SURFACE CHARACTERISTICS OF ROOT AND HAUSTORIAL HAIRS OF PARASITIC SCROPHULARIACEAE
SURFACE CHARACTERISTICS OF ROOT AND HAUSTORIAL HAIRS OF PARASITIC SCROPHULARIACEAE
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DOI：
10.1086/337501
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发表时间：
1985-01-01
影响因子：
--
通讯作者：
RIOPEL, JL
中科院分区：
文献类型：
--
作者：
BAIRD, WV;RIOPEL, JL
7 种根部毛和吸器毛的外壁表面。用扫描电子显微镜检查寄生玄参科的[Agalinis filifolia、A. linifolia、A. obtusifolia、Aureolaria flava、Buchnera americana、Castilleja coccinea 和Orthocarpus purpurascens]。非吸器根毛的表面比较光滑，没有细胞外涂层物质；吸器毛的表面涂有细胞外基质，其外观呈颗粒状或乳头状。与非附着吸器的吸器毛相比，附着吸器的吸器毛显示出涂层材料的量增加。直接参与宿主附着的吸器毛具有最大量的涂层材料。在寄生虫和寄主之间的附着界面处，涂层材料形成连续的片材，从而通过增加有效接触面积来增强寄主根部的粘附力。
The outer wall surfaces of root and haustorial hairs in 7 spp. [Agalinis filifolia, A. linifolia, A. obtusifolia, Aureolaria flava, Buchnera americana, Castilleja coccinea and Orthocarpus purpurascens] of parasitic Scrophulariceae were examined with scanning electron microscopy. The surface of nonhaustorial root hairs is comparatively smooth and free of extracellular coating material; that of haustorial hairs is coated with an extracellular matrix, which has a granular or papillate appearance. Haustorial hairs of attached haustoria show an increased amount of the coating material over that observed for haustorial hairs of nonattached haustoria. Haustorial hairs directly involved in host attachment have the greatest amount of coating material. At the attachment interface between parasite and host, the coating material forms a continuous sheet, thereby enhancing adhesion of the austorium to the host root by increasing the effective area of contact.