a root-like attachment in parasitic plants that penetrates and obtains food from the host
In botany, a haustorium (plural haustoria) is the appendage or portion of a parasitic fungus (the hyphal tip) or of the root of a parasitic plant (such as the broomrape family or mistletoe) that penetrates the host's tissue and draws nutrients from it. Haustoria do not penetrate the host's cell membranes.
例句与用法
1.
The primary chalazal haustorium ramifies around the vascular tissues of the ovule . 初生合点吸器沿着胚珠的维管组织分支。
2.
A remarkable feature of the endosperm in some plants is the presence of haustoria . 某些植物胚乳的一个显著特点是具有吸器。
3.
The developments of haustorial mother cells and haustoria were retarded , malformed , and necrotized 吸器母细胞和吸器发育受阻，畸形，坏死。
4.
From its undersurface a narrow infection hypha or penetration tube pushes through the cell wall or intercellular spaces and develops into a series of hyphae or a haustorium 从下表面的较细的感染性的菌丝可以穿过细胞壁而发育为一系列菌丝。
5.
Haustorium ( pl . haustoria ) a specialized outgrowth of many parasitic fungi and certain parasitic plants such as dodder ( cuscuta ) and broomrape ( orobanche ) , that penetrates into and withdraws food material from the cells of the host plant 吸器：是某些寄生真菌和某些寄生植物如菟丝子（菟丝子属）和肉苁蓉（列当属）所长出的特化结构，它可以刺入寄主植物体内并从寄主细胞中吸取营养物质。
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