Počet záznamů: 1
Mycorrhiza governs plant-plant interactions through preferential allocation of shared nutritional resources: A triple (13C, 15N and 33P) labeling study
- 1.
SYSNO ASEP 0566411 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Mycorrhiza governs plant-plant interactions through preferential allocation of shared nutritional resources: A triple (13C, 15N and 33P) labeling study Tvůrce(i) Faghihinia, Maede (MBU-M) ORCID
Jansa, Jan (MBU-M) RID, ORCIDČíslo článku 1047270 Zdroj.dok. Frontiers in Plant Science. - : Frontiers Research Foundation - ISSN 1664-462X
Roč. 15, č. 13 (2022)Poč.str. 19 s. Jazyk dok. eng - angličtina Země vyd. CH - Švýcarsko Klíč. slova arbuscular mycorrhizal symbiosis ; carbon ; isotopic labeling ; mineral nutrients ; plant competition and co-existence ; preferential resource allocation. Vědní obor RIV EE - Mikrobiologie, virologie Obor OECD Microbiology CEP LK11224 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy EF18_053/0017705 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy Způsob publikování Open access Institucionální podpora MBU-M - RVO:61388971 UT WOS 000904779300001 EID SCOPUS 85145098660 DOI 10.3389/fpls.2022.1047270 Anotace Plant-plant interactions and coexistence can be directly mediated by symbiotic arbuscular mycorrhizal (AM) fungi through asymmetric resource exchange between the plant and fungal partners. However, little is known about the effects of AM fungal presence on resource allocation in mixed plant stands. Here, we examined how phosphorus (P), nitrogen (N) and carbon (C) resources were distributed between coexisting con- and heterospecific plant individuals in the presence or absence of AM fungus, using radio- and stable isotopes. Congeneric plant species, Panicum bisulcatum and P. maximum, inoculated or not with Rhizophagus irregularis, were grown in two different culture systems, mono- and mixed-species stands. Pots were subjected to different shading regimes to manipulate C sink-source strengths. In monocultures, P. maximum gained more mycorrhizal phosphorus uptake benefits than P.bisulcatum. However, in the mixed culture, the AM fungus appeared to preferentially transfer nutrients (33P and 15N) to P.bisulcatum compared to P. maximum. Further, we observed higher 13C allocation to mycorrhiza by P.bisulcatum in mixed- compared to the mono-systems, which likely contributed to improved competitiveness in the mixed cultures of P.bisulcatum vs. P. maximum regardless of the shading regime. Our results suggest that the presence of mycorrhiza influenced competitiveness of the two Panicum species in mixed stands in favor of those with high quality partner, P. bisulcatum, which provided more C to the mycorrhizal networks. However, in mono-species systems where the AM fungus had no partner choice, even the lower quality partner (i.e., P.maximum) could also have benefitted from the symbiosis. Future research should separate the various contributors (roots vs. common mycorrhizal network) and mechanisms of resource exchange in such a multifaceted interaction. Pracoviště Mikrobiologický ústav Kontakt Eliška Spurná, eliska.spurna@biomed.cas.cz, Tel.: 241 062 231 Rok sběru 2023 Elektronická adresa https://www.frontiersin.org/articles/10.3389/fpls.2022.1047270/full
Počet záznamů: 1