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Accumulation of 2-C-methyl-D-erythritol 2,4-cyclodiphosphate in illuminated plant leaves at supraoptimal temperatures reveals a bottleneck of the prokaryotic methylerythritol 4-phosphate pathway of isoprenoid biosynthesis.
Plant Cell Environ. 2009 Jan; 32(1):82-92.PC

Abstract

Metabolic profiling using phosphorus nuclear magnetic resonance ((31)P-NMR) revealed that the leaves of different herbs and trees accumulate 2-C-methyl-D-erythritol 2,4-cyclodiphosphate (MEcDP), an intermediate of the methylerythritol 4-phosphate (MEP) pathway, during bright and hot days. In spinach (Spinacia oleracea L.) leaves, its accumulation closely depended on irradiance and temperature. MEcDP was the only (31)P-NMR-detected MEP pathway intermediate. It remained in chloroplasts and was a sink for phosphate. The accumulation of MEcDP suggested that its conversion rate into 4-hydroxy-3-methylbut-2-enyl diphosphate, catalysed by (E)-4-hydroxy-3-methylbut-2-enyl diphosphate synthase (GcpE), was limiting under oxidative stress. Indeed, O(2) and ROS produced by photosynthesis damage this O(2)-hypersensitive [4Fe-4S]-protein. Nevertheless, as isoprenoid synthesis was not inhibited, damages were supposed to be continuously repaired. On the contrary, in the presence of cadmium that reinforced MEcDP accumulation, the MEP pathway was blocked. In vitro studies showed that Cd(2+) does not react directly with fully assembled GcpE, but interferes with its reconstitution from recombinant GcpE apoprotein and prosthetic group. Our results suggest that MEcDP accumulation in leaves may originate from both GcpE sensitivity to oxidative environment and limitations of its repair. We propose a model wherein GcpE turnover represents a bottleneck of the MEP pathway in plant leaves simultaneously exposed to high irradiance and hot temperature.

Authors+Show Affiliations

Laboratoire de Physiologie Cellulaire Végétale, Unité Mixte de Recherche, institut de Recherche en Technologies et Sciences pour le Vivant, CEA, Grenoble, France.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

19021881

Citation

Rivasseau, Corinne, et al. "Accumulation of 2-C-methyl-D-erythritol 2,4-cyclodiphosphate in Illuminated Plant Leaves at Supraoptimal Temperatures Reveals a Bottleneck of the Prokaryotic Methylerythritol 4-phosphate Pathway of Isoprenoid Biosynthesis." Plant, Cell & Environment, vol. 32, no. 1, 2009, pp. 82-92.
Rivasseau C, Seemann M, Boisson AM, et al. Accumulation of 2-C-methyl-D-erythritol 2,4-cyclodiphosphate in illuminated plant leaves at supraoptimal temperatures reveals a bottleneck of the prokaryotic methylerythritol 4-phosphate pathway of isoprenoid biosynthesis. Plant Cell Environ. 2009;32(1):82-92.
Rivasseau, C., Seemann, M., Boisson, A. M., Streb, P., Gout, E., Douce, R., Rohmer, M., & Bligny, R. (2009). Accumulation of 2-C-methyl-D-erythritol 2,4-cyclodiphosphate in illuminated plant leaves at supraoptimal temperatures reveals a bottleneck of the prokaryotic methylerythritol 4-phosphate pathway of isoprenoid biosynthesis. Plant, Cell & Environment, 32(1), 82-92. https://doi.org/10.1111/j.1365-3040.2008.01903.x
Rivasseau C, et al. Accumulation of 2-C-methyl-D-erythritol 2,4-cyclodiphosphate in Illuminated Plant Leaves at Supraoptimal Temperatures Reveals a Bottleneck of the Prokaryotic Methylerythritol 4-phosphate Pathway of Isoprenoid Biosynthesis. Plant Cell Environ. 2009;32(1):82-92. PubMed PMID: 19021881.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Accumulation of 2-C-methyl-D-erythritol 2,4-cyclodiphosphate in illuminated plant leaves at supraoptimal temperatures reveals a bottleneck of the prokaryotic methylerythritol 4-phosphate pathway of isoprenoid biosynthesis. AU - Rivasseau,Corinne, AU - Seemann,Myriam, AU - Boisson,Anne-Marie, AU - Streb,Peter, AU - Gout,Elisabeth, AU - Douce,Roland, AU - Rohmer,Michel, AU - Bligny,Richard, Y1 - 2008/11/10/ PY - 2008/11/22/entrez PY - 2008/11/22/pubmed PY - 2009/1/1/medline SP - 82 EP - 92 JF - Plant, cell & environment JO - Plant Cell Environ VL - 32 IS - 1 N2 - Metabolic profiling using phosphorus nuclear magnetic resonance ((31)P-NMR) revealed that the leaves of different herbs and trees accumulate 2-C-methyl-D-erythritol 2,4-cyclodiphosphate (MEcDP), an intermediate of the methylerythritol 4-phosphate (MEP) pathway, during bright and hot days. In spinach (Spinacia oleracea L.) leaves, its accumulation closely depended on irradiance and temperature. MEcDP was the only (31)P-NMR-detected MEP pathway intermediate. It remained in chloroplasts and was a sink for phosphate. The accumulation of MEcDP suggested that its conversion rate into 4-hydroxy-3-methylbut-2-enyl diphosphate, catalysed by (E)-4-hydroxy-3-methylbut-2-enyl diphosphate synthase (GcpE), was limiting under oxidative stress. Indeed, O(2) and ROS produced by photosynthesis damage this O(2)-hypersensitive [4Fe-4S]-protein. Nevertheless, as isoprenoid synthesis was not inhibited, damages were supposed to be continuously repaired. On the contrary, in the presence of cadmium that reinforced MEcDP accumulation, the MEP pathway was blocked. In vitro studies showed that Cd(2+) does not react directly with fully assembled GcpE, but interferes with its reconstitution from recombinant GcpE apoprotein and prosthetic group. Our results suggest that MEcDP accumulation in leaves may originate from both GcpE sensitivity to oxidative environment and limitations of its repair. We propose a model wherein GcpE turnover represents a bottleneck of the MEP pathway in plant leaves simultaneously exposed to high irradiance and hot temperature. SN - 1365-3040 UR - https://www.unboundmedicine.com/medline/citation/19021881/Accumulation_of_2_C_methyl_D_erythritol_24_cyclodiphosphate_in_illuminated_plant_leaves_at_supraoptimal_temperatures_reveals_a_bottleneck_of_the_prokaryotic_methylerythritol_4_phosphate_pathway_of_isoprenoid_biosynthesis_ L2 - https://doi.org/10.1111/j.1365-3040.2008.01903.x DB - PRIME DP - Unbound Medicine ER -