47. 根寄生植物-宿主植物間相互作用の分子解析(I) : ストライガの寄生に対するソルガムの応答

概要

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Striga spp., root parasites of poaceous plants, devastate cereal production in the semiarid Sub Saharan Africa. The life cycle of the parasite is strongly cued to that of its host and is modulated by host-derived chemical signals. To germinate Striga seeds require conditioning in a warm moist environment and exposure to host derived stimulants, collectively named strigolactones. In this study, host-parasite interactions were analyzed at the molecular level. DNA sequences of clones, isolated by a suppression subtractive hybridization strategy from Striga-parasitized sorghum, were homologous to genes for fatty acid desaturase of maize, heat shock protein 82 of rice, calcium dependent protein kinase of maize and sorghum ESTs induced by biotic and abiotic stresses, including wound, pathogen-infection and oxidative stress.
2005-10-13