Effect of the carmine spider mite (Acarida: Tetranychidae) infestation and mechanical injury on the level of ABA in tomato plants
Effect of the carmine spider mite (Acarida: Tetranychidae) infestation and mechanical injury on the level of ABA in tomato plants
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DOI：
10.1007/s11738-999-0045-5
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发表时间：
1999-01-01
影响因子：
2.6
通讯作者：
Kielkiewicz, M
中科院分区：
文献类型：
--
作者：
Gawronska, H;Kielkiewicz, M
研究了番茄叶螨侵染和机械伤害后番茄叶片脱落酸(ABA)含量的变化。还研究了是否发生了从胁迫到非胁迫器官的信号传递。CVS。对不同感病品种Romatos和SLonka在初花期分别进行CSM取食(72 H)和机械刺伤(18 H)胁迫。结果表明，在对照条件下，不同品种间ABA水平差异较大，感病品种的ABA水平始终较高。在对CSM摄食的反应中，耐受能力较强的植物(cv.SLonka)增加了95%，但敏感株仅增加了11%。在非胁迫条件下，投喂CSM的各器官中ABA含量均升高(SLonka cv.)机械伤后，直接损伤脏器中ABA含量增加，但幅度较小(49%)，仅在SLonka cv.该品种受害植株未受伤害的器官中ABA含量也是如此。在非应激器官中观察到的ABA水平变化可能是应激器官发出信号的结果。通过ABA水平的变化来衡量植物对CSM取食产生的胁迫的反应，比仅仅通过机械伤害来衡量要强得多。
The aim of this study was to determine the changes in the abscisic acid (ABA) content in tomato leaves infested by the carmine spider mite (CSM) (Tetranychus cinnabarinus Boidsuval) and in leaves that were mechanically injured. It was also investigated whether signalling from stressed to non-stressed organs occurred.Tomato plants (Lycopersicon esculentum Mill.) cvs. Romatos and Slonka (with various susceptibility to CSM) were stressed at the stage of first cluster flowering by either CSM feeding (72 hours) or by mechanical puncturing simulated feeding injury by CSM (18 hours).It was found that under control condition the level of ABA differed significantly between cultivars, being always higher in plants of the susceptible cv. Romatos.In response to CSM feeding, the content of ABA in infested organs of the more tolerant plant (cv. Slonka) increased by 95% but in the susceptible one by 11% only. ABA content in the organs non-stressed by CSM feeding either increased (Slonka cv.) or decreased (Romatos cv.).In response to mechanical wounding, ABA content in directly injured organs increased but to a lower degree (49%) and only in Slonka cv.. The same was true for ABA content in noninjured organs of damaged plants of this cultivar. Observed changes in ABA level in non-stressed organs are probably the results of signalling from stressed organs. Plant response measured by changes in ABA level to the stress generated by CSM feeding, was much stronger than merely by mechanical injury.