| dc.description.abstract | Kemenyan toba (Styrax sumatrana) is one of the native tree species of North
Sumatra and widely distributed in Tapanuli and Dairi. In its growth process,
Kemenyan produce resin that can be utilize as pharmacological source and
industry. Together with the growth, Kemenyan toba will form a symbiosis with
endophytic fungi. Endophytic fungi are capable of producing compounds similar to
those produced by their host. This research aims to identify the types of endophytic
fungi from kemenyan toba and its potential utilization as phosphate solubilizers and
cellulose decomposers. The tested fungal isolates are collections from the Soil
Biology Laboratory, Faculty of Agriculture, University of Sumatera Utara. The
potential of endophytic fungi as phosphate solubilizers is tested using Pikovskaya
media, while the potential as cellulose decomposers is tested using Carboxy Methyl
Cellulose (CMC) media. The identification results of endophytic fungi from leaf
isolates belong to the genus Aspergillus. Meanwhile, endophytic fungi from the stem
bark were found in the genera Aspergillus, Cunninghamella, and Arthrinium. The
formation of clear zones in the tested isolates indicates that Kemenyan toba has the
potential as a phosphate solubilizer and cellulose decomposer. The phosphate
solubility index from leaves ranges from 2.72 to 4.87 with medium to high criteria
and from bark in the genus Aspergillus ranges from 2.90 to 4.7 with medium to high
categories; in the genus Arthrinium, it is 3.94 with a medium category; and in the
genus Cunninghamella, it is 4.46 and 4.54 with high categories. Meanwhile, the
cellulolytic index from leaves ranges from 0.79 to 2.34 with low to high criteria and
from bark in the genus Aspergillus ranges from 0.76 to 2.73 with low to high
categories; in the genus Arthrinium, it is 0.67 with a low category; and in the genus
Cunninghamella, it is 1.22 (medium) and 0.78 (low). | en_US |
