Acta Agriculturae Boreali-Sinica ›› 2023, Vol. 38 ›› Issue (4): 11-19. doi: 10.7668/hbnxb.20193984

Special Issue: Corn Biotechnology Hot Article

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

Kernel Transcriptome Analysis of Maize Inbred Lines in Response to High Temperature Stress

TANG Bin1, GENG Cunjuan2, ZENG Qiang1, GUO Huanle1, LI Han1, CAO Zhongyang1, DENG Lichao1, PENG Ming1, ZHOU Hong1, CHEN Zhihui1   

  1. 1 Hunan Crop Research Institute,Changsha 410125,China
    2 Hunan Zhixingsanxiang Agricultural and Forestry Technology Co.Ltd.,Changsha 410205,China
  • Received:2023-03-18 Published:2023-08-28

Abstract:

Maize grain development stage is very sensitive to high temperature stress,which seriously affects the yield and quality of maize.To study the difference of gene expression in grain and analyze the gene molecular mechanism of different high-temperature tolerant maize inbred lines in response to high-temperature stress,RNA-Seq technology was used to analysis the differentially expressed genes(DEGs)of XN202(heat tolerant)and CT110(heat susceptible)in maize grains 15 days after pollination under normal and high temperature stress.Compared with the control,XN202 and CT110 detected 1 517 and 1 012 DEGs,respectively,with 142 common DEGs,including 7 transcription factors.There were significant differences in grain response to high temperature stress among different heat tolerant inbred lines.DNA replication,nucleosome,minichromosome maintenance complex,alpha DNA polymerase:primase complex,nutrient reservoir activity,alanine,aspartate and glutamate metabolism were involved in response to high temperature stress through gene ontology(GO)function annotation and kyoto encyclopedia of genes and genomes(KEGG)signal pathway enrichment analysis.According to bioinformatics analysis,a total of 374 DEGs were located in the reported QTL interval of heat tolerance related traits in maize,and 42 DEGs were putative heat tolerance candidate genes.In summary,maize grains could form complex cellular protection and defense system under high temperature stress,and DEGs related to high temperature tolerance,such as AP2/ERF,MYB,bHLH,NAC,HSF and HSP,might play an important role in the molecular regulatory network.

Key words: Zea mays L., Heat stress, Transcriptome sequencing, Differentially expression genes, Quantitative trait loci(QTL)

Cite this article

TANG Bin, GENG Cunjuan, ZENG Qiang, GUO Huanle, LI Han, CAO Zhongyang, DENG Lichao, PENG Ming, ZHOU Hong, CHEN Zhihui. Kernel Transcriptome Analysis of Maize Inbred Lines in Response to High Temperature Stress[J]. Acta Agriculturae Boreali-Sinica, 2023, 38(4): 11-19. doi: 10.7668/hbnxb.20193984.

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