2022
DOI: 10.3389/fmars.2022.924452
|View full text |Cite
|
Sign up to set email alerts
|

Si decline and diatom evolution: Insights from physiological experiments

Abstract: In today’s oceans, diatoms are abundant and diverse primary producers distinguished by their silica shells. Although molecular clocks suggest that diatoms arose as much as 250 million years ago (Ma), the earliest known diatom fossils date from 190 Ma, leading to the suggestion that early diatoms were at best lightly silicified. By the Cretaceous Period, large circular (in cross section) diatoms with highly silicified frustules thrived in surface oceans, only later to be joined by species with elongated and thi… Show more

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...
3
1
1

Citation Types

0
8
0

Year Published

2023
2023
2024
2024

Publication Types

Select...
5

Relationship

1
4

Authors

Journals

citations
Cited by 5 publications
(8 citation statements)
references
References 84 publications
0
8
0
Order By: Relevance
“…A change in C fractionation could be due to a shift in inorganic C source ( Vuorio et al., 2006 ); in particular, higher light intensity led to decreased fractionation and therefore an increased use of HCO 3 − occurred during photosynthesis. A CO 2 concentrating mechanism was therefore activated when more energy was available ( Riebesell et al., 2000 ; Giordano et al., 2005 ; Petrucciani et al., 2022b ). Moreover, all diatom species decreased N fractionation in response to higher light intensity ( Figure 4 ), suggesting that the higher supply of energy provided more reducing power, which, in turn, was exploited in the assimilation of more costly N species ( Needoba et al., 2003 ; Needoba and Harrison, 2004 ).…”
Section: Discussionmentioning
confidence: 99%
See 4 more Smart Citations
“…A change in C fractionation could be due to a shift in inorganic C source ( Vuorio et al., 2006 ); in particular, higher light intensity led to decreased fractionation and therefore an increased use of HCO 3 − occurred during photosynthesis. A CO 2 concentrating mechanism was therefore activated when more energy was available ( Riebesell et al., 2000 ; Giordano et al., 2005 ; Petrucciani et al., 2022b ). Moreover, all diatom species decreased N fractionation in response to higher light intensity ( Figure 4 ), suggesting that the higher supply of energy provided more reducing power, which, in turn, was exploited in the assimilation of more costly N species ( Needoba et al., 2003 ; Needoba and Harrison, 2004 ).…”
Section: Discussionmentioning
confidence: 99%
“…Cell number and cell volume were measured using a CASY TT cell counter (Innovatis AG, Reutlingen, Germany) as described in Petrucciani et al. (2022b) .…”
Section: Methodsmentioning
confidence: 99%
See 3 more Smart Citations