Homogeneity of Photosynthetic Features in Canopy-Forming Macroalgae of The Order Fucales from Shallow and Sheltered Environments

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2022-05-25 DOI:10.5252/cryptogamie-algologie2022v43a6

E. Ballesteros, N. Sant

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引用次数: 3

Abstract

ABSTRACT Photosynthetic features of different canopy-forming macroalgae of the order Fucales (Phaeophyceae) living in shallow and sheltered environments show a high homogeneity when compared with other morphologically similar species living across a depth gradient. Photosynthesis at saturation (situated around 5 mg O2 gAFDM 1 h1) and photosynthetic efficiency [around 0.4 mg O2·m2 s (µmol photon·gAFDM·h)-1] are relatively low, while dark respiration (around 1 mg O2 gAFDM 1 h1) and light at compensation (around 24 µmol photon·m-2·s-1) are relatively high, as it corresponds to the characteristics of “sun” plants. C:N and C:P ratios suggest a strong nutrient limitation for growth and photosynthesis, in agreement with the low dissolved nutrient levels usually found in shallow Mediterranean waters. Homogeneity in photosynthetic features points to a good local adaptation of the different species to the prevailing light conditions but opens the question of which are the factors allowing the coexistence of different species of Fucales in sheltered and shallow Mediterranean environments.

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浅海和遮荫环境中形成冠层的角藻目大型藻类光合特性的同质性

与其他形态相似的物种相比，生活在浅水和遮蔽环境中的不同角藻目(Phaeophyceae)巨藻的光合特性表现出高度的同质性。饱和光合作用(约5 mg O2 gAFDM 1 h1)和光合效率(约0.4 mg O2·m2 s(µmol光子·gAFDM·h)-1)相对较低，而暗呼吸(约1 mg O2 gAFDM 1 h1)和光补偿(约24µmol光子·m-2·s-1)相对较高，因为它符合“太阳”植物的特征。C:N和C:P比值表明对生长和光合作用有很强的营养限制，这与通常在地中海浅水中发现的低溶解营养水平一致。光合作用特征的同质性表明，不同物种对当地普遍的光照条件具有良好的适应性，但也提出了一个问题，即哪些因素允许不同种类的岩藻在有遮蔽的地中海浅水环境中共存。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.