Effect of Elevated Temperature on Premature Senescence in Nodules of Pea (Pisum sativum L.) sym26 and sym27 Mutants. II. Ultrastructural Organization.

Autor: Tsyganova, A. V., Seliverstova, E. V., Gorshkov, A. P., Serova, T. A., Tsyganov, V. E.
Zdroj: Russian Journal of Plant Physiology; Dec2023, Vol. 70 Issue 8, p1-12, 12p
Abstrakt: Delaying nodule senescence and prolonging the time of nitrogen fixation are promising objectives for increasing legume yields. However, the mechanisms of nodule senescence still require further investigation. In this study, the ultrastructural organization of symbiotic nodules subjected to the combined effect of two factors that activate premature senescence of symbiotic nodules: ineffective interaction and elevated temperature (28°C) was investigated. It was demonstrated that symbiotically ineffective pea (Pisum sativum L.) mutant lines SGEFix−-3 (sym26) and SGEFix−-7 (sym27) exhibiting a premature senescence phenotype respond differently to a stress factor such as elevated temperature. Indeed, the mutant line SGEFix−-3 (sym26) exhibited pronounced oxidative stress reactions, while the mutant line SGEFix−-7 (sym27) developed reactions affecting cell walls. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index
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