Salinity tolerance of Rhizobium mutants

Growth and relative efficiency of symbiotic nitrogen fixation

Raman Rai, V. Prasad

Research output: Contribution to journalArticle

23 Citations (Scopus)

Abstract

A salinity-tolerant strains of Rhizohium able to grow and fix nitrogen in symbiosis with lentil (Lens esculenta) in saline soil was derived frorn effective Rhizobium strain RL 5. A forced mutation with the mutagen nitrosoguanidine resulted in the isolation of five different mutant strains. The salinity tolerance, streptomycin resistance, growth, nodulation behaviour and relative efficiency of symbiotic N2-fixation of these strains were studied. Among the five mutants and parent, LM 4 and LM 1 successfully tolerated 200 μ g ml-1 streptomycin and 1.5%NaCl. These two mutants also significantly increased number and dry weight of nodules per plant, dry matter yield of the crop and N2-fixation. Between the two, LM 4 seemed generally the better.

Original languageEnglish
Pages (from-to)217-219
Number of pages3
JournalSoil Biology and Biochemistry
Volume15
Issue number2
DOIs
Publication statusPublished - 01-01-1983
Externally publishedYes

Fingerprint

Nitrogen Fixation
Rhizobium
salinity tolerance
Salinity
Streptomycin
nitrogen fixation
rhizobacterium
Nitrosoguanidines
salinity
Lens Plant
mutants
fixation
Symbiosis
Mutagens
Growth
streptomycin
Lenses
Nitrogen
Soil
saline soil

All Science Journal Classification (ASJC) codes

  • Microbiology
  • Soil Science

Cite this

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abstract = "A salinity-tolerant strains of Rhizohium able to grow and fix nitrogen in symbiosis with lentil (Lens esculenta) in saline soil was derived frorn effective Rhizobium strain RL 5. A forced mutation with the mutagen nitrosoguanidine resulted in the isolation of five different mutant strains. The salinity tolerance, streptomycin resistance, growth, nodulation behaviour and relative efficiency of symbiotic N2-fixation of these strains were studied. Among the five mutants and parent, LM 4 and LM 1 successfully tolerated 200 μ g ml-1 streptomycin and 1.5{\%}NaCl. These two mutants also significantly increased number and dry weight of nodules per plant, dry matter yield of the crop and N2-fixation. Between the two, LM 4 seemed generally the better.",
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Salinity tolerance of Rhizobium mutants : Growth and relative efficiency of symbiotic nitrogen fixation. / Rai, Raman; Prasad, V.

In: Soil Biology and Biochemistry, Vol. 15, No. 2, 01.01.1983, p. 217-219.

Research output: Contribution to journalArticle

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