Beyond nitrogen: phosphorus – estimating the minimum niche dimensionality for resource competition between phytoplankton

Hofmann, Peter; Clark, Adam Thomas; Hoffmann, Petra; Chatzinotas, Antonis; Dunker, Susanne

doi:10.1111/ele.13695

Cited by 17 publications

(8 citation statements)

References 65 publications

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“…Macronutrient E:P was relatively conserved across isolates (except for S:P), with differences in micronutrient E:P primarily responsible for isolate-specific elementomes (for both E:P and absolute data), a phenomenon documented for other marine algae [ 21 , 22 ]. There is generally less storage capacity for micronutrients making changes in stoichiometry more identifiable and our observations support recent suggestions that expansion beyond C:N:P is required to resolve a species’ biogeochemical niche [ 53 ]. Some isolates, such as CCMP2464 had large variability in elementomes between biological replicates.…”

Section: Discussionsupporting

confidence: 86%

Micronutrient content drives elementome variability amongst the Symbiodiniaceae

et al. 2022

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Background Elements are the basis of life on Earth, whereby organisms are essentially evolved chemical substances that dynamically interact with each other and their environment. Determining species elemental quotas (their elementome) is a key indicator for their success across environments with different resource availabilities. Elementomes remain undescribed for functionally diverse dinoflagellates within the family Symbiodiniaceae that includes coral endosymbionts. We used dry combustion and ICP-MS to assess whether Symbiodiniaceae (ten isolates spanning five genera Breviolum, Cladocopium, Durusdinium, Effrenium, Symbiodinium) maintained under long-term nutrient replete conditions have unique elementomes (six key macronutrients and nine micronutrients) that would reflect evolutionarily conserved preferential elemental acquisition. For three isolates we assessed how elevated temperature impacted their elementomes. Further, we tested whether Symbiodiniaceae conform to common stoichiometric hypotheses (e.g., the growth rate hypothesis) documented in other marine algae. This study considers whether Symbiodiniaceae isolates possess unique elementomes reflective of their natural ecologies, evolutionary histories, and resistance to environmental change. Results Symbiodiniaceae isolates maintained under long-term luxury uptake conditions, all exhibited highly divergent elementomes from one another, driven primarily by differential content of micronutrients. All N:P and C:P ratios were below the Redfield ratio values, whereas C:N was close to the Redfield value. Elevated temperature resulted in a more homogenised elementome across isolates. The Family-level elementome was (C19.8N2.6 P1.0S18.8K0.7Ca0.1) · 1000 (Fe55.7Mn5.6Sr2.3Zn0.8Ni0.5Se0.3Cu0.2Mo0.1V0.04) mmol Phosphorous-1 versus (C25.4N3.1P1.0S23.1K0.9Ca0.4) · 1000 (Fe66.7Mn6.3Sr7.2Zn0.8Ni0.4Se0.2Cu0.2Mo0.2V0.05) mmol Phosphorous -1 at 27.4 ± 0.4 °C and 30.7 ± 0.01 °C, respectively. Symbiodiniaceae isolates tested here conformed to some, but not all, stoichiometric principles. Conclusions Elementomes for Symbiodiniaceae diverge from those reported for other marine algae, primarily via lower C:N:P and different micronutrient expressions. Long-term maintenance of Symbiodiniaceae isolates in culture under common nutrient replete conditions suggests isolates have evolutionary conserved preferential uptake for certain elements that allows these unique elementomes to be identified. Micronutrient content (normalised to phosphorous) commonly increased in the Symbiodiniaceae isolates in response to elevated temperature, potentially indicating a common elemental signature to warming.

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Section: Discussionsupporting

confidence: 86%

Micronutrient content drives elementome variability amongst the Symbiodiniaceae

et al. 2022

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“…However, the grouping of species differed depending on whether macronutrients or micronutrients and trace elements were used, suggesting a weak or non-existent relationship between both groups of elements across species. This result further indicates that each element may provide unique information regarding the functioning of the organisms and, therefore, studies using only macronutrients such as C, N, and P may be missing an important set of features of the organisms under study, as suggested by several authors [ 18 , 38 ].…”

Section: Discussionmentioning

confidence: 88%

Do Bryophyte Elemental Concentrations Explain Their Morphological Traits?

Fernández‐Martínez

Corbera²,

Cano-Rocabayera

et al. 2021

Plants

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Differences in the elemental composition of plants, mainly C, N, and P, have been shown to be related to differences in their nutritional status, and their morphological and functional traits. The relationship between morphological traits and micronutrients and trace elements, however, has been much less studied. Additionally, in bryophytes, research devoted to investigating these relationships is still very scarce. Here, we analysed 80 samples from 29 aquatic and semi-aquatic (hygrophytic) moss species living in Mediterranean springs to investigate the relationship between moss nutrient concentrations and their micro- and macroscopic morphological traits and growth forms. We found that, across species, the elemental concentration of mosses was more tightly linked to macroscopic traits than to microscopic traits. Growth forms could also be successfully explained by the concentration of elements in mosses. Apart from macronutrients and their stoichiometric ratios (C:N, C:P, and N:P), micronutrients and trace elements were also important variables predicting moss morphological traits and growth forms. Additionally, our results showed that microscopic traits were well related to macroscopic traits. Overall, our results clearly indicate that the elemental composition of mosses can be used to infer their morphological traits, and that elements other than macronutrients should be taken into account to achieve a good representation of their morphological and, potentially, functional traits when comparing the elemental composition across species.

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“…Understanding ionome-wide shifts in NUEs should have important ecological and evolutionary implications, because it represents a change in the biogeochemical niche [29]. While much remains to be understood about the ecological relevance of ionomes [27,34,59], we do know that differences in the NUE of multiple elements impact trophic transfer (e.g. [35]), and can alter the geochemical environment for subsequent generations (e.g.…”

Section: Discussionmentioning

confidence: 99%

Adaptation to a limiting element involves mitigation of multiple elemental imbalances

Jeyasingh

Sherman

Prater

et al. 2023

J. R. Soc. Interface.

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About 20 elements underlie biology and thus constrain biomass production. Recent systems-level observations indicate that altered supply of one element impacts the processing of most elements encompassing an organism (i.e. ionome). Little is known about the evolutionary tendencies of ionomes as populations adapt to distinct biogeochemical environments. We evolved the bacterium Serratia marcescens under five conditions (i.e. low carbon, nitrogen, phosphorus, iron or manganese) that limited the yield of the ancestor compared with replete medium, and measured the concentrations and use efficiency of these five, and five other elements. Both physiological responses of the ancestor, as well as evolutionary responses of descendants to experimental environments involved changes in the content and use efficiencies of the limiting element, and several others. Differences in coefficients of variation in elemental contents based on biological functions were evident, with those involved in biochemical building (C, N, P, S) varying least, followed by biochemical balance (Ca, K, Mg, Na), and biochemical catalysis (Fe, Mn). Finally, descendants evolved to mitigate elemental imbalances evident in the ancestor in response to limiting conditions. Understanding the tendencies of such ionomic responses will be useful to better forecast biological responses to geochemical changes.

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Beyond nitrogen: phosphorus – estimating the minimum niche dimensionality for resource competition between phytoplankton

Cited by 17 publications

References 65 publications

Micronutrient content drives elementome variability amongst the Symbiodiniaceae

Micronutrient content drives elementome variability amongst the Symbiodiniaceae

Do Bryophyte Elemental Concentrations Explain Their Morphological Traits?

Adaptation to a limiting element involves mitigation of multiple elemental imbalances

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