Adaptation of light-harvesting functions of unicellular green algae to different light qualities

Ueno, Yoshifumi; Aikawa, Shimpei; Kondo, Akihiko; Akimoto, Seiji

doi:10.1007/s11120-018-0523-y

Cited by 34 publications

(19 citation statements)

References 47 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The estimated spillover ratio did not show large changes under the different conditions (Table S2), suggesting that the balance of the energy distribution between the two photosystems was regulated without modification of the direct PSI-20 PSII interaction. This behavior was also observed in the green algae Chlamydomonas reinhardtii and Chlorella variabilis (Ueno et al 2018), but not in Arabidopsis (Yokono et al 2015).…”

Section: Time-resolved Fluorescence Of the Psi-psii Megacomplexmentioning

confidence: 86%

Formation of a PSI–PSII megacomplex containing LHCSR and PsbS in the moss Physcomitrella patens

et al. 2019

Self Cite

View full text Add to dashboard Cite

Mosses are one of the earliest land plants that diverged from freshwater green algae. They are considered to have acquired a higher capacity for thermal energy dissipation to cope with dynamically changing solar irradiance by utilizing both the "algal-type" light-harvesting complex stress-related (LHCSR)-dependent and the "plant-type" PsbS-dependent mechanisms. It is hypothesized that the formation of photosystem (PS) I and II megacomplex is another mechanism to protect photosynthetic machinery from strong irradiance. Herein, we describe the analysis of the PSI-PSII megacomplex from the model moss, Physcomitrella patens, which was resolved using large-pore clear-native polyacrylamide gel electrophoresis (lpCN-PAGE). The similarity in the migration distance of the Physcomitrella PSI-PSII megacomplex to the Arabidopsis megacomplex shown during lpCN-PAGE suggested that the Physcomitrella PSI-PSII and Arabidopsis megacomplexes have similar structures. Time-resolved chlorophyll fluorescence measurements show that excitation energy was rapidly and efficiently transferred from PSII to PSI, providing evidence of an ordered association of the two photosystems. We also found that LHCSR and PsbS co-migrated with the Physcomitrella PSI-PSII megacomplex. The megacomplex showed pH-dependent chlorophyll fluorescence quenching, which may have been induced by LHCSR and/or PsbS proteins with the collaboration of zeaxanthin. We discuss the mechanism that regulates the energy distribution balance between two photosystems in Physcomitrella.

show abstract

Section: Time-resolved Fluorescence Of the Psi-psii Megacomplexmentioning

confidence: 86%

Formation of a PSI–PSII megacomplex containing LHCSR and PsbS in the moss Physcomitrella patens

et al. 2019

Self Cite

View full text Add to dashboard Cite

show abstract

“…PBF, as a far-red emission material, could transfer the energy to C. pyrenoidosa, and this energy was better matched to PSI that prefers far-red light than to PSII that prefers blue light. Therefore, after C. pyrenoidosa were incubated with PBF, PSI became more excited (36). The activity of PSII was unable to offer enough electrons for PSI.…”

Section: State Transition Regulation Pbf Synergistical Improvement Ofmentioning

confidence: 99%

Artificial regulation of state transition for augmenting plant photosynthesis using synthetic light-harvesting polymer materials

et al. 2020

View full text Add to dashboard Cite

Artificial regulation of state transition between photosystem I (PSI) and PSII will be a smart and promising way to improve efficiency of natural photosynthesis. In this work, we found that a synthetic light-harvesting polymer [poly(boron-dipyrromethene-co-fluorene) (PBF)] with green light absorption and far-red emission could improve PSI activity of algae Chlorella pyrenoidosa, followed by further upgrading PSII activity to augment natural photosynthesis. For light-dependent reactions, PBF accelerated photosynthetic electron transfer, and the productions of oxygen, ATP and NADPH were increased by 120, 97, and 76%, respectively. For light-independent reactions, the RuBisCO activity was enhanced by 1.5-fold, while the expression levels of rbcL encoding RuBisCO and prk encoding phosphoribulokinase were up-regulated by 2.6 and 1.5-fold, respectively. Furthermore, PBF could be absorbed by the Arabidopsis thaliana to speed up cell mitosis and enhance photosynthesis. By improving the efficiency of natural photosynthesis, synthetic light-harvesting polymer materials show promising potential applications for biofuel production.

show abstract

“…There was no signi cance or advantage in increasing the yield of fatty acids among the groups GL and WL. The process through which energy and information regulation played the main role should be determined by determining the key enzyme that regulates information and the chlorophyll light energy quenching experimental results of photosynthesis [42,43].…”

Section: Effects Of Various Light Qualities On Fatty Acid Pro Les Of C Closteriummentioning

confidence: 99%

Effects of light qualities on growth, lipid contents and fatty acids profiles of Cylindrotheca closterium

Zhang

Peng

Yong

et al. 2021

Preprint

View full text Add to dashboard Cite

Background Marine diatoms were considered as a promising alternative to microbial resources for the development of biofuels, food additives, medicines and chemical materials. Light of wavelength is a principal element that can easily be controlled in microalgal scale-culture and influence the growth, pigment composition, and lipids accumulation of algal cells. With the increasing implementation of light-emitting diodes (LEDs) in microalgal production systems (photobioreactors), a measure of light quality controlled by LED could be suitable to improve microalgal yields. Results In this study, Cylindrotheca Closterium, a widely used diatom, influenced by five light quality (white, red, blue, green and yellow light) was tested for its effects of growth rates, chlorophylls contents, total lipids contents and fatty acids compositions. The growth and chlorophyll experiments also showed that the green and yellow light significantly improve the growth rates and chlorophylls contents than other groups (P < 0.05). The group white light showed the greatest increases in total lipid contents of C. closterium (P < 0.05). The group blue light had the highest polyunsaturated fatty acids (PUFAs) proportion (P < 0.05), while the group white showed the lowest PUFAs and the highest saturated fatty acids (SFAs) and monounsaturated fatty acids (MUFAs) proportions (P < 0.05). The proportions of SFAs and MUFAs were negatively correlated with growth, chlorophylls, and lipids. And the proportion of PUFAs and n-3 PUFA was positively correlated with growth chlorophylls, and lipids. Principal component analysis showed that the fatty acid composition differed among light quality groups. Conclusion In summary, green light and yellow light were conductive to boosting the growth and chlorophylls accumulation of C. closterium. White light increased total lipid yields, while blue light was superior in increasing the production of unsaturated fatty acids, especially on the timnodonic acid (EPA). The application of two-step methods to increase the production of biomass and fatty acids is an effective measure for the cultivation of C. closterium; green light is used to increase the growth, followed by white light cultivation to improve total lipids or blue light to enhance the proportion of PUFAs of C. closterium.

show abstract

Adaptation of light-harvesting functions of unicellular green algae to different light qualities

Cited by 34 publications

References 47 publications

Formation of a PSI–PSII megacomplex containing LHCSR and PsbS in the moss Physcomitrella patens

Formation of a PSI–PSII megacomplex containing LHCSR and PsbS in the moss Physcomitrella patens

Artificial regulation of state transition for augmenting plant photosynthesis using synthetic light-harvesting polymer materials

Effects of light qualities on growth, lipid contents and fatty acids profiles of Cylindrotheca closterium

Contact Info

Product

Resources

About