{"id":812,"date":"2018-07-18T14:04:15","date_gmt":"2018-07-18T18:04:15","guid":{"rendered":"https:\/\/www2.whoi.edu\/site\/andersonlab\/?page_id=812"},"modified":"2021-02-18T09:47:34","modified_gmt":"2021-02-18T13:47:34","slug":"en-gen-gene-expression-and-harmful-algal-bloom-dynamics","status":"publish","type":"page","link":"https:\/\/www2.whoi.edu\/site\/andersonlab\/past-projects\/en-gen-gene-expression-and-harmful-algal-bloom-dynamics\/","title":{"rendered":"En-Gen: Gene expression and harmful algal bloom dynamics"},"content":{"rendered":"\n\n<h2>En-Gen: Gene expression and harmful algal bloom dynamics<\/h2>\n\n<p>The overall goal of this project is to identify the key cellular processes involved in harmful algal blooms (HABs), commonly called &#8220;red tides&#8221;. HABs pose a major threat to human health, ecosystem health, and fisheries resources throughout the world. Our model system is the toxic dinoflagellate\u00a0<em>Alexandrium tamarense<\/em>, a unicellular alga that produces saxitoxins, the neurotoxins that cause paralytic shellfish poisoning, the most widespread of all HAB poisoning syndromes. With the recent development genomic resources for\u00a0<em>A. tamarense<\/em>, it is now possible to conduct studies of environmental regulation of gene expression in this important species and to begin to unravel the mysteries of bloom dynamics and cellular metabolism at a level that has never before been possible. We propose to identify transcriptionally regulated genes and pathways during the three general stages of a bloom: initiation, development, and termination. Specifically, we propose to create a microarray for\u00a0<em>A. tamarense<\/em>\u00a0to:<\/p>\n<p>\u2022 Identify the key genes involved in the initiation of\u00a0<em>A. tamarense<\/em> blooms, specifically those regulated during the germination of resting cyst life stages;<\/p>\n<p>\u2022 Identify the key genes involved in the development and maintenance of\u00a0<em>A. tamarense<\/em> blooms, specifically those involved in the assimilation of organic and inorganic nutrients, the process of photosynthesis, the production of toxins, and the cell division cycle;<\/p>\n<p>\u2022 Identify the key genes involved in the termination of\u00a0<em>A. tamarense<\/em> blooms, specifically those regulated in response to nutrient limitation, and during the transition from vegetative growth to the sexual cycle that results in resting stage formation;<\/p>\n<p>\u2022 Investigate the physiological state of dinoflagellate cells in situ, by comparing expression profiles of a natural bloom population with the data generated from laboratory cultures. This study is an integrated, collaborative program that relies on expertise in <em>A. tamarense <\/em>molecular evolution, genomics, physiology, ecology, and toxicity. It will produce a valuable molecular resource for scientists working to understand the ecology and toxicity of <em>A. tamarense <\/em>and other HAB species and will provide insights into the unique genome of these fascinating, evolutionarily, and economically important, yet understudied protists.<\/p>\n\nErdner, D.L. and D.M. Anderson. 2006.\u00a0<a href=\"http:\/\/www.whoi.edu\/fileserver.do?id=36869&amp;pt=2&amp;p=28251\">Global transcriptional profiling of the toxic<br \/>\ndinoflagellate Alexandrium fundyense using Massively Parallel Signature Sequencing<\/a>.<br \/>\nBMC Genomics 7:88 (1-11).\nHackett, J. D., D. Anderson, D. Erdner, and D. Bhattacharya. 2004a.\u00a0<a href=\"http:\/\/www.whoi.edu\/fileserver.do?id=36084&amp;pt=2&amp;p=28251\">Dinoflagellates: A<br \/>\nremarkable evolutionary experiment<\/a>. Amer. J. of Botany 91: 1523-1534.\nHackett, J.D., H.S. Yoon, and D. Bhattacharya. 2006. The genomes of dinoflagellates. In:<br \/>\nGenome Evolution in Eukaryotic Microbes, (Eds.) L.A. Katz and D. Bhattacharya.<br \/>\nOxford University Press.\n\t\t\t\t<a href=\"https:\/\/www2.whoi.edu\/site\/andersonlab\/wp-content\/uploads\/sites\/20\/2018\/07\/En-gen_77112.jpg\" target=\"_self\" rel=\"noopener noreferrer\">\n\t\t\t\t<img loading=\"lazy\" src=\"https:\/\/www2.whoi.edu\/site\/andersonlab\/wp-content\/uploads\/sites\/20\/2018\/07\/En-gen_77112.jpg\" alt=\"(A) Light microscopic image of Alexandrium tamarense. (B) DAPI-stained haploid cell of A. tamarense showing the numerous chromosomes.\" height=\"219\" width=\"576\" title=\"En-gen_77112\" \/>\n\t\t\t\t<\/a>\n\t\t(A) Light microscopic image of Alexandrium tamarense. (B) DAPI-stained haploid cell of A. tamarense showing the numerous chromosomes. (D. Bhattacharya, U. Iowa)\n\n","protected":false},"excerpt":{"rendered":"<p>En-Gen: Gene expression and harmful algal bloom dynamics The overall goal of this project is to identify the key cellular processes involved in harmful algal blooms (HABs), commonly called &#8220;red tides&#8221;. HABs pose a major threat to human health, ecosystem health, and fisheries resources throughout the world. Our model system is the toxic dinoflagellate\u00a0Alexandrium tamarense,&hellip;<\/p>\n","protected":false},"author":2,"featured_media":0,"parent":713,"menu_order":13,"comment_status":"closed","ping_status":"closed","template":"","meta":[],"_links":{"self":[{"href":"https:\/\/www2.whoi.edu\/site\/andersonlab\/wp-json\/wp\/v2\/pages\/812"}],"collection":[{"href":"https:\/\/www2.whoi.edu\/site\/andersonlab\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www2.whoi.edu\/site\/andersonlab\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www2.whoi.edu\/site\/andersonlab\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www2.whoi.edu\/site\/andersonlab\/wp-json\/wp\/v2\/comments?post=812"}],"version-history":[{"count":3,"href":"https:\/\/www2.whoi.edu\/site\/andersonlab\/wp-json\/wp\/v2\/pages\/812\/revisions"}],"predecessor-version":[{"id":1531,"href":"https:\/\/www2.whoi.edu\/site\/andersonlab\/wp-json\/wp\/v2\/pages\/812\/revisions\/1531"}],"up":[{"embeddable":true,"href":"https:\/\/www2.whoi.edu\/site\/andersonlab\/wp-json\/wp\/v2\/pages\/713"}],"wp:attachment":[{"href":"https:\/\/www2.whoi.edu\/site\/andersonlab\/wp-json\/wp\/v2\/media?parent=812"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}