Endogenous IAA affected fluoranthene accumulation by regulating H+-ATPase and SOD activity in ryegrass
These videos have been matched automatically. Contact us if they are not relevant.
These videos have been matched automatically. Contact us if they are not relevant.
View abstract on PubMed
Summary
This summary is machine-generated.This study shows that indole-3-acetic acid (IAA) influences how ryegrass handles pollution stress and accumulates fluoranthene (Flu). Boosting IAA enhances growth and pollutant uptake, while inhibiting it has the opposite effect.
Area Of Science
- Plant Physiology
- Environmental Science
- Biochemistry
Background
- Pollution stress significantly impacts plant health and function.
- Understanding plant hormone roles in stress response is crucial for phytoremediation.
- Endogenous indole-3-acetic acid (IAA) is a key plant hormone involved in growth and stress responses.
Purpose Of The Study
- To investigate the role of endogenous IAA in ryegrass response to fluoranthene (Flu) pollution.
- To elucidate the mechanisms by which IAA modulates Flu accumulation and plant defense.
- To explore the impact of modulating IAA levels on Flu uptake and translocation.
Main Methods
- Ryegrass was treated with fluoranthene (Flu) and either an IAA promoter (α-aminobutyric acid, α-AB) or an IAA inhibitor (naphthylphthalamic acid, NPA).
- Plant growth, Flu accumulation, antioxidant enzyme activities (SOD, POD, CAT), soluble sugar, protein levels, and H+-ATPase activity were measured.
- Transpiration rate and Flu translocation factor were analyzed.
- Random forest analysis was used to determine factors influencing Flu accumulation.
Main Results
- Flu treatment increased IAA content, plant growth, antioxidant enzyme activity, soluble sugar, protein levels, and H+-ATPase activity in ryegrass.
- Flu+α-AB treatment further enhanced these positive effects and increased Flu accumulation and transpiration.
- Flu+NPA treatment attenuated these responses and reduced Flu accumulation.
- Flu accumulation dependency shifted from H+-ATPase activity (under Flu+α-AB) to SOD activity (under Flu+NPA).
Conclusions
- Endogenous IAA plays a critical role in modulating ryegrass responses to Flu pollution stress.
- Modulating IAA levels can control fluoranthene accumulation and translocation in ryegrass.
- This research offers insights into phytoremediation strategies for managing plant contaminant uptake.
These videos have been matched automatically. Contact us if they are not relevant.
These videos have been matched automatically. Contact us if they are not relevant.
Related Concept Videos
Though evaporation from plant leaves drives transpiration, it also results in loss of water. Because water is critical for photosynthetic reactions and other cellular processes, evolutionary pressures on plants in different environments have driven the acquisition of adaptations that reduce water loss.
In land plants, the uppermost cell layer of a plant leaf, called the epidermis, is coated with a waxy substance called the cuticle. This hydrophobic layer is composed of the polymer cutin and...
During photosynthesis, plants acquire the necessary carbon dioxide and release the produced oxygen back into the atmosphere. Openings in the epidermis of plant leaves is the site of this exchange of gasses. A single opening is called a stoma—derived from the Greek word for “mouth.” Stomata open and close in response to a variety of environmental cues.
Each stoma is flanked by two specialized guard cells that create an opening when these cells take up water. The transport of...
Water plays a significant role in the life cycle of plants. However, insufficient or excess of water can be detrimental and pose a serious threat to plants.
Under normal conditions, water taken up by the plant evaporates from leaves and other parts in a process called transpiration. In times of drought stress, water that evaporates by transpiration far exceeds the water absorbed from the soil, causing plants to wilt. The general plant response to drought stress is the synthesis of hormone...