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Genetic Variation of the Serine Acetyltransferase Gene Family for Sulfur Assimilation in Maize.
- Source :
-
Genes [Genes (Basel)] 2021 Mar 19; Vol. 12 (3). Date of Electronic Publication: 2021 Mar 19. - Publication Year :
- 2021
-
Abstract
- Improving sulfur assimilation in maize kernels is essential due to humans and animals' inability to synthesize methionine. Serine acetyltransferase (SAT) is a critical enzyme that controls cystine biosynthesis in plants. In this study, all SAT gene members were genome-wide characterized by using a sequence homology search. The RNA-seq quantification indicates that they are highly expressed in leaves, other than root and seeds, consistent with their biological functions in sulfur assimilation. With the recently released 25 genomes of nested association mapping (NAM) founders representing the diverse maize stock, we had the opportunity to investigate the SAT genetic variation comprehensively. The abundant transposon insertions into SAT genes indicate their driving power in terms of gene structure and genome evolution. We found that the transposon insertion into exons could change SAT gene transcription, whereas there was no significant correlation between transposable element (TE) insertion into introns and their gene expression, indicating that other regulatory elements such as promoters could also be involved. Understanding the SAT gene structure, gene expression and genetic variation involved in natural selection and species adaption could precisely guide genetic engineering to manipulate sulfur assimilation in maize and to improve nutritional quality.
- Subjects :
- Cystine biosynthesis
DNA Transposable Elements
Gene Expression Regulation, Plant
Multigene Family
Phylogeny
Plant Leaves genetics
Plant Proteins genetics
Plant Roots genetics
Seeds genetics
Selection, Genetic
Sequence Analysis, RNA
Tissue Distribution
Zea mays genetics
Zea mays metabolism
Gene Expression Profiling methods
Genetic Variation
Serine O-Acetyltransferase genetics
Sulfur metabolism
Zea mays enzymology
Subjects
Details
- Language :
- English
- ISSN :
- 2073-4425
- Volume :
- 12
- Issue :
- 3
- Database :
- MEDLINE
- Journal :
- Genes
- Publication Type :
- Academic Journal
- Accession number :
- 33808582
- Full Text :
- https://doi.org/10.3390/genes12030437