Forgione Ivano, Quattromano Ida, Regina Teresa Maria Rosaria, Salimonti Amelia, Carbone Fabrizio
Research Center for Olive, Fruit and Citrus Crops, Council for Agricultural Research and Economics (CREA), Via Settimio Severo 83, 87036 Rende, CS, Italy.
Department of Biology, Ecology and Earth Science, University of Calabria-Rende, 87036 Rende, CS, Italy.
Int J Mol Sci. 2025 Aug 27;26(17):8319. doi: 10.3390/ijms26178319.
Plants have the ability to perceive a wide range of light spectra, from which they derive not only the energy required for photosynthesis but also a variety of environmental cues and signals mediated by specific photoreceptors that trigger a cascade of biochemical reactions essential for their development. The olive tree ( L.) is a woody species for which, despite its agronomic and economic relevance, the influence of light on its development remains poorly understood. The present study, a combined approach was employed, involving the phenotyping of 10 different cultivars exposed exclusively to red light (RL) and blue light (BL) for a period of two months, in addition to the monitoring of expression profiles of 10 photoreceptor-encoding genes in two of the cultivars that exhibited the most contrasting responses to the different light conditions. Our results revealed a correlation between the expression of specific genes and the differential response to exclusive exposure to the two light spectra, highlighting a generally enhanced photosynthetic activity of nearly all cultivars to blue light (BL) and, conversely, a negative response to red light (RL). Taken together, our data, by elucidating the response of the olive to specific light spectra and the underlying molecular mechanisms, pave the way for further studies on these traits, which could be useful for the improvement of this species.
植物有能力感知广泛的光谱，它们不仅能从中获取光合作用所需的能量，还能获得由特定光感受器介导的各种环境线索和信号，这些光感受器会触发一系列对其发育至关重要的生化反应。油橄榄（L.）是一种木本植物，尽管其具有农艺和经济价值，但光对其发育的影响仍知之甚少。在本研究中，采用了一种综合方法，对10个不同品种进行表型分析，这些品种仅在红光（RL）和蓝光（BL）下暴露两个月，此外还监测了两个对不同光照条件表现出最显著差异反应的品种中10个光感受器编码基因的表达谱。我们的结果揭示了特定基因的表达与对仅暴露于两种光谱的差异反应之间的相关性，突出了几乎所有品种对蓝光（BL）的光合作用活性普遍增强，相反，对红光（RL）有负面反应。综上所述，我们的数据通过阐明油橄榄对特定光谱的反应及其潜在的分子机制，为进一步研究这些性状铺平了道路，这可能有助于该物种的改良。
