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Ma P, Gao S, Zhang HY, Li BY, Zhong HX, Wang YK, Hu HM, Zhang HK, Luo BW, Zhang X, Liu D, Wu L, Gao DJ, Gao SQ, Zhang SZ, Gao SB. Identification and characterization of circRNAs in maize seedlings under deficient nitrogen. Plant Biol (Stuttg) 2021; 23:850-860. [PMID: 33932084 DOI: 10.1111/plb.13280] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2021] [Accepted: 04/20/2021] [Indexed: 06/12/2023]
Abstract
Here, deep sequencing results of the maize transcriptome in leaves and roots were compared under high-nitrogen (HN) and low-nitrogen (LN) conditions to identify differentially expressed circRNAs (DECs). Circular RNAs (circRNAs) are covalently closed non-coding RNA with widely regulatory potency that has been identified in animals and plants. However, the understanding of circRNAs involved in responsive nitrogen deficiency remains to be elucidated. A total of 24 and 22 DECs were obtained from the leaves and roots, respectively. Ten circRNAs were validated by divergent and convergent primers, and 6 DECs showed the same expression tendency validated by reverse transcriptase-quantitative PCR. Integrating the identified differentially expressed miRNAs, 34 circRNAs could act as miRNA decoys, which might play important roles in multiple biological processes, including organonitrogen compound biosynthesis and regulation of the metabolic process. A total of 51 circRNA-parent genes located in the genome-wide association study identified loci were assessed between HN and LN conditions and were associated with root growth and development. In summary, our results provide valuable information regarding further study of maize circRNAs under nitrogen deficiency and provide new insights into screening of candidate genes as well as the improvement of maize regarding nitrogen deficiency resistance. CircRNA-miRNA-mRNA co-expression networks were constructed to explore the circRNAs that participated in biological development and nitrogen metabolism.
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Affiliation(s)
- P Ma
- Maize Research Institute, Sichuan Agricultural University, Chengdu, China
| | - S Gao
- College of Agronomy, Sichuan Agricultural University, Chengdu, China
| | - H Y Zhang
- Maize Research Institute, Sichuan Agricultural University, Chengdu, China
| | - B Y Li
- Maize Research Institute, Sichuan Agricultural University, Chengdu, China
| | - H X Zhong
- Maize Research Institute, Sichuan Agricultural University, Chengdu, China
| | - Y K Wang
- Maize Research Institute, Sichuan Agricultural University, Chengdu, China
| | - H M Hu
- Maize Research Institute, Sichuan Agricultural University, Chengdu, China
| | - H K Zhang
- Maize Research Institute, Sichuan Agricultural University, Chengdu, China
| | - B W Luo
- Maize Research Institute, Sichuan Agricultural University, Chengdu, China
| | - X Zhang
- Maize Research Institute, Sichuan Agricultural University, Chengdu, China
| | - D Liu
- Maize Research Institute, Sichuan Agricultural University, Chengdu, China
| | - L Wu
- Maize Research Institute, Sichuan Agricultural University, Chengdu, China
| | - D J Gao
- Maize Research Institute, Sichuan Agricultural University, Chengdu, China
| | - S Q Gao
- Maize Research Institute, Sichuan Agricultural University, Chengdu, China
| | - S Z Zhang
- Maize Research Institute, Sichuan Agricultural University, Chengdu, China
| | - S B Gao
- Maize Research Institute, Sichuan Agricultural University, Chengdu, China
- State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Chengdu, China
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Bi J, Xiao DQ, Gao DJ, Yu P, Yu GL, Zhang W, Zhu JG. BaMoO4 thin films prepared by electrochemical method at room temperature. Cryst Res Technol 2003. [DOI: 10.1002/crat.200310116] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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