How does a plant sense stress and pass those signals around its body? Corentin Dourmap and colleagues have reviewed the role of mitochondria in the plant cell and how they interact with stress signalling. Image: Canva...
Tag - reactive oxygen species
Fi Gennu
Does Viagra really help preserve flowers?
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.
Alun Salt
Scientists find critical receptor that allows plant cells to pass stress signals
Adenosine triphosphate (ATP) is well-known for its role in cells as acting almost like currency for energy storage. Research by Elsa Matthus and colleagues shows that it can also play an important role outside the cell...
Characterization of a CONSTANS-Like gene induced in spaceflight
The complex networks and signalling pathways that equip plants to cope with environmental challenges in terrestrial environments developed over evolutionary time. Exposing plants to novel environments presents...
William Salter
Cytosolic dehydrogenase in Arabidopsis responses to root-knot nematode infection
Plant defence reaction is associated with activation of primary metabolic pathways. Glucose-6-phosphate dehydrogenase (G6PDH), the key enzyme of the oxidative pentose phosphate (OPP), pathway is involved in plant...
Alex Assiry
Subsidiary cell formation in Poaceae stomatal complexes
Polarisation and asymmetrical division generating the Poaceous subsidiary cells constitutes a very attractive model for the study of local intercellular stimulation. Auxin operates as an inductive stimulus while PIN...
Non-Specific Phospholipase C2 (NPC2) in plant immune responses in Arabidopsis
The non-specific phospholipases C (NPC) are recently discovered new subclass of plant phospholipases. Most of them have not yet been characterised thoroughly. Krčková et al. prepare and purify Arabidopsis thaliana NPC2...
botanyone
Modulation of host plant immunity by Tobamovirus proteins
To establish infections, plant viruses effect profound alterations to host physiology that disturb endogenous processes and contribute to the development of disease symptoms. Conti et al. summarise recently described...
Elevating expression of phytoglobins enhances photosynthetic response of root-flooded maize
Decreased crop photosynthetic rates are a major consequence of root flooding as severe perturbations of the photosynthetic machinery result from elevated levels of reactive oxygen species (ROS). Phytoglobins (Pgbs) are...
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...
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...
