Symbiotic characteristics of a Rhizobium-specific annual medic, Medicago rigidula (L.) All

Brockwell, J; Holliday, Rosemary A.; Daoud, Deifallah M.; Materon, L. A.

doi:10.1016/0038-0717(88)90140-x

Cited by 16 publications

(5 citation statements)

References 14 publications

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“…Plants were inoculated with three S. meliloti strains: one reference (RCR2011) (Brockwell et al 1988) and two native (TII7 and E4) (Zribi et al 2004) strains. Bacterial strains were maintained at −80°C in 25% glycerol.…”

Section: Methodsmentioning

confidence: 99%

Interaction between Medicago truncatula lines and Sinorhizobium meliloti strains for symbiotic efficiency and nodule antioxidant activities

Mhadhbi

Jebara

Limam

et al. 2005

Physiologia Plantarum

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The relationships between symbiotic performance and nodular antioxidant enzymes were studied for the associations between three Medicago truncatula lines and three Sinorhizobium meliloti strains. The results showed that the variability in symbiotic efficiency was dependent on the bacterial partner, host plant and their interaction. The contribution of each factor to the total amount of variance differed with the measured parameter. The aerial biomass production and nitrogen‐fixing capacity were affected similarly by the three factors, whereas root and nodule biomass and catalase (CAT, E.C. 1.11.1.6), guaiacol peroxidase (POX, E.C. 1.11.1.7) and ascorbate peroxidase (APX, E.C. 1.11.1.11) antioxidant activities were mainly influenced by the M. truncatula line. The nodule number was dependent on the bacterial strain, and superoxide dismutase (SOD, E.C. 1.15.1.1) was dependent mainly on the plant–rhizobium interaction. A highly significant correlation was found between nitrogen‐fixing activity, shoot biomass production, total nodule protein content and catalase activity. The other nodular antioxidant enzymes were differentially expressed between associations and showed no clear correlation with symbiotic efficiency.

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Section: Methodsmentioning

confidence: 99%

Interaction between Medicago truncatula lines and Sinorhizobium meliloti strains for symbiotic efficiency and nodule antioxidant activities

Mhadhbi

Jebara

Limam

et al. 2005

Physiologia Plantarum

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“…It is therefore important to inoculate seeds with relevant strains of bacteria before sowing especially if the crop is to be grown for the first time on the land. Inoculation responses are associated primarily with the first planting of a legume in soil having no prior history of the crop [4][5][6]. In any case, to get the maximum benefit out of inoculation there is a need to follow correct and careful inoculation procedures, and the inoculant should carry live and effective bacterial cells.…”

Section: Isrn Agronomymentioning

confidence: 99%

Effects of Inoculation by Bradyrhizobium japonicum Strains on Nodulation, Nitrogen Fixation, and Yield of Soybean (Glycine max L. Merill) Varieties on Nitisols of Bako, Western Ethiopia

2012

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A field experiment was conducted during the 2005/6 growing season to assess the effect of Bradyrhizobium japonicum strains on the performance of soybean varieties. The field experiment was conducted at Bako ATVET College, West Shoa, Ethiopia. Three varieties of soybean (Jalele, Cheri, and Ethio-Yugoslavia) and two strains of Bradyrhizobium japonicum (TAL 378 and TAL 379) along with one uninoculated treatment were laid out in a randomized complete block design with nine variety and strain combinations and three replications. Inoculated and uninoculated seeds of soybean were planted on prepared beds. All the nodulation parameters, namely, nodulation rating, nodule number per plant, nodule volume per plant, and nodule dry weight were significantly influenced by the main effect of Bradyrhizobium japonicum strains alone. The main effect of soybean variety did not affect these parameters significantly. The dry matter production and nitrogen uptake at midflowering were highly significantly () affected by the main effects of both variety and strain. The yield and the yield components such as number of pods per plant, number of seeds per pod, seed yield, thousand seed weight, above-ground dry biomass, and total nitrogen uptake were highly significantly () affected by inoculation of Bradyrhizobium strains alone. A yield increase of 53.2% was obtained due to inoculation of TAL 379 over the uninoculated control. The variety effect was also significant () on number of pods per plant, seed yield, thousand seed weight, harvest index, and total nitrogen uptake. Variety and Bradyrhizobium strain interaction was detected on number of nodules per plant and nodule dry weight.

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“…The efficiency of inoculation is influenced by the competitiveness and quantity of indigenous sinorhizobia (Brockwell and Holliday, 1988). When a legume is cultivated in a field where it has been grown previously, sufficient effective sinorhizobia are usually present.…”

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confidence: 99%

Inoculation and Nitrogen Affect Herbage and Symbiotic Properties of Annual Medicago Species

et al. 1998

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The interactive effects of Sinorhizobium inoculants and soil N status should affect the N contribution of annual medics (Medicago spp.) in cropping systems. We determined the effect of N and commercial medic inoculum on nodulation, dry matter, and N yield of annual medics and also determined Sinorhizobium strain occupancy in annual medic nodules. Field experiments were conducted on a sandy, mixed Udorthentic Haploboroll and on a fine‐loamy, mixed, mesic Typic Hapludalf. More than 75% of annual medic plants (except M. rugosa Desr.) were nodulated in the absence of commercial inoculum, and nodulation was due in part to a Sinorhizobium strain that frequently nodulates alfalfa (Medicago sativa L.). Among the five strains in the commercial medic inoculum, 102G3 and 102A13 had the greatest nodule occupancy. When no N was applied, inoculation improved the percentage of plants nodulated and nodule mass only in M. rugosa, compared with no inoculation, but inoculation increased herbage yields of spring‐seeded M. truncatula Gaertn. cv. Sephi, M. polymorpha L., and M. rugosa by about 60%, compared with no inoculation. Nitrogen addition reduced the nodule mass of all species when inoculum was applied, and N addition increased only the herbage dry matter yield of spring‐seeded M. scutellata (L.) Mill. when inoculum was applied. This suggests that a more effective inoculum could be developed for M. scutellata so that N would not limit herbage growth. Annual medics fixed from 40 to 80 kg N ha−1 if spring‐seeded and grown for 60. d, and from 20 to 50 kg N ha−1 if summer‐seeded and grown for 43 d.

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Symbiotic characteristics of a Rhizobium-specific annual medic, Medicago rigidula (L.) All

Cited by 16 publications

References 14 publications

Interaction between Medicago truncatula lines and Sinorhizobium meliloti strains for symbiotic efficiency and nodule antioxidant activities

Interaction between Medicago truncatula lines and Sinorhizobium meliloti strains for symbiotic efficiency and nodule antioxidant activities

Effects of Inoculation by Bradyrhizobium japonicum Strains on Nodulation, Nitrogen Fixation, and Yield of Soybean (Glycine max L. Merill) Varieties on Nitisols of Bako, Western Ethiopia

Inoculation and Nitrogen Affect Herbage and Symbiotic Properties of Annual Medicago Species

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