Costamagna Carla A, Lavado Raúl S, Molina Fernando V, Lagorio María Gabriela
Facultad de Ciencias Exactas y Naturales, Dpto de Química Inorgánica, Analítica y Química Física, Universidad de Buenos Aires, Ciudad Universitaria, Pabellón II, 1Er Piso, C1428EHA, Buenos Aires, Argentina.
Facultad de Agronomía/Instituto de Investigaciones en Biociencias Agrícolas y Ambientales (INBA) Av, Universidad de Buenos Aires, San Martín 4453, 1417, Buenos Aires, Argentina.
Photochem Photobiol Sci. 2025 May;24(5):813-825. doi: 10.1007/s43630-025-00729-4. Epub 2025 May 7.
The effects on the growth of basil (Ocimum basilicum L.) due to the presence of arsenic and vanadium, recently incorporated on the soil, were studied. Besides biomass and morphology, particular emphasis was placed in studying the effect on photosynthetic systems by spectroscopical methods, including reflectance and fluorescence (both stationary and variable) measurements. Assays were conducted in quadruplicate in the presence of arsenic, vanadium and both together, as well as control assays. Arsenic showed stronger effect on growth compared with vanadium, whereas both combined almost stopped growth. The presence of arsenic disrupted the photosynthetic machinery in basil, significantly impairing electron transfer processes within the chloroplasts. Notably, the negative effects on plants were most severe under both contaminants jointly, followed by arsenic alone, whereas vanadium alone showed the lesser effect.
研究了近期添加到土壤中的砷和钒对罗勒（Ocimum basilicum L.）生长的影响。除了生物量和形态外，还特别着重通过光谱学方法研究对光合系统的影响，包括反射率和荧光（静态和可变）测量。在有砷、钒以及两者同时存在的情况下进行了四次重复试验，同时也设置了对照试验。与钒相比，砷对生长的影响更强，而两者共同存在时几乎使生长停止。砷的存在破坏了罗勒的光合机制，显著损害了叶绿体内的电子传递过程。值得注意的是，两种污染物共同存在时对植物的负面影响最为严重，其次是单独的砷，而单独的钒影响最小。
