ACTA AGRICULTURAE BOREALI-SINICA ›› 2020, Vol. 35 ›› Issue (1): 8-21. doi: 10.7668/hbnxb.20190649

Special Issue: Corn Hot Article

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

Transcriptome and Metabolome Analysis to Reveal the Mechanisms Responding to High Temperature Stress in Anthesis Stage of Maize

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

  1. Cereal Crops Institute, Henan Academy of Agricultural Sciences, Zhengzhou 450002, China
  • Received:2019-10-27 Published:2020-02-28

Abstract: The aim of the study was to explore differential expression of genes and metabolites in Zhengdan 958 and Xianyu 335 exposed to high temperature for 7,14 d during grain filling stage and identify the key candidate genes,transcription factors and metabolites,so as to understand molecular mechanism of high temperature tolerance in maize. The ear-leaf samples collected before high temperature treated(CK),7 d high temperature treated,14 d from Zhengdan 958 and Xianyu 335 were used for RNA-sequencing using Illumina HiSeqTM 2500 high-throughput sequencing technology. Metabolome variations analyzed using liquid-chromatography-mass spectrometry-based metabolomics. A total of 214.81 Gb clean sequence was obtained by transcriptome sequencing. In Zhengdan 958,49 DEGs were detected after 7 days of high temperature treated,of which 24 were up-regulated genes. 306 DEGs were detected after 14 d,130 of which were up-regulated genes. 1 462 DEGs were detected from 7 d samples compared with 14 d samples,of which 647 were up-regulated genes. In Xianyu 335,381 DEGs were detected after 7 days of high temperature treated,of which 164 were up-regulated genes. 299 DEGs were detected after 14 d,226 of which were up-regulated genes. 2 481 DEGs were detected from 7 d treated samples compared with 14 d treated samples,of which 1 275 were up-regulated genes. Comparing Zhengdan 958 samples treated for 7 d with Xianyu 335 samples treated for 7 d,6 646 DEGs were detected,of which 3 253 up-regulated genes. Comparing Zhengdan 958 samples treated for 14 d with Xianyu 335 samples treated for 14 d,5 958 DEGs were detected,of which 3 110 up-regulated genes. A total of 654 metabolites were detected by metabolomics sequencing. In Zhengdan 958,28 DEMs were detected after 7 days of high temperature treated and were annotated into 5 metabolic pathways. 54 DEMs were detected after 14 days,9 of which were up-regulated,and were annotated into 13 metabolic pathways. In Xianyu 335, 98 DEMs were detected after 7 d of high temperature treated,43 of which were up-regulated and were annotated into 24 metabolic pathways. 38 DEMs were detected after 14 d,14 of which were up-regulated,and were annotated into 13 metabolic pathways. Compared Zhengdan 958 with Xianyu 335,144 DEMs were detected after 7 days,81 of which were up-regulated,and were annotated into 36 metabolic pathways.158 DEMs were detected after 14 days,81 of which were up-regulated,and were annotated into 40 metabolic pathways.

Key words: Maize, High temperature stress, Anthesis stage, Illumina RNA-sequencing, Metabolomics profiling, Differentially expressed gene(DEG)

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Cite this article

LI Chuan, QIAO Jiangfang, HUANG Lu, ZHANG Meiwei, ZHANG Panpan, NIU Jun, LIU Jingbao. Transcriptome and Metabolome Analysis to Reveal the Mechanisms Responding to High Temperature Stress in Anthesis Stage of Maize[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2020, 35(1): 8-21. doi: 10.7668/hbnxb.20190649.

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