Kalanchoe blossfeldiana plants expressing the Arabidopsis etr1-1 allele show reduced ethylene sensitivity

Research output: Contribution to journalArticleResearchpeer review

Authors

  • Mohsen Sanikhani
  • Heiko Mibus
  • Bjarne M. Stummann
  • Margrethe Serek

External Research Organisations

  • University of Copenhagen
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Details

Original languageEnglish
Pages (from-to)729-737
Number of pages9
JournalPlant cell reports
Volume27
Issue number4
Early online date14 Dec 2007
Publication statusPublished - Apr 2008

Abstract

Transgenic Kalanchoe blossfeldiana Poelln. with reduced ethylene sensitivity in flowers was obtained by Agrobacterium tumefaciens-mediated transformation using the plasmid pBEO210 containing the mutant ethylene receptor gene etr1-1 from Arabidopsis thaliana under the control of the flower-specific fbp1-promoter from Petunia. Three ethylene-resistent T0 lines, 300, 324 and 331, were selected and analyzed for postharvest-performance and morphological characteristics. Line 324 was found to be infertile and only slightly less ethylene-sensitive than control-plants, but lines 300 and 331 had significantly increased ethylene-resistance and were fertile. These two lines were analyzed for copy-number of the etr1-1 gene by Southern blotting and were crossed with the ethylene-sensitive cultivar 'Celine' to create T1 progeny. Line 300 contains two T-DNA copies per nucleus, one of which is rearranged, and these are unlinked according to segregation data from the crossing to 'Celine' and PCR-analysis of progeny plants. For control plants all flowers were closed after 2 days at 2 μl l-1 ethylene, but for line 300 only 33% were closed after 10 days. Line 331 contains three T-DNA copies per nucleus and is more sensitive to ethylene than line 300. In the line 300 the etr1-1 gene was found by RT-PCR to be expressed in petals and stamens but not in carpels and sepals. Both lines 300 and 331, and their progeny, appear morphologically and physiologically identical to control plants except for the higher ethylene resistance. Line 300 and its progeny with only one T-DNA copy have very low ethylene sensitivity and may be useful in future breeding.

Keywords

    Agrobacterium tumefaciens, etr1-1 gene, Flower longevity, Flower-specific fbp1-promoter, Kalanchoe blossfeldiana, Plasmid pBEO210

ASJC Scopus subject areas

Cite this

Kalanchoe blossfeldiana plants expressing the Arabidopsis etr1-1 allele show reduced ethylene sensitivity. / Sanikhani, Mohsen; Mibus, Heiko; Stummann, Bjarne M. et al.
In: Plant cell reports, Vol. 27, No. 4, 04.2008, p. 729-737.

Research output: Contribution to journalArticleResearchpeer review

Sanikhani M, Mibus H, Stummann BM, Serek M. Kalanchoe blossfeldiana plants expressing the Arabidopsis etr1-1 allele show reduced ethylene sensitivity. Plant cell reports. 2008 Apr;27(4):729-737. Epub 2007 Dec 14. doi: 10.1007/s00299-007-0493-6
Sanikhani, Mohsen ; Mibus, Heiko ; Stummann, Bjarne M. et al. / Kalanchoe blossfeldiana plants expressing the Arabidopsis etr1-1 allele show reduced ethylene sensitivity. In: Plant cell reports. 2008 ; Vol. 27, No. 4. pp. 729-737.
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title = "Kalanchoe blossfeldiana plants expressing the Arabidopsis etr1-1 allele show reduced ethylene sensitivity",
abstract = "Transgenic Kalanchoe blossfeldiana Poelln. with reduced ethylene sensitivity in flowers was obtained by Agrobacterium tumefaciens-mediated transformation using the plasmid pBEO210 containing the mutant ethylene receptor gene etr1-1 from Arabidopsis thaliana under the control of the flower-specific fbp1-promoter from Petunia. Three ethylene-resistent T0 lines, 300, 324 and 331, were selected and analyzed for postharvest-performance and morphological characteristics. Line 324 was found to be infertile and only slightly less ethylene-sensitive than control-plants, but lines 300 and 331 had significantly increased ethylene-resistance and were fertile. These two lines were analyzed for copy-number of the etr1-1 gene by Southern blotting and were crossed with the ethylene-sensitive cultivar 'Celine' to create T1 progeny. Line 300 contains two T-DNA copies per nucleus, one of which is rearranged, and these are unlinked according to segregation data from the crossing to 'Celine' and PCR-analysis of progeny plants. For control plants all flowers were closed after 2 days at 2 μl l-1 ethylene, but for line 300 only 33% were closed after 10 days. Line 331 contains three T-DNA copies per nucleus and is more sensitive to ethylene than line 300. In the line 300 the etr1-1 gene was found by RT-PCR to be expressed in petals and stamens but not in carpels and sepals. Both lines 300 and 331, and their progeny, appear morphologically and physiologically identical to control plants except for the higher ethylene resistance. Line 300 and its progeny with only one T-DNA copy have very low ethylene sensitivity and may be useful in future breeding.",
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note = "Funding Information: Acknowledgments This study was supported by the Iranian Ministry of Science, Research and Technology (Sanikhani), and the Danish Directorate for Food, Fisheries and Agri Business, grant no 3412-06-01545 (Mibus, Serek). The authors would like to thank Professor Gerco Angenent of Plant Research International, The Netherlands, for providing the Agrobacterium strain with plasmid pBEO210, Knud Jepsen A/S, Denmark, for providing plant material and segregation data, and Annette Steding at Leibniz University of Hannover for her excellent technical assistance.",
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AU - Stummann, Bjarne M.

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N1 - Funding Information: Acknowledgments This study was supported by the Iranian Ministry of Science, Research and Technology (Sanikhani), and the Danish Directorate for Food, Fisheries and Agri Business, grant no 3412-06-01545 (Mibus, Serek). The authors would like to thank Professor Gerco Angenent of Plant Research International, The Netherlands, for providing the Agrobacterium strain with plasmid pBEO210, Knud Jepsen A/S, Denmark, for providing plant material and segregation data, and Annette Steding at Leibniz University of Hannover for her excellent technical assistance.

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N2 - Transgenic Kalanchoe blossfeldiana Poelln. with reduced ethylene sensitivity in flowers was obtained by Agrobacterium tumefaciens-mediated transformation using the plasmid pBEO210 containing the mutant ethylene receptor gene etr1-1 from Arabidopsis thaliana under the control of the flower-specific fbp1-promoter from Petunia. Three ethylene-resistent T0 lines, 300, 324 and 331, were selected and analyzed for postharvest-performance and morphological characteristics. Line 324 was found to be infertile and only slightly less ethylene-sensitive than control-plants, but lines 300 and 331 had significantly increased ethylene-resistance and were fertile. These two lines were analyzed for copy-number of the etr1-1 gene by Southern blotting and were crossed with the ethylene-sensitive cultivar 'Celine' to create T1 progeny. Line 300 contains two T-DNA copies per nucleus, one of which is rearranged, and these are unlinked according to segregation data from the crossing to 'Celine' and PCR-analysis of progeny plants. For control plants all flowers were closed after 2 days at 2 μl l-1 ethylene, but for line 300 only 33% were closed after 10 days. Line 331 contains three T-DNA copies per nucleus and is more sensitive to ethylene than line 300. In the line 300 the etr1-1 gene was found by RT-PCR to be expressed in petals and stamens but not in carpels and sepals. Both lines 300 and 331, and their progeny, appear morphologically and physiologically identical to control plants except for the higher ethylene resistance. Line 300 and its progeny with only one T-DNA copy have very low ethylene sensitivity and may be useful in future breeding.

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