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首页> 外文期刊>Protoplasma: An International Journal of Cell Biology >DIFFERENTIAL CYTOPLASM-PLASMA MEMBRANE-CELL WALL ADHESION PATTERNS AND THEIR RELATIONSHIPS TO HYPHAL TIP GROWTH AND ORGANELLE MOTILITY
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DIFFERENTIAL CYTOPLASM-PLASMA MEMBRANE-CELL WALL ADHESION PATTERNS AND THEIR RELATIONSHIPS TO HYPHAL TIP GROWTH AND ORGANELLE MOTILITY

机译：胞浆间质膜细胞壁粘附模式的差异及其与HIP的增长和器官活动性的关系

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Plasmolysis of hyphae of the oomycetes Saprolegnia ferax and Achlya ambisexualis and the ascomycete Neurospora crassa produced abundant cytoplasmic strands between the retracted cytoplasm and punctate adhesions of the plasma membrane to the cell wall. These strands formed throughout the length of mature hyphae and are the first demonstration of Hechtian strands in hyphae. In contrast to similar strands in various plant cells, the strands in Saprolegnia lacked endoplasmic reticulum but contained F-actin, suggesting similarity between their adhesion sites and focal contacts in animal cells. However, strand adhesion to the wall was insensitive to RGD-containing peptides, suggesting that the trans-membrane adhesion molecules differ from animal integrins. The pattern of plasma membrane-cell wall adhesion varied in different zones along hyphae. with broad, irregular connections in the extreme apex, uniform and continuous connection in a transition zone, end small, punctate adhesions in the mature subapical zone, suggesting differential functions in these different regions. The apical adhesions are important in tip growth, as diverse inhibitors induced concomitant changes in hyphal growth and the adhesions in the apical and transition zones. Plasmolysis also induced cytoplasmic migrations throughout hyphae. Such migrations were dominated by the central cytoplasm, and produced distorted organelles which spanned central and peripheral cytoplasm, thus supporting the idea that the adhesions in mature zones of hyphae anchor the peripheral cytoplasm and facilitate cytoplasmic and organelle migrations. [References: 69]
机译：卵菌的腐烂的腐烂的腐殖质和双歧and虫的菌丝，以及子囊孢子菌的神经孢子在缩回的细胞质和质膜与细胞壁的点状粘附之间产生大量的细胞质链。这些链在整个成熟菌丝的整个长度上形成，并且是菌丝中赫希特链的首次展示。与多种植物细胞中的相似链相反，腐殖质中的链缺乏内质网，但含有F-肌动蛋白，表明它们在动物细胞中的粘附位点和焦点接触之间具有相似性。然而，链对壁的粘附对含RGD的肽不敏感，这表明跨膜粘附分子与动物整联蛋白不同。质膜-细胞壁粘附的模式在沿菌丝的不同区域变化。在极尖处具有宽阔，不规则的连接，在过渡区具有均匀而连续的连接，在成熟的根尖下带末端小，点状粘连，提示这些不同区域的功能不同。根尖的黏附在尖端生长中很重要，因为各种抑制剂会引起菌丝生长以及根尖和过渡区的黏附伴随变化。溶血还诱导了整个菌丝的细胞质迁移。此类迁移以中央细胞质为主，并产生扭曲的细胞器，该细胞器跨越中央和外周细胞质，从而支持了在菌丝成熟区的粘着锚定外周细胞质并促进细胞质和细胞器迁移的观点。 [参考：69]

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