Genome-wide identification, evolution and expression analysis of mTERF gene family in maize.
Plant mitochondrial transcription termination factor (mTERF) genes comprise a large family with important roles in regulating organelle gene expression. In this study, a comprehensive database search yielded 31 potential mTERF genes in maize (Zea mays L.) and most of them were targeted to mitochondria or chloroplasts. Maize mTERF were divided into nine main groups based on phylogenetic analysis, and group IX represented the mitochondria and species-specific clade that diverged from other groups. Tandem and segmental duplication both contributed to the expansion of the mTERF gene family in the maize genome. Comprehensive expression analysis of these genes, using microarray data and RNA-seq data, revealed that these genes exhibit a variety of expression patterns. Environmental stimulus experiments revealed differential up or down-regulation expression of maize mTERF genes in seedlings exposed to light/dark, salts and plant hormones, respectively, suggesting various important roles of maize mTERF genes in light acclimation and stress-related responses. These results will be useful for elucidating the roles of mTERF genes in the growth, development and stress response of maize.
National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, China.
Yanxin
Y
Zhao
National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, China.
Manjun
M
Cai
National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, China.
Xiaobo
X
Zhang
National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, China.
Yurong
Y
Li
National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, China.
Jianhua
J
Zhang
National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, China.
Hailiang
H
Zhao
National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, China.
Fei
F
Kong
National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, China.
Yonglian
Y
Zheng
National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, China.
Fazhan
F
Qiu
D000222:Adaptation, Physiological / Q000235:genetics; D020816:Amino Acid Motifs; D000595:Amino Acid Sequence; D050976:Basic-Leucine Zipper Transcription Factors / Q000737:chemistry / Q000145:classification / Q000235:genetics* / Q000502:physiology; D060365:Chloroplast Proteins / Q000737:chemistry / Q000145:classification / Q000235:genetics / Q000502:physiology; D002874:Chromosome Mapping; D032461:Chromosomes, Plant / Q000235:genetics; D017124:Conserved Sequence; D020440:Gene Duplication; D018506:Gene Expression Regulation, Plant / Q000187:drug effects / Q000528:radiation effects; D017343:Genes, Plant; D008027:Light; D024101:Mitochondrial Proteins / Q000737:chemistry / Q000145:classification / Q000235:genetics* / Q000502:physiology; D008958:Models, Molecular; D008969:Molecular Sequence Data; D009928:Organ Specificity; D010802:Phylogeny; D010937:Plant Growth Regulators / Q000494:pharmacology; D018515:Plant Leaves / Q000378:metabolism; D010940:Plant Proteins / Q000737:chemistry / Q000145:classification / Q000235:genetics* / Q000502:physiology; D011401:Promoter Regions, Genetic / Q000235:genetics; D011487:Protein Conformation; D012492:Salts / Q000494:pharmacology; D036226:Seedlings / Q000187:drug effects / Q000254:growth & development / Q000378:metabolism / Q000528:radiation effects; D016415:Sequence Alignment; D017386:Sequence Homology, Amino Acid; D013045:Species Specificity; D003313:Zea mays / Q000187:drug effects / Q000235:genetics* / Q000254:growth & development / Q000528:radiation effects
D050976:Basic-Leucine Zipper Transcription Factors; D060365:Chloroplast Proteins; D024101:Mitochondrial Proteins; D010937:Plant Growth Regulators; D010940:Plant Proteins; D012492:Salts