Drought accentuates the role of mycorrhiza in phosphorus uptake, part II - The intraradical enzymatic response

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388971%3A_____%2F24%3A00597584" target="_blank" >RIV/61388971:_____/24:00597584 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/67985939:_____/24:00597584

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S0038071724001032?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0038071724001032?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.soilbio.2024.109414" target="_blank" >10.1016/j.soilbio.2024.109414</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Drought accentuates the role of mycorrhiza in phosphorus uptake, part II - The intraradical enzymatic response

Popis výsledku v původním jazyce

Edaphic drought reduces phosphorus (P) diffusivity in soils and arbuscular mycorrhizal fungi (AMF) can compensate for this. We recently showed, along a high- resolution substrate moisture gradient, that AMF effectively deliver P to plants under drought from areas beyond the reach of roots. Here, we investigated how edaphic drought affected the active sites of P exchange between AMF and plants inside the roots using different histochemical stains. Inoculation of dwarf tomato plants (cv. MicroTom) with AMF ( Rhizophagus irregularis) ) slightly increased water retention (decreased the water potential) in substrates, decreased root length, and increased shoot P concentrations compared to non-mycorrhizal plants. Despite their reduced root length, mycorrhizal tomato plants showed a surprisingly congruent physiological drought stress response with their non-mycorrhizal counterparts. However, the activity of alkaline phosphatase (ALP) detected in intraradical fungal structures decreased significantly as soil and xylem water potentials decreased. The decline of ALP activity with increasing drought intensity was accompanied by a reduction of elevated P concentration benefits in shoots of mycorrhizal plants compared to non-mycorrhizal plants. Therefore, we conclude that edaphic drought can restrict the nutritional advantages that plants receive from AMF at the root-fungal interface. This is one of the direct consequences of drought.

Název v anglickém jazyce

Drought accentuates the role of mycorrhiza in phosphorus uptake, part II - The intraradical enzymatic response

Popis výsledku anglicky

Edaphic drought reduces phosphorus (P) diffusivity in soils and arbuscular mycorrhizal fungi (AMF) can compensate for this. We recently showed, along a high- resolution substrate moisture gradient, that AMF effectively deliver P to plants under drought from areas beyond the reach of roots. Here, we investigated how edaphic drought affected the active sites of P exchange between AMF and plants inside the roots using different histochemical stains. Inoculation of dwarf tomato plants (cv. MicroTom) with AMF ( Rhizophagus irregularis) ) slightly increased water retention (decreased the water potential) in substrates, decreased root length, and increased shoot P concentrations compared to non-mycorrhizal plants. Despite their reduced root length, mycorrhizal tomato plants showed a surprisingly congruent physiological drought stress response with their non-mycorrhizal counterparts. However, the activity of alkaline phosphatase (ALP) detected in intraradical fungal structures decreased significantly as soil and xylem water potentials decreased. The decline of ALP activity with increasing drought intensity was accompanied by a reduction of elevated P concentration benefits in shoots of mycorrhizal plants compared to non-mycorrhizal plants. Therefore, we conclude that edaphic drought can restrict the nutritional advantages that plants receive from AMF at the root-fungal interface. This is one of the direct consequences of drought.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10606 - Microbiology

Projekt

<a href="/cs/project/GA20-08475S" target="_blank" >GA20-08475S: Arbuskulární mykorhiza a sucho: hledání skrytých přínosů</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2024

Kód důvěrnosti údajů

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

Název periodika

Soil Biology and Biochemistry

ISSN

0038-0717

e-ISSN

1879-3428

Svazek periodika

193

Číslo periodika v rámci svazku

June 24

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

8

Strana od-do

109414

Kód UT WoS článku

001289926800001

EID výsledku v databázi Scopus

2-s2.0-85189031963