Ugrás a tartalomhoz

 

Arbuscular mycorrhizal colonisation of roots of grass species differing in invasiveness

  • Metaadatok
Tartalom: http://real.mtak.hu/10150/
Archívum: MTA Könyvtár
Gyűjtemény: Status = Unpublished


Type = Article
Cím:
Arbuscular mycorrhizal colonisation of roots of grass species differing in invasiveness
Létrehozó:
Endresz, G.
Somodi, I.
Kalapos, T.
Kiadó:
Akadémiai Kiadó
Dátum:
2013
Téma:
QK Botany / növénytan
QK30 Plant ecology. Plant ethology / növényökológia
Tartalmi leírás:
Recent research indicates that the soil microbial community, particularly arbuscular mycorrhizal
fungi (AMF), can influence plant invasion in several ways. We tested if 1) invasive species are
colonised by AMF to a lower degree than resident native species, and 2) AMF colonisation of native
plants is lower in a community inhabited by an invasive species than in an uninvaded resident
community. The two tests were run in semiarid temperate grasslands on grass (Poaceae) species,
and the frequency and intensity of mycorrhizal colonisation, and the proportion of arbuscules and
vesicles in plant roots have been measured. In the first test, grasses representing three classes of
invasiveness were included: invasive species, resident species becoming abundant upon
disturbance, and non-invasive native species. Each class contained one C3 and one C4 species. The
AMF colonisation of the invasive Calamagrostis epigejos and Cynodon dactylon was consistently
lower than that of the non-invasive native Chrysopogon gryllus and Bromus inermis, and contained
fewer arbuscules than the post-disturbance dominant resident grasses Bothriochloa ischaemum and
Brachypodium pinnatum. The C3 and C4 grasses behaved alike despite their displaced phenologies
in these habitats. The second test compared AMF colonisation for sand grassland dominant grasses
Festuca vaginata and Stipa borysthenica in stands invaded by either C. epigejos or C. dactylon, and
in the uninvaded natural community. Resident grasses showed lower degree of AMF colonisation in the invaded stand compared to the uninvaded natural community with F. vaginata responding so to
both invaders, while S. borysthenica responding to C. dactylon only. These results indicate that
invasive grasses supposedly less reliant on AMF symbionts have the capacity of altering the soil
mycorrhizal community in such a way that resident native species can establish a considerably
reduced extent of the beneficial AMF associations, hence their growth, reproduction and ultimately
abundance may decline. Accumulating evidence suggests that such indirect influences of invasive
alien plants on resident native species mediated by AMF or other members of the soil biota is probably more the rule than the exception.
Nyelv:
magyar
magyar
Típus:
Article
PeerReviewed
info:eu-repo/semantics/article
Formátum:
text
text
Azonosító:
Endresz, G. and Somodi, I. and Kalapos, T. (2013) Arbuscular mycorrhizal colonisation of roots of grass species differing in invasiveness. Community Ecology, 14 (1). pp. 67-76. ISSN 1585-8553 (Unpublished)
Kapcsolat:
doi:10.1556/ComEc.14.2013.1.8
-