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Differential response of Meloidogyne, Pratylenchus, Globodera, and Xiphenema species to the nematicide fluazaindolizine.
Phytopathology ( IF 2.6 ) Pub Date : 2020-11-03 , DOI: 10.1094/phyto-05-20-0189-r
Catherine L Wram 1 , Inga Zasada 2
Affiliation  

This research focused on the effects of fluazaindolizine on a diversity of plant-parasitic nematodes. In microwell assays, 24-h dose-response curves were generated for several species and populations of Meloidogyne, Pratylenchus neglectus, P. penetrans, Globodera ellingtonae, and Xiphinema americanum. In a greenhouse study, the impact of fluazaindolizine on fecundity of M. incognita, M. hapla, and M. chitwoodi was tested by exposing nematodes for 24 h in solution and inoculating on tomato. The average 24-h ED50s (dose that resulted in the immobility of 50% of exposed nematodes) for M. hapla, M. chitwoodi, and M. incognita were 325.7, 223.4, and 100.7 ppm, respectively. M. hapla had the most variation among populations, with 24-h ED50s ranging from 72 to 788 ppm. G. ellingtonae had the lowest 24-h ED50 at 30 ppm. Pratylenchus spp. were unaffected by fluazaindolizine. X. americanum was the only species where effects of fluazaindolizine were reversible, but had a 24-h ED50 that fell in the range of the Meloidogyne spp. In the greenhouse study, M. chitwoodi was the least sensitive with reproduction reaching 62% of the untreated control after a pre-exposure to 47 ppm, whereas M. incognita and M. hapla at the same exposure dose had reproduction rates of 27 and 36% of the untreated control, respectively. Despite varying in in vitro responses to fluazaindolizine, reproduction of all Meloidogyne spp. was suppressed after only 24 h of exposure. This study expanded our understanding of how G. ellingtonae, P. thornei, P. penetrans, and X. americanum respond to fluazaindolizine.



中文翻译:

根结线虫fluazaindolizine的根结线虫,Pratylenchus,Globodera和Xiphenema菌种的差异反应。

这项研究集中于氟氮嗪对多种植物寄生线虫的影响。在微孔测定中,生成了几种物种和种群的根结线虫,Pratylenchus neglectus,P.penetrans,globodera ellingtonae和Xiphenema americanum的24小时剂量反应曲线。在温室研究中,通过将线虫暴露于溶液中24 h并接种在番茄上,测试了氟氮吲哚嗪对隐线虫,ha。hapla和chitwoodi繁殖力的影响。hapla支原体,chitwoodi和M. incognita的平均24小时ED50s(导致暴露的线虫不动的50%的剂量)分别为777.9 ppm,544.8 ppm和245.7 ppm。在人群中,Meloidogyne hapla的变异最大,其24小时ED50为175 ppm至1,900 ppm。globodera ellingtonae的24小时ED50最低,为74 ppm。Pratylenchus spp。不受氟氮吲嗪的影响。美国的Xiphenema是唯一可以逆转氟氮杂多嗪作用的物种,但其24小时ED50落在Meloidogyne物种的范围内。在温室研究中,在预暴露至115 ppm后,chitwoodi的敏感性最低,未处理对照组的繁殖达到62%,而在相同暴露剂量下的隐隐线虫和hapla的繁殖率分别为27%和90%。分别有36%的未处理对照组。尽管在体外对氟氮吲哚嗪的反应有所不同,但仅暴露24 h后,所有Meloidogyne物种的繁殖均受到抑制。这项研究拓宽了我们对灵芝假单胞菌,桑氏假单胞菌,百日草假单胞菌和美洲假单胞菌对氟氮嗪的反应的理解。美国的Xiphenema是唯一可以逆转氟氮嗪影响的物种,但其24小时ED50落在Meloidogyne物种的范围内。在温室研究中,在预暴露至115 ppm后,chitwoodi的敏感性最低,未处理对照组的繁殖达到62%,而在相同暴露剂量下的隐隐线虫和hapla的繁殖率分别为27%和90%。分别有36%的未处理对照组。尽管在体外对氟氮吲哚嗪的反应有所不同,但仅暴露24 h后,所有Meloidogyne物种的繁殖均受到抑制。这项研究拓宽了我们对灵芝假单胞菌,桑氏假单胞菌,百日草假单胞菌和美洲假单胞菌对氟氮嗪的反应的理解。美国的Xiphenema是唯一可以逆转氟氮嗪影响的物种,但其24小时ED50落在Meloidogyne物种的范围内。在温室研究中,预先暴露至115 ppm后,chitwoodi的敏感性最低,未处理对照的繁殖达到62%,而在相同暴露剂量下的隐叶隐孢子和hapla的繁殖率分别为27%和分别有36%的未处理对照组。尽管在体外对氟氮吲哚嗪的反应有所不同,但仅暴露24 h后,所有Meloidogyne物种的繁殖均受到抑制。这项研究拓宽了我们对灵芝假单胞菌,桑氏假单胞菌,百日草假单胞菌和美洲假单胞菌对氟氮嗪的反应的理解。但其24小时ED50落在Meloidogyne物种的范围内。在温室研究中,在预暴露至115 ppm后,chitwoodi的敏感性最低,未处理对照组的繁殖达到62%,而在相同暴露剂量下的隐隐线虫和hapla的繁殖率分别为27%和90%。分别有36%的未处理对照组。尽管在体外对氟氮吲哚嗪的反应有所不同,但仅暴露24 h后,所有Meloidogyne物种的繁殖均受到抑制。这项研究拓宽了我们对灵芝假单胞菌,桑氏假单胞菌,百日草假单胞菌和美洲假单胞菌对氟氮嗪的反应的理解。但其24小时ED50落在Meloidogyne物种的范围内。在温室研究中,在预暴露至115 ppm后,chitwoodi的敏感性最低,未处理对照组的繁殖达到62%,而在相同暴露剂量下的隐隐线虫和hapla的繁殖率分别为27%和90%。分别有36%的未处理对照组。尽管在体外对氟氮吲哚嗪的反应有所不同,但仅暴露24 h后,所有Meloidogyne物种的繁殖均受到抑制。这项研究拓宽了我们对灵芝假单胞菌,桑氏假单胞菌,百日草假单胞菌和美洲假单胞菌对氟氮嗪的反应的理解。在相同的暴露剂量下,hapla的繁殖率分别为未处理对照的27%和36%。尽管在体外对氟氮吲哚嗪的反应有所不同,但仅暴露24 h后,所有Meloidogyne物种的繁殖均受到抑制。这项研究拓宽了我们对灵芝假单胞菌,桑氏假单胞菌,百日草假单胞菌和美洲假单胞菌对氟氮嗪的反应的理解。在相同的暴露剂量下,hapla的繁殖率分别为未处理对照的27%和36%。尽管在体外对氟氮吲哚嗪的反应有所不同,但仅暴露24 h后,所有Meloidogyne物种的繁殖均受到抑制。这项研究拓宽了我们对灵芝假单胞菌,桑氏假单胞菌,百灵草假单胞菌和美洲假单胞菌对fluazaindolizine的反应的认识。
更新日期:2020-12-05
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