[1] [1] Amir, R.(2010). Current understanding of the factors regulating methionine content in vegetative tissues of higher plants. Amino Acids39:917-931.

[2] [2] de Bont, L., Donnay, N., Couturier, J., and Rouhier, N.(2022). Redox regulation of enzymes involved in sulfate assimilation and in the synthesis of sulfur-containing amino acids and glutathione in plants. Front. Plant Sci.13:958490.

[3] [3] Devi, V., Bhushan, B., Gupta, M., Sethi, M., Kaur, C., Singh, A., Singh, V., Kumar, R., Rakshit, S., and Chaudhary, D.P.(2023). Genetic and molecular understanding for the development of methionine-rich maize: a holistic approach. Front. Plant Sci.14:1249230.

[4] [4] Hacham, Y., Schuster, G., and Amir, R.(2006). An in vivo internal deletion in the N-terminus region of Arabidopsis cystathionine -synthase results in CGS expression that is insensitive to methionine. Plant J.45:955-967.

[5] [5] Hell, R., and Wirtz, M.(2011). Molecular Biology, Biochemistry and Cellular Physiology of Cysteine Metabolism in Arabidopsis thaliana. Arabidopsis Book9:e0154.

[6] [6] Jiang, L., Wang, Y., Xia, A., Wang, Q., Zhang, X., Jez, J.M., Li, Z., Tan, W., and He, Y.(2021). A natural single-nucleotide polymorphism variant in sulfite reductase influences sulfur assimilation in maize. New Phytol.232:692-704.

[7] [7] Koprivova, A., and Kopriva, S.(2014). Molecular mechanisms of regulation of sulfate assimilation: First steps on a long road. Front. Plant Sci.5:589.

[8] [8] Lu, X., Lei, Y., Xu, Z., Cheng, Z., Liu, M., Tai, Y., Han, X., Hao, Z., Li, M., Zhang, D., et al.(2025). Natural variations in the promoter of ZmDeSI2 encoding a deSUMOylating isopeptidase controls kernel methionine content in maize. Mol. Plant18:872-891.

[9] [9] Navik, U., Sheth, V.G., Khurana, A., Jawalekar, S.S., Allawadhi, P., Gaddam, R.R., Bhatti, J.S., and Tikoo, K.(2021). Methionine as a double-edged sword in health and disease: Current perspective and future challenges. Ageing Res. Rev.72:101500.

[10] [10] Onouchi, H., Nagami, Y., Haraguchi, Y., Nakamoto, M., Nishimura, Y., Sakurai, R., Nagao, N., Kawasaki, D., Kadokura, Y., and Naito, S.(2005). Nascent peptide-mediated translation elongation arrest coupled with mRNA degradation in the CGS1 gene of Arabidopsis. Genes Dev.19:1799-1810.

[11] [11] Xiang, X., Hu, B., Pu, Z., Wang, L., Leustek, T., and Li, C.(2022). Cooverexpression of AtSAT1 and EcPAPR improves seed nutritional value in maize. Front. Plant Sci.13:969763.