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Title: Orchestration of carbohydrate processing for crassulacean acid metabolism

Journal Article · · Current Opinion in Plant Biology
 [1];  [2];  [3];  [4]
  1. Newcastle Univ., Newcastle upon Tyne (United Kingdom). School of Biology; Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Biosciences Division
  2. Univ. of Tennessee, Knoxville, TN (United States). Dept. of Biochemistry & Cellular and Molecular Biology
  3. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Biosciences Division
  4. Univ. of Nevada, Reno, NV (United States). Dept. of Biochemistry and Molecular Biology

The production of phosphoenolpyruvate as a substrate for nocturnal CO2 uptake represents a significant sink for carbohydrate in CAM plants which has to be balanced with the provisioning of carbohydrate for growth and maintenance. In starch-storing CAM species, diversification in chloroplast metabolite transporters, and the deployment of both phosphorolytic and hydrolytic routes of starch degradation accommodate a division of labour in directing C-skeletons towards nocturnal carboxylation or production of sucrose for growth. In soluble-sugar storing CAM plants, the vacuole plays a central role in managing carbon homeostasis. The molecular identities of various types of vacuolar sugar transporters have only been identified for C3 species within the last 10 years. In conclusion, the recent availability of CAM genomes enables the identification of putative orthologues of vacuolar sugar transporters which represent strategic targets for orchestrating the diel provisioning of substrate for nocturnal carboxylation and growth.

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
Grant/Contract Number:
AC05-00OR22725; SC0008834
OSTI ID:
1355885
Alternate ID(s):
OSTI ID: 1357688
Journal Information:
Current Opinion in Plant Biology, Vol. 31, Issue C; ISSN 1369-5266
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 29 works
Citation information provided by
Web of Science

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Cited By (10)

Computational analysis of the productivity potential of CAM journal February 2018
Transcript and metabolite changes during the early phase of abscisic acid-mediated induction of crassulacean acid metabolism in Talinum triangulare journal April 2019
CRISPR/Cas9-mediated targeted mutagenesis for functional genomics research of crassulacean acid metabolism plants journal September 2019
The Kalanchoë genome provides insights into convergent evolution and building blocks of crassulacean acid metabolism journal December 2017
Hierarchical clustering reveals unique features in the diel dynamics of metabolites in the CAM orchid Phalaenopsis journal April 2019
Drought survival strategies of juvenile bromeliads of Alcantarea imperialis (Carrière) Harms journal August 2019
Maltose Processing and Not β-Amylase Activity Curtails Hydrolytic Starch Degradation in the CAM Orchid Phalaenopsis journal November 2019
Altered Gene Regulatory Networks Are Associated With the Transition From C3 to Crassulacean Acid Metabolism in Erycina (Oncidiinae: Orchidaceae) journal January 2019
C 4 and crassulacean acid metabolism within a single leaf: deciphering key components behind a rare photosynthetic adaptation journal November 2019
Shared expression of crassulacean acid metabolism (CAM) genes pre-dates the origin of CAM in the genus Yucca journal April 2019