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Zhang R, Dong Y, Li Y, Ren G, Chen C, Jin X. SLs signal transduction gene CsMAX2 of cucumber positively regulated to salt, drought and ABA stress in Arabidopsis thaliana L. Gene 2023; 864:147282. [PMID: 36822526 DOI: 10.1016/j.gene.2023.147282] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2022] [Revised: 01/09/2023] [Accepted: 02/08/2023] [Indexed: 02/23/2023]
Abstract
Recent studies have demonstrated that strigolactones (SLs) participate in the regulation of stress adaptation, however, the mechanisms remain elusive. MAX2 (MORE AXILLARY GROWTH2) is the key gene in the signal transduction pathway of SLs. This study aimed to clone and functionally characterize the CsMAX2 gene of cucumber in Arabidopsis. The results showed that the expression levels of the CsMAX2 gene changed significantly after salt, drought, and ABA stresses in cucumber. Moreover, the overexpression of CsMAX2 promoted stress tolerance and increased the germination rate and root length of Arabidopsis thaliana. Meanwhile, the content of chlorophyll increased and malondialdehyde decreased in CsMAX2 OE lines under salt and drought stresses. Additionally, the expression levels of stress-related marker genes, especially AREB1 and COR15A, were significantly upregulated under salt stress, while the expression levels of all genes were upregulated under drought stress, except ABI4 and ABI5 genes. The level of NCED3 continued to rise under both salt and drought stresses. In addition, D10 and D27 gene expression level also showed a continuous increase under ABA stress. The result suggested the interaction between SL and ABA in the process of adapting to stress. Overall, CsMAX2 could positively regulate salt, drought, and ABA stress resistance, and this process correlated with ABA transduction.
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Affiliation(s)
- Runming Zhang
- College of Life Science and Technology, Harbin Normal University, Harbin, China
| | - Yanlong Dong
- College of Life Science and Technology, Harbin Normal University, Harbin, China; Horticulture Branch, Heilongjiang Academy of Agricultural Sciences, Harbin, China
| | - Yuanyuan Li
- College of Life Science and Technology, Harbin Normal University, Harbin, China
| | - Guangyue Ren
- College of Life Science and Technology, Harbin Normal University, Harbin, China
| | - Chao Chen
- College of Life Science and Technology, Harbin Normal University, Harbin, China
| | - Xiaoxia Jin
- College of Life Science and Technology, Harbin Normal University, Harbin, China.
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Molecular Aspects of MicroRNAs and Phytohormonal Signaling in Response to Drought Stress: A Review. Curr Issues Mol Biol 2022; 44:3695-3710. [PMID: 36005149 PMCID: PMC9406886 DOI: 10.3390/cimb44080253] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2022] [Revised: 07/29/2022] [Accepted: 08/10/2022] [Indexed: 11/16/2022] Open
Abstract
Phytohormones play an essential role in plant growth and development in response to environmental stresses. However, plant hormones require a complex signaling network combined with other signaling pathways to perform their proper functions. Thus, multiple phytohormonal signaling pathways are a prerequisite for understanding plant defense mechanism against stressful conditions. MicroRNAs (miRNAs) are master regulators of eukaryotic gene expression and are also influenced by a wide range of plant development events by suppressing their target genes. In recent decades, the mechanisms of phytohormone biosynthesis, signaling, pathways of miRNA biosynthesis and regulation were profoundly characterized. Recent findings have shown that miRNAs and plant hormones are integrated with the regulation of environmental stress. miRNAs target several components of phytohormone pathways, and plant hormones also regulate the expression of miRNAs or their target genes inversely. In this article, recent developments related to molecular linkages between miRNAs and phytohormones were reviewed, focusing on drought stress.
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Hoang XLT, Chuong NN, Hoa TTK, Doan H, Van PHP, Trang LDM, Huyen PNT, Le DT, Tran LSP, Thao NP. The Drought-Mediated Soybean GmNAC085 Functions as a Positive Regulator of Plant Response to Salinity. Int J Mol Sci 2021; 22:8986. [PMID: 34445699 PMCID: PMC8396556 DOI: 10.3390/ijms22168986] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Revised: 08/13/2021] [Accepted: 08/17/2021] [Indexed: 01/01/2023] Open
Abstract
Abiotic stress factors, such as drought and salinity, are known to negatively affect plant growth and development. To cope with these adverse conditions, plants have utilized certain defense mechanisms involved in various aspects, including morphological, biochemical and molecular alterations. Particularly, a great deal of evidence for the biological importance of the plant-specific NAM, ATAF1/2, CUC2 (NAC) transcription factors (TFs) in plant adaptation to abiotic stress conditions has been reported. A previous in planta study conducted by our research group demonstrated that soybean (Glycine max) GmNAC085 mediated drought resistance in transgenic Arabidopsis plants. In this study, further characterization of GmNAC085 function in association with salt stress was performed. The findings revealed that under this condition, transgenic soybean plants overexpressing GmNAC085 displayed better germination rates than wild-type plants. In addition, biochemical and transcriptional analyses showed that the transgenic plants acquired a better defense system against salinity-induced oxidative stress, with higher activities of antioxidant enzymes responsible for scavenging hydrogen peroxide or superoxide radicals. Higher transcript levels of several key stress-responsive genes involved in the proline biosynthetic pathway, sodium ion transporter and accumulation of dehydrins were also observed, indicating better osmoprotection and more efficient ion regulation capacity in the transgenic lines. Taken together, these findings and our previous report indicate that GmNAC085 may play a role as a positive regulator in plant adaptation to drought and salinity conditions.
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Affiliation(s)
- Xuan Lan Thi Hoang
- Applied Biotechnology for Crop Development Research Unit, School of Biotechnology, International University, Quarter 6, Linh Trung Ward, Thu Duc City, Ho Chi Minh City 700000, Vietnam; (X.L.T.H.); (N.N.C.); (T.T.K.H.); (H.D.); (P.H.P.V.); (L.D.M.T.); (P.N.T.H.)
- Vietnam National University, Thu Duc City, Ho Chi Minh City 700000, Vietnam
| | - Nguyen Nguyen Chuong
- Applied Biotechnology for Crop Development Research Unit, School of Biotechnology, International University, Quarter 6, Linh Trung Ward, Thu Duc City, Ho Chi Minh City 700000, Vietnam; (X.L.T.H.); (N.N.C.); (T.T.K.H.); (H.D.); (P.H.P.V.); (L.D.M.T.); (P.N.T.H.)
- Vietnam National University, Thu Duc City, Ho Chi Minh City 700000, Vietnam
| | - Tran Thi Khanh Hoa
- Applied Biotechnology for Crop Development Research Unit, School of Biotechnology, International University, Quarter 6, Linh Trung Ward, Thu Duc City, Ho Chi Minh City 700000, Vietnam; (X.L.T.H.); (N.N.C.); (T.T.K.H.); (H.D.); (P.H.P.V.); (L.D.M.T.); (P.N.T.H.)
- Vietnam National University, Thu Duc City, Ho Chi Minh City 700000, Vietnam
| | - Hieu Doan
- Applied Biotechnology for Crop Development Research Unit, School of Biotechnology, International University, Quarter 6, Linh Trung Ward, Thu Duc City, Ho Chi Minh City 700000, Vietnam; (X.L.T.H.); (N.N.C.); (T.T.K.H.); (H.D.); (P.H.P.V.); (L.D.M.T.); (P.N.T.H.)
- Vietnam National University, Thu Duc City, Ho Chi Minh City 700000, Vietnam
| | - Pham Hoang Phuong Van
- Applied Biotechnology for Crop Development Research Unit, School of Biotechnology, International University, Quarter 6, Linh Trung Ward, Thu Duc City, Ho Chi Minh City 700000, Vietnam; (X.L.T.H.); (N.N.C.); (T.T.K.H.); (H.D.); (P.H.P.V.); (L.D.M.T.); (P.N.T.H.)
- Vietnam National University, Thu Duc City, Ho Chi Minh City 700000, Vietnam
| | - Le Dang Minh Trang
- Applied Biotechnology for Crop Development Research Unit, School of Biotechnology, International University, Quarter 6, Linh Trung Ward, Thu Duc City, Ho Chi Minh City 700000, Vietnam; (X.L.T.H.); (N.N.C.); (T.T.K.H.); (H.D.); (P.H.P.V.); (L.D.M.T.); (P.N.T.H.)
- Vietnam National University, Thu Duc City, Ho Chi Minh City 700000, Vietnam
| | - Pham Ngoc Thai Huyen
- Applied Biotechnology for Crop Development Research Unit, School of Biotechnology, International University, Quarter 6, Linh Trung Ward, Thu Duc City, Ho Chi Minh City 700000, Vietnam; (X.L.T.H.); (N.N.C.); (T.T.K.H.); (H.D.); (P.H.P.V.); (L.D.M.T.); (P.N.T.H.)
- Vietnam National University, Thu Duc City, Ho Chi Minh City 700000, Vietnam
| | - Dung Tien Le
- Agricultural Genetics Institute, Vietnam Academy of Agricultural Sciences, Pham Van Dong Str., Hanoi 100000, Vietnam;
| | - Lam-Son Phan Tran
- Department of Plant and Soil Science, Institute of Genomics for Crop Abiotic Stress Tolerance, Texas Tech University, Lubbock, TX 79409, USA
| | - Nguyen Phuong Thao
- Applied Biotechnology for Crop Development Research Unit, School of Biotechnology, International University, Quarter 6, Linh Trung Ward, Thu Duc City, Ho Chi Minh City 700000, Vietnam; (X.L.T.H.); (N.N.C.); (T.T.K.H.); (H.D.); (P.H.P.V.); (L.D.M.T.); (P.N.T.H.)
- Vietnam National University, Thu Duc City, Ho Chi Minh City 700000, Vietnam
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