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首页> 外文期刊>Mycologia >Ultrastructure of conidium and disjunctor development in the plant pathogenic fungus Monilinia vaccinii-corymbosi
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Ultrastructure of conidium and disjunctor development in the plant pathogenic fungus Monilinia vaccinii-corymbosi

机译：植物病原真菌莫氏念珠菌-Corymbosi分生孢子的超微结构和分离器发育

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Conidium initials in Monilinia vaccinii-corymbosi developed acropetally in moniliform chains. Each was multinucleate and covered by a two-layer wall continuous with that of the initial below. An initial was delimited by the formation of a basal septum. Developing conidia were spherical in shape and interconnected by constricted intercalary regions where septa were located. Disjunctors formed between the two lamellae comprising each septum. A disjunctor consisted of two conical structures with their broad bases facing one another and their tapering ends terminating in invaginations of wall material continuous with the septal lamellae. Septal lamellae, wall invaginations and disjunctors labeled uniformly with WGA-ovomucoid-gold complexes indicating the presence of chitin. Developing disjunctors displaced the septal lamellae causing them to produce conspicuous concave depressions in the cytoplasm at the ends of conidia. Conidium disarticulation occurred when the wall connecting adjacent conidia broke at the septum in each intercalary region. Disarticulated conidia tended to remain in long to short chains interconnected by now elongated and spindle-shaped disjunctors. Mature conidia became highly vacuolated and appeared to lack both lipid bodies and glycogen deposits. Each was covered by a two-layered wall derived from the wall that originally covered conidium initials.
机译：念珠菌念珠菌中的分生孢子首字母在伞形链中呈顶状发育。每个都是多核的，并被两层壁覆盖，该壁与下面的初始壁连续。最初是由基底隔膜的形成界定的。发育中的分生孢子呈球形，并通过隔垫位于狭窄的con间区域相互连接。在组成每个隔片的两个薄片之间形成分离器。分离器由两个圆锥形结构组成，两个圆锥形结构的宽底彼此面对，并且其锥形末端终止于与隔片连续的壁材料侵入。用WGA-卵粘液-金复合物均匀标记的间隔片，壁内陷和分离物表明存在甲壳质。发育中的分离器使间隔片移位，使它们在分生孢子末端的细胞质中产生明显的凹形凹陷。当连接相邻分生孢子的壁在每个inter间区域的隔膜处破裂时，分生孢子发生脱节。分离的分生孢子倾向于留在长链到短链中，而长链和短链通过现在细长的纺锤形分离器相互连接。成熟的分生孢子高度空泡化，似乎缺乏脂质体和糖原沉积物。每个墙都覆盖了一层两层墙，该墙是从最初覆盖分生孢子头的墙衍生而来的。

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