Intra-specific variability and sex influence allelopathic capacity of Empetrum nigrum

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F25%3A73633224" target="_blank" >RIV/61989592:15310/25:73633224 - isvavai.cz</a>

Result on the web

<a href="https://nsojournals.onlinelibrary.wiley.com/doi/epdf/10.1002/njb.04824" target="_blank" >https://nsojournals.onlinelibrary.wiley.com/doi/epdf/10.1002/njb.04824</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/njb.04824" target="_blank" >10.1002/njb.04824</a>

Result language

angličtina

Original language name

Intra-specific variability and sex influence allelopathic capacity of Empetrum nigrum

Original language description

Allelopathic plant species play significant roles in shaping natural ecosystems. While a high degree of inter-species variation in allelopathic capacities is commonly reported, variation across intra-specific groups and between dioecious sexes is limited. Here we use the ecologically important, allelopathic dwarf shrub Empetrum nigrum to assess how allelopathic capacity varies between intra-specific groups (i.e. the diploid and dioecious ‘nigrum&apos; group and the tetraploid and synoecious ‘hermaphroditum&apos; group of Empetrum) and sex (i.e. male and female plants of the nigrum group). Specifically, we tested Icelandic Empetrum, as its allelopathic nature may influence long-term land degradation across Icelandic highlands. The allelopathic capacity of Empetrum leaves was measured in a series of bioassays as the inhibition of seed germination and seedling root elongation of the grass Festuca richardsonii. A very strong allelopathic response of Empetrum leaves was observed. Intra-specific and sex-related differences in allelopathic capacity were also detected, with the hermaphroditum group possessing a greater germination inhibitory effect compared to the nigrum group, and males of the nigrum group inhibited germination more than females. Targeted liquid chromatography-mass spectrometry (LC-MS) quantification of two known Empetrum allelopathic constituents – Batatasin-III (BIII) and 3,4-dimethoxy-2ʹ,5-dihydroxybibenzyl (DDB) – showed that BIII concentrations were significantly higher in leaves from the hermaphroditum group compared to the nigrum group, but no differences were observed between males and females within the nigrum group. DDB was not detected in the sampled Icelandic Empetrum population. Our results indicate that Empetrum may differentially impact plant interactions and ecosystem processes depending on the relative abundance of Empetrum intra-specific groups and sexes within populations, and that BIII is not solely responsible for the allelopathic capacity of Icelandic Empetrum.

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

10611 - Plant sciences, botany

Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2025

Confidentiality

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

Name of the periodical

NORDIC JOURNAL OF BOTANY

ISSN

0107-055X

e-ISSN

1756-1051

Volume of the periodical

2025

Issue of the periodical within the volume

12

Country of publishing house

DK - DENMARK

Number of pages

11

Pages from-to

"e04824-1"-"e04824-11"

UT code for WoS article

001549064500001

EID of the result in the Scopus database

2-s2.0-105013030611