DESTRUCTION OF NEMATODES BY SPECIES OF PLEUROTUS
DESTRUCTION OF NEMATODES BY SPECIES OF PLEUROTUS
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DOI：
10.1139/b87-103
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发表时间：
1987-04-01
期刊：
影响因子：
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通讯作者：
THORN, RG
中科院分区：
文献类型：
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作者：
BARRON, GL;THORN, RG
在水琼脂上，平菇从微小的匙形分泌细胞中产生微小的毒素滴。线虫接触这些液滴时会表现出突然而剧烈的反应。头部明显收缩，伴有食管移位和（或）食管周围组织破坏。在短短30秒内，通常在几分钟内，线虫变得或多或少固定，但没有被杀死。在固定宿主渗漏产物的刺激下，定向菌丝聚集在线虫体孔上。这些菌丝穿透一个或多个身体孔窍，定居并消化宿主。糙毛侧耳（P. strigosus）、近方侧耳（P. subareolatus）和羊角侧耳（P. cornucopiae）也有类似的行为。在马铃薯葡萄糖琼脂上，囊状假单胞菌产生大量分泌细胞，但毒素的效力要弱得多。在水琼脂上，糙皮侧耳定向菌丝也能被微小的菌落吸引，这些菌落被侵入并明显被消化。
On water agar, Pleurotus ostreatus produces tiny droplets of toxin from minute spathulate secretory cells. Nematodes touching such droplets show a sudden and dramatic response. The head region shinks considerably; this is acompanied by displacement of the oesophagus and (or) disruption of the tissues surrounding the oesophagus. In as little as 30 s, and usually within several minutes, the nematode becames more or less immobilized but is not killed. Stimulated by leakage products from the immobilized host, directional hyphae converge on the body orifices of the nematode. These hyphae penetrate one or more body orifices ad colonize and digest the host. Pleurotus strigosus, P. subareolatus, and P. cornucopiae behave in a similar way. On potato dextrose agar, P. cystidiosus produces numerous secretory cells, but the toxin is much less potent. On water agar directional hyphae of Pleurotus ostreatus can also be attracted to minute bacterial colonies, which are invaded and apparently digested.