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首页> 外文期刊>Ecological engineering: The Journal of Ecotechnology >Plant beneficial rhizospheric microorganism (PBRM) strategies to improve nutrients use efficiency: A review
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Plant beneficial rhizospheric microorganism (PBRM) strategies to improve nutrients use efficiency: A review

机译：植物有益流散性微生物（PBRM）策略，提高营养素利用效率：综述

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摘要

Plant beneficial rhizospheric microorganisms (PBRMs) are rhizospheric microbes that are able to colonize rhizosphere and to improve plant growth, development and nutrient use efficiency (NUE) by means of a wide variety of mechanisms like organic matter mineralization, biological control against soil-borne pathogens, biological nitrogen (N) fixation, potassium (K), phosphorous (P) and zinc (Zn) solubilization and root growth promotion. Improved grain production to meet the food demand of an increasing population has been highly dependent on chemical fertilizer input based on the traditionally assumed notion of 'high input, high output', which results in overuse of fertilizers but ignores the biological potential of roots or rhizosphere for efficient mobilization and acquisition of soil nutrients. A very interesting feature of PBRMs is their ability of enhancing nutrient bioavailability or NUE by similar to 20-40% with various nutrients. Although chemical fertilization is a quick method, it is not recommendable economically and environmentally, especially if overused. Several PBRMs species have been characterized as biological N-fixer, P, K-solubilizing microorganisms while other species have been shown to increase the solubility of micronutrients, like those that produce siderophores for iron (Fe) chelation. The enhanced amount of soluble macro-and micronutrients in the close proximity of the soil-root interface has indeed a positive effect on plant nutrition. There is a growing body of evidence that demonstrates the potential of various microbes to enhance plant productivity and yield in cropping systems. However, the molecular mechanisms underlying these phenomena, the signals involved as well as the potential applications in a sustainable agriculture approach, and the biotechnological aspects for possible rhizosphere engineering are still matters of discussion. (C) 2017 Elsevier B.V. All rights reserved.
机译：植物有益流散的微生物（PBRM）是能够通过各种机制等种种有机质矿化，对土壤传播病原体的生物学控制来定植根际和改善植物生长，发育和营养利用效率（NUE）的根茎微生物。 ，生物氮（N）固定，钾（K），磷（P）和锌（Zn）溶解和根生长促进。改进的粮食生产以满足人口越来越多的粮食需求已经高度依赖于基于传统上假设的“高投入，高产量”的化肥输入，这导致过度使用肥料但忽略根或根际的生物潜力有效动员和收购土壤营养素。 PBRMS的一个非常有趣的特征是它们通过各种营养成分提高营养生物利用度或NUE的能力。虽然化学施肥是一种快速的方法，但它不太建议经济和环境，特别是如果过度使用。几种PBRMS物种已经表征为生物N-固定剂，P，K-溶解微生物，而其他物种已被证明以增加微量营养素的溶解度，例如产生铁（Fe）螯合剂的施工电池的抑制性。在土根界面紧密接近的可溶性宏观和微量营养素的增强量确实对植物营养产生了积极影响。越来越多的证据表明各种微生物的潜力，以提高植物生产力和种植系统中的产量。然而，这些现象的潜在的分子机制，所涉及的信号以及可持续农业方法中的潜在应用，以及可能的根际工程的生物技术方面仍然存在讨论。 （c）2017 Elsevier B.v.保留所有权利。

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