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Transcriptomic and Physiological Analyses of Two Rice Restorer Cultivars under Different Nitrogen Supplies Provide New Insights for Hybrid Rice Breeding
Qin, X.; Li, X.; Xiao, J.; Wu, Q.; Li, Y.; Li, C.; Jiang, D.; Tang, T.; Nan, W.; Liang, Y.; Zhang, H. Transcriptomic and Physiological Analyses of Two Rice Restorer Lines under Different Nitrogen Supplies Provide Novel Insights into Hybrid Rice Breeding. Plants2023, 12, 2276.
Qin, X.; Li, X.; Xiao, J.; Wu, Q.; Li, Y.; Li, C.; Jiang, D.; Tang, T.; Nan, W.; Liang, Y.; Zhang, H. Transcriptomic and Physiological Analyses of Two Rice Restorer Lines under Different Nitrogen Supplies Provide Novel Insights into Hybrid Rice Breeding. Plants 2023, 12, 2276.
Qin, X.; Li, X.; Xiao, J.; Wu, Q.; Li, Y.; Li, C.; Jiang, D.; Tang, T.; Nan, W.; Liang, Y.; Zhang, H. Transcriptomic and Physiological Analyses of Two Rice Restorer Lines under Different Nitrogen Supplies Provide Novel Insights into Hybrid Rice Breeding. Plants2023, 12, 2276.
Qin, X.; Li, X.; Xiao, J.; Wu, Q.; Li, Y.; Li, C.; Jiang, D.; Tang, T.; Nan, W.; Liang, Y.; Zhang, H. Transcriptomic and Physiological Analyses of Two Rice Restorer Lines under Different Nitrogen Supplies Provide Novel Insights into Hybrid Rice Breeding. Plants 2023, 12, 2276.
Abstract
Improving plant nitrogen use efficiency (NUE) is important for many crops, especially in hybrid breeding. Reducing nitrogen inputs is key for achieving sustainable rice production and decreasing environmental problems. Here, we analyzed the transcriptomic and physiological changes in two indica restorer lines (Nanhui511 and Minghui23) under high (HN) and low nitrogen (LN) conditions. Nanhui511 (NH511) was more sensitive to different nitrogen supplies and exhibited higher nitrogen uptake and NUE under HN conditions by increasing lateral root and tiller numbers in the seedling and maturation stages, respectively. It also exhibited a lower survival rate than that of MH23 when planted in chlorate-containing hydroponic solution, indicating its high nitrogen uptake ability under different nitrogen supply conditions. When transferred from LN to HN conditions, NH511 had 2456 differentially expressed genes, whereas MH23 had only 266. Furthermore, genes related to nitrogen utilization showed differential expression in NH511 under HN conditions, while the opposite was observed in MH23. These results will help decrease certain limitations of hybrid rice breeding and provide novel data for high-NUE hybrid rice cultivation.
Keywords
Oryza sativa; restorer lines; physiology; nitrogen use efficiency; transcriptome
Subject
Biology and Life Sciences, Agricultural Science and Agronomy
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
