The objective of this study is to identify some species of mycorrhizal fungi
coexisting with tomato roots in the Syrian coast. Samples were collected from five sites in
two different regions: Lattakia (sites: Siano and ALbrjan) and Tartous (sites:
Majdalon
Elbahr, Mayaar Shaker and Hrysoon). Four samples of soil and tomato roots were
collected from each site and mixed together to form a composite sample/site.
Morphological characterization of isolated fungi was based on universally adopted
taxonomic keys, and on the classification keys approved by the Plant Protection Research
Institute of Iran. Six types of mycorrhizal fungi belonging to 5 species were identified in
the different sites. Paraglomus laccaltum was present in one site (Siano), Septoglomus
constrictum was isolated from 2 sites (Mayaar Shaker and Majdalon Elbahr),
Claroideoglomus etunicatum was also isolated from 2 sites (Mayaar Shaker and Siano),
Simiglomus hoi was present in 3 sites (Siano, Majdalon Elbahr and ALbrjan), Glomus
fasciculatum was present in four sites (Siano, Mayaar Shaker, ALbrjan and Hrysoon) and
Glomus clarum was present in four sites (Hrysoon, Siano, Mayaar Shaker, and Majdalon
Elbahr).
A pots experiment was carried out using two soil types (clay loam and sand
soil) to study the interaction between VA-mycorrhizal (My) and some soil fungi
under the effect of rock phosphat on growth of onion plant.
The interaction between mycorrhiz
al (My) and other soil fungi increased
the fresh weight of root in comparison with mycorrhizal (My) alone, however
the differences were not significant except for (Saccharomyces+Mycorrhiza)
(Sac+My) similar results were obtained in sandy loam soil.
The percentage of root colonization on the growth of onion plant was not
effected by the interaction between mycorrhiza (My) and other osil fungi
(Actinomucor, Aspergillus, Penicillium, Saccharomyces) (Act, Asp, P, Sac). This
value, however was high in the second harvest in treatment mycorrhiza (My)
and (My+Sac) (My+Act) The VAM- fungus alone and their interaction with
other soil fungi increased the plant growth.
