Light-induced systemic resistance in tomato plants against root-knot nematode Meloidogyne incognita
Light-induced systemic resistance in tomato plants against root-knot nematode Meloidogyne incognita
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光诱导番茄植株对根结线虫南方根结线虫的系统抗性
DOI：
10.1007/s10725-014-9986-9
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发表时间：
2015-06
影响因子：
4.2
通讯作者：
Yu, Jing-Quan
中科院分区：
文献类型：
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作者：
Xia, Xiao-Jian;Shi, Kai;Zhou, Yan-Hong;Yu, Jing-Quan
植物的免疫和防御反应被认为是由光谱的质量所激发的。为了确定空气光质量是否能改变番茄植株对根虫的抗性，本研究以接种南方根结线虫的番茄植株为材料，在夜间以20µmol.m−2和S−1的紫光、蓝光、绿光、黄光和红光照射番茄植株，连续4周观察番茄植株体内线虫数量、植株生长和防御反应。在所研究的光照处理中，只有夜间红光处理减少了根部线虫的数量；这与蛋白酶抑制蛋白1基因的表达增加7.9倍，病程相关类1(PR1)基因的转录增加17.4倍，以及根中水杨酸(SA)含量增加25.4%有关。此外，夜间R光处理显著恢复了线虫诱导的光饱和CO2同化率和植株鲜重的下降，而其他光处理没有类似的效果。这些结果表明，夜间R光诱导番茄植株对根结线虫产生系统抗性，这种抗性部分依赖于茉莉酸和水杨酸的防御途径。我们的研究还表明，夜间暴露在R光下可能是控制番茄线虫侵染的一种潜在方法，这在温室生产中尤其可行。
Plant immunity and defense responses are putatively stimulated by the quality of light spectra. To determine whether aerial light quality can modify the resistance of tomato plants to root pests, in this study, tomato plants inoculated with Meloidogyne incognita were exposed to purple, blue, green, yellow and red light from light-emitting photodiodes at 20 µmol m−2 s−1 photosynthetic photon flux density at the level of the canopy during night for 4 weeks and the number of nematode galls (incidence), plant growth, and defense responses were investigated. Among the studied light treatments, only the nightly red (R) light treatment reduced the number of nematode galls in the roots; this was associated with a 7.9-fold increase in the expression of PROTEINASE INHIBITOR PROTEIN 1 gene, a 17.4-fold increase in the transcript of PATHOGENESIS-RELATED CLASS 1 (PR1) gene, and a 25.4 % increase in the salicylic acid (SA) content in the roots. Furthermore, nightly R light treatment significantly recovered nematode-induced decreases in the light saturated rate of CO2 assimilation and plant fresh weight; however, the other light treatments did not have similar effects. These results indicate that the exposure of the shoot to R light at night induces systemic resistance in tomato plants against root knot nematodes in the roots, which is partly dependent on the jasmonic acid and SA defence pathways. Our study also suggests that exposure to R light at night could be a potential approach to control the nematode infestation in tomato which is particularly feasible for greenhouse production.
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DOI：
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发表时间：
2013
期刊：
Journal of Biology, Agriculture and Healthcare
影响因子：
--
作者：
Shamaael S. Mutar;F. Fattah
通讯作者：
Shamaael S. Mutar;F. Fattah
影响因子：
56.9
作者：
DELANEY, TP;UKNES, S;RYALS, J
通讯作者：
RYALS, J
影响因子：
1.9
作者：
T. Thurau;W. Ye;Jan Menkhaus;K. Knecht;Guixiang Tang;D. Cai
通讯作者：
T. Thurau;W. Ye;Jan Menkhaus;K. Knecht;Guixiang Tang;D. Cai
DOI：
--
发表时间：
--
期刊：
--
影响因子：
--
作者：
K. Livak;Thomas D. Schmittgen
通讯作者：
K. Livak;Thomas D. Schmittgen
影响因子：
4.9
作者：
Frechilla, S;Talbott, LD;Zeiger, E
通讯作者：
Zeiger, E