How plants sense wounds: damaged-self recognition is based on plant-derived elicitors and induces octadecanoid signaling.
How plants sense wounds: damaged-self recognition is based on plant-derived elicitors and induces octadecanoid signaling.
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DOI：
10.1371/journal.pone.0030537
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发表时间：
2012
期刊：
影响因子：
3.7
通讯作者：
Herrera-Estrella L
中科院分区：
文献类型：
--
作者：
Heil M;Ibarra-Laclette E;Adame-Álvarez RM;Martínez O;Ramirez-Chávez E;Molina-Torres J;Herrera-Estrella L
动物源的诱导子可以被植物用来检测植食性，但它们仅在特定的昆虫-植物相互作用中起作用。植物一般如何感知食草动物造成的损害？当植物感知到损伤的分子信号时，就会发生损伤的自我识别：降解的植物分子或位于其原始隔室之外的分子。火焰伤害或施加叶提取物或蔗糖或ATP溶液轻微受伤的利马豆（Phaseolus lunatus）叶片诱导花外花蜜分泌，间接防御机制。不会从受损植物细胞中高浓度释放的化学相关分子（葡萄糖、果糖、盐和山梨醇）没有引起可检测的反应，排除渗透压休克作为替代解释。诱导花外花蜜分泌的处理也提高了防御激素茉莉酸（JA）的内源浓度。机械损伤利马豆、拟南芥、玉米、草莓、芝麻和番茄叶片也能诱导内源JA。在利马豆，番茄和芝麻，叶提取物的应用进一步增加内源JA含量，表明受损的自我识别是分类广泛分布。用利马豆的非靶向454焦磷酸测序响应于火焰创伤或叶提取物或JA的应用而获得的转录组学模式彼此高度相似，但不同于仅对机械损伤的响应。我们的结论是，受损的自我信号的量或浓度可以定量地确定伤口反应的强度，并且完整的受损的自我反应需要破坏许多细胞。许多化合物在不同的植物物种中作为JA诱导激发子发挥作用。它们中的大多数是、包含或释放植物来源的分子基序。受损的自我识别代表了一种分类学上广泛存在的机制，有助于植物对食草动物的感知。这种策略是独立的昆虫衍生的激发子，因此，允许植物保持进化控制它们与食草动物的相互作用。
Animal-derived elicitors can be used by plants to detect herbivory but they function only in specific insect–plant interactions. How can plants generally perceive damage caused by herbivores? Damaged-self recognition occurs when plants perceive molecular signals of damage: degraded plant molecules or molecules localized outside their original compartment. Flame wounding or applying leaf extract or solutions of sucrose or ATP to slightly wounded lima bean (Phaseolus lunatus) leaves induced the secretion of extrafloral nectar, an indirect defense mechanism. Chemically related molecules that would not be released in high concentrations from damaged plant cells (glucose, fructose, salt, and sorbitol) did not elicit a detectable response, excluding osmotic shock as an alternative explanation. Treatments inducing extrafloral nectar secretion also enhanced endogenous concentrations of the defense hormone jasmonic acid (JA). Endogenous JA was also induced by mechanically damaging leaves of lima bean, Arabidopsis, maize, strawberry, sesame and tomato. In lima bean, tomato and sesame, the application of leaf extract further increased endogenous JA content, indicating that damaged-self recognition is taxonomically widely distributed. Transcriptomic patterns obtained with untargeted 454 pyrosequencing of lima bean in response to flame wounding or the application of leaf extract or JA were highly similar to each other, but differed from the response to mere mechanical damage. We conclude that the amount or concentration of damaged-self signals can quantitatively determine the intensity of the wound response and that the full damaged-self response requires the disruption of many cells. Numerous compounds function as JA-inducing elicitors in different plant species. Most of them are, contain, or release, plant-derived molecular motifs. Damaged-self recognition represents a taxonomically widespread mechanism that contributes to the perception of herbivore feeding by plants. This strategy is independent of insect-derived elicitors and, therefore, allows plants to maintain evolutionary control over their interaction with herbivores.
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影响因子：
7.4
作者：
Katari, Manpreet S.;Nowicki, Steve D.;Gutierrez, Rodrigo A.
通讯作者：
Gutierrez, Rodrigo A.
影响因子：
2.9
作者：
Bonaventure, Gustavo;Baldwin, Ian T.
通讯作者：
Baldwin, Ian T.
影响因子：
6.4
作者：
Coker, JS;Vian, A;Davies, E
通讯作者：
Davies, E
DOI：
10.1093/dnares/4.3.231
发表时间：
1997-06-30
期刊：
DNA research : an international journal for rapid publication of reports on genes and genomes
影响因子：
--
作者：
Franco, G R;Rabelo, E M;Pena, S D
通讯作者：
Pena, S D
影响因子：
56.9
作者：
GREEN, TR;RYAN, CA
通讯作者：
RYAN, CA