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The Kalanchoe genome provides insights into convergent evolution and building blocks of crassulacean acid metabolism
Author
Yang, XiaohanHu, Rongbin
Yin, Hengfu
Jenkins, Jerry
Shu, Shengqiang
Tang, Haibao
Liu, Degao
Weighill, Deborah A..
Yim, Won C.
Ha, Jungmin
Heyduk, Karolina
Goodstein, David M.
Guo, Hao-Bo
Moseley, Robert C.
Fitzek, Elisabeth
Jawdy, Sara
Zhang, Zhihao
Xie, Meng
Hartwell, James
Grimwood, Jane
Abraham, Paul E.
Mewalal, Ritesh
Beltran, Juan D.
Boxall, Susanna F.
Dever, Louisa V.
Palla, Kaitlin J.
Albion, Rebecca L.
Garcia, Travis M.
Mayer, Jesse A.
Lim, Sung D.
Wai, Ching M.
Peluso, Paul
Van Buren, Robert
De Paoli, Henrique C.
Borland, Anne M.
Guo, Hong
Chen, Jin-Gui
Muchero, Wellington
Yin, Yanbin
Jacobson, Daniel A.
Tschaplinski, Timothy J.
Hettich, Robert L.
Ming, Ray
Winter, Klaus
Leebens-Mack, James H.
Smith, J. Andrew C.
Cushman, John C.
Schmutz, Jeremy
Tuskan, Gerald A.
Date
2017Type
ArticleAbstract
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 C-3 photosynthesis. To test this hypothesis, we generate 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 (similar to 260 Mb). Our comparative analyses identify 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-C-3 photosynthesis engineering to enhance wateruse efficiency in crops.
Permanent link
http://hdl.handle.net/11714/5116Additional Information
Journal Title | Nature Communications |
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Rights | Creative Commons Attribution 4.0 International |
Rights Holder | Authors |