Article
Plant Sciences
Zhiyuan Li, Hong Jiang, Zhiguo Liang, Zepeng Wang, Xiumei Jiang, Yong Qin
Summary: This study examined the effects of nitrogen fertilizer reduction on the carbon metabolism and yield of Coreopsis tinctoria. The results showed that lower nitrogen levels significantly increased the activity of enzymes involved in carbon metabolism and maintained the flower number of C. tinctoria. Therefore, applying relatively low nitrogen fertilizer levels is a promising cultivation strategy for C. tinctoria.
JOURNAL OF PLANT GROWTH REGULATION
(2023)
Article
Plant Sciences
Zhiyuan Li, Hong Jiang, Xiumei Jiang, Lifang Zhang, Yumiti Yusupu, Yong Qin
Summary: The use of Coreopsis tinctoria as a medicinal plant has gained popularity in China, but there is a lack of basic data on NO3- supply related to yield and nitrogen metabolism. This study examined the effects of N reduction on N metabolism and flower numbers in C. tinctoria. The results showed that appropriate N reduction levels, especially in N2, affected N metabolism and maintained flower numbers in C. tinctoria.
JOURNAL OF PLANT GROWTH REGULATION
(2023)
Article
Food Science & Technology
Hanne Vissenaekens, Guy Smagghe, Hanne Criel, Charlotte Grootaert, Katleen Raes, Andreja Rajkovic, Geert Goeminne, Nico Boon, Kristof De Schutter, John Van Camp
Summary: The study demonstrates that quercetin can partially restore mitochondrial dysfunction, especially FCCP-induced dysfunction, in intestinal cells by accumulating in the mitochondria.
FOOD RESEARCH INTERNATIONAL
(2021)
Article
Plant Sciences
Maoxiang Sun, Suhong Li, Haixiang Yu, Qingtao Gong, Binbin Zhang, Guangyuan Liu, Yuansong Xiao, Futian Peng
Summary: Nitrogen availability and uptake levels can influence nutrient accumulation in plants. This study investigated the effects of valine and urea supplementation on the growth, lignin content, and carbon and nitrogen metabolism of 'Ruiguang 39/peach' trees. Valine application inhibited shoot longitudinal growth and increased lignification, while also increasing the levels of protein enzymes involved in sucrose and nitrogen metabolism. Urea application increased protein levels of carbon- and nitrogen-metabolizing enzymes, but reduced overall nutrient accumulation and lignin content per unit tree mass. In conclusion, valine application positively affects carbon and nitrogen nutrient accumulation in peach trees, as well as lignin content.
Article
Chemistry, Applied
Gaobo Yu, Fengqiong Chen, Yating Wang, Qiusen Chen, Hanlin Liu, Jin Tian, Mengxue Wang, Chunyuan Ren, Qiang Zhao, Fengjun Yang, Yunyan Sheng, Jinpeng Wei, Yuxian Zhang
Summary: This study reveals that GABA effectively improves the nutritional quality of edamame by accumulating amino acids, bioactive peptides, isoflavones, anthocyanins, sugars, and organic acids. Exogenous GABA increases the metabolism of endogenous GABA and enhances the activity and expression of nitrogen metabolism-related enzymes, leading to an accumulation of amino acids and bioactive peptides. Additionally, exogenous GABA induces the metabolism of flavonoids by increasing the activity and expression of flavonoid biosynthetic enzymes.
Article
Plant Sciences
Weiwei Zhou, Xin Liang, Kejie Li, Peibin Dai, Junliang Li, Bin Liang, Chengliang Sun, Xianyong Lin
Summary: The study found that low nitrogen supply significantly affects carbon metabolism, amino acid metabolism, and phenolic biosynthesis metabolism in lettuce, leading to a significant increase in phenolic content. This suggests that low nitrogen treatment may effectively redirect carbon and nitrogen resources to the phenolic biosynthesis pathway, thereby increasing the phenolic accumulation in lettuce.
PLANT PHYSIOLOGY AND BIOCHEMISTRY
(2021)
Article
Plant Sciences
Qiang Li, Yun Ren, Hao Fu, Zhexin Li, Fanlei Kong, Jichao Yuan
Summary: The balance of carbon and nitrogen metabolism affects the growth and yield of maize. In this study, the N-efficient cultivar ZH 311 showed advantages in C and N accumulation and balance, leading to higher grain yield compared to the N-inefficient cultivar XY 508. The grain yield was positively correlated with C and N accumulation, affected by pre-anthesis N and post-anthesis C accumulation, and negatively correlated with the C/N ratio.
FRONTIERS IN PLANT SCIENCE
(2022)
Article
Agricultural Engineering
Xin Zhang, Hong -Tao Shi, Xiao-Chi Feng, Chen-Yi Jiang, Wen-Qian Wang, Zi-Jie Xiao, Yu-Jie Xu, Qin-Yao Zeng, Nan-Qi Ren
Summary: A highly efficient aerobic denitrifying microbe, Pseudomonas mendocina HITSZ-D1, was isolated from sewage sludge using a denitrifier enrichment strategy. The microbe showed good growth and nitrate removal performance under a wide range of conditions, with a total nitrogen removal efficiency of >96% at a C/N ratio of 8. Furthermore, it had higher denitrification efficiency and enzyme activities compared to other aerobic denitrifying microbes.
BIORESOURCE TECHNOLOGY
(2023)
Article
Agricultural Engineering
Zhiyuan Li, Hong Jiang, Xiumei Jiang, Lifang Zhang, Yong Qin
Summary: Low-N treatment in snow chrysanthemum promotes early flowering and increases flavonoid accumulation. It also increases the C/N ratio and total flavonoid content in flowers. Low-N treatment leads to the accumulation of specific flavonoid metabolites and enhances antioxidant activity. PAL, 4CL, HCT, C3'H, CHS, DFR, and ANR are key genes involved in flavonoid accumulation under low-N conditions.
INDUSTRIAL CROPS AND PRODUCTS
(2023)
Article
Plant Sciences
Xinbo Zhang, Yonggang Ding, Quan Ma, Fujian Li, Rongrong Tao, Tao Li, Min Zhu, Jinfeng Ding, Chunyan Li, Wenshan Guo, Xinkai Zhu
Summary: Nitrogen is a vital nutrient for plant growth, and developing wheat varieties with high nitrogen use efficiency (NUE) is crucial for sustainable crop production. However, the molecular mechanism of NUE between different wheat varieties and their response to N application is still unclear. In this study, we investigated the transcriptional and metabolic changes in the flag leaves of two wheat near-isogenic lines (NILs) with different NUE under two N fertilizer treatments. Our comparative analysis revealed that high-NUE wheat had significantly higher expression levels of genes related to carbon and nitrogen metabolism. Furthermore, the activity of the tricarboxylic acid (TCA) cycle was enhanced in high-NUE wheat but reduced in low-NUE wheat after N fertilizer application. Amino acid metabolism increased in both wheat NILs, but the increase was more pronounced in high-NUE wheat. This study provides valuable insights into improving NUE in wheat.
PLANT PHYSIOLOGY AND BIOCHEMISTRY
(2023)
Article
Environmental Sciences
Songbai Hong, Nan Cong, Jinzhi Ding, Shilong Piao, Lingli Liu, Josep Penuelas, Anping Chen, Timothy A. Quine, Hui Zeng, Benjamin Z. Houlton
Summary: This study investigates the response of soil nitrogen (N) concentrations and C:N ratios to afforestation in northern China and on a global scale. The results show that soil N status influences soil carbon (C) and N dynamics after afforestation. Afforestation increases soil C and N storages in N-poor soils but decreases them in N-rich soils. Changes in soil C:N ratios are mediated by the initial relative abundance of soil C and N, as well as the types of mycorrhiza associated with planted trees.
GLOBAL BIOGEOCHEMICAL CYCLES
(2023)
Article
Biochemistry & Molecular Biology
Hao Sun, Huiting Cui, Jiaju Zhang, Junmei Kang, Zhen Wang, Mingna Li, Fengyan Yi, Qingchuan Yang, Ruicai Long
Summary: The study identified mutant lines with a dwarf phenotype due to Tnt1 retrotransposon insertion in the gibberellin 3-beta-dioxygenase 1 gene (GA3ox1), inhibiting the synthesis of bioactive gibberellic acids (GAs). Analysis revealed shorter plant height, root, and petiole length in mutants compared to the wild type, with smaller leaf size attributed to cell-size diminution. Proteomic and metabolomic analyses indicated up-regulation of flavonoid isoflavonoid biosynthesis and down-regulation of nitrogen metabolism in the mutants, suggesting a critical role of GAs in regulating nitrogen metabolism positively and flavonoid biosynthesis negatively in leaves.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2021)
Article
Plant Sciences
Chu Zhong, Shao-Fen Jian, Dong-Liang Chen, Xue-Jing Huang, Jian-Hua Miao
Summary: The form of nitrogen affects the secondary metabolites of medicinal plants, with organic nitrogen sources enhancing andrographolide biosynthesis. Plants grown with organic nitrogen sources showed higher photosynthetic rates and increased starch accumulation, while ammonium decreased leaf SPAD value but increased photosynthetic rate and soluble sugar content.
PLANT PHYSIOLOGY AND BIOCHEMISTRY
(2021)
Article
Agriculture, Multidisciplinary
Min Xi, Wenge Wu, Youzun Xu, Yongjin Zhou, Gang Chen, Yalan Ji, Xueyuan Sun
Summary: This study revealed that applying nitrogen fertilizer at the panicle initiation stage can significantly increase the protein content in rice grains, promoting grain chalkiness. This mechanism is attributed to the influence of nitrogen fertilizer on the activity of key enzymes, leading to increased synthesis and accumulation of proteins, ultimately resulting in grain chalkiness.
JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE
(2021)
Article
Biotechnology & Applied Microbiology
Jianrong Chen, Weizhuo Tang, Chunyan Li, Ding Kuang, Xiaojiang Xu, Yuan Gong, Fang Liu, Song Gao
Summary: This study revealed the key genes related to the biosynthesis of flavonoids in gardenia by analyzing the transcriptome and metabolome. It was found that these genes showed a certain spatial and temporal pattern in gene expression during fruit development and ripening.