Vargas-Hernandez Marcela, Macias-Bobadilla Israel, Guevara-Gonzalez Ramon G, Romero-Gomez Sergio de J, Rico-Garcia Enrique, Ocampo-Velazquez Rosalia V, Alvarez-Arquieta Luz de L, Torres-Pacheco Irineo
Laboratory of Biosystems Engineering, Autonomous University of Queretaro, Faculty of Engineering, Campus Amazcala, Queretaro, Mexico.
Laboratory of Microbiology, Autonomous University of Queretaro, Faculty of Chemistry, C.U. Cerro de las Campanas, Queretaro, Mexico.
Front Plant Sci. 2017 Oct 13;8:1762. doi: 10.3389/fpls.2017.01762. eCollection 2017.
Over time plants developed complex mechanisms in order to adapt themselves to the environment. Plant innate immunity is one of the most important mechanisms for the environmental adaptation. A myriad of secondary metabolites with nutraceutical features are produced by the plant immune system in order to get adaptation to new environments that provoke stress (stressors). Hormesis is a phenomenon by which a stressor (i.e., toxins, herbicides, etc.) stimulates the cellular stress response, including secondary metabolites production, in order to help organisms to establish adaptive responses. Hormetins of biotic origin (i.e., biostimulants or biological control compounds), in certain doses might enhance plant performance, however, in excessive doses they are commonly deleterious. Biostimulants or biological control compounds of biotic origin are called "elicitors" that have widely been studied as inducers of plant tolerance to biotic and abiotic stresses. The plant response toward elicitors is reminiscent of hormetic responses toward toxins in several organisms. Thus, controlled management of hormetic responses in plants using these types of compounds is expected to be an important tool to increase nutraceutical quality of plant food and trying to minimize negative effects on yields. The aim of this review is to analyze the potential for agriculture that the use of biostimulants and biological control compounds of biotic origin could have in the management of the plant hormesis. The use of homolog DNA as biostimulant or biological control compound in crop production is also discussed.
随着时间的推移，植物发展出复杂的机制以适应环境。植物先天免疫是其适应环境的最重要机制之一。植物免疫系统会产生大量具有营养保健特性的次生代谢产物，以便适应引发压力的新环境（压力源）。毒物兴奋效应是一种现象，即压力源（如毒素、除草剂等）刺激细胞应激反应，包括次生代谢产物的产生，以帮助生物体建立适应性反应。生物源的激素原（如生物刺激剂或生物防治化合物），在一定剂量下可能会提高植物性能，然而，剂量过大时通常是有害的。生物源的生物刺激剂或生物防治化合物被称为“诱导子”，它们作为植物对生物和非生物胁迫耐受性的诱导剂已被广泛研究。植物对诱导子的反应类似于几种生物体对毒素的毒物兴奋效应反应。因此，利用这类化合物对植物的毒物兴奋效应进行可控管理，有望成为提高植物性食品营养保健品质以及尽量减少对产量负面影响的重要工具。本综述的目的是分析使用生物源生物刺激剂和生物防治化合物在植物毒物兴奋效应管理方面对农业的潜在作用。还讨论了使用同源DNA作为作物生产中的生物刺激剂或生物防治化合物的情况。
