The role of the photosynthetic apparatus in cold acclimation of Lolium multiflorum. Characteristics of novel genotypes low-sensitive to PSII over-reduction

• Autorzy: Rapacz M. , Gasior D. , Koscielniak J. , Kosmala A. , Zwierzykowski Z. , Humphreys M. W.
• Języki publikacji: EN

Abstrakty

EN

During cold acclimation by higher plants, temperature perception via changes in redox state of Photosystem II (PSII) and subsequent acclimation of the photosynthetic apparatus to cold is very important for achieving freezing tolerance. These properties were studied in two groups (A and B) of the same backcross 3 (BC₃) progeny derived from a triploid hybrid of Festuca pratensis (2×) × Lolium multiflorum (4×) backcrossed three times onto diploid L. multiflorum cultivars. Leaves of Group A plants formed at 20℃ at medium-low light were unable to acclimate their photosynthetic apparatus to cold. Compared to Group B, the Group A plants were also more frost sensitive. This acclimation ability correlated with the freezing tolerance of the plants. However, leaves of the same Group A plants developed at 20℃, but under higher-light conditions had increased ability to acclimate their photosynthetic apparatus to cold. It was concluded that Group A plants may have impaired PSII temperature perception, and this then resulted in their poor capability to cold acclimate.

• Wydawca: -
• Czasopismo: Acta Physiologiae Plantarum
• Rocznik: 2007
• Tom: 29
• Numer: 4
• Opis fizyczny: p.309-316,fig.,ref.

Twórcy

autor

Rapacz M.

• Department of Plant Physiology, Faculty of Agriculture and Economics, Agricultural University of Krakow, Podluzna 3, 30-239 Krakow, Poland

autor

Gasior D.

• Department of Plant Physiology, Faculty of Agriculture and Economics, Agricultural University of Krakow, Podluzna 3, 30-239 Krakow, Poland

autor

Koscielniak J.

• Department of Plant Physiology, Faculty of Agriculture and Economics, Agricultural University of Krakow, Podluzna 3, 30-239 Krakow, Poland

autor

Kosmala A.

• Institute of Plant Genetics, Polish Academy of Sciences, Strzeszynska 34, 60-479 Poznan, Poland

autor

Zwierzykowski Z.

• Institute of Plant Genetics, Polish Academy of Sciences, Strzeszynska 34, 60-479 Poznan, Poland

autor

Humphreys M. W.

• Institute of Grassland and Environmental Research, Plas Gogerddan, Aberystwyth, Ceredigion SY23 3EB, UK

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