VOLUM OMAGIAL - Facultatea de Ştiinţe ale Naturii şi Ştiinţe Agricole

Ovidius University Annals of Natural Sciences, Biology – Ecology Series Volume 14, 2010
LIMITATIVE MYCOTIC FACTORS FOR SOME PLANTS FROM THE
BULGARIAN COAST OF THE BLACK SEA
Gavril NEGREAN
Universitatea din Bucureşti, Grădina Botanică, Şoseaua Cotroceni nr. 32, Bucureşti
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Abstract: We present a list of 119 parasitic fungi collected in Bulgaria from the following groups:
Peronosporales, Ascomycetes, Uredinales, Ustilaginales, Agaricales, Polyporales, Gasteromycetales and Fungi
Anamorphici. An alien rust new for Bulgaria is also found (Puccinia komarovii).
There are also some commentaries regarding the rare plants guested by different fungi; other fungi may
contribute to the diminishing of the damages produces by some weeds; we draw attention about some foreign
fungi with invasive character.
Keywords: New parasitic fungi for Bulgaria, invasive fungi, matrix nova, Dobrogea, Bulgaria.
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1. Introduction.
Following our preoccupa-tion regarding the
limitative factors for the vascular plants on the
Black Sea, we present the results of our
investigations on the Bulgarian Dobrogean Black
Sea side. Our observations from the previous years
were published within several notes [1, 2, 3, 4, 19].
2. Material and Methods.
The fungi were collected from the areas nearby
the sea side between Duranculac and the
embouchure of the Batovo valley, in April and June
2006 and April – October 2008. A very small
amount of fungi collectetd from other areas of
Bulgaria, they also listed. The big majority are
coming from the Dobrich district. The materials
were collected on the way and their conditioning
was donje in conformity with the usual techniques
and determinated by help of the instruments we had
at our disposal [5, 6, 7, 8, 9, 10, 11, 12, 13, 14].
The nomenclature of the authors of the hosts
after Flora Romaniae [15] and Flora Europaea [16,
17]. The conditionated and determined materials
were deposited in the Herbarium of the University
from Bucureşti [BUC] and partially in the
Herbarium of the Botanic Institute from Sofija
[SOM]. The list is alphabetically coordinated, on
big groups offungi and the coronims from North to
South.
3. Results and Discussions
In these two years mentioned, there were
collected 217 specimens, representing the analized
groups of fungi (Table 1). Apparently, a number of
16 combinations fungus – host plant („matrix
nova”), incase of the Peronosporales (Table 2), and
were not indicated since Bulgaria [14]. Among
Erysiphaceae, 19 combinations [8], alike species
have not been found in Bulgaria. Likewise, a
number of 15 combinations between Uredinales [7]
do not seem to be cited from Bulgaria. Puccinia
komarovii rust, guesting the alien plant Impatiens
parviflora DC. is new for the Bulgarian mycobiota.
Sozological aspects.
Following a long cohabitation (co evolution)
between fungi and their hosts there has been created
an equilibrum, so that we have barely noticed
ruptures of this equilibrum. Among the rare guested
plants, we mention the following: Astragalus
cornutus (important damages locally), Buglossoides
arvensis subsp. sibthorpiana, Centaurea
salonitana, Centaurea thracica, Clypeo-la
jonthlaspi, Dianthus leptopetalus, Euphorbia
myrsinites, Gypsophila pallasii, Hieracium bauhinii,
Leymus racemosus subsp. sabulosus, Limonium
ISSN-1453-1267 © 2010 Ovidius University Press