Atnoa1 mutant Arabidopsis plants induce compensation mechanisms to reduce the negative effects of the mutation

0367373 - ÚEB 2012 RIV PT eng J - Článek v odborném periodiku
Majlath, I. - Szalai, G. - Papp, I. - Vaňková, Radomíra - Janda, T.
Atnoa1 mutant Arabidopsis plants induce compensation mechanisms to reduce the negative effects of the mutation.
Journal of Plant Physiology. Roč. 168, č. 11 (2011), s. 1184-1190. ISSN 0176-1617. E-ISSN 1618-1328
Výzkumný záměr: CEZ:AV0Z50380511
Klíčová slova: Atnoa1 * Freezing * Polyamines
Kód oboru RIV: EB - Genetika a molekulární biologie
Impakt faktor: 2.791, rok: 2011

Alterations in temperature adaptation processes and changes in the content of stress-related compounds, polyamines and salicylic acid were evaluated in Atnoa1 (NO-associated 1) Arabidopsis mutant. The F,IF,T, chlorophyll-a fluorescence induction parameter and the actual quantum yield were significantly lower in the Atnoa1 mutant than in the wild-type. In the wild-type Col-0, the fastest increase in the non-photochemical quenching (NPQ) occurred in plants pre-treated at low temperature (4 degrees C), while the slowest was in those adapted to 30 degrees C. The NPQ showed not only a substantially increased level in the light-adapted state, but also more rapid light induction after the dark-adapted state in the Atnoa1 mutant than in the wild-type. The results of freezing tests indicated that both the wild-type and the mutant had better freezing tolerance after cold hardening, since no significant differences were found between the genotypes.
Trvalý link: http://hdl.handle.net/11104/0202082