Exploiting crop genotype-specific root-soil interactions to enhance agronomic efficiency
Exploiting crop genotype-specific root-soil interactions to enhance agronomic efficiency
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DOI：
10.3389/fsoil.2023.1125604
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发表时间：
2023-03
期刊：
影响因子：
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通讯作者：
E. Baggs;Jill E. Cairns;B. Mhlanga;C. Petroli;Jordan Chamberlin;Hannes Karwat;V. Kommerell;C. Thierfelder;Eric Paterson;Manje Gowda
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作者：
E. Baggs;Jill E. Cairns;B. Mhlanga;C. Petroli;Jordan Chamberlin;Hannes Karwat;V. Kommerell;C. Thierfelder;Eric Paterson;Manje Gowda
土壤退化和气候变化的挑战对世界许多地区的粮食安全构成重大威胁，需要采取新的办法，通过提高农艺效率来缩小产量和营养差距。结合使用矿物肥料，有机投入，改良种质和通过改良农艺使这些做法适应当地情况，可以提高效率，同时建立土壤有机质（SOM）的库存。在这个框架内，最近的注意力已经转向植物-土壤相互作用的性质，以增加响应矿物肥料的投入，通过利用营养物质从SOM补充通过管理。这种利用已被证明在大麦和玉米中随基因型而变化，并与根沉积相关的根生理性状有关。与根际沉积相关的候选基因的鉴定使其更接近可持续性育种的可能性。在这里，我们讨论了这种潜力和可行性的背景下，玉米种植系统，并探讨了潜在的组合方法，优化利用SOM养分与增强生物硝化抑制，以进一步提高农艺效率。
Challenges of soil degradation and changing climate pose major threats to food security in many parts of the world, and new approaches are required to close yield and nutrition gaps through enhanced agronomic efficiency. Combined use of mineral fertilizers, organic inputs, improved germplasm and adaptation of these practices to local contexts through improved agronomy can promote efficiency whilst building stocks of soil organic matter (SOM). Within this framework, recent attention has turned to the nature of plant-soil interactions to increase response to mineral fertilizer inputs through utilisation of nutrients from SOM that are replenished through management. This utilisation has been shown in barley and maize to vary with genotype and to be related to root physiological traits associated with rhizodeposition. The identification of candidate genes associated with rhizodeposition takes this a step closer towards the possibility of breeding for sustainability. Here we discuss this potential and feasibility in the context of maize cropping systems, and explore the potential for a combined approach that optimises utilisation of SOM nutrients together with enhanced biological nitrification inhibition to further improve agronomic efficiency.