Accession

PRJCA032275

Title

Chromosome-level genomes of two Bracteacoccaceae (Chlorophyta) highlight adaptations to biocrusts

Relevance

Evolution

Data types

Whole genome sequencing
Genome sequencing and assembly
Raw sequence reads
Genome sequencing
Assembly

Organisms

Bracteacoccus bullatus
Bracteacoccus minor

Description

Biological soil crusts (biocrusts) cover the majority of the world's dryland ground and are a significant component of the vegetation-free surface of the planet. They consist of an intimate association of microbial organisms, lichens, bryophytes and fungi. Biocrusts are severely endangered by anthropogenic disturbances despite their importance. The genus Bracteacoccus (Sphaeropleales, Chlorophyta) is a ubiquitous component of biocrusts from extreme environments. Here, we present the chromosome-level genome sequences of two Bracteacoccus species, B. bullatus and B. minor. Genome comparisons with other Archaeplastida identify genomic features that highlight the adaptation of these algae to abiotic stresses prevailing in such environments. These features include horizontal gene transfer events mainly from bacteria or fungi, gains and expansions of stress-related gene families, neofunctionalization of genes following gene duplications and genome structural variations. We also summarize transcriptional and metabolic responses of the lipid pathway of B. minor, based on multi-omics analyses, which is important for balancing the flexible conversion of polar membrane lipids and non-polar storage lipids to cope with various abiotic stresses. Under dehydration and high-temperature stress conditions B. minor differs considerably from other eukaryotic algae. Overall, these findings provide insights into the genetic basis of adaptation to abiotic stress in biocrust algae.

Sample scope

Monoisolate

Release date

2024-11-14

Grants

Agency	program	Grant ID	Grant title
No funding support

Submitter

Michael Melkonian (lisi6908@gmail.com)

Organization

Max Planck Institute for Plant Breeding Research, MPIPZ

Submission date

2024-11-12

Project Data

Resource name	Description
BioSample (29) show	-
SAMC4380186	RNA-Seq of Bracteacoccus minor SAG 221-1 (glucose light replicate 3)
SAMC4380185	RNA-Seq of Bracteacoccus minor SAG 221-1 (glucose light replicate 2)
SAMC4380184	RNA-Seq of Bracteacoccus minor SAG 221-1 (glucose light replicate 1)
SAMC4380183	RNA-Seq of Bracteacoccus minor SAG 221-1 (glucose dark replicate 3)
SAMC4380182	RNA-Seq of Bracteacoccus minor SAG 221-1 (glucose dark replicate 2)
SAMC4380181	RNA-Seq of Bracteacoccus minor SAG 221-1 (glucose dark replicate 1)
SAMC4380180	RNA-Seq of Bracteacoccus minor SAG 221-1 (Dehytration control replicate 3)
SAMC4380179	RNA-Seq of Bracteacoccus minor SAG 221-1 (Dehytration control replicate 2)
SAMC4380178	RNA-Seq of Bracteacoccus minor SAG 221-1 (Dehytration control replicate 1)
SAMC4380177	RNA-Seq of Bracteacoccus minor SAG 221-1 (Dehydration 24hrs replicate 3)
SAMC4380176	RNA-Seq of Bracteacoccus minor SAG 221-1 (Dehydration 24hrs replicate 2)
SAMC4380175	RNA-Seq of Bracteacoccus minor SAG 221-1 (Dehydration 24hrs replicate 1)
SAMC4380174	RNA-Seq of Bracteacoccus minor SAG 221-1 (Dehytration 4hrs replicate 3)
SAMC4380173	RNA-Seq of Bracteacoccus minor SAG 221-1 (Dehytration 4hrs replicate 2)
SAMC4380172	RNA-Seq of Bracteacoccus minor SAG 221-1 (Dehytration 4hrs replicate 1)
SAMC4380171	RNA-Seq of Bracteacoccus minor SAG 221-1 (Heat shock control 20 replicate 3)
SAMC4380170	RNA-Seq of Bracteacoccus minor SAG 221-1 (Heat shock control 20 replicate 2)
SAMC4380169	RNA-Seq of Bracteacoccus minor SAG 221-1 (Heat shock control 20 replicate 1)
SAMC4380168	RNA-Seq of Bracteacoccus minor SAG 221-1 (Heat shock 40 replicate 3)
SAMC4380167	RNA-Seq of Bracteacoccus minor SAG 221-1 (Heat shock 40 replicate 2)
SAMC4380166	RNA-Seq of Bracteacoccus minor SAG 221-1 (Heat shock 40 replicate 1)
SAMC4380165	RNA-Seq of Bracteacoccus minor SAG 221-1 (Nitrogen Limitation Control replicate 3)
SAMC4380164	RNA-Seq of Bracteacoccus minor SAG 221-1 (Nitrogen Limitation Control replicate 2)
SAMC4380163	RNA-Seq of Bracteacoccus minor SAG 221-1 (Nitrogen Limitation Control replicate 1)
SAMC4380162	RNA-Seq of Bracteacoccus minor SAG 221-1 (Nitrogen Limitation replicate 3)
SAMC4380161	RNA-Seq of Bracteacoccus minor SAG 221-1 (Nitrogen Limitation replicate 2)
SAMC4380160	RNA-Seq of Bracteacoccus minor SAG 221-1 (Nitrogen Limitation replicate 1)
SAMC4380159	Bracteacoccus minor (SAG 221-1)
SAMC4380158	Bracteacoccus bullatus (SAG 2032)