KNU IFS 2018 Annual International Symposium of Institute of Forest Science (2018.09)바로가기
페이지
pp.45-45
저자
Ki Woo Kim
언어
영어(ENG)
URL
https://www.earticle.net/Article/A450163
원문정보
초록
영어
Brown spots with yellow halos occurred on naturally-infected leaves of Quercus acutissima (sawtooth oak) in Suwon, Korea. Field emission scanning electron microscopy revealed hyphal branching and prevalence of spore chains on the leaf adaxial surface. Non-glandular trichomes were usually colonized by septate hyphae. Hyphae coiled the trichomes and appeared to inhibit the unfolding of trichome rays. Plant cell wall modifications and epidermal shrinkage of trichomes were apparent around the hyphae. Hyphal growth appeared to dissolve the non-glandular trichomes on the abaxial leaf surface. Transmission electron microscopy revealed the presence of fungal hyphae in the naturally-infected trichomes of the oak species. Concentric bodies and intrahyphal hyphae were often found in the hyphal cytoplasm. These results suggest that the foliar trichomes of sawtooth oak could serve as fungal infection sites, as well as protective structures against a variety of external stresses to the woody plant.
저자
Ki Woo Kim [ School of Ecology and Environmental System, Kyungpook National University ]