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Maize leaves drought-responsive genes revealed by comparative transcriptome of two cultivars during the filling stage.
Wednesday, 2019/11/06 | 08:21:30

Jin HLiu SZenda TWang XLiu GDuan H.

PLoS One. 2019 Oct 30;14(10):e0223786. doi: 10.1371/journal.pone.0223786. eCollection 2019.

Abstract

Like other important cereal crop in modern agricultural production, maize is also threatened by drought. And the drought stress during maize filling stage will directly affect the quality (protein or oil concentration) and also the weight of grain. Therefore, different from previous studies focusing on inbred lines and pot experiment at seedling stage, current study selected filling stage of the adult plant and planting maize in the experimental field. Two hybrids cultivars with different drought tolerant were used for drought and water treatment respectively. We performed transcriptome sequencing analysis of 4 groups, 12 samples, and obtained 651.08 million raw reads. Then the data were further processed by mapping to a reference genome, GO annotation, enrichment analysis and so on. Among them we focus on the different change trends of water treatment and drought treatment, and the different responses of two drought-tolerant cultivars to drought treatment. Through the analysis, several transcripts which encode nitrogen metabolic, protein phosphorylation, MYB,AP2/ERF, HB transcriptional factor, O-glycosyl hydrolases and organic acid metabolic process were implicated with maize drought stress. Our data will offer insights of the identification of genes involved in maize drought stress tolerance, which provides a theoretical basis for maize drought resistance breeding.

 

See https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0223786

Figure 1: Two maize cultivars of ears and plants after drought and water treatment respectively, on the left is drought treatment, on the right is the water treatment.

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