Metabolomics,Unknown,Transcriptomics,Genomics,Proteomics

Dataset Information

Genome-wide expression of transcriptomes under waterlogging stress condition in subtropical maize

ABSTRACT: Genome-wide transcriptome analysis was performed to understand the expression pattern of transcriptomes in tolerant and susceptible subtropical maize genotypes under waterlogging stress condition. Waterlogging stress causes yield reduction in maize (Zea mays). It is important to dissect the genetic circuits that underlie the plant responses to waterlogging. So, the experiment was designed with the following objectives: to understand the expression pattern of transcriptomes in the tolerant and the susceptible genotypes under waterlogging stress; to identify DEGs functioning in important pathways underlying adaptive traits; to co-map bin locations of the transcriptomes with already known QTLs for waterlogging and find synteny with other species; and to generate gene co-expression networks to study cohorts of genes expressed together in modules and functional cluster, while comparing the two genotypes. Two tropical maize (Zea mays L.) inbred lines, HKI1105 (tolerant) and V-372 (susceptible), were used for our experiment. The genotypes were sown in plastic pots filled with loam soil with sandy texture. The plants were watered daily to soil capacity until the application of stress at 28 days after sowing. To impose waterlogging condition, the perforation in the bottom of the pots (35 cm in height) was sealed and the stress treatment was given by watering the pots (5 cm standing water) for seven continuous days. To allow for recovery from stress, the perforations of the pots were unsealed for proper drainage of excess water. The root samples from both genotypes were collected on the 28th, 32nd, 35th and 42nd day after sowing, which represented control, moderate stress, severe stress and post-stress recovery stages, respectively. Two biological replications were used for each comparison.

ORGANISM(S): Zea mays

SUBMITTER: Nepolean Thirunavukkarasu

PROVIDER: E-GEOD-43088 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

ACCESS DATA

Publications

Genome-wide expression of transcriptomes and their co-expression pattern in subtropical maize (Zea mays L.) under waterlogging stress.

Thirunavukkarasu Nepolean N Hossain Firoz F Mohan Sweta S Shiriga Kaliyugam K Mittal Swati S Sharma Rinku R Singh Rita Kumari RK Gupta Hari Shankar HS

PloS one 20130806 8

Waterlogging causes extensive damage to maize crops in tropical and subtropical regions. The identification of tolerance genes and their interactions at the molecular level will be helpful to engineer tolerant genotypes. A whole-genome transcriptome assay revealed the specific role of genes in response to waterlogging stress in susceptible and tolerant genotypes. Genes involved in the synthesis of ethylene and auxin, cell wall metabolism, activation of G-proteins and formation of aerenchyma and ...[more]

PMID: 23936429

Similar Datasets

Project description:Drought stress is a major problem around the world and although progress in understanding how vegetable crops and model plants adapt to drought have been made, there is still little information about how fruit crops deal with moderate drought stress. In this study, we investigated the response of two apple genotypes: a drought-sensitive genotype (M26) and a drought-tolerant genotype (MBB). Our results of the morphology, physiology and biochemistry under moderate drought stress, indicated that relative water content (RWC) and leaf area (LA) were not significant changes in two genotypes. However, it had larger leaf mass per area (LMA), and accumulated higher free proline (CFP), soluble sugars (CSS) and malonaldehyde (MDA) in the leaves. Thus, it appears that the MBB genotype could produce more osmosis-regulating substances. Phosphoproteomic was analyzed from leaves of both genotypes under moderate drought stress using the isobaric tags for relative and absolute quantification (iTRAQ) technology. A total of 595 unique phosphopeptides, 682 phosphorylated sites and 446 phosphoproteins were quantitatively analyzed in the two genotypes. Motif analyses of the phosphorylation sites showed that six motifs including [PxsP], [sP], [sD], [Rxxs], [sxP] and [sxs] were enriched. We identified 12 and 48 PLSC phosphoproteins in M26 and MBB, respectively. Among these, 9 PLSC phosphoproteins were common to both genotypes, perhaps indicating a partial overlaps of the mechanisms to moderate drought stress. Gene ontology analyses revealed that the PLSC phosphoproteins present a unique combination of metabolism, transcription, translation and protein processing, suggesting that the response in apple to moderate drought stress encompasses a new homeostasis of major cellular processes. The basic trend was an increase in protein abundance related to drought and organic substance upon moderate drought stress between two genotypes. These increases were higher in the drought-tolerant genotype (MBB) than in the drought-sensitive genotype (M26). The 23 differentially expressed mRNA encoding phosphoproteins were analysis by quantitative real-time PCR (qRT-PCR). Our study is the first to address the phosphoproteome of a major fruit crop, apple rootstocks, in response to moderate drought stress, and provide insights into the molecular regulation mechanisms of apple rootstock under moderate drought stress.

Dataset Information

Genome-wide expression of transcriptomes under waterlogging stress condition in subtropical maize

Publications

Genome-wide expression of transcriptomes and their co-expression pattern in subtropical maize (Zea mays L.) under waterlogging stress.

Similar Datasets

OmicsDI is part of the ELIXIR infrastructure