Solanum palinacanthum : broad‐spectrum resistance to root‐knot nematodes (Meloidogyne spp.)
Solanum palinacanthum : broad‐spectrum resistance to root‐knot nematodes (Meloidogyne spp.)
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Solanum palinacanthum ：对根结线虫（根结线虫属）具有广谱抗性
DOI：
10.1002/ps.5942
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发表时间：
2020
影响因子：
4.1
通讯作者：
Shinmura Yoshimi
中科院分区：
文献类型：
--
作者：
Murata Gaku;Uesugi Kenta;Uehara Taketo;Kumaishi Kie;Ichihashi Yasunori;Saito Takeo;Shinmura Yoshimi
根结线虫（RKN，Meloidogynespp.）是一种重要的植食性害虫。一些RKN物种正在成为世界性的问题，因为它们对RKN耐药的Solpudi物种具有毒力。一个新的Solpenta物种对Meloidogynespp具有广谱抗性。这是有效管理这种害虫所必需的。在此，我们试图确定RKN对Solanum palinacanthum的寄主适应性，并评估其在RKN管理中的潜在有效性。palinacanthum，通过筛选Solpenti材料。我们测试了它对常见的Meloidogynespp的抗性谱。在日本在盆栽试验中接种第二阶段的幼虫，S。palinacanthum对南方根结线虫Melidogyne incognita、南方根结线虫M. arenariagenotypes A2-J和A2-O，M. javanica和M. hapla，表明对RKN的广谱抗性。M. incognitawithinS. palinacanthumroots显著差于aeratibleS. melongenaandS.番茄接种后10和21天。微区试验证实，第二阶段的青少年的数量在地块，其中S。palinacanthumgrow和根系的根瘿显著低于aeratibleS。表明该抗性可用于田间条件下RKN的治理。palinacanthum对所有Meloidogynespp的寄主适应性较差。因此，它有可能被用作具有广谱RKN抗性的遗传资源，并且它可以有效地对抗田间的多种RKN物种。© 2020化学工业学会
BACKGROUNDRoot‐knot nematodes (RKN,Meloidogynespp.) are harmful phytophagous pests ofSolanumspp. Some RKN species are becoming worldwide problems because of their virulence to RKN‐resistantSolanumspecies. A newSolanumspecies carrying broad‐spectrum resistance toMeloidogynespp. is required for the effective management of this pest. Here we sought to determine the host suitability of RKN toSolanum palinacanthum, a wildSolanumspecies, and to evaluate its potential effectiveness in RKN management.RESULTSWe identified an RKN‐resistantSolanumspecies,S. palinacanthum, by screeningSolanumaccessions. We tested its spectrum of resistance to commonMeloidogynespp. in Japan. In pot tests inoculated with second‐stage juveniles,S. palinacanthumshowed poor host suitability forMelidogyne incognita,M. arenariagenotypes A2‐J and A2‐O,M. javanicaandM. hapla, indicating broad‐spectrum resistance to RKN. The development ofM. incognitawithinS. palinacanthumroots was significantly poorer than that in susceptibleS. melongenaandS. lycopersicumat 10 and 21 days after inoculation. Microplot tests confirmed that the number of second‐stage juveniles in plots whereS. palinacanthumgrew and root galling of the root system were significantly lower than those of susceptibleS. melongena, suggesting that the resistance could be used to manage RKN under field conditions.CONCLUSIONS. palinacanthumshowed poor host suitability to allMeloidogynespp. tested in this study, and it thus has the potential to be used as a genetic resource with broad‐spectrum RKN resistance, and it could be effective against multiple RKN species in a field. © 2020 Society of Chemical Industry