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Arbuscular mycorrhizal fungi act as biostimulants in horticultural crops

机译:丛枝菌根真菌在园艺作物中起生物刺激剂的作用

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In the coming years, more sustainable horticultural practices should be developed to guarantee greater yield and yield stability, in order to meet the increasing food global demand. An environmentally-friendly way to achieve the former objectives is represented by the biostimulant functions displayed by arbuscular mycorrhizal fungi (AMF). AMF support plant nutrition by absorbing and translocating mineral nutrients beyond the depletion zones of plant rhizosphere (biofertilisers) and induce changes in secondary metabolism leading to improved nutraceutical compounds. In addition, AMF interfere with the phytohormone balance of host plants, thereby influencing plant development (bioregulators) and inducing tolerance to soil and environmental stresses (bioprotector). Maximum benefits from AMP activity will be achieved by adopting beneficial farming practices (e.g. reduction of chemical fertilisers and biocides), by inoculating efficient AMF strains and also by the appropriate selection of plant host/fungus combinations. This review gives an up to date overview of the recent advances in the production of quality AMP inocula and in the biostimulant properties of AMF on plant health, nutrition and quality of horticultural crops (fruit trees, vegetables, flower crops and ornamentals). The agronomical, physiological and biochemical processes conferring tolerance to drought, salinity, nutrient deficiency, heavy metal contaminations and adverse soil pH in mycorrhizal plants are encompassed. In addition, the influence of bacterial interactions and farm management on AMP is discussed. Finally, the review identifies several future research areas relevant to AMF to exploit and improve the biostimulant effects of AMF in horticulture. (C) 2015 Elsevier B.V. All rights reserved.
机译:在未来几年中,应开发出更具可持续性的园艺做法,以确保更高的产量和产量稳定性,以满足全球不断增长的粮食需求。丛枝菌根真菌(AMF)表现出的生物刺激功能代表了一种实现以前目标的环保方式。 AMF通过吸收和转移植物根际(生物肥料)枯竭区以外的矿物质养分来支持植物营养,并诱导次生代谢发生变化,从而改善营养品化合物。此外,AMF会干扰宿主植物的植物激素平衡,从而影响植物发育(生物调节剂)并诱导对土壤和环境胁迫的耐受性(生物保护剂)。通过采取有益的耕作方式(例如减少化学肥料和杀生物剂),接种有效的AMF菌株以及适当选择植物宿主/真菌组合,可以从AMP活动中获得最大的收益。这篇综述提供了关于优质AMP接种物生产以及AMF对植物健康,营养和园艺作物(果树,蔬菜,花卉作物和观赏植物)质量的生物刺激特性的最新进展的最新概述。涵盖了赋予菌根植物干旱,盐分,营养缺乏,重金属污染和不利的土壤pH耐受性的农艺,生理和生化过程。此外,还讨论了细菌相互作用和农场管理对AMP的影响。最后,本综述确定了与AMF相关的几个未来研究领域,以开发和改善AMF在园艺中的生物刺激作用。 (C)2015 Elsevier B.V.保留所有权利。

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