Unraveling the diversity of hyphal explorative traits among Rhizophagus irregularis genotypes

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388971%3A_____%2F24%3A00598483" target="_blank" >RIV/61388971:_____/24:00598483 - isvavai.cz</a>

Result on the web

<a href="https://link.springer.com/article/10.1007/s00572-024-01154-8" target="_blank" >https://link.springer.com/article/10.1007/s00572-024-01154-8</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s00572-024-01154-8" target="_blank" >10.1007/s00572-024-01154-8</a>

Result language

angličtina

Original language name

Unraveling the diversity of hyphal explorative traits among Rhizophagus irregularis genotypes

Original language description

Differences in functioning among various genotypes of arbuscular mycorrhizal (AM) fungi can determine their fitness under specific environmental conditions, although knowledge of the underlying mechanisms still is very fragmented. Here we compared seven homokaryotic isolates (genotypes) of Rhizophagus irregularis, aiming to characterize the range of intraspecific variability with respect to hyphal exploration of organic nitrogen (N) resources, and N supply to plants. To this end we established two experiments (one in vitro and one in open pots) and used N-15-chitin as the isotopically labeled organic N source. In Experiment 1 (in vitro), mycelium of all AM fungal genotypes transferred a higher amount of N-15 to the plants than the passive transfer of N-15 measured in the non-mycorrhizal (NM) controls. Noticeably, certain genotypes (e.g., LPA9) showed higher extraradical mycelium biomass production but not necessarily greater N-15 acquisition than the others. Experiment 2 (in pots) highlighted that some of the AM fungal genotypes (e.g., MA2, STSI) exhibited higher rates of targeted hyphal exploration of chitin-enriched zones, indicative of distinct N exploration patterns from the other genotypes. Importantly, there was a high congruence of hyphal exploration patterns between the two experiments (isolate STSI always showing highest efficiency of hyphal exploration and isolate L23/1 being consistently the lowest), despite very different (micro) environmental conditions in the two experiments. This study suggests possible strategies that AM fungal genotypes employ for efficient N acquisition, and how to measure them. Implications of such traits for local mycorrhizal community assembly still need to be understood.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10606 - Microbiology

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2024

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Mycorrhiza

ISSN

0940-6360

e-ISSN

1432-1890

Volume of the periodical

34

Issue of the periodical within the volume

4

Country of publishing house

DE - GERMANY

Number of pages

14

Pages from-to

303-316

UT code for WoS article

001238183500001

EID of the result in the Scopus database

2-s2.0-85195187605