Study of nitrogen metabolism in wheat after infection with mildew. I. Changes in total nitrogen and protein and nonprotein nitrogen in the varieties Carsten V, Axminster and C.I.12633 infected with race 3 of Erysiphe graminis DC. sp. tritici Marchal
Kunovski, Z.; Bak"rdzhiev, S.
Rasteniev'dni Nauki 8(4): 115-124
Changes were studied in the leaves of young plants of the varieties CI12633 (resistant), Carsten V (susceptible) and Axminster (highly susceptible) after they had been infected at the second-leaf stage. The contents of protein and nonprotein nitrogen in the leaves of all varieties decreased with ageing of the leaves. After infection, the resistant variety had a higher content of protein nitrogen and lower of nonprotein nitrogen than the susceptible varieties. Axminster had greater reductions in total protein and protein nitrogen than Carsten V. Changes in the nitrogen metabolism in CI12633 were observed only during the incubation period of the pathogen, while in the susceptible varieties the disorders in the nitrogen metabolism also affected later developed uninfected leaves besides those initially infected.