ACTA AGRICULTURAE BOREALI-SINICA ›› 2020, Vol. 35 ›› Issue (S1): 40-46. doi: 10.7668/hbnxb.20190786

Special Issue: Corn Biotechnology

• Crop Genetics and Breeding·Germplasm Resources·Biotechnology • Previous Articles     Next Articles

Sequence Variation Analysis of Maize Starch Synthesis Related Gene ZmAGP2

ZHANG Meng, ZHANG Hanhan, XU Min, HE Huan, WU Xueyi, Lü Yingying, ZHANG Enying   

  1. College of Agronomy, Qingdao Agricultural University, Key Laboratory of Germplasm Innovation and Application of Major Crops in Qingdao, Qingdao 266109, China
  • Received:2020-06-14 Published:2020-12-28

Abstract: The ZmAGP2 gene encoding ADP large subunit of glucose pyrophosphory is involved in the synthesis of corn starch,thus affecting the yield and quality of corn. Maize yield traits are controlled by multiple genes,and its genetic mechanism is very complex. This study aims to fully explore the excellent allelic variation of genes closely related to yield traits through gene sequence variation analysis,which provides a theoretical basis for improving the molecular level of maize breeding. The ZmAGP2 genes sequences of 103 inbred test populations were captured and sequenced using NimbleGen platform. ClustalX 2.0,DnaSP 6.0 and other software were used to analyze the nucleotide polymorphism of the target gene,and the neutral evolution test and haplotype analysis of the mutation site were carried out. The full-length sequence of 4 111 bp was obtained by resequencing the ZmAGP2 genes of 103 maize inbred lines. After nucleotide polymorphism analysis,a total of 112 mutation sites in the full-length sequence were detected,all of which SNP,nucleotide polymorphisms in 5' UTR segments were significantly higher than those in other segments. Polymorphism in the CDS region of the gene drived the ZmAGP2 gene into eight haplotypes encoding five different ZmAGP2 proteins. Neutral test did not detect obvious manually selected signals. The ZmAGP2 gene showed high variation,which accorded with the neutral evolution model hypothesis,was not subject to obvious artificial selection,and the protein sequence changed,which indicated that the sequence variation of the gene causes the change of the protein sequence,which lead to the change of the function of the gene.

Key words: Maize, ZmAGP2 gene, Starch synthesis, Nucleotides polymorphism, Neutral test, Haplotype

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Cite this article

ZHANG Meng, ZHANG Hanhan, XU Min, HE Huan, WU Xueyi, Lü Yingying, ZHANG Enying. Sequence Variation Analysis of Maize Starch Synthesis Related Gene ZmAGP2[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2020, 35(S1): 40-46. doi: 10.7668/hbnxb.20190786.

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