Silicon Effects on Stress in Plants
A special issue of Plants (ISSN 2223-7747). This special issue belongs to the section "Plant Response to Abiotic Stress and Climate Change".
Deadline for manuscript submissions: closed (28 February 2022) | Viewed by 9197
Special Issue Editors
Interests: calcium signaling; ion transport; oxygen deficiency; salt stress; stress tolerance
Special Issues, Collections and Topics in MDPI journals
Interests: abiotic stress in plants; plant genomics; phytoremediation; molecular characterization of transporter gene; plant-microbe interactions
Special Issue Information
Dear Colleagues,
Silicon (Si) is the second most abundant element both on the Earth’s crust surface and in the soils. Although Si has not been considered as an essential element for higher plants, it has proved to be beneficial for a healthy growth and development of many plant species and to increase resistance to toxic metals, including aluminium (Al), iron (Fe), zinc (Zn), cadmium (Cd) and manganese (Mn) in some plants. Silicon was also reported to ameliorate salinity stress in plants.
Little is known about the mechanism behind Si-mediated alleviation of toxic metal uptake, such as uptake of salt and heavy metals. In rice Si reduces the sodium uptake to the shoot by a reduction in the transpiration bypass flow, and in canola plants Si addition to the nutrient solution reduces Na uptake, lipid peroxidation and lignification of roots, and increases capacity of antioxidant defense. Silicon may also build a complex with Na in the root tissue, thereby preventing the uptake into the shoot.
Silicic acid, [Si (OH)4 ], is the chemical compound taken up into plant cells as it is able to cross the root-plasma membrane and to be translocated from root to shoot. Si may exhibit various effects on roots and shoots and affect the transport of toxic ions. To improve plant growth under abiotic stress, it is important to get new information on toxic ion uptake in the absence and presence of Si, and on transporters involved and how they are affected by Si.
Prof. Sylvia Lindberg
Dr. Ahmad Humayan Kabir
Guest Editors
Manuscript Submission Information
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Keywords
- abiotic stress
- genes involved
- silicon
- tolerance
- uptake mechanisms
