Prolonged exposure is required for communication in sagebrush
Prolonged exposure is required for communication in sagebrush
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山艾树中的交流需要长时间暴露
DOI：
10.1007/s11829-011-9180-1
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发表时间：
2012
影响因子：
1.6
通讯作者：
Satomi Ishizaki
中科院分区：
文献类型：
--
作者：
Kaori Shiojiri;Richard Karban;Satomi Ishizaki
挥发性通讯使植物能够协调系统诱导的对食草动物的抗性。这些线索的机制和性质仍然知之甚少。目前还不清楚植物如何区分可靠的线索和错误的信息。先前的实验中，修剪的山艾树树枝被装袋，暗示了线索的发出或保持活跃长达3天。我们进行了实验，使用塑料袋，以阻止排放的线索，在不同的时间后，实验剪辑。我们还从修剪和未修剪的分支收集顶空挥发物1 h，将这些挥发物转移到测定分支，并孵育测定1 h或6 h。我们发现，检测分支，收到挥发性线索小于1小时后，修剪邻居未能诱导电阻。测定分支收到挥发性线索超过1小时经历了整个赛季减少草食动物。树枝孵育6小时的挥发物，已收集在第一个小时后修剪显示诱导抗性。这些结果表明，山艾树必须接收线索的时间延长（>1小时），然后才作出反应，他们建议，持续时间的线索接收是一个重要的和被忽视的过程中的通信，使植物避免不可靠的，短暂的线索。
Volatile communication allows plants to coordinate systemic induced resistance against herbivores. The mechanisms responsible and nature of the cues remain poorly understood. It is unknown how plants distinguish between reliable cues and misinformation. Previous experiments in which clipped sagebrush branches were bagged suggested that cues are emitted or remain active for up to 3 days. We conducted experiments using plastic bags to block emission of cues at various times following experimental clipping. We also collected headspace volatiles from clipped and unclipped branches for 1 h, transferred those volatiles to assay branches, and incubated the assays for either 1 or 6 h. We found that assay branches that received volatile cues for less than 1 h following clipping of neighbors failed to induce resistance. Assay branches that received volatile cues for more than 1 h experienced reduced herbivory throughout the season. Branches incubated for 6 h with volatiles that had been collected during the first hour following clipping showed induced resistance. These results indicate that sagebrush must receive cues for an extended time (>1 h) before responding; they suggest that the duration of cue reception is an important and overlooked process in communication allowing plants to avoid unreliable, ephemeral cues.