ACTA AGRICULTURAE BOREALI-SINICA ›› 2020, Vol. 35 ›› Issue (4): 15-26. doi: 10.7668/hbnxb.20190948

Special Issue: Corn Hot Article

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

Transcriptome Analysis Revealing the Mechanisms of Kernel Dehydration Rate Responding to ABA Application in Maize

LI Chuan, HUANG Lu, ZHANG Meiwei, ZHANG Panpan, LIU Jingbao, NIU Jun, QIAO Jiangfang   

  1. Cereal Crops Institute, Henan Academy of Agricultural Sciences, Zhengzhou 450002, China
  • Received:2020-02-08 Published:2020-08-28

Abstract: In order to explore the molecular mechanism of kernel dehydration rate changes and to find out the differentially expressed genes(DEGs) and metabolic pathways in DK517 and ZD1002 after spraying exogenous abiscisic acid(ABA) during grain-filling stage,the ear leaves of DK517 (with faster dehydration rate) and ZD1002 (with slower dehydration rate) before and after spraying ABA were used in sequencing with Illumina HiSeqTM2500 high-throughput sequencing technology. After sequence quality control,genome alignment,sequencing saturation,gene coverage and gene redundant analysis,gene functions were annotated with reference database. The results were as below:1 732 DEGs were detected in DK517-ABA80 VS DK517-CK group,of which 1 251 DEGs were up-regulated and 481 DEGs were down regulated. 52 DEGs were detected in ZD1002-ABA80 VS ZD1002-CK group,24 of which were up regulated. There were 3 867 DEGs,which were detected in DK517-ABA80 VS ZD1002-ABA80,of which 1 946 DEGs were up regulated. The GO analysis,COG analysis and KEGG pathways were all different in the above three control groups.Important transcription factor families were obtained,including AGC protein kinase family,AP2/ERF transcription factor family,ARID transcription factor family,AUX/IAA transcription factor family,Alfin-like transcription factor family,Aur transcription factor family,B3 transcription factor family,BBR-BPC transcription factor family,BES1 transcription factor family,BUB transcription factor family and C2C2-CO-like transcription factor. Genes Zm00001d035000,Zm00001d042063,Zm00001d045314 were all expressing in DK517 and ZD1002. 73 DEGs were related to water metabolism,which played important roles in kernel dehydration acting as downstream genes regulated by exogenous ABA.

Key words: Maize, Ear leaf, Exogenous abscisic acid (ABA), Illumina RNA-sequencing, Differentially expressed genes(DEGs), Kernel dehydration rate

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Cite this article

LI Chuan, HUANG Lu, ZHANG Meiwei, ZHANG Panpan, LIU Jingbao, NIU Jun, QIAO Jiangfang. Transcriptome Analysis Revealing the Mechanisms of Kernel Dehydration Rate Responding to ABA Application in Maize[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2020, 35(4): 15-26. doi: 10.7668/hbnxb.20190948.

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