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Photosynthesis is improved by exogenous glycinebetaine in salt‐stressed maize plants
Abstract
The effects of exogenous application of glycinebetaine (GB) (10 m M) on growth, leaf water content, water use efficiency, photosynthetic gas exchange, and photosystem II photochemistry were investigated in maize plants subjected to salt stress (50 and 100 m M NaCl). Salt stress resulted in the decrease in growth and leaf relative water content as well as net photosynthesis and the apparent quantum yield of photosynthesis. Stomatal conductance, evaporation rate, and water use efficiency were decreased in salt‐stressed plants. Salt stress also caused a decrease in the actual efficiency of PSII (ΦPSII), the efficiency of excitation energy capture by open PSII reaction centers (Fv′/Fm′), and the coefficients of photochemical quenching (qP) but caused an increase in non‐photochemical quenching (NPQ). Salt stress showed no effects on the maximal efficiency of PSII photochemistry (Fv/Fm). On the other hand, in salt‐stressed plants, GB application improved growth, leaf water content, net photosynthesis, and the apparent quantum yield of photosynthesis. GB application also increased stomatal conductance, leaf evaporation rate, and water use efficiency. In addition, GB application increased ΦPSII, Fv′/Fm′, and qP but decreased NPQ. However, GB application showed no effects on Fv/Fm. These results suggest that photosynthesis was improved by GB application in salt‐stressed plants and such an improvement was associated with an improvement in stomatal conductance and the actual PSII efficiency.
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Everard, J. D., Gucci, R., Kann, S. C., Flore, J. A., & Loescher, W. H. (1994) · Plant Physiology · doi:10.1104/pp.106.1.281 · Cited by 245
Cited by
Roles of glycine betaine and proline in improving plant abiotic stress resistance
Ashraf, M., & Foolad, M. R. (2007) · Environmental and Experimental Botany · doi:10.1016/j.envexpbot.2005.12.006 · Cited by 4,776
Salt stress and phyto-biochemical responses of plants - a review
Parvaiz, A., & Satyawati, S. (2008) · Plant, Soil and Environment · doi:10.17221/2774-pse · Cited by 577
Compatible Solute Engineering in Plants for Abiotic Stress Tolerance - Role of Glycine Betaine
Hussain Wani, S., Brajendra Singh, N., Haribhushan, A., & Iqbal Mir, J. (2013) · Current Genomics · doi:10.2174/1389202911314030001 · Cited by 296
Farooq, M. A., Ali, S., Hameed, A., Bharwana, S. A., Rizwan, M., Ishaque, W., Farid, M., Mahmood, K., & Iqbal, Z. (2016) · South African Journal of Botany · doi:10.1016/j.sajb.2015.11.006 · Cited by 256
Metadata
- Authors
- Yang, X., & Lu, C.
- Venue
- Physiologia Plantarum
- Publisher
- Wiley
- Published
- 2005-06
- Volume
- 124
- Issue
- 3
- Pages
- 343-352
- ISSN
- 0031-9317 (ISSN-L)
- 1399-3054
- OpenAlex
- W2039432958
- Cited by
- 228
- References
- 1
- FWCI
- 6.50
- Type
- journal article
- Language
- en
- Open access
- closed
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- Yang, X., & Lu, C. (2005). Photosynthesis is improved by exogenous glycinebetaine in salt‐stressed maize plants. Physiologia Plantarum. https://doi.org/10.1111/j.1399-3054.2005.00518.x
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