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We need radical change in how we produce and consume food

, Sheffield S10 2TN , UK 1 Peter Horton Agri-food system; Sustainability; Policy 1 Introduction Recently, two papers were published that, in different ways, illustrate the huge challenges we face in

Optimization of light harvesting and photoprotection: molecular mechanisms and physiological consequences

The distinctive lateral organization of the protein complexes in the thylakoid membrane investigated by Jan Anderson and co-workers is dependent on the balance of various attractive and repulsive forces. Modulation of these forces allows critical physiological regulation of photosynthesis that provides efficient light-harvesting in limiting light but dissipation of excess...

An agenda for integrated system-wide interdisciplinary agri-food research

, Sheffield , UK 2 Grantham Centre for Sustainable Futures, University of Sheffield , Sheffield , UK 3 Peter Horton 4 Advanced Resource Efficiency Centre, University of Sheffield , Sheffield , UK 5 School of

Towards elucidation of dynamic structural changes of plant thylakoid architecture

, Eva-Mari Aro, Jack Barrett, Jim Barber, Keith Boardman, Olle Bjo rkman, Jan Brown, Zhong-Xi Chu, Peter Dunkley, John Evans, Robin Hill, Roger Hillier, Peter Horton, Vaughn Hurry, David Goodchild, Eun-Ha

Molecular design of the photosystem II light-harvesting antenna: photosynthesis and photoprotection

Peter Horton 0 Alexander Ruban 0 0 Department of Molecular Biology and Biotechnology, University of Sheffield, Western Bank , Sheffield S10 2TN, UK The photosystem II (PSII) light-harvesting system

Prospects for crop improvement through the genetic manipulation of photosynthesis: morphological and biochemical aspects of light capture

Peter Horton 0 0 Robert Hill Institute for Photosynthesis Research, Department of Molecular Biology and Biotechnology, University of Sheffield , Western Bank, Sheffield S10 2TN , UK The prospects

Impact of chlororespiration on non-photochemical quenching of chlorophyll fluorescence and on the regulation of the diadinoxanthin cycle in the diatom Thalassiosira pseudonana

In diatoms, metabolic activity during long dark periods leads to a chlororespiratory electron flow, which is accompanied by the build-up of a proton gradient strong enough to activate the diadinoxanthin (Ddx) de-epoxidation reaction of the Ddx cycle. In the present study, the impact of chlororespiration on non-photochemical quenching (NPQ) of chlorophyll fluorescence and the...

Differential adaptation of two varieties of common bean to abiotic stress: II. Acclimation of photosynthesis

The photosynthetic characteristics of two contrasting varieties of common bean (Phaseolus vulgaris) have been determined. These varieties, Arroz and Orfeo, differ in their productivity under stress conditions, resistance to drought stress, and have distinctly different stomatal behaviour. When grown under conditions of high irradiance and high temperature, both varieties...

Are there associations between grain‐filling rate and photosynthesis in the flag leaves of field‐grown rice?

Rate of grain filling in terms of dry mass accumulated per panicle per day was measured in field‐grown rice in the dry season in the Philippines and compared to rates of light‐saturated photosynthesis per unit leaf area (Pmax) measured at 350 µl l–1 CO2 for 21 d after flowering. Five new plant type (tropical japonica) varieties (NPT) and one indica variety (IR72) were used and...

Linking drought‐resistance mechanisms to drought avoidance in upland rice using a QTL approach: progress and new opportunities to integrate stomatal and mesophyll responses

The advent of saturated molecular maps promised rapid progress towards the improvement of crops for genetically complex traits like drought resistance via analysis of quantitative trait loci (QTL). Progress with the identification of QTLs for drought resistance‐related traits in rice is summarized here with the emphasis on a mapping population of a cross between drought‐resistant...

Differential adaptation of two varieties of common bean to abiotic stress: I. Effects of drought on yield and photosynthesis

The yield of 24 commercial varieties and accessions of common bean (Phaseolus vulgaris) has been determined at different sites in Chile and Bolivia. Statistical analysis was performed in order to characterize whether a particular variety was more or less stable in yield under different environmental conditions. Amongst these, two varieties have been identified for more detailed...