242(1) The third sentence of the abstract should read: It was found that wild species of Medicago , Melilotus , and Trigonella preferably formed symbioses with salttolerant root-nodule bacteria in both salinized and nonsalinized soils.(2) On p. 78, left column, the last sentence of the first paragraph should read: Species identification of the natural isolates was performed by amplified 16S ribosomal DNA restriction analysis (ARDRA) as in [13].(3) On p. 80, right column, second paragraph, the first sentence should read: Another problem was the correlation between the salt tolerance of the N and T isolates and their symbiotic efficiency in the presence of salt.
Sinorhizoboium meliloti populations native to the 4 distinct gene centers (GC) of alfalfa were explored toward the tolerance to salinity, cryptic plasmid profiles and symbiotic properties. The significant correlations detected among nodule (N) and trapped (T) isolates related to the similar or distinct populations. more than 60 % N- and 77 % T-isolates tolerant to 3,5 % NaCl; salt tolerant N-isolates formed effective symbiosis with Medicago sativa and M. truncatula significantly more often. Isolates native to the GC area next to aral Sea had possessed the reduced level of salt tolerance in comparison with the isolates originated from Central asian, North-Caucasian and Europe-Siberian GC; that, has related to adaptation processes, which have ensured their viability in extremely salted soils.<img src="http://elibrary.ru/pic/1pix.gif" />
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