Here comes the sun: How optimization of photosynthetic light reactions can boost crop yields

Walter, Julia; Kromdijk, Johannes

doi:10.1111/jipb.13206

Cited by 33 publications

(20 citation statements)

References 352 publications

(433 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This is because photosynthesis of most leaves at most hours in a canopy, even on sunny days, are light subsaturated (electron transport limited). This is corroborated by observations of Qu et al (2017) and Taniyoshi et al (2020) on the importance of A low and supports views on optimizing photosynthetic light reactions ( Yin and Struik, 2021 ; Walter and Kromdijk, 2022 ). Thus, improving photosynthesis is not merely a matter of increasing A max but should improve multiple parameters synergistically, allowing for high canopy photosynthesis and duration.…”

Section: Discussionsupporting

confidence: 85%

See 1 more Smart Citation

A model-guided holistic review of exploiting natural variation of photosynthesis traits in crop improvement

Yin

Dingkuhn

et al. 2022

Journal of Experimental Botany

View full text Add to dashboard Cite

Breeding for improved leaf photosynthesis is considered as a viable approach to increase crop yield. Whether it should be improved in combination with other traits has not been assessed critically. Based on the quantitative crop model GECROS that inter-connects various traits to crop productivity, we review natural variation in relevant traits, from biochemical aspects of leaf photosynthesis to morpho-physiological crop characteristics. While large phenotypic variations (sometimes >two-fold) for leaf photosynthesis and its underlying biochemical parameters were reported, few quantitative trait loci (QTL) were identified, accounting for a small percentage of phenotypic variation. More QTL were reported for sink size (that feeds back on photosynthesis) or morpho-physiological traits (that affect canopy productivity and duration), together explaining a much greater percentage of their phenotypic variation. Traits for both photosynthetic rate and sustaining it during grain filling were strongly related to nitrogen-related traits. Much of the molecular basis of known photosynthesis-QTL thus resides in genes controlling photosynthesis indirectly. Simulation using GECROS demonstrated the overwhelming importance of electron transport parameters, compared to the maximum Rubisco activity that largely determines the commonly-studied light-saturated photosynthetic rate. Exploiting photosynthetic natural variation might significantly improve crop yield if nitrogen uptake, sink capacity and other morpho-physiological traits are co-selected synergistically.

show abstract

Section: Discussionsupporting

confidence: 85%

“…Photosynthesis scholars argue that this improvement most probably has to come from an enhanced photosynthesis (e.g. Long et al , 2015 ; Ort et al , 2015 ; Furbank et al , 2020 ; Walter and Kromdijk, 2022 ).…”

Section: Introductionmentioning

confidence: 99%

A model-guided holistic review of exploiting natural variation of photosynthesis traits in crop improvement

Yin

Dingkuhn

et al. 2022

Journal of Experimental Botany

View full text Add to dashboard Cite

show abstract

“…Improving photosynthesis is one of the promising routes to increase biomass and yield of crop plants (Walter and Kromdijk, 2022). However, better understanding of the mechanisms and consequences of increasing efficiency of photosynthetic reactions in different model species is required to accelerate implementation of these strategies into crops.…”

Section: Discussionmentioning

confidence: 99%

Rieske FeS overexpression in tobacco provides increased abundance and activity of Cytochromeb₆f

Heyno

Ermakova

López-Calcagno

et al. 2022

Preprint

View full text Add to dashboard Cite

Photosynthesis is fundamental for plant growth and yield. The Cytochrome b6f complex catalyses a rate-limiting step in thylakoid electron transport and therefore represents an important point of regulation of photosynthesis. Here we show that overexpression of a single core subunit of Cytochrome b6f, the Rieske FeS protein, led to up to a 40% increase in the abundance of the complex in Nicotiana tabacum (tobacco) and was accompanied by an enhanced in vitro Cytochrome f activity, indicating a full functionality of the complex. Analysis of transgenic plants overexpressing Rieske FeS by the light-induced fluorescence transients technique revealed a more oxidised primary quinone acceptor of Photosystem II (QA) and plastoquinone pool and a faster electron transport from the plastoquinone pool to Photosystem I upon changes in irradiance, compared to control plants. A faster establishing of qE, the energy-dependent component of non-photochemical quenching, in transgenic plants suggested a more rapid build-up of the transmembrane proton gradient, also supporting the increased in vivo Cytochrome b6f activity. However, there was no consistent increase in steady-state rates of electron transport or CO2 assimilation in plants overexpressing Rieske FeS grown in either laboratory conditions or in field trials, suggesting that the in vivo activity of the complex was only transiently increased upon changes in irradiance. Our results show that overexpression of Rieske FeS in tobacco enhances abundance of functional Cytochrome b6f and electron transport capacity and may have a potential to increase plant productivity if combined with other traits.

show abstract

“…Improving photosynthesis is one of the promising routes to increase the biomass and yield of crop plants (Walter & Kromdijk, 2022 ). However, better understanding of the mechanisms and consequences of increasing the efficiency of photosynthetic reactions in different model species is required to accelerate the implementation of these strategies into crops.…”

Section: Discussionmentioning

confidence: 99%

Rieske FeS overexpression in tobacco provides increased abundance and activity of cytochrome b₆f

Heyno

Ermakova

López-Calcagno

et al. 2022

Physiologia Plantarum

View full text Add to dashboard Cite

Photosynthesis is fundamental for plant growth and yield. The cytochrome b6f complex catalyses a rate‐limiting step in thylakoid electron transport and therefore represents an important point of regulation of photosynthesis. Here we show that overexpression of a single core subunit of cytochrome b6f, the Rieske FeS protein, led to up to a 40% increase in the abundance of the complex in Nicotiana tabacum (tobacco) and was accompanied by an enhanced in vitro cytochrome f activity, indicating a full functionality of the complex. Analysis of transgenic plants overexpressing Rieske FeS by the light‐induced fluorescence transients technique revealed a more oxidised primary quinone acceptor of photosystem II (QA) and plastoquinone pool and faster electron transport from the plastoquinone pool to photosystem I upon changes in irradiance, compared to control plants. A faster establishment of qE, the energy‐dependent component of nonphotochemical quenching, in transgenic plants suggests a more rapid buildup of the transmembrane proton gradient, also supporting the increased in vivo cytochrome b6f activity. However, there was no consistent increase in steady‐state rates of electron transport or CO2 assimilation in plants overexpressing Rieske FeS grown in either laboratory conditions or field trials, suggesting that the in vivo activity of the complex was only transiently increased upon changes in irradiance. Our results show that overexpression of Rieske FeS in tobacco enhances the abundance of functional cytochrome b6f and may have the potential to increase plant productivity if combined with other traits.

show abstract

Here comes the sun: How optimization of photosynthetic light reactions can boost crop yields

Cited by 33 publications

References 352 publications

A model-guided holistic review of exploiting natural variation of photosynthesis traits in crop improvement

A model-guided holistic review of exploiting natural variation of photosynthesis traits in crop improvement

Rieske FeS overexpression in tobacco provides increased abundance and activity of Cytochromeb₆f

Rieske FeS overexpression in tobacco provides increased abundance and activity of cytochrome b₆f

Contact Info

Product

Resources

About

Here comes the sun: How optimization of photosynthetic light reactions can boost crop yields

Cited by 33 publications

References 352 publications

A model-guided holistic review of exploiting natural variation of photosynthesis traits in crop improvement

A model-guided holistic review of exploiting natural variation of photosynthesis traits in crop improvement

Rieske FeS overexpression in tobacco provides increased abundance and activity of Cytochromeb6f

Rieske FeS overexpression in tobacco provides increased abundance and activity of cytochrome b6f

Contact Info

Product

Resources

About

Rieske FeS overexpression in tobacco provides increased abundance and activity of Cytochromeb₆f

Rieske FeS overexpression in tobacco provides increased abundance and activity of cytochrome b₆f