title: Metabolic Profiling and Physiological Analysis of a Novel Rice Introgression Line with Broad Leaf Size.
abstract: A rice introgression line, NIL-SS1, and its recurrent parent, Teqing, were used to investigate the influence of the introgression segment on plant growth. The current research showed NIL-SS1 had an increased flag leaf width, total leaf area, spikelet number per panicle and grain yield, but a decreased photosynthetic rate. The metabolite differences in NIL-SS1 and Teqing at different developmental stages were assessed using gas chromatography-mass spectrometry technology. Significant metabolite differences were observed across the different stages. NIL-SS1 increased the plant leaf nitrogen content, and the greatest differences between NIL-SS1 and Teqing occurred at the booting stage. Compared to Teqing, the metabolic phenotype of NIL-SS1 at the booting stage has closer association with those at the flowering stage. The introgression segment induced more active competition for sugars and organic acids (OAs) from leaves to the growing young spikes, which resulted in more spikelet number per plant (SNP). The results indicated the introgression segment could improve rice grain yield by increasing the SNP and total leaf area per plant, which resulted from the higher plant nitrogen content across growth stages and stronger competition for sugars and OAs of young spikes at the booting stage.
authors.affiliation: Institute of Crop Sciences/National Key Facility for Crop Gene Resources and Genetic Improvement, Chinese Academy of Agricultural Sciences, Beijing 100081, China.
authors.forename: Xiuqin
authors.initials: X
authors.lastname: Zhao
authors.affiliation: Shanghai Landscape Gardening Research Institute, Shanghai 200232, China.
authors.forename: Guilian
authors.initials: G
authors.lastname: Zhang
authors.affiliation: Rice Institute of Shenyang Agricultural University/Key Laboratory of Crop Physiology, Ecology, Genetics and Breeding, Ministry of Agriculture, Shenyang 110866, China.
authors.forename: Yun
authors.initials: Y
authors.lastname: Wang
authors.affiliation: Institute of Crop Sciences/National Key Facility for Crop Gene Resources and Genetic Improvement, Chinese Academy of Agricultural Sciences, Beijing 100081, China.
authors.forename: Fan
authors.initials: F
authors.lastname: Zhang
authors.affiliation: Institute of Crop Sciences/National Key Facility for Crop Gene Resources and Genetic Improvement, Chinese Academy of Agricultural Sciences, Beijing 100081, China.
authors.forename: Wensheng
authors.initials: W
authors.lastname: Wang
authors.affiliation: China University of Mining and Technology, Beijing 100083, China.
authors.forename: Wenhao
authors.initials: W
authors.lastname: Zhang
authors.affiliation: Institute of Crop Sciences/National Key Facility for Crop Gene Resources and Genetic Improvement, Chinese Academy of Agricultural Sciences, Beijing 100081, China.|Shenzhen Institute for Innovative Breeding, Chinese Academy of Agricultural Sciences, Shenzhen 518120, China.
authors.forename: Binying
authors.initials: B
authors.lastname: Fu
authors.affiliation: Institute of Crop Sciences/National Key Facility for Crop Gene Resources and Genetic Improvement, Chinese Academy of Agricultural Sciences, Beijing 100081, China.|Shenzhen Institute for Innovative Breeding, Chinese Academy of Agricultural Sciences, Shenzhen 518120, China.|Agricultural Genomics Institute, Chinese Academy of Agricultural Sciences, Shenzhen 518120, China.
authors.forename: Jianlong
authors.initials: J
authors.lastname: Xu
authors.affiliation: Institute of Crop Sciences/National Key Facility for Crop Gene Resources and Genetic Improvement, Chinese Academy of Agricultural Sciences, Beijing 100081, China.|Shenzhen Institute for Innovative Breeding, Chinese Academy of Agricultural Sciences, Shenzhen 518120, China.
authors.forename: Zhikang
authors.initials: Z
authors.lastname: Li
mesh_terms: D002523:Edible Grain / Q000033:anatomy & histology; D006824:Hybridization, Genetic; D055432:Metabolomics; D012275:Oryza / Q000033:anatomy & histology* / Q000254:growth & development / Q000378:metabolism* / Q000502:physiology; D010641:Phenotype; D018515:Plant Leaves / Q000033:anatomy & histology* / Q000254:growth & development