CONICET - Universidad de Buenos Aires, Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura (IFEVA), Buenos Aires, Argentina.
CONICET - Universidad de Buenos Aires, Instituto de Investigaciones en Producción Animal (INPA), Buenos Aires, Argentina.
Chemosphere. 2018 Aug;204:398-404. doi: 10.1016/j.chemosphere.2018.04.048. Epub 2018 Apr 10.
The presence of arsenic (As) in groundwater is a major problem in several parts of Latin America. In the present work, non-destructive approaches to monitor the effects of As on plants of Cichorium intybus, an herbaceous Asteraceae, were explored. In this sense, the effects of As at different levels of water and radiation were evaluated on these crops. Plants were grown in a greenhouse, watered daily with As solutions and exposed to different water and/or light conditions for four months, using a three-factor (As, water, radiation) and two-level resource (As vs non As, field capacity vs half-field capacity condition, light vs shade condition) factorial design. The parameters most affected by this treatment were the area under the first derivative of the reflectance spectrum in the blue region, chlorophyll concentration, the F/F fluorescence ratio and the quantum yield for the photophysical decay. These changes indicated the ability of this plant species to be a biomonitor for the presence of arsenic in irrigation water. Interestingly, it was further proved in this work that the biomonitoring capacity was enhanced in the presence of sunlight.
地下水砷（As）的存在是拉丁美洲多个地区的主要问题。在本工作中，探索了非破坏性方法来监测砷对菊苣（一种草本菊科植物）植物的影响。从这个意义上说，评估了砷在不同的水和辐射水平下对这些作物的影响。植物在温室中生长，每天用砷溶液浇水，并在四个月内暴露于不同的水温和/或光照条件下，使用三因素（砷、水、辐射）和双水平资源（砷与非砷、田间持水量与半田间持水量条件、光照与遮荫条件）析因设计。受这种处理影响最大的参数是蓝区反射光谱一阶导数下的面积、叶绿素浓度、F/F 荧光比和光物理衰减的量子产率。这些变化表明，该植物物种能够成为灌溉水中砷存在的生物监测器。有趣的是，这项工作进一步证明，在阳光的存在下，生物监测能力得到了增强。
