Počet záznamů: 1

Utilization of organic nitrogen by arbuscular mycorrhizal fungi-is there a specific role for protists and ammonia oxidizers?

SYSNO ASEP	0489043
Druh ASEP	J - Článek v odborném periodiku
Zařazení RIV	J - Článek v odborném periodiku
Poddruh J	Článek ve WOS
Název	Utilization of organic nitrogen by arbuscular mycorrhizal fungi-is there a specific role for protists and ammonia oxidizers?
Tvůrce(i)	Bukovská, Petra (MBU-M)_{RID, ORCID} Bonkowski, M. (DE) Konvalinková, Tereza (MBU-M)_{RID, ORCID} Beskid, Olena (MBU-M)_RID Hujslová, Martina (MBU-M)_{RID, ORCID} Püschel, David (MBU-M)_{RID, ORCID} Řezáčová, Veronika (MBU-M)_ORCID Gutierrez-Nunez, M.S. (MX) Gryndler, Milan (MBU-M)_{RID, ORCID} Jansa, Jan (MBU-M)_{RID, ORCID}
Zdroj.dok.	Mycorrhiza. - : Springer - ISSN 0940-6360 Roč. 28, č. 3 (2018), s. 269-283
Poč.str.	15 s.
Jazyk dok.	eng - angličtina
Země vyd.	US - Spojené státy americké
Klíč. slova	N-15-labeling ; Metatranscriptomics ; Organic nitrogen (N)
Vědní obor RIV	EE - Mikrobiologie, virologie
Obor OECD	Microbiology
CEP	GA18-04892S GA ČR - Grantová agentura ČR
	LK11224 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy
Institucionální podpora	MBU-M - RVO:61388971
UT WOS	000427387100007
EID SCOPUS	85042117862
DOI	10.1007/s00572-018-0825-0
Anotace	Arbuscular mycorrhizal (AM) fungi can significantly contribute to plant nitrogen (N) uptake from complex organic sources, most likely in concert with activity of soil saprotrophs and other microbes releasing and transforming the N bound in organic forms. Here, we tested whether AM fungus (Rhizophagus irregularis) extraradical hyphal networks showed any preferences towards certain forms of organic N (chitin of fungal or crustacean origin, DNA, clover biomass, or albumin) administered in spatially discrete patches, and how the presence of AM fungal hyphae affected other microbes. By direct N-15 labeling, we also quantified the flux of N to the plants (Andropogon gerardii) through the AM fungal hyphae from fungal chitin and from clover biomass. The AM fungal hyphae colonized patches supplemented with organic N sources significantly more than those receiving only mineral nutrients, organic carbon in form of cellulose, or nothing. Mycorrhizal plants grew 6.4-fold larger and accumulated, on average, 20.3-fold more N-15 originating from the labeled organic sources than their nonmycorrhizal counterparts. Whereas the abundance of microbes (bacteria, fungi, or Acanthamoeba sp.) in the different patches was primarily driven by patch quality, we noted a consistent suppression of the microbial abundances by the presence of AM fungal hyphae. This suppression was particularly strong for ammonia oxidizing bacteria. Our results indicate that AM fungi successfully competed with the other microbes for free ammonium ions and suggest an important role for the notoriously understudied soil protists to play in recycling organic N from soil to plants via AM fungal hyphae.
Pracoviště	Mikrobiologický ústav
Kontakt	Eliška Spurná, eliska.spurna@biomed.cas.cz, Tel.: 241 062 231
Rok sběru	2019

Počet záznamů: 1