pubmed.ncbi.nlm.nih.gov

Advances in Research on the Involvement of Selenium in Regulating Plant Ecosystems - PubMed

  • ️Sat Jan 01 2022

Review

Advances in Research on the Involvement of Selenium in Regulating Plant Ecosystems

Wei Chao et al. Plants (Basel). 2022.

Abstract

Selenium is an essential trace element which plays an important role in human immune regulation and disease prevention. Plants absorb inorganic selenium (selenite or selenate) from the soil and convert it into various organic selenides (such as seleno amino acids, selenoproteins, and volatile selenides) via the sulfur metabolic pathway. These organic selenides are important sources of dietary selenium supplementation for humans. Organoselenides can promote plant growth, improve nutritional quality, and play an important regulatory function in plant ecosystems. The release of selenium-containing compounds into the soil by Se hyperaccumulators can promote the growth of Se accumulators but inhibit the growth and distribution of non-Se accumulators. Volatile selenides with specific odors have a deterrent effect on herbivores, reducing their feeding on plants. Soil microorganisms can effectively promote the uptake and transformation of selenium in plants, and organic selenides in plants can improve the tolerance of plants to pathogenic bacteria. Although selenium is not an essential trace element for plants, the right amount of selenium has important physiological and ecological benefits for them. This review summarizes recent research related to the functions of selenium in plant ecosystems to provide a deeper understanding of the significance of this element in plant physiology and ecosystems and to serve as a theoretical basis and technical support for the full exploitation and rational application of the ecological functions of selenium-accumulating plants.

Keywords: allelopathy; ecosystem; plant; selenium.

PubMed Disclaimer

Conflict of interest statement

The authors declare no conflict of interest.

Figures

Figure 1
Figure 1

The main ways plants absorb and assimilate selenium. Note: SULTR, sulfate transporter; ATPS, ATP sulfurylase; APSe, adenosine 5′-phosphoselenate; APR, adenosine 5′-phosphosulfate reductase; SiR, sulfite reductase; GSH, glutathione; CSase, cysteine synthase; SMT, selenocysteine methyltransferase; SL, selenocysteine lyases; CGS, cystathionine-γ-synthase; CBL, cystathionine β-lyase; MTR, methionine synthase; MMT, methionine methyltransferase; SeCys, selenocysteine; SeMet, selenomethionine; SeHCys, Se homocysteine; SeMSeMet, methyl selenomethionine; SeMSeCys, methyl selenocysteine; DMSe, dimethyl selenide; DMDSe, dimethyl diselenide.

Figure 2
Figure 2

Pattern diagram of selenium participating in regulating plant ecosystem. Note: DMSe, dimethyl selenide; DMDSe, dimethyl diselenide; SeMet, selenomethionine; SeCys, selenocysteine.

Similar articles

Cited by

References

    1. Fairweather-Tait S.J., Bao Y., Broadley M.R., Collings R., Ford D., Hesketh J.E., Hurst R. Selenium in human health and disease. Antioxid. Redox Sign. 2011;14:1337–1383. doi: 10.1089/ars.2010.3275. - DOI - PubMed
    1. Zhang L., Song H., Guo Y., Fan B., Lu B. Benefit-risk assessment of dietary selenium and its associated metals intake in china (2017–2019): Is current selenium-rich agro-food safe enough? J. Hazard. Mater. 2020;398:123224. doi: 10.1016/j.jhazmat.2020.123224. - DOI - PubMed
    1. Lv Q., Liang X., Nong K., Gong Z., Qin T., Qin X., Wang D., Zhu Y. Advances in Research on the Toxicological Effects of Selenium. Bull. Environ. Contam. Toxicol. 2021;106:715–726. doi: 10.1007/s00128-020-03094-3. - DOI - PubMed
    1. Wang Q.Q., Yu S.C., Xu C.D., Liu J.J., Li Y.Q., Zhang M.H., Long X.J., Liu Y.N., Bi Y.F., Zhao W.H., et al. Association between Selenium in Soil and Diabetes in Chinese Residents Aged 35-74 Years: Results from the 2010 National Survey of Chronic Diseases and Behavioral Risk Factors Surveillance. Biomed. Environ. Sci. 2020;33:260–268. - PubMed
    1. Yu T., Hou W., Hou Q., Ma W., Xia X., Li Y., Yan B., Yang Z. Safe utilization and zoning on natural selenium-rich land resources: A case study of the typical area in Enshi County, China. Environ. Geochem. Health. 2020;42:2803–2818. doi: 10.1007/s10653-020-00519-0. - DOI - PMC - PubMed

Publication types

LinkOut - more resources