Acclimation potential and biochemical response of four temperate macroalgae to light and future seasonal temperature scenarios
Acclimation potential and biochemical response of four temperate macroalgae to light and future seasonal temperature scenarios
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DOI：
10.1016/j.algal.2021.102190
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发表时间：
2021-04
影响因子：
5.1
通讯作者：
M. Schmid;Freddy Guihéneuf;U. Nitschke;D. B. Stengel
中科院分区：
文献类型：
--
作者：
M. Schmid;Freddy Guihéneuf;U. Nitschke;D. B. Stengel
研究了四种具有商业价值的大型藻类（Ascophyllumnodosum, Fucus serratus,LaminariadigitataandPalmariapalmata）对预测未来北大西洋温度条件（当前季节观测值+2°C）和不同光照条件下的恢复力和生化反应。辐照度的增加对潮间带物种（葡萄属）的生长速率有积极的影响。nodosumandFucus锯肌)。温度对泥鳅生长和叶绿素含量的影响最大，而光照对泥鳅脂肪酸含量和组成的影响更大。光照和温度的变化均不影响掌叶芭蕉的生长，但其生化成分对温度高度敏感。色素和多不饱和脂肪酸在棕色冠层形成的大型藻类中表现出相关的响应，随着光照条件的增加，其浓度降低。通过整合生长和生化成分的变化，评估了必需生物分子和商业相关生物分子的新产量，并将个体和组合环境因子对生长和关键生化成分的影响与不同生境大型藻类的特定驯化潜力联系起来。结果表明，未来的全球变化不仅会影响沿海食物网，而且由于在预期的未来环境制度下生产力和生化成分的变化，可能会影响藻类生物量和高价值化合物的可持续生产。
Resilience and biochemical response to predicted future North Atlantic Ocean temperature conditions (+2 °C of current seasonal observations) and different light conditions were investigated in four commercially valuable macroalgae that naturally inhabit different shore levels (Ascophyllumnodosum, Fucus serratus,LaminariadigitataandPalmariapalmata). Increased irradiances had a positive effect on growth rates of the intertidal species (Ascophyllum.nodosumandFucus serratus). Growth and chlorophyll contents ofLaminaria digitatawere most strongly impacted by temperature, but its fatty acid contents and composition were more strongly controlled by light. Neither changes in light nor temperature affected growth ofPalmaria palmataalthough biochemical composition was highly sensitive to temperature. Pigments and polyunsaturated fatty acids exhibited a correlated response in the brown canopy-forming macroalgae, with decreasing concentrations with increasing light conditions. By integrating growth and changes in biochemical composition, new production of essential and commercially relevant biomolecules was evaluated, Effects of individual and combined environmental factors on growth and key biochemical composition were linked to the specific acclimation potential of macroalgae from different habitats. Results demonstrate that future global change will not only impact on coastal food webs but also has likely impacts on sustainable production of algal biomass and high-value compounds due to changes in productivity and biochemical composition under anticipated future environmental regimes.