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Othmani A, Hamza H, Kadri K, Sellemi A, Leus L, Werbrouck SPO. The Promising Potential of Triploidy in Date Palm ( Phoenix dactylifera L.) Breeding. Plants (Basel) 2024; 13:815. [PMID: 38592841 PMCID: PMC10975707 DOI: 10.3390/plants13060815] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2024] [Revised: 02/28/2024] [Accepted: 03/07/2024] [Indexed: 04/11/2024]
Abstract
Date palms are a vital part of oasis ecosystems and are an important source of income in arid and semi-arid areas. Crossbreeding is limited due to the long juvenile stage of date palms and their dioecious nature. The aim of this study was to create triploid date palms to obtain larger and seedless fruits and to increase resilience to abiotic stresses. A tetraploid date palm mutant was crossed with a diploid male palm, yielding hundreds of seeds suspected of containing triploid embryos. Six years after planting, four palms with confirmed triploidy reached maturity. They are phenotypically distinct from diploids, with a thicker rachis, thinner spines, wider and longer midleaf spines, and a longer apical spine. They were classified as sterile bisexual, sterile male and fertile female. One of the latter produced very tasty dates with a very small seed, which is promising for the marketability and profitability of date palm fruits. This first report on triploid date palms provides a way in which to make a significant leap forward in date palm breeding. Given the vigor and fruit quality of female triploid date palms, compared to their diploid counterparts, they will be the target of breeding programs and may spearhead new oases.
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Affiliation(s)
- Ahmed Othmani
- Laboratory for In Vitro Tissue Culture, Regional Centre for Research in Oasis Agriculture, Tozeur Km1, Degueche 2260, Tunisia; (A.O.); (A.S.)
- LR21AGR03-Production and Protection for Sustainable Horticulture (2-PHD), Regional Research Centre on Horticulture and Organic Agriculture Chott Mariem, University of Sousse, Sousse 4042, Tunisia
| | - Hammadi Hamza
- Arid and Oasis Cropping Laboratory, Institute of Arid Lands, Medenine 4119, Tunisia;
| | - Karim Kadri
- Biotechnology and Genetic Resources Laboratory, Regional Centre for Research in Oasis Agriculture, BO 62, Degueche 2260, Tunisia;
- Laboratory of Biotechnology Applied to Agriculture, National Institute for Agronomic Research of Tunis, University of Carthage Tunis, Ariana 2049, Tunisia
| | - Amel Sellemi
- Laboratory for In Vitro Tissue Culture, Regional Centre for Research in Oasis Agriculture, Tozeur Km1, Degueche 2260, Tunisia; (A.O.); (A.S.)
| | - Leen Leus
- Plant Sciences Unit, Flanders Research Institute for Agriculture, Fisheries and Food (ILVO), Caritasstraat 39, 9090 Melle, Belgium;
| | - Stefaan P. O. Werbrouck
- Department of Plant & Crops, Faculty of Bioscience Engineering, Ghent University, Valentin Vaerwyckweg 1, 9000 Ghent, Belgium
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Grira M, Prinsen E, Werbrouck SPO. The Effect of Topophysis on the In Vitro Development of Handroanthus guayacan and on Its Metabolism of Meta-Topolin Riboside. Plants (Basel) 2023; 12:3577. [PMID: 37896040 PMCID: PMC10610141 DOI: 10.3390/plants12203577] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Revised: 10/12/2023] [Accepted: 10/13/2023] [Indexed: 10/29/2023]
Abstract
An important factor affecting the uniformity of in vitro cultures is the topophysical position of the original explant. We investigated this phenomenon in Handroanthus guayacan, a tropical woody tree species. Shoots from a stock culture were separated into upper, middle and basal sections and transferred to a modified MS medium containing meta-topolin-riboside and indole-butyric acid. After 8 weeks, the middle section produced the most shoots, the longest shoots and the highest number of nodes per plant. Shoots derived from the upper section were elongated, but had the shortest internodes, while those from the basal section formed the largest callus. None of the three types of explants rooted during the proliferation phase. The topophysically dependent spatial distribution of endogenous cytokinins and auxins was determined. The topophysical effect observed could not be explained solely by analyzing the endogenous isoprenoid and auxin. However, the metabolism and distribution of the aromatic cytokinin could provide an explanation. The concentration of the meta hydroxy-substituted topolins was highest in shoots derived from the middle section. Aromatic N- and O-glucosides were much more concentrated in the leaves than in the stems. In conclusion, it is recommended to consider the explant's topophysis when developing a multiplication protocol to avoid heterogeneity in an in vitro culture.
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Affiliation(s)
- Maroua Grira
- Laboratory for Applied In Vitro Plant Biotechnology, Ghent University, Valentin Vaerwyckweg 1, 9000 Ghent, Belgium
| | - Els Prinsen
- Integrated Molecular Plant Physiology Research, Dement of Biology, University of Antwerp, Groenenborgerlaan 170, 2020 Antwerp, Belgium
| | - Stefaan P. O. Werbrouck
- Laboratory for Applied In Vitro Plant Biotechnology, Ghent University, Valentin Vaerwyckweg 1, 9000 Ghent, Belgium
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Abdouli D, Soufi S, Bettaieb T, Werbrouck SPO. Effects of Monochromatic Light on Growth and Quality of Pistacia vera L. Plants (Basel) 2023; 12:1546. [PMID: 37050172 PMCID: PMC10096592 DOI: 10.3390/plants12071546] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/11/2023] [Revised: 03/31/2023] [Accepted: 04/02/2023] [Indexed: 06/19/2023]
Abstract
Light-emitting diodes (LEDs) are popular as a light source for in vitro plants because they save energy and allow the morphology of the plant to be altered. The purpose of this study was to show that switching from classical fluorescent light (FL) to LED light can have both beneficial and adverse effects. Pistacia vera plantlets were exposed to FL, monochromatic Blue LED light (B), monochromatic Red LED light (R), and a 1:1 mixture of both B and R (BR). R increased the total weight, shoot length, number of shoots ≥ 1 cm, and proliferation. It also reduced hyperhydricity (HH), but also dramatically increased shoot tip necrosis (STN) and leaf necrosis (LN). B cured plants of HH and STN, but hardly enabled proliferation. It did not solve the problem of LN, but the plants were high in total chlorophyll and carotenoids. BR reduced HH but enabled limited proliferation, high STN, and LN. All three LED treatments reduced HH compared to FL. B induced both high total phenolic and flavonoid content and high DPPH-scavenging activity. These results show that switching from FL to LED can have a significant positive or negative effect on proliferation and quality. This suggests that finding an optimal lighting regimen will take a lot of trial and error.
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Affiliation(s)
- Dhekra Abdouli
- Laboratory for Applied In Vitro Plant Biotechnology, Ghent University, Valentin Vaerwyckweg 1, 9000 Ghent, Belgium
- Laboratory of Horticultural Sciences, National Agronomic Institute of Tunisia, University of Carthage, 43 Av. Charles Nicolle, Tunis 1082, Tunisia
| | - Sihem Soufi
- Laboratory of Horticultural Sciences, National Agronomic Institute of Tunisia, University of Carthage, 43 Av. Charles Nicolle, Tunis 1082, Tunisia
| | - Taoufik Bettaieb
- Laboratory of Horticultural Sciences, National Agronomic Institute of Tunisia, University of Carthage, 43 Av. Charles Nicolle, Tunis 1082, Tunisia
| | - Stefaan P. O. Werbrouck
- Laboratory for Applied In Vitro Plant Biotechnology, Ghent University, Valentin Vaerwyckweg 1, 9000 Ghent, Belgium
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Rabaaoui A, Masiello M, Somma S, Crudo F, Dall’Asta C, Righetti L, Susca A, Logrieco AF, Namsi A, Gdoura R, Werbrouck SPO, Moretti A. Phylogeny and mycotoxin profiles of pathogenic Alternaria and Curvularia species isolated from date palm in southern Tunisia. Front Microbiol 2022; 13:1034658. [DOI: 10.3389/fmicb.2022.1034658] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2022] [Accepted: 10/10/2022] [Indexed: 11/09/2022] Open
Abstract
Date palm (Phoenix dactylifera L.), is a widely cultivated crop across North Africa, with about 300 thousand tons of fruits produced per year, in Tunisia. A wide range of fungal pathogens has been associated with leaf spots of date palm, Alternaria species being the most frequently reported. Symptomatic leaves of Deglet Nour variety were randomly collected in six localities in Tunisia. We used a polyphasic approach to identify 45 Alternaria and five Curvularia strains isolated from date palm, confirming their pathogenicity. Sequencing of allergen Alt-a1, glyceraldehyde-3-phosphate dehydrogenase (gpd) and calmodulin genes allowed us to group 35 strains in Alternaria Section, and 10 strains in Ulocladioides section. Based on sequencing analyses of Internal Transcribed Spacer, gpd and elongation factor genomic regions, all Curvularia strains were identified as Curvularia spicifera. All Alternaria and Curvularia species tested on date palm plantlets proved to be pathogenic, fulfilling Koch’s postulates. Although no significant differences were observed among the species, the highest mean disease severity index was observed in A. arborescens, while the lowest corresponded to C. spicifera. The capability of these strains to produce mycotoxins in vitro was evaluated. None of the A. consortialis strains produced any known Alternaria mycotoxin, whereas more than 80% of the strains included in Alternaria section Alternaria produced variable amounts of multiple mycotoxins such as alternariol, alternariol monomethyl ether, altenuene, tenuazonic acid and tentoxin. Curvularia spicifera strains produced detectable traces of fumonisins B. This work reports a first comprehensive multidisciplinary study of mycotoxigenic Alternaria species and C. spicifera associated with leaf spot disease on date palm.
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Abdouli D, Plačková L, Doležal K, Bettaieb T, Werbrouck SPO. Topolin cytokinins enhanced shoot proliferation, reduced hyperhydricity and altered cytokinin metabolism in Pistacia vera L. seedling explants. Plant Sci 2022; 322:111360. [PMID: 35716901 DOI: 10.1016/j.plantsci.2022.111360] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Revised: 06/06/2022] [Accepted: 06/13/2022] [Indexed: 06/15/2023]
Abstract
The effect of 10 µM meta-topolin (mT) and meta-topolin riboside (mTR) on in vitro proliferation and anomalies of Pistacia vera L. were evaluated and compared to that of 6-benzylaminopurine (BA). The highest proliferation rate (15.6) was recorded in the mT-medium, with a value 6 times higher than in BA-medium. Moreover, the lowest percentage of hyperhydric usable shoots (58,9%) and callus weight (46,9%) were found in mTR-treated shoots. Shoot tip as well as leaf necrosis were not influenced by cytokinin (CK) type. Image analysis was used to evaluate photosynthetic efficiency as well as anthocyanin index. Photosynthesis was more efficient with BA and mTR but the higher anthocyanin accumulation in BA-treated shoots suggests more stress. Endogenous CKs and their metabolites were determined in seedlings and, for the first time, the metabolism of exogenous BA, mT and mTR was studied in pistachio. The stimulating effect on cis-zeatin and its riboside and the appearance of BA and traces of ortho-topolin and para-topolin as natural CKs are discussed. The quantitative and qualitative CK metabolite analyses provides some initial clues as to why topolin would be superior to BA in terms of proliferation rate and avoiding hyperhydricity and allowed a better understanding of the effect of exogenous administration of CK.
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Affiliation(s)
- Dhekra Abdouli
- Laboratory for Applied In Vitro Plant Biotechnology, University Ghent, Valentin Vaerwyckweg 1, 9000 Ghent, Belgium; Laboratory of Horticultural Sciences, University of Carthage, National Agronomic Institute of Tunisia, 43 Av. Charles Nicolle, 1082 Tunis, Tunisia
| | - Lenka Plačková
- Laboratory of Growth Regulators, Palackỳ University and Institute of Experimental Botany, AS CR, Šlechtitelů 11, 783 71 Olomouc, Czech Republic
| | - Karel Doležal
- Laboratory of Growth Regulators, Palackỳ University and Institute of Experimental Botany, AS CR, Šlechtitelů 11, 783 71 Olomouc, Czech Republic; Department of Chemical Biology, Faculty of Science, Palacký University, Šlechtitelů 27, CZ-78371 Olomouc, Czech Republic
| | - Taoufik Bettaieb
- Laboratory of Horticultural Sciences, University of Carthage, National Agronomic Institute of Tunisia, 43 Av. Charles Nicolle, 1082 Tunis, Tunisia
| | - Stefaan P O Werbrouck
- Laboratory for Applied In Vitro Plant Biotechnology, University Ghent, Valentin Vaerwyckweg 1, 9000 Ghent, Belgium.
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Nisler J, Pěkná Z, Končitíková R, Klimeš P, Kadlecová A, Murvanidze N, Werbrouck SPO, Plačková L, Kopečný D, Zalabák D, Spíchal L, Strnad M. Cytokinin oxidase/dehydrogenase inhibitors: outlook for selectivity and high efficiency. J Exp Bot 2022; 73:4806-4817. [PMID: 35522987 DOI: 10.1093/jxb/erac201] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/23/2021] [Accepted: 05/05/2022] [Indexed: 06/14/2023]
Abstract
Inhibitors of cytokinin oxidase/dehydrogenase (CKX) reduce the degradation of cytokinins in plants, and this effect can be exploited in agriculture and in plant tissue culture. In this study, we examine the structure-activity relationship of two series of CKX inhibitors based on diphenylurea. The compounds of Series I were derived from the recently published CKX inhibitors 3TFM-2HM and 3TFM-2HE, and we identified key substituents with increased selectivity for maize ZmCKX1 and ZmCKX4a over AtCKX2 from Arabidopsis. Series II contained compounds that further exceled in CKX inhibitory activity as well as in the ease of their synthesis. The best inhibitors exhibited half-maximal inhibitory concentration (IC50) values in low nanomolar ranges with ZmCKX1 and especially with ZmCKX4a, which is generally more resistant to inhibition. The activity of the key compounds was verified in tobacco and lobelia leaf-disk assays, where N6-isopentenyladenine was protected from degradation and promoted shoot regeneration. All the prepared compounds were further tested for toxicity against Caenorhabditis elegans, and the assays revealed clear differences in toxicity between compounds with and without a hydroxyalkyl group. In a broader perspective, this work increases our understanding of CKX inhibition and provides a more extensive portfolio of compounds suitable for agricultural and biotechnological research.
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Affiliation(s)
- Jaroslav Nisler
- Isotope Laboratory, Institute of Experimental Botany, The Czech Academy of Sciences, Vídeňská 1083, 142 20 Prague, Czech Republic
- Centre of the Region Haná for Biotechnological and Agricultural Research, Czech Advanced Technology and Research Institute (CATRIN), Palacký University Olomouc, Šlechtitelů 27, Olomouc CZ-783 71, Czech Republic
| | - Zuzana Pěkná
- Centre of the Region Haná for Biotechnological and Agricultural Research, Czech Advanced Technology and Research Institute (CATRIN), Palacký University Olomouc, Šlechtitelů 27, Olomouc CZ-783 71, Czech Republic
| | - Radka Končitíková
- Department of Experimental Biology, Faculty of Science, Palacký University, Šlechtitelů 27, CZ-78371, Olomouc, Czech Republic
| | - Pavel Klimeš
- Centre of the Region Haná for Biotechnological and Agricultural Research, Czech Advanced Technology and Research Institute (CATRIN), Palacký University Olomouc, Šlechtitelů 27, Olomouc CZ-783 71, Czech Republic
| | - Alena Kadlecová
- Department of Experimental Biology, Faculty of Science, Palacký University, Šlechtitelů 27, CZ-78371, Olomouc, Czech Republic
| | - Nino Murvanidze
- Department Plants and Crops, Faculty of Bioscience Engineering, Ghent University, Ghent, Belgium
| | - Stefaan P O Werbrouck
- Department Plants and Crops, Faculty of Bioscience Engineering, Ghent University, Ghent, Belgium
| | - Lenka Plačková
- Laboratory of Growth Regulators, Institute of Experimental Botany of the Czech Academy of Sciences & Palacký University, Šlechtitelů 27, CZ-783 71 Olomouc, Czech Republic
| | - David Kopečný
- Department of Experimental Biology, Faculty of Science, Palacký University, Šlechtitelů 27, CZ-78371, Olomouc, Czech Republic
| | - David Zalabák
- Laboratory of Growth Regulators, Institute of Experimental Botany of the Czech Academy of Sciences & Palacký University, Šlechtitelů 27, CZ-783 71 Olomouc, Czech Republic
| | - Lukáš Spíchal
- Centre of the Region Haná for Biotechnological and Agricultural Research, Czech Advanced Technology and Research Institute (CATRIN), Palacký University Olomouc, Šlechtitelů 27, Olomouc CZ-783 71, Czech Republic
| | - Miroslav Strnad
- Laboratory of Growth Regulators, Institute of Experimental Botany of the Czech Academy of Sciences & Palacký University, Šlechtitelů 27, CZ-783 71 Olomouc, Czech Republic
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Ogunsanya HY, Motti P, Li J, Trinh HK, Xu L, Bernaert N, Van Droogenbroeck B, Murvanidze N, Werbrouck SPO, Mangelinckx S, Ramirez A, Geelen D. Belgian endive-derived biostimulants promote shoot and root growth in vitro. Sci Rep 2022; 12:8792. [PMID: 35614331 PMCID: PMC9132888 DOI: 10.1038/s41598-022-12815-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Accepted: 05/09/2022] [Indexed: 12/21/2022] Open
Abstract
Recovering biostimulant compounds from by-products of crops is a promising strategy to add value, enhance sustainability, and increase the environmental safety of the agricultural production chain. Here, we report consistent root and shoot growth-stimulating bioactivity present in water-based extracts from Belgian endive forced roots (Cichorium intybus var. foliosum) over two consecutive harvest years. The shoot and the primary root of in vitro cultivated Arabidopsis thaliana treated with Belgian endive extract were about 30% increased in size compared to plants grown under control conditions. The ornamental species Plectranthus esculentus also showed enhanced in vitro shoot and root growth, suggesting bioactivity on a broad range of species. Fractionation of the Belgian endive extracts into aqueous and organic subfractions coupled with bioactivity measurements showed that the principal root and shoot growth-promoting ingredients are primarily water-soluble. NMR-based characterization of the bioactive aqueous fractions revealed the presence of predominantly sugars and organic acids. Malate and sugars were abundant and common to all water fractions, suggesting these molecules contributed to the growth stimulation phenotype. The findings indicate that Belgian endive roots are a source for the development of organic waste-derived biostimulants with potential for application in tissue culture and putatively for soil-grown crop production.
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Affiliation(s)
- Halimat Yewande Ogunsanya
- Department of Plants and Crops - Unit HortiCell, Ghent University, Faculty of Bioscience Engineering, Coupure Links 653, 9000, Ghent, Belgium
| | - Pierfrancesco Motti
- Department of Green Chemistry and Technology - SynBioC research group, Ghent University, Faculty of Bioscience Engineering, Coupure Links 653, 9000, Ghent, Belgium
| | - Jing Li
- Department of Plants and Crops - Unit HortiCell, Ghent University, Faculty of Bioscience Engineering, Coupure Links 653, 9000, Ghent, Belgium
| | - Hoang Khai Trinh
- Department of Plants and Crops - Unit HortiCell, Ghent University, Faculty of Bioscience Engineering, Coupure Links 653, 9000, Ghent, Belgium
- Biotechnology Research and Development Institute, Can Tho University, Can Tho City, 900000, Vietnam
| | - Lin Xu
- Department of Plants and Crops - Unit HortiCell, Ghent University, Faculty of Bioscience Engineering, Coupure Links 653, 9000, Ghent, Belgium
- Department of Food Technology, Safety and Health, Ghent University, Faculty of Bioscience Engineering, Gr.Karel de Goedelaan 34, Geb.G, 8500, Kortrijk, Belgium
| | - Nathalie Bernaert
- Flanders Research Institute for Agriculture, Fisheries and Food, 9090, Melle, Belgium
| | | | - Nino Murvanidze
- Department of Plants and Crops - Laboratory for Applied In Vitro Plant Biotechnology, Ghent University, Faculty of Bioscience Engineering, Valentin Vaerwyckweg 1, 9000, Ghent, Belgium
| | - Stefaan P O Werbrouck
- Department of Plants and Crops - Laboratory for Applied In Vitro Plant Biotechnology, Ghent University, Faculty of Bioscience Engineering, Valentin Vaerwyckweg 1, 9000, Ghent, Belgium
| | - Sven Mangelinckx
- Department of Green Chemistry and Technology - SynBioC research group, Ghent University, Faculty of Bioscience Engineering, Coupure Links 653, 9000, Ghent, Belgium
| | - Aldana Ramirez
- Department of Plants and Crops - Unit HortiCell, Ghent University, Faculty of Bioscience Engineering, Coupure Links 653, 9000, Ghent, Belgium
| | - Danny Geelen
- Department of Plants and Crops - Unit HortiCell, Ghent University, Faculty of Bioscience Engineering, Coupure Links 653, 9000, Ghent, Belgium.
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Dushimimana C, Sakha MA, Korir MJ, Jefwa JM, Vandenabeele J, Magomere T, Mutitu EW, Mulatya J, Olubayo F, Smagghe G, Werbrouck SPO. Early Growth Performance of In Vitro Raised Melia volkensii Gürke Plantlets in Response to Beneficial Microorganisms under Semi-Arid Conditions. Plants (Basel) 2022; 11:1300. [PMID: 35631725 PMCID: PMC9145849 DOI: 10.3390/plants11101300] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/19/2022] [Revised: 05/06/2022] [Accepted: 05/10/2022] [Indexed: 06/15/2023]
Abstract
Before in vitro propagated Melia volkensii plants can be used for mass planting, the transition phase to in vivo conditions needs to be better controlled because too many plants are lost during acclimatization and in the field. Two experiments were set up to evaluate the effects of biological agents on the establishment of M. volkensii in vitro plantlets. The biological agents consisted of Trichotech®, Bio-cure B®, Rhizatech®, Bacillus subtilis, a Trichoderma isolate and self-isolated native arbuscular mycorrhizal fungi (AMF). Regarding the latter, in soil from the nursery, the number of AMF spores increased from six spores to 400 per 100 g of soil using a trap culture, in which thirteen AMF morphotypes were identified and root colonization assessed through observation of hyphae, vesicles, coils and appressoria. The first experiment was set up in the greenhouse to investigate the efficacy of the biological agents on the hardening off. In the second, a field experiment was set up to study their effect on the early establishment of the plantlets in the field compared to seedlings. All biological agents significantly (p ≤ 0.05) improved in vitro plant survival and growth compared to the control. The highest plant height and number of leaves per plant were recorded in plants treated with Rhizatech®, Native AMF, Bio-cure B® and Trichoderma isolate. The treatments with Rhizatech®, Bio-cure B® and native mycorrhiza recorded a significantly wider stem. The root diameter of the plants treated with Rhizatech® and Bio-cure B® was the largest, but the plants inoculated with the native AMF had the longest roots. Moreover, the inoculated plants generally developed multiple secondary roots. After two months, AMF had clearly colonized the acclimatized plantlets. In the field experiment, the biologicals made no difference in survival rate but did produce a significantly larger leaf area after two months, with the largest leaves recorded with Rhizatech®, native AMF and Trichotech®. They also increased the quality index of the plants from 0.21 to 0.52. The performance of in vitro grown M. volkensii plants six months after planting in semi-arid conditions in Kiambere was better than that of seedlings. Inoculation of plants increased plant height and diameter. Thus, inoculation of biological agents is an efficient approach for improving the early growth of in vitro propagated M. volkensii plants.
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Affiliation(s)
- Constantin Dushimimana
- Department of Plants and Crops, Faculty of Bioscience Engineering, Ghent University, Coupure Links 653 and Valentin Vaerwyckweg 1, B-9000 Ghent, Belgium;
- Department of Plant Science and Crop Protection, University of Nairobi, Kangemi, Nairobi P.O. Box 29053-00625, Kenya; (T.M.); (E.W.M.); (F.O.)
| | - Michael Ajanja Sakha
- Mycology Laboratory, Botany Department, National Museums of Kenya, Nairobi P.O. Box 40658-00100, Kenya; (M.A.S.); (M.J.K.); (J.M.J.)
| | - Mercy Jebiwott Korir
- Mycology Laboratory, Botany Department, National Museums of Kenya, Nairobi P.O. Box 40658-00100, Kenya; (M.A.S.); (M.J.K.); (J.M.J.)
| | - Joyce Mnyazi Jefwa
- Mycology Laboratory, Botany Department, National Museums of Kenya, Nairobi P.O. Box 40658-00100, Kenya; (M.A.S.); (M.J.K.); (J.M.J.)
| | | | - Titus Magomere
- Department of Plant Science and Crop Protection, University of Nairobi, Kangemi, Nairobi P.O. Box 29053-00625, Kenya; (T.M.); (E.W.M.); (F.O.)
| | - Eunice Wanjiru Mutitu
- Department of Plant Science and Crop Protection, University of Nairobi, Kangemi, Nairobi P.O. Box 29053-00625, Kenya; (T.M.); (E.W.M.); (F.O.)
| | - Jackson Mulatya
- Kenya Forestry Research Institute, Nairobi P.O. Box 20412-00200, Kenya;
| | - Florence Olubayo
- Department of Plant Science and Crop Protection, University of Nairobi, Kangemi, Nairobi P.O. Box 29053-00625, Kenya; (T.M.); (E.W.M.); (F.O.)
| | - Guy Smagghe
- Department of Plants and Crops, Faculty of Bioscience Engineering, Ghent University, Coupure Links 653 and Valentin Vaerwyckweg 1, B-9000 Ghent, Belgium;
| | - Stefaan P. O. Werbrouck
- Department of Plants and Crops, Faculty of Bioscience Engineering, Ghent University, Coupure Links 653 and Valentin Vaerwyckweg 1, B-9000 Ghent, Belgium;
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Rabaaoui A, Dall’Asta C, Righetti L, Susca A, Logrieco AF, Namsi A, Gdoura R, Werbrouck SPO, Moretti A, Masiello M. Phylogeny and Mycotoxin Profile of Pathogenic Fusarium Species Isolated from Sudden Decline Syndrome and Leaf Wilt Symptoms on Date Palms ( Phoenix dactylifera) in Tunisia. Toxins (Basel) 2021; 13:toxins13070463. [PMID: 34209422 PMCID: PMC8310299 DOI: 10.3390/toxins13070463] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2021] [Revised: 06/20/2021] [Accepted: 06/29/2021] [Indexed: 11/16/2022] Open
Abstract
In 2017–2018, extensive symptoms of sudden decline and fruit rot were observed on date palms in southern Tunisia. Samples of diseased plants were randomly collected in six localities. Based on morphological identification, Fusarium was the most frequent fungal genus detected. A sequencing of translation elongation factor, calmodulin, and second largest subunit of RNA polymerase II genes was used to identify 63 representative Fusarium strains at species level and investigate their phylogenetic relationships. The main species detected was Fusarium proliferatum, and at a much lesser extent, Fusarium brachygibbosum, Fusarium caatingaense, Fusarium clavum, Fusarium incarnatum, and Fusarium solani. Pathogenicity on the Deglet Nour variety plantlets and the capability to produce mycotoxins were also assessed. All Fusarium species were pathogenic complying Koch’s postulates. Fusarium proliferatum strains produced mainly fumonisins (FBs), beauvericin (BEA), and, to a lesser extent, enniatins (ENNs) and moniliformin (MON). All F. brachygibbosum strains produced low levels of BEA, diacetoxyscirpenol, and neosolaniol; two strains produced also T-2 toxin, and a single strain produced HT-2 toxin. Fusarium caatingaense, F. clavum, F. incarnatum produced only BEA. Fusarium solani strains produced MON, BEA, and ENNs. This work reports for the first time a comprehensive multidisciplinary study of Fusarium species on date palms, concerning both phytopathological and food safety issues.
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Affiliation(s)
- Amal Rabaaoui
- Department of Plants and Crops, Faculty of Bioscience Engineering, Ghent University, 9000 Ghent, Belgium; (A.R.); (S.P.O.W.)
- Laboratory of Toxicology-Microbiology and Environmental Health, Department of Biology, University Sfax, Sfax 3000, Tunisia;
| | - Chiara Dall’Asta
- Department of Food and Drug, University of Parma, Area delle Scienze 27/A, 43124 Parma, Italy; (C.D.); (L.R.)
| | - Laura Righetti
- Department of Food and Drug, University of Parma, Area delle Scienze 27/A, 43124 Parma, Italy; (C.D.); (L.R.)
| | - Antonia Susca
- National Research Council of Italy, Institute of Sciences of Food Production, CNR-ISPA, Via Amendola 122/O, 70126 Bari, Italy; (A.S.); (A.F.L.); (M.M.)
| | - Antonio Francesco Logrieco
- National Research Council of Italy, Institute of Sciences of Food Production, CNR-ISPA, Via Amendola 122/O, 70126 Bari, Italy; (A.S.); (A.F.L.); (M.M.)
| | - Ahmed Namsi
- Laboratoire de Phytopathologie, Centre Régional de Recherches en Agriculture Oasienne, Degache 2260, Tunisia;
| | - Radhouane Gdoura
- Laboratory of Toxicology-Microbiology and Environmental Health, Department of Biology, University Sfax, Sfax 3000, Tunisia;
| | - Stefaan P. O. Werbrouck
- Department of Plants and Crops, Faculty of Bioscience Engineering, Ghent University, 9000 Ghent, Belgium; (A.R.); (S.P.O.W.)
| | - Antonio Moretti
- National Research Council of Italy, Institute of Sciences of Food Production, CNR-ISPA, Via Amendola 122/O, 70126 Bari, Italy; (A.S.); (A.F.L.); (M.M.)
- Correspondence:
| | - Mario Masiello
- National Research Council of Italy, Institute of Sciences of Food Production, CNR-ISPA, Via Amendola 122/O, 70126 Bari, Italy; (A.S.); (A.F.L.); (M.M.)
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Nisler J, Kopečný D, Pěkná Z, Končitíková R, Koprna R, Murvanidze N, Werbrouck SPO, Havlíček L, De Diego N, Kopečná M, Wimmer Z, Briozzo P, Moréra S, Zalabák D, Spíchal L, Strnad M. Diphenylurea-derived cytokinin oxidase/dehydrogenase inhibitors for biotechnology and agriculture. J Exp Bot 2021; 72:355-370. [PMID: 32945834 DOI: 10.1093/jxb/eraa437] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/04/2020] [Accepted: 09/17/2020] [Indexed: 05/11/2023]
Abstract
Increasing crop productivity is our major challenge if we are to meet global needs for food, fodder and fuel. Controlling the content of the plant hormone cytokinin is a method of improving plant productivity. Cytokinin oxidase/dehydrogenase (CKO/CKX) is a major target in this regard because it degrades cytokinins. Here, we describe the synthesis and biological activities of new CKX inhibitors derived mainly from diphenylurea. They were tested on four CKX isoforms from maize and Arabidopsis, where the best compounds showed IC50 values in the 10-8 M concentration range. The binding mode of the most efficient inhibitors was characterized from high-resolution crystal complexed structures. Although these compounds do not possess intrinsic cytokinin activity, we have demonstrated their tremendous potential for use in the plant tissue culture industry as well as in agriculture. We have identified a key substance, compound 19, which not only increases stress resistance and seed yield in Arabidopsis, but also improves the yield of wheat, barley and rapeseed grains under field conditions. Our findings reveal that modulation of cytokinin levels via CKX inhibition can positively affect plant growth, development and yield, and prove that CKX inhibitors can be an attractive target in plant biotechnology and agriculture.
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Affiliation(s)
- Jaroslav Nisler
- Laboratory of Growth Regulators, Institute of Experimental Botany of the Czech Academy of Sciences & Palacký University, Šlechtitelů 27, Olomouc, Czech Republic
- Department of Chemistry of Natural Compounds, Faculty of Food and Biochemical Technology, University of Chemistry and Technology in Prague, Technická 5, Prague, Czech Republic
- Department of Chemical Biology and Genetics, Centre of the Region Haná for Biotechnological and Agricultural Research, Faculty of Science, Palacký University, Šlechtitelů 27, Olomouc, Czech Republic
| | - David Kopečný
- Department of Protein Biochemistry and Proteomics, Centre of the Region Haná for Biotechnological and Agricultural Research, Faculty of Science, Palacký University, Šlechtitelů 27, Olomouc, Czech Republic
| | - Zuzana Pěkná
- Department of Chemical Biology and Genetics, Centre of the Region Haná for Biotechnological and Agricultural Research, Faculty of Science, Palacký University, Šlechtitelů 27, Olomouc, Czech Republic
| | - Radka Končitíková
- Department of Protein Biochemistry and Proteomics, Centre of the Region Haná for Biotechnological and Agricultural Research, Faculty of Science, Palacký University, Šlechtitelů 27, Olomouc, Czech Republic
| | - Radoslav Koprna
- Department of Chemical Biology and Genetics, Centre of the Region Haná for Biotechnological and Agricultural Research, Faculty of Science, Palacký University, Šlechtitelů 27, Olomouc, Czech Republic
| | - Nino Murvanidze
- Department Plants and Crops, Faculty of Bioscience Engineering, Ghent University, Ghent, Belgium
| | - Stefaan P O Werbrouck
- Department Plants and Crops, Faculty of Bioscience Engineering, Ghent University, Ghent, Belgium
| | - Libor Havlíček
- Isotope Laboratory, Institute of Experimental Botany, The Czech Academy of Sciences, Vídeňská 1083, 142 20 Prague, Czech Republic
| | - Nuria De Diego
- Department of Chemical Biology and Genetics, Centre of the Region Haná for Biotechnological and Agricultural Research, Faculty of Science, Palacký University, Šlechtitelů 27, Olomouc, Czech Republic
| | - Martina Kopečná
- Department of Protein Biochemistry and Proteomics, Centre of the Region Haná for Biotechnological and Agricultural Research, Faculty of Science, Palacký University, Šlechtitelů 27, Olomouc, Czech Republic
| | - Zdeněk Wimmer
- Department of Chemistry of Natural Compounds, Faculty of Food and Biochemical Technology, University of Chemistry and Technology in Prague, Technická 5, Prague, Czech Republic
- Isotope Laboratory, Institute of Experimental Botany, The Czech Academy of Sciences, Vídeňská 1083, 142 20 Prague, Czech Republic
| | - Pierre Briozzo
- Institut Jean-Pierre Bourgin, INRAE, AgroParisTech, Université Paris-Saclay, Route de Saint-Cyr, Versailles, France
| | - Solange Moréra
- Institute for Integrative Biology of the Cell (I2BC), CEA, CNRS, Université Paris-Saclay, Gif-sur-Yvette, France
| | - David Zalabák
- Department of Molecular Biology, Centre of the Region Haná for Biotechnological and Agricultural Research, Faculty of Science, Palacký University, Šlechtitelů 27, Olomouc, Czech Republic
| | - Lukáš Spíchal
- Department of Chemical Biology and Genetics, Centre of the Region Haná for Biotechnological and Agricultural Research, Faculty of Science, Palacký University, Šlechtitelů 27, Olomouc, Czech Republic
| | - Miroslav Strnad
- Laboratory of Growth Regulators, Institute of Experimental Botany of the Czech Academy of Sciences & Palacký University, Šlechtitelů 27, Olomouc, Czech Republic
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Namsi A, Rabaoui A, Masiello M, Moretti A, Othmani A, Gargouri S, Gdoura R, Werbrouck SPO. First report of Leaf Wilt caused by Fusarium proliferatum and F. brachygibbosum on Date Palm ( Phoenix dactylifera) in Tunisia. Plant Dis 2020; 105:1217. [PMID: 33320045 DOI: 10.1094/pdis-08-20-1791-pdn] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Since 2017, a new leaf wilt syndrome was observed in plantations of date palm in Tunisia. Its incidence increases sharply from year to year, especially in 'Deglet Nour' trees, aged between 5 and 15 years. In severe cases, the large number of dried leaves per tree can lead to complete cessation of date production. Symptoms appear on one or more leaves in the center of the crown. Whitening and drying start at the top of the leaflets and proceed to their base, while the midrib remains green. Then the whole leaf dies. Small white-creamy leaflet fragments and roots were collected from five different regions in the Djerid Oases. They were disinfected with diluted bleach (0,8 % NaOCl) and ethanol (80%) (each 2 min), rinsed with sterile distilled water, dried and finally plated in Petri dishes containing Potato Dextrose Agar (PDA) amended with 50mg/l neomycin. After incubation for 7 days at 25ºC±2, emerging fungal colonies were single-spored by serial dilution. They were transferred to PDA, Carnation Leaf Agar (CLA) and Spezieller Nahrstoffarmer Agar (SNA) for morphological identification. Based on the colony color on PDA, conidial morphology and phialide structures on CLA and/or SNA, of the 85 Fusarium isolates, around 90% were identified as F. proliferatum and around 10% as F. brachygibbosum (Leslie and Summerell, 2006). Fusarium proliferatum colonies rapidly developed white aerial mycelium that became purple in old cultures. Microconidia were abundant in the aerial mycelium and formed chains of variable length, on monophialides and polyphialids, a characteristic that distinguishes F. proliferatum from F. verticilloides. Less often, they were observed in false heads. Chlamydospores were absent. On CLA, microconidia were mostly 2 × 15 µm in size, a large number of sickle shaped macroconidia (2 × 25 µm) had one septum, some were larger (2 × 50 µm) with 3 septa and tips at both ends. Molecular identification was carried out based on elongation factor (EF-1α) gene sequencing. The region between the EF1 and EF2 primers (O'Donnell et al., 1998) was amplified and the sequences were compared to Fusarium reference sequences (GenBank). The sequences of the isolates Fus 1953 (539 bp), Fus 1962 (618 bp), and Fus 1965 (605 bp) shared respectively 100%, 99.51% and 99.51% homology with that of F. proliferatum JF740713.1 and were deposited in GenBank with the following accession numbers: MT630418, MT630419, and MT630420, respectively. The sequences of isolates 7F, 28F, Fus 1955 and Fus 1956 shared 100 % homology with that of F. brachygibbosum (GQ505418.1) while those of Fus 1955 and Fus 1956 showed 99.02 and 98.91 % identity, respectively, with F. brachygibbosum JX118981.1. The sequences of 7F (535 bp), 28F (535 bp), Fus 1955 (608 bp), and Fus 1956 (647 bp) were deposited in GenBank with the following accession numbers: MT630409, MT630410, MT630411, and MT630412, respectively. Two ml suspension of 106 conidia / ml of each isolate was sprayed separately or in combinations on in vitro cloned 'Deglet Nour' plants, placed in a greenhouse at 28°±2 °C and 70% R.H.. Isolates of F. proliferatum led to dryness and wilting leaflets after 3 weeks. Fusarium brachygibbosum only induced mild leaf yellowing, while in combination they were more virulent. Fungal isolates of both species were re-isolated and their identity confirmed to be the same of those isolated from leaflets infected in the open field, confirming Koch's postulates. Control plants lacked symptoms. Fusarium proliferatum is known as date palm pathogen in many countries (Saleh et al. 2017), however, to our knowledge, this is the first report of F. proliferatum and also F. brachygibbosum causing Leaf Wilt symptoms on P. dactylifera in Tunisia.
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Affiliation(s)
- Ahmed Namsi
- Centre Régional de Recherches en Agriculture Oasienne, Laboratoire de Phytopathologie, Degache, Tunisia;
| | - Amal Rabaoui
- Centre Régional de Recherches en Agriculture Oasienne, Laboratoire de Phytopathologie, Degache, Tunisia;
| | - Mario Masiello
- Institute of Sciences of Food Production, CNR-ISPA, via Amendola 122/o, Bari, Bari, Italy, 70126
- National Research Council of Italy, via Amendola 122/o;
| | | | - Ahmed Othmani
- Centre Régionale de Recherches en Agriculture Oasienne, 201297, Laboratoire de Phytopathologie, Degache, Tunisia;
| | - Samia Gargouri
- University of Carthage, Plant Protection Laboratory, 2080 Ariana, INRAT, Rue Hedi Karray, Tunisia;
| | | | - Stefaan P O Werbrouck
- Universiteit Gent Faculteit Bio-Ingenieurswetenschappen, 98724, Plants and Crops, Val. Vaerwyckweg 1, Gent, Belgium, 9000;
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12
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Taheri S, Abdullah TL, Rafii MY, Harikrishna JA, Werbrouck SPO, Teo CH, Sahebi M, Azizi P. Author Correction: De novo assembly of transcriptomes, mining, and development of novel EST-SSR markers in Curcuma alismatifolia (Zingiberaceae family) through Illumina sequencing. Sci Rep 2019; 9:16395. [PMID: 31685940 PMCID: PMC6828682 DOI: 10.1038/s41598-019-53129-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Affiliation(s)
- Sima Taheri
- Department of Crop Science, Faculty of Agriculture, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia. .,Centre of Research in Biotechnology for Agriculture (CEBAR), University of Malaya, 50603, Kuala Lumpur, Malaysia.
| | - Thohirah Lee Abdullah
- Department of Crop Science, Faculty of Agriculture, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia.
| | - M Y Rafii
- Department of Crop Science, Faculty of Agriculture, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia.,Laboratory of Climate-Smart Food Crop Production, Institute of Tropical Agriculture and Food Security, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia
| | - Jennifer Ann Harikrishna
- Institute of Biological Sciences, Faculty of Science, University of Malaya, 50603, Kuala Lumpur, Malaysia.,Centre of Research in Biotechnology for Agriculture (CEBAR), University of Malaya, 50603, Kuala Lumpur, Malaysia
| | - Stefaan P O Werbrouck
- Laboratory of Applied Science In Vitro Plant Biotechnology, Department of Plants and Crops, Faculty of Bioscience Engineering, University Ghent, Valentin Vaerwyckweg 1, BE-9000, Gent, Belgium
| | - Chee How Teo
- Centre of Research in Biotechnology for Agriculture (CEBAR), University of Malaya, 50603, Kuala Lumpur, Malaysia
| | - Mahbod Sahebi
- Laboratory of Climate-Smart Food Crop Production, Institute of Tropical Agriculture and Food Security, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia
| | - Parisa Azizi
- Laboratory of Climate-Smart Food Crop Production, Institute of Tropical Agriculture and Food Security, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia
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Taheri S, Abdullah TL, Rafii MY, Harikrishna JA, Werbrouck SPO, Teo CH, Sahebi M, Azizi P. De novo assembly of transcriptomes, mining, and development of novel EST-SSR markers in Curcuma alismatifolia (Zingiberaceae family) through Illumina sequencing. Sci Rep 2019; 9:3047. [PMID: 30816255 PMCID: PMC6395698 DOI: 10.1038/s41598-019-39944-2] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2018] [Accepted: 02/06/2019] [Indexed: 11/24/2022] Open
Abstract
Curcuma alismatifolia widely used as an ornamental plant in Thailand and Cambodia. This species of herbaceous perennial from the Zingiberaceae family, includes cultivars with a wide range of colours and long postharvest life, and is used as an ornamental cut flower, as a potted plant, and in exterior landscapes. For further genetic improvement, however, little genomic information and no specific molecular markers are available. The present study used Illumina sequencing and de novo transcriptome assembly of two C. alismatifolia cvs, 'Chiang Mai Pink' and 'UB Snow 701', to develop simple sequence repeat markers for genetic diversity studies. After de novo assembly, 62,105 unigenes were generated and 48,813 (78.60%) showed significant similarities versus six functional protein databases. In addition, 9,351 expressed sequence tag-simple sequence repeats (EST-SSRs) were identified with a distribution frequency of 12.5% total unigenes. Out of 8,955 designed EST-SSR primers, 150 primers were selected for the development of potential molecular markers. Among these markers, 17 EST-SSR markers presented a moderate level of genetic diversity among three C. alismatifolia cultivars, one hybrid, three Curcuma, and two Zingiber species. Three different genetic groups within these species were revealed using EST-SSR markers, indicating that the markers developed in this study can be effectively applied to the population genetic analysis of Curcuma and Zingiber species. This report describes the first analysis of transcriptome data of an important ornamental ginger cultivars, also provides a valuable resource for gene discovery and marker development in the genus Curcuma.
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Affiliation(s)
- Sima Taheri
- Department of Crop Science, Faculty of Agriculture, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia.
- Centre of Research in Biotechnology for Agriculture (CEBAR), University of Malaya, 50603, Kuala Lumpur, Malaysia.
| | - Thohirah Lee Abdullah
- Department of Crop Science, Faculty of Agriculture, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia.
| | - M Y Rafii
- Department of Crop Science, Faculty of Agriculture, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia
- Laboratory of Climate-Smart Food Crop Production, Institute of Tropical Agriculture and Food Security, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia
| | - Jennifer Ann Harikrishna
- Institute of Biological Sciences, Faculty of Science, University of Malaya, 50603, Kuala Lumpur, Malaysia
- Centre of Research in Biotechnology for Agriculture (CEBAR), University of Malaya, 50603, Kuala Lumpur, Malaysia
| | - Stefaan P O Werbrouck
- Laboratory of Applied Science In Vitro Plant Biotechnology, Department of Plants and Crops, Faculty of Bioscience Engineering, University Ghent, Valentin Vaerwyckweg 1, BE-9000, Gent, Belgium
| | - Chee How Teo
- Centre of Research in Biotechnology for Agriculture (CEBAR), University of Malaya, 50603, Kuala Lumpur, Malaysia
| | - Mahbod Sahebi
- Laboratory of Climate-Smart Food Crop Production, Institute of Tropical Agriculture and Food Security, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia
| | - Parisa Azizi
- Laboratory of Climate-Smart Food Crop Production, Institute of Tropical Agriculture and Food Security, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia
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