Glucosinolates and Resistance to Leptosphaeria maculans in Wild and Cultivated Brassica Species |
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| Authors: | R F Mithen R Magrath |
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| Institution: | Brassica and Oilseeds Research Department, Cambridge Laboratory, Institute of Plant Science Research, John Innes Centre, Colney Lane, Norwich NR4 7UJ, Great Britain |
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| Abstract: | Synthetic lines of Brassica napus were derived by combining the genomes of B. atlantica and B. oleracea var. alboglabra, which were respectively resistant and susceptible to foliar infection by Leptosphaeria maculans, with a susceptible line of B. rapa. Resistance was expressed in the synthetic lines containing the genome of B. atlantica. The high levels of alkenyl glucosinolates which occur in leaves of B. atlantica, and which have been implicated in disease resistance, were also expressed within the synthetic lines, although the dominant glucosinolate had changed from sinigrin to glucobrassicanapin. Disease resistance and glucosinolate profiles did not co-segregate in F2 progeny from crosses between the synthetic lines. |
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| Keywords: | Brassica atlantica B napus Leptosphaeria maculans embryo rescue resynth-esized rapeseed disease resistance glucosinolates |
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