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Auteur Florian Jupe |
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Genome and time-of-day transcriptome of Wolffia australiana link morphological minimization with gene loss and less growth control / Todd P. Michael in Genome, 31 (2) (2021)
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Titre : Genome and time-of-day transcriptome of Wolffia australiana link morphological minimization with gene loss and less growth control Type de document : Imprimé Auteurs : Todd P. Michael ; Evan Ernst ; Nolan Hartwick ; Philomena Chu ; Douglas Bryant ; Sarah Gilbert ; Stefan Ortleb ; Erin L. Baggs ; K. Sowjanya Sree ; Klaus J. Appenroth ; Joerg Fuchs ; Florian Jupe ; Justin P. Sandoval ; Ksenia V. Krasileva ; Ljudmylla Borisjuk ; Todd C. Mockler ; Joseph R. Ecker ; Robert A. Martienssen ; Eric Lam Année de publication : 2021 Article en page(s) : 225–238 Langues : Anglais (eng) Catégories : [CBNPMP-Thèmes] Plantes subspontanées, naturalisées, envahissantes Mots-clés : Wolffia australianan Link Résumé : Rootless plants in the genus Wolffia are some of the fastest growing known plants on Earth. Wolffia have a reduced body plan, primarily multiplying through a budding type of asexual reproduction. Here, we generated draft reference genomes for Wolffia australiana (Benth.) Hartog & Plas, which has the smallest genome size in the genus at 357 Mb and has a reduced set of predicted protein-coding genes at about 15,000. Comparison between multiple high-quality draft genome sequences from W. australiana clones confirmed loss of several hundred genes that are highly conserved among flowering plants, including genes involved in root developmental and light signaling pathways. Wolffia has also lost most of the conserved nucleotide-binding leucine-rich repeat (NLR) genes that are known to be involved in innate immunity, as well as those involved in terpene biosynthesis, while having a significant overrepresentation of genes in the sphingolipid pathways that may signify an alternative defense system. Diurnal expression analysis revealed that only 13% of Wolffia genes are expressed in a time-of-day (TOD) fashion, which is less than the typical ∼40% found in several model plants under the same condition. In contrast to the model plants Arabidopsis and rice, many of the pathways associated with multicellular and developmental processes are not under TOD control in W. australiana, where genes that cycle the conditions tested predominantly have carbon processing and chloroplast-related functions. The Wolffia genome and TOD expression data set thus provide insight into the interplay between a streamlined plant body plan and optimized growth. Lien pérenne : DOI : 10.1101/gr.266429.120 Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=152464
in Genome > 31 (2) (2021) . - 225–238Michael, TP., Ernst, E., Hartwick, N., Chu, P., Bryant, D., Gilbert, S., Ortleb, S., Baggs, EL., Sowjanya Sree, K., Appenroth, KJ., Fuchs, J., Jupe, F., Sandoval, JP., Krasileva, KV., Borisjuk, L., Mockler, TC., Ecker, JR., Martienssen, RA., Lam, E. 2021. Genome and time-of-day transcriptome of Wolffia australiana link morphological minimization with gene loss and less growth control. Genome, 31(2): 225–238.Documents numériques
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