Algae and aquatic macrophytes responses to cope to ultraviolet radiation - a review.
Algae and aquatic macrophytes responses to cope to ultraviolet radiation - a review.
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DOI：
10.9755/ejfa.v24i6.527545
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发表时间：
2012-01-01
影响因子：
1.1
通讯作者：
Pessoa, M. F.
中科院分区：
文献类型：
--
作者：
Pessoa, M. F.
自从人们认识到南极洲的臭氧层空洞以及人类活动、臭氧层损耗和生物相关波段的紫外线辐射对藻类和整个生物体的影响之间的关系以来，紫外线辐射已成为一个重要问题。所有水生生物都以藻类和水生植物为食物和栖息地；它们还提供氧气和封存二氧化碳，因此这一营养层的干扰造成了全球失衡。紫外线的有害影响，特别是紫外线-B，在实验室和现场进行了研究，并在一大批科学家的科学报告中进行了报告。紫外线诱导的修复机制允许某些物种在紫外线照射下存活，广泛存在于藻类和所有水生系统(淡水、海水和微咸水)的浮游植物中。本研究概述了有关UV-B辐射(UV-B-lambda=280-315 nm)和UV-A辐射(lambda=315-400 nm)的现有文献，这些文献涉及水生光自养生物(微型和大型藻类，以及大型水生植物，如海草和苔类)为应对这些辐射波段而制定的保护策略。它包括从淡水(池塘和湖泊)到沿海和公海的原核蓝藻、藻类、硅藻、甲藻、红藻、褐藻和绿藻的研究。它还报告了有关暴露在紫外线照射下的海洋和淡水植物的现有研究。
UV radiation has become an important issue since awareness of the ozone hole in Antarctica and the relationship between human activity, the depletion of the ozone layer, and the effects of ultraviolet radiation in the biologically relevant wavebands on algae and on organisms in general. All aquatic organisms depend on algae and aquatic plants for food and shelter; they also provide oxygen and sequester carbon dioxide, so a disturbance in this trophic layer creates a global unbalancing. Harmful effects of UV, especially UV-B, were studied in the laboratory and the field and reported in scientific reports from a large team of scientists. UV-induced repair mechanisms allowing the survival of certain species under UV irradiation are widely documented in algae species, and in phytoplankton of all aquatic systems (freshwater, marine and brackish water). This study provides an overview of the available literature on the ultraviolet-B (UV-B-lambda=280-315 nm) and UV-A radiation (lambda=315-400 nm) concerning the strategies of protection developed by aquatic photoautotrophs (micro and macroalgae, and aquatic macrophytes, like seagrasses and liverworts) to cope with these wavebands of radiation. It includes studies on prokaryotic cyanobacteria, haptophytes, diatoms, dinoflagellates, red algae, brown algae and chlorophytes from freshwater (ponds and lakes) to the marine littoral and the open ocean. It also reports available studies concerning marine and freshwater plants exposed to UV irradiation.