Efficacy of a Plant-Microbe System: Pisum sativum (L.) Cadmium-Tolerant Mutant and Rhizobium leguminosarum Strains, Expressing Pea Metallothionein Genes PsMT1 and PsMT2, for Cadmium Phytoremediation

Symbiotic nitrogen fixation was examined in 36 plant genotype-bacterial strain combinations produced by growing six genotypes of Pisum sativum L. and six strains of Rhizobium leguminosarum in all combinations. Both genotypes and strains had effects not only on nitrogen fixation but also on characters associated with plant growth and photosynthesis. However, relationships between characters differed markedly depending on whether genotype or strain means were used to calculate correlation coefficients. Genotype × strain (G × S) interactions also affected the expression of several of the characters. Using nitrogen fixation as an example, statistical methods analogous to those developed for the analysis of genotype × environment interactions were used to study this interaction. From this analysis it was apparent that the G × S variability was mainly caused by differences in the magnitude of the response of plant genotypes or bacterial strains to changes in the complementary symbiont with little difference in the stability of this response. An examination of different indicators of performance, response, and stability of that response, suggests that both plant genotypes and bacterial strains could be selected for relatively uniform fixation over a range of symbiotic partners, or that specific combinations could be selected for maximum symbiotic effectiveness.Key words: Genotype × strain, N2 fixation, photosynthesis, respiration, growth

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Hydrogen Recycling by Rhizobium leguminosarum Isolates and Growth and Nitrogen Contents of Pea Plants (Pisum sativum L.) †

Applied and Environmental Microbiology ◽

10.1128/aem.45.3.856-861.1983 ◽

1983 ◽

Vol 45 (3) ◽

pp. 856-861 ◽

Cited By ~ 24

Author(s):

Louise M. Nelson

Keyword(s):

Pisum Sativum ◽

Rhizobium Leguminosarum ◽

Pisum Sativum L ◽

Nitrogen Contents

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Temperature Tolerant Rhizobium leguminosarum bv. viciae Strains with Plant Growth Promotion Traits

Journal of Pure and Applied Microbiology ◽

10.22207/jpam.14.4.36 ◽

2020 ◽

Vol 14 (4) ◽

pp. 2603-2609

Author(s):

Arun Kumar Patel ◽

Umakant Banjare ◽

Ajjo Kumari ◽

Ramesh Kumar Singh ◽

Kapil Deo Pandey

Keyword(s):

Calcium Phosphate ◽

Pisum Sativum ◽

Plant Growth ◽

Plant Growth Promotion ◽

Rhizobium Leguminosarum ◽

Root Nodule ◽

Growth Promotion ◽

Rhizobium Strain ◽

Pisum Sativum L ◽

Different Temperatures

Rhizobacteria (PGPR) that promote the plant growth are essential component of sustainable agriculture. Pea (Pisum sativum L.) root nodule Rhizobium leguminosarum bv. viciae ten strains were cultured at two different temperatures (28°C and 45°C). Out of eight strains screened the three N25, N30 and N40 were temperature tolerant while only one strain (N40) showed tolerance to pH11. The growth of Rhizobium strain N40 at 45 °C was 96.8 percent as compared to the growth of the at 28°C. The temperature tolerant strain N40 produced maximum IAA and solubilized insoluble tri calcium phosphate compared to other strains and thus can be used microbial inoculant in biofertilizer technology.

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