Light Intensity as an Inhibiting Factor in the Fixation of Atmospheric Nitrogen by Manchu Soybeans<sup>1</sup>

Orcutt, F. S.; Fred, E. B.

doi:10.2134/agronj1935.00021962002700070008x

Cited by 30 publications

(12 citation statements)

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“…This phenomenon may be specific to soybean since it was not detected on peas transferred from 0.50 to 0.80 mmol photons m -2 ·s -1 (Sheikholeslam et al, 1980) or french beans transferred from 0.04 to 0.11 mmol photons m -2 ·s -1 (Antoniw and Sprent, 1978). Its mechanism is not known; it differs with the early limitation of young plant nodulation by excess light (Fred et al, 1938;Orcutt and Fred, 1935) which has recently been attributed to N limitation of legumes depending exclusively on N 2 fixation (Williams and Phillips, 1980 (Gaudillère et al, 1987).…”

Section: Discussionmentioning

confidence: 99%

Influence of photon flux density and fluctuation on the nitrogen fixing Glycine max (L Merr)-Bradyrhizobium japonicum symbiosis in a controlled environment

Drevon¹,

Gaudillere

Bernoud³

et al. 1991

Agronomie

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Summary — Nodulated soybeans, Glycine max (L Merr), were grown under 6 photon flux densities (PFD) from 0.35-1.03 mmol photons m -2 ·s -1 , in order to determine the optimal light intensity for symbiotic nitrogen fixation in controlled environment. The nitrogenase activity (C 2 H 2 reduction) was highest at 0.68 mmol photons m -2 ·s -1 which also corresponded to the highest growth of plants and the biggest mass of nodules. The specific acetylene reducing activity was not affected by PFD, (fig 1). L'activité nitrogénase (réduction de l'acé-tylène) est la plus élevée à 0,68 mmol(photons)·m -2 ·s -1 (fig 2), densité de flux de photons qui correspond également aux croissances de plante et aux masses modulaires les plus élevées (fig 1). L'activité spécifique de réduction de l'acétylène par les nodosités n'est pas affectée par la DFP, excepté à 1,03 mmol(photons)·m -2 ·s -1 pour laquelle elle est plus faible (fig 2). La diminution de la DFP n'a pas d'effet sur l'activité nitrogénase pendant au moins 24 h (fig 3). Au contraire une augmentation de la DFP provoque rapidement une diminution significative de l'activité nitrogénase (fig 3). Pour une même DFP, un éclairement périodique comparé à un éclairement stable induit une croissance et une activité nitrogénase plus faibles (fig 2). La photosynthèse détermine donc la masse nodulaire qui en retour détermine la vitesse de fixation de l'azote. Cependant, l'activité nitrogénase nodulaire n'est pas directement régulée par la photosynthèse simultanée, probablement du fait de l'existence de réserves de photosynthats et d'autres mécanismes de ré-gulation. Un excès de lumière inhibe spécifiquement la fixation d'azote.nitrogénase / nodule / photosynthèse / Rhizobium / Glycine max = soja Abbreviations : ARA, acetylene reducing activity; sARA, specific, ie per g nodule acetylene reducing activity; DW, dry weight; PFD, photon flux density.

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Section: Discussionmentioning

confidence: 99%

Influence of photon flux density and fluctuation on the nitrogen fixing Glycine max (L Merr)-Bradyrhizobium japonicum symbiosis in a controlled environment

Drevon¹,

Gaudillere

Bernoud³

et al. 1991

Agronomie

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“…There was some relationship between clover top-growth and large-nodule number in agreement with the work of Allos and Bartholomew (1) who found that fixation paralleled total growth of the legume. The relationship between carbohydrate supply and nodulation (12,18) is very important during the growth of a legume and increases in leaf area and photosynthesis have resulted in increased nitrogen fixation, provided that the carbohydrate-nitrogen balance in the plant remains favourable (8, 31). The effect of nitrogen in promoting and subsequently reversing the very favourable nodulation pattern in May was possibly due largely to its influence on plant growth.…”

Section: Chemical Analysismentioning

confidence: 99%

A Study of the Influence of Nitrogen on the Root Weight and Nodulation of White Clover in a Mixed Sward

Young

1958

Grass and Forage Science

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Experiments are described in which a study was made of the top growth, root weight, nodule number, and type of nodules of white clover growing in a grass sward in the field. Soil cores were taken and the clover root-system examined after removal of soil by washing.The most important factor governing the total number of nodules and the number of large (2 mm. or more in length) nodules under the sward was the amount of clover root-material present.Nitrogenous fertilisers and the return of dung and urine by grazing sheep reduced the amount of clover root-weight and consequently the number of nodules found under the pasture. 36 lb. of nitrogen applied in the early spring of 1956 had a beneficial effect on both clover top-growth and nodulation. 80-100 lb. of nitrogen per acre had no effect on the number of nodules per gram of root. However, the application of 200 lb. of nitrogen per acre caused a significant decrease in the number of large nodules F>er gram of root.The numbers of large nodules present reached a midsummer peak where nitrogen was not applied.During the autumn many nodules showed part green and part pink colouration or were completely green or brown, an indication of a decline in nitrogen-fixing ability. Decaying nodules increased considerably in number when the legume was being suppressed by nitrogen application and top growth was poor. The practical application of these results is discussed and methods of maximising the benefit from clover and fertiliser nitrogen are suggested.

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“…Other studies, however, have described exacerbated photo-oxidative damage to cells by high Fe concentration (Kim and Jung, 1993;Suh et al, 2002). In the case of soybeans, Orcutt and Fred (1935) reported hindered nodulation and growth in an Fe-deficient cultivar sown under HI typical of early summer. More recent investigations have indicated that increasing seeding rates, leading to enhanced leaf shading, ameliorated the negative consequences of deficient Fe on soybean growth (Wiersma, 2007).…”

Section: Discussionmentioning

confidence: 94%

Irradiance regulates genotype-specific responses of Rhizobium-nodulated soybean to increasing iron and two manganese concentrations in solution culture

Izaguirre‐Mayoral

Sinclair

2009

Journal of Plant Physiology

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Light Intensity as an Inhibiting Factor in the Fixation of Atmospheric Nitrogen by Manchu Soybeans¹

Cited by 30 publications

References 0 publications

Influence of photon flux density and fluctuation on the nitrogen fixing Glycine max (L Merr)-Bradyrhizobium japonicum symbiosis in a controlled environment

Influence of photon flux density and fluctuation on the nitrogen fixing Glycine max (L Merr)-Bradyrhizobium japonicum symbiosis in a controlled environment

A Study of the Influence of Nitrogen on the Root Weight and Nodulation of White Clover in a Mixed Sward

Irradiance regulates genotype-specific responses of Rhizobium-nodulated soybean to increasing iron and two manganese concentrations in solution culture

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Light Intensity as an Inhibiting Factor in the Fixation of Atmospheric Nitrogen by Manchu Soybeans1

Cited by 30 publications

References 0 publications

Influence of photon flux density and fluctuation on the nitrogen fixing Glycine max (L Merr)-Bradyrhizobium japonicum symbiosis in a controlled environment

Influence of photon flux density and fluctuation on the nitrogen fixing Glycine max (L Merr)-Bradyrhizobium japonicum symbiosis in a controlled environment

A Study of the Influence of Nitrogen on the Root Weight and Nodulation of White Clover in a Mixed Sward

Irradiance regulates genotype-specific responses of Rhizobium-nodulated soybean to increasing iron and two manganese concentrations in solution culture

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Light Intensity as an Inhibiting Factor in the Fixation of Atmospheric Nitrogen by Manchu Soybeans¹