作者: R. Tiburzy , U. Noll , H.J. Reisener
DOI: 10.1016/0885-5765(90)90099-J
关键词: Biology 、 Haustorium 、 Botany 、 Mycosis 、 Histology 、 Molecular biology 、 Puccinia 、 Gene 、 Stem rust 、 DIMBOA 、 Inoculation
摘要: Abstract Seedlings of six wheat ( Triticum aestivum L.) lines containing the Sr 5 gene for resistance to stem rust were inoculated with urediospores Puccinia graminis f.sp. tritici , race 32, which carries P avirulence, and primary leaves examined temporal relation between hypersensitive reaction (HR) fungal growth. In up 95% all infection sites first host cell that was penetrated by a haustorium an epidermal cell. Infected mesophyll cells reacted hypersensitively accumulation yellow autofluorescing compounds. Fungal hyphae associated intensely developed not more than one, two, or three haustorial mother (HMCs). Significant inhibition growth in Prelude- Sr5 occurred after formation haustorium, at time when number necrotic rapidly increased from 11 36·5 %. The interval appearance HR first-invaded varied 4·6 8·1 h, depending on line used. cvs. Napayo 5, 6, 7 11) Manitou 9 g 12) relative indicating expression is modified additional genes these cultivars. data demonstrate controlled closely infected cells.