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A rise of ploidy level influences the rate of cytomixis in tobacco male meiosis

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Abstract

The effect of plant ploidy level on the rate of cytomixis in microsporogenesis has been analyzed with the help of a unique model, the collection of tobacco plants of different ploidies (2n = 2x = 24, 4x = 48, 6x = 72, and 8x = 96). As has been shown, the rate of cytomixis proportionally increases in 6x and 8x cytotypes, being rather similar in 2x and 4x plants. The rate of cytomixis is highly variable, differing even in the genetically identical plants grown under the same conditions. The cytological pattern of cytomixis in the microsporogenesis of control 4x plants has been compared with the corresponding patterns of 2x, 6x, and 8x plants. Involvement of cytomixis in production of unreduced gametes and stabilization of the newly formed hybrid and polyploidy genomes is discussed.

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Acknowledgments

The work was supported by the Russian Foundation for Basic Research (grant no. 14-04-31567 mol_a), Program of Siberian Branch of Russian Academy of Science “Fundamental bases of biotechnology creating therapies and diagnosis of diseases”, Theme VI.62.1.5. (0324-2014-0017), and the German Research Foundation, SFB 648 “Molecular mechanisms of information processing in plants”.

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Authors and Affiliations

  1. Institute of Cytology and Genetics, Siberian Branch, Russian Academy of Sciences, pr. Lavrentieva 10, Novosibirsk, 630090, Russia

    Sergey Mursalimov, Yuri Sidorchuk & Elena Deineko

  2. Leibniz Institute of Plant Genetics and Crop Plant Research (IPK) Gatersleben, Corrensstraße 3, 06466, Stadt Seeland, Germany

    Dmitri Demidov & Armin Meister

Authors
  1. Sergey Mursalimov
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  2. Yuri Sidorchuk
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  3. Dmitri Demidov
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  4. Armin Meister
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  5. Elena Deineko
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Correspondence to Sergey Mursalimov.

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Handling Editor: Heiti Paves

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Mursalimov, S., Sidorchuk, Y., Demidov, D. et al. A rise of ploidy level influences the rate of cytomixis in tobacco male meiosis. Protoplasma 253, 1583–1588 (2016). https://doi.org/10.1007/s00709-015-0907-1

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  • DOI: https://doi.org/10.1007/s00709-015-0907-1

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