Saavedra Teresa, Pestana Maribela, Costa João, Gonçalves Paula, Fangueiro David, Da Silva José Paulo, Correia Pedro José
MED-Mediterranean Institute for Agriculture, Environment and Development & CHANGE-Global Change and Sustainability Institute, Faculty of Science and Technology, Building 8, Universidade do Algarve, Campus of Gambelas, 8005-139 Faro, Portugal.
Centre of Marine Sciences (CCMAR/CIMAR LA), Universidade do Algarve, Campus of Gambelas, 8005-139 Faro, Portugal.
Plants (Basel). 2025 Jul 17;14(14):2215. doi: 10.3390/plants14142215.
This study aimed to evaluate the impact of intercropping . with three perennial grasses ( L., L., and L.) under varying levels of iron (Fe) availability (Fe0, Fe1 and Fe5) in nutrient solutions. The research focused on biomass accumulation, photosynthetic efficiency, root development, nutrient uptake, and oxidative stress response. In the absence of Fe, sp. exhibited chlorosis, reduced biomass, and increased ferric chelate reductase (FCR) enzyme activity as an adaptive response. plants intercropped with sp. maintained higher chlorophyll (Chl) levels and photosystem II efficiency (F/F values), mitigating Fe deficiency effects. Catalase activity and polyphenol production varied with intercropping species, indicating differential stress response mechanisms. Intercropping improved Zn, Mn, and P accumulation, with sp. facilitating greater Zn and Mn uptake. Intercropping sp. with specific grass species offers potential agronomic benefits by improving Fe use efficiency, mitigating stress, and enhancing nutrient uptake. Future research should focus on optimizing intercropping combinations for sustainable agricultural practices.
本研究旨在评估在营养液中不同铁（Fe）有效性水平（Fe0、Fe1和Fe5）下，与三种多年生禾本科植物（黑麦草、鸭茅和羊茅）间作的影响。该研究聚焦于生物量积累、光合效率、根系发育、养分吸收以及氧化应激反应。在缺铁条件下，黑麦草表现出黄化、生物量减少，且作为一种适应性反应，其三价铁螯合物还原酶（FCR）酶活性增加。与黑麦草间作的植物维持了较高的叶绿素（Chl）水平和光系统II效率（F/F值），减轻了缺铁影响。过氧化氢酶活性和多酚产量随间作物种而异，表明存在不同的应激反应机制。间作提高了锌、锰和磷的积累，黑麦草促进了更多的锌和锰吸收。将黑麦草与特定禾本科物种间作通过提高铁利用效率、减轻胁迫和增强养分吸收，提供了潜在的农艺效益。未来的研究应聚焦于优化间作组合以实现可持续农业实践。
