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INCREASED CARBON LOSS VIA ROOT RESPIRATION AND IMPAIRED ROOT MORPHOLOGY UNDER FREE-AIR OZONE ENRICHMENT ADVERSELY AFFECT RICE (ORYZA SATIVA L.) PRODUCTION

  • T. J. KOU (a1) (a2), L. K. LAI (a1), S. K. LAM (a2), D. CHEN (a2) and J. HE (a3)...

Summary

The increasing tropospheric ozone concentration [O3] strongly affects plant growth. However, the response of belowground processes in rice (Oryza sativa L.) systems to higher O3 is not well understood. The grain production, belowground biomass partitioning, root morphology and activity of rice (cv. Shanyou 63) were investigated in a free-air O3 enrichment platform at four key growth stages. Elevated O3 (EO3, 50% above the ambient O3) significantly decreased the grain yield and total biomass at the grain milky mature stage, root biomass at the tillering stage and root to shoot ratios (RRS) at the flowering and grain filling stages. The effects of EO3 on root morphology and activity varied among rice growth stage. EO3 significantly decreased root length, density, area, diameter and volume at the flowering stage, but EO3 significantly decreased various root morphological indices at the tillering, grain filling and milky mature stages. EO3 significantly increased the specific root respiration rate (root activity) and root respiration rate (autotrophic respiration) at grain filling and milky mature stages. Higher root autotrophic respiration and lower RRS in response to EO3 would reduce allocation of assimilated carbon to root growth, adversely affecting rice productivity. Our findings are critical for understanding the O3-induced impairment of belowground processes and carbon cycling in rice cropping systems and breeding of O3-tolerant cultivars under higher [O3] scenarios.

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Corresponding author

Corresponding author. Email: tjkou@aliyun.com

References

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Andersen, C. P. (2003). Source–sink balance and carbon allocation below ground in plants exposed to ozone. New Phytologist 157:213228.
Coleman, M. D., Dickson, R. E., Isebrands, J. G. and Karnosky, D. F. (1996). Root growth and physiology of potted and field-grown trembling aspen exposed to tropospheric ozone. Tree Physiology 16:145152.
Cooley, D. R. and Manning, W. J. (1987) The impact of ozone on assimilate partitioning in plants: A review. Environmental Pollution 47:95113.
Cooper, O. R., Parrish, D. D., Stohl, A., Trainer, M., Nédélec, P., Thouret, V., Cammas, J. P. S., Oltmans, J., Johnson, B. J., Tarasick, D., Leblanc, T., McDermid, I. S., Jaffe, D., Gao, R., Stith, J., Ryerson, T., Aikin, K., Campos, T., Weinheimer, A. and Avery, M. A. (2010). Increasing springtime ozone mixing ratios in the free troposphere over western North America. Nature 463:344348.
Edwards, N. T. (1991). Root and soil respiration responses to ozone in Pinus taeda L. seedlings. New Phytologist 118:315321.
Fiscus, E. L., Booker, E. L. and Burkey, K. O. (2005). Crop responses to ozone: Uptake, modes of action, carbon assimilation and partitioning. Plant Cell and Environment 28:9971011.
Hanson, P. J., Edwards, N. T., Garten, C. T. and Andrews, J. A. (2000). Separating root and soil microbial contributions to soil respiration: A review of methods and observations. Biogeochemistry 48:115146.
Hofstra, G., Ali, A. and Wukasch, R. T. (1981). The rapid inhibition of root respiration after exposure of bean (Phaseolus vulgaris L.) plants to ozone. Atmospheric Environment 15:483487.
IPCC. (2013). Climate change 2013: The physical science basis. Report of the Working Group I. Intergov Panel Clim Change. http://www.climatechange2013.org/.
Kou, T. J., Cheng, X. H., Zhu, J. G. and Xie, Z. B. (2015). The influence of ozone pollution on CO2, CH4, and N2O emissions from a Chinese subtropical rice–wheat rotation system under free-air O3 exposure. Agriculture Ecosystems & Environment 204:7281.
Kou, T. J., Xu, G. W. and Zhu, J. G. (2017a). Impact of elevated ozone on nutrient uptake and utilization of Chinese hybrid indica rice (Oryza Sativa) cultivars under free-air ozone enrichment. Communications in Soil Science and Plant Analysis 48:635645.
Kou, T. J., Yu, W. W., Lam, S. K., Chen, D. L., Hou, Y. P. and Li, Z. Y. (2017b). Differential root responses in two cultivars of winter wheat (Triticum aestivum L.) to elevated ozone concentration under fully open-air field conditions. Journal of Agronomy and Crop Science. Published online. https://doi.org/10.1111/jac.12257.
Kou, T.J. and Zhu, J.G. (2013). Responses of rice root in respiration at jointing stage to ozone pollution and alternation of anaerobic and aerobic conditions. Acta Pedologiga Sinica 50:7782.
Kou, T. J., Zhu, J. G., Xie, Z. B., Hasegawa, T. and Heiduk, K. (2007). Effect of elevated atmospheric CO2 concentration on soil respiration and root respiration in winter wheat by using a respiration partitioning chamber. Plant and Soil 299:237249.
McCrady, J. K. and Andersen, C. P. (2000). The effect of ozone on below-ground carbon allocation in wheat. Environmental Pollution 107:465472.
Nouch, I., Ito, O., Harazon, Y. and Kobayashi, K. (1991). Effects of chronic ozone exposure on growth, root respiration and nutrient uptake of rice plants. Environmental Pollution 74:149164.
Pang, J., Kobayashi, K. and Zhu, J. G. (2009). Yield and photosynthetic characteristics of flag leaves in Chinese rice (Oryza sativa L.) varieties subjected to free-air release of ozone. Agriculture Ecosystems & Environment 132:203211.
Renaud, J. P., Allard, G. and Mauffette, Y. (1997). Effects of ozone on yield, growth, and root starch concentrations of two alfalfa (Medicago sativ A L.) cultivars. Environmental Pollution 95:273281.
Scagel, C. F. and Andersen, C. P. (1997). Seasonal changes in root and soil respiration of ozone- exposed ponderosa pine (Pinus ponderosa) grown in different substrates. New Phytologist 136:627643.
Wang, C., Bai, Y., Wen, M. and Huang, H. (2004). Effects of double CO2 and O3 on growth and yields in soybean. Environment Science 25:610.
Wang, X. and Mauzerall, D. L. (2004). Characterizing distributions of surface ozone and its impact on grain production in China, Japan and South Korea: 1990 and 2020. Atmospheric Environment 38:43834402.
Wang, X. K., Manning, W. J., Feng, Z. W. and Zhu, Y. G. (2007). Ground-level ozone in China: Distribution and effects on crop yields. Environmental Pollution 147:394400.
Witcombe, J. R., Khadka, K., Puri, R. R., Khanal, N. P., Sapkota, A. and Joshi, K. D. (2017). Adoption of rice varieties – I. Age of varieties and patterns of variability. Experimental Agriculture 53:512527.
Wittig, V. E., Ainsworth, E. A., Naidu, S. L., Karnosky, D. F. and Long, S. P. (2009). Quantifying the impact of current and future tropospheric ozone on tree biomass, growth, physiology and biochemistry: A quantitative meta-analysis. Global Change Biology 15:396424.
Yoshida, L. C., Gamon, J. A. and Andersen, C. P. (2001). Differences in above- and below-ground responses to ozone between two populations of a perennial grass. Plant and Soil 233:203211.
Zhao, T., Cao, Y., Wang, Y., Dai, Z., Liu, Y. and Liu, B. (2012). Effects of ozone stress on soybean roots morphology and reactive oxygen metabolism. Soybean Science 31:5257.
Zhao, Y., Shao, Z., Wang, Y., Song, Q., Wang, Y. and Yang, L. (2015). Impact of elevated atmospheric carbon dioxide and ozone concentration on growth dynamic, dry matter production, and nitrogen uptake of hybrid rice Shanyou 63. Acta Ecologica Sinica 35:81288138.
Zogg, G. P., Zak, D. R., Burton, A. J. and Pregitzer, K. S. (1996). Fine root respiration in northern hardwood forests in relation to temperature and nitrogen availability. Tree Physiology 16:719725.
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INCREASED CARBON LOSS VIA ROOT RESPIRATION AND IMPAIRED ROOT MORPHOLOGY UNDER FREE-AIR OZONE ENRICHMENT ADVERSELY AFFECT RICE (ORYZA SATIVA L.) PRODUCTION

  • T. J. KOU (a1) (a2), L. K. LAI (a1), S. K. LAM (a2), D. CHEN (a2) and J. HE (a3)...

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