Photosynthetic sea slugs inflict protective changes to the light reactions of the chloroplasts they steal from algae

BioRxiv : the Preprint Server for Biology
V. Havurinne, E. Tyystjärvi

Abstract

Sacoglossan sea slugs are able to maintain functional chloroplasts inside their own cells, and mechanisms that allow preservation of the chloroplasts are unknown. We found that the slug Elysia timida inflicts changes to the photosynthetic light reactions of the chloroplasts it steals from the alga Acetabularia acetabulum. Working with a large continuous laboratory culture of both the slugs (>500 individuals) and their prey algae, we show that the plastoquinone pool of slug chloroplasts remains oxidized, which can suppress reactive oxygen species formation. Slug chloroplasts also rapidly build up a strong proton motive force upon a dark-to-light transition, which helps them to rapidly switch on photoprotective non-photochemical quenching of excitation energy. Finally, our results suggest that chloroplasts inside E. timida rely on flavodiiron proteins as electron sinks during rapid changes in light intensity. These photoprotective mechanisms are expected to contribute to the long-term functionality of the chloroplasts inside the slugs.

Related Concepts

Biochemical Pathway
Patterns
Genome
Genes
Neoplasms
Clone
Genomics
Pseudomonas sp. SSA
Analysis
Malignant Neoplasms

Related Feeds

BioRxiv & MedRxiv Preprints

BioRxiv and MedRxiv are the preprint servers for biology and health sciences respectively, operated by Cold Spring Harbor Laboratory. Here are the latest preprint articles (which are not peer-reviewed) from BioRxiv and MedRxiv.

Cancer Genomics (Keystone)

Cancer genomics approaches employ high-throughput technologies to identify the complete catalog of somatic alterations that characterize the genome, transcriptome and epigenome of cohorts of tumor samples. Discover the latest research using such technologies in this feed.

Cancer Genomics (Preprints)

Cancer genomics employ high-throughput technologies to identify the complete catalog of somatic alterations that characterize the genome, transcriptome and epigenome of cohorts of tumor samples. Discover the latest preprints here.

Cancer Genomics

Cancer genomics employ high-throughput technologies to identify the complete catalog of somatic alterations that characterize the genome, transcriptome and epigenome of cohorts of tumor samples. Discover the latest research here.

Breast Cancer: Risk Factors

Breast cancer is a multifactorial disease that is influenced by both environmental and genetic factors. Discover the latest research on the environmental and genetic risk factors for breast cancer here.

Related Papers

The Journal of Cell Biology
L Bogorad
Tanpakushitsu kakusan koso. Protein, nucleic acid, enzyme
S Murakami
Cold Spring Harbor Symposia on Quantitative Biology
H OzekiK Umesono
© 2020 Meta ULC. All rights reserved