VOLUM OMAGIAL - Facultatea de Ştiinţe ale Naturii şi Ştiinţe Agricole

Limitative mycotic factors from some plants.../ Ovidius University Annals of Biology-Ecology 14: 3-15 (2010)
meyeri, Onosma rigidum, Potentilla taurica, Rhagadiolus
stellatus, Scilla bithynica, Sherardia arvensis
L. subsp. maritima etc.
Some plants are extremely important from the
sozological point of view, taking into consideration
that they are in contact with new climatic
conditions being subjected to the eventual
speciation phenomena. It will be the case of Astragalus
cornutus, Beta trigyna, Carduus pycnocephalus,
Euphorbia dobrogensis, Medicago arabica,
Pimpinella peregrina, Plumbago europaea, Ranunculus
oxyspermus, Rumex tuberosus subsp. tuberosus,
Scilla bithynica etc.
Some fungi can have a certain play in
diminishing the population of some weeds,
contributiong this way to the diminution of the
damages they produce, such as Amaranthus retroflexus,
Avena fatua, Bassia scoparia, Carduus
acanthoides, Lycium barbarum, Malva sylvestris,
Picris echioides (carantin plant), Rumex patientia
etc.
I collecting some alien fungi with invasiv
character in present (Puccinia malvacearum, Erysiphe
mougeotii, Puccinia helianthi) or in future
(Puccinia komarovii, Puccinia pelargonii-zonalis).
The hyperparasite Ampelomyces quisqua-lis,
also contributes the diminution of the damnages
produced by some mildew, there have been registered
some cases.
Last but not least, we consider that the fungi
have their right to live.
4. Conclusions.
From the 115 fungi collec-ted from the seaside
of the Bulgarian Dobrogea, the most majority are
plants parasites. Most of them belong the groups:
Peronsporales, Erysiphaceae, Uredinales and Fungi
Anamorphici. The results are important ones: a new
adventitious parasite rust for the Bulgarian
mycobiota and a number of 50 combinations from
Bulgaria apparently not odentiofied in their form by
now. We ascertained that following a long coexistence,
between fungi and their hosts, the plants,
there has been created a rather stable equilibrium.
4
LIST OF SPECIES
PERONOSPORALES
Albugo amaranthi (Schwein.) O. Kuntze
(Wilsonia bliti (Biv.) Thines), matrix:
Amaranthus retroflexus L. - Camen Briag,
centrum, in locis ruderalis, 43º27′20.83″N,
28º33′04.63″E, alt. circa 35m, 23 X 2008, G.
Negrean (11.594) [BUC]. Cavarna S, prope hotel,
in locis ruderalis, 43º21′17.41″N, 28º21′17.41″E,
alt. circa 30 m, 10 VIII 2008, G. Negrean (11.484)
[BUC].
Albugo candida (Pers.) Roussel, matrix:
Alyssum desertorum Stapf - Bălgarevo E, Cap
Caliacra W 2 km, in herbosis et petrosis, 14 IV
2006, G. Negrean (7065c) [BUC].
Alyssum hirsutum Bieb. - Duranculac E, ad littore
Mare Nigrum, in locis ruderalis, 43º41′908″N,
28º34′300″E, alt. circa 5 m, 11 IV 2008, G.
Negrean (10.220) [BUC].
Camelina rumelica Velen. - Cavarna E, in
herbosis, 12 IV 2008, G. Negrean (10.256) [BUC].
Capsella bursa-pastoris (L.) Medicus - Balcic,
centrum, in cortis moscheii, ruderal, 13 IV 2006, G.
Negrean (7043) [BUC]. Balcic, centrum, ruderal, 4
VI 2006, G. Negrean (7252) [BUC]. Sofija S, prope
Hotel Vitosha (N), ruderal, 24 VI 2006, G. Negrean
(7370).
Clypeola jonthlaspi L. - Bălgarevo E, ut Cap
Caliacra, in herbosis, 14 IV 2006, G. Negrean
(7072a) [BUC]. Cavarna E, in herbosis,
43º24′25.14″N, 28º22′19.22″E, alt. circa 60 m, 12
IV 2008, G. Negrean (10.291) [BUC].
Sisymbrium loeselii L. - Sofija S, prope Univ.
Technica, 21 VI 2006, G. Negrean (7323) [BUC].
Sofija S, prope Hotel Vitosha (N), ruderal, 24 VI
2006, G. Negrean (7382) [BUC].
Sisymbrium orientale L. s. l. - Duranculac E, ad
littore Mare Nigrum, in locis ruderalis,
43º41′908″N, 28º34′300″E, alt. circa 5 m, 9 V
2008, G. Negrean (10.436) [BUC].
Albugo portulacae (DC. ex Duby) O. Kuntze,
matrix:
Portulaca oleracea L. subsp. oleracea - Sozopol,
in arenosis, 42º24′05.22″N, 27º42′33.32″E, alt.
circa 15 m, 9 VIII 2008, G. Negrean (11.888)
[BUC].