[Study of Fungi That Causing Anthracnose on Some BroadLeaf Trees in Tartous Provence]

The study was carried out during (2011-2012) to reveal the infection of some Broadleaf trees with anthracnose disease at many sites in Tartous province. The results showed the emergence of similar symptoms of anthracnose disease on a large number of juglandis and citrus trees and a few almonds and pomegranate trees. Laboratory results of samples collected from above mentioned trees indicated that the observed symptoms were resulting from injury of Two genuses of Fungi Marssonina and Colletotrichum which cause the anthracnose disease. The causal agent of juglandis anthracnose was identified as M.juglandis based on the shape and size of conidia, and the causal agents of citrus, almonds and pomegranate anthracnose were identified as C.gloeosporioides and C.acutatum based on morphological, cultural characters and growth rate. The registration of anthracnose on citrus, almond and pomegranate trees is the 1st registration in Syria, where C.acutatum was recorded on citrus petals and limes leaves while C. gloeosporioides was recorded on leaves , branches and fruits of citrus trees, almonds branches and pomegranate fruits. Effect of four media (PDA, OMA, MEA, CzA) was studied in colonies shape, growth and Sporulation of C. gloeosporioides . Results showed that the growth of fungus was maximum on PDA and OMA While sporulation was maximum on OMA . Effect of different degrees of temperature , different levels of pH , and different periods of light was also tested in C. gloeosporioides in vitro. The results indicated that the growth of fungus was maximum on 30°C ,and on pH = (6.5, 6,5.5) ,and the maximum sporulation of C.gloeosporioides When it was exposed to continuous lighting compared with the continuous darkness or alternate lighting (7 hours of darkness, 17 hours of lighting).