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Title: A scaffolded and annotated reference genome of giant kelp (Macrocystis pyrifera)

Abstract

Abstract Macrocystis pyrifera (giant kelp), is a brown macroalga of great ecological importance as a primary producer and structure-forming foundational species that provides habitat for hundreds of species. It has many commercial uses (e.g. source of alginate, fertilizer, cosmetics, feedstock). One of the limitations to exploiting giant kelp’s economic potential and assisting in giant kelp conservation efforts is a lack of genomic tools like a high quality, contiguous reference genome with accurate gene annotations. Reference genomes attempt to capture the complete genomic sequence of an individual or species, and importantly provide a universal structure for comparison across a multitude of genetic experiments, both within and between species. We assembled the giant kelp genome of a haploid female gametophyte de novo using PacBio reads, then ordered contigs into chromosome level scaffolds using Hi-C. We found the giant kelp genome to be 537 MB, with a total of 35 scaffolds and 188 contigs. The assembly N50 is 13,669,674 with GC content of 50.37%. We assessed the genome completeness using BUSCO, and found giant kelp contained 94% of the BUSCO genes from the stramenopile clade. Annotation of the giant kelp genome revealed 25,919 genes. Additionally, we present genetic variation data based on 48 diploidmore » giant kelp sporophytes from three different Southern California populations that confirms the population structure found in other studies of these populations. This work resulted in a high-quality giant kelp genome that greatly increases the genetic knowledge of this ecologically and economically vital species.« less

Authors:
; ; ; ; ; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Advanced Research Projects Agency - Energy (ARPA-E); USDOE Office of Science (SC), Biological and Environmental Research (BER); USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities (SUF)
OSTI Identifier:
1999966
Alternate Identifier(s):
OSTI ID: 2283391
Grant/Contract Number:  
FOA-0001726-1513; AC02-05CH11231
Resource Type:
Published Article
Journal Name:
BMC Genomics
Additional Journal Information:
Journal Name: BMC Genomics Journal Volume: 24 Journal Issue: 1; Journal ID: ISSN 1471-2164
Publisher:
Springer Science + Business Media
Country of Publication:
United Kingdom
Language:
English
Subject:
60 APPLIED LIFE SCIENCES; Genome; Giant kelp; Macrocystis pyrifera; Brown macroalga; Population genetics

Citation Formats

Diesel, Jose, Molano, Gary, Montecinos, Gabriel J., DeWeese, Kelly, Calhoun, Sara, Kuo, Alan, Lipzen, Anna, Salamov, Asaf, Grigoriev, Igor V., Reed, Daniel C., Miller, Robert J., Nuzhdin, Sergey V., and Alberto, Filipe. A scaffolded and annotated reference genome of giant kelp (Macrocystis pyrifera). United Kingdom: N. p., 2023. Web. doi:10.1186/s12864-023-09658-x.
Diesel, Jose, Molano, Gary, Montecinos, Gabriel J., DeWeese, Kelly, Calhoun, Sara, Kuo, Alan, Lipzen, Anna, Salamov, Asaf, Grigoriev, Igor V., Reed, Daniel C., Miller, Robert J., Nuzhdin, Sergey V., & Alberto, Filipe. A scaffolded and annotated reference genome of giant kelp (Macrocystis pyrifera). United Kingdom. https://doi.org/10.1186/s12864-023-09658-x
Diesel, Jose, Molano, Gary, Montecinos, Gabriel J., DeWeese, Kelly, Calhoun, Sara, Kuo, Alan, Lipzen, Anna, Salamov, Asaf, Grigoriev, Igor V., Reed, Daniel C., Miller, Robert J., Nuzhdin, Sergey V., and Alberto, Filipe. Wed . "A scaffolded and annotated reference genome of giant kelp (Macrocystis pyrifera)". United Kingdom. https://doi.org/10.1186/s12864-023-09658-x.
@article{osti_1999966,
title = {A scaffolded and annotated reference genome of giant kelp (Macrocystis pyrifera)},
author = {Diesel, Jose and Molano, Gary and Montecinos, Gabriel J. and DeWeese, Kelly and Calhoun, Sara and Kuo, Alan and Lipzen, Anna and Salamov, Asaf and Grigoriev, Igor V. and Reed, Daniel C. and Miller, Robert J. and Nuzhdin, Sergey V. and Alberto, Filipe},
abstractNote = {Abstract Macrocystis pyrifera (giant kelp), is a brown macroalga of great ecological importance as a primary producer and structure-forming foundational species that provides habitat for hundreds of species. It has many commercial uses (e.g. source of alginate, fertilizer, cosmetics, feedstock). One of the limitations to exploiting giant kelp’s economic potential and assisting in giant kelp conservation efforts is a lack of genomic tools like a high quality, contiguous reference genome with accurate gene annotations. Reference genomes attempt to capture the complete genomic sequence of an individual or species, and importantly provide a universal structure for comparison across a multitude of genetic experiments, both within and between species. We assembled the giant kelp genome of a haploid female gametophyte de novo using PacBio reads, then ordered contigs into chromosome level scaffolds using Hi-C. We found the giant kelp genome to be 537 MB, with a total of 35 scaffolds and 188 contigs. The assembly N50 is 13,669,674 with GC content of 50.37%. We assessed the genome completeness using BUSCO, and found giant kelp contained 94% of the BUSCO genes from the stramenopile clade. Annotation of the giant kelp genome revealed 25,919 genes. Additionally, we present genetic variation data based on 48 diploid giant kelp sporophytes from three different Southern California populations that confirms the population structure found in other studies of these populations. This work resulted in a high-quality giant kelp genome that greatly increases the genetic knowledge of this ecologically and economically vital species.},
doi = {10.1186/s12864-023-09658-x},
journal = {BMC Genomics},
number = 1,
volume = 24,
place = {United Kingdom},
year = {Wed Sep 13 00:00:00 EDT 2023},
month = {Wed Sep 13 00:00:00 EDT 2023}
}

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