Abstract:
There are 20 000 to 25 000 protein-coding genes in typical crop plants like maize and soybean. The collection of traits displayed (phenotype) depends on the genes present in a genome (genotype). The appearance of specific traits depends on many factors, including whether the gene(s) responsible for the trait is/are expressed or non-expressed, the cell specificity of the expressed genes, and how the gene products interact with environmental factors. Molecular marker-assisted breeding (MAS) technology may be useful to survey heat tolerance in various genotypes, including landraces and wild relatives of cereals. In addition, the comparison of quantitative trait loci (QTLs) linked to stress tolerance in various cereals may help identify common loci or genes linked to drought and heat tolerance. The understanding and potential manipulation of the mechanisms of thermotolerance and response to stresses in cereals, either by transgenic approaches or by molecular breeding, will rely on further achievements in genomics, proteomics and metabolic profiling.
Abstract:
There are 20 000 to 25 000 protein-coding genes in typical crop plants like maize and soybean. The collection of traits displayed (phenotype) depends on the genes present in a genome (genotype). The appearance of specific traits depends on many factors, including whether the gene(s) responsible for the trait is/are expressed or non-expressed, the cell specificity of the expressed genes, and how the gene products interact with environmental factors. Molecular marker-assisted breeding (MAS) technology may be useful to survey heat tolerance in various genotypes, including landraces and wild relatives of cereals. In addition, the comparison of quantitative trait loci (QTLs) linked to stress tolerance in various cereals may help identify common loci or genes linked to drought and heat tolerance. The understanding and potential manipulation of the mechanisms of thermotolerance and response to stresses in cereals, either by transgenic approaches or by molecular breeding, will rely on further achievements in genomics, proteomics and metabolic profiling.
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