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Surveying Rubisco diversity and temperature response to improve crop photosynthetic efficiency.

Orr, D and Alcântara, A and Kapralov, MV and Andralojc, J and Carmo-Silva, E and Parry, MA (2016) Surveying Rubisco diversity and temperature response to improve crop photosynthetic efficiency. Plant Physiol, 171. ISSN 0032-0889

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Abstract

The threat to global food security of stagnating yields and population growth makes increasing crop productivity a critical goal over the coming decades. One key target for improving crop productivity and yields is increasing the efficiency of photosynthesis. Central to photosynthesis is ribulose-1,5-bisphosphate carboxylase/oxygenase, Rubisco, which is a critical but often rate-limiting component. Here we present full Rubisco catalytic properties measured at three temperatures for 75 plants species representing both crops and undomesticated plants from diverse climates. Some newly characterised Rubiscos were naturally 'better' compared to crop enzymes and have the potential to improve crop photosynthetic efficiency. The temperature response of the various catalytic parameters was largely consistent across the diverse range of species, though absolute values showed significant variation in Rubisco catalysis, even between closely related species. An analysis of residue differences amongst the species characterised identified a number of candidate amino acid substitutions that will aid in advancing engineering of improved Rubisco in crop systems. This study provides new insights on the range of Rubisco catalysis and temperature response present in nature, and provides new information to include in models from leaf to canopy and ecosystem scale.

Item Type: Article
Additional Information: This article is an accepted version which will be available in Plant Physiology http://dx.doi.org/10.1104/pp.16.00750
Uncontrolled Keywords: 06 Biological Sciences, 07 Agricultural And Veterinary Sciences
Subjects: Q Science > QH Natural history > QH301 Biology
S Agriculture > S Agriculture (General)
Divisions: Natural Sciences and Psychology
Publisher: Amercian society of plant biologists
Related URLs:
Date Deposited: 08 Jul 2016 09:23
Last Modified: 07 Sep 2017 20:47
DOI or Identification number: 10.1104/pp.16.00750
URI: http://researchonline.ljmu.ac.uk/id/eprint/3862

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