Journal of Plant Physiology & PathologyISSN: 2329-955X

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Metabolomic approach to resistance of Avena species to Fusarium head blight (FHB)


Igor G Loskutov

N I Vavilov Institute of Plant Genetic Resources, Russia
St-Petersburg State University, Russia

: J Plant Physiol Pathol

Abstract


Creation of new agricultural crop cultivars possessing a complex of important traits, high yielding ability and product quality under different environmental conditions requires the well-studied initial material. A potentially high grain yield of agricultural crops should be combined with other economically important traits and resistance to biotic and abiotic factors. Diseases not only suppress plants and reduce the size of grains and yields per unit area, but also deteriorate the yield quality through the accumulation of pathogens waste products. Mycotoxins decrease the cost and consumption properties of oat grain and adversely influence human and animal health. Complex field and laboratory evaluation of accessions of cultivated and wild species of Avena collection VIR showed these results. Infection of Fusarium fungi was detected in analyzed oat accessions. Average grain infestation ranged from 6.1 to 18.7%, the maximum value was 64.0%. The group of relatively resistant genotypes to Fusarium infection and to accumulation mycotoxins was found. The assessment of large genetic diversity of wild Avena species by using DNA testing was shown. These indicators were linked to each other and to grain infection with Fusarium head blight. Metabolomics spectra of seeds of wild and cultivated oat species were investigated. The kernels of wild and cultivated species displayed the highest values for protein, for oil and for other biochemical components. Content and composition of organic and fatty acids, amino acids, polyatomic alcohols and sugar were analyzed. Positive correlations have been found to reliably exist between the studied kernel metabolomics spectra, Fusarium head blight resistance and mycotoxins accumulation.

Biography


Email: i.loskutov@vir.nw.ru

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