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| Hauptseite > Publikationsdatenbank > Mitochondrial complex I subunit NDUFS8.2 modulates responses to stresses associated with reduced water availability > print |
| Hauptseite > Publikationsdatenbank > Mitochondrial complex I subunit NDUFS8.2 modulates responses to stresses associated with reduced water availability > print |
| 001 | 1023691 | ||
| 005 | 20250204113808.0 | ||
| 024 | 7 | _ | |a 10.1016/j.plaphy.2024.108466 |2 doi |
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| 100 | 1 | _ | |a Zsigmond, Laura |0 0000-0002-1388-1762 |b 0 |e Corresponding author |
| 245 | _ | _ | |a Mitochondrial complex I subunit NDUFS8.2 modulates responses to stresses associated with reduced water availability |
| 260 | _ | _ | |a Amsterdam [u.a.] |c 2024 |b Elsevier Science |
| 336 | 7 | _ | |a article |2 DRIVER |
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| 520 | _ | _ | |a Mitochondria are important sources of energy in plants and are implicated in coordination of a number of metabolic and physiological processes including stabilization of redox balance, synthesis and turnover of a number of metabolites, and control of programmed cell death. Mitochondrial electron transport chain (mETC) is the backbone of the energy producing process which can influence other processes as well. Accumulating evidence suggests that mETC can affect responses to environmental stimuli and modulate tolerance to extreme conditions such as drought or salinity. Screening for stress responses of 13 Arabidopsis mitochondria-related T- DNA insertion mutants, we identified ndufs8.2-1 which has an increased ability to withstand osmotic and oxidative stresses compared to wild type plants. Insertion in ndufs8.2-1 disrupted the gene that encodes the NADH dehydrogenase [ubiquinone] fragment S subunit 8 (NDUFS8) a component of Complex I of mETC. ndufs8.2-1 tolerated reduced water availability, retained photosynthetic activity and recovered from severe water stress with higher efficiency compared to wild type plants. Several mitochondrial functions were altered in the mutant including oxygen consumption, ROS production, ATP and ADP content as well as activities of genes encoding alternative oxidase 1A (AOX1A) and various alternative NAD(P)H dehydrogenases (ND). Our results suggest that in the absence of NDUFS8.2 stress-induced ROS generation is restrained leading to reduced oxidative damage and improved tolerance to water deficiency. mETC components can be implicated in redox and energy homeostasis and modulate responses to stresses associated with reduced water availability. |
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