Nitrogen fixation (15N dilution) with soybeans under Thai field conditions

Kucey, R. M. N.; Chaiwanakupt, P.; Arayangkool, T.; Snitwongse, P.; Siripaibool, C.; Wadisirisuk, P.; Boonkerd, N.

doi:10.1007/bf02370103

Cited by 29 publications

(10 citation statements)

References 13 publications

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“…The organ growing most rapidly at the time of the stress is generally the most affected. Thus Kucey et al (1988) found that temporary wilting of four soybean cultivars had a catastrophic effect on P atm accompanied by significant reductions in nodule number and mass. In relative terms, legume DM or seed yield were less affected by water deprivation than P atm , suggesting that soil N may have partly compensated for the reduction in symbiotic dependence (Kucey et al 1988;Kirda et al 1989).…”

Section: Watermentioning

confidence: 98%

“…When stress was applied at each of the above-mentioned stages, there was a drastic reduction in all measured parameters (Table 4). Several studies have addressed the effect of drought stress on the symbiotic performance of soybean (Kucey et al 1988;Kirda et al 1989;Purcell et al 2004). Kirda et al (1989) found that P atm of soybean grown in pots decreased progressively with increasing duration of water stress.…”

Section: Watermentioning

confidence: 99%

“…The establishment and functional components of nodulation are integrated in P atm . Quantitative data exist on biotic constraints to the legume-Rhizobium symbiosis, including invertebrate pests (Steele et al 1985), competition with weeds (Kucey et al 1988), legume genotypes, Rhizobium strains and their interactions (Hardarson and Atkins 2003) and the role of arbuscular mycorrhiza (Chalk et al 2006). Apart from a brief review of quantitative data on several nutritional stresses (Chalk 2000), the responses of the legume-Rhizobium symbiosis to other abiotic stresses, including temperature, water, salinity, sodicity and acidity, have not been the subject of detailed quantitative analysis.…”

Section: Introductionmentioning

confidence: 99%

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Integrated effects of abiotic stresses on inoculant performance, legume growth and symbiotic dependence estimated by 15N dilution

et al. 2009

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Temperature, water, salinity, sodicity, acidity and nutrient disorders are major abiotic stresses that can affect legume growth or the establishment and function of the legume-Rhizobium symbiosis. We have examined the literature where the application of the 15 N isotope dilution methodology permits the effect of individual abiotic stresses to be independently and quantitatively separated into plant growth-mediated and BNF (biological N 2 fixation)-mediated components. The response of the symbiosis to a particular stress depends on a host of factors, including legume genotype, cultivar, Rhizobium inoculant, climatic conditions, and the duration, timing and severity of the stress. Published data are analysed in terms of the above variables and their interactions. As a general rule, severe stress inhibits both legume dry matter (DM) and the proportional dependence of the legume on BNF as a source of N. The symbiosis is resilient to low to moderate stress, but there may still be a penalty on legume DM. Gaps in knowledge are identified, and general guidelines on the identification and amelioration of abiotic stresses are provided.

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Section: Watermentioning

confidence: 98%

Section: Watermentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Integrated effects of abiotic stresses on inoculant performance, legume growth and symbiotic dependence estimated by 15N dilution

et al. 2009

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“…Five herbicides tested under Canadian field conditions showed no effect on soybean nodulation and nitrogen fixation (258). The herbicides sethoxydim, alachlor, fluazifop butyl, and metalachlor did not have detrimental effects on N 2 fixation or seed yields when added at the recommended rates for weed control in soybean plantations (183). However, paraquat significantly reduced the amount of N 2 fixed by soybean as measured by the 15 N dilution method.…”

mentioning

confidence: 91%

Rhizobium -Legume Symbiosis and Nitrogen Fixation under Severe Conditions and in an Arid Climate

Zahran

1999

Microbiol Mol Biol Rev

1,348

635

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SUMMARY Biological N2 fixation represents the major source of N input in agricultural soils including those in arid regions. The major N2-fixing systems are the symbiotic systems, which can play a significant role in improving the fertility and productivity of low-N soils. The Rhizobium-legume symbioses have received most attention and have been examined extensively. The behavior of some N2-fixing systems under severe environmental conditions such as salt stress, drought stress, acidity, alkalinity, nutrient deficiency, fertilizers, heavy metals, and pesticides is reviewed. These major stress factors suppress the growth and symbiotic characteristics of most rhizobia; however, several strains, distributed among various species of rhizobia, are tolerant to stress effects. Some strains of rhizobia form effective (N2-fixing) symbioses with their host legumes under salt, heat, and acid stresses, and can sometimes do so under the effect of heavy metals. Reclamation and improvement of the fertility of arid lands by application of organic (manure and sewage sludge) and inorganic (synthetic) fertilizers are expensive and can be a source of pollution. The Rhizobium-legume (herb or tree) symbiosis is suggested to be the ideal solution to the improvement of soil fertility and the rehabilitation of arid lands and is an important direction for future research.

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“…Reports on the effect of herbicides on effective symbiosis of rhizobia with the legume host plants are, however, contradictory. For example, sethoxydim, alachlor, fluazifop butyl and metolachlor at recommended rates did not result in detrimental effects on seed yields or N 2 fixation in soybean while paraquat significantly reduced the amount of N 2 fixed as measured by 15 N dilution methods (Kucey et al 1988). Similarly, the adverse effects of terbutryn/terbuthylazine and bentazone on the performance of pea (Singh and Wright 2002b) and the phytotoxic effects of chlorimuron-ethyl on Bradyrhizobium japonicum inoculated soybean (Zawoznik and Tomaro 2005) is reported.…”

Section: Resultsmentioning

confidence: 96%

Toxicity Assessment of Herbicides Quizalafop-p-Ethyl and Clodinafop Towards Rhizobium Pea Symbiosis

Ahemad

Khan

2009

Bull Environ Contam Toxicol

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In modern conventional agriculture, herbicides are frequently used to prevent yield losses due to weeds. Herbicides also affect negatively the productivity of legumes. With these considerations, we evaluated the effects of soil applications of different concentrations of quizalafop-p-ethyl and clodinafop on the performance of Rhizobium inoculated pea, grown in clay pots. In this study, the concentration of herbicides higher than the recommended rates of quizalafop-p-ethyl and clodinafop adversely affected the dry matter accumulation, symbiotic properties, grain yield and nutrient status of pea plants. Toxicity of quizalafop-p-ethyl and clodinafop to pea plants increased progressively with increase in rates of herbicides. Of the two herbicides, quizalafop-p-ethyl was more toxic than clodinafop. In contrast, when herbicide tolerant Rhizobium strain MRP1 was also used with herbicide, it increased the measured parameters at all concentrations. A maximum increase of 11%, 17%, 46%, 33%, 21% and 7% in the root N, shoot N, root P, shoot P, seed yield and seed protein, respectively, was observed when MRP1 was used with 120 microg quizalafop-p-ethyl kg(-1) soil while with 1,200 microg clodinafop kg(-1) soil it increased the root N, shoot N, root P, shoot P, seed yield and seed protein by 20%, 9%, 56%, 56%, 29% and 7%, respectively, compared with the un-inoculated but herbicide treated control. This study suggested that the toxic effects of herbicides on pea plants could be attenuated by applying growth promoting herbicide tolerant strain of Rhizobium under herbicide stressed soil environment.

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Nitrogen fixation (15N dilution) with soybeans under Thai field conditions

Cited by 29 publications

References 13 publications

Integrated effects of abiotic stresses on inoculant performance, legume growth and symbiotic dependence estimated by 15N dilution

Integrated effects of abiotic stresses on inoculant performance, legume growth and symbiotic dependence estimated by 15N dilution

Rhizobium -Legume Symbiosis and Nitrogen Fixation under Severe Conditions and in an Arid Climate

Toxicity Assessment of Herbicides Quizalafop-p-Ethyl and Clodinafop Towards Rhizobium Pea Symbiosis

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