Accedi

Bibliografie tematiche / Nitrogen Fixation / Articoli di riviste

Articoli di riviste sul tema "Nitrogen Fixation"

Segui questo link per vedere altri tipi di pubblicazioni sul tema: Nitrogen Fixation.

Autore: Grafiati

Pubblicato: 4 giugno 2021

Ultima modifica: 6 luglio 2024

Cita una fonte nei formati APA, MLA, Chicago, Harvard e in molti altri stili

Scegli il tipo di fonte:

Vedi i top-50 articoli di riviste per l'attività di ricerca sul tema "Nitrogen Fixation".

Accanto a ogni fonte nell'elenco di riferimenti c'è un pulsante "Aggiungi alla bibliografia". Premilo e genereremo automaticamente la citazione bibliografica dell'opera scelta nello stile citazionale di cui hai bisogno: APA, MLA, Harvard, Chicago, Vancouver ecc.

Puoi anche scaricare il testo completo della pubblicazione scientifica nel formato .pdf e leggere online l'abstract (il sommario) dell'opera se è presente nei metadati.

Vedi gli articoli di riviste di molte aree scientifiche e compila una bibliografia corretta.

1

Nagiev, T. M., N. I. Ali-zadeh, L. M. Gasanova, I. T. Nagieva, Ch A. Mustafaeva, N. N. Malikova, A. A. Abdullaeva e E. S. Bakhramov. "NITROGEN FIXATION AT CONJUGATED OXIDATION". Azerbaijan Chemical Journal, n. 2 (2018): 6–10. http://dx.doi.org/10.32737/0005-2531-2018-2-6-10.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

2

O'GARA, FERGAL. "Nitrogen Fixation". Biochemical Society Transactions 13, n. 3 (1 giugno 1985): 639. http://dx.doi.org/10.1042/bst0130639a.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

3

Wen-Yue Hsiung. "Nitrogen Fixation". Forest Ecology and Management 10, n. 4 (maggio 1985): 348–50. http://dx.doi.org/10.1016/0378-1127(85)90127-6.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

4

Becker, James Y., e Shlomit Avraham (Tsarfaty). "Nitrogen fixation". Journal of Electroanalytical Chemistry and Interfacial Electrochemistry 280, n. 1 (febbraio 1990): 119–27. http://dx.doi.org/10.1016/0022-0728(90)87088-2.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

5

Becker, James Y., Shlomit Avraham (Tsarfaty) e Barry Posin. "Nitrogen fixation". Journal of Electroanalytical Chemistry and Interfacial Electrochemistry 230, n. 1-2 (agosto 1987): 143–53. http://dx.doi.org/10.1016/0022-0728(87)80138-9.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

6

Becker, James Y., e Barry Posin. "Nitrogen fixation". Journal of Electroanalytical Chemistry and Interfacial Electrochemistry 250, n. 2 (agosto 1988): 385–97. http://dx.doi.org/10.1016/0022-0728(88)85178-7.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

7

Davis, Lawrence C. "Fundamentals of nitrogen fixation an introduction to nitrogen fixation". Trends in Biochemical Sciences 12 (gennaio 1987): 451–52. http://dx.doi.org/10.1016/0968-0004(87)90216-7.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

8

Smith, B. E. "Fertilizer fixation nitrogen fixation in plants". Trends in Biochemical Sciences 12 (gennaio 1987): 36. http://dx.doi.org/10.1016/0968-0004(87)90018-1.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

9

Sprent, J. I., e M. Alexander. "Biological Nitrogen Fixation." Journal of Applied Ecology 22, n. 2 (agosto 1985): 601. http://dx.doi.org/10.2307/2403193.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

10

Mylona, Panagiota, Katharina Pawlowski e Ton Bisseling. "Symbiotic Nitrogen Fixation". Plant Cell 7, n. 7 (luglio 1995): 869. http://dx.doi.org/10.2307/3870043.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

11

Burris, R. H., e G. P. Roberts. "Biological Nitrogen Fixation". Annual Review of Nutrition 13, n. 1 (luglio 1993): 317–35. http://dx.doi.org/10.1146/annurev.nu.13.070193.001533.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

12

Lehnert, Nicolai, Hai T. Dong, Jill B. Harland, Andrew P. Hunt e Corey J. White. "Reversing nitrogen fixation". Nature Reviews Chemistry 2, n. 10 (27 settembre 2018): 278–89. http://dx.doi.org/10.1038/s41570-018-0041-7.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

13

Wiseman, Alan, Gordon C. Hartman e Barry E. Smith. "Biological nitrogen fixation". Journal of Biological Education 19, n. 1 (marzo 1985): 24–30. http://dx.doi.org/10.1080/00219266.1985.9654683.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

14

MULLIN, BETH C. "Symbiotic Nitrogen Fixation". Soil Science 160, n. 5 (novembre 1995): 385–86. http://dx.doi.org/10.1097/00010694-199511000-00009.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

15

Sprent, J. "Prokaryotic nitrogen fixation". Applied Soil Ecology 16, n. 2 (febbraio 2001): 193–94. http://dx.doi.org/10.1016/s0929-1393(00)00125-6.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

16

Gallon, John R. "Nitrogen without fixation". Trends in Microbiology 5, n. 10 (ottobre 1997): 419. http://dx.doi.org/10.1016/s0966-842x(97)89761-2.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

17

McFarland, Mel A., e Dale W. Toetz. "Nitrogen fixation (acetylene reduction) in Lake Hefner, Oklahoma". Archiv für Hydrobiologie 114, n. 2 (14 dicembre 1988): 213–30. http://dx.doi.org/10.1127/archiv-hydrobiol/114/1988/213.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

18

Smith, Barry E. "Nitrogen and diversity biological nitrogen fixation". Trends in Biochemical Sciences 18, n. 3 (marzo 1993): 109–10. http://dx.doi.org/10.1016/0968-0004(93)90165-j.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

19

Takahashi, Mikio, e Yatsuka Saijo. "Nitrogen metabolism in Lake Kizaki, Japan V. The role of nitrogen fixation in nitrogen requirement of phytoplankton". Archiv für Hydrobiologie 112, n. 1 (24 marzo 1988): 43–54. http://dx.doi.org/10.1127/archiv-hydrobiol/112/1988/43.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

20

Wang, Qianru, Yeqin Guan, Jianping Guo e Ping Chen. "Hydrides mediate nitrogen fixation". Cell Reports Physical Science 3, n. 3 (marzo 2022): 100779. http://dx.doi.org/10.1016/j.xcrp.2022.100779.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

21

Jayasankari, N., e S. Shanmugasundaram. "Nitrogen fixation byNostoc strains". Proceedings / Indian Academy of Sciences 94, n. 1 (marzo 1985): 59–64. http://dx.doi.org/10.1007/bf03053107.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

22

Saha, U., e M. Sen. "Nitrogen fixation byCandida tropicalis". Proceedings / Indian Academy of Sciences 100, n. 5 (ottobre 1990): 343–52. http://dx.doi.org/10.1007/bf03053458.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

23

Jenkins, Michael B. "Nitrogen Fixation, 3rd Edition". Journal of Environmental Quality 29, n. 6 (novembre 2000): 2047–48. http://dx.doi.org/10.2134/jeq2000.00472425002900060047x.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

24

Miller, Lynn. "Peloponnesia and Nitrogen Fixation". Nature Biotechnology 6, n. 7 (luglio 1988): 841. http://dx.doi.org/10.1038/nbt0788-841a.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

25

Rabinovich, Daniel. "Nitrogen Fixation before Haber". Chemistry International 40, n. 3 (1 luglio 2018): 3. http://dx.doi.org/10.1515/ci-2018-0302.

Testo completo

Abstract (sommario):

Abstract Much has been written about the German chemist Fritz Haber (1868-1934), who embodies at once the best and the worst that chemistry has offered to humankind. He received the Nobel Prize in Chemistry a century ago (1918) “for the synthesis of ammonia from its elements,” an industrial process that led to the pervasive use of nitrogen-based fertilizers in agriculture and enabled the unprecedented population growth experienced in the world ever since. On the other hand, Haber is often considered the “father of chemical warfare” for his role in the development and deployment of chlorine and other poisonous gases during World War I. This note, however, is not about Haber’s legacy but pays tribute instead to two resourceful Norwegians who preceded him in the quest for converting atmospheric nitrogen into more reactive, bioavailable forms of the element.

Gli stili APA, Harvard, Vancouver, ISO e altri

26

VanHook, Annalisa M. "Signaling for nitrogen fixation". Science 360, n. 6385 (12 aprile 2018): 166.19–168. http://dx.doi.org/10.1126/science.360.6385.166-s.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

27

Magingo, Francis S. S., e Claudius K. Stumm. "Nitrogen fixation byMethanobacterium formicicum". FEMS Microbiology Letters 81, n. 3 (luglio 1991): 273–77. http://dx.doi.org/10.1111/j.1574-6968.1991.tb04771.x.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

28

Vance, Carroll P. "Nitrogen Fixation. John Postgate". Quarterly Review of Biology 75, n. 3 (settembre 2000): 305. http://dx.doi.org/10.1086/393510.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

29

Elkan, G. H., e GEORGE H. WAGNER. "Symbiotic Nitrogen Fixation Technology". Soil Science 145, n. 6 (giugno 1988): 464. http://dx.doi.org/10.1097/00010694-198806000-00014.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

30

Comyns, Alan E. "Progress in Nitrogen Fixation". Focus on Catalysts 2010, n. 2 (febbraio 2010): 1–2. http://dx.doi.org/10.1016/s1351-4180(10)70001-5.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

31

GALLON, J. R. "Nitrogen Fixation in Plants". Biochemical Society Transactions 16, n. 6 (1 dicembre 1988): 1098. http://dx.doi.org/10.1042/bst0161098a.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

32

Gruber, Nicolas. "Elusive marine nitrogen fixation". Proceedings of the National Academy of Sciences 113, n. 16 (8 aprile 2016): 4246–48. http://dx.doi.org/10.1073/pnas.1603646113.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

33

Towe;, K. M. "Evolution of Nitrogen Fixation". Science 295, n. 5556 (1 febbraio 2002): 798–99. http://dx.doi.org/10.1126/science.295.5556.798.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

34

Bazhenova, T. A., e A. E. Shilov. "Nitrogen fixation in solution". Coordination Chemistry Reviews 144 (ottobre 1995): 69–145. http://dx.doi.org/10.1016/0010-8545(95)01139-g.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

35

Long, Sharon R. "Nitrogen fixation in plants". Cell 48, n. 6 (marzo 1987): 912. http://dx.doi.org/10.1016/0092-8674(87)90699-4.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

36

Ausubel, F. M., B. Hoffman, P. McLean, E. Münck, D. Wink, W. Orme-Johnson, A. Anderson et al. "Nitrogenase and nitrogen fixation". Journal of Inorganic Biochemistry 36, n. 3-4 (agosto 1989): 167. http://dx.doi.org/10.1016/0162-0134(89)84068-1.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

37

Maier, G�nther, Hans Peter Reisenauer, Jochem Henkelmann e Christine Kliche. "Nitrogen Fixation by Borabenzene". Angewandte Chemie International Edition in English 27, n. 2 (febbraio 1988): 295–96. http://dx.doi.org/10.1002/anie.198802951.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

38

Swain, T. "Nitrogen fixation in plants". Biochemical Systematics and Ecology 16, n. 1 (gennaio 1988): 115–16. http://dx.doi.org/10.1016/0305-1978(88)90125-1.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

39

Hubbell, D. H. "Nitrogen Fixation Research Programs". Forest Science 32, n. 4 (1 dicembre 1986): 1099. http://dx.doi.org/10.1093/forestscience/32.4.1099.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

40

Arango, Clay Porter, Leslie Anne Riley, Jennifer Leah Tank e Robert Ogden Hall,. "Herbivory by an invasive snail increases nitrogen fixation in a nitrogen-limited stream". Canadian Journal of Fisheries and Aquatic Sciences 66, n. 8 (agosto 2009): 1309–17. http://dx.doi.org/10.1139/f09-079.

Testo completo

Abstract (sommario):

Despite anthropogenic nitrogen contributions, nitrogen fixation contributes half of biosphere inputs but has rarely been quantified in streams. Herbivory controls algal biomass and productivity in streams, and we hypothesized that herbivory could also control nitrogen fixation. We released periphyton from herbivory in nitrogen-limited Polecat Creek, Wyoming, where heavy grazing by the invasive New Zealand mudsnail ( Potamopyrgus antipodarum ) dominates nitrogen cycling. One and two weeks after releasing periphyton, we found higher rates of nitrogen fixation on heavily grazed rocks (two-way analysis of variance (ANOVA), p = 0.012). Time elapsed after snail manipulation had no effect (two-way ANOVA, p = 0.24). Grazing changed periphyton composition by reducing the proportion of green algae and increasing the proportion of nitrogen-fixing diatoms (multivariate ANOVA, p = 0.001). Nitrogen fixation rates increased disproportionately to nitrogen-fixing algal cells, indicating that snails increased nitrogenase efficiency, probably by improving light and (or) nutrient availability to nitrogen fixers. We incorporated our nitrogen fixation rates into a published nitrogen budget for Polecat Creek and found that nitrogen flux into the periphyton was 50% higher when we included nitrogen fixation. Herbivory can increase nitrogen fixation in streams, and future studies should measure nitrogen fixation for a more thorough understanding of stream nitrogen cycling.

Gli stili APA, Harvard, Vancouver, ISO e altri

41

Merbach, W., e H. J. Jacob. "Nitrogen Fixation and Nitrogen Fertilization of Soybeans". Isotopes in Environmental and Health Studies 32, n. 2-3 (agosto 1996): 173–80. http://dx.doi.org/10.1080/10256019608036309.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

42

Kimble, Linda K., e Michael T. Madigan. "Nitrogen fixation and nitrogen metabolism in heliobacteria". Archives of Microbiology 158, n. 3 (agosto 1992): 155–61. http://dx.doi.org/10.1007/bf00290810.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

43

Šimon, T. "Utilization of the biological nitrogen fixation for soil evaluation". Plant, Soil and Environment 49, No. 8 (10 dicembre 2011): 359–63. http://dx.doi.org/10.17221/4137-pse.

Testo completo

Abstract (sommario):

Non-symbiotic nitrogen fixation (potential nitrogenase activity – PNA) of soil samples originating from different plots of long-term field experiments (selected variants: Nil, NPK [mineral fertilisation: 64.6–100 kg N/ha/year], FYM [farmyard manure], and FYM + NPK from three blocks III, IV and B with different crop rotation) was determined in laboratory experiments. The symbiotic nitrogen fixation (total nitrogenase activity – TNA) of the same soil samples was evaluated in hydroponic experiments with pea (2001, 2002) and lucerne (2001) in which the soil samples were used as a natural inoculum. The high values of PNA were found in the variants fertilised with FYM in all three blocks and all experiments. Simultaneously, the variants fertilised with mineral NPK reached low values of PNA. The farmyard manuring enhanced the number of free-living bacteria Azotobacter spp. that were identified in all soil samples. In the hydroponic experiments with pea, the highest nonsignificant values of TNA were found in variants B 284 (FYM + NPK) and III 254 (FYM + NPK) in 2001, and B 214 (FYM) and III 214 (FYM) in 2002. Plants inoculated with soil from these variants formed also high amounts of nodules (significant differences in block IV in 2001) and plant biomass. In the experiments with lucerne, the nonsignificantly highest TNA values were found in variant III 154 (NPK). Variants from block III (214, 254) and IV (114 and 154) showed the nonsignificantly lowest TNA values. The rhizobia that effectuate symbiosis with pea were more active in the soil samples in 2001 than those forming nodules on lucerne.

Gli stili APA, Harvard, Vancouver, ISO e altri

44

Sumaira Mazhar, Sumaira Mazhar, e Jerry D. Cohen and Shahida Hasnain Jerry D Cohen and Shahida Hasnain. "Novel Approach for the Determination of Nitrogen Fixation in Cyanobacteria". Journal of the chemical society of pakistan 41, n. 1 (2019): 105. http://dx.doi.org/10.52568/000711/jcsp/41.01.2019.

Testo completo

Abstract (sommario):

Non-heterocystous nitrogen fixing strains of cyanobacteria were screened by their ability to grow in nitrogen deficient media. The selected nitrogen fixing cyanobacterial cells were then cultured in BG11 media supplemented with [15N]-labeled sodium nitrate. Under these growth conditions any organic [14N] found in the cyanobacterial cells would simply come from nitrogen fixation because [15N] was the only available source of nitrogen in the medium. Amino acids extracted after different time periods (after 15, 30, 40, 50 and 60 days of inoculation) were used for the determination of the 14N/15N ratio using GC-MS. Results from the present study support the conclusion that at stationary phase of growth cyanobacterial nitrogen fixation was no longer supplying a significant amount of nitrogen. This approach not only provided a detailed method for the evaluation of the nitrogen fixing potential of the cyanobacteria in culture, but also suggests novel approaches for the assessment of the ability of the strains to provide nitrogen enrichment to plants under co-cultivation conditions.

Gli stili APA, Harvard, Vancouver, ISO e altri

45

Yu, Tong, e Qianlai Zhuang. "Modeling biological nitrogen fixation in global natural terrestrial ecosystems". Biogeosciences 17, n. 13 (13 luglio 2020): 3643–57. http://dx.doi.org/10.5194/bg-17-3643-2020.

Testo completo

Abstract (sommario):

Abstract. Biological nitrogen fixation plays an important role in the global nitrogen cycle. However, the fixation rate has been usually measured or estimated at a particular observational site. To quantify the fixation amount at the global scale, process-based models are needed. This study develops a biological nitrogen fixation model to quantitatively estimate the nitrogen fixation rate by plants in a natural environment. The revised nitrogen module better simulates the nitrogen cycle in comparison with our previous model that has not considered the fixation effects. The new model estimates that tropical forests have the highest fixation rate among all ecosystem types, which decreases from the Equator to the polar region. The estimated nitrogen fixation in global terrestrial ecosystems is 61.5 Tg N yr−1 with a range of 19.8–107.9 Tg N yr−1 in the 1990s. Our estimates are relatively low compared to some early estimates using empirical approaches but comparable to more recent estimates that involve more detailed processes in their modeling. Furthermore, the contribution of nitrogen made by biological nitrogen fixation depends on ecosystem type and climatic conditions. This study highlights that there are relatively large effects of biological nitrogen fixation on ecosystem nitrogen cycling. and the large uncertainty of the estimation calls for more comprehensive understanding of biological nitrogen fixation. More direct observational data for different ecosystems are in need to improve future quantification of fixation and its impacts.

Gli stili APA, Harvard, Vancouver, ISO e altri

46

Madinger, Hilary L., e Robert O. Hall Jr. "Nitrogen fluxes in Western streams". UW National Parks Service Research Station Annual Reports 40 (15 dicembre 2017): 61–68. http://dx.doi.org/10.13001/uwnpsrc.2017.5575.

Testo completo

Abstract (sommario):

Nitrogen pollution to streams is altering the nitrogen cycling in unknown ways, causing challenges for predicting nitrogen fixation fluxes within aquatic ecosystems. Increasing nitrate pollution decreases the amount of nitrogen fixation occurring in streams. However, the relationship between stream nitrate concentration and the rate of nitrogen fixation is unknown. We predict that lower nitrate streams will have the highest rates of nitrogen fixation. Additionally, there will be much more energy produced in streams with nitrogen fixation compared to the amount required to fix the nitrogen. We estimated whole-stream gross primary production and nitrogen fixation fluxes using the diel change in dissolved nitrogen and oxygen gases compared to the expected dissolved gas saturation. Our whole-stream method is preferable to chamber estimates to understand the relationship between energy requirements for nitrogen fixation and gross primary production, but additional data is needed to distinguish between relationship types and make our measurements generalizable. Featured photo by Intermountain Forest Service, USDA Region 4 Photography on Flickr. https://flic.kr/p/jbTRUj

Gli stili APA, Harvard, Vancouver, ISO e altri

47

Nadkernychna, O. V., S. M. Minenok, R. L. Boguslavsky e O. Yu Leonov. "ASSESSMENT OF WINTER WHEAT VARIETIES BY THEIR ASSOCIATIVE NITROGEN FIXATION ABILITY". Agriciltural microbiology 17 (1 ottobre 2013): 67–78. http://dx.doi.org/10.35868/1997-3004.17.67-78.

Testo completo

Abstract (sommario):

The paper depicts the results of intervarietal variability study of winter wheat plants in controlled environment with varieties Albatross Odessa, Kiriya, Zolotokolosa, Lybid and Odeska 267 by their associative nitrogen fixation ability. The 5.6 – 13.7 – fold divergence between the varieties by given index was revealed. It was shown that intravarietal variability of winter wheat plants by their ability to stimulate associative nitrogen fixation occurs along with the intervarietal one. Populations intensity of a different genotypes characterized by high nitrogen fixation activity in root zone, stipulates high nitrogen fixation potential of variety. Among the studied varieties Zolotokolosa was selected as genetically homogeneous variety with high nitrogen fixation potential of rhizosphere microorganisms that can be recommended for use in breeding as a source with high capacity for associative nitrogen fixation. New winter wheat varieties with high nitrogen fixation potential can fully develop using not only mineral nitrogen fertilizers, but also interacting with associative nitrogen fixation microorganisms should partially replace mineral nitrogen with biological that, in turn, will guarantee a high yield quality and conservation of agricultural landscapes.

Gli stili APA, Harvard, Vancouver, ISO e altri

48

Fekete, Frank A. "Nitrogen Fixation Nitrogen Fixation in Plants R. O. D. Dixon C. T. Wheeler". BioScience 37, n. 6 (giugno 1987): 428–29. http://dx.doi.org/10.2307/1310571.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

49

Liu, Ying, Zhenhui Yan, Jianguo Wang, Jihao Zhao, Yiyang Liu, Jie Zou, Lin Li, Jialei Zhang e Shubo Wan. "Optimizing Initial Nitrogen Application Rates to Improve Peanut (Arachis hypogaea L.) Biological Nitrogen Fixation". Agronomy 13, n. 12 (8 dicembre 2023): 3020. http://dx.doi.org/10.3390/agronomy13123020.

Testo completo

Abstract (sommario):

The application of nitrogen fertilizer is crucial to the growth and biological nitrogen fixation of peanut, especially in the seedling stage where nodules have not yet formed. However, it is still uncertain how much initial nitrogen fertilizer should be applied to promote peanut root growth, nodule formation, and biological nitrogen fixation (BNF). There, a 2-year pot experiment was conducted using Huayu 22 (HY22, large-grain cultivar) and Huayu 39 (HY39, small-grain cultivar) as experimental materials to research the effects of different initial nitrogen fertilizer application rates on peanut root growth (root weight, root length, root mean diameter, root activity) and biological nitrogen fixation capacity (nodule number, nodule weight, biological nitrogen fixation, and nitrogen fixation potential per plant). N0, as control, four initial nitrogen fertilizer application rates were established: 15 kg·hm−2 (N15), 30 kg·hm−2 (N30), 45 kg·hm−2 (N45), and 60 kg·hm−2 (N60). The present results showed that the nodule number, nodule dry weight, nitrogenase activity, and biological nitrogen fixation of the HY22 cultivar under the N15 treatment were higher compared to those under other treatments over the two growing seasons. In addition, the cultivar of HY39 treated with the N15 treatment also increased the nitrogen fixation potential per plant and BNF relative to other treatments. Although the application of 60 kg·hm−2 nitrogen increased the root surface area and root volume, it decreased the nitrogenase activity, nodule dry weight, and nitrogen fixation potential per plant of HY22 and HY39 varieties in both growing seasons. Above all, an initial nitrogen application of 15 kg·hm−2 may be the optimal treatment for promoting peanut nodule formation and biological nitrogen fixation.

Gli stili APA, Harvard, Vancouver, ISO e altri

50

Zhang, Wenyao, Yihang Chen, Keyang Huang, Feng Wang e Ziqing Mei. "Molecular Mechanism and Agricultural Application of the NifA–NifL System for Nitrogen Fixation". International Journal of Molecular Sciences 24, n. 2 (4 gennaio 2023): 907. http://dx.doi.org/10.3390/ijms24020907.

Testo completo

Abstract (sommario):

Nitrogen–fixing bacteria execute biological nitrogen fixation through nitrogenase, converting inert dinitrogen (N2) in the atmosphere into bioavailable nitrogen. Elaborating the molecular mechanisms of orderly and efficient biological nitrogen fixation and applying them to agricultural production can alleviate the “nitrogen problem”. Azotobacter vinelandii is a well–established model bacterium for studying nitrogen fixation, utilizing nitrogenase encoded by the nif gene cluster to fix nitrogen. In Azotobacter vinelandii, the NifA–NifL system fine–tunes the nif gene cluster transcription by sensing the redox signals and energy status, then modulating nitrogen fixation. In this manuscript, we investigate the transcriptional regulation mechanism of the nif gene in autogenous nitrogen–fixing bacteria. We discuss how autogenous nitrogen fixation can better be integrated into agriculture, providing preliminary comprehensive data for the study of autogenous nitrogen–fixing regulation.

Gli stili APA, Harvard, Vancouver, ISO e altri

Offriamo sconti su tutti i piani premium per gli autori le cui opere sono incluse in raccolte letterarie tematiche. Contattaci per ottenere un codice promozionale unico!