Endophyte‐enhanced resistance in perennial ryegrass to the bluegrass billbug, Sphenophorus parvulus
Endophyte‐enhanced resistance in perennial ryegrass to the bluegrass billbug, Sphenophorus parvulus
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DOI：
10.1111/j.1570-7458.1986.tb02164.x
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发表时间：
1986-05
影响因子：
1.9
通讯作者：
S. Ahmad;J. Johnson‐Cicalese;W. Dickson;C. R. Funk
中科院分区：
文献类型：
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作者：
S. Ahmad;J. Johnson‐Cicalese;W. Dickson;C. R. Funk
在多年生黑麦草，Lolium perenne L.，对早熟禾扁尾蚜、小楔尾蚜Gyllenhal的影响与内生真菌、枝顶孢属（AcremoniumloliaeLatch等）的存在有关。在1981年、1983年和1984年的两次不同的草坪评价田间试验中，发生了严重的扁尾蚜侵染。观察到品种反应的显著差异。随后的调查发现，抗扁虱的黑麦草条目具有非常高的内生菌感染水平;而易感条目几乎没有或没有内生菌感染。此外，发现抗性是母系传播的，并且其在母系中的显著流行可以通过内生菌的种子传播的高频率（超过95%）来解释。这种新认识的植物对几种害虫的抗性来源值得进一步研究。
Enhanced resistance in perennial ryegrass, Lolium perenne L., to the bluegrass billbug, Sphenophorus parvulus Gyllenhal is associated with the presence of a fungal endophyte, Acremonium loliae Latch et al. Severe billbug infestations occurred in 1981, 1983, and 1984 in two different turf evaluation field trials. Striking differences in cultivar response were observed. Subsequent investigations led to the discovery that billbug‐resistant ryegrass entries had very high levels of endophyte infection; whereas, susceptible entries had little or no endophyte infection. Further, the resistance was found to be maternally transmitted, and its dramatic prevalence within a maternal line was explained by the high frequency (over 95%) of seed transmission of the endophyte. This newly recognized source of plant resistance to several insect pests warrants additional study.