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Yin F, Zhao M, Gong L, Nan H, Ma W, Lu M, An H. Genome-wide identification of Rosa roxburghii CML family genes identifies an RrCML13-RrGGP2 interaction involved in calcium-mediated regulation of ascorbate biosynthesis. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2024; 214:108874. [PMID: 38981208 DOI: 10.1016/j.plaphy.2024.108874] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/25/2024] [Revised: 06/20/2024] [Accepted: 06/22/2024] [Indexed: 07/11/2024]
Abstract
Calmodulin-like proteins (CMLs) are an essential family of calcium sensors involved in multiple Ca2+-mediated cellular processes in plants. Rosa roxburghii Tratt, known for the abundance of L-ascorbic acid (AsA) in its fruits, is widely distributed in calcium-rich soil of the karst region in southwestern China. The aim of this study was to identify key CMLs that respond to exogenous Ca2+ levels and regulate AsA biosynthesis in R. roxburghii. A genome-wide scan revealed the presence of 41 RrCML genes with 1-4 EF-hand motif (s) unevenly distributed across the 7 chromosomes of R. roxburghii. qRT-PCR analysis revealed that RrCML13, RrCML10, and RrCML36 responded significantly to exogenous Ca2+ treatment, and RrCML13 was positively correlated with GDP-L-galactose phosphorylase encoding gene (RrGGP2) expression and AsA content in the developing fruit. Overexpression of RrCML13 in fruits and roots significantly promoted the transcription of RrGGP2 and the accumulation of AsA, while virus-induced silencing of RrCML13 reduced the transcription of RrGGP2 and the content of AsA. Furthermore, Moreover, the yeast two-hybrid and bimolecular fluorescence complementation (BiFC) analysis confirmed the interaction between RrCML13 and RrGGP2 proteins, indicating that RrCML13 plays a regulatory role in calcium-mediated AsA biosynthesis. This study enhances our understanding of R. roxburghii CMLs and sheds light on the calcium-mediated regulation of AsA biosynthesis.
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Affiliation(s)
- Fei Yin
- Engineering Research Center of National Forestry and Grassland Administration for Rosa roxburghii, Agricultural College, Guizhou University, Guiyang, China
| | - Manqiu Zhao
- Engineering Research Center of National Forestry and Grassland Administration for Rosa roxburghii, Agricultural College, Guizhou University, Guiyang, China
| | - Lisha Gong
- Engineering Research Center of National Forestry and Grassland Administration for Rosa roxburghii, Agricultural College, Guizhou University, Guiyang, China
| | - Hong Nan
- Engineering Research Center of National Forestry and Grassland Administration for Rosa roxburghii, Agricultural College, Guizhou University, Guiyang, China
| | - Wentao Ma
- Engineering Research Center of National Forestry and Grassland Administration for Rosa roxburghii, Agricultural College, Guizhou University, Guiyang, China
| | - Min Lu
- Engineering Research Center of National Forestry and Grassland Administration for Rosa roxburghii, Agricultural College, Guizhou University, Guiyang, China
| | - Huaming An
- Engineering Research Center of National Forestry and Grassland Administration for Rosa roxburghii, Agricultural College, Guizhou University, Guiyang, China.
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Bao Z, Chen Y, Zhang Z, Yang H, Yan R, Zhu D. Heat stress-induced NO enhanced perylenequinone biosynthesis of Shiraia sp. via calcium signaling pathway. Appl Microbiol Biotechnol 2024; 108:317. [PMID: 38700737 PMCID: PMC11068690 DOI: 10.1007/s00253-024-13142-1] [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: 10/20/2023] [Revised: 03/18/2024] [Accepted: 04/09/2024] [Indexed: 05/06/2024]
Abstract
Perylenequinones (PQs) are natural photosensitizing compounds used as photodynamic therapy, and heat stress (HS) is the main limiting factor of mycelial growth and secondary metabolism of fungi. This study aimed to unravel the impact of HS-induced Ca2+ and the calcium signaling pathway on PQ biosynthesis of Shiraia sp. Slf14(w). Meanwhile, the intricate interplay between HS-induced NO and Ca2+ and the calcium signaling pathway was investigated. The outcomes disclosed that Ca2+ and the calcium signaling pathway activated by HS could effectively enhance the production of PQs in Shiraia sp. Slf14(w). Further investigations elucidated the specific mechanism through which NO signaling molecules induced by HS act upon the Ca2+/CaM (calmodulin) signaling pathway, thus propelling PQ biosynthesis in Shiraia sp. Slf14(w). This was substantiated by decoding the downstream positioning of the CaM/CaN (calcineurin) pathway in relation to NO through comprehensive analyses encompassing transcript levels, enzyme assays, and the introduction of chemical agents. Concurrently, the engagement of Ca2+ and the calcium signaling pathway in heat shock signaling was also evidenced. The implications of our study underscore the pivotal role of HS-induced Ca2+ and the calcium signaling pathway, which not only participate in heat shock signal transduction but also play an instrumental role in promoting PQ biosynthesis. Consequently, our study not only enriches our comprehension of the mechanisms driving HS signaling transduction in fungi but also offers novel insights into the PQ synthesis paradigm within Shiraia sp. Slf14(w). KEY POINTS: • The calcium signaling pathway was proposed to participate in PQ biosynthesis under HS. • HS-induced NO was revealed to act upon the calcium signaling pathway for the first time.
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Affiliation(s)
- Zhuanying Bao
- Key Laboratory of Protection and Utilization of Subtropic Plant Resources of Jiangxi Province, Jiangxi Normal University, Nanchang, 330022, China
- Key Lab of Bioprocess Engineering of Jiangxi Province, College of Life Sciences, Jiangxi Science and Technology Normal University, Nanchang, 330013, China
| | - Yunni Chen
- Key Laboratory of Protection and Utilization of Subtropic Plant Resources of Jiangxi Province, Jiangxi Normal University, Nanchang, 330022, China
| | - Zhibin Zhang
- Key Laboratory of Protection and Utilization of Subtropic Plant Resources of Jiangxi Province, Jiangxi Normal University, Nanchang, 330022, China
| | - Huilin Yang
- Key Laboratory of Protection and Utilization of Subtropic Plant Resources of Jiangxi Province, Jiangxi Normal University, Nanchang, 330022, China
| | - Riming Yan
- Key Laboratory of Protection and Utilization of Subtropic Plant Resources of Jiangxi Province, Jiangxi Normal University, Nanchang, 330022, China
| | - Du Zhu
- Key Laboratory of Protection and Utilization of Subtropic Plant Resources of Jiangxi Province, Jiangxi Normal University, Nanchang, 330022, China.
- Key Lab of Bioprocess Engineering of Jiangxi Province, College of Life Sciences, Jiangxi Science and Technology Normal University, Nanchang, 330013, China.
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Kscheschinski B, Kramar M, Alim K. Calcium regulates cortex contraction in Physarum polycephalum. Phys Biol 2023; 21:016001. [PMID: 37975194 DOI: 10.1088/1478-3975/ad0a9a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2023] [Accepted: 11/08/2023] [Indexed: 11/19/2023]
Abstract
The tubular network-forming slime moldPhysarum polycephalumis able to maintain long-scale contraction patterns driven by an actomyosin cortex. The resulting shuttle streaming in the network is crucial for the organism to respond to external stimuli and reorganize its body mass giving rise to complex behaviors. However, the chemical basis of the self-organized flow pattern is not fully understood. Here, we present ratiometric measurements of free intracellular calcium in simple morphologies ofPhysarumnetworks. The spatiotemporal patterns of the free calcium concentration reveal a nearly anti-correlated relation to the tube radius, suggesting that calcium is indeed a key regulator of the actomyosin activity. We compare the experimentally observed phase relation between the radius and the calcium concentration to the predictions of a theoretical model including calcium as an inhibitor. Numerical simulations of the model suggest that calcium indeed inhibits the contractions inPhysarum, although a quantitative difference to the experimentally measured phase relation remains. Unraveling the mechanism underlying the contraction patterns is a key step in gaining further insight into the principles ofPhysarum's complex behavior.
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Affiliation(s)
- Bjoern Kscheschinski
- Max Planck Institute for Dynamics and Self-Organization, 37077 Göttingen, Germany
| | - Mirna Kramar
- Max Planck Institute for Dynamics and Self-Organization, 37077 Göttingen, Germany
| | - Karen Alim
- Max Planck Institute for Dynamics and Self-Organization, 37077 Göttingen, Germany
- TUM School of Natural Sciences, Department of Bioscience, Center for Protein Assemblies (CPA), Technical University of Munich, Garching, 85748, Germany
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Zhang L, Wu Y, Yu Y, Zhang Y, Wei F, Zhu QH, Zhou J, Zhao L, Zhang Y, Feng Z, Feng H, Sun J. Acetylation of GhCaM7 enhances cotton resistance to Verticillium dahliae. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2023; 114:1405-1424. [PMID: 36948889 DOI: 10.1111/tpj.16200] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/02/2022] [Revised: 03/09/2023] [Accepted: 03/14/2023] [Indexed: 06/17/2023]
Abstract
Protein lysine acetylation is an important post-translational modification mechanism involved in cellular regulation in eukaryotes. Calmodulin (CaM) is a ubiquitous Ca2+ sensor in eukaryotes and is crucial for plant immunity, but it is so far unclear whether acetylation is involved in CaM-mediated plant immunity. Here, we found that GhCaM7 is acetylated upon Verticillium dahliae (V. dahliae) infection and a positive regulator of V. dahliae resistance. Overexpressing GhCaM7 in cotton and Arabidopsis enhances V. dahliae resistance and knocking-down GhCaM7 makes cotton more susceptible to V. dahliae. Transgenic Arabidopsis plants overexpressing GhCaM7 with mutation at the acetylation site are more susceptible to V. dahliae than transgenics overexpressing the wild-type GhCaM7, implying the importance of the acetylated GhCaM7 in response to V. dahliae infection. Yeast two-hybrid, bimolecular fluorescent complementation, luciferase complementation imaging, and coimmunoprecipitation assays demonstrated interaction between GhCaM7 and an osmotin protein GhOSM34 that was shown to have a positive role in V. dahliae resistance. GhCaM7 and GhOSM34 are co-localized in the cell membrane. Upon V. dahliae infection, the Ca2+ content reduces almost instantly in plants with downregulated GhCaM7 or GhOSM34. Down regulating GhOSM34 enhances accumulation of Na+ and increases cell osmotic pressure. Comparative transcriptomic analyses between cotton plants with an increased or reduced expression level of GhCaM7 and wild-type plants indicate the involvement of jasmonic acid signaling pathways and reactive oxygen species in GhCaM7-enabled disease resistance. Together, these results demonstrate the involvement of CaM protein in the interaction between cotton and V. dahliae, and more importantly, the involvement of the acetylated CaM in the interaction.
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Affiliation(s)
- Lei Zhang
- College of Agriculture/The Key Laboratory of Oasis Eco-agriculture, Shihezi University, Shihezi, 832000, Xinjiang, China
- State Key Laboratory of Cotton Biology, Institute of Cotton Research of CAAS, Anyang, 455000, Henan, China
- School of Life Science and Technology, Henan Institute of Science and Technology, Xinxiang, 453003, China
| | - Yajie Wu
- State Key Laboratory of Cotton Biology, Institute of Cotton Research of CAAS, Anyang, 455000, Henan, China
- Western Agricultural Research Center, Chinese Academy of Agricultural Sciences, Changji, 831100, Xinjiang, China
| | - Yongang Yu
- School of Life Science and Technology, Henan Institute of Science and Technology, Xinxiang, 453003, China
| | - Yihao Zhang
- State Key Laboratory of Cotton Biology, Institute of Cotton Research of CAAS, Anyang, 455000, Henan, China
| | - Feng Wei
- State Key Laboratory of Cotton Biology, Institute of Cotton Research of CAAS, Anyang, 455000, Henan, China
| | - Qian-Hao Zhu
- CSIRO Agriculture and Food, GPO Box 1700, Canberra, 2601, Australia
| | - Jinglong Zhou
- State Key Laboratory of Cotton Biology, Institute of Cotton Research of CAAS, Anyang, 455000, Henan, China
- School of Life Science and Technology, Henan Institute of Science and Technology, Xinxiang, 453003, China
| | - Lihong Zhao
- State Key Laboratory of Cotton Biology, Institute of Cotton Research of CAAS, Anyang, 455000, Henan, China
| | - Yalin Zhang
- State Key Laboratory of Cotton Biology, Institute of Cotton Research of CAAS, Anyang, 455000, Henan, China
- School of Life Science and Technology, Henan Institute of Science and Technology, Xinxiang, 453003, China
| | - Zili Feng
- State Key Laboratory of Cotton Biology, Institute of Cotton Research of CAAS, Anyang, 455000, Henan, China
| | - Hongjie Feng
- State Key Laboratory of Cotton Biology, Institute of Cotton Research of CAAS, Anyang, 455000, Henan, China
- School of Life Science and Technology, Henan Institute of Science and Technology, Xinxiang, 453003, China
| | - Jie Sun
- College of Agriculture/The Key Laboratory of Oasis Eco-agriculture, Shihezi University, Shihezi, 832000, Xinjiang, China
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Du H, Chen J, Zhan H, Li S, Wang Y, Wang W, Hu X. The Roles of CDPKs as a Convergence Point of Different Signaling Pathways in Maize Adaptation to Abiotic Stress. Int J Mol Sci 2023; 24:ijms24032325. [PMID: 36768648 PMCID: PMC9917105 DOI: 10.3390/ijms24032325] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2022] [Revised: 01/17/2023] [Accepted: 01/20/2023] [Indexed: 01/26/2023] Open
Abstract
The calcium ion (Ca2+), as a well-known second messenger, plays an important role in multiple processes of growth, development, and stress adaptation in plants. As central Ca2+ sensor proteins and a multifunctional kinase family, calcium-dependent protein kinases (CDPKs) are widely present in plants. In maize, the signal transduction processes involved in ZmCDPKs' responses to abiotic stresses have also been well elucidated. In addition to Ca2+ signaling, maize ZmCDPKs are also regulated by a variety of abiotic stresses, and they transmit signals to downstream target molecules, such as transport proteins, transcription factors, molecular chaperones, and other protein kinases, through protein interaction or phosphorylation, etc., thus changing their activity, triggering a series of cascade reactions, and being involved in hormone and reactive oxygen signaling regulation. As such, ZmCDPKs play an indispensable role in regulating maize growth, development, and stress responses. In this review, we summarize the roles of ZmCDPKs as a convergence point of different signaling pathways in regulating maize response to abiotic stress, which will promote an understanding of the molecular mechanisms of ZmCDPKs in maize tolerance to abiotic stress and open new opportunities for agricultural applications.
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Li T, Liu Z, Lv T, Xu Y, Wei Y, Liu W, Wei Y, Liu L, Wang A. Phosphorylation of MdCYTOKININ RESPONSE FACTOR4 suppresses ethylene biosynthesis during apple fruit ripening. PLANT PHYSIOLOGY 2023; 191:694-714. [PMID: 36287070 PMCID: PMC9806567 DOI: 10.1093/plphys/kiac498] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2022] [Accepted: 09/27/2022] [Indexed: 05/12/2023]
Abstract
The plant hormone ethylene plays a central role in the ripening of climacteric fruits, such as apple (Malus domestica). Ethylene biosynthesis in apple fruit can be suppressed by calcium ions (Ca2+); however, the underlying mechanism is largely unknown. In this study, we identified an apple APETALA2/ETHYLENE-RESPONSIVE FACTOR (AP2/ERF) transcription factor, MdCYTOKININ RESPONSE FACTOR4 (MdCRF4), which functions as a transcriptional activator of ethylene biosynthesis- and signaling-related genes, including Md1-AMINOCYCLOPROPANE-1-CARBOXYLIC ACID SYNTHASE1 (MdACS1) and MdETHYLENE-RESPONSIVE FACTOR3 (MdERF3), as a partner of the calcium sensor, calmodulin. Ca2+ promoted the Ca2+/CaM2-mediated phosphorylation of MdCRF4, resulting in MdCRF4 recognition by the E3 ubiquitin ligase MdXB3 ORTHOLOG 1 IN ARABIDOPSIS THALIANA (MdXBAT31), and consequently its ubiquitination and degradation via the 26S proteasome pathway. This in turn resulted in lower expression of MdACS1 and MdERF3 and reduced ethylene biosynthesis. Transiently overexpressing various MdCRF4 proteins with specific mutated phosphorylation sites revealed that the phosphorylation state of MdCRF4 affects the ripening of apple fruit. The results reveal that a Ca2+/CaM-MdCRF4-MdXBAT31 module is involved in Ca2+-suppressed ethylene biosynthesis, which delays apple fruit ripening. This provides insights into fruit ripening that may result in strategies for extending fruit shelf life.
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Affiliation(s)
- Tong Li
- Key Laboratory of Fruit Postharvest Biology (Liaoning Province), Key Laboratory of Protected Horticulture (Ministry of Education), National & Local Joint Engineering Research Center of Northern Horticultural Facilities Design & Application Technology (Liaoning), College of Horticulture, Shenyang Agricultural University, Shenyang 110866, China
| | - Zhi Liu
- Liaoning Institute of Pomology, Xiongyue 115009, China
| | - Tianxing Lv
- Liaoning Institute of Pomology, Xiongyue 115009, China
| | - Yaxiu Xu
- Key Laboratory of Fruit Postharvest Biology (Liaoning Province), Key Laboratory of Protected Horticulture (Ministry of Education), National & Local Joint Engineering Research Center of Northern Horticultural Facilities Design & Application Technology (Liaoning), College of Horticulture, Shenyang Agricultural University, Shenyang 110866, China
| | - Yun Wei
- Key Laboratory of Fruit Postharvest Biology (Liaoning Province), Key Laboratory of Protected Horticulture (Ministry of Education), National & Local Joint Engineering Research Center of Northern Horticultural Facilities Design & Application Technology (Liaoning), College of Horticulture, Shenyang Agricultural University, Shenyang 110866, China
| | - Weiting Liu
- Key Laboratory of Fruit Postharvest Biology (Liaoning Province), Key Laboratory of Protected Horticulture (Ministry of Education), National & Local Joint Engineering Research Center of Northern Horticultural Facilities Design & Application Technology (Liaoning), College of Horticulture, Shenyang Agricultural University, Shenyang 110866, China
| | - Yajing Wei
- Key Laboratory of Fruit Postharvest Biology (Liaoning Province), Key Laboratory of Protected Horticulture (Ministry of Education), National & Local Joint Engineering Research Center of Northern Horticultural Facilities Design & Application Technology (Liaoning), College of Horticulture, Shenyang Agricultural University, Shenyang 110866, China
| | - Li Liu
- Key Laboratory of Fruit Postharvest Biology (Liaoning Province), Key Laboratory of Protected Horticulture (Ministry of Education), National & Local Joint Engineering Research Center of Northern Horticultural Facilities Design & Application Technology (Liaoning), College of Horticulture, Shenyang Agricultural University, Shenyang 110866, China
| | - Aide Wang
- Key Laboratory of Fruit Postharvest Biology (Liaoning Province), Key Laboratory of Protected Horticulture (Ministry of Education), National & Local Joint Engineering Research Center of Northern Horticultural Facilities Design & Application Technology (Liaoning), College of Horticulture, Shenyang Agricultural University, Shenyang 110866, China
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Niu J, Li Z, Zhu J, Wu R, Kong L, Niu T, Li X, Cheng X, Li J, Dai L. Genome-wide identification and characterization of the C2 domain family in Sorghum bicolor (L.) and expression profiles in response to saline-alkali stress. PHYSIOLOGY AND MOLECULAR BIOLOGY OF PLANTS : AN INTERNATIONAL JOURNAL OF FUNCTIONAL PLANT BIOLOGY 2022; 28:1695-1711. [PMID: 36387979 PMCID: PMC9636366 DOI: 10.1007/s12298-022-01222-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/12/2021] [Revised: 08/08/2022] [Accepted: 08/11/2022] [Indexed: 06/16/2023]
Abstract
The C2 domain family proteins in plants has been recently shown to be involved in the response to abiotic stress such as salt and drought stress. However, less information on C2 domain family members has been reported in Sorghum bicolor (L.), which is a tolerant cereal crop. To elaborate the mechanism of C2 domain family members in response to abiotic stress, bioinformatic methods were used to analyze this family. The results indicated that 69 C2 domain genes belonging to 5 different groups were first identified within the sorghum genome, and each group possessed various gene structures and conserved functional domains. Second, those C2 family genes were localized on 10 chromosomes 3 tandem repeat genes and 1 pair of repeat gene fragments were detected. The family members further presented a variety of stress responsive cis-elements. Third, in addition to being the major integral component of the membrane, sorghum C2 domain family proteins mainly played roles in response to abiotic and biotic stress with their organic transport and catalytic activity by specific location in the cell on the basis of gene ontology analysis. C2 family genes were differentially expressed in root, shoot or leaf, and shown different expression profiling after saline-alkali stress, which indicated that C2 family members played an important role in response to saline-alkali stress based on the transcription profiles of RNA-seq data and expression analysis by quantitative real-time polymerase chain reaction. Besides, most C2 family members were mainly located in cytoplasmi and nucleus. Weighted gene co-expression network analysis revealed three modules (turquoise, dark magenta and pink) that were associated with stress resistance, respectively. Therefore, the present research provides comprehensive information for further analysis of the molecular function of C2 domain family genes in sorghum. Supplementary Information The online version contains supplementary material available at 10.1007/s12298-022-01222-3.
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Affiliation(s)
- Jiangshuai Niu
- College of Life Science and Technology, Heilongjiang Bayi Agricultural University, No.5, Xinfeng Road, High-tech Zone, Daqing, 163319 Heilongjiang Province China
| | - Zhijiang Li
- College of Food Science, Heilongjiang Bayi Agricultural University, Daqing, 163319 Heilongjiang Province China
| | - Jiarui Zhu
- College of Life Science and Technology, Heilongjiang Bayi Agricultural University, No.5, Xinfeng Road, High-tech Zone, Daqing, 163319 Heilongjiang Province China
| | - Rong Wu
- College of Life Science and Technology, Heilongjiang Bayi Agricultural University, No.5, Xinfeng Road, High-tech Zone, Daqing, 163319 Heilongjiang Province China
| | - Lingxin Kong
- College of Life Science and Technology, Heilongjiang Bayi Agricultural University, No.5, Xinfeng Road, High-tech Zone, Daqing, 163319 Heilongjiang Province China
| | - Tingli Niu
- College of Life Science and Technology, Heilongjiang Bayi Agricultural University, No.5, Xinfeng Road, High-tech Zone, Daqing, 163319 Heilongjiang Province China
| | - Xueying Li
- College of Life Science and Technology, Heilongjiang Bayi Agricultural University, No.5, Xinfeng Road, High-tech Zone, Daqing, 163319 Heilongjiang Province China
| | - Xinran Cheng
- College of Life Science and Technology, Heilongjiang Bayi Agricultural University, No.5, Xinfeng Road, High-tech Zone, Daqing, 163319 Heilongjiang Province China
| | - Jianying Li
- Daqing Branch of Heilongjiang Academy of Agricultural Sciences, Daqing, 163319 Heilongjiang Province China
| | - Lingyan Dai
- College of Life Science and Technology, Heilongjiang Bayi Agricultural University, No.5, Xinfeng Road, High-tech Zone, Daqing, 163319 Heilongjiang Province China
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Sangchai P, Buaboocha T, Sirikantaramas S, Wutipraditkul N. Changes in physiological responses of OsCaM1-1 overexpression in the transgenic rice under dehydration stress. Biosci Biotechnol Biochem 2022; 86:1211-1219. [PMID: 35896479 DOI: 10.1093/bbb/zbac115] [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: 03/09/2022] [Accepted: 07/04/2022] [Indexed: 11/14/2022]
Abstract
Calmodulin, a primary calcium sensor in eukaryotes, binds calcium and regulates the activity of effector proteins in response to calcium signals that evoked in response to abiotic and biotic stress. To identify physiological responses associated with improved tolerance under dehydration stress that may be regulated by calmodulin in rice, the transgenic rice overexpressing OsCaM1-1, the control and the wild-type KDML105 differing in their dehydration tolerance were compared 24 h after exposure to dehydration stress. The results demonstrated a greater increase in relative water content, relative growth rate, abscisic acid, photosynthetic pigment and proline contents, and antioxidant activities in the transgenic rice plants, whereas Na/K and Na/Ca ratio, lipid peroxidation, and electrolytic leakage decreased. The OsCaM1-1 gene overexpression in the transgenic rice showed greater tolerance to dehydration stress than non-transgenic rice, suggesting that OsCaM1-1 might play an important role in mitigating dehydration stress.
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Affiliation(s)
- Pun Sangchai
- Center of Excellence for Molecular Crop, Department of Biochemistry, Faculty of Science, Chulalongkorn University, 254 Phayathai Road, Patumwan, Bangkok 10330, Thailand
| | - Teerapong Buaboocha
- Center of Excellence for Molecular Crop, Department of Biochemistry, Faculty of Science, Chulalongkorn University, 254 Phayathai Road, Patumwan, Bangkok 10330, Thailand
| | - Supaart Sirikantaramas
- Center of Excellence for Molecular Crop, Department of Biochemistry, Faculty of Science, Chulalongkorn University, 254 Phayathai Road, Patumwan, Bangkok 10330, Thailand
| | - Nuchanat Wutipraditkul
- Center of Excellence for Molecular Crop, Department of Biochemistry, Faculty of Science, Chulalongkorn University, 254 Phayathai Road, Patumwan, Bangkok 10330, Thailand
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Wang D, Wu X, Gao S, Zhang S, Wang W, Fang Z, Liu S, Wang X, Zhao C, Tang Y. Systematic Analysis and Identification of Drought-Responsive Genes of the CAMTA Gene Family in Wheat ( Triticum aestivum L.). Int J Mol Sci 2022; 23:ijms23094542. [PMID: 35562932 PMCID: PMC9102227 DOI: 10.3390/ijms23094542] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2022] [Revised: 04/13/2022] [Accepted: 04/18/2022] [Indexed: 02/04/2023] Open
Abstract
The calmodulin-binding transcription activator (CAMTA) is a Ca2+/CaM-mediated transcription factor (TF) that modulates plant stress responses and development. Although the investigations of CAMTAs in various organisms revealed a broad range of functions from sensory mechanisms to physiological activities in crops, little is known about the CAMTA family in wheat (Triticum aestivum L.). Here, we systematically analyzed phylogeny, gene expansion, conserved motifs, gene structure, cis-elements, chromosomal localization, and expression patterns of CAMTA genes in wheat. We described and confirmed, via molecular evolution and functional verification analyses, two new members of the family, TaCAMTA5-B.1 and TaCAMTA5-B.2. In addition, we determined that the expression of most TaCAMTA genes responded to several abiotic stresses (drought, salt, heat, and cold) and ABA during the seedling stage, but it was mainly induced by drought stress. Our study provides considerable information about the changes in gene expression in wheat under stress, notably that drought stress-related gene expression in TaCAMTA1b-B.1 transgenic lines was significantly upregulated under drought stress. In addition to providing a comprehensive view of CAMTA genes in wheat, our results indicate that TaCAMTA1b-B.1 has a potential role in the drought stress response induced by a water deficit at the seedling stage.
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Affiliation(s)
- Dezhou Wang
- Institute of Hybrid Wheat, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China; (D.W.); (S.G.); (S.Z.); (W.W.); (Z.F.); (S.L.)
- The Municipal Key Laboratory of the Molecular Genetics of Hybrid Wheat, Beijing 100097, China
| | - Xian Wu
- Hubei Collaborative Innovation Center for Grain Industry, Agriculture College, Yangtze University, Jingzhou 434023, China; (X.W.); (X.W.)
| | - Shiqin Gao
- Institute of Hybrid Wheat, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China; (D.W.); (S.G.); (S.Z.); (W.W.); (Z.F.); (S.L.)
- The Municipal Key Laboratory of the Molecular Genetics of Hybrid Wheat, Beijing 100097, China
| | - Shengquan Zhang
- Institute of Hybrid Wheat, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China; (D.W.); (S.G.); (S.Z.); (W.W.); (Z.F.); (S.L.)
- The Municipal Key Laboratory of the Molecular Genetics of Hybrid Wheat, Beijing 100097, China
| | - Weiwei Wang
- Institute of Hybrid Wheat, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China; (D.W.); (S.G.); (S.Z.); (W.W.); (Z.F.); (S.L.)
- The Municipal Key Laboratory of the Molecular Genetics of Hybrid Wheat, Beijing 100097, China
| | - Zhaofeng Fang
- Institute of Hybrid Wheat, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China; (D.W.); (S.G.); (S.Z.); (W.W.); (Z.F.); (S.L.)
- The Municipal Key Laboratory of the Molecular Genetics of Hybrid Wheat, Beijing 100097, China
| | - Shan Liu
- Institute of Hybrid Wheat, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China; (D.W.); (S.G.); (S.Z.); (W.W.); (Z.F.); (S.L.)
- The Municipal Key Laboratory of the Molecular Genetics of Hybrid Wheat, Beijing 100097, China
| | - Xiaoyan Wang
- Hubei Collaborative Innovation Center for Grain Industry, Agriculture College, Yangtze University, Jingzhou 434023, China; (X.W.); (X.W.)
| | - Changping Zhao
- Institute of Hybrid Wheat, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China; (D.W.); (S.G.); (S.Z.); (W.W.); (Z.F.); (S.L.)
- The Municipal Key Laboratory of the Molecular Genetics of Hybrid Wheat, Beijing 100097, China
- Correspondence: (C.Z.); (Y.T.)
| | - Yimiao Tang
- Institute of Hybrid Wheat, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China; (D.W.); (S.G.); (S.Z.); (W.W.); (Z.F.); (S.L.)
- The Municipal Key Laboratory of the Molecular Genetics of Hybrid Wheat, Beijing 100097, China
- Correspondence: (C.Z.); (Y.T.)
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Han B, Cui D, Ma X, Cao G, Zhang H, Koh HJ, Han L. Evidence for evolution and selection of drought-resistant genes based on high-throughput resequencing in weedy rice. JOURNAL OF EXPERIMENTAL BOTANY 2022; 73:1949-1962. [PMID: 35179195 DOI: 10.1093/jxb/erab515] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2021] [Accepted: 11/27/2021] [Indexed: 06/14/2023]
Abstract
Weedy rice (Oryza sativa f. spontanea) is a relative of cultivated rice that propagates in paddy fields and has strong drought resistance. In this study, we used 501 rice accessions to reveal the selection mechanism of drought resistance in weedy rice through a combination of selection analysis, genome-wide association studies, gene knockout and overexpression analysis, and Ca2+ and K+ ion flux assays. The results showed that the weedy rice species investigated have gene introgression with cultivated rice, which is consistent with the hypothesis that weedy rice originated from de-domestication of cultivated rice. Regions related to tolerance have particularly diversified during de-domestication and three drought-tolerance genes were identified. Of these, Os01g0800500 was also identified using an assay of the degree of leaf withering under drought, and it was named as PAPH1, encoding a PAP family protein. The drought-resistance capacity of PAPH1-knockout lines was much lower than that of the wild type, while that of overexpression lines was much higher. Concentrations of Ca2+ and K+ were lower in the knockout lines and higher in the overexpression lines compared with those of the wild type, suggesting that PAPH1 plays important roles in coping with drought stress. Our study therefore provides new insights into the genetic mechanisms underlying adaptive tolerance to drought in wild rice and highlights potential new resistance genes for future breeding programs in cultivated rice.
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Affiliation(s)
- Bing Han
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Di Cui
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Xiaoding Ma
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Guilan Cao
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Hui Zhang
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Hee Jong Koh
- Department of Plant Science, Plant Genomics and Breeding Institute of Agriculture and Life Science, Seoul National University, Seoul, >Korea
| | - Longzhi Han
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, China
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11
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Sohrabi SS, Ismaili A, Nazarian-Firouzabadi F, Fallahi H, Hosseini SZ. Identification of key genes and molecular mechanisms associated with temperature stress in lentil. Gene 2022; 807:145952. [PMID: 34500049 DOI: 10.1016/j.gene.2021.145952] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2021] [Revised: 08/24/2021] [Accepted: 09/03/2021] [Indexed: 02/03/2023]
Abstract
Extreme temperature is one of the serious threats to crop production in present and future scenarios of global climate changes. Lentil (Lens culinaris) is an important crop, and there is a serious lack of genetic information regarding environmental and temperature stresses responses. This study is the first report of evaluation of key genes and molecular mechanisms related to temperature stresses in lentil using the RNA sequencing technique. De novo transcriptome assembly created 44,673 contigs and differential gene expression analysis revealed 7494 differentially expressed genes between the temperature stresses and control group. Basic annotation of generated transcriptome assembly in our study led to the identification of 2765 novel transcripts that have not been identified yet in lentil genome draft v1.2. In addition, several unigenes involved in mechanisms of temperature sensing, calcium and hormone signaling and DNA-binding transcription factor activity were identified. Also, common mechanisms in response to temperature stresses, including the proline biosynthesis, the photosynthetic light reactions balancing, chaperone activity and circadian rhythms, are determined by the hub genes through the protein-protein interaction networks analysis. Deciphering the mechanisms of extreme temperature tolerance would be a new way for developing crops with enhanced plasticity against climate change. In general, this study has identified set of mechanisms and various genes related to cold and heat stresses which will be useful in better understanding of the lentil's reaction to temperature stresses.
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Affiliation(s)
- Seyed Sajad Sohrabi
- Department of Plant Production and Genetic Engineering, Faculty of Agriculture, Lorestan University, Khorramabad, Iran.
| | - Ahmad Ismaili
- Department of Plant Production and Genetic Engineering, Faculty of Agriculture, Lorestan University, Khorramabad, Iran.
| | - Farhad Nazarian-Firouzabadi
- Department of Plant Production and Genetic Engineering, Faculty of Agriculture, Lorestan University, Khorramabad, Iran.
| | - Hossein Fallahi
- Department of Biology, School of Sciences, Razi University, Kermanshah, Iran.
| | - Seyedeh Zahra Hosseini
- Department of Plant Production and Genetic Engineering, Faculty of Agriculture, Lorestan University, Khorramabad, Iran.
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12
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Iqbal Z, Iqbal MS, Sangpong L, Khaksar G, Sirikantaramas S, Buaboocha T. Comprehensive genome-wide analysis of calmodulin-binding transcription activator (CAMTA) in Durio zibethinus and identification of fruit ripening-associated DzCAMTAs. BMC Genomics 2021; 22:743. [PMID: 34649525 PMCID: PMC8518175 DOI: 10.1186/s12864-021-08022-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2021] [Accepted: 09/13/2021] [Indexed: 12/11/2022] Open
Abstract
Background Fruit ripening is an intricate developmental process driven by a highly coordinated action of complex hormonal networks. Ethylene is considered as the main phytohormone that regulates the ripening of climacteric fruits. Concomitantly, several ethylene-responsive transcription factors (TFs) are pivotal components of the regulatory network underlying fruit ripening. Calmodulin-binding transcription activator (CAMTA) is one such ethylene-induced TF implicated in various stress and plant developmental processes. Results Our comprehensive analysis of the CAMTA gene family in Durio zibethinus (durian, Dz) identified 10 CAMTAs with conserved domains. Phylogenetic analysis of DzCAMTAs, positioned DzCAMTA3 with its tomato ortholog that has already been validated for its role in the fruit ripening process through ethylene-mediated signaling. Furthermore, the transcriptome-wide analysis revealed DzCAMTA3 and DzCAMTA8 as the highest expressing durian CAMTA genes. These two DzCAMTAs possessed a distinct ripening-associated expression pattern during post-harvest ripening in Monthong, a durian cultivar native to Thailand. The expression profiling of DzCAMTA3 and DzCAMTA8 under natural ripening conditions and ethylene-induced/delayed ripening conditions substantiated their roles as ethylene-induced transcriptional activators of ripening. Similarly, auxin-suppressed expression of DzCAMTA3 and DzCAMTA8 confirmed their responsiveness to exogenous auxin treatment in a time-dependent manner. Accordingly, we propose that DzCAMTA3 and DzCAMTA8 synergistically crosstalk with ethylene during durian fruit ripening. In contrast, DzCAMTA3 and DzCAMTA8 antagonistically with auxin could affect the post-harvest ripening process in durian. Furthermore, DzCAMTA3 and DzCAMTA8 interacting genes contain significant CAMTA recognition motifs and regulated several pivotal fruit-ripening-associated pathways. Conclusion Taken together, the present study contributes to an in-depth understanding of the structure and probable function of CAMTA genes in the post-harvest ripening of durian. Supplementary Information The online version contains supplementary material available at 10.1186/s12864-021-08022-1.
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Affiliation(s)
- Zahra Iqbal
- Molecular Crop Research Unit, Department of Biochemistry, Chulalongkorn University, Bangkok, Thailand
| | - Mohammed Shariq Iqbal
- Amity Institute of Biotechnology, Amity University, Lucknow Campus, Lucknow, Uttar Pradesh, India
| | - Lalida Sangpong
- Molecular Crop Research Unit, Department of Biochemistry, Chulalongkorn University, Bangkok, Thailand
| | - Gholamreza Khaksar
- Molecular Crop Research Unit, Department of Biochemistry, Chulalongkorn University, Bangkok, Thailand
| | - Supaart Sirikantaramas
- Molecular Crop Research Unit, Department of Biochemistry, Chulalongkorn University, Bangkok, Thailand.,Omics Sciences and Bioinformatics Center, Faculty of Science, Chulalongkorn University, Bangkok, Thailand
| | - Teerapong Buaboocha
- Molecular Crop Research Unit, Department of Biochemistry, Chulalongkorn University, Bangkok, Thailand. .,Omics Sciences and Bioinformatics Center, Faculty of Science, Chulalongkorn University, Bangkok, Thailand.
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Fan T, Lv T, Xie C, Zhou Y, Tian C. Genome-Wide Analysis of the IQM Gene Family in Rice ( Oryza sativa L.). PLANTS (BASEL, SWITZERLAND) 2021; 10:plants10091949. [PMID: 34579481 PMCID: PMC8469326 DOI: 10.3390/plants10091949] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/04/2021] [Revised: 09/06/2021] [Accepted: 09/14/2021] [Indexed: 06/01/2023]
Abstract
Members of the IQM (IQ-Motif Containing) gene family are involved in plant growth and developmental processes, biotic and abiotic stress response. To systematically analyze the IQM gene family and their expression profiles under diverse biotic and abiotic stresses, we identified 8 IQM genes in the rice genome. In the current study, the whole genome identification and characterization of OsIQMs, including the gene and protein structure, genome localization, phylogenetic relationship, gene expression and yeast two-hybrid were performed. Eight IQM genes were classified into three subfamilies (I-III) according to the phylogenetic analysis. Gene structure and protein motif analyses showed that these IQM genes are relatively conserved within each subfamily of rice. The 8 OsIQM genes are distributed on seven out of the twelve chromosomes, with three IQM gene pairs involved in segmental duplication events. The evolutionary patterns analysis revealed that the IQM genes underwent a large-scale event within the last 20 to 9 million years. In addition, quantitative real-time PCR analysis of eight OsIQMs genes displayed different expression patterns at different developmental stages and in different tissues as well as showed that most IQM genes were responsive to PEG, NaCl, jasmonic acid (JA), abscisic acid (ABA) treatment, suggesting their crucial roles in biotic, and abiotic stress response. Additionally, a yeast two-hybrid assay showed that OsIQMs can interact with OsCaMs, and the IQ motif of OsIQMs is required for OsIQMs to combine with OsCaMs. Our results will be valuable to further characterize the important biological functions of rice IQM genes.
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Yin L, Zhang M, Wu R, Chen X, Liu F, Xing B. Genome-wide analysis of OSCA gene family members in Vigna radiata and their involvement in the osmotic response. BMC PLANT BIOLOGY 2021; 21:408. [PMID: 34493199 PMCID: PMC8422765 DOI: 10.1186/s12870-021-03184-2] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/19/2021] [Accepted: 08/20/2021] [Indexed: 05/25/2023]
Abstract
BACKGROUND Mung bean (Vigna radiata) is a warm-season legume crop and belongs to the papilionoid subfamily of the Fabaceae family. China is the leading producer of mung bean in the world. Mung bean has significant economic and health benefits and is a promising species with broad adaptation ability and high tolerance to environmental stresses. OSCA (hyperosmolality-gated calcium-permeable channel) gene family members play an important role in the modulation of hypertonic stress, such as drought and salinity. However, genome-wide analysis of the OSCA gene family has not been conducted in mung bean. RESULTS We identified a total of 13 OSCA genes in the mung bean genome and named them according to their homology with AtOSCAs. All the OSCAs were phylogenetically split into four clades. Phylogenetic relationship and synteny analyses showed that the VrOSCAs in mung bean and soybean shared a relatively conserved evolutionary history. In addition, three duplicated VrOSCA gene pairs were identified, and the duplicated VrOSCAs gene pairs mainly underwent purifying selection pressure during evolution. Protein domain, motif and transmembrane analyses indicated that most of the VrOSCAs shared similar structures with their homologs. The expression pattern showed that except for VrOSCA2.1, the other 12 VrOSCAs were upregulated under treatment with ABA, PEG and NaCl, among which VrOSCA1.4 showed the largest increased expression levels. The duplicated genes VrOSCA2.1/VrOSCA2.2 showed divergent expression, which might have resulted in functionalization during subsequent evolution. The expression profiles under ABA, PEG and NaCl stress revealed a functional divergence of VrOSCA genes, which agreed with the analysis of cis-acting regulatory elements in the promoter regions of VrOSCA genes. CONCLUSIONS Collectively, the study provided a systematic analysis of the VrOSCA gene family in mung bean. Our results establish an important foundation for functional and evolutionary analysis of VrOSCAs and identify genes for further investigation of their ability to confer abiotic stress tolerance in mung bean.
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Affiliation(s)
- Lili Yin
- College of Life Science, Shanxi Datong University, Datong, 037009, People's Republic of China
| | - Meiling Zhang
- Beijing Academy of Forestry and Pomology Sciences, Beijing, 100093, People's Republic of China
| | - Ruigang Wu
- School of Landscape and Ecological Engineering, Hebei University of Engineering, Handan, 056038, People's Republic of China
| | - Xiaoliang Chen
- School of Medicine, Shanxi Datong University, Datong, 037009, People's Republic of China
| | - Fei Liu
- High Latitude Crops Institute, Shanxi Agricultural University, Datong, 037008, People's Republic of China
| | - Baolong Xing
- High Latitude Crops Institute, Shanxi Agricultural University, Datong, 037008, People's Republic of China.
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Deciphering the Role of Ion Channels in Early Defense Signaling against Herbivorous Insects. Cells 2021; 10:cells10092219. [PMID: 34571868 PMCID: PMC8470099 DOI: 10.3390/cells10092219] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2021] [Revised: 08/16/2021] [Accepted: 08/20/2021] [Indexed: 12/14/2022] Open
Abstract
Plants and insect herbivores are in a relentless battle to outwit each other. Plants have evolved various strategies to detect herbivores and mount an effective defense system against them. These defenses include physical and structural barriers such as spines, trichomes, cuticle, or chemical compounds, including secondary metabolites such as phenolics and terpenes. Plants perceive herbivory by both mechanical and chemical means. Mechanical sensing can occur through the perception of insect biting, piercing, or chewing, while chemical signaling occurs through the perception of various herbivore-derived compounds such as oral secretions (OS) or regurgitant, insect excreta (frass), or oviposition fluids. Interestingly, ion channels or transporters are the first responders for the perception of these mechanical and chemical cues. These transmembrane pore proteins can play an important role in plant defense through the induction of early signaling components such as plasma transmembrane potential (Vm) fluctuation, intracellular calcium (Ca2+), and reactive oxygen species (ROS) generation, followed by defense gene expression, and, ultimately, plant defense responses. In recent years, studies on early plant defense signaling in response to herbivory have been gaining momentum with the application of genetically encoded GFP-based sensors for real-time monitoring of early signaling events and genetic tools to manipulate ion channels involved in plant-herbivore interactions. In this review, we provide an update on recent developments and advances on early signaling events in plant-herbivore interactions, with an emphasis on the role of ion channels in early plant defense signaling.
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16
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Shi S, An L, Mao J, Aluko OO, Ullah Z, Xu F, Liu G, Liu H, Wang Q. The CBL-Interacting Protein Kinase NtCIPK23 Positively Regulates Seed Germination and Early Seedling Development in Tobacco ( Nicotiana tabacum L.). PLANTS 2021; 10:plants10020323. [PMID: 33567573 PMCID: PMC7915007 DOI: 10.3390/plants10020323] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/15/2021] [Revised: 01/31/2021] [Accepted: 02/03/2021] [Indexed: 12/31/2022]
Abstract
CBL-interacting protein kinase (CIPK) family is a unique group of serine/threonine protein kinase family identified in plants. Among this family, AtCIPK23 and its homologs in some plants are taken as a notable group for their importance in ions transport and stress responses. However, there are limited reports on their roles in seedling growth and development, especially in Solanaceae plants. In this study, NtCIPK23, a homolog of AtCIPK23 was cloned from Nicotiana tabacum. Expression analysis showed that NtCIPK23 is mainly expressed in the radicle, hypocotyl, and cotyledons of young tobacco seedlings. The transcriptional level of NtCIPK23 changes rapidly and spatiotemporally during seed germination and early seedling growth. To study the biological function of NtCIPK23 at these stages, the overexpressing and CRISPR/Cas9-mediated knock-out (ntcipk23) tobacco lines were generated. Phenotype analysis indicated that knock-out of NtCIPK23 significantly delays seed germination and the appearance of green cotyledon of young tobacco seedling. Overexpression of NtCIPK23 promotes cotyledon expansion and hypocotyl elongation of young tobacco seedlings. The expression of NtCIPK23 in hypocotyl is strongly upregulated by darkness and inhibited under light, suggesting that a regulatory mechanism of light might underlie. Consistently, a more obvious difference in hypocotyl length among different tobacco materials was observed in the dark, compared to that under the light, indicating that the upregulation of NtCIPK23 contributes greatly to the hypocotyl elongation. Taken together, NtCIPK23 not only enhances tobacco seed germination, but also accelerate early seedling growth by promoting cotyledon greening rate, cotyledon expansion and hypocotyl elongation of young tobacco seedlings.
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Affiliation(s)
- Sujuan Shi
- Tobacco Research Institute, Chinese Academy of Agricultural Sciences, Qingdao 266101, China; (S.S.); (L.A.); (J.M.); (O.O.A.); (Z.U.); (F.X.); (G.L.)
- Graduate School of Chinese Academy of Agricultural Sciences (CAAS), Beijing 100081, China
- Technology Center, Shanghai Tobacco Co., Ltd., Beijing 101121, China
| | - Lulu An
- Tobacco Research Institute, Chinese Academy of Agricultural Sciences, Qingdao 266101, China; (S.S.); (L.A.); (J.M.); (O.O.A.); (Z.U.); (F.X.); (G.L.)
- Graduate School of Chinese Academy of Agricultural Sciences (CAAS), Beijing 100081, China
| | - Jingjing Mao
- Tobacco Research Institute, Chinese Academy of Agricultural Sciences, Qingdao 266101, China; (S.S.); (L.A.); (J.M.); (O.O.A.); (Z.U.); (F.X.); (G.L.)
- Graduate School of Chinese Academy of Agricultural Sciences (CAAS), Beijing 100081, China
| | - Oluwaseun Olayemi Aluko
- Tobacco Research Institute, Chinese Academy of Agricultural Sciences, Qingdao 266101, China; (S.S.); (L.A.); (J.M.); (O.O.A.); (Z.U.); (F.X.); (G.L.)
- Graduate School of Chinese Academy of Agricultural Sciences (CAAS), Beijing 100081, China
| | - Zia Ullah
- Tobacco Research Institute, Chinese Academy of Agricultural Sciences, Qingdao 266101, China; (S.S.); (L.A.); (J.M.); (O.O.A.); (Z.U.); (F.X.); (G.L.)
- Graduate School of Chinese Academy of Agricultural Sciences (CAAS), Beijing 100081, China
| | - Fangzheng Xu
- Tobacco Research Institute, Chinese Academy of Agricultural Sciences, Qingdao 266101, China; (S.S.); (L.A.); (J.M.); (O.O.A.); (Z.U.); (F.X.); (G.L.)
- Graduate School of Chinese Academy of Agricultural Sciences (CAAS), Beijing 100081, China
| | - Guanshan Liu
- Tobacco Research Institute, Chinese Academy of Agricultural Sciences, Qingdao 266101, China; (S.S.); (L.A.); (J.M.); (O.O.A.); (Z.U.); (F.X.); (G.L.)
| | - Haobao Liu
- Tobacco Research Institute, Chinese Academy of Agricultural Sciences, Qingdao 266101, China; (S.S.); (L.A.); (J.M.); (O.O.A.); (Z.U.); (F.X.); (G.L.)
- Correspondence: (H.L.); (Q.W.); Tel.: +86-0532-8870-1031 (H.L. & Q.W.)
| | - Qian Wang
- Tobacco Research Institute, Chinese Academy of Agricultural Sciences, Qingdao 266101, China; (S.S.); (L.A.); (J.M.); (O.O.A.); (Z.U.); (F.X.); (G.L.)
- Correspondence: (H.L.); (Q.W.); Tel.: +86-0532-8870-1031 (H.L. & Q.W.)
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Xiong T, Tan Q, Li S, Mazars C, Galaud JP, Zhu X. Interactions between calcium and ABA signaling pathways in the regulation of fruit ripening. JOURNAL OF PLANT PHYSIOLOGY 2021; 256:153309. [PMID: 33197829 DOI: 10.1016/j.jplph.2020.153309] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/15/2020] [Revised: 10/21/2020] [Accepted: 10/23/2020] [Indexed: 05/18/2023]
Abstract
Fruit ripening and senescence are finely controlled by plant hormones such as ethylene and abscisic acid (ABA) but also by calcium ions and by calcium-dependent signaling pathways. Although there are extensive data supporting an interaction between ethylene and calcium in fruit ripening, the regulatory mechanisms resulting from the interaction between ABA and calcium have not yet been fully clarified. In this article, we have reviewed the full roles of calcium and its sensors (CaM, CMLs, CDPKs, CBLs) as well as ABA and the interactions between the two signaling pathways in the regulation of stress responses and in fruit ripening. To illustrate the possible interaction between calcium sensors and ABA signaling components in the control of fruit ripening, we propose an interaction model between the calcium and ABA signaling pathways.
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Affiliation(s)
- Tiantian Xiong
- Key Laboratory of Ecology and Environmental Science in Guangdong Higher Education, School of Life Science, South China Normal University, Guangzhou 510631, China
| | - Qinqin Tan
- Guangdong Provincial Key Laboratory of Postharvest Science of Fruits and Vegetables/Engineering Research Center for Postharvest Technology of Horticultural Crops in South China, Ministry of Education, College of Horticulture, South China Agricultural University, Guangzhou 510642, China
| | - Shaoshan Li
- Key Laboratory of Ecology and Environmental Science in Guangdong Higher Education, School of Life Science, South China Normal University, Guangzhou 510631, China
| | - Chiristian Mazars
- Laboratoire de Recherche en Sciences Végétales, Université de Toulouse, CNRS, UPS, 24, chemin de Borde-Rouge, Auzeville, 31320, Castanet-Tolosan, France
| | - Jean-Philippe Galaud
- Laboratoire de Recherche en Sciences Végétales, Université de Toulouse, CNRS, UPS, 24, chemin de Borde-Rouge, Auzeville, 31320, Castanet-Tolosan, France.
| | - Xiaoyang Zhu
- Guangdong Provincial Key Laboratory of Postharvest Science of Fruits and Vegetables/Engineering Research Center for Postharvest Technology of Horticultural Crops in South China, Ministry of Education, College of Horticulture, South China Agricultural University, Guangzhou 510642, China.
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Wang B, Bi Y. The role of signal production and transduction in induced resistance of harvested fruits and vegetables. FOOD QUALITY AND SAFETY 2021; 5. [DOI: 10.1093/fqsafe/fyab011] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
Abstract
Abstract
Postharvest diseases are the primary reason causing postharvest loss of fruits and vegetables. Although fungicides show an effective way to control postharvest diseases, the use of fungicides is gradually being restricted due to safety, environmental pollution, and resistance development in the pathogen. Induced resistance is a new strategy to control postharvest diseases by eliciting immune activity in fruits and vegetables with exogenous physical, chemical, and biological elicitors. After being stimulated by elicitors, fruits and vegetables respond immediately against pathogens. This process is actually a continuous signal transduction, including the generation, transduction, and interaction of signal molecules. Each step of response can lead to corresponding physiological functions, and ultimately induce disease resistance by upregulating the expression of disease resistance genes and activating a variety of metabolic pathways. Signal molecules not only mediate defense response alone, but also interact with other signal transduction pathways to regulate the disease resistance response. Among various signal molecules, the second messenger (reactive oxygen species, nitric oxide, calcium ions) and plant hormones (salicylic acid, jasmonic acid, ethylene, and abscisic acid) play an important role in induced resistance. This article summarizes and reviews the research progress of induced resistance in recent years, and expounds the role of the above-mentioned signal molecules in induced resistance of harvested fruits and vegetables, and prospects for future research.
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Iqbal Z, Shariq Iqbal M, Singh SP, Buaboocha T. Ca 2+/Calmodulin Complex Triggers CAMTA Transcriptional Machinery Under Stress in Plants: Signaling Cascade and Molecular Regulation. FRONTIERS IN PLANT SCIENCE 2020; 11:598327. [PMID: 33343600 PMCID: PMC7744605 DOI: 10.3389/fpls.2020.598327] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/2020] [Accepted: 10/30/2020] [Indexed: 05/21/2023]
Abstract
Calcium (Ca2+) ion is a critical ubiquitous intracellular second messenger, acting as a lead currency for several distinct signal transduction pathways. Transient perturbations in free cytosolic Ca2+ ([Ca2+]cyt) concentrations are indispensable for the translation of signals into adaptive biological responses. The transient increase in [Ca2+]cyt levels is sensed by an array of Ca2+ sensor relay proteins such as calmodulin (CaM), eventually leading to conformational changes and activation of CaM. CaM, in a Ca2+-dependent manner, regulates several transcription factors (TFs) that are implicated in various molecular, physiological, and biochemical functions in cells. CAMTA (calmodulin-binding transcription activator) is one such member of the Ca2+-loaded CaM-dependent family of TFs. The present review focuses on Ca2+ as a second messenger, its interaction with CaM, and Ca2+/CaM-mediated CAMTA transcriptional regulation in plants. The review recapitulates the molecular and physiological functions of CAMTA in model plants and various crops, confirming its probable involvement in stress signaling pathways and overall plant development. Studying Ca2+/CaM-mediated CAMTA TF will help in answering key questions concerning signaling cascades and molecular regulation under stress conditions and plant growth, thus improving our knowledge for crop improvement.
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Affiliation(s)
- Zahra Iqbal
- Molecular Crop Research Unit, Department of Biochemistry, Chulalongkorn University, Bangkok, Thailand
| | - Mohammed Shariq Iqbal
- Amity Institute of Biotechnology, Amity University, Uttar Pradesh, Lucknow Campus, Lucknow, India
| | - Surendra Pratap Singh
- Plant Molecular Biology Laboratory, Department of Botany, Dayanand Anglo-Vedic (PG) College, Chhatrapati Shahu Ji Maharaj University, Kanpur, India
| | - Teerapong Buaboocha
- Molecular Crop Research Unit, Department of Biochemistry, Chulalongkorn University, Bangkok, Thailand
- Omics Sciences and Bioinformatics Center, Faculty of Science, Chulalongkorn University, Bangkok, Thailand
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Zhuang L, Xu K, Zhu Y, Wang F, Xiao J, Guo L. Calcium affects glucoraphanin metabolism in broccoli sprouts under ZnSO 4 stress. Food Chem 2020; 334:127520. [PMID: 32693332 DOI: 10.1016/j.foodchem.2020.127520] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2019] [Revised: 06/23/2020] [Accepted: 07/05/2020] [Indexed: 10/23/2022]
Abstract
CaCl2, Ca2+ chelator (EGTA) and Ca2+ channel blocker (verapamil) were used to investigate mechanism of glucoraphanin metabolism in broccoli sprouts under ZnSO4 stress. CaCl2 treatment promoted sprout growth, reduced MDA (malonaldehyde) content and electrolyte leakage in sprouts under ZnSO4 stress. The highest MDA content and electrolyte leakage were obtained in ZnSO4 plus verapamil-treated sprouts. In addition, ZnSO4 plus CaCl2 treatment significantly enhanced glucoraphanin content and sulforaphane formation, while an opposite result was observed after ZnSO4 plus EGTA treatment; which were further supported by expression of glucoraphanin biosynthetic and hydrolytic genes as well as myrosinase (MYR) and epithiospecifier protein (ESP) activities. These results indicated that exogenous and endogenous calcium promoted glucoraphanin biosynthesis and the conversion rate of glucoraphanin into sulforaphane. Verapamil treatment also stimulated glucoraphanin biosynthesis, but exerted an adverse influence on sulforaphane formation from the hydrolysis of glucoraphanin because of much higher ESP expression and ESP activity than ZnSO4 treatment.
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Affiliation(s)
- Li Zhuang
- College of Food Science and Engineering, Qingdao Agricultural University, Qingdao 266109, Shandong, People's Republic of China; Qingdao Special Food Research Institute, Qingdao 266109, Shandong, People's Republic of China
| | - Kexin Xu
- College of Food Science and Engineering, Qingdao Agricultural University, Qingdao 266109, Shandong, People's Republic of China
| | - Yinglian Zhu
- College of Food Science and Engineering, Qingdao Agricultural University, Qingdao 266109, Shandong, People's Republic of China; Qingdao Special Food Research Institute, Qingdao 266109, Shandong, People's Republic of China
| | - Fengwu Wang
- College of Food Science and Engineering, Qingdao Agricultural University, Qingdao 266109, Shandong, People's Republic of China; Qingdao Special Food Research Institute, Qingdao 266109, Shandong, People's Republic of China
| | - Junxia Xiao
- College of Food Science and Engineering, Qingdao Agricultural University, Qingdao 266109, Shandong, People's Republic of China; Qingdao Special Food Research Institute, Qingdao 266109, Shandong, People's Republic of China.
| | - Liping Guo
- College of Food Science and Engineering, Qingdao Agricultural University, Qingdao 266109, Shandong, People's Republic of China; Qingdao Special Food Research Institute, Qingdao 266109, Shandong, People's Republic of China.
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21
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Sun X, Zhu J, Li X, Li Z, Han L, Luo H. AsHSP26.8a, a creeping bentgrass small heat shock protein integrates different signaling pathways to modulate plant abiotic stress response. BMC PLANT BIOLOGY 2020; 20:184. [PMID: 32345221 PMCID: PMC7189581 DOI: 10.1186/s12870-020-02369-5] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2019] [Accepted: 03/29/2020] [Indexed: 05/24/2023]
Abstract
BACKGROUND Small heat shock proteins (sHSPs) are critical for plant response to biotic and abiotic stresses, especially heat stress. They have also been implicated in various aspects of plant development. However, the acting mechanisms of the sHSPs in plants, especially in perennial grass species, remain largely elusive. RESULTS In this study, AsHSP26.8a, a novel chloroplast-localized sHSP gene from creeping bentgrass (Agrostis stolonifera L.) was cloned and its role in plant response to environmental stress was studied. AsHSP26.8a encodes a protein of 26.8 kDa. Its expression was strongly induced in both leaf and root tissues by heat stress. Transgenic Arabidopsis plants overexpressing AsHSP26.8a displayed reduced tolerance to heat stress. Furthermore, overexpression of AsHSP26.8a resulted in hypersensitivity to hormone ABA and salinity stress. Global gene expression analysis revealed AsHSP26.8a-modulated expression of heat-shock transcription factor gene, and the involvement of AsHSP26.8a in ABA-dependent and -independent as well as other stress signaling pathways. CONCLUSIONS Our results suggest that AsHSP26.8a may negatively regulate plant response to various abiotic stresses through modulating ABA and other stress signaling pathways.
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Affiliation(s)
- Xinbo Sun
- Key Laboratory of Crop Growth Regulation of Hebei Province, College of Agronomy, Hebei Agricultural University, Baoding, Hebei, 071001, People's Republic of China
- Department of Genetics and Biochemistry, Clemson University, 110 Biosystems Research Complex, Clemson, SC, 29634, USA
| | - Junfei Zhu
- Key Laboratory of Crop Growth Regulation of Hebei Province, College of Agronomy, Hebei Agricultural University, Baoding, Hebei, 071001, People's Republic of China
| | - Xin Li
- Key Laboratory of Crop Growth Regulation of Hebei Province, College of Agronomy, Hebei Agricultural University, Baoding, Hebei, 071001, People's Republic of China
| | - Zhigang Li
- Department of Genetics and Biochemistry, Clemson University, 110 Biosystems Research Complex, Clemson, SC, 29634, USA
| | - Liebao Han
- Turfgrass Research Institute, Beijing Forestry University, Beijing, 100083, People's Republic of China.
| | - Hong Luo
- Department of Genetics and Biochemistry, Clemson University, 110 Biosystems Research Complex, Clemson, SC, 29634, USA.
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22
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Wu R, Zheng W, Tan J, Sammer R, Du L, Lu C. Protein partners of plant ubiquitin-specific proteases (UBPs). PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2019; 145:227-236. [PMID: 31630936 DOI: 10.1016/j.plaphy.2019.08.032] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/26/2019] [Revised: 07/16/2019] [Accepted: 08/31/2019] [Indexed: 06/10/2023]
Abstract
As one type of deubiquitinases (DUBs), ubiquitin-specific proteases (UBPs) play an extensive and significant role in plant life involving the regulation of plant development and stress responses. However, comprehensive studies are still needed to determine the functional mechanisms, which are largely unclear. Here, we summarized recent progress of plant UBPs' functional partners, particularly the molecular mechanisms by which UBPs work with their partners. We believe that functional analyses of UBPs and their partners will provide new insights into protein deubiquitination and lead to a better understanding of the physiological roles of UBPs in plants.
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Affiliation(s)
- Ruihua Wu
- College of Biological Sciences and Technology, Beijing Forestry University, Beijing, 100083, China
| | - Wenqing Zheng
- College of Biological Sciences and Technology, Beijing Forestry University, Beijing, 100083, China
| | - Jinyi Tan
- College of Biological Sciences and Technology, Beijing Forestry University, Beijing, 100083, China
| | - Rana Sammer
- College of Biological Sciences and Technology, Beijing Forestry University, Beijing, 100083, China
| | - Liang Du
- Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, Beijing Forestry University, Beijing, 100083, China; College of Biological Sciences and Technology, Beijing Forestry University, Beijing, 100083, China.
| | - Cunfu Lu
- College of Biological Sciences and Technology, Beijing Forestry University, Beijing, 100083, China.
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Awwad F, Bertrand G, Grandbois M, Beaudoin N. Auxin protects Arabidopsis thaliana cell suspension cultures from programmed cell death induced by the cellulose biosynthesis inhibitors thaxtomin A and isoxaben. BMC PLANT BIOLOGY 2019; 19:512. [PMID: 31752698 PMCID: PMC6873746 DOI: 10.1186/s12870-019-2130-2] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/17/2019] [Accepted: 11/11/2019] [Indexed: 05/22/2023]
Abstract
BACKGROUND Thaxtomin A (TA) is a natural cellulose biosynthesis inhibitor (CBI) synthesized by the potato common scab-causing pathogen Streptomyces scabies. Inhibition of cellulose synthesis by TA compromises cell wall organization and integrity, leading to the induction of an atypical program of cell death (PCD). These processes may facilitate S. scabies entry into plant tissues. To study the mechanisms that regulate the induction of cell death in response to inhibition of cellulose synthesis, we used Arabidopsis thaliana cell suspension cultures treated with two structurally different CBIs, TA and the herbicide isoxaben (IXB). RESULTS The induction of cell death by TA and IXB was abrogated following pretreatment with the synthetic auxin 2,4-dichlorophenoxyacetic acid (2,4-D) and the natural auxin indole-3-acetic acid (IAA). The addition of auxin efflux inhibitors also inhibited the CBI-mediated induction of PCD. This effect may be due to intracellular accumulation of auxin. Auxin has a wide range of effects in plant cells, including a role in the control of cell wall composition and rigidity to facilitate cell elongation. Using Atomic Force Microscopy (AFM)-based force spectroscopy, we found that inhibition of cellulose synthesis by TA and IXB in suspension-cultured cells decreased cell wall stiffness to a level slightly different than that caused by auxin. However, the cell wall stiffness in cells pretreated with auxin prior to CBI treatment was equivalent to that of cells treated with auxin only. CONCLUSIONS Addition of auxin to Arabidopsis cell suspension cultures prevented the TA- and IXB-mediated induction of cell death. Cell survival was also stimulated by inhibition of polar auxin transport during CBI-treatment. Inhibition of cellulose synthesis perturbed cell wall mechanical properties of Arabidopsis cells. Auxin treatment alone or with CBI also decreased cell wall stiffness, showing that the mechanical properties of the cell wall perturbed by CBIs were not restored by auxin. However, since auxin's effects on the cell wall stiffness apparently overrode those induced by CBIs, we suggest that auxin may limit the impact of CBIs by restoring its own transport and/or by stabilizing the plasma membrane - cell wall - cytoskeleton continuum.
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Affiliation(s)
- Fatima Awwad
- Centre SÈVE, Département de biologie, Université de Sherbrooke, Sherbrooke, Québec, J1K 2R1, Canada
- Present address: Groupe de Recherche en Biologie végétale, Département de chimie, biochimie et physique, Université du Québec à Trois-Rivières, Trois-Rivières, Québec, G9A 5H7, Canada
| | - Guillaume Bertrand
- Institut de Pharmacologie de Sherbrooke, Département de pharmacologie et physiologie, Université de Sherbrooke, Sherbrooke, Québec, J1H 5N4, Canada
| | - Michel Grandbois
- Institut de Pharmacologie de Sherbrooke, Département de pharmacologie et physiologie, Université de Sherbrooke, Sherbrooke, Québec, J1H 5N4, Canada
| | - Nathalie Beaudoin
- Centre SÈVE, Département de biologie, Université de Sherbrooke, Sherbrooke, Québec, J1K 2R1, Canada.
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Gao W, Yu C, Ai L, Zhou Y, Duan L. Gene Expression Profiles Deciphering the Pathways of Coronatine Alleviating Water Stress in Rice ( Oryza sativa L.) Cultivar Nipponbare (Japonica). Int J Mol Sci 2019; 20:ijms20102543. [PMID: 31126161 PMCID: PMC6567010 DOI: 10.3390/ijms20102543] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2019] [Revised: 04/18/2019] [Accepted: 04/24/2019] [Indexed: 11/16/2022] Open
Abstract
Coronatine (COR) is a structural and functional analog of methyl jasmonic acid (MeJA), which can alleviate stress on plant. We studied the effects of COR on the drought stress of rice (Oryza sativa L.). Pre-treatment with COR significantly increased the biomass, relative water and proline content, and DPPH (1,1-diphenyl-2-picrylhydrazyl)-radical scavenging activity, decreased the electrolyte leakage and MDA (Malondialdehyde) content in order to maintain the stability of cell membrane. Meanwhile, we determined how COR alleviates water stress by Nipponbare gene expression profiles and cDNA microarray analyses. Seedlings were treated with 0.1 μmol L−1 COR at the three leafed stage for 12 h, followed with 17.5% polyethylene glycol (PEG). Whole genome transcript analysis was determined by employing the Rice Gene Chip (Affymetrix), a total of 870 probe sets were identified to be up or downregulated due to COR treatment under drought stress. Meanwhile, the real-time quantitative PCR (RT-qPCR) method was used to verify some genes; it indicated that there was a good agreement between the microarray data and RT-qPCR results. Our data showed that the differentially expressed genes were involved in stress response, signal transduction, metabolism and tissue structure development. Some important genes response to stress were induced by COR, which may enhance the expression of functional genes implicated in many kinds of metabolism, and play a role in defense response of rice seedling to drought stress. This study will aid in the analysis of the expressed gene induced by COR.
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Affiliation(s)
- Wei Gao
- Engineering Center for Plant Growth Regulators MOE, College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China.
| | - Chunxin Yu
- Engineering Center for Plant Growth Regulators MOE, College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China.
| | - Lin Ai
- Engineering Center for Plant Growth Regulators MOE, College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China.
| | - Yuyi Zhou
- Engineering Center for Plant Growth Regulators MOE, College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China.
| | - Liusheng Duan
- Engineering Center for Plant Growth Regulators MOE, College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China.
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Markulin L, Drouet S, Corbin C, Decourtil C, Garros L, Renouard S, Lopez T, Mongelard G, Gutierrez L, Auguin D, Lainé E, Hano C. The control exerted by ABA on lignan biosynthesis in flax (Linum usitatissimum L.) is modulated by a Ca 2+ signal transduction involving the calmodulin-like LuCML15b. JOURNAL OF PLANT PHYSIOLOGY 2019; 236:74-87. [PMID: 30928768 DOI: 10.1016/j.jplph.2019.03.005] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/03/2018] [Revised: 03/07/2019] [Accepted: 03/09/2019] [Indexed: 05/23/2023]
Abstract
The LuPLR1 gene encodes a pinoresinol lariciresinol reductase responsible for the biosynthesis of (+)-secoisolariciresinol, a cancer chemopreventive lignan, highly accumulated in the seedcoat of flax (Linum usitatissimum L.). Abscisic acid (ABA) plays a key role in the regulation of LuPLR1 gene expression and lignan accumulation in both seeds and cell suspensions, which require two cis-acting elements (ABRE and MYB2) for this regulation. Ca2+ is a universal secondary messenger involved in a wide range of physiological processes including ABA signaling. Therefore, Ca2+ may be involved as a mediator of LuPLR1 gene expression and lignan biosynthesis regulation exerted by ABA. To test the potential implication of Ca2+ signaling, a pharmacological approach was conducted using both flax cell suspensions and maturing seed systems coupled with a ß-glucuronidase reporter gene experiment, RT-qPCR analysis, lignan quantification as well as Ca2+ fluorescence imaging. Exogenous ABA application results in an increase in the intracellular Ca2+ cytosolic concentration, originating mainly from the extracellular medium. Promoter-reporter deletion experiments suggest that the ABRE and MYB2 cis-acting elements of the LuPLR1 gene promoter functioned as Ca2+-sensitive sequences involved in the ABA-mediated regulation. The use of specific inhibitors pointed the crucial roles of the Ca2+ sensors calmodulin-like proteins and Ca2+-dependent protein kinases in this regulation. This regulation appeared conserved in the two different studied systems, i.e. cell suspensions and maturing seeds. A calmodulin-like, LuCML15b, identified from gene network analysis is proposed as a key player involved in this signal transduction since RNAi experiments provided direct evidences of this role. Taken together, these results provide new information on the regulation of plant defense and human health-promoting compounds, which could be used to optimize their production.
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Affiliation(s)
- Lucija Markulin
- Laboratoire de Biologie des Ligneux et des Grandes Cultures (LBLGC), INRA, USC1328, Université d'Orléans, Pôle Universitaire d'Eure et Loir, 21 rue de Loigny la Bataille, F-28000 Chartres, France; Bioactifs et Cosmétiques, GDR 3711 COSMACTIFS, CNRS Université d'Orléans, rue de Chartres, F-45100 Orléans, France
| | - Samantha Drouet
- Laboratoire de Biologie des Ligneux et des Grandes Cultures (LBLGC), INRA, USC1328, Université d'Orléans, Pôle Universitaire d'Eure et Loir, 21 rue de Loigny la Bataille, F-28000 Chartres, France; Bioactifs et Cosmétiques, GDR 3711 COSMACTIFS, CNRS Université d'Orléans, rue de Chartres, F-45100 Orléans, France
| | - Cyrielle Corbin
- Laboratoire de Biologie des Ligneux et des Grandes Cultures (LBLGC), INRA, USC1328, Université d'Orléans, Pôle Universitaire d'Eure et Loir, 21 rue de Loigny la Bataille, F-28000 Chartres, France; Bioactifs et Cosmétiques, GDR 3711 COSMACTIFS, CNRS Université d'Orléans, rue de Chartres, F-45100 Orléans, France
| | - Cédric Decourtil
- Laboratoire de Biologie des Ligneux et des Grandes Cultures (LBLGC), INRA, USC1328, Université d'Orléans, Pôle Universitaire d'Eure et Loir, 21 rue de Loigny la Bataille, F-28000 Chartres, France; Bioactifs et Cosmétiques, GDR 3711 COSMACTIFS, CNRS Université d'Orléans, rue de Chartres, F-45100 Orléans, France
| | - Laurine Garros
- Laboratoire de Biologie des Ligneux et des Grandes Cultures (LBLGC), INRA, USC1328, Université d'Orléans, Pôle Universitaire d'Eure et Loir, 21 rue de Loigny la Bataille, F-28000 Chartres, France; Bioactifs et Cosmétiques, GDR 3711 COSMACTIFS, CNRS Université d'Orléans, rue de Chartres, F-45100 Orléans, France
| | - Sullivan Renouard
- Laboratoire de Biologie des Ligneux et des Grandes Cultures (LBLGC), INRA, USC1328, Université d'Orléans, Pôle Universitaire d'Eure et Loir, 21 rue de Loigny la Bataille, F-28000 Chartres, France; Bioactifs et Cosmétiques, GDR 3711 COSMACTIFS, CNRS Université d'Orléans, rue de Chartres, F-45100 Orléans, France
| | - Tatiana Lopez
- Laboratoire de Biologie des Ligneux et des Grandes Cultures (LBLGC), INRA, USC1328, Université d'Orléans, Pôle Universitaire d'Eure et Loir, 21 rue de Loigny la Bataille, F-28000 Chartres, France; Bioactifs et Cosmétiques, GDR 3711 COSMACTIFS, CNRS Université d'Orléans, rue de Chartres, F-45100 Orléans, France
| | - Gaëlle Mongelard
- Centre de Ressources Régionales en Biologie Moléculaire (CRRBM), Université Picardie Jules Verne, 33 rue Saint-Leu, F-80039 Amiens, France
| | - Laurent Gutierrez
- Centre de Ressources Régionales en Biologie Moléculaire (CRRBM), Université Picardie Jules Verne, 33 rue Saint-Leu, F-80039 Amiens, France
| | - Daniel Auguin
- Laboratoire de Biologie des Ligneux et des Grandes Cultures (LBLGC), INRA, USC1328, Université d'Orléans, Pôle Universitaire d'Eure et Loir, 21 rue de Loigny la Bataille, F-28000 Chartres, France; Bioactifs et Cosmétiques, GDR 3711 COSMACTIFS, CNRS Université d'Orléans, rue de Chartres, F-45100 Orléans, France
| | - Eric Lainé
- Laboratoire de Biologie des Ligneux et des Grandes Cultures (LBLGC), INRA, USC1328, Université d'Orléans, Pôle Universitaire d'Eure et Loir, 21 rue de Loigny la Bataille, F-28000 Chartres, France; Bioactifs et Cosmétiques, GDR 3711 COSMACTIFS, CNRS Université d'Orléans, rue de Chartres, F-45100 Orléans, France
| | - Christophe Hano
- Laboratoire de Biologie des Ligneux et des Grandes Cultures (LBLGC), INRA, USC1328, Université d'Orléans, Pôle Universitaire d'Eure et Loir, 21 rue de Loigny la Bataille, F-28000 Chartres, France; Bioactifs et Cosmétiques, GDR 3711 COSMACTIFS, CNRS Université d'Orléans, rue de Chartres, F-45100 Orléans, France.
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Ding S, Feng X, Du H, Wang H. Genome-wide analysis of maize OSCA family members and their involvement in drought stress. PeerJ 2019; 7:e6765. [PMID: 30997296 PMCID: PMC6462396 DOI: 10.7717/peerj.6765] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2018] [Accepted: 03/08/2019] [Indexed: 12/24/2022] Open
Abstract
BACKGROUND Worldwide cultivation of maize is often impacted negatively by drought stress. Hyperosmolality-gated calcium-permeable channels (OSCA) have been characterized as osmosensors in Arabidopsis. However, the involvement of members of the maize OSCA (ZmOSCA) gene family in response to drought stress is unknown. It is furthermore unclear which ZmOSCA gene plays a major role in genetic improvement of drought tolerance in Maize. METHODS We predicted the protein domain structure and transmembrane regions by using the NCBI Conserved Domain Database database and TMHMM server separately. The phylogeny tree was built by Mega7. We used the mixed linear model in TASSEL to perform the family-based association analysis. RESULTS In this report, 12 ZmOSCA genes were uncovered in the maize genome by a genome-wide survey and analyzed systematically to reveal their synteny and phylogenetic relationship with the genomes of rice, maize, and sorghum. These analyses indicated a relatively conserved evolutionary history of the ZmOSCA gene family. Protein domain and transmembrane analysis indicated that most of the 12 ZmOSCAs shared similar structures with their homologs. The result of differential expression analysis under drought at various stages, as well as the expression profiles in 15 tissues, revealed a functional divergence of ZmOSCA genes. Notably, the expression level of ZmOSCA4.1 being up-regulated in both seedlings and adult leaves. Notably, the association analysis between genetic variations in these genes and drought tolerance was detected. Significant associations between genetic variation in ZmOSCA4.1 and drought tolerance were found at the seedling stage. Our report provides a detailed analysis of the ZmOSCAs in the maize genome. These findings will contribute to future studies on the functional characterization of ZmOSCA proteins in response to water deficit stress, as well as understanding the mechanism of genetic variation in drought tolerance in maize.
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Affiliation(s)
- Shuangcheng Ding
- Agricultural College, Yangtze University, Jingzhou, China
- Hubei Collaborative Innovation Center for Grain Industry, Yangtze University, Jingzhou, China
| | - Xin Feng
- Agricultural College, Yangtze University, Jingzhou, China
| | - Hewei Du
- College of Life Science, Yangtze University, Jingzhou, China
| | - Hongwei Wang
- Agricultural College, Yangtze University, Jingzhou, China
- Hubei Collaborative Innovation Center for Grain Industry, Yangtze University, Jingzhou, China
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27
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Yang Z, Wang C, Xue Y, Liu X, Chen S, Song C, Yang Y, Guo Y. Calcium-activated 14-3-3 proteins as a molecular switch in salt stress tolerance. Nat Commun 2019; 10:1199. [PMID: 30867421 PMCID: PMC6416337 DOI: 10.1038/s41467-019-09181-2] [Citation(s) in RCA: 123] [Impact Index Per Article: 24.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2018] [Accepted: 02/20/2019] [Indexed: 11/09/2022] Open
Abstract
Calcium is a universal secondary messenger that triggers many cellular responses. However, it is unclear how a calcium signal is coordinately decoded by different calcium sensors, which in turn regulate downstream targets to fulfill a specific physiological function. Here we show that SOS2-LIKE PROTEIN KINASE5 (PKS5) can negatively regulate the Salt-Overly-Sensitive signaling pathway in Arabidopsis. PKS5 can interact with and phosphorylate SOS2 at Ser294, promote the interaction between SOS2 and 14-3-3 proteins, and repress SOS2 activity. However, salt stress promotes an interaction between 14-3-3 proteins and PKS5, repressing its kinase activity and releasing inhibition of SOS2. We provide evidence that 14-3-3 proteins bind to Ca2+, and that Ca2+ modulates 14-3-3-dependent regulation of SOS2 and PKS5 kinase activity. Our results suggest that a salt-induced calcium signal is decoded by 14-3-3 and SOS3/SCaBP8 proteins, which selectively activate/inactivate the downstream protein kinases SOS2 and PKS5 to regulate Na+ homeostasis by coordinately mediating plasma membrane Na+/H+ antiporter and H+-ATPase activity.
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Affiliation(s)
- Zhijia Yang
- State Key Laboratory of Plant Physiology and Biochemistry, College of Biological Sciences, China Agricultural University, 100193, Beijing, China
| | - Chongwu Wang
- State Key Laboratory of Plant Physiology and Biochemistry, College of Biological Sciences, China Agricultural University, 100193, Beijing, China
| | - Yuan Xue
- State Key Laboratory of Plant Physiology and Biochemistry, College of Biological Sciences, China Agricultural University, 100193, Beijing, China
| | - Xiao Liu
- State Key Laboratory of Plant Physiology and Biochemistry, College of Biological Sciences, China Agricultural University, 100193, Beijing, China
| | - She Chen
- National Institute of Biological Sciences, Beijing, 7 Science Park Road, Zhongguancun Life Science Park, 102206, Beijing, China
| | - ChunPeng Song
- Collaborative Innovation Center of Crop Stress Biology, Henan Province, Institute of Plant Stress Biology, Henan University, 475001, Kaifeng, China
| | - Yongqing Yang
- State Key Laboratory of Plant Physiology and Biochemistry, College of Biological Sciences, China Agricultural University, 100193, Beijing, China.
| | - Yan Guo
- State Key Laboratory of Plant Physiology and Biochemistry, College of Biological Sciences, China Agricultural University, 100193, Beijing, China.
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28
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Spatial and Temporal Calcium Signaling and Its Physiological Effects in Moso Bamboo under Drought Stress. FORESTS 2019. [DOI: 10.3390/f10030224] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Elevations in cytosolic free calcium concentration constitute a fundamental signal transduction mechanism in plants; however, the particular characteristics of calcium ion (Ca2+) signal occurrence in plants is still under debate. Little is known about how stimulus-specific Ca2+ signal fluctuations are generated. Therefore, we investigated the identity of the Ca2+ signal generation pathways, influencing factors, and the effects of the signaling network under drought stress on Phyllostachys edulis (Carrière) J. Houz. Non-invasive micro testing and laser confocal microscopy technology were used as platforms to detect and record Ca2+ signaling in live root tip and leaf cells of P. edulis under drought stress. We found that Ca2+ signal intensity (absorption capacity) positively correlated with degree of drought stress in the P. edulis shoots, and that Ca2+ signals in different parts of the root tip of P. edulis were different when emitted in response to drought stress. This difference was reflected in the Ca2+ flux and in regional distribution of Ca2+. Extracellular Ca2+ transport requires the involvement of the plasma membrane Ca2+ channels, while abscisic acid (ABA) can activate the plasma membrane Ca2+ channels. Additionally, Ca2+ acted as the upstream signal of H2O2 in the signaling network of P. edulis under drought stress. Ca2+ was also involved in the signal transduction process of ABA, and ABA can promote the production of Ca2+ signals in P. edulis leaves. Our findings revealed the physiological role of Ca2+ in drought resistance of P. edulis. This study establishes a theoretical foundation for research on the response to Ca2+ signaling in P. edulis.
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Wang Y, Wei F, Zhou H, Liu N, Niu X, Yan C, Zhang L, Han S, Hou C, Wang D. TaCAMTA4, a Calmodulin-Interacting Protein, Involved in Defense Response of Wheat to Puccinia triticina. Sci Rep 2019; 9:641. [PMID: 30679453 PMCID: PMC6345913 DOI: 10.1038/s41598-018-36385-1] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2018] [Accepted: 11/15/2018] [Indexed: 11/09/2022] Open
Abstract
Leaf rust caused by Puccinia triticina is one of the main diseases affecting wheat (Triticum aestivum) production worldwide. Calmodulin (CaM) was found involved in the early stage of signal transduction pathway in response to P. triticina in wheat. To study the function and molecular mechanism of calmodulin (CaM) in signal transduction of wheat against P. triticina, we cloned a putative calmodulin-binding transcription activator (TaCAMTA4), and characterized its molecular structure and functions by using the CaM-encoding gene (TaCaM4-1) as a bait to screen the cDNA library from P. triticina infected wheat leaves. The open reading frame of TaCAMTA4 was 2505 bp encoding a protein of 834 aa, which contained all the four conserved domains of family (CG-1 domain, TIG domain, ANK repeats and CaM-binding domain). TaCaM4-1 bound to TaCAMTA4 by the C-terminal CaM-binding domain in Ca2+-dependent manner in the electrophoretic mobility shift assay (EMSA). Bimolecular fluorescence complementation (BiFC) analysis indicated that the interaction of TaCAMTA4 and TaCaM4-1 took place in the cytoplasm and nucleus of epidermal leaf cells in N. benthamiana. The expression level of TaCAMTA4 genes was down-regulated in incompatible combination after P. triticina infection. Furthermore, virus-induced gene silencing (VIGS)-based knockdown of TaCAMTA4 and disease assays verified that silencing of TaCAMTA4 resulted in enhanced resistance to P. triticina race 165. These results suggested that TaCAMTA4 function as negative regulator of defense response against P. triticina.
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Affiliation(s)
- Yuelin Wang
- Key Laboratory of Hebei Province for Plant Physiology and Molecular Pathology, College of Life Sciences, Hebei Agriculture University, Baoding, 071001, China
| | - Fengju Wei
- Key Laboratory of Hebei Province for Plant Physiology and Molecular Pathology, College of Life Sciences, Hebei Agriculture University, Baoding, 071001, China.
| | - Hui Zhou
- Key Laboratory of Hebei Province for Plant Physiology and Molecular Pathology, College of Life Sciences, Hebei Agriculture University, Baoding, 071001, China
| | - Na Liu
- Key Laboratory of Hebei Province for Plant Physiology and Molecular Pathology, College of Life Sciences, Hebei Agriculture University, Baoding, 071001, China
| | - Xiaonan Niu
- Key Laboratory of Hebei Province for Plant Physiology and Molecular Pathology, College of Life Sciences, Hebei Agriculture University, Baoding, 071001, China
| | - Chao Yan
- Key Laboratory of Hebei Province for Plant Physiology and Molecular Pathology, College of Life Sciences, Hebei Agriculture University, Baoding, 071001, China
| | - Lifeng Zhang
- Key Laboratory of Hebei Province for Plant Physiology and Molecular Pathology, College of Life Sciences, Hebei Agriculture University, Baoding, 071001, China
| | - Shengfang Han
- Key Laboratory of Hebei Province for Plant Physiology and Molecular Pathology, College of Life Sciences, Hebei Agriculture University, Baoding, 071001, China
| | - Chunyan Hou
- Key Laboratory of Hebei Province for Plant Physiology and Molecular Pathology, College of Life Sciences, Hebei Agriculture University, Baoding, 071001, China.
| | - Dongmei Wang
- Key Laboratory of Hebei Province for Plant Physiology and Molecular Pathology, College of Life Sciences, Hebei Agriculture University, Baoding, 071001, China.
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Makokha P, Matasyoh LG, Ssali RT, Kiplagat OK, Wanjala BW, Low J. Optimization of nutrient media for sweetpotato ( Ipomoea batatas L.) vine multiplication in sandponics: Unlocking the adoption and utilization of improved varieties. Gates Open Res 2018; 2:59. [PMID: 31363713 PMCID: PMC6635673 DOI: 10.12688/gatesopenres.12879.1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/07/2018] [Indexed: 12/23/2022] Open
Abstract
Background: Sweetpotato, being a vegetatively propagated crop is prone to seed degeneration, and a continuous source for high quality sweetpotato seed is critical for an efficient seed system. In most Sub-Saharan African countries, the National Agricultural Research Systems use tissue culture to produce limited quantity of pre-basic sweetpotato seed which is then used as starting material to maintain and produce basic seed in mini-screen houses, net tunnels or open field multiplication in low-virus pressure areas by either the private seed companies or vine multipliers. Soil is the predominant media for pre-basic seed multiplication. Multiplying pre-basic sweetpotato seed in sand with fertigation, also known as 'sandponics' is a possible opportunity towards sustainable production of pre-basic sweetpotato seed. It would be beneficial to examine the feasibility and the potential to replace soil system with 'sandponics' for growing pre-basic sweetpotato seed. Methods: Pot experiments were conducted to study how sweetpotato vine propagation is affected by sequentially omitting nitrogen, phosphorus, calcium, sulfur and boron from fertilizer applications on cv. Kabode. The experiment was laid in a randomized complete block design with five levels of the factor fertilizer, replicated four times with two blocks. The effect of fertilization of nitrogen at (0, 100, 150, 200 & 250), phosphorus at (0, 30, 60, 90 & 120), calcium at (0, 100, 200, 300 & 400), sulfur at (0, 30, 60, 90 & 120) and boron at (0, 0.1, 0.2, 0.3 & 0.4) ppm on sweetpotato vegetative growth parameters was measured 45 days after planting. Results: The obtained results showed that application of 200, 60, 200, 120 and 0.3 ppm of N, P, Ca, S and B respectively recorded the highest values in sweetpotato vegetative growth parameters. Conclusions: These results imply that pre-basic sweetpotato vine yields in sandponics could be increased by using this optimized media.
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Affiliation(s)
- Phabian Makokha
- International Potato Center, Nairobi, Sub-Saharan Africa, Kenya
| | - Lexa G. Matasyoh
- Department of Biological Sciences, University of Eldoret, Eldoret, Kenya
| | - Reuben T. Ssali
- International Potato Center, Kampala, Sub-Saharan Africa, Uganda
| | | | | | - Jan Low
- International Potato Center, Nairobi, Sub-Saharan Africa, Kenya
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Sujkowska-Rybkowska M, Znojek E. Localization of calreticulin and calcium ions in mycorrhizal roots of Medicago truncatula in response to aluminum stress. JOURNAL OF PLANT PHYSIOLOGY 2018; 229:22-31. [PMID: 30025219 DOI: 10.1016/j.jplph.2018.05.014] [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: 04/13/2018] [Accepted: 05/15/2018] [Indexed: 05/03/2023]
Abstract
Aluminum (Al) toxicity limits growth and symbiotic interactions of plants. Calcium plays essential roles in abiotic stresses and legume-Rhizobium symbiosis, but the sites and mechanism of Ca2+ mobilization during mycorrhizae have not been analyzed. In this study, the changes of cytoplasmic Ca2+ and calreticulin (CRT) in Medicago truncatula mycorrhizal (MR) and non-mycorrizal (NM) roots under short Al stress [50 μM AlCl3 pH 4.3 for 3 h] were analyzed. Free Ca2+ ions were detected cytochemically by their reaction with potassium pyroantimonate and anti-CRT antibody was used to locate this protein in Medicago roots by immunocytochemical methods. In MR and NM roots, Al induced accumulation of CRT and free Ca2+. Similar calcium and CRT distribution in the MR were found at the surface of fungal structures (arbuscules and intercellular hyphae), cell wall and in plasmodesmata, and in plant and fungal intracellular compartments. Additionally, degenerated arbuscules were associated with intense Ca2+ and CRT accumulation. In NM roots, Ca2+ and CRT epitopes were observed in the stele, near wall of cortex and endodermis. The present study provides new insight into Ca2+ storage and mobilization in mycorrhizae symbiosis. The colocalization of CRT and Ca2+ suggests that CRT is essential for calcium mobilization for normal mycorrhiza development and response to Al stress.
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Affiliation(s)
- Marzena Sujkowska-Rybkowska
- Department of Botany, Faculty of Agriculture and Biology, Warsaw University of Life Sciences-SGGW, Nowoursynowska 159, 02-776, Warsaw, Poland.
| | - Ewa Znojek
- Department of Botany, Faculty of Agriculture and Biology, Warsaw University of Life Sciences-SGGW, Nowoursynowska 159, 02-776, Warsaw, Poland
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Shi S, Li S, Asim M, Mao J, Xu D, Ullah Z, Liu G, Wang Q, Liu H. The Arabidopsis Calcium-Dependent Protein Kinases (CDPKs) and Their Roles in Plant Growth Regulation and Abiotic Stress Responses. Int J Mol Sci 2018; 19:E1900. [PMID: 29958430 PMCID: PMC6073581 DOI: 10.3390/ijms19071900] [Citation(s) in RCA: 93] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2018] [Accepted: 06/21/2018] [Indexed: 02/06/2023] Open
Abstract
As a ubiquitous secondary messenger in plant signaling systems, calcium ions (Ca2+) play essential roles in plant growth and development. Within the cellular signaling network, the accurate decoding of diverse Ca2+ signal is a fundamental molecular event. Calcium-dependent protein kinases (CDPKs), identified commonly in plants, are a kind of vital regulatory protein deciphering calcium signals triggered by various developmental and environmental stimuli. This review chiefly introduces Ca2+ distribution in plant cells, the classification of Arabidopsis thaliana CDPKs (AtCDPKs), the identification of the Ca2+-AtCDPK signal transduction mechanism and AtCDPKs’ functions involved in plant growth regulation and abiotic stress responses. The review presents a comprehensive overview of AtCDPKs and may contribute to the research of CDPKs in other plants.
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Affiliation(s)
- Sujuan Shi
- Tobacco Research Institute, Chinese Academy of Agricultural Sciences, Qingdao 266101, China.
| | - Shugui Li
- Tobacco Research Institute, Chinese Academy of Agricultural Sciences, Qingdao 266101, China.
- College of Agriculture, Qingdao Agricultural University, Qingdao 266109, China.
| | - Muhammad Asim
- Tobacco Research Institute, Chinese Academy of Agricultural Sciences, Qingdao 266101, China.
| | - Jingjing Mao
- Tobacco Research Institute, Chinese Academy of Agricultural Sciences, Qingdao 266101, China.
| | - Dizhi Xu
- Tobacco Research Institute, Chinese Academy of Agricultural Sciences, Qingdao 266101, China.
| | - Zia Ullah
- Tobacco Research Institute, Chinese Academy of Agricultural Sciences, Qingdao 266101, China.
| | - Guanshan Liu
- Tobacco Research Institute, Chinese Academy of Agricultural Sciences, Qingdao 266101, China.
| | - Qian Wang
- Tobacco Research Institute, Chinese Academy of Agricultural Sciences, Qingdao 266101, China.
| | - Haobao Liu
- Tobacco Research Institute, Chinese Academy of Agricultural Sciences, Qingdao 266101, China.
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Cheng L, Wang Y, Liu Y, Zhang Q, Gao H, Zhang F. Comparative proteomics illustrates the molecular mechanism of potato (Solanum tuberosum L.) tuberization inhibited by exogenous gibberellins in vitro. PHYSIOLOGIA PLANTARUM 2018; 163:103-123. [PMID: 29135031 DOI: 10.1111/ppl.12670] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/08/2017] [Revised: 10/31/2017] [Accepted: 11/08/2017] [Indexed: 05/24/2023]
Abstract
Among the multiple environmental signals and hormonal factors regulating potato tuberization, gibberellins (GAs) are important components of the signaling pathways in these processes. To understand the GAs-signaling response mechanism of potato tuberization, a comparative proteomics approach was applied to analyze proteome change of potato tuberization in vitro subjected to a range of exogenous GA3 treatments (0, 0.01, 0.1 and 1.0 μM) using two-dimensional gel electrophoresis. Quantitative image analyses showed that a total of 37 protein spots have their abundance significantly altered more than 2-fold. Among these proteins, 13 proteins were up-regulated, 13 proteins were down-regulated, one protein was absent and 10 proteins were induced after treatment by exogenous GA3 . The MALDI-TOF/TOF MS analyses led to the identification of differentially abundant proteins that are mainly involved in bioenergy and metabolism, storage, signaling, cell defense and rescue, transcription, chaperones, transport. Furthermore, the comparative analysis of GA3 -responsive proteome allowed for general elucidation of underlying molecular mechanisms of potato tuberization inhibited by exogenous GA3 . Most of these cellular processes were not conducive to the transition from stolon elongation to tuber formation, including a blockage of starch and storage protein accumulation, the accelerated carbohydrate catabolism, a blockage of JA biosynthesis but an elevated endogenous GAs level, the amplification of GA3 signal transduction by other signaling pathways, and the regulation of cellular RNA metabolism for controlling tuberization. Our results firstly integrated physiology and proteome data to provide new insights into GA3 -signaling response mechanisms of potato tuberization in vitro.
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Affiliation(s)
- Lixiang Cheng
- College of Agronomy, Gansu Provincial Key Laboratory of Aridland Crop Science, Gansu Key Laboratory of Crop Improvement & Germplasm Enhancement, Gansu Agricultural University, Lanzhou, China
| | - Yuping Wang
- College of Agronomy, Gansu Provincial Key Laboratory of Aridland Crop Science, Gansu Key Laboratory of Crop Improvement & Germplasm Enhancement, Gansu Agricultural University, Lanzhou, China
| | - Yueshan Liu
- College of Agronomy, Gansu Provincial Key Laboratory of Aridland Crop Science, Gansu Key Laboratory of Crop Improvement & Germplasm Enhancement, Gansu Agricultural University, Lanzhou, China
| | - Qingquan Zhang
- College of Agronomy, Gansu Provincial Key Laboratory of Aridland Crop Science, Gansu Key Laboratory of Crop Improvement & Germplasm Enhancement, Gansu Agricultural University, Lanzhou, China
| | - Huihui Gao
- College of Agronomy, Gansu Provincial Key Laboratory of Aridland Crop Science, Gansu Key Laboratory of Crop Improvement & Germplasm Enhancement, Gansu Agricultural University, Lanzhou, China
| | - Feng Zhang
- College of Agronomy, Gansu Provincial Key Laboratory of Aridland Crop Science, Gansu Key Laboratory of Crop Improvement & Germplasm Enhancement, Gansu Agricultural University, Lanzhou, China
- College of Life Science and Technology, Gansu Agricultural University, Lanzhou, China
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Transcriptome analysis of genes involved in defense against alkaline stress in roots of wild jujube (Ziziphus acidojujuba). PLoS One 2017; 12:e0185732. [PMID: 28976994 PMCID: PMC5627934 DOI: 10.1371/journal.pone.0185732] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2017] [Accepted: 09/18/2017] [Indexed: 11/19/2022] Open
Abstract
Wild jujube (Ziziphus acidojujuba Mill.) is highly tolerant to alkaline, saline and drought stress; however, no studies have performed transcriptome profiling to study the response of wild jujube to these and other abiotic stresses. In this study, we examined the tolerance of wild jujube to NaHCO3-NaOH solution and analyzed gene expression profiles in response to alkaline stress. Physiological experiments revealed that H2O2 content in leaves increased significantly and root activity decreased quickly during alkaline of pH 9.5 treatment. For transcriptome analysis, wild jujube plants grown hydroponically were treated with NaHCO3-NaOH solution for 0, 1, and 12 h and six transcriptomes from roots were built. In total, 32,758 genes were generated, and 3,604 differentially expressed genes (DEGs) were identified. After 1 h, 853 genes showed significantly different expression between control and treated plants; after 12 h, expression of 2,856 genes was significantly different. The expression pattern of nine genes was validated by quantitative real-time PCR. After gene annotation and gene ontology enrichment analysis, the genes encoding transcriptional factors, serine/threonine-protein kinases, heat shock proteins, cysteine-like kinases, calmodulin-like proteins, and reactive oxygen species (ROS) scavengers were found to be closely involved in alkaline stress response. These results will provide useful insights for elucidating the mechanisms underlying alkaline tolerance in wild jujube.
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He YY, Wang YB, Zheng Z, Liu FM, An ML, He XD, Qu CF, Li LL, Miao JL. Cloning and Stress-Induced Expression Analysis of Calmodulin in the Antarctic Alga Chlamydomonas sp. ICE-L. Curr Microbiol 2017; 74:921-929. [PMID: 28516199 DOI: 10.1007/s00284-017-1263-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2017] [Accepted: 05/06/2017] [Indexed: 12/28/2022]
Abstract
Calmodulin (CaM) is a Ca2+-binding protein that plays a role in several Ca2+ signaling pathways, which dynamically regulates the activities of hundreds of proteins. The ice alga Chlamydomonas sp. ICE-L, which has the ability to adapt to extreme polar conditions, is a crucial primary producer in Antarctic ecosystem. This study hypothesized that Cam helps the ICE-L to adapt to the fluctuating conditions in the polar environment. It first verified the overall length of Cam, through RT-PCR and RACE-PCR, based on partial Cam transcriptome library of ICE-L. Then, the nucleotide and predicted amino acid sequences were, respectively, analyzed by various bioinformatics approaches to gain more insights into the computed physicochemical properties of the CaM. Potential involvements of Cam in responding to certain stimuli (i.e., UVB radiation, high salinity, and temperature) were investigated by differential expression, measuring its transcription levels by means of quantitative RT-PCR. Results showed that CaM was indeed inducible and regulated by high UVB radiation, high salinity, and nonoptimal temperature conditions. Different conditions had different expression tendencies, which provided an important basis for investigating the adaptation mechanism of Cam in ICE-L.
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Affiliation(s)
- Ying-Ying He
- The First Institute of Oceanography, State Oceanic Administration, No. 6 of Xianxialing Road, Qingdao, 266061, China.,Key Laboratory of Marine Bioactive Substances, SOA, Qingdao, 266061, China
| | - Yi-Bin Wang
- The First Institute of Oceanography, State Oceanic Administration, No. 6 of Xianxialing Road, Qingdao, 266061, China. .,Key Laboratory of Marine Bioactive Substances, SOA, Qingdao, 266061, China. .,Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266235, China.
| | - Zhou Zheng
- The First Institute of Oceanography, State Oceanic Administration, No. 6 of Xianxialing Road, Qingdao, 266061, China.,Key Laboratory of Marine Bioactive Substances, SOA, Qingdao, 266061, China.,Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266235, China
| | - Fang-Ming Liu
- The First Institute of Oceanography, State Oceanic Administration, No. 6 of Xianxialing Road, Qingdao, 266061, China.,Key Laboratory of Marine Bioactive Substances, SOA, Qingdao, 266061, China.,Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266235, China
| | - Mei-Ling An
- The First Institute of Oceanography, State Oceanic Administration, No. 6 of Xianxialing Road, Qingdao, 266061, China.,Key Laboratory of Marine Bioactive Substances, SOA, Qingdao, 266061, China
| | - Xiao-Dong He
- The First Institute of Oceanography, State Oceanic Administration, No. 6 of Xianxialing Road, Qingdao, 266061, China.,Key Laboratory of Marine Bioactive Substances, SOA, Qingdao, 266061, China
| | - Chang-Feng Qu
- The First Institute of Oceanography, State Oceanic Administration, No. 6 of Xianxialing Road, Qingdao, 266061, China.,Key Laboratory of Marine Bioactive Substances, SOA, Qingdao, 266061, China
| | - Lu-Lu Li
- The First Institute of Oceanography, State Oceanic Administration, No. 6 of Xianxialing Road, Qingdao, 266061, China.,Key Laboratory of Marine Bioactive Substances, SOA, Qingdao, 266061, China
| | - Jin-Lai Miao
- The First Institute of Oceanography, State Oceanic Administration, No. 6 of Xianxialing Road, Qingdao, 266061, China. .,Key Laboratory of Marine Bioactive Substances, SOA, Qingdao, 266061, China. .,Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266235, China.
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Zhang T, Hu S, Yan C, Li C, Zhao X, Wan S, Shan S. Mining, identification and function analysis of microRNAs and target genes in peanut (Arachis hypogaea L.). PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2017; 111:85-96. [PMID: 27915176 DOI: 10.1016/j.plaphy.2016.11.018] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2016] [Revised: 11/03/2016] [Accepted: 11/23/2016] [Indexed: 06/06/2023]
Abstract
In the present investigation, a total of 60 conserved peanut (Arachis hypogaea L.) microRNA (miRNA) sequences, belonging to 16 families, were identified using bioinformatics methods. There were 392 target gene sequences, identified from 58 miRNAs with Target-align software and BLASTx analyses. Gene Ontology (GO) functional analysis suggested that these target genes were involved in mediating peanut growth and development, signal transduction and stress resistance. There were 55 miRNA sequences, verified employing a poly (A) tailing test, with a success rate of up to 91.67%. Twenty peanut target gene sequences were randomly selected, and the 5' rapid amplification of the cDNA ends (5'-RACE) method were used to validate the cleavage sites of these target genes. Of these, 14 (70%) peanut miRNA targets were verified by means of gel electrophoresis, cloning and sequencing. Furthermore, functional analysis and homologous sequence retrieval were conducted for target gene sequences, and 26 target genes were chosen as the objects for stress resistance experimental study. Real-time fluorescence quantitative PCR (qRT-PCR) technology was applied to measure the expression level of resistance-associated miRNAs and their target genes in peanut exposed to Aspergillus flavus (A. flavus) infection and drought stress, respectively. In consequence, 5 groups of miRNAs & targets were found accorded with the mode of miRNA negatively controlling the expression of target genes. This study, preliminarily determined the biological functions of some resistance-associated miRNAs and their target genes in peanut.
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Affiliation(s)
- Tingting Zhang
- Shandong Peanut Research Institute, Qingdao, 266100, China
| | - Shuhao Hu
- Shandong Peanut Research Institute, Qingdao, 266100, China; Shandong University, Weihai, 264200, China
| | - Caixia Yan
- Shandong Peanut Research Institute, Qingdao, 266100, China
| | - Chunjuan Li
- Shandong Peanut Research Institute, Qingdao, 266100, China
| | - Xiaobo Zhao
- Shandong Peanut Research Institute, Qingdao, 266100, China
| | - Shubo Wan
- Shandong Academy of Agricultural Sciences, Jinan, 250100, China.
| | - Shihua Shan
- Shandong Peanut Research Institute, Qingdao, 266100, China.
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Sanyal SK, Kanwar P, Yadav AK, Sharma C, Kumar A, Pandey GK. Arabidopsis CBL interacting protein kinase 3 interacts with ABR1, an APETALA2 domain transcription factor, to regulate ABA responses. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2017; 254:48-59. [PMID: 27964784 DOI: 10.1016/j.plantsci.2016.11.004] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2016] [Revised: 11/04/2016] [Accepted: 11/07/2016] [Indexed: 05/08/2023]
Abstract
Calcium (Ca2+) plays a vital role as a second messenger in several signaling pathways in plants. The calcineurin B-like proteins (CBLs) represent a family of plant calcium-binding proteins that function in propagating Ca2+ signals by interacting with CBL interacting protein kinases (CIPKs). Phosphorylation of CBL by CIPK is essential for the module to display full activity towards its target protein. Previous genetic analysis showed that the function of CBL9-CIPK3 module was implicated in negatively regulating seed germination and early development. In the present study, we have biochemically investigated the interaction of CBL9-CIPK3 module and our findings show that CBL9 is phosphorylated by CIPK3. Moreover, Abscisic acid repressor 1 (ABR1) is identified as the downstream target of CIPK3 and CIPK3-ABR1 function to regulate ABA responses during seed germination. Our study also indicates that the role of ABR1 is not limited to seed germination but it also regulates the ABA dependent processes in the adult stage of plant development. Combining our results, we conclude that the CBL9-CIPK3-ABR1 pathway functions to regulate seed germination and ABA dependent physiological processes in Arabidopsis.
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Affiliation(s)
- Sibaji K Sanyal
- Department of Plant Molecular Biology, University of Delhi South Campus, Benito Juarez Road, Dhaula Kuan, New Delhi, 110021, India
| | - Poonam Kanwar
- Department of Plant Molecular Biology, University of Delhi South Campus, Benito Juarez Road, Dhaula Kuan, New Delhi, 110021, India
| | - Akhilesh K Yadav
- Department of Plant Molecular Biology, University of Delhi South Campus, Benito Juarez Road, Dhaula Kuan, New Delhi, 110021, India
| | - Cheshta Sharma
- Department of Plant Molecular Biology, University of Delhi South Campus, Benito Juarez Road, Dhaula Kuan, New Delhi, 110021, India
| | - Ashish Kumar
- Department of Plant Molecular Biology, University of Delhi South Campus, Benito Juarez Road, Dhaula Kuan, New Delhi, 110021, India
| | - Girdhar K Pandey
- Department of Plant Molecular Biology, University of Delhi South Campus, Benito Juarez Road, Dhaula Kuan, New Delhi, 110021, India.
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Cheng Y, Lu L, Yang Z, Wu Z, Qin W, Yu D, Ren Z, Li Y, Wang L, Li F, Yang Z. GhCaM7-like, a calcium sensor gene, influences cotton fiber elongation and biomass production. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2016; 109:128-136. [PMID: 27669397 DOI: 10.1016/j.plaphy.2016.09.009] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2016] [Revised: 08/31/2016] [Accepted: 09/12/2016] [Indexed: 05/26/2023]
Abstract
Calcium signaling regulates many developmental processes in plants. Calmodulin (CaM) is one of the most conserved calcium sensors and has a flexible conformation in eukaryotes. The molecular functions of CaM are unknown in cotton, which is a major source of natural fiber. In this study, a Gossypium hirsutum L.CaM7-like gene was isolated from upland cotton. Bioinformatics analysis indicated that the GhCaM7-like gene was highly conserved as compared with Arabidopsis AtCaM7. The GhCaM7-like gene showed a high expression level in elongating fibers. Expression of β-glucuronidase was observed in trichomes on the stem, leaf and root in transgenic Arabidopsis plants of a PROGhCaM7-like:GUS fusion. Silencing of the GhCaM7-like gene resulted in decreased fiber length, but also caused reduction in stem height, leaf dimensions, seed length and 100-seed weight, in comparison with those of the control. Reduced expression of the GhCaM7-like gene caused decreased Ca2+ influx in cells of the leaf hypodermis and stem apex, and down-regulation of GhIQD1 (IQ67-domain containing protein), GhAnn2 (Annexins) and GhEXP2 (Expansin). These results indicate that the GhCaM7-like gene plays a vital role in calcium signaling pathways, and may regulate cotton fiber elongation and biomass production by affecting Ca2+ signatures and downstream signaling pathways of CaM.
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Affiliation(s)
- Yuan Cheng
- State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang 455000, China; Huazhong Agricultural University, Wuhan 430070, China
| | - Lili Lu
- State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang 455000, China
| | - Zhaoen Yang
- State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang 455000, China
| | - Zhixia Wu
- State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang 455000, China
| | - Wenqiang Qin
- State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang 455000, China
| | - Daoqian Yu
- State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang 455000, China
| | - Zhongying Ren
- State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang 455000, China
| | - Yi Li
- State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang 455000, China
| | - Lingling Wang
- State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang 455000, China
| | - Fuguang Li
- State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang 455000, China.
| | - Zuoren Yang
- State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang 455000, China.
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Xu L, Zhang D, Xu Z, Huang Y, He X, Wang J, Gu M, Li J, Shao H. Comparative expression analysis of Calcineurin B-like family gene CBL10A between salt-tolerant and salt-sensitive cultivars in B. oleracea. THE SCIENCE OF THE TOTAL ENVIRONMENT 2016; 571:1-10. [PMID: 27449606 DOI: 10.1016/j.scitotenv.2016.07.130] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/01/2016] [Revised: 07/14/2016] [Accepted: 07/18/2016] [Indexed: 06/06/2023]
Abstract
Calcineurin B-like proteins (CBLs) are plant calcium sensors that play a critical role in the regulation of plant growth and response to stress. Many CBLs have been identified in the calcium signaling pathway in both Arabidopsis and rice. However, information about BoCBLs genes from Brassica oleracea has not been reported. In the present study, we identified 13 candidate CBL genes in the B. oleracea genome based on the conserved domain of the Calcineurin B-like family, and we carried out a phylogenetic analysis of CBLs among Arabidopsis, rice, maize, cabbage and B. oleracea. For B. oleracea, the distribution of the predicted BoCBL genes was uneven among the five chromosomes. Sequence analysis showed that the nucleotide sequences and corresponding protein structure of BoCBLs were highly conserved, i.e., all of the putative BoCBLs contained 6-8 introns, and most of the exons of those genes contained the same number of nucleotides and had high sequence identities. All BoCBLs consisted of four EF-Hand functional domains, and the distance between the EF-hand motifs was conserved. Evolutionary analysis revealed that the CBLs were classified into two subgroups. Additionally, the CBL10A gene was cloned from salt-tolerant (CB6) and salt-sensitive (CB3) cultivars using RT-PCR. The results indicated that the cloned gene had a substantial difference in length (741bp in CB3 and 829bp in CB6) between these two cultivars. The deduced CBL10A protein in CB6 had four EF-hand structural domains, which have an irreplaceable role in calcium-binding and have calcineurin A subunit binding sites, while the BoCBL10A protein in CB3 had only two EF-hand structural domains and lacked calcineurin A subunit binding sites. The expression level of the BoCBL10A gene between salt tolerance (CB6)and sensitive varieties(CB3) under salt stress was significantly different (P<0.01 and P<0.05). The expression of BoCBL10A gene was relatively higher in salt-tolerant (CB6) cultivar under salt stress, with a longer period of up-regulation expression and a shorter time responding to salt, compared with the salt-sensitive (CB3) cultivar. We speculate that these differences in the coding region of BoCBL10A may lead to the different salt responses between these two cultivars.
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Affiliation(s)
- Ling Xu
- Provincial Key Laboratory of Agrobiology, Institute of Biotechnology, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China
| | - Dayong Zhang
- Provincial Key Laboratory of Agrobiology, Institute of Biotechnology, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China
| | - Zhaolong Xu
- Provincial Key Laboratory of Agrobiology, Institute of Biotechnology, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China
| | - Yihong Huang
- Provincial Key Laboratory of Agrobiology, Institute of Biotechnology, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China
| | - Xiaolan He
- Provincial Key Laboratory of Agrobiology, Institute of Biotechnology, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China
| | - Jinyan Wang
- Provincial Key Laboratory of Agrobiology, Institute of Biotechnology, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China
| | - Minfeng Gu
- Xinyang Agricultural Experimental Station, Jiangsu Academy of Agricultural Sciences, Yancheng 224000, China.
| | - Jianbin Li
- Vegetable Research Institute, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China.
| | - Hongbo Shao
- Provincial Key Laboratory of Agrobiology, Institute of Biotechnology, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China.
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Boubakri H, Gargouri M, Mliki A, Brini F, Chong J, Jbara M. Vitamins for enhancing plant resistance. PLANTA 2016; 244:529-43. [PMID: 27315123 DOI: 10.1007/s00425-016-2552-0] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2016] [Accepted: 05/29/2016] [Indexed: 05/26/2023]
Abstract
This paper provides an overview on vitamins with inducing activities in plants, the molecular and cellular mechanisms implicated, and the hormonal signalling-network regulating this process. Moreover, it reports how vitamins might be part of the molecular events linked to induced resistance by the conventional elicitors. Induced resistance (IR), exploiting the plant innate-defense system is a sustainable strategy for plant disease control. In the last decade, vitamins have been proven to act as inducers of disease resistance, and these findings have received an important attention owing to their safety and cost effectiveness. Vitamins, including thiamine (TH, vitamin B1), riboflavin (RF, vitamin B2), menadione sodium bisulfite (MSB, vitamin K3), Para-aminobenzoic acid (PABA, vitamin Bx), and folic acid (FA, vitamin B9) provided an efficient protection against a wide range of pathogens through the modulation of specific host-defense facets. However, other vitamins, such as ascorbic acid (AA, vitamin C) and tocopherols (vitamin E), have been shown to be a part of the molecular mechanisms associated to IR. The present review is the first to summarize what vitamins are acting as inducers of disease resistance in plants and how could they be modulated by the conventional elicitors. Thus, this report provides an overview on the protective abilities of vitamins and the molecular and cellular mechanisms underlying their activities. Moreover, it describes the hormonal-signalling network regulating vitamin-signal transduction during IR. Finally, a biochemical model describing how vitamins are involved in the establishment of IR process is discussed.
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Affiliation(s)
- Hatem Boubakri
- Laboratory of Leguminous, Centre of Biotechnology of Borj-Cédria, 2050, Hammam-Lif, Tunisia.
| | - Mahmoud Gargouri
- Institute of Biological Chemistry, Washington State University, Pullman, WA, 99164, USA
- Laboratory of Plant Molecular Physiology, Centre of Biotechnology of Borj-Cédria, 2050, Hammam-Lif, Tunisia
| | - Ahmed Mliki
- Laboratory of Plant Molecular Physiology, Centre of Biotechnology of Borj-Cédria, 2050, Hammam-Lif, Tunisia
| | - Faiçal Brini
- Laboratory of Biotechnology and Plant Improvement, Centre of Biotechnology of Sfax, Route Sidi-Mansour, BP.1177, 3018, Sfax, Tunisia
| | - Julie Chong
- Laboratoire Vigne, Biotechnologies et Environnement (LVBE, EA3991), Université de Haute Alsace, 33 rue de Herrlisheim, 68000, Colmar, France
| | - Moez Jbara
- Laboratory of Leguminous, Centre of Biotechnology of Borj-Cédria, 2050, Hammam-Lif, Tunisia
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Munir S, Liu H, Xing Y, Hussain S, Ouyang B, Zhang Y, Li H, Ye Z. Overexpression of calmodulin-like (ShCML44) stress-responsive gene from Solanum habrochaites enhances tolerance to multiple abiotic stresses. Sci Rep 2016; 6:31772. [PMID: 27546315 PMCID: PMC4992891 DOI: 10.1038/srep31772] [Citation(s) in RCA: 77] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2016] [Accepted: 07/26/2016] [Indexed: 11/24/2022] Open
Abstract
Calmodulin-like (CML) proteins are important Ca(2+) sensors, which play significant role in mediating plant stress tolerance. In the present study, cold responsive calmodulin-like (ShCML44) gene was isolated from cold tolerant wild tomato (Solanum habrochaites), and functionally characterized. The ShCML44 was differentially expressed in all plant tissues including root, stem, leaf, flower and fruit, and was strongly up-regulated under cold, drought and salinity stresses along with plant growth hormones. Under cold stress, progressive increase in the expression of ShCML44 was observed particularly in cold-tolerant S. habrochaites. The ShCML44-overexpressed plants showed greater tolerance to cold, drought, and salinity stresses, and recorded higher germination and better seedling growth. Transgenic tomato plants demonstrated higher antioxidant enzymes activity, gas exchange and water retention capacity with lower malondialdehyde accumulation and membrane damage under cold and drought stresses compared to wild-type. Moreover, transgenic plants exhibited reduced reactive oxygen species and higher relative water contents under cold and drought stress, respectively. Greater stress tolerance of transgenic plants was further reflected by the up-/down-regulation of stress-related genes including SOD, GST, CAT, POD, LOX, PR and ERD. In crux, these results strengthen the molecular understanding of ShCML44 gene to improve the abiotic stress tolerance in tomato.
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Affiliation(s)
- Shoaib Munir
- Key Laboratory of Horticultural Plant Biology (Ministry of Education), College of Horticulture and Forestry Sciences, Huazhong Agricultural University, Wuhan 430070, China
| | - Hui Liu
- Key Laboratory of Biology and Genetic Resources of Rubber Tree, Ministry of Agriculture, Rubber Research Institute, Chinese Academy of Tropical Agricultural Sciences, Danzhou 571737, China
| | - Yali Xing
- Key Laboratory of Horticultural Plant Biology (Ministry of Education), College of Horticulture and Forestry Sciences, Huazhong Agricultural University, Wuhan 430070, China
| | - Saddam Hussain
- College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, China
| | - Bo Ouyang
- Key Laboratory of Horticultural Plant Biology (Ministry of Education), College of Horticulture and Forestry Sciences, Huazhong Agricultural University, Wuhan 430070, China
| | - Yuyang Zhang
- Key Laboratory of Horticultural Plant Biology (Ministry of Education), College of Horticulture and Forestry Sciences, Huazhong Agricultural University, Wuhan 430070, China
| | - Hanxia Li
- Key Laboratory of Horticultural Plant Biology (Ministry of Education), College of Horticulture and Forestry Sciences, Huazhong Agricultural University, Wuhan 430070, China
| | - Zhibiao Ye
- Key Laboratory of Horticultural Plant Biology (Ministry of Education), College of Horticulture and Forestry Sciences, Huazhong Agricultural University, Wuhan 430070, China
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42
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Fedorowicz-Strońska O, Koczyk G, Kaczmarek M, Krajewski P, Sadowski J. Genome-wide identification, characterisation and expression profiles of calcium-dependent protein kinase genes in barley (Hordeum vulgare L.). J Appl Genet 2016; 58:11-22. [PMID: 27447459 PMCID: PMC5243917 DOI: 10.1007/s13353-016-0357-2] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2016] [Revised: 06/21/2016] [Accepted: 06/27/2016] [Indexed: 11/30/2022]
Abstract
In plant cells, calcium-dependent protein kinases (CDPKs) are important sensors of Ca2+ flux resulting from various environmental stresses like cold, drought or salt stress. Previous genome sequence analysis and comparative studies in Arabidopsis (Arabidopsis thaliana L.) and rice (Oryza sativa L.) defined a multi-gene family of CDPKs. Here, we identified and characterised the CDPK gene complement of the model plant, barley (Hordeum vulgare L.). Comparative analysis encompassed phylogeny reconstruction based on newly available barley genome sequence, as well as established model genomes (e.g. O. sativa, A. thaliana, Brachypodium distachyon). Functional gene copies possessed characteristic CDPK domain architecture, including a serine/threonine kinase domain and four regulatory EF-hand motifs. In silico verification was followed by measurements of transcript abundance via real-time polymerase chain reaction (PCR). The relative expression of CDPK genes was determined in the vegetative growth stage under intensifying drought stress conditions. The majority of barley CDPK genes showed distinct changes in patterns of expression during exposure to stress. Our study constitutes evidence for involvement of the barley CDPK gene complement in signal transduction pathways relating to adaptation to drought. Our bioinformatics and transcriptomic analyses will provide an important foundation for further functional dissection of the barley CDPK gene family.
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Affiliation(s)
- Olga Fedorowicz-Strońska
- Institute of Plant Genetics, Polish Academy of Sciences, Strzeszynska 34, 60-479, Poznan, Poland.
| | - Grzegorz Koczyk
- Institute of Plant Genetics, Polish Academy of Sciences, Strzeszynska 34, 60-479, Poznan, Poland
| | - Małgorzata Kaczmarek
- Institute of Plant Genetics, Polish Academy of Sciences, Strzeszynska 34, 60-479, Poznan, Poland
| | - Paweł Krajewski
- Institute of Plant Genetics, Polish Academy of Sciences, Strzeszynska 34, 60-479, Poznan, Poland
| | - Jan Sadowski
- Institute of Molecular Biology and Biotechnology, Adam Mickiewicz University, Umultowska 89, 61-614, Poznan, Poland
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Intraspecies variation in sodium partitioning, potassium and proline accumulation under salt stress in Casuarina equisetifolia Forst. Symbiosis 2016. [DOI: 10.1007/s13199-016-0424-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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44
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Munir S, Khan MRG, Song J, Munir S, Zhang Y, Ye Z, Wang T. Genome-wide identification, characterization and expression analysis of calmodulin-like (CML) proteins in tomato (Solanum lycopersicum). PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2016; 102:167-79. [PMID: 26949025 DOI: 10.1016/j.plaphy.2016.02.020] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/13/2015] [Revised: 02/11/2016] [Accepted: 02/15/2016] [Indexed: 05/01/2023]
Abstract
Calcium (Ca(2+)) has emerged as a significant secondary messenger that regulates the activities of hormonal and environmental signals that are associated with biotic and abiotic stresses. Ca(2+) binding proteins typically contain a Ca(2+) binding EF-hand (a helix-loop-helix structure) motif. In this study, tomato genes encoding calmodulin-like (CML) proteins that possess EF-hand motifs and no other identifiable functional domains were analyzed. Using genome analysis and BLAST searches in database, 52 CML genes were identified in tomato. Comprehensive analyses, including evolutionary relationships, gene structures, chromosomal locations, functional annotations, and gene duplications, were performed. Distribution mapping exhibited that 52 SlCML proteins containing different intron/exon patterns were unevenly distributed among ten chromosomes. In addition, 24 SlCML proteins were predicted as segmentally duplicated. Conserved motifs, promoter cis-regulatory elements, organ-based expression patterns and expression analyses indicated the potential responsiveness of SlCML proteins to abiotic stresses and phytohormones. These results illustrate the complexity of the CML gene family and indicate a potential vital role for these molecules in tomato growth and development as Ca(2+) signal transducers.
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Affiliation(s)
- Shoaib Munir
- Key Laboratory of Horticultural Plant Biology (Ministry of Education), College of Horticulture and Forestry Science, Huazhong Agricultural University, Wuhan 430070, China
| | - Muhammad Rehman Gul Khan
- Key Laboratory of Horticultural Plant Biology (Ministry of Education), College of Horticulture and Forestry Science, Huazhong Agricultural University, Wuhan 430070, China
| | - Jianwen Song
- Key Laboratory of Horticultural Plant Biology (Ministry of Education), College of Horticulture and Forestry Science, Huazhong Agricultural University, Wuhan 430070, China
| | - Sadia Munir
- National R&D Branch Center for Conventional Freshwater Fish Processing, College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Yuyang Zhang
- Key Laboratory of Horticultural Plant Biology (Ministry of Education), College of Horticulture and Forestry Science, Huazhong Agricultural University, Wuhan 430070, China
| | - Zhibiao Ye
- Key Laboratory of Horticultural Plant Biology (Ministry of Education), College of Horticulture and Forestry Science, Huazhong Agricultural University, Wuhan 430070, China
| | - Taotao Wang
- Key Laboratory of Horticultural Plant Biology (Ministry of Education), College of Horticulture and Forestry Science, Huazhong Agricultural University, Wuhan 430070, China.
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45
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Zhang J, Liu S, Zhang L, Nian H, Chen L. Effect of aluminum stress on the expression of calmodulin and the role of calmodulin in aluminum tolerance. J Biosci Bioeng 2016; 122:558-562. [PMID: 27133707 DOI: 10.1016/j.jbiosc.2016.04.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2015] [Revised: 04/05/2016] [Accepted: 04/06/2016] [Indexed: 11/17/2022]
Abstract
Calmodulin (CaM) is a calcium ion-binding protein that regulates a variety of cellular functions through its downstream target proteins. Previous studies have reported that overexpression of CaM enhances tolerance to stress, including resistance to salt, heat, cold, drought and plant pathogens. In this study, the growth of Cryptococcus humicola was inhibited by the CaM inhibitor, trifluoperazine, under aluminum (Al) stress. The expression of CaM of C. humicola (ChCaM) was upregulated when the concentration and treatment time with Al was increased. These results indicate that Al stress affects the transcription and translation of ChCaM and that ChCaM may play an important role in Al tolerance. Transgenic ChCaM Saccharomyces cerevisiae was constructed and designated as Sc-ChCaM. The ability of Sc-ChCaM to develop resistance to Al was significantly higher than that of control yeast containing the empty vector pYES3/CT designated as Sc. The residual Al content in the medium containing ChCaM transgenic yeast in culture was significantly lower than the initial amount of Al added in the medium or the residual Al content in the medium containing the control yeast in culture. This finding suggests that ChCaM confers Al tolerance in transgenic yeast, and the absorption of active Al from the culture may be one reason for Al tolerance. These results indicate that ChCaM may be a candidate gene for Al tolerance in engineered plants.
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Affiliation(s)
- Jingjing Zhang
- Biotechnology Research Center, Kunming University of Science and Technology, Kunming 650500, China
| | - Shuai Liu
- Biotechnology Research Center, Kunming University of Science and Technology, Kunming 650500, China
| | - Lei Zhang
- Biotechnology Research Center, Kunming University of Science and Technology, Kunming 650500, China
| | - Hongjuan Nian
- Biotechnology Research Center, Kunming University of Science and Technology, Kunming 650500, China.
| | - Limei Chen
- Biotechnology Research Center, Kunming University of Science and Technology, Kunming 650500, China
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46
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Wu M, Li Y, Chen D, Liu H, Zhu D, Xiang Y. Genome-wide identification and expression analysis of the IQD gene family in moso bamboo (Phyllostachys edulis). Sci Rep 2016; 6:24520. [PMID: 27094318 PMCID: PMC4837358 DOI: 10.1038/srep24520] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2015] [Accepted: 03/30/2016] [Indexed: 12/14/2022] Open
Abstract
Members of the plant-specific IQ67-domain (IQD) protein family are involved in various aspects of normal plant growth and developmental processes as well as basal defence response. Although hundreds of IQD proteins have been identified, only a small number of IQDs have been functionally characterized. Moreover, no systematic study has been performed on moso bamboo. In this study, we performed for the first time a genome-wide identification and expression analysis of the IQD gene family in moso bamboo. We identified 29 non-redundant PeIQD encoding genes. Analysis of the evolutionary patterns and divergence revealed that the IQD genes underwent a large-scale event around 12 million years ago and the division times of IQD family genes between moso bamboo and rice, and, between moso bamboo and Brachypodium, were found to be 20-35 MYA and 25-40 MYA, respectively. We surveyed the putative promoter regions of the PeIQD genes, which showed that largely stress-related cis-elements existed in these genes. The expression profiles of the IQD genes shed light on their functional divergence. Additionally, a yeast two-hybrid assay proved that PeIQD8 can interact with PeCaM2 and that IQ or I in the IQ motif is required for PeIQD8 to combine with CaM2.
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Affiliation(s)
- Min Wu
- Key Laboratory of Crop Biology of Anhui Province, School of Life Sciences, Anhui Agricultural University, Hefei 230036, China
- Laboratory of Modern Biotechnology, School of Forestry and Landscape Architecture, Anhui Agricultural University, Hefei 230036, China
| | - Yuan Li
- Laboratory of Modern Biotechnology, School of Forestry and Landscape Architecture, Anhui Agricultural University, Hefei 230036, China
| | - Danmei Chen
- Laboratory of Modern Biotechnology, School of Forestry and Landscape Architecture, Anhui Agricultural University, Hefei 230036, China
| | - Huanlong Liu
- Laboratory of Modern Biotechnology, School of Forestry and Landscape Architecture, Anhui Agricultural University, Hefei 230036, China
| | - Dongyue Zhu
- Laboratory of Modern Biotechnology, School of Forestry and Landscape Architecture, Anhui Agricultural University, Hefei 230036, China
| | - Yan Xiang
- Key Laboratory of Crop Biology of Anhui Province, School of Life Sciences, Anhui Agricultural University, Hefei 230036, China
- Laboratory of Modern Biotechnology, School of Forestry and Landscape Architecture, Anhui Agricultural University, Hefei 230036, China
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Lan T, You J, Kong L, Yu M, Liu M, Yang Z. The interaction of salicylic acid and Ca(2+) alleviates aluminum toxicity in soybean (Glycine max L.). PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2016; 98:146-54. [PMID: 26691059 DOI: 10.1016/j.plaphy.2015.11.019] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/21/2015] [Revised: 11/24/2015] [Accepted: 11/26/2015] [Indexed: 05/08/2023]
Abstract
Both calcium ion (Ca(2+)) and salicylic acid (SA) influence various stress responses in plants. In acidic soils, aluminum (Al) toxicity adversely affects crop yield. In this study, we determined the influences of Ca(2+) and SA on root elongation, Al accumulation, and citrate secretion in soybean plant. We also investigated the activity of antioxidative enzymes in Al-exposed soybean roots. Root elongation was severally inhibited when the roots were exposed to 30 μM Al. The Al-induced inhibition of root elongation was ameliorated by Ca(2+) and SA but aggravated by Ca(2+) channel inhibitor (VP), CaM antagonists (TFP), Ca(2+) chelator (EGTA), and SA biosynthesis inhibitor (PAC). Furthermore, 1.0 mM CaCl2 and 10 μM SA reduced the accumulation of Al in roots, but their inhibitors stimulated the accumulation of Al in roots. Citrate secretion from these roots increased with the addition of either 1.0 mM CaCl2 or 10 μM SA but did not increase significantly when treated with higher Ca(2+) concentration. Enzymatic analysis showed that Ca(2+) and SA stimulated the activities of superoxidase (SOD), peroxidase (POD), and ascorbate peroxidase (APX) in Al-treated roots. In addition, SA restored the inhibition of Ca(2+) inhibitors on root elongation and Al content. Thus, both Ca(2+) and SA contribute to Al tolerance in soybean. Furthermore, Ca(2+) supplements rapidly increased Al-induced accumulation of free-SA or conjugated SA (SAG), while Ca(2+) inhibitors delayed the accumulation of SA for more than 8 h. Within 4 h of treatment, SA increased cytosolic Ca(2+) concentration in Al-treated roots, and upregulated the expression of four genes that possibly encode calmodulin-like (CML) proteins. These findings indicate that SA is involved in Ca(2+)-mediated signal transduction pathways in Al tolerance.
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Affiliation(s)
- Tu Lan
- College of Plant Science, Jilin University, Changchun 130062, PR China; Laboratory of Soil and Plant Molecular Genetics, Jilin University, Changchun 130062, PR China
| | - Jiangfeng You
- College of Plant Science, Jilin University, Changchun 130062, PR China; Laboratory of Soil and Plant Molecular Genetics, Jilin University, Changchun 130062, PR China
| | - Lingnan Kong
- College of Plant Science, Jilin University, Changchun 130062, PR China; Laboratory of Soil and Plant Molecular Genetics, Jilin University, Changchun 130062, PR China
| | - Miao Yu
- College of Plant Science, Jilin University, Changchun 130062, PR China; Laboratory of Soil and Plant Molecular Genetics, Jilin University, Changchun 130062, PR China
| | - Minghui Liu
- College of Plant Science, Jilin University, Changchun 130062, PR China; Laboratory of Soil and Plant Molecular Genetics, Jilin University, Changchun 130062, PR China
| | - Zhenming Yang
- College of Plant Science, Jilin University, Changchun 130062, PR China; Laboratory of Soil and Plant Molecular Genetics, Jilin University, Changchun 130062, PR China.
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48
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Mazzucotelli E, Trono D. Cloning, expression analysis, and functional characterization of two secretory phospholipases A2 in durum wheat (Triticum durum Desf.). PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2015; 241:295-306. [PMID: 26706080 DOI: 10.1016/j.plantsci.2015.10.009] [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: 09/07/2015] [Revised: 10/16/2015] [Accepted: 10/17/2015] [Indexed: 06/05/2023]
Abstract
We previously isolated four cDNAs in durum wheat, TdsPLA2I, TdsPLA2II, TdsPLA2III and TdsPLA2IV, that encode proteins with homology to plant secretory phospholipases A2 (sPLA2s) (Verlotta et al., Int. J. Mol. Sci., 14, 2013, 5146-5169). In this study, we have further characterized TdsPLA2II and TdsPLA2III sequences that, on the basis of our previous findings, might encode sPLA2 isoforms with different features. Functional analysis revealed that, similarly to other known sPLA2s, TdsPLA2II and TdsPLA2III have an optimum at pH 9.0, require Ca(2+), are heat stable, and are inhibited by the disulfide-bond-reducing agent dithiothreitol. However, differences emerged between these TdsPLA2 isoforms. Transcript analysis revealed that the TdsPLA2III gene is highly up-regulated under different environmental stresses; conversely, the TdsPLA2II gene is expressed at constant levels under almost all of the stress conditions examined. Moreover, TdsPLA2II is saturated at micromolar substrate and Ca(2+) concentrations, whereas TdsPLA2III requires millimolar concentrations to reach maximal activity. This suggests that TdsPLA2II normally functions under optimal conditions in vivo, whereas TdsPLA2III is only partially activated, depending on the specific phospholipid and Ca(2+) levels. Altogether these data lead to the hypothesis that in vivo TdsPLA2II and TdsPLA2III are differently regulated at both molecular and biochemical level and that TdsPLA2III plays a major role in durum wheat response to adverse environmental conditions.
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MESH Headings
- Amino Acid Sequence
- Cloning, Molecular
- DNA, Complementary/genetics
- DNA, Complementary/metabolism
- DNA, Plant/genetics
- DNA, Plant/metabolism
- Gene Expression Regulation, Plant
- Molecular Sequence Data
- Phospholipases A2, Secretory/genetics
- Phospholipases A2, Secretory/metabolism
- Phylogeny
- Plant Proteins/genetics
- Plant Proteins/metabolism
- RNA, Plant/genetics
- RNA, Plant/metabolism
- Sequence Alignment
- Triticum/enzymology
- Triticum/genetics
- Triticum/metabolism
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Affiliation(s)
- Elisabetta Mazzucotelli
- Consiglio per la Ricerca in Agricoltura e l'Analisi dell'Economia Agraria, Centro di Ricerca per la Genomica Vegetale, Via San Protaso 302, 29017 Fiorenzuola d'Arda, Italy
| | - Daniela Trono
- Consiglio per la Ricerca in Agricoltura e l'Analisi dell'Economia Agraria, Centro di Ricerca per la Cerealicoltura, S.S. 673, Km 25,200, 71122 Foggia, Italy.
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49
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Chen C, Sun X, Duanmu H, Zhu D, Yu Y, Cao L, Liu A, Jia B, Xiao J, Zhu Y. GsCML27, a Gene Encoding a Calcium-Binding Ef-Hand Protein from Glycine soja, Plays Differential Roles in Plant Responses to Bicarbonate, Salt and Osmotic Stresses. PLoS One 2015; 10:e0141888. [PMID: 26550992 PMCID: PMC4638360 DOI: 10.1371/journal.pone.0141888] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2015] [Accepted: 10/14/2015] [Indexed: 01/29/2023] Open
Abstract
Calcium, as the most widely accepted messenger, plays an important role in plant stress responses through calcium-dependent signaling pathways. The calmodulin-like family genes (CMLs) encode Ca2+ sensors and function in signaling transduction in response to environmental stimuli. However, until now, the function of plant CML proteins, especially soybean CMLs, is largely unknown. Here, we isolated a Glycine soja CML protein GsCML27, with four conserved EF-hands domains, and identified it as a calcium-binding protein through far-UV CD spectroscopy. We further found that expression of GsCML27 was induced by bicarbonate, salt and osmotic stresses. Interestingly, ectopic expression of GsCML27 in Arabidopsis enhanced plant tolerance to bicarbonate stress, but decreased the salt and osmotic tolerance during the seed germination and early growth stages. Furthermore, we found that ectopic expression of GsCML27 decreases salt tolerance through modifying both the cellular ionic (Na+, K+) content and the osmotic stress regulation. GsCML27 ectopic expression also decreased the expression levels of osmotic stress-responsive genes. Moreover, we also showed that GsCML27 localized in the whole cell, including cytoplasm, plasma membrane and nucleus in Arabidopsis protoplasts and onion epidermal cells, and displayed high expression in roots and embryos. Together, these data present evidence that GsCML27 as a Ca2+-binding EF-hand protein plays a role in plant responses to bicarbonate, salt and osmotic stresses.
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Affiliation(s)
- Chao Chen
- Key Laboratory of Agricultural Biological Functional Genes, Northeast Agricultural University, Harbin, P.R. China
| | - Xiaoli Sun
- Agronomy College, Heilongjiang Bayi Agricultural University, Daqing, P.R. China
| | - Huizi Duanmu
- Key Laboratory of Agricultural Biological Functional Genes, Northeast Agricultural University, Harbin, P.R. China
| | - Dan Zhu
- College of Life Science, Qingdao Agricultural University, Qingdao, P.R. China
| | - Yang Yu
- Key Laboratory of Agricultural Biological Functional Genes, Northeast Agricultural University, Harbin, P.R. China
| | - Lei Cao
- Key Laboratory of Agricultural Biological Functional Genes, Northeast Agricultural University, Harbin, P.R. China
| | - Ailin Liu
- Key Laboratory of Agricultural Biological Functional Genes, Northeast Agricultural University, Harbin, P.R. China
| | - Bowei Jia
- Key Laboratory of Agricultural Biological Functional Genes, Northeast Agricultural University, Harbin, P.R. China
| | - Jialei Xiao
- Key Laboratory of Agricultural Biological Functional Genes, Northeast Agricultural University, Harbin, P.R. China
| | - Yanming Zhu
- Key Laboratory of Agricultural Biological Functional Genes, Northeast Agricultural University, Harbin, P.R. China
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Virdi AS, Singh S, Singh P. Abiotic stress responses in plants: roles of calmodulin-regulated proteins. FRONTIERS IN PLANT SCIENCE 2015; 6:809. [PMID: 26528296 PMCID: PMC4604306 DOI: 10.3389/fpls.2015.00809] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/01/2015] [Accepted: 09/16/2015] [Indexed: 05/20/2023]
Abstract
Intracellular changes in calcium ions (Ca(2+)) in response to different biotic and abiotic stimuli are detected by various sensor proteins in the plant cell. Calmodulin (CaM) is one of the most extensively studied Ca(2+)-sensing proteins and has been shown to be involved in transduction of Ca(2+) signals. After interacting with Ca(2+), CaM undergoes conformational change and influences the activities of a diverse range of CaM-binding proteins. A number of CaM-binding proteins have also been implicated in stress responses in plants, highlighting the central role played by CaM in adaptation to adverse environmental conditions. Stress adaptation in plants is a highly complex and multigenic response. Identification and characterization of CaM-modulated proteins in relation to different abiotic stresses could, therefore, prove to be essential for a deeper understanding of the molecular mechanisms involved in abiotic stress tolerance in plants. Various studies have revealed involvement of CaM in regulation of metal ions uptake, generation of reactive oxygen species and modulation of transcription factors such as CAMTA3, GTL1, and WRKY39. Activities of several kinases and phosphatases have also been shown to be modulated by CaM, thus providing further versatility to stress-associated signal transduction pathways. The results obtained from contemporary studies are consistent with the proposed role of CaM as an integrator of different stress signaling pathways, which allows plants to maintain homeostasis between different cellular processes. In this review, we have attempted to present the current state of understanding of the role of CaM in modulating different stress-regulated proteins and its implications in augmenting abiotic stress tolerance in plants.
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Affiliation(s)
- Amardeep S. Virdi
- Texture Analysis Laboratory, Department of Food Science & Technology, Guru Nanak Dev UniversityAmritsar, India
| | - Supreet Singh
- Plant Molecular Biology Laboratory, Department of Biotechnology, Guru Nanak Dev UniversityAmritsar, India
| | - Prabhjeet Singh
- Plant Molecular Biology Laboratory, Department of Biotechnology, Guru Nanak Dev UniversityAmritsar, India
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