Darveau 2013 Abstract MiP2013: Difference between revisions
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{{Abstract | {{Abstract | ||
|title=Darveau | |title=Darveau CA, Teulier L, Weber JM (2013) Diversity and evolution of mitochondrial metabolism: Proline as a metabolic reward for pollinators. Mitochondr Physiol Network 18.08. | ||
|authors=Darveau | |authors=Darveau CA, Teulier L, Weber JM | ||
|year=2013 | |year=2013 | ||
|event=MiP2013 | |event=MiP2013 | ||
|abstract= | |abstract=Insect flight is the most energy demanding activity performed by animals. Flight muscle tissue is extremely diverse, ranging in contraction frequency depending on the species and lifestyle, to metabolic fuels used as a function of metabolic flux rate and ecological opportunities. Pollinators such as bees have developed an intimate relationship with flowering plants and coevolved. Bee flight requires high metabolic rate to perform maneuvering flight, and are thought to have become specialized in using carbohydrate as sole metabolic fuel. Plant physiologists have recently documented that a considerable amount of energy is invested in producing the amino acid proline in plant nectar. Yet, the most common bee model species, the honeybee, does not appear to be capable of oxidizing proline as muscle metabolic fuel. Using permeabilized insect flight muscle fibers, we investigated the diversity and evolution of proline as a metabolic fuel in bees and wasps. I will show how the honeybee is not representative of hymenopterans as a group, as it cannot oxidize proline while its sister species, a bumblebee, and a representative of their ancestral group, a wasp, can greatly increase muscle respiration using proline. We further described muscle metabolic phenotype of the bumblebee and show how proline greatly enhance oxidation of pyruvate. This work illustrates how proline can be used as a metabolic reward for pollinators, and the diversity and evolution of mitochondrial metabolism will be discussed in this context. I will integrate this new aspect of flight muscle metabolism evolution with the work I had started as a graduate student with [[Hochachka P|Peter Hochachka]]. | ||
|mipnetlab=CA Ottawa Darveau CA | |||
}} | |||
{{Labeling | |||
|taxonomic group=Hexapods | |||
|tissues=Skeletal muscle | |||
|preparations=Permeabilized tissue | |||
|couplingstates=OXPHOS | |||
|substratestates=CI | |||
|additional=Bee, Wasp, Proline | |||
}} | }} | ||
__TOC__ | __TOC__ | ||
Revision as of 22:13, 6 July 2013
| Darveau CA, Teulier L, Weber JM (2013) Diversity and evolution of mitochondrial metabolism: Proline as a metabolic reward for pollinators. Mitochondr Physiol Network 18.08. |
Link:
Darveau CA, Teulier L, Weber JM (2013)
Event: MiP2013
Insect flight is the most energy demanding activity performed by animals. Flight muscle tissue is extremely diverse, ranging in contraction frequency depending on the species and lifestyle, to metabolic fuels used as a function of metabolic flux rate and ecological opportunities. Pollinators such as bees have developed an intimate relationship with flowering plants and coevolved. Bee flight requires high metabolic rate to perform maneuvering flight, and are thought to have become specialized in using carbohydrate as sole metabolic fuel. Plant physiologists have recently documented that a considerable amount of energy is invested in producing the amino acid proline in plant nectar. Yet, the most common bee model species, the honeybee, does not appear to be capable of oxidizing proline as muscle metabolic fuel. Using permeabilized insect flight muscle fibers, we investigated the diversity and evolution of proline as a metabolic fuel in bees and wasps. I will show how the honeybee is not representative of hymenopterans as a group, as it cannot oxidize proline while its sister species, a bumblebee, and a representative of their ancestral group, a wasp, can greatly increase muscle respiration using proline. We further described muscle metabolic phenotype of the bumblebee and show how proline greatly enhance oxidation of pyruvate. This work illustrates how proline can be used as a metabolic reward for pollinators, and the diversity and evolution of mitochondrial metabolism will be discussed in this context. I will integrate this new aspect of flight muscle metabolism evolution with the work I had started as a graduate student with Peter Hochachka.
• O2k-Network Lab: CA Ottawa Darveau CA
Labels:
Tissue;cell: Skeletal muscle Preparation: Permeabilized tissue
Coupling state: OXPHOS
Bee, Wasp, Proline
Affiliations and author contributions
1 - University of Ottawa, Dept of Biology, 30 Marie Curie, Ottawa, ON, Canada
Email: [email protected]
