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Type specification and spatial pattern formation of floral organs: A dynamic development model

  • Theoretical Biology
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Abstract

A mathematical model simulating spatial pattern formation (positioning) of floral organs is proposed. Computer experiment with this model demonstrated the following sequence of spatial pattern formation in a typical cruciferous flower: medial sepals, carpels, lateral sepals, long stamens, petals, and short stamens. The positioning was acropetal for the perianth organs and basipetal for the stamens and carpels. Organ type specification and positioning proceed non-simultaneously in different floral parts and organ type specification goes ahead of organ spatial pattern formation. Computer simulation of flower development in several mutants demonstrated that the AG and AP2 genes determine both organ type specification and formation of the zones for future organ development. The function of the AG gene is to determine the basipetal patterning zones for the development of the reproductive organs, while the AP2 gene maintains proliferative activity of the meristem establishing the acropetal patterning zone for the development of the perianth organs.

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Authors and Affiliations

  1. Center “Bioengineering”, Russian Academy of Sciences, prosp. 60-letiya Oktyabrya 7/1, Moscow, 117312, Russia

    K. G. Skryabin, V. B. Kudryavtsev, M. V. Nosov & O. A. Shul’ga

  2. Moscow State University, Vorob’evy gory, Moscow, 119992, Russia

    K. G. Skryabin, D. V. Alekseev, T. A. Ezhova, V. N. Kozlov, A. A. Penin, V. V. Choob & S. V. Shestakov

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  1. K. G. Skryabin
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  2. D. V. Alekseev
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  3. T. A. Ezhova
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  4. V. N. Kozlov
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  5. V. B. Kudryavtsev
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  6. M. V. Nosov
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  7. A. A. Penin
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  8. V. V. Choob
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  9. S. V. Shestakov
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  10. O. A. Shul’ga
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Additional information

Original Russian Text © K.G. Skryabin, D.V. Alekseev, T.A. Ezhova, V.N. Kozlov, V.B. Kudryavtsev, M.V. Nosov, A.A. Penin, V.V. Choob, S.V. Shestakov, O.A. Shul’ga, 2006, published in Izvestiya Akademii Nauk, Seriya Biologicheskaya, 2006, No. 6, pp. 645–659.

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Skryabin, K.G., Alekseev, D.V., Ezhova, T.A. et al. Type specification and spatial pattern formation of floral organs: A dynamic development model. Biol Bull Russ Acad Sci 33, 523–535 (2006). https://doi.org/10.1134/S106235900606001X

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  • DOI: https://doi.org/10.1134/S106235900606001X

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