Tuiwong Patcharin, Cho Hui-Kyong, Rouached Hatem, Prom-U-Thai Chanakan
Agronomy Division, Department of Plant and Soil Sciences, Faculty of Agriculture, Chiang Mai University, Chiang Mai 50200, Thailand.
Department of Plant, Soil, and Microbial Sciences, Michigan State University, East Lansing, MI 48824, USA.
Plants (Basel). 2024 Nov 22;13(23):3274. doi: 10.3390/plants13233274.
The rising interest in foliar nutrient spraying as a strategy to boost crop yields has led to investigations of how such application influences nutrient uptake and accumulation, especially in edible plant parts. Despite its importance, the effects of single versus simultaneous nutrient application on plant absorption, transport, and accumulation have been underexplored. This study addresses this knowledge gap by examining the physiological and molecular responses of rice to foliar application of nitrogen (N) and zinc (Zn) individually and in combination at different growth stages. We assessed how the treatments affect rice grain yield and nutrient accumulation in relation to the expression of Zn transport-related genes. Foliar application of N+Zn+ at the tillering stage resulted in a 62.01% increase in grain yield compared to the control. Additionally, Zn concentrations in brown rice were increased by 26.04% and 34.20% when N0Zn+ and N+Zn+ treatments, respectively, were applied at panicle initiation. Gene expression analysis revealed that the timing and nutrient combination significantly influenced rice productivity and grain Zn concentration. At the tillering stage, the N+Zn+ treatment elevated the expression of Zn transporters such as , , and in leaves, thereby enhancing grain yield. At panicle initiation, the nutrient treatments influenced a broad range of genes, including , , , , , , and , affecting grain Zn and N accumulation. These insights are crucial for developing targeted nutrient management strategies to optimize rice yield and grain nutritional quality for the benefit of consumers.
将叶面喷施营养物质作为提高作物产量的一种策略，人们对其兴趣日益浓厚，这引发了对这种施肥方式如何影响养分吸收和积累的研究，尤其是在可食用植物部分。尽管其重要性，但单一施肥与同时施肥对植物吸收、运输和积累的影响尚未得到充分研究。本研究通过考察水稻在不同生长阶段单独和联合叶面喷施氮（N）和锌（Zn）的生理和分子反应，填补了这一知识空白。我们评估了这些处理如何影响水稻产量以及与锌转运相关基因表达有关的养分积累。与对照相比，分蘖期叶面喷施N+Zn+使籽粒产量提高了62.01%。此外，在幼穗分化期分别施用N0Zn+和N+Zn+处理时，糙米中的锌浓度分别提高了26.04%和34.20%。基因表达分析表明，施肥时间和养分组合显著影响水稻生产力和籽粒锌浓度。在分蘖期，N+Zn+处理提高了叶片中如、和等锌转运蛋白的表达，从而提高了籽粒产量。在幼穗分化期，养分处理影响了包括、、、、、和等广泛的基因，影响籽粒锌和氮的积累。这些见解对于制定有针对性的养分管理策略至关重要，以便优化水稻产量和籽粒营养品质，造福消费者。
