assimilation of nitrogen fixed by soil diazotrophs by rice plants

... re -assimilation of translocated nitrogenous compounds A predisposition to root nitrate reduction may simply be a consequence of an obligatory root nitrogen assimilation imposed by adaptation to dinitrogen ... of nitrate 86) ’ assimilation between root and shoot of higher plants Plant Cell Environ 9, 511-519 Chandler G (1981) Physiological aspects of rainforest regeneration I Effects of light and nitrogen ... the reactions of carbon and nitrogen metabolisms use assimilatory The results presented here indicate that inorganic nitrogen assimilation in woody plants resembles, in general, that of herbaceous...

Ngày tải lên: 09/08/2014, 04:20

... of nitrogen (3mM of total nitrogen) was higher than at high level of nitrogen (11 mM of total nitrogen) Control (no N added) had a lower number of cells than the production media containing nitrogen ... support hydrogen production by photosynthetic bacteria Effect of nitrogen levels and initial acetate concentrations Continuous illumination Upon investigation of the effect of nitrogen levels and initial ... the presence of high nitrogen concentration strongly inhibited hydrogen production by photosynthetic bacteria These microorganisms produce hydrogen by the catalytic activity of nitrogenase, which...

Ngày tải lên: 05/09/2013, 09:08

... from the water level of Lake Biwa (84.4 m T.P.) The type of the surface soil of EPW is alluvial gray soil Chemical properties of the paddy soil were summarized in Table The rice plant, Koshihikari, ... rate of TN was significantly affected by plowing of paddy soils L(R) method L(R) method was developed in order to evaluate storm-runoff loads by using precipitations in cases of limited data of ... observation of storm-runoff events is not so easy to carry out sufficient times of the observation Then, the samples of storm-runoff loads were supplemented with the storm-runoff loads calculated by using...

Ngày tải lên: 05/09/2013, 09:38

... that this area has enough capability of NO3-N removal In addition, low-permeable property of muddy soil might contribute to prolongation of retention time of groundwater, which results in promoting ... is removed by biological denitrification under anaerobic condition (reductive atmosphere) during the water permeate through the soil This hypothesis will be supported by the situation of NO3-N ... 27 17 23 18 Group 16 13 Group 24 Fig - Location of sampling points and grouping characterized by the water quality of groundwater - 22 - Journal of Water and Environment Technology, Vol 7, No...

Ngày tải lên: 05/09/2013, 09:38

... Arosio P (1988) Mechanism of ferritin iron uptake: activity of the H-chain and deletion mapping of the ferro-oxidase site A study of iron uptake and ferro-oxidase activity of human liver, recombinant ... that treatment of RAW 264.7 cells with the NO+ donor, SNP, causes the degradation of IRP2 associated with an increase of ferritin synthesis [20,37] Here, we examined the kinetics of ferritin synthesis ... RNA-binding activity of IRP1 remained largely unaffected (Fig 1B) Surprisingly, the rapid induction of ferritin synthesis by SNP in RAW 264.7 cells occurred much earlier than any decrease of IRP activities...

Ngày tải lên: 07/03/2014, 12:20

... effects of Cu concentration in soil on the growth rate of Brassica juncea L The height of plants reaches the highest value of 19.5 cm at Trt.1, and drops dramatically to 12.5 cm at Trt.4 (drop by ... biomass of Brassica juncea L.) with increasing concentration of Cu in soil The accumulation of heavy metal in plant tissues of Brassica juncea L is reflected the concentration in soil The contents of ... rates of Cu application, especially at the high rate of Cu above 100 ppm It can be said that the increase of rate of Cu uptake and accumulation in plants is much faster than the decrease of rate of...

Ngày tải lên: 14/03/2014, 15:20

... hypothesize that concentrations of trace elements will increase and stratify in those soils However, as a consequence of the recent introduction of zero tillage and the lack of fertilization history, ... 15᎐20 cm All soil samples were air dried and grounded The following soil properties were analyzed: organic matter ŽOM by dry combustion; pH in a 1:1 soilrwater ratio; exchangeable cations by ex- R.S ... nutrient uptake and yield of corn Agron J 1985;77:763᎐768 He QB, Singh BR Effect of organic matter on the distribution, extractability and uptake of cadmium in soils J Soil Sci 1993a;44:641᎐650...

Ngày tải lên: 15/03/2014, 23:22

... after by the addition of catalase Analysis of the reaction mixtures by RP-HPLC using UV-detection revealed a signicant decrease of the amount of starting N-hydroxyguanidine and the formation of ... the oxidation of to the corresponding cyanamide with formation of only minor amounts of urea Reaction of and NOHA in the presence of MP8 and H2O2 leads to NO formation as evidenced by EPR spectroscopy ... degradation of MP8 had occured under those oxidative conditions (data not shown) The effect of changing the pH of the reaction medium on the efciency and selectivity of the reaction of in the presence of...

Ngày tải lên: 17/03/2014, 09:20

... eigenvalue of B Proof As in the proof of Theorem 2, a and b are equivalent For < μ < 1, denote μI − μ B by B μ Suppose now that a holds Let λ be an eigenvalue of B Then μ 1− μ λ is an eigenvalue of ... The index of the eigenvalue of Q−1 A is the R Q−1 A −1 index of eigenvalue of B I − Q A Thus by Lemma 5, Cn Q−1 R A ⊕ N A For every vector v ∈ Cn , let v r and v n denote the component of v in ... eigenvalue of B μ By Theorem |μ − μ λ| ≤ for every < μ < and hence |λ| ≤ If is an eigenvalue of B, then it is also an eigenvalue of B μ By Theorem 2, the index of 1, as an eigenvalue of B μ , is Since...

Ngày tải lên: 21/06/2014, 20:20

... uptake of food occurred in females Effects of the various level of nitrogen in food did not differentiate the height of uptake within a sex 22 T3 Fig 10 Mean consumption of food by males of Phyllobius ... of nitrogen into plants J FOR SCI., 54, 2008 (1): 17–23 plant The extent of damage was calculated using the Photoshop program with the resolution of 64 × 240 pixels The chemistry of a mixed soil ... condition of the rapid increase in the nitrogen content in birch leaves was demonstrated by the analysis of its level in the dry matter of leaves during the spring season The amount of nitrogen...

Ngày tải lên: 07/08/2014, 10:21

... calculated using the Yasso dynamic soil carbon model [36] This model simulates cycling of carbon in upland forest soils to a depth of m in mineral soil Yasso consists of five decomposition compartments ... Finland’s forests was affected by changes in land use Conversion of other types of land to forest introduced carbon to the soil and litter of the forests, whereas conversion of forest to some other ... despite the greater harvests as a result of increased tree growth 3.2 Carbon balance of litter and soil The carbon stock of litter and soil increased by 13%, from 848 to 959 Tg, during the 82-year...

Ngày tải lên: 07/08/2014, 16:20

... modulus of composite improved soil Egap Young’s modulus of untreated soil gap Eimp Young’s modulus of improved soil Lgap Gap width of untreated soil Limp Length of improved soil ix LIST OF TABLES ... 6.3.4 Effect of Stiffness of Improved Soil Strut 168 6.4 Influence of Gap of Untreated Soil in between the Retaining Wall and Improved Soil Layer 171 6.4.1 Behaviour of Gap of Untreated Soil 172 ... of Composite Ground Resistance on Passive Side 128 5.2.7 Performance of Improved Soil Layer in A Braced Excavation 132 5.3 Effect of Stiffness of Improved Soil Strut 133 5.4 Effect of Width of...

Ngày tải lên: 17/09/2015, 17:20

... Determination of β-carotene content 2.5 Data analysis RESULTS AND DISCUSSIONS 3.1 Effect of nitrogen source on the growth of microalgae Dunaliella sp 3.1.1 NaNO3 3.1.2 KNO3 3.1.3 Urea 11 3.2 Effect of nitrogen ... "Effect of nitrogen on biomass and β-carotene accumulation by Dunaliella sp." project was conducted to find cheaper sources of nitrogen suited for the Dunaliella sp production The objective of this ... rate of algae increased when nitrogen concentration increased, and the highest rate of growth was obtained in K3 (µ=0.247) However, in higher nitrogen concentration of K4 (8 mM), the growth of...

Ngày tải lên: 06/10/2015, 13:04

Ngày tải lên: 18/08/2013, 04:10

... production of BOD5 by hydrolase and the consumption of BOD5 by active biomass Therefore, the rapid increase of BOD5 during the initial period was likely due to hydrolyzation of fragment of cell by enzyme ... treatment of high concentration of sludge; 2) investigation of optimal operating condition; 3) extent of improvement of lower molecular through hydrolysis; 4) estimation of the existence of biomass; ... definition of “solubilization” If biodegradability of samples is used as explanation of solubilization, the definition of this basic standard should be necessary From the view of the change of the...

Ngày tải lên: 05/09/2013, 08:40

... system, and the removal of nitrogen should be considered, too References [1] Department of Water Environment, Ministry of the Environment, Japan July 2002 Outline of Administration of Water Environment ... outlet of equipment Transparency[cm] 60 out of experimental area 50 40 30 20 10 10 15 20 25 30 35 40 45 50 Time[d] Figure Variation of Transparency Variation of COD concentration Variation of COD ... influence of these disturbances was found Some sampling points were selected They are the outlet of plant, the outside of experimental area, points of horizontal level and 0.5, 1.0, 1.5 m of vertical...

Ngày tải lên: 05/09/2013, 08:40

... minutes Fig Effect of backflush pressure on the flux, MLSS of 8700 mg/l, TMP of 0.4 bar, CFV of 0.88 m/s, backflushing pressure of 1.5 bar and backflushing interval of s Fig Effect of backflush interval ... MINUTES Fig Effect of TMP on the membrane flux, MLSS of 9300 mg/L, CVF (v) of 0.79 m/s, without backflush Fig Effect of CFV (v) on the membrane flux, MLSS of 9300 mg/L, TMP of 0.4 bar, without ... amount of nitrogen and phosphorous were added to the wastewater to achieve COD : N : P ratio of 100 : : The pH of wastewater was also neutralized Experimental Setup A schematic diagram of the...

Ngày tải lên: 05/09/2013, 09:08

... plots soil showed the same tendency The nitrogen removal capability is almost gone after ten weeks Since only the rice test plot soil had rice stubble of the previous year put into the soil during ... matter is supplied by the generation of algae and nitrogen removal is thus sustainable In order to explore the mechanism of nitrogen removal, experiments were conducted by sampling soil in thin layers ... 100g of soil sample from each layer is put into a 500 cm3 beaker each 300cm3 of 20mg･L-1 of nitrate nitrogen solution is put into the beaker and left to stable for one week in a dark room of 25...

Ngày tải lên: 05/09/2013, 09:08

... efficiency by digested sludge The potential of digested sludge on MO and RB4 tested by variation of dye concentration was shown by the different extent of decolorizing efficiency of the tested ... and presence of dye was associated with inhibition of organic matters conversion pathways caused by of the accumulation of volatile fatty acids in the treatment system In the case of temperature ... productivity were inhibited by the presence of MO which resulted in slow reduction of TOC, while the presence of RB4 inhibited methane productivity TOC reduction of treatment of RB4 was similar to...

Ngày tải lên: 05/09/2013, 09:38

... 10 L/day with 1,000 mg/L of biological oxygen demand (BOD), 50 mg/L of nitrogen and 25 mg/L of phosphorus The experiments were conducted at a sludge retention time (SRT) of 33 days and the hydraulic ... substances (EPS) of the mixed liquor were extracted by steam treatment at 105 oC for 30 minutes (Nakajima and Mishima, 2005) For the SMP

Ngày tải lên: 05/09/2013, 10:15