A genus of fungi in the order Pyralidae, class Oomycetes, subphylum Flagellates. A pathogenic fungus that parasitizes plants and causes seedling damping-off and cotton rot. It generally rots seedlings and roots, forming cotton-like colonies. The zoosporangium (presporangium) is spherical to lemon-shaped and looks like a single conidium at the end of a stalk. The contents turn into numerous zoospores that break the membrane and swim out ( P. aphanidermatum (Edson) Fitzp.), and some produce conidia ( P. debaryanum Hesse). Source: Heibonsha World Encyclopedia, 2nd Edition Information |
鞭毛菌亜門卵菌綱ツユカビ目に含まれる1属の菌類。植物に寄生して苗立枯(なえたちがれ)病,綿腐(わたぐされ)病を起こす病原菌。一般に苗や根の部分を腐敗させて,綿のようなコロニーを形成する。遊走子囊(前胞子囊)は球形~レモン形で,あたかも柄の先端にできた1個の分生子のように見える。内容物は多数の遊走子となり膜を破って泳ぎ出したり(P.aphanidermatum (Edson) Fitzp.),分生子をつくるものもある(P.debaryanum Hesse)。
出典 株式会社平凡社世界大百科事典 第2版について 情報 |
… [Radical reactions and ionic reactions] Instead...
An international highway that runs through the Ame...
Located on the summit of Mt. Gassan in Tachikawa-c...
...an ancient civilization in India that reached ...
Italian copperplate engraver. Born in Arenzano ne...
…He obtained his degree in economics in 1895, but...
Electrons are emitted from the atomic nuclei of r...
〘noun〙 (translation of disjunction) In traditional...
...Therefore, it should be noted that the use of ...
…The administrative unit was expanded to parish u...
An arboreal lizard (illustration) of the Agamidae ...
→Old Asian languages Source : Heibonsha Encycloped...
Basically, military songs are songs sung by soldi...
The capital of the Republic of Turkey. It is loca...
...Haya, Honbaya (Tokyo), Kuki (Gunma Prefecture)...