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Su P, Wang D, Wang P, Gao Y, Jia H, Hou J, Wu L. In vitro regeneration, photomorphogenesis and light signaling gene expression in Hydrangea quercifolia cv. 'Harmony' under different LED environments. PLANTA 2024; 259:71. [PMID: 38353793 DOI: 10.1007/s00425-024-04335-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/23/2023] [Accepted: 01/07/2024] [Indexed: 02/16/2024]
Abstract
MAIN CONCLUSION Plant growth regulators, sucrose concentration, and light quality significantly impact in vitro regeneration of 'Harmony'. Blue light promotes photomorphogenesis by enhancing light energy utilization, adjusting transcription of light signal genes, and altering hormone levels. Hydrangea quercifolia cv. 'Harmony', celebrated for lush green foliage and clusters of white flowers, has been extensively researched for its regenerative properties. Regeneration in stem segments, leaves, and petioles is facilitated by exogenous auxin and cytokinins (CTKs), with the concentration of sucrose (SC) being a key determinant for shoot regeneration from leaves. The study also highlights the significant impact of light conditions on photomorphogenesis. With an increase in the proportion of red (R) light, there is an inhibitory effect, leading to a reduction in leaf area, a decrease in the quantum yield of PSII (ΦPSII), and an increase in non-photochemical quenching (ΦNPQ) and non-regulated energy dissipation in PSII (ΦNO). Conversely, blue (B) light enhances growth, characterized by an increase in leaf area, elevated ΦPSII, and stable ΦNPQ and ΦNO levels. Additionally, B light induces the upregulation of HqCRYs, HqHY5-like, HqXTH27-like, and HqPHYs genes, along with an increase in endogenous CTKs levels, which positively influence photomorphogenesis independent of HqHY5-like regulation. This light condition also suppresses the synthesis of endogenous gibberellins (GA) and brassinosteroids (BR), further facilitating photomorphogenesis. In essence, B light is fundamental in expediting photomorphogenesis in 'Harmony', demonstrating the vital role in plant growth and development.
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Affiliation(s)
- Pengfei Su
- The Center for Ion Beam Bioengineering & Green Agriculture, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, 230031, Anhui, People's Republic of China
- School of Life Science, University of Science and Technology of China, Hefei, 230026, Anhui, People's Republic of China
| | - Dacheng Wang
- The Center for Ion Beam Bioengineering & Green Agriculture, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, 230031, Anhui, People's Republic of China
- School of Life Science, University of Science and Technology of China, Hefei, 230026, Anhui, People's Republic of China
| | - Ping Wang
- The Center for Ion Beam Bioengineering & Green Agriculture, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, 230031, Anhui, People's Republic of China
| | - Yameng Gao
- The Center for Ion Beam Bioengineering & Green Agriculture, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, 230031, Anhui, People's Republic of China
| | - Huiling Jia
- The Center for Ion Beam Bioengineering & Green Agriculture, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, 230031, Anhui, People's Republic of China
| | - Jinyan Hou
- The Center for Ion Beam Bioengineering & Green Agriculture, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, 230031, Anhui, People's Republic of China.
| | - Lifang Wu
- The Center for Ion Beam Bioengineering & Green Agriculture, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, 230031, Anhui, People's Republic of China.
- School of Life Science, University of Science and Technology of China, Hefei, 230026, Anhui, People's Republic of China.
- Zhongke Taihe Experimental Station, Taihe, 236626, Anhui, China.
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2
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Lee YR, Ko KS, Lee HE, Lee ES, Han K, Yoo JY, Vu BN, Choi HN, Lee YN, Hong JC, Lee KO, Kim DS. CRISPR/Cas9-Mediated HY5 Gene Editing Reduces Growth Inhibition in Chinese Cabbage ( Brassica rapa) under ER Stress. Int J Mol Sci 2023; 24:13105. [PMID: 37685921 PMCID: PMC10487758 DOI: 10.3390/ijms241713105] [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: 07/20/2023] [Revised: 08/17/2023] [Accepted: 08/21/2023] [Indexed: 09/10/2023] Open
Abstract
Various stresses can affect the quality and yield of crops, including vegetables. In this study, CRISPR/Cas9 technology was employed to examine the role of the ELONGATED HYPOCOTYL 5 (HY5) gene in influencing the growth of Chinese cabbage (Brassica rapa). Single guide RNAs (sgRNAs) were designed to target the HY5 gene, and deep-sequencing analysis confirmed the induction of mutations in the bZIP domain of the gene. To investigate the response of Chinese cabbage to endoplasmic reticulum (ER) stress, plants were treated with tunicamycin (TM). Both wild-type and hy5 mutant plants showed increased growth inhibition with increasing TM concentration. However, the hy5 mutant plants displayed less severe growth inhibition compared to the wild type. Using nitroblue tetrazolium (NBT) and 3,3'-diaminobenzidine (DAB) staining methods, we determined the amount of reactive oxygen species (ROS) produced under ER stress conditions, and found that the hy5 mutant plants generated lower levels of ROS compared to the wild type. Under ER stress conditions, the hy5 mutant plants exhibited lower expression levels of UPR- and cell death-related genes than the wild type. These results indicate that CRISPR/Cas9-mediated editing of the HY5 gene can mitigate growth inhibition in Chinese cabbage under stresses, improving the quality and yield of crops.
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Affiliation(s)
- Ye Rin Lee
- Vegetable Research Division, National Institute of Horticultural and Herbal Science, Rural Development Administration, Wanju-gun 55365, Republic of Korea; (Y.R.L.); (H.E.L.); (E.S.L.); (K.H.)
| | - Ki Seong Ko
- Plant Molecular Biology and Biotechnology Research Center (PMBBRC), Gyeongsang National University, 501 Jinju-daero, Jinju 52828, Republic of Korea; (K.S.K.); (J.Y.Y.); (J.C.H.)
| | - Hye Eun Lee
- Vegetable Research Division, National Institute of Horticultural and Herbal Science, Rural Development Administration, Wanju-gun 55365, Republic of Korea; (Y.R.L.); (H.E.L.); (E.S.L.); (K.H.)
| | - Eun Su Lee
- Vegetable Research Division, National Institute of Horticultural and Herbal Science, Rural Development Administration, Wanju-gun 55365, Republic of Korea; (Y.R.L.); (H.E.L.); (E.S.L.); (K.H.)
| | - Koeun Han
- Vegetable Research Division, National Institute of Horticultural and Herbal Science, Rural Development Administration, Wanju-gun 55365, Republic of Korea; (Y.R.L.); (H.E.L.); (E.S.L.); (K.H.)
| | - Jae Yong Yoo
- Plant Molecular Biology and Biotechnology Research Center (PMBBRC), Gyeongsang National University, 501 Jinju-daero, Jinju 52828, Republic of Korea; (K.S.K.); (J.Y.Y.); (J.C.H.)
| | - Bich Ngoc Vu
- Division of Life Science, Division of Applied Life Sciences (BK4 Program), Gyeongsang National University, 501 Jinju-daero, Jinju 52828, Republic of Korea; (B.N.V.); (H.N.C.); (Y.N.L.)
| | - Ha Na Choi
- Division of Life Science, Division of Applied Life Sciences (BK4 Program), Gyeongsang National University, 501 Jinju-daero, Jinju 52828, Republic of Korea; (B.N.V.); (H.N.C.); (Y.N.L.)
| | - Yoo Na Lee
- Division of Life Science, Division of Applied Life Sciences (BK4 Program), Gyeongsang National University, 501 Jinju-daero, Jinju 52828, Republic of Korea; (B.N.V.); (H.N.C.); (Y.N.L.)
| | - Jong Chan Hong
- Plant Molecular Biology and Biotechnology Research Center (PMBBRC), Gyeongsang National University, 501 Jinju-daero, Jinju 52828, Republic of Korea; (K.S.K.); (J.Y.Y.); (J.C.H.)
- Division of Life Science, Division of Applied Life Sciences (BK4 Program), Gyeongsang National University, 501 Jinju-daero, Jinju 52828, Republic of Korea; (B.N.V.); (H.N.C.); (Y.N.L.)
| | - Kyun Oh Lee
- Plant Molecular Biology and Biotechnology Research Center (PMBBRC), Gyeongsang National University, 501 Jinju-daero, Jinju 52828, Republic of Korea; (K.S.K.); (J.Y.Y.); (J.C.H.)
- Division of Life Science, Division of Applied Life Sciences (BK4 Program), Gyeongsang National University, 501 Jinju-daero, Jinju 52828, Republic of Korea; (B.N.V.); (H.N.C.); (Y.N.L.)
| | - Do Sun Kim
- Vegetable Research Division, National Institute of Horticultural and Herbal Science, Rural Development Administration, Wanju-gun 55365, Republic of Korea; (Y.R.L.); (H.E.L.); (E.S.L.); (K.H.)
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3
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Chen Y, Yang H, Tang B, Li F, Xie Q, Chen G, Hu Z. The AP2/ERF transcription factor SlERF.J2 functions in hypocotyl elongation and plant height in tomato. PLANT CELL REPORTS 2023; 42:371-383. [PMID: 36512035 DOI: 10.1007/s00299-022-02963-x] [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: 09/26/2022] [Accepted: 12/05/2022] [Indexed: 06/17/2023]
Abstract
Our findings indicated that the SlERF.J2-IAA23 module integrates hormonal signals to regulate hypocotyl elongation and plant height in tomato. Light and phytohormones can synergistically regulate photomorphogenesis-related hypocotyl elongation and plant height in tomato. AP2/ERF family genes have been extensively demonstrated to play a role in light signaling and various hormones. In this study, we identified a novel AP2/ERF family gene in tomato, SlERF.J2. Overexpression of SlERF.J2 inhibits hypocotyl elongation and plant height. However, the plant height in the slerf.j2ko knockout mutant was not significantly changed compared with the WT. we found that hypocotyl cell elongation and plant height were regulated by a network involving light, auxin and gibberellin signaling, which is mediated by regulatory relationship between SlERF.J2 and IAA23. SlERF.J2 protein could bind to IAA23 promoter and inhibit its expression. In addition, light-dark alternation can activate the transcription of SlERF.J2 and promote the function of SlERF.J2 in photomorphogenesis. Our findings indicated that the SlERF.J2-IAA23 module integrates hormonal signals to regulate hypocotyl elongation and plant height in tomato.
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Affiliation(s)
- Yanan Chen
- Laboratory of Molecular Biology of Tomato, Bioengineering College, Chongqing University, Chongqing, People's Republic of China
| | - Hong Yang
- Laboratory of Molecular Biology of Tomato, Bioengineering College, Chongqing University, Chongqing, People's Republic of China
| | - Boyan Tang
- Laboratory of Molecular Biology of Tomato, Bioengineering College, Chongqing University, Chongqing, People's Republic of China
| | - Fenfen Li
- Laboratory of Molecular Biology of Tomato, Bioengineering College, Chongqing University, Chongqing, People's Republic of China
| | - Qiaoli Xie
- Laboratory of Molecular Biology of Tomato, Bioengineering College, Chongqing University, Chongqing, People's Republic of China
| | - Guoping Chen
- Laboratory of Molecular Biology of Tomato, Bioengineering College, Chongqing University, Chongqing, People's Republic of China.
- Room 523, Bioengineering College, Chongqing University, Campus B, 174 Shapingba Main Street, Chongqing, 400030, People's Republic of China.
| | - Zongli Hu
- Laboratory of Molecular Biology of Tomato, Bioengineering College, Chongqing University, Chongqing, People's Republic of China.
- Room 521, Bioengineering College, Chongqing University, Campus B, 174 Shapingba Main Street, Chongqing, 400030, People's Republic of China.
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4
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Stafen CF, Kleine-Vehn J, Maraschin FDS. Signaling events for photomorphogenic root development. TRENDS IN PLANT SCIENCE 2022; 27:1266-1282. [PMID: 36057533 DOI: 10.1016/j.tplants.2022.08.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/28/2021] [Revised: 07/26/2022] [Accepted: 08/02/2022] [Indexed: 06/15/2023]
Abstract
A germinating seedling incorporates environmental signals such as light into developmental outputs. Light is not only a source of energy, but also a central coordinative signal in plants. Traditionally, most research focuses on aboveground organs' response to light; therefore, our understanding of photomorphogenesis in roots is relatively scarce. However, root development underground is highly responsive to light signals from the shoot and understanding these signaling mechanisms will give a better insight into early seedling development. Here, we review the central light signaling hubs and their role in root growth promotion of Arabidopsis thaliana seedlings.
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Affiliation(s)
- Cássia Fernanda Stafen
- PPGBM - Programa de Pós-Graduação em Genética e Biologia Molecular, Universidade Federal do Rio Grande do Sul - UFRGS, Porto Alegre, RS, Brazil
| | - Jürgen Kleine-Vehn
- Institute of Biology II, Chair of Molecular Plant Physiology (MoPP), University of Freiburg, Freiburg, Germany; Center for Integrative Biological Signalling Studies (CIBSS), University of Freiburg, 79104 Freiburg, Germany
| | - Felipe Dos Santos Maraschin
- PPGBM - Programa de Pós-Graduação em Genética e Biologia Molecular, Universidade Federal do Rio Grande do Sul - UFRGS, Porto Alegre, RS, Brazil; Departamento de Botânica, Universidade Federal do Rio Grande do Sul - UFRGS, Porto Alegre, RS, Brazil.
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5
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The Role of Plant Progesterone in Regulating Growth, Development, and Biotic/Abiotic Stress Responses. Int J Mol Sci 2022; 23:ijms231810945. [PMID: 36142864 PMCID: PMC9501841 DOI: 10.3390/ijms231810945] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2022] [Revised: 09/16/2022] [Accepted: 09/17/2022] [Indexed: 11/17/2022] Open
Abstract
Progesterone is a steroid hormone that performs important functions in mammals. However, studies on its physiological functions in plants have gradually increased in recent years. Therefore, this review summarizes the regulatory functions of progesterone on plant growth and development, as well as its response to stress. Moreover, the plant metabolic processes of progesterone are also discussed. Overall, progesterone is ubiquitous in plants and can regulate numerous plant physiological processes at low concentrations. Since progesterone shares similar characteristics with plant hormones, it is expected to become a candidate for plant hormone. However, most of the current research on progesterone in plants is limited to the physiological level, and more molecular level research is needed to clarify progesterone signaling pathways.
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6
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Zhang X, Fang T, Huang Y, Sun W, Cai S. Transcriptional regulation of photomorphogenesis in seedlings of Brassica napus under different light qualities. PLANTA 2022; 256:77. [PMID: 36088613 DOI: 10.1007/s00425-022-03991-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2022] [Accepted: 09/02/2022] [Indexed: 06/15/2023]
Abstract
This study displayed the transcriptional regulation network of key regulators and downstream pathway in seedling morphogenesis of Brassica napus under different light quality. Plants undergo photomorphogenesis upon the presence of light, mediated by different light (e.g., blue, red, and far-red) signaling pathways. Although the light signaling pathway has been well documented in Arabidopsis, the underlying mechanisms were studied to a less extent in other plant species including Brassica napus. In this study, we investigated the effect of different light qualities (white, blue, red, and far-red light) on the hypocotyl elongation in B. napus, and performed the transcriptomic analysis of seedlings in response to different light qualities. The results showed that hypocotyl elongation was slightly inhibited by red light, while it was strongly inhibited by blue/far-red light. Transcriptome analysis identified 9748 differentially expressed genes (DEGs) among treatments. Gene ontology (GO) enrichment analysis of DEGs showed that light-responsive and photosynthesis-related genes were highly expressed in response to blue/far-red light rather than in red light. Furthermore, the key genes in light signaling (i.e., PHYB, HY5, HYH, HFR1, and PIF3) exhibited distinct expression patterns between blue/far-red and red light treatments. In addition, subgenome dominant expression of homoeologous genes were observed for some genes, such as PHYA, PHYB, HFR1, and BBXs. The current study displayed a comprehensive dissection of light-mediated transcriptional regulation network, including light signaling, phytohormone, and cell elongation/modification, which improved the understanding on the underlying mechanism of light-regulated hypocotyl growth in B. napus.
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Affiliation(s)
- Xin Zhang
- Institute of Crop Science, Zhejiang University, Hangzhou, 310058, China
| | - Tianmeng Fang
- Institute of Crop Science, Zhejiang University, Hangzhou, 310058, China
| | - Yuqing Huang
- Institute of Crop Science, Hangzhou Academy of Agricultural Sciences, Hangzhou, 310024, China
| | - Wenyue Sun
- Institute of Crop Science, Zhejiang University, Hangzhou, 310058, China
| | - Shengguan Cai
- Institute of Crop Science, Zhejiang University, Hangzhou, 310058, China.
- Shandong (Linyi) Institute of Modern Agriculture, Zhejiang University, Linyi, 276000, China.
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7
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Hu WJ, Liu TW, Zhu CQ, Wu Q, Chen L, Lu HL, Jiang CK, Wei J, Shen GX, Zheng HL. Physiological, Proteomic Analysis, and Calcium-Related Gene Expression Reveal Taxus wallichiana var. mairei Adaptability to Acid Rain Stress Under Various Calcium Levels. FRONTIERS IN PLANT SCIENCE 2022; 13:845107. [PMID: 35386672 PMCID: PMC8978443 DOI: 10.3389/fpls.2022.845107] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/29/2021] [Accepted: 02/07/2022] [Indexed: 06/11/2023]
Abstract
As one of the serious environmental problems worldwide, acid rain (AR) has always caused continuous damage to the forestry ecosystem. Studies have shown that AR can leach calcium ions from plants and soil. Calcium (Ca) is also a crucial regulator of the plant stress response, whereas there are few reports on how Ca regulates the response of AR-resistant woody plants to AR stress. In this study, by setting different exogenous Ca levels, we study the physiological and molecular mechanism of Ca in regulating the Taxus wallichiana var. mairei response to AR stress. Our results showed that low Ca level leads to photosynthesis, and antioxidant defense system decreases in T. wallichiana var. mairei leaves; however, these negative effects could be reversed at high Ca level. In addition, proteomic analyses identified 44 differentially expressed proteins in different Ca level treatments of T. wallichiana var. mairei under AR stress. These proteins were classified into seven groups, which include metabolic process, photosynthesis and energy pathway, cell rescue and defense, transcription and translation, protein modification and degradation, signal transduction, etc. Furthermore, the study found that low Ca level leads to an obvious increase of Ca-related gene expression under AR stress in T. wallichiana var. mairei using qRT-PCR analyses and however can be reversed at high Ca level. These findings would enrich and extend the Ca signaling pathways of AR stress in AR-resistant woody plants and are expected to have important theoretical and practical significance in revealing the mechanism of woody plants tolerating AR stress and protecting forestry ecosystem in soil environment under different Ca levels.
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Affiliation(s)
- Wen-Jun Hu
- Zhejiang Academy of Agricultural Sciences, Hangzhou, China
| | - Ting-Wu Liu
- School of Life Science, Huaiyin Normal University, Huai’an, China
| | - Chun-Quan Zhu
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou, China
| | - Qian Wu
- Key Laboratory for Subtropical Wetland Ecosystem Research of Ministry of Education (MOE), College of the Environment and Ecology, Xiamen University, Xiamen, China
| | - Lin Chen
- Zhejiang Academy of Agricultural Sciences, Hangzhou, China
| | - Hong-Ling Lu
- Zhejiang Academy of Agricultural Sciences, Hangzhou, China
| | - Chen-Kai Jiang
- Zhejiang Academy of Agricultural Sciences, Hangzhou, China
| | - Jia Wei
- Zhejiang Academy of Agricultural Sciences, Hangzhou, China
| | - Guo-Xin Shen
- Zhejiang Academy of Agricultural Sciences, Hangzhou, China
| | - Hai-Lei Zheng
- Key Laboratory for Subtropical Wetland Ecosystem Research of Ministry of Education (MOE), College of the Environment and Ecology, Xiamen University, Xiamen, China
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8
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Jiang L, Dong C, Liu T, Shi Y, Wang H, Tao Z, Liang Y, Lian J. Improved Functional Expression of Cytochrome P450s in Saccharomyces cerevisiae Through Screening a cDNA Library From Arabidopsis thaliana. Front Bioeng Biotechnol 2021; 9:764851. [PMID: 34957066 PMCID: PMC8696027 DOI: 10.3389/fbioe.2021.764851] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2021] [Accepted: 11/24/2021] [Indexed: 01/08/2023] Open
Abstract
Cytochrome P450 enzymes (P450s) are a superfamily of heme-thiolate proteins widely existing in various organisms and play a key role in the metabolic network and secondary metabolism. However, the low expression levels and activities have become the biggest challenge for P450s studies. To improve the functional expression of P450s in Saccharomyces cerevisiae, an Arabidopsis thaliana cDNA library was expressed in the betaxanthin-producing yeast strain, which functioned as a biosensor for high throughput screening. Three new target genes AtGRP7, AtMSBP1, and AtCOL4 were identified to improve the functional expression of CYP76AD1 in yeast, with accordingly the accumulation of betaxanthin increased for 1.32-, 1.86-, and 1.10-fold, respectively. In addition, these three targets worked synergistically/additively to improve the production of betaxanthin, representing a total of 2.36-fold improvement when compared with the parent strain. More importantly, these genes were also determined to effectively increase the activity of another P450 enzyme (CYP736A167), catalyzing the hydroxylation of α-santalene to produce Z-α-santalol. Simultaneous overexpression of AtGRP7, AtMSBP1, and AtCOL4 increased α-santalene to Z-α-santalol conversion rate for more than 2.97-fold. The present study reported a novel strategy to improve the functional expression of P450s in S. cerevisiae and promises the construction of platform yeast strains for the production of natural products.
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Affiliation(s)
- Lihong Jiang
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, China
| | - Chang Dong
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, China.,Hangzhou Global Scientific and Technological Innovation Center, Zhejiang University, Hangzhou, China
| | - Tengfei Liu
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, China
| | - Yi Shi
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, China
| | - Handing Wang
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, China.,Hangzhou Global Scientific and Technological Innovation Center, Zhejiang University, Hangzhou, China
| | - Zeng Tao
- Ministry of Agriculture Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Institute of Biotechnology, Zhejiang University, Hangzhou, China
| | - Yan Liang
- Ministry of Agriculture Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Institute of Biotechnology, Zhejiang University, Hangzhou, China
| | - Jiazhang Lian
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, China.,Hangzhou Global Scientific and Technological Innovation Center, Zhejiang University, Hangzhou, China
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Han H, Xu F, Li Y, Yu L, Fu M, Liao Y, Yang X, Zhang W, Ye J. Genome-wide characterization of bZIP gene family identifies potential members involved in flavonoids biosynthesis in Ginkgo biloba L. Sci Rep 2021; 11:23420. [PMID: 34862430 PMCID: PMC8642526 DOI: 10.1038/s41598-021-02839-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2021] [Accepted: 11/18/2021] [Indexed: 11/28/2022] Open
Abstract
Ginkgo biloba L. is an ancient relict plant with rich pharmacological activity and nutritional value, and its main physiologically active components are flavonoids and terpene lactones. The bZIP gene family is one of the largest gene families in plants and regulates many processes including pathogen defense, secondary metabolism, stress response, seed maturation, and flower development. In this study, genome-wide distribution of the bZIP transcription factors was screened from G. biloba database in silico analysis. A total of 40 bZIP genes were identified in G. biloba and were divided into 10 subclasses. GbbZIP members in the same group share a similar gene structure, number of introns and exons, and motif distribution. Analysis of tissue expression pattern based on transcriptome indicated that GbbZIP08 and GbbZIP15 were most highly expressed in mature leaf. And the expression level of GbbZIP13 was high in all eight tissues. Correlation analysis and phylogenetic tree analysis suggested that GbbZIP08 and GbbZIP15 might be involved in the flavonoid biosynthesis. The transcriptional levels of 20 GbbZIP genes after SA, MeJA, and low temperature treatment were analyzed by qRT-PCR. The expression level of GbbZIP08 was significantly upregulated under 4°C. Protein–protein interaction network analysis indicated that GbbZIP09 might participate in seed germination by interacting with GbbZIP32. Based on transcriptome and degradome data, we found that 32 out of 117 miRNAs were annotated to 17 miRNA families. The results of this study may provide a theoretical foundation for the functional validation of GbbZIP genes in the future.
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Affiliation(s)
- Huan Han
- College of Horticulture and Gardening, Yangtze University, Jingzhou, 434025, Hubei, China
| | - Feng Xu
- College of Horticulture and Gardening, Yangtze University, Jingzhou, 434025, Hubei, China
| | - Yuting Li
- College of Horticulture and Gardening, Yangtze University, Jingzhou, 434025, Hubei, China
| | - Li Yu
- College of Horticulture and Gardening, Yangtze University, Jingzhou, 434025, Hubei, China
| | - Mingyue Fu
- College of Horticulture and Gardening, Yangtze University, Jingzhou, 434025, Hubei, China
| | - Yongling Liao
- College of Horticulture and Gardening, Yangtze University, Jingzhou, 434025, Hubei, China
| | - Xiaoyan Yang
- College of Horticulture and Gardening, Yangtze University, Jingzhou, 434025, Hubei, China
| | - Weiwei Zhang
- College of Horticulture and Gardening, Yangtze University, Jingzhou, 434025, Hubei, China. .,Hubei Key Laboratory of Economic Forest Germplasm Improvement and Resources Comprehensive Utilization, Hubei Collaborative Innovation Center for the Characteristic Resources Exploitation of Dabie Mountains, Huanggang Normal University, Huanggang, 438000, Hubei, China.
| | - Jiabao Ye
- College of Horticulture and Gardening, Yangtze University, Jingzhou, 434025, Hubei, China.
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10
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Bhagat PK, Verma D, Sharma D, Sinha AK. HY5 and ABI5 transcription factors physically interact to fine tune light and ABA signaling in Arabidopsis. PLANT MOLECULAR BIOLOGY 2021; 107:117-127. [PMID: 34490593 DOI: 10.1007/s11103-021-01187-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/2021] [Accepted: 08/27/2021] [Indexed: 05/25/2023]
Abstract
Cross-talk between light and ABA signaling is mediated by physical interaction between HY5 and ABI5 Arabidopsis. Plants undergo numerous transitions during their life-cycle and have developed a very complex network of signaling to integrate information from their surroundings to effectively survive in the ever-changing environment. Light signaling is one of the crucial factors that govern the plant growth and development from the very first step of that is from seedling germination to the flowering. Similarly, Abscisic acid (ABA) signaling transduces the signals from external unfavorable condition to the internal developmental pathways and is crucial for regulation of seed maturation, dormancy germination and early seedling development. These two fundamental factors coordinately regulate plant wellbeing, but the underlying molecular mechanisms that drive this regulation are poorly understood. Here, we identified that two bZIP transcription factors, ELONGATED HYPOCOTYLE 5 (HY5), a positive regulator of light signaling and ABA-INSENSITIVE 5 (ABI5), a positive regulator of ABA signaling interacts and integrates the two pathways together. Our phenotypic data suggest that ABI5 may act as a negative regulator during photomorphogenesis in contrast, HY5 acts as a positive regulator of ABA signaling in an ABA dependent manner. We further showed that over-expression of HY5 leads to ABA-hypersensitive phenotype and late flowering phenotype. Taken together, our data provides key insights regarding the mechanism of interaction between ABI5-HY5 that fine tunes the stress and developmental response in Arabidopsis.
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Affiliation(s)
| | - Deepanjali Verma
- National Institute of Plant Genome Research, New Delhi, 110067, India
| | - Deepika Sharma
- National Institute of Plant Genome Research, New Delhi, 110067, India
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11
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Jing Y, Guo Q, Lin R. The SNL-HDA19 histone deacetylase complex antagonizes HY5 activity to repress photomorphogenesis in Arabidopsis. THE NEW PHYTOLOGIST 2021; 229:3221-3236. [PMID: 33245784 DOI: 10.1111/nph.17114] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2020] [Accepted: 11/19/2020] [Indexed: 05/25/2023]
Abstract
Reprogramming of the transcriptome during photomorphogenesis requires dynamic changes in chromatin and distribution of histone modifications. However, the chromatin-based regulation of this process remains to be elucidated. Here, we identify the conserved SWI-INDEPENDENT3 LIKE (SNL)-HISTONE DEACETYLASE19 (HDA19) deacetylase complex, including HDA19 and SNL1-SNL6, as a negative regulator of the light signaling pathway. Light-repression of HDA19 and SNLs expression is mediated by photoreceptors. HDA19 and SNLs are required for histone deacetylation and chromatin inactivation of PHYA gene. We further examined the interaction between SNL-HDA19 complex and ELONGATED HYPOCOTYL5 (HY5), and their antagonistic regulation on the expressions of target genes. The HDA19 deacetylase complex is recruited by HY5 to the chromatin regions of two positive light signaling genes, HY5 and B-BOX CONTAINING PROTEIN 22 (BBX22), thereby reduces the accessibility and histone acetylation and represses their expression. HDA19, SNL1, and HY5 associate with the same regulatory regions of HY5 and BBX22, and HY5 binding to these loci is enhanced upon SNL-HDA19 dysfunction. Our study reveals a crucial role for the HDA19 deacetylase complex in light signaling and demonstrates that the functional interplay between chromatin regulators and transcription factors regulates photomorphogenetic responses to the changing light environments.
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Affiliation(s)
- Yanjun Jing
- Key Laboratory of Photobiology, Institute of Botany, Chinese Academy of Sciences, Beijing, 100093, China
| | - Qiang Guo
- Key Laboratory of Photobiology, Institute of Botany, Chinese Academy of Sciences, Beijing, 100093, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Rongcheng Lin
- Key Laboratory of Photobiology, Institute of Botany, Chinese Academy of Sciences, Beijing, 100093, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
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12
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Ponnu J, Hoecker U. Illuminating the COP1/SPA Ubiquitin Ligase: Fresh Insights Into Its Structure and Functions During Plant Photomorphogenesis. FRONTIERS IN PLANT SCIENCE 2021; 12:662793. [PMID: 33841486 PMCID: PMC8024647 DOI: 10.3389/fpls.2021.662793] [Citation(s) in RCA: 45] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2021] [Accepted: 03/04/2021] [Indexed: 05/07/2023]
Abstract
CONSTITUTIVE PHOTOMORPHOGENIC 1 functions as an E3 ubiquitin ligase in plants and animals. Discovered originally in Arabidopsis thaliana, COP1 acts in a complex with SPA proteins as a central repressor of light-mediated responses in plants. By ubiquitinating and promoting the degradation of several substrates, COP1/SPA regulates many aspects of plant growth, development and metabolism. In contrast to plants, human COP1 acts as a crucial regulator of tumorigenesis. In this review, we discuss the recent important findings in COP1/SPA research including a brief comparison between COP1 activity in plants and humans.
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Burko Y, Gaillochet C, Seluzicki A, Chory J, Busch W. Local HY5 Activity Mediates Hypocotyl Growth and Shoot-to-Root Communication. PLANT COMMUNICATIONS 2020; 1:100078. [PMID: 32995748 PMCID: PMC7521671 DOI: 10.1016/j.xplc.2020.100078] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/29/2019] [Revised: 05/08/2020] [Accepted: 05/12/2020] [Indexed: 05/18/2023]
Abstract
Plants optimize their growth in fluctuating environments using information acquired by different organs. This information is then transmitted through the rest of the plant using both short- and long-distance signals, including hormones and mobile proteins. Although a few of these signals have been characterized, long-distance signaling is not well understood in plants. Recently, the light-regulated transcription factor HY5 was reported to move from the shoot to the root to regulate root growth. We generated a cell-type specifically expressed HY5 fusion protein that could not be detected outside the tissue in which it was targeted. By expressing this DOF-HY5 protein in specific cell types of the hypocotyl, we showed that its local activity was sufficient to regulate hypocotyl growth. We also found that, although DOF-HY5 was expressed specifically in the shoot and not detected in the roots, it could rescue hy5 growth defects in primary roots but not in lateral roots. We therefore conclude that HY5 protein mobility is not required in the hypocotyl or for shoot-to-root communication. Our results indicate that a signal downstream of, or in parallel with, HY5 in the shoot is mobile and links shoot and root growth.
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Affiliation(s)
- Yogev Burko
- Howard Hughes Medical Institute, Salk Institute for Biological Studies, La Jolla, CA 92037, USA
- Plant Biology Laboratory, Salk Institute for Biological Studies, 10010 North Torrey Pines Road, La Jolla, CA 92037, USA
| | - Christophe Gaillochet
- Plant Biology Laboratory, Salk Institute for Biological Studies, 10010 North Torrey Pines Road, La Jolla, CA 92037, USA
| | - Adam Seluzicki
- Howard Hughes Medical Institute, Salk Institute for Biological Studies, La Jolla, CA 92037, USA
- Plant Biology Laboratory, Salk Institute for Biological Studies, 10010 North Torrey Pines Road, La Jolla, CA 92037, USA
| | - Joanne Chory
- Howard Hughes Medical Institute, Salk Institute for Biological Studies, La Jolla, CA 92037, USA
- Plant Biology Laboratory, Salk Institute for Biological Studies, 10010 North Torrey Pines Road, La Jolla, CA 92037, USA
| | - Wolfgang Busch
- Plant Biology Laboratory, Salk Institute for Biological Studies, 10010 North Torrey Pines Road, La Jolla, CA 92037, USA
- Integrative Biology Laboratory, Salk Institute for Biological Studies, 10010 North Torrey Pines Road, La Jolla, CA 92037, USA
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Wang W, Chen Q, Botella JR, Guo S. Beyond Light: Insights Into the Role of Constitutively Photomorphogenic1 in Plant Hormonal Signaling. FRONTIERS IN PLANT SCIENCE 2019; 10:557. [PMID: 31156657 PMCID: PMC6532413 DOI: 10.3389/fpls.2019.00557] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2019] [Accepted: 04/12/2019] [Indexed: 05/20/2023]
Abstract
Light is an important environmental factor with profound effects in plant growth and development. Constitutively photomorphogenic1 (COP1) is a vital component of the light signaling pathway as a negative regulator of photomorphogenesis. Although the role of COP1 in light signaling has been firmly established for some time, recent studies have proven that COP1 is also a crucial part of multiple plant hormonal regulatory pathways. In this article, we review the available evidence involving COP1 in hormone signaling, its molecular mechanisms, and its contribution to the complicated regulatory network linking light and plant hormone signaling.
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Affiliation(s)
- Wenjing Wang
- Key Laboratory of Plant Stress Biology, School of Life Sciences, Henan University, Kaifeng, China
- Department of Biology and Food Science, Shangqiu Normal University, Shangqiu, China
| | - Qingbin Chen
- Key Laboratory of Plant Stress Biology, School of Life Sciences, Henan University, Kaifeng, China
- State Key Laboratory of Cotton Biology, School of Life Sciences, Henan University, Kaifeng, China
| | - José Ramón Botella
- Plant Genetic Engineering Laboratory, School of Agriculture and Food Sciences, The University of Queensland, Brisbane, QLD, Australia
- *Correspondence: José Ramón Botella,
| | - Siyi Guo
- Key Laboratory of Plant Stress Biology, School of Life Sciences, Henan University, Kaifeng, China
- State Key Laboratory of Cotton Biology, School of Life Sciences, Henan University, Kaifeng, China
- Siyi Guo,
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15
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von Sivers L, Jaspar H, Johst B, Roese M, Bitterlich M, Franken P, Kühn C. Brassinosteroids Affect the Symbiosis Between the AM Fungus Rhizoglomus irregularis and Solanaceous Host Plants. FRONTIERS IN PLANT SCIENCE 2019; 10:571. [PMID: 31156660 PMCID: PMC6530493 DOI: 10.3389/fpls.2019.00571] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2019] [Accepted: 04/15/2019] [Indexed: 05/21/2023]
Abstract
Together with several proteins involved in brassinosteroid (BR) signaling and synthesis, the membrane steroid binding protein 1 (MSBP1) was identified within the interactome of the sucrose transporter of tomato (SlSUT2). We asked whether MSBP1 is also involved in BR signaling as assumed for the AtMSBP1 protein from Arabidopsis and whether it impacts root colonization with arbuscular mycorrhizal (AM) fungi in a similar way as shown previously for SlSUT2. In addition, we asked whether brassinosteroids per se affect efficiency of root colonization by AM fungi. We carried out a set of experiments with transgenic tobacco plants with increased and decreased MSBP1 expression levels. We investigated the plant and the mycorrhizal phenotype of these transgenic plants and tested the involvement of MSBP1 in BR metabolism by application of epi-brassinolide and brassinazole, an inhibitor of BR biosynthesis. We show that the phenotype of the transgenic tobacco plants with increased or reduced MSBP1 expression is consistent with an inhibitory role of MSBP1 in BR signaling. MSBP1 overexpression could be mimicked by brassinazole treatment. Interestingly, manipulation of MSBP1 expression in transgenic tobacco plants not only affected plant growth and development, but also the host plant responses toward colonization with AM fungi, as well as arbuscular architecture. Moreover, we observed that brassinosteroids indeed have a direct impact on the nutrient exchange in AM symbiosis and on the biomass production of colonized host plants. Furthermore, arbuscular morphology is affected by changes in MSBP1 expression and brassinolide or brassinazole treatments. We conclude that host plant growth responses and nutrient exchange within the symbiosis with AM fungi is controlled by brassinosteroids and might be impeded by the MSBP1 protein.
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Affiliation(s)
- Lea von Sivers
- Plant Physiology, Institute of Biology, Humboldt University of Berlin, Berlin, Germany
| | - Hannah Jaspar
- Plant Physiology, Institute of Biology, Humboldt University of Berlin, Berlin, Germany
| | - Bettina Johst
- Plant Physiology, Institute of Biology, Humboldt University of Berlin, Berlin, Germany
| | - Michael Roese
- Plant Physiology, Institute of Biology, Humboldt University of Berlin, Berlin, Germany
| | - Michael Bitterlich
- Leibniz-Institute of Vegetable and Ornamental Crops, Großbeeren, Germany
| | - Philipp Franken
- Erfurt Research Centre for Horticultural Crops, University of Applied Sciences Erfurt, Erfurt, Germany
| | - Christina Kühn
- Plant Physiology, Institute of Biology, Humboldt University of Berlin, Berlin, Germany
- *Correspondence: Christina Kühn, ;
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16
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Gruszka D. Crosstalk of the Brassinosteroid Signalosome with Phytohormonal and Stress Signaling Components Maintains a Balance between the Processes of Growth and Stress Tolerance. Int J Mol Sci 2018; 19:ijms19092675. [PMID: 30205610 PMCID: PMC6163518 DOI: 10.3390/ijms19092675] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2018] [Revised: 08/22/2018] [Accepted: 09/07/2018] [Indexed: 12/25/2022] Open
Abstract
Brassinosteroids (BRs) are a class of phytohormones, which regulate various processes during plant life cycle. Intensive studies conducted with genetic, physiological and molecular approaches allowed identification of various components participating in the BR signaling—from the ligand perception, through cytoplasmic signal transduction, up to the BR-dependent gene expression, which is regulated by transcription factors and chromatin modifying enzymes. The identification of new components of the BR signaling is an ongoing process, however an emerging view of the BR signalosome indicates that this process is interconnected at various stages with other metabolic pathways. The signaling crosstalk is mediated by the BR signaling proteins, which function as components of the transmembrane BR receptor, by a cytoplasmic kinase playing a role of the major negative regulator of the BR signaling, and by the transcription factors, which regulate the BR-dependent gene expression and form a complicated regulatory system. This molecular network of interdependencies allows a balance in homeostasis of various phytohormones to be maintained. Moreover, the components of the BR signalosome interact with factors regulating plant reactions to environmental cues and stress conditions. This intricate network of interactions enables a rapid adaptation of plant metabolism to constantly changing environmental conditions.
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Affiliation(s)
- Damian Gruszka
- Department of Genetics, Faculty of Biology and Environment Protection, University of Silesia, Jagiellonska 28, 40-032 Katowice, Poland.
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17
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Witzel K, Matros A, Møller ALB, Ramireddy E, Finnie C, Peukert M, Rutten T, Herzog A, Kunze G, Melzer M, Kaspar-Schoenefeld S, Schmülling T, Svensson B, Mock HP. Plasma membrane proteome analysis identifies a role of barley membrane steroid binding protein in root architecture response to salinity. PLANT, CELL & ENVIRONMENT 2018; 41:1311-1330. [PMID: 29385242 DOI: 10.1111/pce.13154] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/22/2017] [Revised: 01/18/2018] [Accepted: 01/19/2018] [Indexed: 05/19/2023]
Abstract
Although the physiological consequences of plant growth under saline conditions have been well described, understanding the core mechanisms conferring plant salt adaptation has only started. We target the root plasma membrane proteomes of two barley varieties, cvs. Steptoe and Morex, with contrasting salinity tolerance. In total, 588 plasma membrane proteins were identified by mass spectrometry, of which 182 were either cultivar or salinity stress responsive. Three candidate proteins with increased abundance in the tolerant cv. Morex were involved either in sterol binding (a GTPase-activating protein for the adenosine diphosphate ribosylation factor [ZIGA2], and a membrane steroid binding protein [MSBP]) or in phospholipid synthesis (phosphoethanolamine methyltransferase [PEAMT]). Overexpression of barley MSBP conferred salinity tolerance to yeast cells, whereas the knock-out of the heterologous AtMSBP1 increased salt sensitivity in Arabidopsis. Atmsbp1 plants showed a reduced number of lateral roots under salinity, and root-tip-specific expression of barley MSBP in Atmsbp1 complemented this phenotype. In barley, an increased abundance of MSBP correlates with reduced root length and lateral root formation as well as increased levels of auxin under salinity being stronger in the tolerant cv. Morex. Hence, we concluded the involvement of MSBP in phytohormone-directed adaptation of root architecture in response to salinity.
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Affiliation(s)
- Katja Witzel
- Leibniz Institute of Plant Genetics and Crop Plant Research, Corrensstraße 3, 06466, Stadt Seeland, Gatersleben, Germany
- Leibniz Institute of Vegetable and Ornamental Crops, Theodor-Echtermeyer-Weg 1, 14979, Großbeeren, Germany
| | - Andrea Matros
- Leibniz Institute of Plant Genetics and Crop Plant Research, Corrensstraße 3, 06466, Stadt Seeland, Gatersleben, Germany
| | - Anders L B Møller
- Technical University of Denmark, Søltofts Plads, Building 224, 2800, Kongens Lyngby, Denmark
| | - Eswarayya Ramireddy
- Institute of Biology/Applied Genetics, Dahlem Centre of Plant Sciences, Free University of Berlin, Albrecht-Thaer-Weg 6, 14195, Berlin, Germany
| | - Christine Finnie
- Technical University of Denmark, Søltofts Plads, Building 224, 2800, Kongens Lyngby, Denmark
| | - Manuela Peukert
- Leibniz Institute of Plant Genetics and Crop Plant Research, Corrensstraße 3, 06466, Stadt Seeland, Gatersleben, Germany
| | - Twan Rutten
- Leibniz Institute of Plant Genetics and Crop Plant Research, Corrensstraße 3, 06466, Stadt Seeland, Gatersleben, Germany
| | - Andreas Herzog
- Biosystems Engineering, Fraunhofer Institute for Factory Operation and Automation, Joseph-von-Fraunhofer-Straße 1, 39106, Magdeburg, Germany
| | - Gotthard Kunze
- Leibniz Institute of Plant Genetics and Crop Plant Research, Corrensstraße 3, 06466, Stadt Seeland, Gatersleben, Germany
| | - Michael Melzer
- Leibniz Institute of Plant Genetics and Crop Plant Research, Corrensstraße 3, 06466, Stadt Seeland, Gatersleben, Germany
| | - Stephanie Kaspar-Schoenefeld
- Leibniz Institute of Plant Genetics and Crop Plant Research, Corrensstraße 3, 06466, Stadt Seeland, Gatersleben, Germany
| | - Thomas Schmülling
- Institute of Biology/Applied Genetics, Dahlem Centre of Plant Sciences, Free University of Berlin, Albrecht-Thaer-Weg 6, 14195, Berlin, Germany
| | - Birte Svensson
- Technical University of Denmark, Søltofts Plads, Building 224, 2800, Kongens Lyngby, Denmark
| | - Hans-Peter Mock
- Leibniz Institute of Plant Genetics and Crop Plant Research, Corrensstraße 3, 06466, Stadt Seeland, Gatersleben, Germany
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18
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Serivichyaswat PT, Susila H, Ahn JH. Elongated Hypocotyl 5-Homolog (HYH) Negatively Regulates Expression of the Ambient Temperature-Responsive MicroRNA Gene MIR169. FRONTIERS IN PLANT SCIENCE 2017; 8:2087. [PMID: 29270188 PMCID: PMC5725467 DOI: 10.3389/fpls.2017.02087] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2017] [Accepted: 11/22/2017] [Indexed: 05/12/2023]
Abstract
Arabidopsis microRNA169 (miR169) is an ambient temperature-responsive microRNA that plays an important role in stress responses and the floral transition. However, the transcription factors that regulate the expression of MIR169 have remained unknown. In this study, we show that Elongated Hypocotyl 5-Homolog (HYH) directly binds to the promoter of MIR169a and negatively regulates its expression. Absolute quantification identified MIR169a as the major locus producing miR169. GUS reporter assays revealed that the deletion of a 498-bp fragment (-1,505 to -1,007, relative to the major transcriptional start site) of MIR169a abolished its ambient temperature-responsive expression. DNA-affinity chromatography followed by liquid chromatography-mass spectrometry analysis identified transcription factor HYH as a trans-acting factor that binds to the 498-bp promoter fragment of pri-miR169a. Electrophoretic mobility shift assays and chromatin immunoprecipitation-quantitative PCR demonstrated that the HYH.2 protein, a predominant isoform of HYH, directly associated with a G-box-like motif in the 498-bp fragment of pri-miR169a. Higher enrichment of HYH.2 protein on the promoter region of MIR169a was seen at 23°C, consistent with the presence of more HYH.2 protein in the cell at the temperature. Transcript levels of pri-miR169a increased in hyh mutants and decreased in transgenic plants overexpressing HYH. Consistent with the negative regulation of MIR169a by HYH, the diurnal levels of HYH mRNA and pri-miR169a showed opposite patterns. Taken together, our results suggest that HYH is a transcription factor that binds to a G-box-like motif in the MIR169a promoter and negatively regulates ambient temperature-responsive expression of MIR169a at higher temperatures in Arabidopsis.
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Gangappa SN, Botto JF. The Multifaceted Roles of HY5 in Plant Growth and Development. MOLECULAR PLANT 2016; 9:1353-1365. [PMID: 27435853 DOI: 10.1016/j.molp.2016.07.002] [Citation(s) in RCA: 327] [Impact Index Per Article: 40.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/27/2016] [Revised: 06/27/2016] [Accepted: 07/08/2016] [Indexed: 05/18/2023]
Abstract
ELONGATED HYPOCOTYL5 (HY5), a member of the bZIP transcription factor family, inhibits hypocotyl growth and lateral root development, and promotes pigment accumulation in a light-dependent manner in Arabidopsis. Recent research on its role in different processes such as hormone, nutrient, abiotic stress (abscisic acid, salt, cold), and reactive oxygen species signaling pathways clearly places HY5 at the center of a transcriptional network hub. HY5 regulates the transcription of a large number of genes by directly binding to cis-regulatory elements. Recently, HY5 has also been shown to activate its own expression under both visible and UV-B light. Moreover, HY5 acts as a signal that moves from shoot to root to promote nitrate uptake and root growth. Here, we review recent advances on HY5 research in diverse aspects of plant development and highlight still open questions that need to be addressed in the near future for a complete understanding of its function in plant signaling and beyond.
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Affiliation(s)
- Sreeramaiah N Gangappa
- Department of Biological and Environmental Sciences, Gothenburg University, Gothenburg 40530, Sweden.
| | - Javier F Botto
- IFEVA, UBA, CONICET, Facultad de Agronomía, Avenida San Martín 4453, C1417DSE Buenos Aires, Argentina.
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20
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Vanhaelewyn L, Prinsen E, Van Der Straeten D, Vandenbussche F. Hormone-controlled UV-B responses in plants. JOURNAL OF EXPERIMENTAL BOTANY 2016; 67:4469-82. [PMID: 27401912 DOI: 10.1093/jxb/erw261] [Citation(s) in RCA: 70] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
Ultraviolet B (UV-B) light is a portion of solar radiation that has significant effects on the development and metabolism of plants. Effects of UV-B on plants can be classified into photomorphogenic effects and stress effects. These effects largely rely on the control of, and interactions with, hormonal pathways. The fairly recent discovery of the UV-B-specific photoreceptor UV RESISTANCE LOCUS 8 (UVR8) allowed evaluation of the role of downstream hormones, leading to the identification of connections with auxin and gibberellin. Moreover, a substantial overlap between UVR8 and phytochrome responses has been shown, suggesting that part of the responses caused by UVR8 are under PHYTOCHROME INTERACTING FACTOR control. UV-B effects can also be independent of UVR8, and affect different hormonal pathways. UV-B affects hormonal pathways in various ways: photochemically, affecting biosynthesis, transport, and/or signaling. This review concludes that the effects of UV-B on hormonal regulation can be roughly divided in two: inhibition of growth-promoting hormones; and the enhancement of environmental stress-induced defense hormones.
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Affiliation(s)
- Lucas Vanhaelewyn
- Laboratory for Functional Plant Biology, Ghent University, KL Ledeganckstraat 35, B-9000 Gent, Belgium
| | - Els Prinsen
- Department of Biology, University of Antwerp, Groenenborgerlaan 171, B-2020 Antwerpen, Belgium
| | | | - Filip Vandenbussche
- Laboratory for Functional Plant Biology, Ghent University, KL Ledeganckstraat 35, B-9000 Gent, Belgium
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21
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Lindemann P. Steroidogenesis in plants--Biosynthesis and conversions of progesterone and other pregnane derivatives. Steroids 2015; 103:145-52. [PMID: 26282543 DOI: 10.1016/j.steroids.2015.08.007] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/19/2014] [Revised: 07/03/2015] [Accepted: 08/06/2015] [Indexed: 01/23/2023]
Abstract
In plants androstanes, estranes, pregnanes and corticoids have been described. Sometimes 17β-estradiol, androsterone, testosterone or progesterone were summarized as sex hormones. These steroids influence plant development: cell divisions, root and shoot growth, embryo growth, flowering, pollen tube growth and callus proliferation. First reports on the effect of applicated substances and of their endogenous occurrence date from the early twenties of the last century. This caused later on doubts on the identity of the compounds. Best investigated is the effect of progesterone. Main steps of the progesterone biosynthetic pathway have been analyzed in Digitalis. Cholesterol-side-chain-cleavage, pregnenolone and progesterone formation as well as the stereospecific reduction of progesterone are described and the corresponding enzymes are presented. Biosynthesis of androstanes, estranes and corticoids is discussed. Possible progesterone receptors and physiological reactions on progesterone application are reviewed.
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Affiliation(s)
- Peter Lindemann
- Institut für Pharmazie, Martin-Luther Universität Halle/Wittenberg, Hoher Weg 8, 06120 Halle, Germany.
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22
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Chai T, Zhou J, Liu J, Xing D. LSD1 and HY5 antagonistically regulate red light induced-programmed cell death in Arabidopsis. FRONTIERS IN PLANT SCIENCE 2015; 6:292. [PMID: 25999965 PMCID: PMC4419654 DOI: 10.3389/fpls.2015.00292] [Citation(s) in RCA: 49] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/12/2015] [Accepted: 04/10/2015] [Indexed: 05/18/2023]
Abstract
Programmed cell death (PCD) in plant is triggered by abiotic and biotic stress. Light-dependent PCD is unique to plants. Light-induced PCD also requires reactive oxygen species (ROS) and salicylic acid (SA). In this study, lesion simulating disease1 (LSD1) and elongated hypocotyl 5 (HY5) perform opposite roles to regulate excess red light (RL)-triggered PCD associated with ROS and SA production. Under RL, the lsd1 mutant released more ROS and SA and displayed a stronger cell death rate than the hy5 mutant. It was shown that active LSD1 converted into inactive form by changing the redox status of the plastoquinone pool, and HY5 interacted with phytochrome B (phyB) to promote PCD in response to RL. LSD1 inhibited the enhanced disease susceptibility 1 (EDS1) expression by upregulating SR1, whereas HY5 enhanced the enhanced EDS1 expression by binding to the G-box of the EDS1 promoter. This study suggested that LSD1 and HY5 antagonistically modulated EDS1-dependent ROS and SA signaling; thus, PCD was mediated in response to RL.
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Affiliation(s)
| | | | | | - Da Xing
- *Correspondence: Da Xing, MOE Key Laboratory of Laser Life Science and Institute of Laser Life Science, College of Biophotonics, South China Normal University, Shipai, Tianhe District, Guangzhou 510631, China
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23
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Wang ZY, Bai MY, Oh E, Zhu JY. Brassinosteroid signaling network and regulation of photomorphogenesis. Annu Rev Genet 2012; 46:701-24. [PMID: 23020777 DOI: 10.1146/annurev-genet-102209-163450] [Citation(s) in RCA: 303] [Impact Index Per Article: 25.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
In plants, the steroidal hormone brassinosteroid (BR) regulates numerous developmental processes, including photomorphogenesis. Genetic, proteomic, and genomic studies in Arabidopsis have illustrated a fully connected BR signal transduction pathway from the cell surface receptor kinase BRI1 to the BZR1 family of transcription factors. Genome-wide analyses of protein-DNA interactions have identified thousands of BZR1 target genes that link BR signaling to various cellular, metabolic, and developmental processes, as well as other signaling pathways. In controlling photomorphogenesis, BR signaling is highly integrated with the light, gibberellin, and auxin pathways through both direct interactions between signaling proteins and transcriptional regulation of key components of these pathways. BR signaling also cross talks with other receptor kinase pathways to modulate stomata development and innate immunity. The molecular connections in the BR signaling network demonstrate a robust steroid signaling system that has evolved in plants to orchestrate signal transduction, genome expression, metabolism, defense, and development.
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Affiliation(s)
- Zhi-Yong Wang
- Department of Plant Biology, Carnegie Institution for Science, Stanford, California 94305, USA.
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Trupkin SA, Mora-García S, Casal JJ. The cyclophilin ROC1 links phytochrome and cryptochrome to brassinosteroid sensitivity. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2012; 71:712-23. [PMID: 22463079 DOI: 10.1111/j.1365-313x.2012.05013.x] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Although multiple photoreceptors converge to control common aspects of seedling de-etiolation, we are relatively ignorant of the genes acting at or downstream of their signalling convergence. To address this issue we screened for mutants under a mixture of blue plus far-red light and identified roc1-1D. The roc1-1D mutant, showing elevated expression of the ROTAMASE CYCLOPHILIN 1 (ROC1/AtCYP18-3) gene, and partial loss-of function roc1 alleles, has defects in phytochrome A (phyA)-, cryptochrome 1 (cry1)- and phytochrome B (phyB)-mediated de-etiolation, including long hypocotyls under blue or far-red light. These mutants show elevated sensitivity to brassinosteroids in the light but not in the dark. Mutations at brassinosteroid signalling genes and the application of a brassinosteroid synthesis inhibitor eliminated the roc1 and roc1-D phenotypes. The roc1 and roc1-D mutants show altered patterns of phosphorylation of the transcription factor BES1, a known point of control of sensitivity to brassinosteroids, which correlate with the expression levels of genes directly targeted by BES1. We propose a model where perception of light by phyA, cry1 or phyB activates ROC1 (at least in part by enhancing its expression). This in turn reduces the intensity of brassinosteroid signalling and fine-tunes seedling de-etiolation.
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Affiliation(s)
- Santiago A Trupkin
- IFEVA, Facultad de Agronomía, Universidad de Buenos Aires and CONICET, 1417-Buenos Aires, Argentina
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Fan XY, Sun Y, Cao DM, Bai MY, Luo XM, Yang HJ, Wei CQ, Zhu SW, Sun Y, Chong K, Wang ZY. BZS1, a B-box protein, promotes photomorphogenesis downstream of both brassinosteroid and light signaling pathways. MOLECULAR PLANT 2012; 5:591-600. [PMID: 22535582 PMCID: PMC3709415 DOI: 10.1093/mp/sss041] [Citation(s) in RCA: 102] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/01/2011] [Accepted: 03/07/2012] [Indexed: 05/18/2023]
Abstract
Photomorphogenesis is controlled by multiple signaling pathways, including the light and brassinosteroid (BR) pathways. BR signaling activates the BZR1 transcription factor, which is required for suppressing photomorphogenesis in the dark. We identified a suppressor of the BR hypersensitive mutant bzr1-1D and named it bzr1-1D suppressor1-Dominant (bzs1-D). The bzs1-D mutation was caused by overexpression of a B-box zinc finger protein BZS1, which is transcriptionally repressed by BZR1. Overexpression of BZS1 causes de-etiolation in the dark, short hypocotyls in the light, reduced sensitivity to BR treatment, and repression of many BR-activated genes. Knockdown of BZS1 by co-suppression partly suppressed the short hypocotyl phenotypes of BR-deficient or insensitive mutants. These results support that BZS1 is a negative regulator of BR response. BZS1 overexpressors are hypersensitive to different wavelengths of light and loss of function of BZS1 reduces plant sensitivity to light and partly suppresses the constitutive photomorphogenesis 1 (cop1) mutant in the dark, suggesting a positive role in light response. BZS1 protein accumulates at an increased level after light treatment of dark-grown BZS1-OX plants and in the cop1 mutants, and BZS1 interacts with COP1 in vitro, suggesting that light regulates BZS1 through COP1-mediated ubiquitination and proteasomal degradation. These results demonstrate that BZS1 mediates the crosstalk between BR and light pathways.
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Affiliation(s)
- Xi-Ying Fan
- Institute of Botany, Chinese Academy of Sciences, Beijing
100093, China
- Institute of Molecular Cell Biology, College of Life
Science, Hebei Normal University, Shijiazhuang, Hebei 050016, China
- Graduate School of the Chinese Academy of Sciences,
Beijing 100049, China
| | - Yu Sun
- Institute of Molecular Cell Biology, College of Life
Science, Hebei Normal University, Shijiazhuang, Hebei 050016, China
| | - Dong-Mei Cao
- Institute of Botany, Chinese Academy of Sciences, Beijing
100093, China
- Institute of Horticulture, Shanxi Academy of Agriculture
Sciences, Shanxi 030031, China
| | - Ming-Yi Bai
- Department of Plant Biology, Carnegie Institution for
Science, Stanford, CA 94305, USA
| | - Xiao-Min Luo
- Institute of Botany, Chinese Academy of Sciences, Beijing
100093, China
| | - Hong-Juan Yang
- Institute of Botany, Chinese Academy of Sciences, Beijing
100093, China
| | - Chuang-Qi Wei
- Institute of Molecular Cell Biology, College of Life
Science, Hebei Normal University, Shijiazhuang, Hebei 050016, China
| | - Sheng-Wei Zhu
- Institute of Botany, Chinese Academy of Sciences, Beijing
100093, China
| | - Ying Sun
- Institute of Molecular Cell Biology, College of Life
Science, Hebei Normal University, Shijiazhuang, Hebei 050016, China
| | - Kang Chong
- Institute of Botany, Chinese Academy of Sciences, Beijing
100093, China
| | - Zhi-Yong Wang
- Department of Plant Biology, Carnegie Institution for
Science, Stanford, CA 94305, USA
- To whom correspondence should be addressed.
E-mail
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