Rice Cultivar Takanari Has Higher Photosynthetic Performance Under Fluctuating Light Than Koshihikari, Especially Under Limited Nitrogen Supply and Elevated CO2
Plants in the field experience dynamic changes of sunlight rather than steady-state irradiation. Therefore, increasing the photosynthetic rate of an individual leaf under fluctuating light is essential for improving crop productivity. The high-yielding indica rice (Oryza sativa L.) cultivar Takanari...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Frontiers Media S.A.
2020-09-01
|
| Series: | Frontiers in Plant Science |
| Subjects: | |
| Online Access: | https://www.frontiersin.org/article/10.3389/fpls.2020.01308/full |
| _version_ | 1819071819373608960 |
|---|---|
| author | Satoshi Ohkubo Yu Tanaka Wataru Yamori Shunsuke Adachi Shunsuke Adachi |
| author_facet | Satoshi Ohkubo Yu Tanaka Wataru Yamori Shunsuke Adachi Shunsuke Adachi |
| author_sort | Satoshi Ohkubo |
| collection | DOAJ |
| description | Plants in the field experience dynamic changes of sunlight rather than steady-state irradiation. Therefore, increasing the photosynthetic rate of an individual leaf under fluctuating light is essential for improving crop productivity. The high-yielding indica rice (Oryza sativa L.) cultivar Takanari is considered a potential donor of photosynthesis genes because of its higher steady-state photosynthesis at both atmospheric and elevated CO2 concentrations than those of several Japanese commercial cultivars, including Koshihikari. Photosynthetic induction after a sudden increase in light intensity is faster in Takanari than in Koshihikari, but whether the daily carbon gain of Takanari outperforms that of Koshihikari under fluctuating light in the field is unclear. Here we report that Takanari has higher non-steady-state photosynthesis, especially under low nitrogen (N) supply, than Koshihikari. In a pot experiment, Takanari had greater leaf carbon gain during the initial 10 min after a sudden increase in irradiation and higher daily CO2 assimilation under simulated natural fluctuating light, at both atmospheric (400 ppm) and elevated (800 ppm) CO2 concentrations. The electron transport rate during a day under field conditions with low N supply was also higher in Takanari than in Koshihikari. Although the advantages of Takanari were diminished under high N supply, photosynthetic N use efficiency was consistently higher in Takanari than in Koshihikari, under both low and high N supply. This study demonstrates that Takanari is a promising donor parent to use in breeding programs aimed at increasing CO2 assimilation in a wide range of environments, including future higher CO2 concentrations. |
| first_indexed | 2024-12-21T17:27:53Z |
| format | Article |
| id | doaj.art-4a20868c2f8c4111976d1cda3763ebbe |
| institution | Directory Open Access Journal |
| issn | 1664-462X |
| language | English |
| last_indexed | 2024-12-21T17:27:53Z |
| publishDate | 2020-09-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Plant Science |
| spelling | doaj.art-4a20868c2f8c4111976d1cda3763ebbe2022-12-21T18:55:59ZengFrontiers Media S.A.Frontiers in Plant Science1664-462X2020-09-011110.3389/fpls.2020.01308571934Rice Cultivar Takanari Has Higher Photosynthetic Performance Under Fluctuating Light Than Koshihikari, Especially Under Limited Nitrogen Supply and Elevated CO2Satoshi Ohkubo0Yu Tanaka1Wataru Yamori2Shunsuke Adachi3Shunsuke Adachi4Institute of Global Innovation Research, Tokyo University of Agriculture and Technology, Fuchu, JapanGraduate School of Agriculture, Kyoto University, Kyoto, JapanGraduate School of Agricultural and Life Sciences, Institute for Sustainable Agro-Ecosystem Services, The University of Tokyo, Nishitokyo, JapanInstitute of Global Innovation Research, Tokyo University of Agriculture and Technology, Fuchu, JapanCollege of Agriculture, Ibaraki University, Inashiki, JapanPlants in the field experience dynamic changes of sunlight rather than steady-state irradiation. Therefore, increasing the photosynthetic rate of an individual leaf under fluctuating light is essential for improving crop productivity. The high-yielding indica rice (Oryza sativa L.) cultivar Takanari is considered a potential donor of photosynthesis genes because of its higher steady-state photosynthesis at both atmospheric and elevated CO2 concentrations than those of several Japanese commercial cultivars, including Koshihikari. Photosynthetic induction after a sudden increase in light intensity is faster in Takanari than in Koshihikari, but whether the daily carbon gain of Takanari outperforms that of Koshihikari under fluctuating light in the field is unclear. Here we report that Takanari has higher non-steady-state photosynthesis, especially under low nitrogen (N) supply, than Koshihikari. In a pot experiment, Takanari had greater leaf carbon gain during the initial 10 min after a sudden increase in irradiation and higher daily CO2 assimilation under simulated natural fluctuating light, at both atmospheric (400 ppm) and elevated (800 ppm) CO2 concentrations. The electron transport rate during a day under field conditions with low N supply was also higher in Takanari than in Koshihikari. Although the advantages of Takanari were diminished under high N supply, photosynthetic N use efficiency was consistently higher in Takanari than in Koshihikari, under both low and high N supply. This study demonstrates that Takanari is a promising donor parent to use in breeding programs aimed at increasing CO2 assimilation in a wide range of environments, including future higher CO2 concentrations.https://www.frontiersin.org/article/10.3389/fpls.2020.01308/fullCO2electron transportnitrogennon-steady-state photosynthesisricestomatal conductance |
| spellingShingle | Satoshi Ohkubo Yu Tanaka Wataru Yamori Shunsuke Adachi Shunsuke Adachi Rice Cultivar Takanari Has Higher Photosynthetic Performance Under Fluctuating Light Than Koshihikari, Especially Under Limited Nitrogen Supply and Elevated CO2 Frontiers in Plant Science CO2 electron transport nitrogen non-steady-state photosynthesis rice stomatal conductance |
| title | Rice Cultivar Takanari Has Higher Photosynthetic Performance Under Fluctuating Light Than Koshihikari, Especially Under Limited Nitrogen Supply and Elevated CO2 |
| title_full | Rice Cultivar Takanari Has Higher Photosynthetic Performance Under Fluctuating Light Than Koshihikari, Especially Under Limited Nitrogen Supply and Elevated CO2 |
| title_fullStr | Rice Cultivar Takanari Has Higher Photosynthetic Performance Under Fluctuating Light Than Koshihikari, Especially Under Limited Nitrogen Supply and Elevated CO2 |
| title_full_unstemmed | Rice Cultivar Takanari Has Higher Photosynthetic Performance Under Fluctuating Light Than Koshihikari, Especially Under Limited Nitrogen Supply and Elevated CO2 |
| title_short | Rice Cultivar Takanari Has Higher Photosynthetic Performance Under Fluctuating Light Than Koshihikari, Especially Under Limited Nitrogen Supply and Elevated CO2 |
| title_sort | rice cultivar takanari has higher photosynthetic performance under fluctuating light than koshihikari especially under limited nitrogen supply and elevated co2 |
| topic | CO2 electron transport nitrogen non-steady-state photosynthesis rice stomatal conductance |
| url | https://www.frontiersin.org/article/10.3389/fpls.2020.01308/full |
| work_keys_str_mv | AT satoshiohkubo ricecultivartakanarihashigherphotosyntheticperformanceunderfluctuatinglightthankoshihikariespeciallyunderlimitednitrogensupplyandelevatedco2 AT yutanaka ricecultivartakanarihashigherphotosyntheticperformanceunderfluctuatinglightthankoshihikariespeciallyunderlimitednitrogensupplyandelevatedco2 AT wataruyamori ricecultivartakanarihashigherphotosyntheticperformanceunderfluctuatinglightthankoshihikariespeciallyunderlimitednitrogensupplyandelevatedco2 AT shunsukeadachi ricecultivartakanarihashigherphotosyntheticperformanceunderfluctuatinglightthankoshihikariespeciallyunderlimitednitrogensupplyandelevatedco2 AT shunsukeadachi ricecultivartakanarihashigherphotosyntheticperformanceunderfluctuatinglightthankoshihikariespeciallyunderlimitednitrogensupplyandelevatedco2 |