Selenium in Soil–Plant-Microbe: A Review

Abstract

Selenium (Se) plays an important role in geochemistry and is an essential trace element for humans and animals. This review summarizes the transformation and accumulation of Se in the plant-soil-microbe system. As one of the important reservoirs of Se, soil is an important material basis of its entry into the food chain through plants. Soil with an appropriate amount of Se is beneficial for plant growth and plays a valuable role in a stress-resistant environment. Among the many migration and transformation pathways, the transformation of Se by microorganisms is particularly important and is the main form of Se transformation in the soil environment. In this review, the role and form transformation of Se in plants, soil, and microorganisms; the role of Se in plants; the form, input, and output of Se in soil; the absorption and transformation of Se by plants; and the role of microorganisms in Se transformation are presented. In addition to describing the migration and transformation laws of Se in the environment, this review expounds on the main directions and trends of Se research in the agricultural field as well as current gaps and difficulties in Se-related research. Overall, this reviews aims to provide necessary information and theoretical references for the development of Se-rich agriculture.

Enhancing the Activity of Carboxymethyl Cellulase Enzyme Using Highly Stable Selenium Nanoparticles Biosynthesized by Bacillus paralicheniformis Y4

“…The growth-promoting potential of probiotics is realized once they have entered the digestive tracts of animals. B. paralicheniformis Y4 was in good condition under a range of temperatures (28-37 • C), NaCl concentrations (1-3%), and pH (5)(6)(7)(8)(9), which may be used as feed additives and for the production of Se(0)-containing industrial products.…”

“…However, although selenium can significantly improve the nutritional quality of feed, there are few reports on its decomposition of carboxymethyl cellulose (CMC) [ 4 ]. Selenium (Se) is one of the essential trace elements for animals, plants, and humans [ 5 , 6 , 7 , 8 ]. Selenium occurs mostly in inorganic forms represented by selenate, selenite, and selenide; the first two soluble forms have high bioaccumulation rates and narrow thresholds between the appropriate and toxic concentrations.…”

Voyage of selenium from environment to life: Beneficial or toxic?

“…[18,[30][31][32] The ability of many lactic acid bacteria to biotransform inorganic selenium into nontoxic Se-nanoparticles (SeNPs) and Seamino acids can also be explored in the preparation of functional plants. [33,34] Thus, a practical route for enriching selenium in crops can be via application of microorganisms [35] such as mycorrhizal and root endophytic fungi, dark septate fungi and plant growthpromoting rhizobacteria, directly into plants or in the soil used for growing them. In soils, among selenate or selenite, selenate is the most prevalent form of Se absorbed by plants.…”

Comparative physiological and soil microbial community structural analysis revealed that selenium alleviates cadmium stress in Perilla frutescens

“…Selenium (Se) is an essential trace element for organisms, and the organic form of Se is important for the body's immune and reproductive systems, the accurate functioning of the thyroid and brain, and to enzyme activity within cells (Zhu et al, 2009;Punamiya et al, 2010;Natasha et al, 2018;Hossain et al, 2021). Se plays a role in the anti-lipid peroxidation in plants (Schiavon and Pilon-Smits, 2017;Wang et al, 2021a). Se supply increase the content of sugar and crude fiber in carrot fleshy roots, which ultimately increases the yield of carrots (Wang et al, 2006).…”

“…Changes in soil quality impact the population and activity of soil microorganisms (Griffiths and Philippot, 2013). Se supply alters the community structure and diversity of soil microorganisms (Wang et al, 2021a). Low concentrations of Se 4+ or Se 6+ increase the number and diversity of soil microorganisms, while high concentration showed an inhibitory effect (Rosenfeld et al, 2018).…”