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Comparative transcriptome analysis of Zea mays upon mechanical wounding.
Megha Kumari1,2, Shrishti Naidu1,2, Babita Kumari1,3
1Department of Botany, Hansraj College, University of Delhi, Delhi, India.
Molecular Biology Reports
|May 8, 2023
Summary
Mechanical wounding significantly alters maize gene expression, with hundreds of genes showing differential expression. This response is crucial for plant stress tolerance and offers targets for crop improvement.
Area of Science:
- Plant Science
- Molecular Biology
- Genomics
Background:
- Mechanical wounding (MW) from environmental factors and pests damages crops.
- Plants activate defense mechanisms by altering gene, protein, and metabolite expression to cope with MW stress.
Purpose of the Study:
- To characterize the maize transcriptome response to mechanical wounding.
- To identify key genes involved in plant stress tolerance.
Main Methods:
- Microarray analysis was used to examine gene expression in maize subjected to mechanical wounding.
Main Results:
- 407 differentially expressed genes (DEGs) were identified: 134 upregulated and 273 downregulated.
- Upregulated genes are involved in stress responses (salicylic acid, auxin, jasmonates, biotic/abiotic stress), protein synthesis, and transport.
- Downregulated genes are associated with primary metabolism, development, and DNA repair.
Conclusions:
- Transcriptome data provides insights into inducible transcriptional responses to mechanical injury.
- Identified key genes (e.g., Bowman Bird trypsin inhibitor, NBS-LRR-like protein) are potential targets for genetic engineering to enhance crop stress tolerance.
