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. 1994 Oct;89(4):459-66.
doi: 10.1007/BF00225381.

Long-range organization of a satellite DNA family flanking the beet cyst nematode resistance locus (Hs1) on chromosome-1 of B. patellaris and B. procumbens

E M Salentijn  1 , N N Sandal, R Klein-Lankhorst, W Lange, T S De Bock, K A Marcker, W J Stiekema
Affiliations

Long-range organization of a satellite DNA family flanking the beet cyst nematode resistance locus (Hs1) on chromosome-1 of B. patellaris and B. procumbens

E M Salentijn et al. Theor Appl Genet. 1994 Oct.

Abstract

New members of a satellite DNA family (Sat 121), specific for wild beets of the section Procumbentes of the genus Beta, were isolated. Sequence analysis showed that the members of Sat-121 fall into two distinct classes. The organization of Sat-121 in the vicinity of a beet cyst nematode (Heterodera schachtii Schm.) resistance locus (Hs1) in B. patellaris and B. procumbens was investigated by pulsed-field gel electrophoresis (PFGE) using DNA from a series of resistant monosomic fragment additions, each containing an extra chromosome fragment of B. patellaris chromosome-1 (pat-1) in B. vulgaris. In this way several clusters of Sat-121 flanking the Hs1 (pat-1) locus were identified. In nematode resistant diploid introgressions (2n=18), which contain small segments of B. procumbens chromosome-1 (pro-1) in B. vulgaris, only two major Sat-121 clusters were detected near the Hs1 (pro-1) locus.

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