A roadmap for research on crassulacean acid metabolism (CAM) to enhance sustainable food and bioenergy production in a hotter, drier world

Yang, Xiaohan , Cushman, John C., Borland, Anne M., Edwards, Erika J., Wullschleger, Stan D., Tuskan, Gerald A., Owen, Nick A., Griffiths, Howard, Smith, J. Andrew C., De Paoli, Henrique C., Weston, David J., Cottingham, Robert, Hartwell, James, Davis, Sarah C., Silvera, Katia, Ming, Ray, Schlauch, Karen, Abraham, Paul, Stewart, Ryan J., Guo, Hao-Bo, Albion, Rebecca, Ha, Jungmin, Lim, Sung Don, Wone, Bernard W.M., Yim, Won Cheol, Garcia, Travis, Mayer, Jesse A., Petereit, Juli, Nair, Sujithkumar S., Casey, Erin, Hettich, Robert L., Ceusters, Johan, Ranjan, Priya, Palla, Kaitlin J., Yin, Hengfu, Reyes-García, Casandra, Andrade, José Luis, Freschi, Luciano, Beltrán, Juan D., Dever, Louisa V., Boxall, Susanna F., Waller, Jade, Davies, Jack, Bupphada, Phaitun, Kadu, Nirja, Winter, Klaus, Sage, Rowan F., Aguilar, Cristobal N., Schmutz, Jeremy, Jenkins, Jerry, and Holtum, Joseph A.M. (2015) A roadmap for research on crassulacean acid metabolism (CAM) to enhance sustainable food and bioenergy production in a hotter, drier world. New Phytologist, 207 (3). pp. 491-504.

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Abstract

Crassulacean acid metabolism (CAM) is a specialized mode of photosynthesis that features nocturnal CO(2) uptake, facilitates increased water-use efficiency (WUE), and enables CAM plants to inhabit water-limited environments such as semi-arid deserts or seasonally dry forests. Human population growth and global climate change now present challenges for agricultural production systems to increase food, feed, forage, fiber, and fuel production. One approach to meet these challenges is to increase reliance on CAM crops, such as Agave and Opuntia, for biomass production on semi-arid, abandoned, marginal, or degraded agricultural lands. Major research efforts are now underway to assess the productivity of CAM crop species and to harness the WUE of CAM by engineering this pathway into existing food, feed, and bioenergy crops. An improved understanding of CAM has potential for high returns on research investment. To exploit the potential of CAM crops and CAM bioengineering, it will be necessary to elucidate the evolution, genomic features, and regulatory mechanisms of CAM. Field trials and predictive models will be required to assess the productivity of CAM crops, while new synthetic biology approaches need to be developed for CAM engineering. Infrastructure will be needed for CAM model systems, field trials, mutant collections, and data management.

Item ID: 37615
Item Type: Article (Research - C1)
ISSN: 1469-8137
Keywords: bionenergy; crassulacean acid metabolism (CAM); dought; genomics; photosynthesis; roadmap; synthetic biology; water-use efficiency (WUE)
Date Deposited: 12 Aug 2015 01:31
FoR Codes: 06 BIOLOGICAL SCIENCES > 0607 Plant Biology > 060702 Plant Cell and Molecular Biology @ 50%
06 BIOLOGICAL SCIENCES > 0607 Plant Biology > 060705 Plant Physiology @ 50%
SEO Codes: 97 EXPANDING KNOWLEDGE > 970106 Expanding Knowledge in the Biological Sciences @ 40%
82 PLANT PRODUCTION AND PLANT PRIMARY PRODUCTS > 8203 Industrial Crops > 820399 Industrial Crops not elsewhere classified @ 30%
85 ENERGY > 8505 Renewable Energy > 850501 Biofuel (Biomass) Energy @ 30%
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