期刊
PLANT SCIENCE
卷 325, 期 -, 页码 -出版社
ELSEVIER IRELAND LTD
DOI: 10.1016/j.plantsci.2022.111475
关键词
N use efficiency; Photosynthesis improvement; Rice yield; Rubisco; Source and sink
The success of dwarf breeding of rice is attributed to increased source and sink capacities dependent on significant inputs of N fertilizer, which has had an impact on the environment. Transgenic rice overproducing Rubisco has shown improved N use efficiency in paddy fields under high N fertilization. Enhancing photosynthesis is crucial for increasing the yield of high-yielding cultivars.
The success of the dwarf breeding of rice, called the Green Revolution in Asia, resulted from increased source and sink capacities depending on significant inputs of N fertilizer. Although N fertilization is essential for increasing cereal production, large inputs of N application have significantly impacted the environment. Transgenic rice overproducing Rubisco has demonstrated increased yields with improved N use efficiency for increasing biomass production under high N fertilization in a paddy field. A large grain cultivar, Akita 63, had a high yield by enlarging the sink capacity without photosynthesis improvement. However, source capacity strongly limited the yield potential under high N fertilization. Enhancing photosynthesis is important for further increasing the yield of current high-yielding cultivars. Developing innovative rice plants with both high photosynthesis and large sink capacity is essential.
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