Metabolomics

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224

The Kalanchoe genome provides insights into convergent evolution and building blocks of crassulacean acid metabolism


ABSTRACT: Crassulacean acid metabolism (CAM) is a water-use efficient adaptation of photosynthesis that has evolved independently many times in diverse lineages of flowering plants. We hypothesize that convergent evolution of protein sequence and temporal gene expression underpins the independent emergences of CAM from C3 photosynthesis. To test this hypothesis, we generated a de novo genome assembly and genome-wide transcript expression data for Kalanchoe fedtschenkoi, an obligate CAM species within the core eudicots with a relatively small genome (~260 Mb). Our comparative analyses identified signatures of convergence in protein sequence and re-scheduling of diel transcript expression of genes involved in nocturnal CO2 fixation, stomatal movement, heat tolerance, circadian clock and carbohydrate metabolism in K. fedtschenkoi and other CAM species in comparison with non-CAM species. These findings provide new insights into molecular convergence and building blocks of CAM and will facilitate CAM-into-C3 photosynthesis engineering to enhance water-use efficiency in crops.

INSTRUMENT(S): 5975C Series GC/MSD (Agilent)

SUBMITTER: Nancy Engle  

PROVIDER: MTBLS519 | MetaboLights | 2018-01-09

REPOSITORIES: MetaboLights

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The Kalanchoë genome provides insights into convergent evolution and building blocks of crassulacean acid metabolism.

Yang Xiaohan X   Hu Rongbin R   Yin Hengfu H   Jenkins Jerry J   Shu Shengqiang S   Tang Haibao H   Liu Degao D   Weighill Deborah A DA   Cheol Yim Won W   Ha Jungmin J   Heyduk Karolina K   Goodstein David M DM   Guo Hao-Bo HB   Moseley Robert C RC   Fitzek Elisabeth E   Jawdy Sara S   Zhang Zhihao Z   Xie Meng M   Hartwell James J   Grimwood Jane J   Abraham Paul E PE   Mewalal Ritesh R   Beltrán Juan D JD   Boxall Susanna F SF   Dever Louisa V LV   Palla Kaitlin J KJ   Albion Rebecca R   Garcia Travis T   Mayer Jesse A JA   Don Lim Sung S   Man Wai Ching C   Peluso Paul P   Van Buren Robert R   De Paoli Henrique Cestari HC   Borland Anne M AM   Guo Hong H   Chen Jin-Gui JG   Muchero Wellington W   Yin Yanbin Y   Jacobson Daniel A DA   Tschaplinski Timothy J TJ   Hettich Robert L RL   Ming Ray R   Winter Klaus K   Leebens-Mack James H JH   Smith J Andrew C JAC   Cushman John C JC   Schmutz Jeremy J   Tuskan Gerald A GA  

Nature communications 20171201 1


Crassulacean acid metabolism (CAM) is a water-use efficient adaptation of photosynthesis that has evolved independently many times in diverse lineages of flowering plants. We hypothesize that convergent evolution of protein sequence and temporal gene expression underpins the independent emergences of CAM from C3 photosynthesis. To test this hypothesis, we generate a de novo genome assembly and genome-wide transcript expression data for Kalanchoë fedtschenkoi, an obligate CAM species within the c  ...[more]

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