| Autor: |
Brown AL, Casarez GA, Moeller HV |
| Jazyk: |
angličtina |
| Zdroj: |
The American naturalist [Am Nat] 2023 Oct; Vol. 202 (4), pp. 458-470. Date of Electronic Publication: 2023 Aug 29. |
| DOI: |
10.1086/725918 |
| Abstrakt: |
AbstractAcquired photosynthesis transforms genotypically heterotrophic lineages into autotrophs. Transient acquisitions of eukaryotic chloroplasts may provide key evolutionary insight into the endosymbiosis process-the hypothesized mechanism by which eukaryotic cells obtained new functions via organelle retention. Here, we use an eco-evolutionary model to study the environmental conditions under which chloroplast retention is evolutionarily favorable. We focus on kleptoplastidic lineages-which steal functional chloroplasts from their prey-as hypothetical evolutionary intermediates. Our adaptive dynamics analysis reveals a spectrum of evolutionarily stable strategies ranging from phagotrophy to phototrophy to obligate kleptoplasty. Our model suggests that a low-light niche and weak (or absent) trade-offs between chloroplast retention and overall digestive ability favor the evolution of phototrophy. In contrast, when consumers experience strong trade-offs, obligate kleptoplasty emerges as an evolutionary end point. Therefore, the preevolved trade-offs that underlie an evolving lineage's physiology will likely constrain its evolutionary trajectory. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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