Inhibition of legume nodule formation and N<sub>2</sub>fixation by nitrate

Streeter, John G.; Wong, Peter P.

doi:10.1080/07352688809382257

Cited by 626 publications

(494 citation statements)

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“…The addition of N fertilizer typically inhibits N # fixation through a reduction in nodule initiation, nodule development and specific nodule activity (reviewed by Streeter, 1988). We found that biomass production of Gliricidia seedlings was generally insensitive to N fertilization, whereas N source partitioning changed dramatically with fertilization.…”

Section: Research Interactive Effects Of Co # and Soil N On N # -Fixamentioning

confidence: 88%

“…One negative effect of soil N is the reduction in the infection of legume root hairs by rhizobia, which is most easily measured as the number of nodules per plant (Streeter, 1988). We found that nodule number on a Gliricidia seedling grown at ambient CO # was less sensitive to substrate N than total nodule mass or specific nitrogenase activity (estimated using acetylene reduction), but more sensitive to substrate N than the rate of N # fixation (estimated using the "&N dilution method).…”

Section: Research Interactive Effects Of Co # and Soil N On N # -Fixamentioning

confidence: 99%

“…Greatest nodule activity occurs when N in the soil is available in amounts that are sufficient for vigorous plant growth before nodules can begin to produce N (Minchin et al, 1981). High levels of soil N, however, may inhibit nodule initiation, nodule size and specific N # -fixing activity (reviewed by Streeter, 1988). Thus, the ability of symbiotic N # -fixing species to contribute to N inputs into ecosystems, as well as the potential for CO # stimulation of N inputs, will be dependent on soil N that is available for plant productivity.…”

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confidence: 99%

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Nitrogen inhibition of nodulation and N₂ fixation of a tropical N₂‐fixing tree (Gliricidia sepium) grown in elevated atmospheric CO₂

2000

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Interactive effects of elevated atmospheric CO# and soil N availability on N # fixation and biomass production were examined using Gliricidia sepium, a tropical leguminous tree species. Our objective was to determine if elevated CO # alters the inhibitory effects of soil N on N # fixation, and whether the response of Gliricidia to elevated CO # was a function of N source originating from either substrate N fertilizer or N # fixation. We hypothesized that CO # enrichment would ameliorate the inhibitory effects of N fertilization on seedling nodulation and N # fixation through increased C partitioning to nodules. Seedlings were grown from seed for 100 d in growth chambers at either 350 or 700 µmol mol −" CO # . Seedlings were inoculated with Rhizobium spp. and grown either with 0, 1 or 10 mM N fertilizer. The δ"&N isotope-dilution technique was used to determine N source partitioning between N # fixation and inorganic N fertilizer uptake. The addition of 10 mM N fertilizer significantly reduced nodule number and mass, specific nitrogenase activity, the specific rate of N # fixation, and the proportion of plant N derived from N # fixation. Elevated CO # , however, strongly ameliorated the inhibitory effects of N fertilization, indicating that increased C availability for nodule activity may partially offset the inhibition of N # fixation caused by substrate N, as nodule sugar concentrations were stimulated with CO # enrichment. This study clearly shows that elevated CO # enhanced plant productivity and net N content of Gliricidia tree seedlings by stimulating N # fixation. In addition, seedling biomass production was greatly enhanced by elevated CO # , regardless of whether plant N was derived from the substrate or from the atmosphere. We conclude from this study that CO # enrichment mitigates the inhibitory effects of substrate N on nodule initiation and development and specific N # fixation, either through increased C allocation to nodule production and activity, or through increased N demand by the plant for biomass production. This experiment with Gliricidia provides evidence for a positive feedback between increased atmospheric CO # concentrations, C allocation to symbiotic N # -fixing bacteria, and plant C and N accumulation that may occur when N # -fixing plants are grown under conditions where substrate N may typically inhibit N # fixation.

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Section: Research Interactive Effects Of Co # and Soil N On N # -Fixamentioning

confidence: 88%

Section: Research Interactive Effects Of Co # and Soil N On N # -Fixamentioning

confidence: 99%

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confidence: 99%

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Nitrogen inhibition of nodulation and N₂ fixation of a tropical N₂‐fixing tree (Gliricidia sepium) grown in elevated atmospheric CO₂

2000

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“…Streeter (1988) showed that NO À 3 concentrations greater than 2 mM decreased legume nodule growth and N 2 fixation activity. Nodulation was inhibited by hairy vetch foliage application in NAS and SDR.…”

Section: Soybean Nodulation and Nitrogen (N 2 ) Fixationmentioning

confidence: 99%

“…Soil fertility increases by applying organic matter such as compost and green manure. However, soybean nodulation and N 2 fixation are strongly restricted if a large amount of inorganic nitrogen is released as a result of organic matter application (Streeter 1988). Consequently, it is difficult to increase soybean yield by applying organic matter, although it can promote the growth of soybean.…”

Section: Introductionmentioning

confidence: 99%

Effects of hairy vetch foliage application on nodulation and nitrogen fixation in soybean cultivated in three soil types

Sato

Takakai

et al. 2011

Soil Science and Plant Nutrition

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We investigated the effects of applying hairy vetch foliage on nodulation and atmospheric nitrogen (N 2 ) fixation in soybean cultivated in three soil types in pot experiments. Soybean plants were grown in Gley Lowland soil (GLS), Non-allophanic Andosol (NAS), and Sand-dune Regosol (SDR) with hairy vetch foliage application in a greenhouse for 45 days. In GLS, the nodule number was not influenced by the application, however, nodule dry weight and N 2 fixation activity tended to increase. In NAS and SDR, nodule formation was depressed by foliage application. Soybean plant growth was promoted in GLS and SDR but not in NAS. These promotive effects of hairy vetch foliage application on soybean plant growth in GLS were considered to be mainly caused by the increase in N 2 fixation activity of the nodules, whereas it was considered to be mainly caused by the increase in nitrogen uptake activity of the roots in SDR. The varying effects of hairy vetch foliage application on soybean nodulation may be due to soil chemical properties such as pH and cation exchange capacity, which are related to soil texture. Therefore, we conclude that it is important to use hairy vetch for soybean cultivation based on the different effects of hairy vetch on soybean plant growth in different soil types.

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Lumichrome: A Bacterial Signal Molecule Influencing Plant Growth

Dakora

2015

Biological Nitrogen Fixation

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Inhibition of legume nodule formation and N₂fixation by nitrate

Cited by 626 publications

References 172 publications

Nitrogen inhibition of nodulation and N₂ fixation of a tropical N₂‐fixing tree (Gliricidia sepium) grown in elevated atmospheric CO₂

Nitrogen inhibition of nodulation and N₂ fixation of a tropical N₂‐fixing tree (Gliricidia sepium) grown in elevated atmospheric CO₂

Effects of hairy vetch foliage application on nodulation and nitrogen fixation in soybean cultivated in three soil types

Lumichrome: A Bacterial Signal Molecule Influencing Plant Growth

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Inhibition of legume nodule formation and N2fixation by nitrate

Cited by 626 publications

References 172 publications

Nitrogen inhibition of nodulation and N2 fixation of a tropical N2‐fixing tree (Gliricidia sepium) grown in elevated atmospheric CO2

Nitrogen inhibition of nodulation and N2 fixation of a tropical N2‐fixing tree (Gliricidia sepium) grown in elevated atmospheric CO2

Effects of hairy vetch foliage application on nodulation and nitrogen fixation in soybean cultivated in three soil types

Lumichrome: A Bacterial Signal Molecule Influencing Plant Growth

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Product

Resources

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Inhibition of legume nodule formation and N₂fixation by nitrate

Nitrogen inhibition of nodulation and N₂ fixation of a tropical N₂‐fixing tree (Gliricidia sepium) grown in elevated atmospheric CO₂

Nitrogen inhibition of nodulation and N₂ fixation of a tropical N₂‐fixing tree (Gliricidia sepium) grown in elevated atmospheric CO₂