What are most physiological aspect of essential nutrient as Selenium .Which crop is most sensitive for it. Kindly highlight in term of research and deployment.
Se promotes an important role in plant growth and development, directly Linking/enhancing the antioxidant power and rising up stressfull resistance of plants. The Power of plants to avoid/inhibit pathoBionts and to defend against diseases is linked to maintaining the plant cell/organelle composition Getting down oxidative stress, avoiding the mycelia growth and spore germination of pathogen, destructing the plasma membrane of conidia, and Disturbing pathogen’s metabolism. In addition, the plant resistance to insect pests is also affected by selenium through deterring herbivorous insects from feeding or oviposition and leading to the death of early instars, reduced size or weight, prolonged periods of development of the immature stages, reduced adult longevity and fecundity, and the death in the prepupal or pupal stage. Based on the element defense theory, Se has been demonstrated to be effective in regulation and controlling of plant fungal diseases and insect pests. Althought, the specific effect may be related to the bioavailability, application methods and suitable sources (organic/inorganic/nanoparticles etc.).
The future on the researching on Se and plant immunity is promoted to focus on mechanisms according the beneficial and toxic properties of different chemical forms of Se in plants. The practical exposure and dose ranges of Se on different fungal pathogens and insects also need to be well determined. The tolerance of the plant with Se regarding to the biological pathogens´s features and phytophagous insects should be addressed when determining effects of different Se concentrations in different chemical forms. Previous studies primarily focused on fungal diseases, with only a few on bacterial and/or viral diseases. One might speculate that the effects of Se on bacteria and viruses would be similar to the effects of Se on fungi in plants, providing a research hypothesis that needs to be tested in future research. Due to potential biomagnification of Se through food chains, it may also be important to carefully monitor the Se accumulation in insects to ensure ecological safety during pest control particularly with Se-biofortified crop production.
Selenium (Se) is an essential plant micronutrient and has been repetedly shown to enhance crop growth and crop tolerance to abiotic stresses when applied in trace amounts.
Selenium protects plants from several abiotic stresses and counteracts oxidative stress by inhibiting lipid peroxidation (Djanaguiraman et al. 2005). Selenium was able to promote the growth and development of rice plants and increased the antioxidant capacity of plants subjected to stresses (Peng et al.15 Eyl 2020)
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