Invasive Species Compendium

Detailed coverage of invasive species threatening livelihoods and the environment worldwide

Abstract

Fungi colonizing of small balsam seeds (Impatiens parviflora DC.) seeds in Wigry National Park.

Abstract

The aim of this study was to assess the extent of colonisation and also the species composition of the fungi colonising the seeds of small balsam (Impatiens parviflora) in the Wigry National Park. The test was carried out in the years 2018-2019. The seeds of I. parviflora were taken at full maturity, at the turn of August and September, from 6 locations in the first year of study and from 9 locations in the second year of study. In the first year the mycological analysis of Impatiens parviflora seeds allowed for isolating 18 species of fungi and 3 taxa referred to as non-cryptogamic or yeastlike and 22 species of fungi and 1 taxa referred to as non-cryptogamic in the second year of study. The highest share in the mycobiota of Impatiens seeds in most cases were Cladosporium genus fungi, primarily C. cladosporioides and C. herbarum, as well as Alternaria alternata. The varied degree of seed colonisation by fungi may be caused by environmental factors, nonetheless fungal species found in the spermosphere may limit the vigour of seeds, and thus reduce the I. parviflora population in a given area. However, to confirm this, further analysis is needed.