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{{S|microbiologia}}
{{S|microbiologia}}


I '''diazotrofi''' sono [[microrganismi]] che fissano l'azoto gassoso atmosferico in una forma biologicamente più utile come l'[[ammoniaca]].<ref>{{cite journal|last1=Puri|first1=Akshit|last2=Padda|first2=Kiran Preet|last3= Puri |first3=Chris P | name-list-style = vanc |title=Can a diazotrophic endophyte originally isolated from lodgepole pine colonize an agricultural crop (corn) and promote its growth?|journal=Soil Biology and Biochemistry|date=October 2015|volume=89|pages=210–216|doi=10.1016/j.soilbio.2015.07.012}}</ref><ref>{{cite journal|last1=Puri|first1=Akshit|last2=Padda|first2=Kiran Preet |last3 = Chanway | name-list-style = vanc |first3=Chris P|s2cid=15963708|title=Evidence of nitrogen fixation and growth promotion in canola (''Brassica napus'' L.) by an endophytic diazotroph ''Paenibacillus polymyxa'' P2b-2R|journal=Biology and Fertility of Soils|date=January 2016|volume=52|issue=1|pages=119–125|doi=10.1007/s00374-015-1051-y}}</ref><ref>{{cite journal|last1=Puri|first1=Akshit|last2=Padda|first2=Kiran Preet|last3= Chanway |first3=Chris P |s2cid=17870808| name-list-style = vanc |title=Seedling growth promotion and nitrogen fixation by a bacterial endophyte ''Paenibacillus polymyxa'' P2b-2R and its GFP derivative in corn in a long-term trial|journal=Symbiosis|date=June 2016|volume=69|issue=2|pages=123–129|doi=10.1007/s13199-016-0385-z}}</ref><ref>{{cite journal|last1=Padda|first1=Kiran Preet|last2=Puri|first2=Akshit|last3=[http://profiles.forestry.ubc.ca/person/christopher-chanway/ Chanway]|first3=Chris P|s2cid=18149924|title=Effect of GFP tagging of ''Paenibacillus polymyxa'' P2b-2R on its ability to promote growth of canola and tomato seedlings|journal=Biology and Fertility of Soils|date=April 2016|volume=52|issue=3|pages=377–387|doi=10.1007/s00374-015-1083-3}}</ref><ref>{{cite journal|last1=Padda|first1=Kiran Preet|last2= Puri |first2=Akshit|last3= Chanway |first3=Chris P | name-list-style = vanc |title=Plant growth promotion and nitrogen fixation in canola by an endophytic strain of ''Paenibacillus polymyxa'' and its GFP-tagged derivative in a long-term study|journal=Botany|volume=94|issue=12|pages=1209–1217|date=7 July 2016|doi=10.1139/cjb-2016-0075}}</ref><ref>{{Cite journal|last1=Padda|first1=Kiran Preet|last2=Puri|first2=Akshit|last3=Zeng|first3=Qingwei|last4=Chanway|first4=Chris P.|last5=Wu|first5=Xiaoqin | name-list-style = vanc |date=2017-07-14|title=Effect of GFP-tagging on nitrogen fixation and plant growth promotion of an endophytic diazotrophic strain of Paenibacillus polymyxa|journal=Botany|volume=95|issue=9|pages=933–942|doi=10.1139/cjb-2017-0056|issn=1916-2790|hdl=1807/79634|hdl-access=free}}</ref><ref>{{Cite journal|last1=Puri|first1=Akshit|last2=Padda|first2=Kiran Preet|last3=Chanway|first3=Chris P. | name-list-style = vanc |date=2018-12-15|title=Evidence of endophytic diazotrophic bacteria in lodgepole pine and hybrid white spruce trees growing in soils with different nutrient statuses in the West Chilcotin region of British Columbia, Canada|journal=Forest Ecology and Management|volume=430|pages=558–565|doi=10.1016/j.foreco.2018.08.049|s2cid=92247486|issn=0378-1127}}</ref><ref>{{Cite journal|last1=Padda|first1=Kiran Preet|last2=Puri|first2=Akshit|last3=Chanway|first3=Chris P. | name-list-style = vanc |date=2018-09-20|title=Isolation and identification of endophytic diazotrophs from lodgepole pine trees growing at unreclaimed gravel mining pits in central interior British Columbia, Canada|journal=Canadian Journal of Forest Research|volume=48|issue=12|pages=1601–1606|doi=10.1139/cjfr-2018-0347|issn=0045-5067|hdl=1807/92505|s2cid=92275030|hdl-access=free}}</ref><ref>{{Cite journal|last1=Puri|first1=Akshit|last2=Padda|first2=Kiran Preet|last3=Chanway|first3=Chris P. | name-list-style = vanc |date=2020-01-01|title=Can naturally-occurring endophytic nitrogen-fixing bacteria of hybrid white spruce sustain boreal forest tree growth on extremely nutrient-poor soils?|journal=Soil Biology and Biochemistry|volume=140|pages=107642|doi=10.1016/j.soilbio.2019.107642|issn=0038-0717|doi-access=free}}</ref><ref>{{cite journal | vauthors = Padda KP, Puri A, Chanway C | title = Endophytic nitrogen fixation - a possible 'hidden' source of nitrogen for lodgepole pine trees growing at unreclaimed gravel mining sites | journal = FEMS Microbiology Ecology | volume = 95 | issue = 11 | date = November 2019 | pmid = 31647534 | doi = 10.1093/femsec/fiz172 | url = https://academic.oup.com/femsec/article/95/11/fiz172/5606785 }}</ref><ref>{{Cite journal|last1=Puri|first1=Akshit|last2=Padda|first2=Kiran Preet|last3=Chanway|first3=Chris P. | name-list-style = vanc |date=2020-05-01|title=In vitro and in vivo analyses of plant-growth-promoting potential of bacteria naturally associated with spruce trees growing on nutrient-poor soils|url=http://www.sciencedirect.com/science/article/pii/S0929139319314829|journal=Applied Soil Ecology|language=en|volume=149|pages=103538|doi=10.1016/j.apsoil.2020.103538|s2cid=213458305|issn=0929-1393}}</ref><ref>{{cite journal | vauthors = Puri A, Padda KP, Chanway CP | title = Sustaining the growth of Pinaceae trees under nutrient-limited edaphic conditions via plant-beneficial bacteria | journal = PLOS ONE | volume = 15 | issue = 8 | pages = e0238055 | date = 2020-08-26 | pmid = 32845898 | pmc = 7449467 | doi = 10.1371/journal.pone.0238055 | bibcode = 2020PLoSO..1538055P | doi-access = free }}</ref>
⚫
I '''diazotrofi''' sono [[microrganismi]] che fissano l'azoto gassoso atmosferico in una forma biologicamente più utile come l'[[ammoniaca]]. Esempi di organismi in grado di compiere questo processo sono ''[[Rhizobium|Rhizobia]]'', ''[[Frankia]]'' (in simbiosi), e ''[[Azospirillum]]''.<br>

⚫
Esempi di organismi in grado di compiere questo processo sono ''[[Rhizobium|Rhizobia]]'', ''[[Frankia]]'' (in simbiosi), e ''[[Azospirillum]]''.<br>
I diazotrofi possono crescere senza fonti esterne di azoto già fissato. Contengono solitamente sistemi con [[nitrogenasi]] a ferro-molibdeno.
I diazotrofi possono crescere senza fonti esterne di azoto già fissato. Contengono solitamente sistemi con [[nitrogenasi]] a ferro-molibdeno.


Due dei sistemi più studiati sono quelli di ''[[Klebsiella pneumoniae]]'' e ''[[Azotobacter vinlandii]]''.
Due dei sistemi più studiati sono quelli di ''[[Klebsiella pneumoniae]]'' e ''[[Azotobacter vinlandii]]''.

==Note==
<references/>

{{Portale|microbiologia}}
{{Portale|microbiologia}}


Versione delle 23:00, 11 gen 2022

Abbozzo microbiologia
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I diazotrofi sono microrganismi che fissano l'azoto gassoso atmosferico in una forma biologicamente più utile come l'ammoniaca.[1][2][3][4][5][6][7][8][9][10][11][12]


Esempi di organismi in grado di compiere questo processo sono Rhizobia, Frankia (in simbiosi), e Azospirillum.
I diazotrofi possono crescere senza fonti esterne di azoto già fissato. Contengono solitamente sistemi con nitrogenasi a ferro-molibdeno.

Due dei sistemi più studiati sono quelli di Klebsiella pneumoniae e Azotobacter vinlandii.

Note

  1. ^ Can a diazotrophic endophyte originally isolated from lodgepole pine colonize an agricultural crop (corn) and promote its growth?, in Soil Biology and Biochemistry, vol. 89, October 2015, pp. 210–216, DOI:10.1016/j.soilbio.2015.07.012.
  2. ^ Evidence of nitrogen fixation and growth promotion in canola (Brassica napus L.) by an endophytic diazotroph Paenibacillus polymyxa P2b-2R, in Biology and Fertility of Soils, vol. 52, n. 1, January 2016, pp. 119–125, DOI:10.1007/s00374-015-1051-y.
  3. ^ Seedling growth promotion and nitrogen fixation by a bacterial endophyte Paenibacillus polymyxa P2b-2R and its GFP derivative in corn in a long-term trial, in Symbiosis, vol. 69, n. 2, June 2016, pp. 123–129, DOI:10.1007/s13199-016-0385-z.
  4. ^ Effect of GFP tagging of Paenibacillus polymyxa P2b-2R on its ability to promote growth of canola and tomato seedlings, in Biology and Fertility of Soils, vol. 52, n. 3, April 2016, pp. 377–387, DOI:10.1007/s00374-015-1083-3.
  5. ^ Plant growth promotion and nitrogen fixation in canola by an endophytic strain of Paenibacillus polymyxa and its GFP-tagged derivative in a long-term study, in Botany, vol. 94, n. 12, 7 July 2016, pp. 1209–1217, DOI:10.1139/cjb-2016-0075.
  6. ^ Effect of GFP-tagging on nitrogen fixation and plant growth promotion of an endophytic diazotrophic strain of Paenibacillus polymyxa, in Botany, vol. 95, n. 9, 14 luglio 2017, pp. 933–942, DOI:10.1139/cjb-2017-0056.
  7. ^ Evidence of endophytic diazotrophic bacteria in lodgepole pine and hybrid white spruce trees growing in soils with different nutrient statuses in the West Chilcotin region of British Columbia, Canada, in Forest Ecology and Management, vol. 430, 15 dicembre 2018, pp. 558–565, DOI:10.1016/j.foreco.2018.08.049.
  8. ^ Isolation and identification of endophytic diazotrophs from lodgepole pine trees growing at unreclaimed gravel mining pits in central interior British Columbia, Canada, in Canadian Journal of Forest Research, vol. 48, n. 12, 20 settembre 2018, pp. 1601–1606, DOI:10.1139/cjfr-2018-0347.
  9. ^ Can naturally-occurring endophytic nitrogen-fixing bacteria of hybrid white spruce sustain boreal forest tree growth on extremely nutrient-poor soils?, in Soil Biology and Biochemistry, vol. 140, 1º gennaio 2020, p. 107642, DOI:10.1016/j.soilbio.2019.107642.
  10. ^ Padda KP, Puri A, Chanway C, Endophytic nitrogen fixation - a possible 'hidden' source of nitrogen for lodgepole pine trees growing at unreclaimed gravel mining sites, in FEMS Microbiology Ecology, vol. 95, n. 11, November 2019, DOI:10.1093/femsec/fiz172.
  11. ^ (EN) In vitro and in vivo analyses of plant-growth-promoting potential of bacteria naturally associated with spruce trees growing on nutrient-poor soils, in Applied Soil Ecology, vol. 149, 1º maggio 2020, p. 103538, DOI:10.1016/j.apsoil.2020.103538.
  12. ^ Puri A, Padda KP, Chanway CP, Sustaining the growth of Pinaceae trees under nutrient-limited edaphic conditions via plant-beneficial bacteria, in PLOS ONE, vol. 15, n. 8, 26 agosto 2020, pp. e0238055, DOI:10.1371/journal.pone.0238055.
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