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Qin X, Zhang X, Ma C, Yang X, Hu Y, Liu Y, Hu Y, Wang D, Xiaodong Lv, Wang C, Shou J, Li B. Rice OsCIPK17-OsCBL2/3 module enhances shoot Na + exclusion and plant salt tolerance in transgenic Arabidopsis. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2024; 215:109034. [PMID: 39226761 DOI: 10.1016/j.plaphy.2024.109034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/28/2023] [Revised: 07/30/2024] [Accepted: 08/08/2024] [Indexed: 09/05/2024]
Abstract
Soil salinity is detrimental to plant growth and remains a major threat to crop productivity of the world. Plants employ various physiological and molecular mechanisms to maintain growth under salt stress. Identification of genes and genetic loci underlying plant salt tolerance holds the key to breeding salt tolerant crops. CIPK-CBL pathways regulate adaptive responses of plants (especially ion transport) to abiotic stresses via fine-tuned Ca2+ signal transduction. In this study, we showed that over-expression of OsCIPK17 in Arabidopsis enhanced primary root elongation under salt stress, which is in a Ca2+ dependent manner. Further investigation revealed that, under salt stress, OsCIPK17 transcript level was significantly induced and its protein moved from the cytosol to the tonoplast. Using both Y2H and BiFC, tonoplast-localised OsCBL2 and OsCBL3 were shown to interact with OsCIPK17. Interestingly, over-expressing salt-induced OsCBL2 or OsCBL3 in Arabidopsis led to enhanced primary root elongation under salt stress. In this process, OsCIPK17 was shown recruited to the tonoplast (similar to the effect of salt stress). Furthermore, transgenic Arabidopsis lines individually over-expressing OsCIPK17, OsCBL2 and OsCBL3 all demonstrated larger biomass and less Na + accumulation in the shoot under salt stress. All data combined suggest that OsCIPK17- OsCBL2/3 module is a major component of shoot Na+ exclusion and therefore plant salt tolerance, which is through enhanced Na + compartmentation into the vacuole in the root. OsCIPK17 and OsCBL2/3 are therefore potential genetic targets that can be used for delivering salt tolerant rice cultivars.
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Affiliation(s)
- Xin Qin
- Ministry of Education Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, Lanzhou, 730000, China; Key Laboratory of Gene Editing for Breeding, Gansu Province, Lanzhou 730000, China
| | - Xiaohua Zhang
- Ministry of Education Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, Lanzhou, 730000, China; Key Laboratory of Gene Editing for Breeding, Gansu Province, Lanzhou 730000, China
| | - Chenyujie Ma
- Ministry of Education Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, Lanzhou, 730000, China; Key Laboratory of Gene Editing for Breeding, Gansu Province, Lanzhou 730000, China
| | - Xue Yang
- Jiayuguan Ecological and Environmental Monitoring Center, Jiayuguan 735100, China
| | - Yibo Hu
- Ministry of Education Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, Lanzhou, 730000, China; Key Laboratory of Gene Editing for Breeding, Gansu Province, Lanzhou 730000, China
| | - Yuan Liu
- Ministry of Education Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, Lanzhou, 730000, China; Key Laboratory of Gene Editing for Breeding, Gansu Province, Lanzhou 730000, China
| | - Yunfei Hu
- Ministry of Education Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, Lanzhou, 730000, China; Key Laboratory of Gene Editing for Breeding, Gansu Province, Lanzhou 730000, China
| | - Dan Wang
- Ministry of Education Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, Lanzhou, 730000, China; Key Laboratory of Gene Editing for Breeding, Gansu Province, Lanzhou 730000, China
| | - Xiaodong Lv
- Ministry of Education Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, Lanzhou, 730000, China; Key Laboratory of Gene Editing for Breeding, Gansu Province, Lanzhou 730000, China
| | - Chao Wang
- College of Life Sciences, Shaoxing University, Shaoxing 312000, China
| | - Jianxin Shou
- Ministry of Education Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, Lanzhou, 730000, China; College of Life Sciences, Shaoxing University, Shaoxing 312000, China.
| | - Bo Li
- Ministry of Education Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, Lanzhou, 730000, China; Key Laboratory of Gene Editing for Breeding, Gansu Province, Lanzhou 730000, China.
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Durbha SR, Siromani N, Jaldhani V, Krishnakanth T, Thuraga V, Neeraja CN, Subrahmanyam D, Sundaram RM. Dynamics of starch formation and gene expression during grain filling and its possible influence on grain quality. Sci Rep 2024; 14:6743. [PMID: 38509120 PMCID: PMC10954615 DOI: 10.1038/s41598-024-57010-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2024] [Accepted: 03/13/2024] [Indexed: 03/22/2024] Open
Abstract
In rice, grain filling is a crucial stage where asynchronous filling of the pollinated spikelet's of the panicle occurs. It can influence both grain quality and yield. In rice grain, starch is the dominant component and contains amylose and amylopectin. Amylose content is the chief cooking quality parameter, however, rice varieties having similar amylose content varied in other parameters. Hence, in this study, a set of varieties varying in yield (04) and another set (12) of varieties that are similar in amylose content with variation in gel consistency and alkali spreading value were used. Panicles were collected at various intervals and analysed for individual grain weight and quantities of amylose and amylopectin. Gas exchange parameters were measured in varieties varying in yield. Upper branches of the panicles were collected from rice varieties having similar amylose content and were subjected to gene expression analysis with fourteen gene specific primers of starch synthesis. Results indicate that grain filling was initiated simultaneously in multiple branches. Amylose and amylopectin quantities increased with the increase in individual grain weight. However, the pattern of regression lines of amylose and amylopectin percentages with increase in individual grain weight varied among the varieties. Gas exchange parameters like photosynthetic rate, stomatal conductance, intercellular CO2 and transpiration rate decreased with the increase in grain filling period in both good and poor yielding varieties. However, they decreased more in poor yielders. Expression of fourteen genes varied among the varieties and absence of SBE2b can be responsible for medium or soft gel consistency.
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Affiliation(s)
- Sanjeeva Rao Durbha
- ICAR-Indian Institute of Rice Research, Rajendranagar, Hyderabad, 500030, India.
| | - N Siromani
- ICAR-Indian Institute of Rice Research, Rajendranagar, Hyderabad, 500030, India
| | - V Jaldhani
- ICAR-Indian Institute of Rice Research, Rajendranagar, Hyderabad, 500030, India
| | - T Krishnakanth
- ICAR-Indian Institute of Rice Research, Rajendranagar, Hyderabad, 500030, India
| | - Vishnukiran Thuraga
- ICAR-Indian Institute of Rice Research, Rajendranagar, Hyderabad, 500030, India
| | - C N Neeraja
- ICAR-Indian Institute of Rice Research, Rajendranagar, Hyderabad, 500030, India
| | - D Subrahmanyam
- ICAR-Indian Institute of Rice Research, Rajendranagar, Hyderabad, 500030, India
| | - R M Sundaram
- ICAR-Indian Institute of Rice Research, Rajendranagar, Hyderabad, 500030, India
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Lu S, Chen Y, Wang S, Han B, Zhao C, Xue P, Zhang Y, Fang H, Wang B, Cao Y. Combined metabolomic and transcriptomic analysis reveals key components of OsCIPK17 overexpression improves drought tolerance in rice. FRONTIERS IN PLANT SCIENCE 2023; 13:1043757. [PMID: 36699859 PMCID: PMC9868928 DOI: 10.3389/fpls.2022.1043757] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/14/2022] [Accepted: 12/20/2022] [Indexed: 06/17/2023]
Abstract
Oryza Sativa is one of the most important food crops in China, which is easily affected by drought during its growth and development. As a member of the calcium signaling pathway, CBL-interacting protein kinase (CIPK) plays an important role in plant growth and development as well as environmental stress. However, there is no report on the function and mechanism of OsCIPK17 in rice drought resistance. We combined transcriptional and metabonomic analysis to clarify the specific mechanism of OsCIPK17 in response to rice drought tolerance. The results showed that OsCIPK17 improved drought resistance of rice by regulating deep roots under drought stress; Response to drought by regulating the energy metabolism pathway and controlling the accumulation of citric acid in the tricarboxylic acid (TCA) cycle; Our exogenous experiments also proved that OsCIPK17 responds to citric acid, and this process involves the auxin metabolism pathway; Exogenous citric acid can improve the drought resistance of overexpression plants. Our research reveals that OsCIPK17 positively regulates rice drought resistance and participates in the accumulation of citric acid in the TCA cycle, providing new insights for rice drought resistance.
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Affiliation(s)
| | | | | | | | | | | | | | | | - Baohua Wang
- *Correspondence: Baohua Wang, ; Yunying Cao,
| | - Yunying Cao
- *Correspondence: Baohua Wang, ; Yunying Cao,
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Gao C, Lu S, Zhou R, Wang Z, Li Y, Fang H, Wang B, Chen M, Cao Y. The OsCBL8-OsCIPK17 Module Regulates Seedling Growth and Confers Resistance to Heat and Drought in Rice. Int J Mol Sci 2022; 23:12451. [PMID: 36293306 PMCID: PMC9604039 DOI: 10.3390/ijms232012451] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2022] [Revised: 09/26/2022] [Accepted: 10/11/2022] [Indexed: 12/01/2023] Open
Abstract
The calcium signaling pathway is critical for plant growth, development, and response to external stimuli. The CBL-CIPK pathway has been well characterized as a calcium-signaling pathway. However, in most reports, only a single function for this module has been described. Here, we examined multiple functions of this module. CIPK showed a similar distribution to that of CBL, and OsCBL and OsCIPK families were retained after experiencing whole genome duplication events through the phylogenetic and synteny analysis. This study found that OsCBL8 negatively regulated rice seed germination and seedling growth by interacting with OsCIPK17 with overexpression and gene editing mutant plants as materials combining plant phenotype, physiological indicators and transcriptome sequencing. This process is likely mediated by OsPP2C77, which is a member of the ABA signaling pathway. In addition, OsCBL mediated the targeting of OsNAC77 and OsJAMYB by OsCIPK17, thus conferring resistance to high temperatures and pathogens in rice. Our work reveals a unique signaling pathway, wherein OsCBL8 interacts with OsCIPK17 and provides rice with multiple resistance while also regulating seedling growth.
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Affiliation(s)
- Cong Gao
- College of Life Sciences, Nantong University, Nantong 226007, China
- National Key Laboratory of Plant Molecular Genetics, CAS Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology & Ecology, Chinese Academy of Sciences, Shanghai 200032, China
| | - Shuai Lu
- College of Life Sciences, Nantong University, Nantong 226007, China
| | - Rong Zhou
- College of Life Sciences, Nantong University, Nantong 226007, China
| | - Zihui Wang
- College of Life Sciences, Nantong University, Nantong 226007, China
| | - Yi Li
- College of Life Sciences, Nantong University, Nantong 226007, China
| | - Hui Fang
- College of Life Sciences, Nantong University, Nantong 226007, China
| | - Baohua Wang
- College of Life Sciences, Nantong University, Nantong 226007, China
| | - Moxian Chen
- State Key Laboratory of Crop Biology, College of Life Science, Shandong Agricultural University, Taian 271000, China
| | - Yunying Cao
- College of Life Sciences, Nantong University, Nantong 226007, China
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