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RESEARCH ARTICLE   (Open Access)
Contents Vol 6 (1)

An In-Depth Analysis of the Photosynthesis Process, Its Mechanisms, and the Essential Role It Plays in Plant Life and Growth

Ibrahim B. E. El Bashir 1,2, Loiy Elsir Ahmed Hassan 3, Sakina Yagi 1*

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Australian Herbal Insight 6 (1) 1-5 https://doi.org/10.25163/ahi.619960

Submitted: 18 June 2023 Revised: 22 August 2023  Published: 23 August 2023 

Abstract

Background:  Photosynthesis is the fundamental process that enables plants to convert light energy into chemical energy, forming the basis for life on Earth. It plays a critical role in plant growth and sustenance by converting carbon dioxide and water into glucose and oxygen. Methods: This study utilized laboratory experiments to analyze the rate of photosynthesis under varying conditions of light intensity, carbon dioxide concentration, and water availability. Using spectrophotometry and gas chromatography, we measured oxygen output and glucose production under controlled conditions in both C3 and C4 plants. Results: Increased light intensity and carbon dioxide concentration significantly elevated the rate of photosynthesis in both C3 and C4 plants. However, C4 plants displayed a higher photosynthetic efficiency in lower CO2 concentrations compared to C3 plants. Water stress, on the other hand, decreased photosynthesis rates in both plant types, but C4 plants were more resilient under drought conditions. Conclusion: The results confirmed that photosynthesis efficiency depends on multiple environmental factors. C4 plants show more adaptability to lower CO2 levels and drought conditions, making them better suited for growth in challenging climates. These findings can aid agricultural practices in optimizing crop yield and sustainability under climate variability.

Keywords:  Photosynthesis, C3 plants, C4 plants, light intensity, carbon dioxide, water availability, glucose production, oxygen output.

References

Ainsworth, E. A., & Rogers, A. (2007). The response of photosynthesis and stomatal conductance to rising [CO2]: Mechanisms and environmental interactions. *Plant Cell and Environment, 30(3), 258-270. 

Allen, L. H., Jr., et al. (2003). Elevated CO2 increases water-use efficiency by sustaining photosynthesis of C3 plants during drought. New Phytologist  161(1), 173-203. 

Baker, N. R. (2008). Chlorophyll fluorescence: A probe of photosynthesis in vivo. Annual Review of Plant Biology 59, 89-113. 

Barbour, M. M., & Hanson, D. T. (2009). Stable carbon isotopes and water use efficiency in C3 and C4 plants. Functional Plant Biology, 36(2), 111-118. 

Björkman, O. (1972). Responses to different quantum flux densities. In Photophysiology (Vol. 6, pp. 1-44). Academic Press. 

Chaves, M. M., Flexas, J., & Pinheiro, C. (2003). Photosynthesis under drought and salt stress: Regulation mechanisms from whole plant to cell. Annals of Botany, 103(4), 551-560. 

Ehleringer, J. R., & Monson, R. K. (1993). Evolutionary and ecological aspects of photosynthetic pathway variation. Annual Review of Ecology and Systematics, 24, 411-439. 

Farquhar, G. D. (1980). The CO2 concentration and photosynthesis of leaves. Planta, 149(1), 78-90. 

Flexas, J., et al. (2012). Understanding down-regulation of photosynthesis under water stress: Future prospects and searching for physiological tools for irrigation management. Annals of Botany, 105(1), 23-35. 

Foyer, C. H., & Noctor, G. (2011). Ascorbate and glutathione: The heart of the redox hub. Plant Physiology, 155(1), 2-18. 

Ghannoum, O. (2009). C4 photosynthesis and water stress. Annals of Botany, 103(4), 635-644. 

Gifford, R. M. (2004). The global carbon cycle: A viewpoint on the role of photosynthesis. Functional Plant Biology, 31(4), 351-368. 

Grassi, G., & Magnani, F. (2005). Stomatal, mesophyll conductance and biochemical limitations to photosynthesis as affected by drought and leaf ontogeny. Plant Cell and Environment, 28(6), 842-849. 

Hasegawa, P. M., et al. (2000). Plant cellular and molecular responses to high salinity. Annual Review of Plant Biology, 51, 463-499. 

Hikosaka, K., et al. (2006). Leaf photosynthesis in relation to plant growth and ecosystem productivity. Plant and Cell Physiology, 47(7), 1139-1160. 

Kromdijk, J., et al. (2016). Improving photosynthesis and crop productivity by accelerating recovery from photoprotection. Science, 354(6314), 857-861. 

Larkum, A. W. D. (2019). Photosynthesis and the Earth system: Interactions between the biosphere and the atmosphere. Photosynthesis Research, 140, 1-2. 

Long, S. P., et al. (2006). Can improvement in photosynthesis increase crop yields? Plant Cell and Environment, 29(3), 315-330. 

Raghavendra, A. S., & Sage, R. F. (2011). C4 photosynthesis and related CO2 concentrating mechanisms (Vol. 32). Springer Science & Business Media. 

Sage, R. F. (2004). The evolution of C4 photosynthesis. New Phytologist, 161(2), 341-370.

Sharkey, T. D. (2019). What gas exchange data can tell us about photosynthesis. Plant Cell and Environment, 42(11), 2757-2770. 

Taiz, L., & Zeiger, E. (2015). Plant physiology and development (6th ed.). Sinauer Associates. 

von Caemmerer, S., & Furbank, R. T. (2003). The C4 pathway: An efficient CO2 pump. Photosynthesis Research, 77(3), 191-207. 

Walker, B. J., et al. (2020). The cost of photorespiration to C3 plants. Nature Plants, 6(1), 33-41. 

Zhu, X. G., Long, S. P., & Ort, D. R. (2010). Improving photosynthetic efficiency for greater yield. Annual Review of Plant Biology, 61, 235-261.

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