The indigenous arbuscular mycorrhizal fungal colonisation potential in potato roots is affected by agricultural treatments
Laen...
Kuupäev
2018
Kättesaadav alates
Autorid
Loit, Kaire
Soonvald, Liina
Kukk, M.
Astover, Alar
Runno-Paurson, Eve
Kaart, Tanel
Öpik, Maarja
Ajakirja pealkiri
Ajakirja ISSN
Köite pealkiri
Kirjastaja
Abstrakt
There is an urgent need to develop novel approaches to enhance sustainable agriculture
while not reducing cr
op yields. Arbuscular mycorrhizal (AM) fungi establish symbiotic
associations with most crop plants improving plant performance and soil health. This study
investigated the extent of
colonisation
of potato roots by indigenous AM
fungi
in the arable soil
under
conventional
and organic farming systems. Potato roots had greater AM fungal colonisation
levels under
organic
than
conventional
farming, though in general, root colonisation levels were
extremely low
in both farming
systems
. Pota
to root AM
fungal
colonisation
was
lower
with
higher soil P content
and
higher with higher annual C
input.
Trap plant root AM fungal
colonisation was
considerably higher than in field potato roots and showed that soil mycorrhizal
inoculum potential was hig
her in organic than in conventional farming.
Thus, the positive impact
of manure application in organic fields to the potato AM fungal colonisation can be explained by
previous higher total annual C fresh organic matter input and lower soil P content under
treatment.
Furthermore, the natural AM fungal abundance in the soil was sufficient to colonise trap plant
roots, suggesting a low mycorrhizal dependence of the studied potato cultivar.
Kirjeldus
Articles
Märksõnad
cropping systems, Glomeromycota, management practices, Sol anum tuberosum L., articles