Only the adults survive A long-term resistance of Isoetes lacustris to acidity and aluminium toxicity stress in a Bohemian Forest lake

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60077344%3A_____%2F20%3A00524288" target="_blank" >RIV/60077344:_____/20:00524288 - isvavai.cz</a>

Alternative codes found

RIV/60076658:12310/20:43901128

Result on the web

<a href="https://www.sciencedirect.com/science/article/pii/S1470160X19310222?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S1470160X19310222?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.ecolind.2019.106026" target="_blank" >10.1016/j.ecolind.2019.106026</a>

Result language

angličtina

Original language name

Only the adults survive A long-term resistance of Isoetes lacustris to acidity and aluminium toxicity stress in a Bohemian Forest lake

Original language description

The aquatic quillwort Isoetes lacustris L. survived five decades of severe acidification in Cerne Lake (Bohemian Forest, central Europe), but failed to reproduce. To detect which ontogenetic stage is more affected by water acidification and to identify water chemistry thresholds for successful recruitment, experiments were carried out on quillwort sporelings grown in the laboratory, using different pH (4-8) and aluminium (Al) concentrations (0-1000 mu g/L). Growth-related symptoms and Al accumulations in tissues were compared with those observed in sporelings collected in the lake. In the laboratory, the threshold Al concentrations >= 100 mu g/L and pH <= 5.0 reduced absorptive organs (macrogametophyte rhizoids, roots, and root hairs), so that the ratio of below-ground to above-ground sporeling biomass decreased to <1. Nonetheless, stimulatory growth was demonstrated that affected the dose-response relationships of both absorptive and assimilative organs as well as sporeling growth restoration. The sporelings exposed to Al concentrations >= 100 mu g/L accumulated high amounts of Al in their macrogametophytes and roots, but not in leaves. The lake sporelings had markedly longer roots, lower Al accumulations, but more reduced rhizoids and root hairs than those at 100 mu g/L of Al in the laboratory. Even though water acidification was harmful to the shallow-rooted early ontogenetic stages, the in situ population survived due to the resistance and long life span of the deep-rooted adults. The effects of water acidification on sympatric congeneric quillworts as well as the other isoetids and competitive macrophytes in acid-sensitive softwater lakes are discussed, taking into account the influence of exposure to threshold acidity and Al toxicity and also the likelihood of such exposure.

Czech name

—

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

—

OECD FORD branch

10618 - Ecology

Project

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

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2020

Confidentiality

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

Name of the periodical

Ecological Indicators

ISSN

1470-160X

e-ISSN

—

Volume of the periodical

111

Issue of the periodical within the volume

APR 2020

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

11

Pages from-to

106026

UT code for WoS article

000512603300065

EID of the result in the Scopus database

2-s2.0-85077733483