사과겹무늬썩음병균 Botryosphaeria dothidea를 pectin-polypectate 배지(培地)와 사과배지(培地)에 배양(培養)하여 pectin질(質) 분해효소(分解酵素)의 생산(生産)과 활성(活性)을 조사하였다. exo-polygalacturonase와 exo-polymethylgalacturonase의 활성은 사과배지에서 배양 6일에 각각 6.4 와 7.2 units로 최대의 활성을 나타내었고, 인공배지에서는 배양 8일에 각각 5.9 와 5.3 units 의 활성을 나타내었으나 사과배지에 비해 낮았다. endo-polygalactu-ronase와 endo- polymethylgalacturonase는 인공배지에서 각각 4.4 와 16.2 units로 배양 8 일과 10일에서 최대활성을 나타내었으나 사과배지에서는 배양 8일에 각각 3.2와 6.7 units로 낮은 활성을 보였다. pecti-nmethyl-trans-eliminase와 polygalacturonate-trans-eliminase의 활성은 사과배지보다 인공배지에서 높게 나타났으며, 균 생장은 인공배지와 사과배지에서 각각 배양 6일과 8일에 최고의 생장을 나타내었다.
Botryosphaeria dothidea causing apple fruit rot was cultured in pectin-polypectate mineraI salts or apple mediumss, to investigate pectolytic enzyme production and activity. Exo-polygalacturonase(PG) and exo-polymethylgalacturonase (PMG) in apple medium showed maximum of activity to 6.4 and 7.2 units at six days of culture, respectively. Their maximum activity in pectin-polypectate mineral salts medium was 5.9 and 5.3 units at eight days of culture lower than in apple medium respectively. Endo-PG and endo-PMG in pecin-polypectate mineral salts medium were maximum of activity to 4.4 and 16.2 units at six and eight days of culture, respectively, but activities in apple medium were 3.2 and 6.7 units at eight days of culture. Activity of polygalacturonate-trans-eliminase(PGTE) and pectinmethyl-trans-eliminase(PMTE) was higher in pectin-polypectate mineral salts medium than in apple medium. Fungal growth was maximum at six and eight days of culture in pectin-polypectate mineral salts and apple medium, respectively.
