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Micropropagation and Cryoconservation of the Endangered Plant Species Artemisia Laciniata (asteraceae)

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BACKGROUND: Artemisia laciniata, mainly distributed in Siberia and Central Asia, is classified as critically endangered in Europe. OBJECTIVES: This study developed a protocol for its micropropagation and cryopreservation. MATERIALS AND METHODS: In vitro cultures from fresh seed and in vivo shoots were initiated. Micropropagation and cryopreservation protocols were developed. Bacteria detected after cryopreservation were investigated using 16S rRNA analysis. Genome size measurements of regenerated plants after cryopreservation using flow cytometry and carbon isotope measurements to evaluate stress status were also carried out. RESULTS: A. laciniata from both starting materials could be successfully propagated on MS medium with 0.5 μM BAP. Material initiated from in vivo shoots yielded lower regeneration percentages (16%) after cryopreservation than material generated from seed (57 and 63%) using the droplet-vitrification method and PVS3. Bacteria occurring after cryopreservation belonged to the genera Sphingomonas, Staphylococcus, Curtobacterium and Gordonia. There was no significant difference in the genome size and stress status between non-cryopreserved and cryopreserved plants. CONCLUSION: A. laciniata could be readily micropropagated and cryopreserved. No negative effects of cryopreservation on plant water use efficiency or on genetic stability were found.
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Keywords: DROPLET VITRIFICATION; ENDOPHYTES; GSPC; LATENT INFECTIONS

Document Type: Research Article

Publication date: 01 May 2018

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  • CryoLetters is a bimonthly international journal for low temperature sciences, including cryobiology, cryopreservation or vitrification of cells and tissues, chemical and physical aspects of freezing and drying, and studies involving ecology of cold environments, and cold adaptation

    The journal publishes original research reports, authoritative reviews, technical developments and commissioned book reviews of studies of the effects produced by low temperatures on a wide variety of scientific and technical processes, or those involving low temperature techniques in the investigation of physical, chemical, biological and ecological problems.

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