Anna Wilson , Jessica E. Harris , Rocky de Nys , Dean R. Jerry
{"title":"澳大利亚东北部taxxiformis天冬酰胺分子和形态多样性的研究","authors":"Anna Wilson , Jessica E. Harris , Rocky de Nys , Dean R. Jerry","doi":"10.1016/j.algal.2025.104182","DOIUrl":null,"url":null,"abstract":"<div><div>The red seaweed, <em>Asparagopsis taxiformis</em>, consists of multiple genetic lineages that have spread globally through natural and human-mediated dispersal. Endemic to Australia and the Indo-Pacific, <em>A. taxiformis</em> has become an invasive pest in regions such as the Mediterranean Sea. Despite the commercial and ecological importance of this species, the genetic and morphological diversity of Australian populations remains understudied. Understanding this diversity, particularly within biodiversity hotspots like the Great Barrier Reef (GBR), is essential for advancing ecological knowledge and improving conservation and commercial management. This study investigated the genetic and morphological diversity of <em>A. taxiformis</em> within north-eastern Australia, by collecting tetrasporophyte specimens from 13 near and offshore locations in Queensland, including the GBR Marine Park. DNA was extracted from specimens and the chloroplast RuBisCO spacer and mitochondrial <em>cox2-3</em> intergenic spacer (<em>cox2-3)</em> were sequenced to assess genetic diversity. Nine morphological characteristics of the tetrasporophyte were also measured. While little genetic variation was found using the RuBisCO spacer, <em>cox2-3</em> analysis revealed that lineage 5 (L5) was present at two locations, lineage 6 (L6) dominated southern Queensland and lineage 4 (L4) was prevalent in the northern GBR, marking its first record in Australian coastal waters. Morphometric analyses identified significant differences in axial cell width and filament width among L4 and L5, with these traits modelled to be most useful for differentiating between lineages. The findings highlight substantial genetic and morphological diversity within <em>A. taxiformis</em> populations of Australia and the need for further systematic sampling in underrepresented locations.</div></div>","PeriodicalId":7855,"journal":{"name":"Algal Research-Biomass Biofuels and Bioproducts","volume":"90 ","pages":"Article 104182"},"PeriodicalIF":4.6000,"publicationDate":"2025-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Insights into the molecular and morphological diversity of Asparagopsis taxiformis in north-eastern Australia\",\"authors\":\"Anna Wilson , Jessica E. Harris , Rocky de Nys , Dean R. Jerry\",\"doi\":\"10.1016/j.algal.2025.104182\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>The red seaweed, <em>Asparagopsis taxiformis</em>, consists of multiple genetic lineages that have spread globally through natural and human-mediated dispersal. Endemic to Australia and the Indo-Pacific, <em>A. taxiformis</em> has become an invasive pest in regions such as the Mediterranean Sea. Despite the commercial and ecological importance of this species, the genetic and morphological diversity of Australian populations remains understudied. Understanding this diversity, particularly within biodiversity hotspots like the Great Barrier Reef (GBR), is essential for advancing ecological knowledge and improving conservation and commercial management. This study investigated the genetic and morphological diversity of <em>A. taxiformis</em> within north-eastern Australia, by collecting tetrasporophyte specimens from 13 near and offshore locations in Queensland, including the GBR Marine Park. DNA was extracted from specimens and the chloroplast RuBisCO spacer and mitochondrial <em>cox2-3</em> intergenic spacer (<em>cox2-3)</em> were sequenced to assess genetic diversity. Nine morphological characteristics of the tetrasporophyte were also measured. While little genetic variation was found using the RuBisCO spacer, <em>cox2-3</em> analysis revealed that lineage 5 (L5) was present at two locations, lineage 6 (L6) dominated southern Queensland and lineage 4 (L4) was prevalent in the northern GBR, marking its first record in Australian coastal waters. Morphometric analyses identified significant differences in axial cell width and filament width among L4 and L5, with these traits modelled to be most useful for differentiating between lineages. The findings highlight substantial genetic and morphological diversity within <em>A. taxiformis</em> populations of Australia and the need for further systematic sampling in underrepresented locations.</div></div>\",\"PeriodicalId\":7855,\"journal\":{\"name\":\"Algal Research-Biomass Biofuels and Bioproducts\",\"volume\":\"90 \",\"pages\":\"Article 104182\"},\"PeriodicalIF\":4.6000,\"publicationDate\":\"2025-07-02\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Algal Research-Biomass Biofuels and Bioproducts\",\"FirstCategoryId\":\"99\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S2211926425002930\",\"RegionNum\":2,\"RegionCategory\":\"生物学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"BIOTECHNOLOGY & APPLIED MICROBIOLOGY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Algal Research-Biomass Biofuels and Bioproducts","FirstCategoryId":"99","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2211926425002930","RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"BIOTECHNOLOGY & APPLIED MICROBIOLOGY","Score":null,"Total":0}
Insights into the molecular and morphological diversity of Asparagopsis taxiformis in north-eastern Australia
The red seaweed, Asparagopsis taxiformis, consists of multiple genetic lineages that have spread globally through natural and human-mediated dispersal. Endemic to Australia and the Indo-Pacific, A. taxiformis has become an invasive pest in regions such as the Mediterranean Sea. Despite the commercial and ecological importance of this species, the genetic and morphological diversity of Australian populations remains understudied. Understanding this diversity, particularly within biodiversity hotspots like the Great Barrier Reef (GBR), is essential for advancing ecological knowledge and improving conservation and commercial management. This study investigated the genetic and morphological diversity of A. taxiformis within north-eastern Australia, by collecting tetrasporophyte specimens from 13 near and offshore locations in Queensland, including the GBR Marine Park. DNA was extracted from specimens and the chloroplast RuBisCO spacer and mitochondrial cox2-3 intergenic spacer (cox2-3) were sequenced to assess genetic diversity. Nine morphological characteristics of the tetrasporophyte were also measured. While little genetic variation was found using the RuBisCO spacer, cox2-3 analysis revealed that lineage 5 (L5) was present at two locations, lineage 6 (L6) dominated southern Queensland and lineage 4 (L4) was prevalent in the northern GBR, marking its first record in Australian coastal waters. Morphometric analyses identified significant differences in axial cell width and filament width among L4 and L5, with these traits modelled to be most useful for differentiating between lineages. The findings highlight substantial genetic and morphological diversity within A. taxiformis populations of Australia and the need for further systematic sampling in underrepresented locations.
期刊介绍:
Algal Research is an international phycology journal covering all areas of emerging technologies in algae biology, biomass production, cultivation, harvesting, extraction, bioproducts, biorefinery, engineering, and econometrics. Algae is defined to include cyanobacteria, microalgae, and protists and symbionts of interest in biotechnology. The journal publishes original research and reviews for the following scope: algal biology, including but not exclusive to: phylogeny, biodiversity, molecular traits, metabolic regulation, and genetic engineering, algal cultivation, e.g. phototrophic systems, heterotrophic systems, and mixotrophic systems, algal harvesting and extraction systems, biotechnology to convert algal biomass and components into biofuels and bioproducts, e.g., nutraceuticals, pharmaceuticals, animal feed, plastics, etc. algal products and their economic assessment