Understanding and engineering beneficial plant-microbe interactions: plant growth promotion in energy crops.

Understanding and engineering beneficial plant-microbe interactions: plant growth promotion in energy crops.
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DOI:
10.1111/pbi.12279
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发表时间:
2014-12
影响因子:
13.8
通讯作者:
Cope-Selby N
Cope-Selby N
中科院分区:
工程技术1区
文献类型:
--
作者:
Farrar K;Bryant D;Cope-Selby N

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必须优化全球植物生产系统,以便在不断变化的气候条件下,在有限的土地上生产稳定的高产作物。随着人口增长、城市化和富裕,对食品、动物饲料以及用于生物能源和生物精炼应用的原料的需求正在增加。需要低投入、可持续的替代石化衍生化肥和杀虫剂,以降低投入成本并维持或提高产量,潜在的生物解决方案可以发挥重要作用。与为食用而培育的作物不同,许多生物能源作物在很大程度上是未被驯化的,因此有机会利用有益的植物-微生物关系,这些关系可能在密集的作物育种中无意中失去了。植物-微生物的相互作用跨越了一种广泛的关系,其中一种或两种生物可能对另一方产生有益的、中性的或负面的影响。一些相对较少的有益植物-微生物相互作用已经被很好地理解和利用;然而,其他的仍然没有得到充分的研究,是优化植物生产的一个未开发的储藏库。近期可能会使用细菌菌株作为微生物生物杀虫剂和生物肥料,以提高在不适合粮食生产的土地上种植的能源作物的生物质产量。更长期的目标包括在宿主和微生物内部和之间设计合成遗传电路,以优化植物生产。一个非常令人兴奋的前景是,内共生菌包含了一种独特的资源,降低了微生物基因组的复杂性,具有非常令人感兴趣的适应特性,可用于广泛的应用。
Plant production systems globally must be optimized to produce stable high yields from limited land under changing and variable climates. Demands for food, animal feed, and feedstocks for bioenergy and biorefining applications, are increasing with population growth, urbanization and affluence. Low-input, sustainable, alternatives to petrochemical-derived fertilizers and pesticides are required to reduce input costs and maintain or increase yields, with potential biological solutions having an important role to play. In contrast to crops that have been bred for food, many bioenergy crops are largely undomesticated, and so there is an opportunity to harness beneficial plant–microbe relationships which may have been inadvertently lost through intensive crop breeding. Plant–microbe interactions span a wide range of relationships in which one or both of the organisms may have a beneficial, neutral or negative effect on the other partner. A relatively small number of beneficial plant–microbe interactions are well understood and already exploited; however, others remain understudied and represent an untapped reservoir for optimizing plant production. There may be near-term applications for bacterial strains as microbial biopesticides and biofertilizers to increase biomass yield from energy crops grown on land unsuitable for food production. Longer term aims involve the design of synthetic genetic circuits within and between the host and microbes to optimize plant production. A highly exciting prospect is that endosymbionts comprise a unique resource of reduced complexity microbial genomes with adaptive traits of great interest for a wide variety of applications.
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