博士課程2年の原田栞里さんが、オークランド（NZ）で開催された第20回国際微生物生態学会（The 20th International Symposium on Microbial Ecology）にて発表を行いました。
演題：Comparative morphological responses of the ammonia fungus Sagaranella tylicolor to litter fall layer thickness.
演者：Shiori Harada（博士課程2年）, Masayuki Shiba（客員研究員）, Akira Suzuki, Tatsuya Fukuda
要旨：
The stipe lifts the pileus above the LF (litter fall) layer to expose it and disperse spores, but does the height from the ground to the pileus depending on the thickness of the LF layer? To answer this question, we used ammonia fungi. Ammonia fungi are defined as a chemoecological group of fungi that colonize forest floors after decomposition of nitrogenous resources such as animal corpses, feces, and urine (Sagara, 1975). Thus, experimental plots were established on forest floors in Shizuoka Prefecture, Japan, where the thickness of the LF layer was artificially manipulated to range from 0 to 4 cm, and urea was applied as a nitrogen resource. This approach makes it possible to analyze the adaptive strategies of ammonia fungi in response to resource supply. In this study, we focused on the saprotrophic fungus Sagaranella tylicolor. As a result, pileus diameter, stipe length, and total weight exhibited relative growth with increasing LF layer thickness up to 3 cm. However, at an LF layer thickness of 4 cm, elongation was observed only in the stipe length. Previous studies have shown that the average thickness of the LF layer around the experimental site is 3.5 cm. Therefore, S. tylicolor can adapt through continuous morphological changes up to 3 cm, but at 4 cm it cannot maintain the same morphology and may shift to a growth pattern that prioritizes stipe elongation, resulting in a morphology suited to penetrating the LF layer and dispersing spores.