced per explant. Studies on the effects of different antibiotics, namely timentin, cefotaxime, carbenicillin and ampicillin, on shoot regeneration of strawberry leaf explants showed the best shoot regeneration in the presence of 300 mg/L timentin and 150 mg/L cefotaxime. Assessment of the different factors affecting Agrobacterium mediated-transformation of strawberry with the luciferase gene showed the highest efficiency of putative transformant production (86%) in the treatment with no preculture, bacterial OD600 of 0.6 and the addition of 150 mg/L cefotaxime in the pre-selection and selection media. The presence of the luciferase gene in the plant genome was verified by the luciferase reporter gene assay, nested PCR amplification and dot blot of genomic DNA isolated from the young leaves of each putatively transformed plantlet.
Collapse
Affiliation(s)
- Fatemeh Haddadi
- Department of Agriculture Technology, Faculty of Agriculture, Universiti Putra Malaysia, Serdang, Selangor 43400, Malaysia.
- Department of Biology, Faculty of Sciences, University of Zabol, Zabol 9861335856, Iran.
| | - Maheran Abd Aziz
- Department of Agriculture Technology, Faculty of Agriculture, Universiti Putra Malaysia, Serdang, Selangor 43400, Malaysia.
- Laboratory of Plantation Crops, Institute of Tropical Agriculture, Universiti Putra Malaysia, Serdang, Selangor 43400, Malaysia.
| | - Siti Nor Akmar Abdullah
- Department of Agriculture Technology, Faculty of Agriculture, Universiti Putra Malaysia, Serdang, Selangor 43400, Malaysia.
- Laboratory of Plantation Crops, Institute of Tropical Agriculture, Universiti Putra Malaysia, Serdang, Selangor 43400, Malaysia.
| | - Soon Guan Tan
- Department of Cell and Molecular Biology, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, Serdang, Selangor 43400, Malaysia.
| | - Hossein Kamaladini
- Department of Agriculture Technology, Faculty of Agriculture, Universiti Putra Malaysia, Serdang, Selangor 43400, Malaysia.
- Department of Biology, Faculty of Sciences, University of Zabol, Zabol 9861335856, Iran.
| |
Collapse
|
14
|
Abstract
Genetic transformation in strawberry (Fragaria spp.) can be achieved by using the Agrobacterium-mediated procedure on leaves from in vitro proliferated shoots. Regardless of the sufficient regeneration levels achieved from leaf explants of some commercial strawberry genotypes, the regeneration of transformed strawberry plants remains difficult and seems to be strongly genotype dependent. In fact, the main factors that play an important role in the success of strawberry genetic transformation are the availability of an efficient regeneration protocol and of an appropriate selection procedure of the putative transgenic shoots. The strawberry genetic transformation protocol herein described relates to three genotypes resulted from our experience with the highest regeneration and transformation efficiency. The study includes two octoploid Fragaria × ananassa cultivars, Sveva and Calypso, and a diploid F. vesca cultivar (Alpina W.O.). All the different steps related to the leaf tissue Agrobacterium infection, coculture, and selection of regenerating adventitious shoots, as well as the following identification of selected lines able to proliferate and root on the selective agent (kanamycin), will be described.
Collapse
Affiliation(s)
- Roberto Cappelletti
- Department of Agriculture, Food and Environmental Sciences, Università Politecnica delle Marche, 60100, Ancona, Italy
| | | | | |
Collapse
|
15
|
Negri AS, Allegra D, Simoni L, Rusconi F, Tonelli C, Espen L, Galbiati M. Comparative analysis of fruit aroma patterns in the domesticated wild strawberries "Profumata di Tortona" (F. moschata) and "Regina delle Valli" (F. vesca). FRONTIERS IN PLANT SCIENCE 2015; 6:56. [PMID: 25717332 PMCID: PMC4324068 DOI: 10.3389/fpls.2015.00056] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/27/2014] [Accepted: 01/22/2015] [Indexed: 05/22/2023]
Abstract
Strawberry is one of the most valued fruit worldwide. Modern cultivated varieties (Fragaria × ananassa) exhibit large fruits, with intense color and prolonged shell life. Yet, these valuable traits were attained at the cost of the intensity and the variety of the aroma of the berry, two characteristics highly appreciated by consumers. Wild species display smaller fruits and reduced yield compared with cultivated varieties but they accumulate broader and augmented blends of volatile compounds. Because of the large diversity and strength of aromas occurring in natural and domesticated populations, plant breeders regard wild strawberries as important donors of novel scented molecules. Here we report a comprehensive metabolic map of the aroma of the wild strawberry Profumata di Tortona (PdT), an ancient clone of F. moschata, considered as one of the most fragrant strawberry types of all. Comparison with the more renowned woodland strawberry Regina delle Valli (RdV), an aromatic cultivar of F. vesca, revealed a significant enrichment in the total level of esters, alcohols and furanones and a reduction in the content of ketones in in the aroma of PdT berries. Among esters, particularly relevant was the enhanced accumulation of methyl anthranilate, responsible for the intensive sweetish impression of wild strawberries. Interestingly, increased ester accumulation in PdT fruits correlated with enhanced expression of the Strawberry Alcohol Acyltransferase (SAAT) gene, a key regulator of flavor biogenesis in ripening berries. We also detected a remarkable 900-fold increase in the level of mesifurane, the furanone conferring the typical caramel notes to most wild species.
Collapse
Affiliation(s)
- Alfredo S. Negri
- Dipartimento di Scienze Agrarie e Ambientali - Produzione, Territorio, Agroenergia, Università degli Studi di MilanoMilan, Italy
| | | | - Laura Simoni
- Plant Model System Platform, Fondazione FilareteMilan, Italy
| | - Fabio Rusconi
- Plant Model System Platform, Fondazione FilareteMilan, Italy
| | - Chiara Tonelli
- Department of Life Sciences, Università degli Studi di MilanoMilan, Italy
| | - Luca Espen
- Dipartimento di Scienze Agrarie e Ambientali - Produzione, Territorio, Agroenergia, Università degli Studi di MilanoMilan, Italy
- *Correspondence: Luca Espen, Dipartimento di Scienze Agrarie e Ambientali - Produzione, Territorio, Agroenergia, Università degli Studi di Milano, Via Celoria 2, Milano 20133, Italy e-mail:
| | - Massimo Galbiati
- Plant Model System Platform, Fondazione FilareteMilan, Italy
- Department of Life Sciences, Università degli Studi di MilanoMilan, Italy
- Massimo Galbiati, Department of Life Sciences, Università degli Studi di Milano, Via Celoria 26, Milano 20133, Italy e-mail:
| |
Collapse
|
16
|
Dutt M, Dhekney SA, Soriano L, Kandel R, Grosser JW. Temporal and spatial control of gene expression in horticultural crops. HORTICULTURE RESEARCH 2014; 1:14047. [PMID: 26504550 PMCID: PMC4596326 DOI: 10.1038/hortres.2014.47] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/25/2014] [Revised: 07/19/2014] [Accepted: 08/06/2014] [Indexed: 05/05/2023]
Abstract
Biotechnology provides plant breeders an additional tool to improve various traits desired by growers and consumers of horticultural crops. It also provides genetic solutions to major problems affecting horticultural crops and can be a means for rapid improvement of a cultivar. With the availability of a number of horticultural genome sequences, it has become relatively easier to utilize these resources to identify DNA sequences for both basic and applied research. Promoters play a key role in plant gene expression and the regulation of gene expression. In recent years, rapid progress has been made on the isolation and evaluation of plant-derived promoters and their use in horticultural crops, as more and more species become amenable to genetic transformation. Our understanding of the tools and techniques of horticultural plant biotechnology has now evolved from a discovery phase to an implementation phase. The availability of a large number of promoters derived from horticultural plants opens up the field for utilization of native sequences and improving crops using precision breeding. In this review, we look at the temporal and spatial control of gene expression in horticultural crops and the usage of a variety of promoters either isolated from horticultural crops or used in horticultural crop improvement.
Collapse
Affiliation(s)
- Manjul Dutt
- Citrus Research and Education Center, University of Florida, 700 Experiment Station Road, Lake Alfred, FL 33850, USA
| | - Sadanand A Dhekney
- Department of Plant Sciences, Sheridan Research and Extension Center, University of Wyoming, Sheridan, WY 82801, USA
| | - Leonardo Soriano
- Citrus Research and Education Center, University of Florida, 700 Experiment Station Road, Lake Alfred, FL 33850, USA
- Universidade de Sao Paulo, Centro de Energia Nuclear na Agricultura, Piracicaba, Brazil
| | - Raju Kandel
- Department of Plant Sciences, Sheridan Research and Extension Center, University of Wyoming, Sheridan, WY 82801, USA
| | - Jude W Grosser
- Citrus Research and Education Center, University of Florida, 700 Experiment Station Road, Lake Alfred, FL 33850, USA
| |
Collapse
|
17
|
Zhang Q, Folta KM, Davis TM. Somatic embryogenesis, tetraploidy, and variant leaf morphology in transgenic diploid strawberry (Fragaria vesca subspecies vesca 'Hawaii 4'). BMC PLANT BIOLOGY 2014; 14:23. [PMID: 24418064 PMCID: PMC3898059 DOI: 10.1186/1471-2229-14-23] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/15/2013] [Accepted: 12/18/2013] [Indexed: 05/09/2023]
Abstract
BACKGROUND The diploid (2n = 2x = 14) strawberry model plant Fragaria vesca ssp. vesca 'Hawaii 4' was employed for functional analysis of expressed DNA sequences initially identified as being unique to Fragaria and of unknown or poorly understood function. 'Hawaii 4' is prominent in strawberry research due to its ease of Agrobacterium-mediated transformation and regenerability, and its status as the source of the first complete strawberry genomic sequence. Our studies of a set of transformants have documented intriguing, construct-associated effects on leaf morphology, and provide important and unexpected insights into the performance of the 'Hawaii 4' transformation and regeneration system. RESULTS Following Agrobacterium-mediated transformation of leaf explants with gene constructs carried by Gateway® vectors, plants were regenerated using a modified version of an established 'Hawaii 4' protocol. Expanding upon the findings of prior studies, we documented that plantlet regeneration was occurring via a somatic embryogenic rather than an organogenic developmental pathway. Among transformants, several variations in leaf morphology were observed. Unexpectedly, a particular leaf variant type, occurring in ~17% of all regenerants independent of construct type, was found to be attributable to tetraploidy. The tetraploidy-associated alteration in leaf morphology could be differentiated from the leaf morphology of diploid regenerants on the basis of a quantitative ratio of leaf dimensions: B/A, where B is the width of the central leaflet and A is the overall width of the trifoliate leaf. Variant effects on leaf morphology of four different transgenic constructs were also documented, and were in all cases distinguishable from the effects of tetraploidy. CONCLUSIONS These results define opportunities to optimize the existing 'Hawaii 4' protocol by focusing on treatments that specifically promote somatic embryogenesis. The reported morphological metric and descriptions will guide future transgenic studies using the 'Hawaii 4' model system by alerting researchers to the potential occurrence of polyploid regenerants, and to differentiating the effects on leaf morphology due to polyploidy versus transgenic manipulations. Finally, an intriguing spectrum of leaf morphology alterations resulting from manipulation of expressed sequences of uncertain function is documented, providing a foundation for detailed studies of the respective genes and their functional roles.
Collapse
Affiliation(s)
- Qian Zhang
- Department of Biological Sciences, University of New Hampshire, Durham, NH 03824, USA
| | - Kevin M Folta
- Horticultural Sciences Department and the Graduate Program in Plant Molecular and Cellular Biology, 1301 Fifield Hall University of Florida, Gainesville, FL 32611, USA
| | - Thomas M Davis
- Department of Biological Sciences, University of New Hampshire, Durham, NH 03824, USA
| |
Collapse
|
18
|
Rai MK, Shekhawat NS. Recent advances in genetic engineering for improvement of fruit crops. PLANT CELL, TISSUE AND ORGAN CULTURE (PCTOC) 2014; 116:1-15. [PMID: 0 DOI: 10.1007/s11240-013-0389-9] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/2013] [Accepted: 09/30/2013] [Indexed: 05/24/2023]
|
19
|
|
20
|
Pantazis CJ, Fisk S, Mills K, Flinn BS, Shulaev V, Veilleux RE, Dan Y. Development of an efficient transformation method by Agrobacterium tumefaciens and high throughput spray assay to identify transgenic plants for woodland strawberry (Fragaria vesca) using NPTII selection. PLANT CELL REPORTS 2013; 32:329-337. [PMID: 23160638 DOI: 10.1007/s00299-012-1366-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/19/2012] [Revised: 10/19/2012] [Accepted: 10/29/2012] [Indexed: 06/01/2023]
Abstract
KEY MESSAGE : We developed an efficient Agrobacterium -mediated transformation method using an Ac/Ds transposon tagging construct for F. vesca and high throughput paromomycin spray assay to identify its transformants for strawberry functional genomics. Genomic resources for Rosaceae species are now readily available, including the Fragaria vesca genome, EST sequences, markers, linkage maps, and physical maps. The Rosaceae Genomic Executive Committee has promoted strawberry as a translational genomics model due to its unique biological features and transformability for fruit trait improvement. Our overall research goal is to use functional genomic and metabolic approaches to pursue high throughput gene discovery in the diploid woodland strawberry. F. vesca offers several advantages of a fleshy fruit typical of most fruit crops, short life cycle (seed to seed in 12-16 weeks), small genome size (206 Mbb/C), small plant size, self-compatibility, and many seeds per plant. We have developed an efficient Agrobacterium tumefaciens-mediated strawberry transformation method using kanamycin selection, and high throughput paromomycin spray assay to efficiently identify transgenic strawberry plants. Using our kanamycin transformation method, we were able to produce up to 98 independent kanamycin resistant insertional mutant lines using a T-DNA construct carrying an Ac/Ds transposon Launchpad system from a single transformation experiment involving inoculation of 22 leaf explants of F. vesca accession 551572 within approx. 11 weeks (from inoculation to soil). Transgenic plants with 1-2 copies of a transgene were confirmed by Southern blot analysis. Using our paromomycin spray assay, transgenic F. vesca plants were rapidly identified within 10 days after spraying.
Collapse
Affiliation(s)
- Christopher J Pantazis
- Institute for Advanced Learning and Research, 150 Slayton Avenue Danville, Danville, VA 24540, USA
| | | | | | | | | | | | | |
Collapse
|
21
|
Reduced clonal reproduction indicates low potential for establishment of hybrids between wild and cultivated strawberries (Fragaria vesca × F. × ananassa). Ecol Res 2012. [DOI: 10.1007/s11284-012-0998-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
|
22
|
Hollender CA, Geretz AC, Slovin JP, Liu Z. Flower and early fruit development in a diploid strawberry, Fragaria vesca. PLANTA 2012; 235:1123-39. [PMID: 22198460 DOI: 10.1007/s00425-011-1562-1] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/21/2011] [Accepted: 11/24/2011] [Indexed: 05/23/2023]
Abstract
The diploid woodland strawberry, Fragaria vesca, is being recognized as a model for the more complex octoploid commercial strawberry, Fragaria × ananassa. F. vesca exhibits a short seed to seed cycle, can be easily transformed by Agrobacteria, and a draft genome sequence has been published. These features, together with its similar flower structure, potentially make F. vesca a good model for studying the flower development of other members of the Rosaceae family, which contains many economically important fruit trees and ornamental plants. To propel F. vesca's role in genetic and genomic research and to facilitate the study of its reproductive development, we have investigated in detail F. vesca flower and early fruit development using a seventh generation inbred diploid line, Yellow Wonder 5AF7. We present here standardized developmental staging and detailed descriptions of morphological changes associated with flower and early fruit development based on images of hand dissected flowers, histological sections, and scanning electron microscopy. In situ hybridization with the F. vesca AGAMOUS homolog, FvAG, showed expression in young stamen and carpel primordia. This work lays the essential groundwork and standardization for future molecular, genetic, and genomic studies of F. vesca.
Collapse
Affiliation(s)
- Courtney A Hollender
- Department of Cell Biology and Molecular Genetics, University of Maryland, College Park, 0229 Bioscience Research Building, College Park, MD 20742, USA
| | | | | | | |
Collapse
|
23
|
Cruz-Hernández A, Paredes-lópez O. Fruit Quality: New Insights for Biotechnology. Crit Rev Food Sci Nutr 2012; 52:272-89. [DOI: 10.1080/10408398.2010.499844] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|
24
|
Schulze J, Stoll P, Widmer A, Erhardt A. Searching for gene flow from cultivated to wild strawberries in Central Europe. ANNALS OF BOTANY 2011; 107:699-707. [PMID: 21307039 PMCID: PMC3064547 DOI: 10.1093/aob/mcr018] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/05/2010] [Revised: 11/16/2010] [Accepted: 12/23/2010] [Indexed: 05/30/2023]
Abstract
BACKGROUND AND AIMS Experimental crosses between the diploid woodland strawberry (Fragaria vesca L.) and the octoploid garden strawberry (F. × ananassa Duch.) can lead to the formation of viable hybrids. However, the extent of such hybrid formation under natural conditions is unknown, but is of fundamental interest and importance in the light of the potential future cultivation of transgenic strawberries. A hybrid survey was therefore conducted in the surroundings of ten farms in Switzerland and southern Germany, where strawberries have been cultivated for at least 10 years and where wild strawberries occur in the close vicinity. METHODS In 2007 and 2008, 370 wild F. vesca plants were sampled at natural populations around farms and analysed with microsatellite markers. In 2010, natural populations were revisited and morphological traits of 3050 F. vesca plants were inspected. DNA contents of cell nuclei of morphologically deviating plants were estimated by flow cytometry to identify hybrids. As controls, 50 hybrid plants from interspecific hand-crosses were analysed using microsatellite analysis and DNA contents of cell nuclei were estimated by flow cytometry. KEY RESULTS None of the wild samples collected in 2007 and 2008 contained F. × ananassa microsatellite markers, while all hybrids from hand-crosses clearly contained markers of both parent species. Morphological inspection of wild populations carried out in 2010 and subsequent flow cytometry of ten morphologically deviating plants revealed no hybrids. CONCLUSIONS Hybrid formation or hybrid establishment in natural populations in the survey area is at best a rare event.
Collapse
Affiliation(s)
- Juerg Schulze
- Department of Environmental Sciences, Section Conservation Biology (NLU), University of Basel, St. Johanns-Vorstadt 10, 4056 Basel, Switzerland
| | - Peter Stoll
- Department of Environmental Sciences, Section Conservation Biology (NLU), University of Basel, St. Johanns-Vorstadt 10, 4056 Basel, Switzerland
| | - Alex Widmer
- Institute of Integrative Biology, Plant Ecological Genetics, ETH Zurich, Universitätstr. 16, 8092 Zurich, Switzerland
| | - Andreas Erhardt
- Department of Environmental Sciences, Section Conservation Biology (NLU), University of Basel, St. Johanns-Vorstadt 10, 4056 Basel, Switzerland
| |
Collapse
|
25
|
Olbricht K, Ulrich D, Weiss K, Grafe C. Variation in the amounts of selected volatiles in a model population of fragaria × ananassa Duch. As influenced by harvest year. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2011; 59:944-952. [PMID: 21218780 DOI: 10.1021/jf1034948] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Volatile metabolites are a basis for sensory and resistance traits of Fragaria × ananassa . Stability of expression is important for the selection of cultivars. For the first time, the stability of volatiles in a strawberry population after cross-combination of two distinct cultivars ('Mieze Schindler' × 'Elsanta') has been investigated. In this work, environmentally caused variations in the synthesis of 18 volatiles were studied over two years using a model population of 158 clones. The stability varied throughout the F1 seedling population between the two years, defining stable and unstable genotypes with respect to volatile synthesis. Most of the stable genotypes exhibited low values in relative volatile concentration. Merely 6 stable volatiles were detected in the parental cultivars, whereas about 40% of the F1 progeny had up to 11 stable volatiles. Consequently, a higher stability in volatile synthesis can be achieved by breeding.
Collapse
Affiliation(s)
- Klaus Olbricht
- Hansabred GmbH & Co. KG, Radeburger Landstrasse 12, 01108 Dresden, Germany.
| | | | | | | |
Collapse
|
26
|
Lado J, Vicente E, Manzzioni A, Ares G. Application of a check-all-that-apply question for the evaluation of strawberry cultivars from a breeding program. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2010; 90:2268-2275. [PMID: 20648524 DOI: 10.1002/jsfa.4081] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
BACKGROUND Traditionally, breeding research has been focused on increasing yield and fruit size, improving resistance to diseases, behaviour during transport and increasing postharvest shelf-life. However, consumers' liking is one of the biggest challenges for strawberry breeding programs. In this context, the aim of the present work was to evaluate the application of a check-all-that-apply (CATA) question to study consumers' perception of new strawberry cultivars. RESULTS Average liking scores were low for a highly appreciated product like strawberries, which could be explained considering unfavourable weather conditions prior to harvest. However, despite the small differences in overall liking scores, significant differences were found in the frequency in which 14 out of the 22 terms of the CATA question were used to describe samples. This suggests that the evaluated CATA question was able to detect differences in consumers' perception of the sensory characteristics of the evaluated cultivars. Moreover, a significant correlation was found between laboratory analyses (firmness, colour, soluble solids and acidity) and consumers' responses to the CATA question, which indicates their validity. CONCLUSIONS Considering results from the present study, the use of CATA questions could be a simple and interesting methodology to gain insight into consumers' perception of different fruit cultivars.
Collapse
Affiliation(s)
- Joanna Lado
- Programa Nacional de Producción Hortícola, Instituto Nacional de Investigación Agropecuaria, INIA Salto Grande, Salto, Uruguay
| | | | | | | |
Collapse
|
27
|
Husaini AM. Pre- and post-agroinfection strategies for efficient leaf disk transformation and regeneration of transgenic strawberry plants. PLANT CELL REPORTS 2010; 29:97-110. [PMID: 19956955 DOI: 10.1007/s00299-009-0801-4] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/10/2009] [Revised: 11/02/2009] [Accepted: 11/11/2009] [Indexed: 05/28/2023]
Abstract
Following previously described Agrobacterium tumefaciens-mediated transformation procedures for Fragaria x ananassa Duch. 'Chandler', we undertook several experiments to establish the importance of some parameters affecting transformation. The most important factor that increased the percent recovery of transformants was the introduction of a pre-selection phase, in-between co-cultivation and selection, in which leaf disks were cultured on pre-selection regeneration medium containing validamycin A, timentin, and cefotaxime. The average percentage of leaf disks forming shoots on selection medium containing cefotaxime (250 mg l(-1)) + timentin (250 mg l(-1)) was 5.4% and about three shoots per regenerating leaf disk. Maximum transformation percentage, based on polymerase chain reaction, was 31.25%. Transgene integration and copy number were assessed by Southern hybridization confirming single copy as well as multiple copies of transgene integration in shoots as well as roots separately. This confirmed the non-chimeric nature of these transgenic plants. The system is very promising for the regeneration of genetically transformed cells and obtaining transgenic strawberry plants at high efficiency.
Collapse
Affiliation(s)
- Amjad Masood Husaini
- Department of Biotechnology, Faculty of Science, Jamia Hamdard, New Delhi, India.
| |
Collapse
|
28
|
|
29
|
Landi L, Capocasa F, Costantini E, Mezzetti B. ROLC strawberry plant adaptability, productivity, and tolerance to soil-borne disease and mycorrhizal interactions. Transgenic Res 2009; 18:933-42. [PMID: 19466576 DOI: 10.1007/s11248-009-9279-7] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2008] [Accepted: 05/05/2009] [Indexed: 11/30/2022]
Abstract
The potential to improve strawberry cultivation was assessed regarding the use the rolC genes from Agrobacterium rhizogenes that can confer higher levels of free cytokinins. Strawberry (cv. Calypso) rolC lines were produced by genetic transformation of Agrobacterium tumefaciens. Yield and fruit quality of the control and transgenic lines were measured under open-field conditions. The effects of the transgenic rolC lines depended on gene copy number: rolC lines with one (Line A) or two gene (Line B) copies showed 30% greater yields than controls, due to 20% more fruit per plant and an increased fruit weight. Line A also differed in terms of the highest fruit quality, due to 10.5% increased soluble solids and 12.7% higher acidity. Moreover, cv. Calypso rolC lines A and B had increased tolerance to greenhouse infection by Phytophthora cactorum. Conversely, for all of these characters, Line F (five rolC copies) was not significantly different from the control line. The same lines were also used to examine their symbiosis with root arbuscular mycorrhizal fungi (AMF) using vital and non-vital staining of roots collected at different stages of plant growth. Control and rolC plants showed similar intensities of AMF infection according to plant phenology and/or physiology. Furthermore, possible horizontal gene transfer of the rolC gene was tested for the AMF spores by PCR, with all AMF samples negative using rolC primers. The use of the rolC gene should be considered for the improvements provided in productivity, fruit quality and disease resistance of cultivated strawberry that show no effects on soil microorganisms.
Collapse
Affiliation(s)
- L Landi
- Dipartimento di Scienze Ambientali e delle Produzioni Vegetali, Marche Polytechnic University, Via Brecce Bianche, 60131 Ancona, Italy
| | | | | | | |
Collapse
|
30
|
Martínez Zamora MG, Castagnaro AP, Díaz Ricci JC. Genetic diversity of Pto-like serine/threonine kinase disease resistance genes in cultivated and wild strawberries. J Mol Evol 2008; 67:211-21. [PMID: 18618068 DOI: 10.1007/s00239-008-9134-0] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2008] [Revised: 05/16/2008] [Accepted: 06/09/2008] [Indexed: 02/03/2023]
Abstract
Degenerate oligonucleotide primers, designed based on conserved regions of several serine-threonine kinases (STK) previously cloned in tomato and Arabidopsis, were used to isolate STK candidates in wild and cultivated strawberries. Seven distinct classes of STKs were identified from three related wild species, i.e., Fragaria vesca, Fragaria chiloensis, and Potentilla tucumanensis, and seven different Fragaria x ananassa cultivars. Alignment of the deduced amino acid sequences and the Pto R protein from tomato revealed the presence of characteristic subdomains and conservation of the plant STK consensus and other residues that are crucial for Pto function. Based on identity scores and clustering in phylogenetic trees, five groups were recognized as Pto-like kinases. Strawberry Pto-like clones presented sequences that were clearly identified as the activation segments contained in the Pto, and some of them showed residues previously identified as being required for binding to AvrPto. Some of the non-Pto-like kinases presented a high degree of identity and grouped together with B-lectin receptor kinases that are also involved in disease resistance. Statistical studies carried out to evaluate departure from the neutral theory and nonsynonymous/synonymous substitutions suggest that the evolution of STK-encoding sequences in strawberries is subjected mainly to a purifying selection process. These results represent the first report of Pto-like STKs in strawberry.
Collapse
Affiliation(s)
- M G Martínez Zamora
- INSIBIO (CONICET-UNT), Departamento de Bioquímica de la Nutrición e Instituto de Qca Biológica Dr. Bernabé Bloj (UNT), Chacabuco 461, 4000, Tucuman, Argentina
| | | | | |
Collapse
|