Nitrogen resorption in senescing leaf blades of rice exposed to free-air CO2 enrichment (FACE) under different N fertilization levels
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Nitrogen (N) resorption from senescing leaves is essential to meet N demand for grain development in rice (Oryza sativa L.). We asked whether rice is capable of reducing N in their senesced leaf blade to lower concentration at elevated [CO2] more in low than in high N fertilization.
The effects of elevated [CO2] and N fertilization on senesced leaf N concentration were examined for 3 years with the free-air CO2 enrichment (FACE) technology.
Elevated [CO2] decreased the senesced leaf N concentration but the change was generally small and did not hold over the growing seasons. Additionally, there was no evidence that the change was greater at low than at high N fertilization levels.
The 3-year field measurements showed that elevated [CO2] did not change the senesced leaf N concentration consistently. The occasional decrease in senesced leaf N concentration was associated with a decrease in green leaf N concentration at elevated [CO2] but not with the proportion of leaf N resorbed during leaf senescence.
KeywordsAtmospheric carbon dioxide concentration Global change Leaf senescence Litter production Litter quality Nitrogen retranslocation
We gratefully acknowledge the staff members of NIAES for their support in operating and maintaining the Tsukubamirai FACE experimental facility. Kazuki Nakamura, Takahiro Ogawa and the other members of TUA provided assistance with sampling at the field. We also thank Kentaro Hayashi, Shin-Ichi Miyazawa and Toshihiko Kinugasa for comments. This work was supported in part by the Ministry of Agriculture, Forestry and Fisheries, Japan, through a research project entitled “Development of Technologies for Mitigation and Adaptation to Climate Change in Agriculture, Forestry and Fisheries”, in part by a Grant-in-Aid for Scientific Research on Innovative Areas (no. 21114009, 24114711) by the Japan Society for the Promotion of Science, as part of the project entitled, “Comprehensive Studies of Plant Responses to a High CO2 World by an Innovative Consortium of Ecologists and Molecular Biologists.”
SO and THi designed the research. HN and THa operated and managed the FACE experimental facility. SO, HE, MK, CPC, THa, HS, YU and TT conducted fieldwork. Laboratory work was carried out by SO, HE and MK. SO analyzed data and drafted the manuscript. THi, KH, TT, CPC, YU and THa contributed to manuscript revisions.
Compliance with ethical standards
Conflict of interest
The authors declare that they have no conflict of interest.
- Aerts R, Chapin FS III (2000) The mineral nutrition of wild plants revisited: a re-evaluation of processes and patterns. Adv Ecol Res 30:1–67Google Scholar
- Bouwman L, Klein Gldewijk K, Van Der Hoek KW, Beusen AHW, Van Vuuren DP, Wilems J, Rufino MC, Stehfest E (2013) Exploring global changes in nitrogen and phosphorus cycles in agriculture induced by livestock production over the 1900-2050 period. Proc Natl Acad Sci U S A 110:20882–20887CrossRefPubMedGoogle Scholar
- Finzi AC, Allen AS, Delucia EH, Ellsworth DS, Schlesinger WH (2001) Forest litter production, chemistry, and decomposition following two years of free-air CO2 enrichment. Ecology 82:470–484Google Scholar
- Hasegawa T, Sakai H, Tokida T, Nakamura H, Zhu C, Usui Y, Yoshimoto M, Fukuoka M, Wakatsuki H, Katayanagi N, Matsunami T, Kaneta Y, Sato T, Takakai F, Sameshima R, Okada M, Mae T, Makino A (2013) Rice cultivar responses to elevated CO2 at two free-air CO2 enrichment (FACE) sites in Japan. Func Plant Biol 40:148–159CrossRefGoogle Scholar
- Inagaki M, Kamo K, Titin J, Jamalung L, Lapongan J, Mura S (2011) Nutrient dynamics through fine litterfall in three plantations in Sabah, Malaysia, in relation to nutrient supply to surface soil. Nut Cycli Agr 88:381–395Google Scholar
- Kobe RK, Lepczyk CA, Iyer M (2005) Resorption efficiency decreases with increasing green leaf nutrients in a global data set. Ecology 86:2780–2792Google Scholar
- Mae T (1986) Partitioning and utilization of nitrogen in rice plants. Japan Agr Res Quarterly 20:115–120Google Scholar
- Mae T, Ohira K (1981) The remobilization of nitrogen related to leaf growth and senescence in rice plants (Oryza sativa L.). Plant Cell Physiol 22:1067–1074Google Scholar
- Matsushima S (1995) Physiology of high-yielding rice plants from the viewpoint of yield components. In: Matsuo T, Kumazawa K, Ishii R, Ishihara K, Hirata H (eds) Science of the rice plants, volume II. Food and Agriculture Policy Research Center, TokyoGoogle Scholar
- Miyazawa S-I, Hayashi K, Nakamura H, Hasegawa T, Miyao M (2014) Elevated CO2 decreases the photorespiratory NH3 production but does not decrease the NH3 compensation point in rice leaves. Plant Cell Physiol 55:1482–1591Google Scholar
- Norby RJ, Iversen CM (2006) Nitrogen uptake, distribution, turnover, and efficiency of use in a CO2-enriched sweetgum forest. Ecology 87:5–14Google Scholar
- Oritani T (1984) Studies on nitrogen metabolism in crop plants. XX. Translocation and accumulation into sink of 15N top-dressed at different growth stages in the rice plant. Jpn J Crop Sci 53:276–281 (In Japanese with English summary)Google Scholar
- R Development Core Team (2006) R: a language and environment for statistical computing. Vienna, Austria: R Foundation for Statistical Computing. ISBN 3–900051–07-0, URL http://www.R-project.org.
- Strain BR, Bazzaz FA (1983) Terrestrial plant communities. In: Lemon ER (ed) CO2 and plants. Westview Press, Boulder, pp 177–222Google Scholar
- Tanaka A (1956) Studies on characteristics of physiological function of leaf at definite position on stem of rice plant. Part 3. Relation between nitrogen metabolism and physiological function of leaf at definite position. Jpn J Soil Sci Plant Nut 26:27–32 (In Japanese with English summary)Google Scholar
- Zhang G, Sakai H, Tokida T, Usui Y, Zhu C, Nakamura H, Yoshimoto M, Fukuoka M, Kobayashi K, Hasegawa T (2013) The effects of free-air CO2 enrichment (FACE) on carbon and nitrogen accumulation in grains of rice (Oryza sativa L.). J Exp Bot 64:3179–3188Google Scholar