Effect of Sinorhizobium fredii strain Sneb183 on the biological control of soybean cyst nematode in soybean
Effect of Sinorhizobium fredii strain Sneb183 on the biological control of soybean cyst nematode in soybean
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DOI：
10.1002/jobm.201301014
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发表时间：
2014-11
影响因子：
3.1
通讯作者：
F. Tian;Yuanyuan Wang;Xiaofeng Zhu;Lijie Chen;Y. Duan
中科院分区：
文献类型：
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作者：
F. Tian;Yuanyuan Wang;Xiaofeng Zhu;Lijie Chen;Y. Duan
大豆胞囊线虫（Heterodera glycines，SCN）是危害大豆生产的主要病害。已知内生细菌费氏中华根瘤菌菌株Sneb183抑制SCN的活性。以大豆幼苗为材料，研究了Sneb183对大豆幼苗根内的侵染及其发育情况。还检查了大豆根中孢囊的数量。还通过分根系统检查了大豆中诱导的系统抗性。我们的研究结果表明，由于Sneb183接种，幼虫和孢囊的数量显着减少。Sneb183还将根中SCN的发育期从对照的27天延长到30天。此外，Sneb183处理的植物中每个阶段的线虫数量低于对照植物。我们还使用了分裂根系统来证明S。fredii菌株Sneb183诱导了大豆对SCN侵染的系统抗性。SCN穿透抑制率为38.75%。我们的研究表明Sneb183可以作为一种有效的生物防治剂来管理大豆SCN侵染。
The soybean cyst nematode (SCN; Heterodera glycines) is a major detriment to soybean production. The endophytic bacterium Sinorhizobium fredii strain Sneb183 is known to inhibit the activity of SCN. In the present study, soybean seedlings were inoculated with Sneb183, to study the penetration juveniles, and their development inside the roots. The number of cysts in the soybean roots was also examined. The induced systemic resistance in soybean was also examined through the split‐root system. Our results revealed that the number of juveniles and cysts significantly decreased as a result of Sneb183 inoculation. Sneb183 also prolonged the developmental stage of SCN in the root to 30 days as compared to 27 days in the control. Furthermore, the number of nematodes in each stage was lower in the Sneb183 treated plants than control plants. We also used a split‐root system to show that the S. fredii strain Sneb183 induced a systemic resistance to SCN infection in soybean. The repression rate of SCN penetration was 38.75%. Our study showed that Sneb183 can be an effective biocontrol agent for managing SCN infestation in soybean.