It is said that sildenafil citrate can help preserve flowers. Here's an experiment that you could do at home, but probably shouldn't, to find out.
Tag - ROS
Alun Salt
PtHMGR overexpression enhances tolerance of salt and drought
Overexpression of PtHMGR enhanced the stress resistance of poplar.
Regulation of peroxidase and molecular functions of 2-Cys PrxA
The 2-Cys peroxiredoxin (Prx) A protein of Arabidopsis thaliana performs the dual functions of a peroxidase and a molecular chaperone depending on its conformation and the metabolic conditions. However, the precise...
botanyone
Vascular patterning of superoxide in bursting grapevine buds
Plants regulate cellular oxygen partial pressures (pO2), together with reduction/oxidation (redox) state in order to manage rapid developmental transitions such as bud burst after a period of quiescence. However, our...
Regulation of ROS and RNS in pepper seedlings
The development of seedlings involves many morphological, physiological and biochemical processes, which are controlled by many factors. Some reactive oxygen and nitrogen species (ROS and RNS, respectively) are...
Redox changes, dormancy breaking and ageing of seeds
Loss of seed viability has been associated with deteriorative processes that are partly caused by oxidative damage. The breaking of dormancy, a seed trait that prevents germination in unfavourable seasons, has also been...
Dual role of reactive oxygen species in seed physiology (Review)
Reactive oxygen species (ROS) are considered to be detrimental to seed viability. However, recent studies have demonstrated that ROS have key roles in seed germination particularly in the release of seed dormancy and...
Sodium nitroprusside and ozone in kiwifruit ripening
Despite their importance in many aspects of plant physiology, information about the function of oxidative and, particularly, of nitrosative signalling in fruit biology is limited. Tanou et al. study the ripening of...
Zinc stress and ROS and RNS metabolism of roots
Zinc (Zn) is an essential micronutrient naturally present in soils, but anthropogenic activities can lead to accumulation in the environment and resulting damage to plants. Heavy metals such as Zn can induce oxidative...
Over-expression of Trxo1 and cell viability under H2O2 stress
Ortiz-Espín et al. treat over-expressing PsTrxo1 tobacco (Nicotiana tabacum) BY-2 cells with H2O2 and find a significant delay in cell death compared to controls, which may in part be due to a decreased content of...
Role of AOX1A in optimizing photosynthesis
Vishwakarma et al. treat wild-type and aox1a knock-out mutants of Arabidopsis thaliana with antimycin A and find that restriction of the cytochrome c oxidase (COX) pathway in the background of an impaired AOX pathway...
Organelle-originated ROS and endoplasmic reticulum responses
Ozgur et al. induce the formation of reactive oxygen species (ROS) in chloroplasts, mitochondria and peroxisomes of Arabidopsis thaliana and find that relatively low concentrations of ROS are more effective for...
Role of polyphenol oxidase in oxidative stress in leaves
Polyphenol oxidases (PPOs) catalyse the oxidation of monophenols and/or o-diphenols to highly reactive o-quinones, which in turn interact with oxygen and proteins to form reactive oxygen species (ROS) and typical brown...
Vitamin E, phosphorus availability and longevity in arabidopsis
Vitamin E helps to control the cellular redox state by reacting with singlet oxygen and preventing the propagation of lipid peroxidation in thylakoid membranes. Both plant ageing and phosphorus deficiency can trigger...
