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Sarkar S, Rhein HS, Pittman JK, Hirschi KD. A dominant-negative Arabidopsis cation exchanger 1 (CAX1): N-terminal autoinhibition and membrane topology. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2024. [PMID: 39175446 DOI: 10.1111/tpj.16966] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/17/2024] [Revised: 06/20/2024] [Accepted: 07/25/2024] [Indexed: 08/24/2024]
Abstract
Calcium (Ca2+) is essential for plant growth and cellular homeostasis, with cation exchangers (CAXs) regulating Ca2+ transport into plant vacuoles. In Arabidopsis, multiple CAXs feature a common structural arrangement, comprising an N-terminal autoinhibitory domain followed by two pseudosymmetrical modules. Mutations in CAX1 enhance stress tolerance, notably tolerance to anoxia (a condition marked by oxygen depletion), crucial for flood resilience. Here we engineered a dominant-negative CAX1 variant, named ½N-CAX1, incorporating the autoinhibitory domain and the N-terminal pseudosymmetrical module, which, when expressed in wild-type Arabidopsis plants, phenocopied the anoxia tolerance of cax1. Physiological evaluations, yeast assays, and calcium imaging demonstrated that wild-type plants expressing ½N-CAX1 have phenotypes consistent with inhibition of CAX1, which is likely through direct interaction of ½N-CAX1 with CAX1. Eliminating segments within the N-terminal pseudosymmetrical module, as well as incorporating modules from other plant CAXs and expressing these variants into wild-type plants, failed to produce anoxia tolerance. This underscores the requirement for both the CAX1 autoinhibitory domain and the intact pseudosymmetrical module to produce the dominant-negative phenotype. Our study elucidates the interaction of this ½N-CAX1 variant with CAX1 and its impact on anoxia tolerance, offering insights into further approaches for engineering plant stress tolerance.
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Affiliation(s)
- Shayan Sarkar
- Pediatrics Nutrition, Children's Nutrition Research, Baylor College of Medicine, Houston, Texas, 77030, USA
| | - Hormat Shadgou Rhein
- Pediatrics Nutrition, Children's Nutrition Research, Baylor College of Medicine, Houston, Texas, 77030, USA
| | - Jon K Pittman
- Faculty of Science and Engineering, School of Natural Sciences, The University of Manchester, Michael Smith Building, Oxford Road, Manchester, M13 9PT, UK
| | - Kendal D Hirschi
- Pediatrics Nutrition, Children's Nutrition Research, Baylor College of Medicine, Houston, Texas, 77030, USA
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2
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Pittman JK, Hirschi KD. CAX control: multiple roles of vacuolar cation/H + exchangers in metal tolerance, mineral nutrition and environmental signalling. PLANT BIOLOGY (STUTTGART, GERMANY) 2024. [PMID: 39030923 DOI: 10.1111/plb.13698] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/27/2024] [Accepted: 06/16/2024] [Indexed: 07/22/2024]
Abstract
Plant vacuolar transporters, particularly CAX (Cation/H+ Exchangers) responsible for Ca2+/H+ exchange on the vacuole tonoplast, play a central role in governing cellular pH, ion balance, nutrient storage, metal accumulation, and stress responses. Furthermore, CAX variants have been employed to enhance the calcium content of crops, contributing to biofortification efforts. Recent research has uncovered the broader significance of these transporters in plant signal transduction and element partitioning. The use of genetically encoded Ca2+ sensors has begun to highlight the crucial role of CAX isoforms in generating cytosolic Ca2+ signals, underscoring their function as pivotal hubs in diverse environmental and developmental signalling networks. Interestingly, it has been observed that the loss of CAX function can be advantageous in specific stress conditions, both for biotic and abiotic stressors. Determining the optimal timing and approach for modulating the expression of CAX is a critical concern. In the future, strategically manipulating the temporal loss of CAX function in agriculturally important crops holds promise to bolster plant immunity, enhance cold tolerance, and fortify resilience against one of agriculture's most significant challenges, namely flooding.
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Affiliation(s)
- J K Pittman
- Department of Earth and Environmental Sciences, School of Natural Sciences, The University of Manchester, Manchester, UK
| | - K D Hirschi
- Children's Nutrition Research, Baylor College of Medicine, Houston, TX, USA
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3
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Wang C, Tang RJ, Kou S, Xu X, Lu Y, Rauscher K, Voelker A, Luan S. Mechanisms of calcium homeostasis orchestrate plant growth and immunity. Nature 2024; 627:382-388. [PMID: 38418878 DOI: 10.1038/s41586-024-07100-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2023] [Accepted: 01/22/2024] [Indexed: 03/02/2024]
Abstract
Calcium (Ca2+) is an essential nutrient for plants and a cellular signal, but excessive levels can be toxic and inhibit growth1,2. To thrive in dynamic environments, plants must monitor and maintain cytosolic Ca2+ homeostasis by regulating numerous Ca2+ transporters3. Here we report two signalling pathways in Arabidopsis thaliana that converge on the activation of vacuolar Ca2+/H+ exchangers (CAXs) to scavenge excess cytosolic Ca2+ in plants. One mechanism, activated in response to an elevated external Ca2+ level, entails calcineurin B-like (CBL) Ca2+ sensors and CBL-interacting protein kinases (CIPKs), which activate CAXs by phosphorylating a serine (S) cluster in the auto-inhibitory domain. The second pathway, triggered by molecular patterns associated with microorganisms, engages the immune receptor complex FLS2-BAK1 and the associated cytoplasmic kinases BIK1 and PBL1, which phosphorylate the same S-cluster in CAXs to modulate Ca2+ signals in immunity. These Ca2+-dependent (CBL-CIPK) and Ca2+-independent (FLS2-BAK1-BIK1/PBL1) mechanisms combine to balance plant growth and immunity by regulating cytosolic Ca2+ homeostasis.
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Affiliation(s)
- Chao Wang
- Department of Plant and Microbial Biology, University of California, Berkeley, Berkeley, CA, USA
| | - Ren-Jie Tang
- Department of Plant and Microbial Biology, University of California, Berkeley, Berkeley, CA, USA
| | - Senhao Kou
- Department of Plant and Microbial Biology, University of California, Berkeley, Berkeley, CA, USA
| | - Xiaoshu Xu
- Department of Bioengineering, Stanford University, Stanford, CA, USA
| | - Yi Lu
- Department of Molecular and Cell Biology, University of California, Berkeley, Berkeley, CA, USA
| | - Kenda Rauscher
- Department of Plant and Microbial Biology, University of California, Berkeley, Berkeley, CA, USA
| | - Angela Voelker
- Department of Plant and Microbial Biology, University of California, Berkeley, Berkeley, CA, USA
| | - Sheng Luan
- Department of Plant and Microbial Biology, University of California, Berkeley, Berkeley, CA, USA.
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4
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Wang C, Luan S. Calcium homeostasis and signaling in plant immunity. CURRENT OPINION IN PLANT BIOLOGY 2024; 77:102485. [PMID: 38043138 DOI: 10.1016/j.pbi.2023.102485] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/06/2023] [Revised: 10/27/2023] [Accepted: 10/30/2023] [Indexed: 12/05/2023]
Abstract
Calcium (Ca2+) signaling consists of three steps: (1) initiation of a change in cellular Ca2+ concentration in response to a stimulus, (2) recognition of the change through direct binding of Ca2+ by its sensors, (3) transduction of the signal to elicit downstream responses. Recent studies have uncovered a central role for Ca2+ signaling in both layers of immune responses initiated by plasma membrane (PM) and intracellular receptors, respectively. These advances in our understanding are attributed to several lines of research, including invention of genetically-encoded Ca2+ reporters for the recording of intracellular Ca2+ signals, identification of Ca2+ channels and their gating mechanisms, and functional analysis of Ca2+ binding proteins (Ca2+ sensors). This review analyzes the recent literature that illustrates the importance of Ca2+ homeostasis and signaling in plant innate immunity, featuring intricate Ca2+dependent positive and negative regulations.
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Affiliation(s)
- Chao Wang
- Department of Plant and Microbial Biology, University of California, Berkeley, CA 94720, USA
| | - Sheng Luan
- Department of Plant and Microbial Biology, University of California, Berkeley, CA 94720, USA.
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Mathew IE, Rhein HS, Yang J, Gradogna A, Carpaneto A, Guo Q, Tappero R, Scholz-Starke J, Barkla BJ, Hirschi KD, Punshon T. Sequential removal of cation/H + exchangers reveals their additive role in elemental distribution, calcium depletion and anoxia tolerance. PLANT, CELL & ENVIRONMENT 2024; 47:557-573. [PMID: 37916653 DOI: 10.1111/pce.14756] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2023] [Revised: 09/21/2023] [Accepted: 10/18/2023] [Indexed: 11/03/2023]
Abstract
Multiple Arabidopsis H+ /Cation exchangers (CAXs) participate in high-capacity transport into the vacuole. Previous studies have analysed single and double mutants that marginally reduced transport; however, assessing phenotypes caused by transport loss has proven enigmatic. Here, we generated quadruple mutants (cax1-4: qKO) that exhibited growth inhibition, an 85% reduction in tonoplast-localised H+ /Ca transport, and enhanced tolerance to anoxic conditions compared to CAX1 mutants. Leveraging inductively coupled plasma mass spectrometry (ICP-MS) and synchrotron X-ray fluorescence (SXRF), we demonstrate CAX transporters work together to regulate leaf elemental content: ICP-MS analysis showed that the elemental concentrations in leaves strongly correlated with the number of CAX mutations; SXRF imaging showed changes in element partitioning not present in single CAX mutants and qKO had a 40% reduction in calcium (Ca) abundance. Reduced endogenous Ca may promote anoxia tolerance; wild-type plants grown in Ca-limited conditions were anoxia tolerant. Sequential reduction of CAXs increased mRNA expression and protein abundance changes associated with reactive oxygen species and stress signalling pathways. Multiple CAXs participate in postanoxia recovery as their concerted removal heightened changes in postanoxia Ca signalling. This work showcases the integrated and diverse function of H+ /Cation transporters and demonstrates the ability to improve anoxia tolerance through diminishing endogenous Ca levels.
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Affiliation(s)
- Iny Elizebeth Mathew
- Pediatrics-Nutrition, Children's Nutrition Research, Baylor College of Medicine, Houston, Texas, USA
| | - Hormat Shadgou Rhein
- Pediatrics-Nutrition, Children's Nutrition Research, Baylor College of Medicine, Houston, Texas, USA
| | - Jian Yang
- Pediatrics-Nutrition, Children's Nutrition Research, Baylor College of Medicine, Houston, Texas, USA
| | - Antonella Gradogna
- Institute of Biophysics, Consiglio Nazionale delle Ricerche, Genova, Italy
| | - Armando Carpaneto
- Institute of Biophysics, Consiglio Nazionale delle Ricerche, Genova, Italy
- Department of Earth, Environment and Life Sciences (DISTAV), University of Genoa, Genova, Italy
| | - Qi Guo
- Faculty of Science and Engineering, Southern Cross University, Lismore, New South Wales, Australia
| | - Ryan Tappero
- Brookhaven National Laboratory, Photon Sciences Department, Upton, New York, USA
| | | | - Bronwyn J Barkla
- Faculty of Science and Engineering, Southern Cross University, Lismore, New South Wales, Australia
| | - Kendal D Hirschi
- Pediatrics-Nutrition, Children's Nutrition Research, Baylor College of Medicine, Houston, Texas, USA
| | - Tracy Punshon
- Department of Biological Sciences, Dartmouth College, Hanover, New Hampshire, USA
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Mei C, Yan P, Feng B, Mamat A, Wang J. The apple Ca 2+/H + exchanger MdCAX2L-2 functions positively in modulation of Ba 2+ tolerance. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2024; 207:108314. [PMID: 38184884 DOI: 10.1016/j.plaphy.2023.108314] [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: 09/15/2023] [Revised: 12/21/2023] [Accepted: 12/23/2023] [Indexed: 01/09/2024]
Abstract
Calcium is an essential element for plant growth and development, and it plays an important role in the responses of plants to abiotic stress. High concentrations of heavy metal ions in soil significantly affect the yield and quality of crops and pose human health threats when these ions accumulate in edible organs. The Ca2+/H+ exchanger (CAX) family is a class of transporters that mediate the transmembrane transport of both Ca2+ and metal ions, and they are widely involved in regulating plant growth and development and stress responses. Here, we cloned an AtCAX2 ortholog, MdCAX2L-2, from apple. It is constitutively expressed in various apple tissues and significantly induced by Ca2+ and Ba2+ treatments. The MdCAX2L-2 protein is located in the vacuolar membrane in both plant and yeast cells. Overexpression of MdCAX2L-2 enhanced the tolerance of the yeast mutant K667 to high concentrations of Ca2+ and Ba2+. In addition, the role of MdCAX2L-2 in modulating Ba2+ tolerance was identified using MdCAX2L-2-overexpressing transgenic Arabidopsis plants and apple calli. Comparison of growth phenotypes and stress-related physiological indexes under BaCl2 treatment indicated that MdCAX2L-2 could enhance the Ba2+ tolerance of plants by promoting Ba2+ compartmentalization into the vacuoles and eliminating excess ROS. Our results provide insights that will aid future studies examining the function of CAX proteins in regulating stress tolerance in fruit crops, as well as their underlying mechanisms.
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Affiliation(s)
- Chuang Mei
- The State Key Laboratory of Genetic Improvement and Germplasm Innovation of Crop Resistance in Arid Desert Regions (Preparation), Key Laboratory of Genome Research and Genetic Improvement of Xinjiang Characteristic Fruits and Vegetables, Institute of Horticultural Crops, Xinjiang Academy of Agricultural Sciences, Urumqi, China
| | - Peng Yan
- The State Key Laboratory of Genetic Improvement and Germplasm Innovation of Crop Resistance in Arid Desert Regions (Preparation), Key Laboratory of Genome Research and Genetic Improvement of Xinjiang Characteristic Fruits and Vegetables, Institute of Horticultural Crops, Xinjiang Academy of Agricultural Sciences, Urumqi, China
| | - Beibei Feng
- The State Key Laboratory of Genetic Improvement and Germplasm Innovation of Crop Resistance in Arid Desert Regions (Preparation), Key Laboratory of Genome Research and Genetic Improvement of Xinjiang Characteristic Fruits and Vegetables, Institute of Horticultural Crops, Xinjiang Academy of Agricultural Sciences, Urumqi, China
| | - Aisajan Mamat
- The State Key Laboratory of Genetic Improvement and Germplasm Innovation of Crop Resistance in Arid Desert Regions (Preparation), Key Laboratory of Genome Research and Genetic Improvement of Xinjiang Characteristic Fruits and Vegetables, Institute of Horticultural Crops, Xinjiang Academy of Agricultural Sciences, Urumqi, China
| | - Jixun Wang
- The State Key Laboratory of Genetic Improvement and Germplasm Innovation of Crop Resistance in Arid Desert Regions (Preparation), Key Laboratory of Genome Research and Genetic Improvement of Xinjiang Characteristic Fruits and Vegetables, Institute of Horticultural Crops, Xinjiang Academy of Agricultural Sciences, Urumqi, China.
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7
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Ren H, Zhang Y, Zhong M, Hussian J, Tang Y, Liu S, Qi G. Calcium signaling-mediated transcriptional reprogramming during abiotic stress response in plants. TAG. THEORETICAL AND APPLIED GENETICS. THEORETISCHE UND ANGEWANDTE GENETIK 2023; 136:210. [PMID: 37728763 DOI: 10.1007/s00122-023-04455-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/01/2023] [Accepted: 08/28/2023] [Indexed: 09/21/2023]
Abstract
Calcium (Ca2+) is a second messenger in plants growth and development, as well as in stress responses. The transient elevation in cytosolic Ca2+ concentration have been reported to be involved in plants response to abiotic and biotic stresses. In plants, Ca2+-induced transcriptional changes trigger molecular mechanisms by which plants adapt and respond to environment stresses. The mechanism for transcription regulation by Ca2+ could be either rapid in which Ca2+ signals directly cause the related response through the gene transcript and protein activities, or involved amplification of Ca2+ signals by up-regulation the expression of Ca2+ responsive genes, and then increase the transmission of Ca2+ signals. Ca2+ regulates the expression of genes by directly binding to the transcription factors (TFs), or indirectly through its sensors like calmodulin, calcium-dependent protein kinases (CDPK) and calcineurin B-like protein (CBL). In recent years, significant progress has been made in understanding the role of Ca2+-mediated transcriptional regulation in different processes in plants. In this review, we have provided a comprehensive overview of Ca2+-mediated transcriptional regulation in plants in response to abiotic stresses including nutrition deficiency, temperature stresses (like heat and cold), dehydration stress, osmotic stress, hypoxic, salt stress, acid rain, and heavy metal stress.
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Affiliation(s)
- Huimin Ren
- State Key Laboratory of Subtropical Silviculture, Zhejiang A & F University, Hangzhou, 311300, Zhejiang, China
| | - Yuting Zhang
- State Key Laboratory of Subtropical Silviculture, Zhejiang A & F University, Hangzhou, 311300, Zhejiang, China
| | - Minyi Zhong
- State Key Laboratory of Subtropical Silviculture, Zhejiang A & F University, Hangzhou, 311300, Zhejiang, China
| | - Jamshaid Hussian
- Department of Biotechnology, COMSATS University Islamabad, Abbottabad Campus, University Road, Abbottabad, 22060, Pakistan
| | - Yuting Tang
- State Key Laboratory of Subtropical Silviculture, Zhejiang A & F University, Hangzhou, 311300, Zhejiang, China
| | - Shenkui Liu
- State Key Laboratory of Subtropical Silviculture, Zhejiang A & F University, Hangzhou, 311300, Zhejiang, China.
| | - Guoning Qi
- State Key Laboratory of Subtropical Silviculture, Zhejiang A & F University, Hangzhou, 311300, Zhejiang, China.
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8
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Barnes AC, Myers JL, Surber SM, Liang Z, Mower JP, Schnable JC, Roston RL. Oligogalactolipid production during cold challenge is conserved in early diverging lineages. JOURNAL OF EXPERIMENTAL BOTANY 2023; 74:5405-5417. [PMID: 37357909 PMCID: PMC10848234 DOI: 10.1093/jxb/erad241] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Accepted: 06/23/2023] [Indexed: 06/27/2023]
Abstract
Severe cold, defined as a damaging cold beyond acclimation temperatures, has unique responses, but the signaling and evolution of these responses are not well understood. Production of oligogalactolipids, which is triggered by cytosolic acidification in Arabidopsis (Arabidopsis thaliana), contributes to survival in severe cold. Here, we investigated oligogalactolipid production in species from bryophytes to angiosperms. Production of oligogalactolipids differed within each clade, suggesting multiple evolutionary origins of severe cold tolerance. We also observed greater oligogalactolipid production in control samples than in temperature-challenged samples of some species. Further examination of representative species revealed a tight association between temperature, damage, and oligogalactolipid production that scaled with the cold tolerance of each species. Based on oligogalactolipid production and transcript changes, multiple angiosperm species share a signal of oligogalactolipid production initially described in Arabidopsis, namely cytosolic acidification. Together, these data suggest that oligogalactolipid production is a severe cold response that originated from an ancestral damage response that remains in many land plant lineages and that cytosolic acidification may be a common signaling mechanism for its activation.
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Affiliation(s)
- Allison C Barnes
- Department of Biochemistry, University of Nebraska-Lincoln, Lincoln, NE, USA
| | - Jennifer L Myers
- Department of Biochemistry, University of Nebraska-Lincoln, Lincoln, NE, USA
- Department of Horticulture, North Carolina State University, Raleigh, NC, USA
| | - Samantha M Surber
- Department of Biochemistry, University of Nebraska-Lincoln, Lincoln, NE, USA
| | - Zhikai Liang
- Department of Agronomy and Horticulture, University of Nebraska-Lincoln, Lincoln, NE, USA
| | - Jeffrey P Mower
- Department of Agronomy and Horticulture, University of Nebraska-Lincoln, Lincoln, NE, USA
| | - James C Schnable
- Department of Agronomy and Horticulture, University of Nebraska-Lincoln, Lincoln, NE, USA
| | - Rebecca L Roston
- Department of Biochemistry, University of Nebraska-Lincoln, Lincoln, NE, USA
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9
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López D, Larama G, Sáez PL, Bravo LA. Transcriptome Analysis of Diurnal and Nocturnal-Warmed Plants, the Molecular Mechanism Underlying Cold Deacclimation Response in Deschampsia antarctica. Int J Mol Sci 2023; 24:11211. [PMID: 37446390 DOI: 10.3390/ijms241311211] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2023] [Revised: 05/05/2023] [Accepted: 05/07/2023] [Indexed: 07/15/2023] Open
Abstract
Warming in the Antarctic Peninsula is one of the fastest on earth, and is predicted to become more asymmetric in the near future. Warming has already favored the growth and reproduction of Antarctic plant species, leading to a decrease in their freezing tolerance (deacclimation). Evidence regarding the effects of diurnal and nocturnal warming on freezing tolerance-related gene expression in D. antarctica is negligible. We hypothesized that freezing tolerance-related gene (such as CBF-regulon) expression is reduced mainly by nocturnal warming rather than diurnal temperature changes in D. antarctica. The present work aimed to determine the effects of diurnal and nocturnal warming on cold deacclimation and its associated gene expression in D. antarctica, under laboratory conditions. Fully cold-acclimated plants (8 °C/0 °C), with 16h/8h thermoperiod and photoperiod duration, were assigned to four treatments for 14 days: one control (8 °C/0 °C) and three with different warming conditions (diurnal (14 °C/0 °C), nocturnal (8 °C/6 °C), and diurnal-nocturnal (14 °C/6 °C). RNA-seq was performed and differential gene expression was analyzed. Nocturnal warming significantly down-regulated the CBF transcription factors expression and associated cold stress response genes and up-regulated photosynthetic and growth promotion genes. Consequently, nocturnal warming has a greater effect than diurnal warming on the cold deacclimation process in D. antarctica. The eco-physiological implications are discussed.
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Affiliation(s)
- Dariel López
- Departamento de Ciencias Agronómicas y Recursos Naturales, Facultad de Ciencias Agropecuarias y Medioambiente and Center of Plant, Soil Interactions and Natural Resources Biotechnology, Scientific and Technological Bioresource Nucleus, Universidad de La Frontera, Temuco 4811230, Chile
| | - Giovanni Larama
- Biocontrol Research Laboratory and Scientific and Technological Bioresource Nucleus, Universidad de La Frontera, Temuco 4811230, Chile
| | - Patricia L Sáez
- Departamento de Ciencias Agronómicas y Recursos Naturales, Facultad de Ciencias Agropecuarias y Medioambiente and Center of Plant, Soil Interactions and Natural Resources Biotechnology, Scientific and Technological Bioresource Nucleus, Universidad de La Frontera, Temuco 4811230, Chile
| | - León A Bravo
- Departamento de Ciencias Agronómicas y Recursos Naturales, Facultad de Ciencias Agropecuarias y Medioambiente and Center of Plant, Soil Interactions and Natural Resources Biotechnology, Scientific and Technological Bioresource Nucleus, Universidad de La Frontera, Temuco 4811230, Chile
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10
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Yang C, Li X, Zhang Y, Jin H. Transcriptome analysis of Populus × canadensis 'Zhongliao1' in response to low temperature stress. BMC Genomics 2023; 24:77. [PMID: 36803355 PMCID: PMC9936654 DOI: 10.1186/s12864-023-09187-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Accepted: 02/14/2023] [Indexed: 02/19/2023] Open
Abstract
BACKGROUND Low temperatures are known to limit the growth and geographical distribution of poplars. Although some transcriptomic studies have been conducted to explore the response of poplar leaves to cold stress, only a few have comprehensively analyzed the effects of low temperature on the transcriptome of poplars and identified genes related to cold stress response and repair of freeze-thaw injury. RESULTS We exposed the Euramerican poplar Zhongliao1 to low temperatures; after stems were exposed to - 40℃, 4℃, and 20℃, the mixture of phloem and cambium was collected for transcriptome sequencing and bioinformatics analysis. A total of 29,060 genes were detected, including 28,739 known genes and 321 novel genes. Several differentially expressed genes (n = 36) were found to be involved in the Ca2+ signaling pathway, starch-sucrose metabolism pathway, abscisic acid signaling pathway, and DNA repair. They were functionally annotated; glucan endo-1,3-beta-glucosidase and UDP-glucuronosyltransferase genes, for instance, showed a close relationship with cold resistance. The expression of 11 differentially expressed genes was verified by qRT-PCR; RNA-Seq and qRT-PCR data were found to be consistent, which validated the robustness of our RNA-Seq findings. Finally, multiple sequence alignment and evolutionary analysis were performed, the results of which suggested a close association between several novel genes and cold resistance in Zhongliao1. CONCLUSION We believe that the cold resistance and freeze-thaw injury repair genes identified in this study are of great significance for cold tolerance breeding.
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Affiliation(s)
- Chengchao Yang
- Liaoning Provincial Institute of Poplar, 115213, Gaizhou, China.
| | - Xiaoyu Li
- Liaoning Provincial Institute of Poplar, 115213 Gaizhou, China
| | - Yan Zhang
- Liaoning Provincial Institute of Poplar, 115213 Gaizhou, China
| | - Hua Jin
- grid.440687.90000 0000 9927 2735College of Environment and Bioresources, Dalian Minzu University, 116600 Dalian, China
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11
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Mathew IE, Rhein HS, Green AJ, Hirschi KD. Generating Reproducing Anoxia Conditions for Plant Phenotyping. Bio Protoc 2023; 13:e4603. [PMID: 36816988 PMCID: PMC9909309 DOI: 10.21769/bioprotoc.4603] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Revised: 11/02/2022] [Accepted: 01/10/2023] [Indexed: 02/04/2023] Open
Abstract
Based on the availability of oxygen, plant growth environment can be normoxic (normal environment), hypoxic (reduced oxygen, <21%), or anoxic (complete depletion of oxygen). Hypoxic/anoxic environment is created when a plant is exposed to stresses such as submergence, flooding, or pathogen attack. Survival of the plants following stress conditions is in part dependent on their ability to overcome the stress induced by anoxia/hypoxia conditions. This shows the need for the development of strategies for understanding the mechanisms involved in plant tolerance to anoxia. Previous studies have employed different methods for establishing an anerobic environment. Here, we describe a simple method for creating anoxic environment using an anaerobic atmosphere generation bag. Anoxic conditions can be maintained in a cylindrical jar, a rectangular box, or a vacuum sealer bag, enabling the screening of a large number of samples. This protocol is particularly useful to screen plant mutants that are tolerant to anoxia. The method is simple, easy, cost-efficient, reproducible, and does not require any sophisticated instruments. Graphic abstract.
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Affiliation(s)
- Iny E. Mathew
- Pediatrics-Nutrition, Children’s Nutrition Research, Baylor College of Medicine, Houston, TX, 77030, USA
| | - Hormat Shadgou Rhein
- Pediatrics-Nutrition, Children’s Nutrition Research, Baylor College of Medicine, Houston, TX, 77030, USA
| | - Ardawna J. Green
- Pediatrics-Nutrition, Children’s Nutrition Research, Baylor College of Medicine, Houston, TX, 77030, USA
| | - Kendal D. Hirschi
- Pediatrics-Nutrition, Children’s Nutrition Research, Baylor College of Medicine, Houston, TX, 77030, USA,*For correspondence:
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12
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Yang J, Guo X, Mei Q, Qiu L, Chen P, Li W, Mao K, Ma F. MdbHLH4 negatively regulates apple cold tolerance by inhibiting MdCBF1/3 expression and promoting MdCAX3L-2 expression. PLANT PHYSIOLOGY 2023; 191:789-806. [PMID: 36331333 PMCID: PMC9806570 DOI: 10.1093/plphys/kiac512] [Citation(s) in RCA: 13] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/05/2022] [Accepted: 10/19/2022] [Indexed: 06/16/2023]
Abstract
Low temperature affects the yield and quality of crops. Inducer of CBF expression 1 (ICE1) plays a positive role in plant cold tolerance by promoting the expression of CRT binding factor (CBF) and cold-responsive (COR) genes. Several ICE1-interacting transcription factors (TFs) that regulate plant cold tolerance have been identified. However, how these TFs affect the function of ICE1 and CBF expression under cold conditions remains unclear. Here, we identified the MYC-type TF MdbHLH4, a negative regulator of cold tolerance in Arabidopsis (Arabidopsis thaliana) and apple (Malus domestica) plants. Under cold conditions, MdbHLH4 inhibits the expression of MdCBF1 and MdCBF3 by directly binding to their promoters. It also interacts with MdICE1L, a homolog of AtICE1 in apple, and inhibits the binding of MdICE1L to the promoters of MdCBF1/3 and thus their expression. We showed that MdCAX3L-2, a Ca2+/H+ exchanger (CAX) family gene that negatively regulates plant cold tolerance, is also a direct target of MdbHLH4. MdbHLH4 reduced apple cold tolerance by promoting MdCAX3L-2 expression. Moreover, overexpression of either MdCAX3L-2 or MdbHLH4 promoted the cold-induced ubiquitination and degradation of MdICE1L. Overall, our results reveal that MdbHLH4 negatively regulates plant cold tolerance by inhibiting MdCBF1/3 expression and MdICE1L promoter-binding activity, as well as by promoting MdCAX3L-2 expression and cold-induced MdICE1L degradation. These findings provide insights into the mechanisms by which ICE1-interacting TFs regulate CBF expression and ICE1 function and thus plant cold tolerance.
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Affiliation(s)
- Jie Yang
- State Key Laboratory of Crop Stress Biology for Arid Areas/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A&F University, Yangling 712100, China
| | - Xin Guo
- State Key Laboratory of Crop Stress Biology for Arid Areas/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A&F University, Yangling 712100, China
| | - Quanlin Mei
- State Key Laboratory of Crop Stress Biology for Arid Areas/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A&F University, Yangling 712100, China
| | - Lina Qiu
- State Key Laboratory of Crop Stress Biology for Arid Areas/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A&F University, Yangling 712100, China
| | - Peihong Chen
- State Key Laboratory of Crop Stress Biology for Arid Areas/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A&F University, Yangling 712100, China
| | - Weihan Li
- State Key Laboratory of Crop Stress Biology for Arid Areas/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A&F University, Yangling 712100, China
| | - Ke Mao
- State Key Laboratory of Crop Stress Biology for Arid Areas/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A&F University, Yangling 712100, China
| | - Fengwang Ma
- State Key Laboratory of Crop Stress Biology for Arid Areas/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A&F University, Yangling 712100, China
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13
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Zaman S, Hassan SSU, Ding Z. The Role of Calmodulin Binding Transcription Activator in Plants under Different Stressors: Physiological, Biochemical, Molecular Mechanisms of Camellia sinensis and Its Current Progress of CAMTAs. Bioengineering (Basel) 2022; 9:759. [PMID: 36550965 PMCID: PMC9774361 DOI: 10.3390/bioengineering9120759] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2022] [Revised: 11/28/2022] [Accepted: 12/01/2022] [Indexed: 12/12/2022] Open
Abstract
Low temperatures have a negative effect on plant development. Plants that are exposed to cold temperatures undergo a cascade of physiological, biochemical, and molecular changes that activate several genes, transcription factors, and regulatory pathways. In this review, the physiological, biochemical, and molecular mechanisms of Camellia sinensis have been discussed. Calmodulin binding transcription activator (CAMTAs) by molecular means including transcription is one of the novel genes for plants' adaptation to different abiotic stresses, including low temperatures. Therefore, the role of CAMTAs in different plants has been discussed. The number of CAMTAs genes discussed here are playing a significant role in plants' adaptation to abiotic stress. The illustrated diagrams representing the mode of action of calcium (Ca2+) with CAMTAs have also been discussed. In short, Ca2+ channels or Ca2+ pumps trigger and induce the Ca2+ signatures in plant cells during abiotic stressors, including low temperatures. Ca2+ signatures act with CAMTAs in plant cells and are ultimately decoded by Ca2+sensors. To the best of our knowledge, this is the first review reporting CAMAT's current progress and potential role in C. sinensis, and this study opens a new road for researchers adapting tea plants to abiotic stress.
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Affiliation(s)
- Shah Zaman
- Tea Research Institute, Shandong Academy of Agricultural Sciences, Jinan 250100, China
| | - Syed Shams Ul Hassan
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, School of Pharmacy, Shanghai Jiao Tong University, Shanghai 200240, China
- Department of Natural Product Chemistry, School of Pharmacy, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Zhaotang Ding
- Tea Research Institute, Shandong Academy of Agricultural Sciences, Jinan 250100, China
- Tea Research Institute, Qingdao Agricultural University, Qingdao 266109, China
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14
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Yang J, Mathew IE, Rhein H, Barker R, Guo Q, Brunello L, Loreti E, Barkla BJ, Gilroy S, Perata P, Hirschi KD. The vacuolar H+/Ca transporter CAX1 participates in submergence and anoxia stress responses. PLANT PHYSIOLOGY 2022; 190:2617-2636. [PMID: 35972350 PMCID: PMC9706465 DOI: 10.1093/plphys/kiac375] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Accepted: 07/17/2022] [Indexed: 05/04/2023]
Abstract
A plant's oxygen supply can vary from normal (normoxia) to total depletion (anoxia). Tolerance to anoxia is relevant to wetland species, rice (Oryza sativa) cultivation, and submergence tolerance of crops. Decoding and transmitting calcium (Ca) signals may be an important component to anoxia tolerance; however, the contribution of intracellular Ca transporters to this process is poorly understood. Four functional cation/proton exchangers (CAX1-4) in Arabidopsis (Arabidopsis thaliana) help regulate Ca homeostasis around the vacuole. Our results demonstrate that cax1 mutants are more tolerant to both anoxic conditions and submergence. Using phenotypic measurements, RNA-sequencing, and proteomic approaches, we identified cax1-mediated anoxia changes that phenocopy changes present in anoxia-tolerant crops: altered metabolic processes, diminished reactive oxygen species production post anoxia, and altered hormone signaling. Comparing wild-type and cax1 expressing genetically encoded Ca indicators demonstrated altered cytosolic Ca signals in cax1 during reoxygenation. Anoxia-induced Ca signals around the plant vacuole are involved in the control of numerous signaling events related to adaptation to low oxygen stress. This work suggests that cax1 anoxia response pathway could be engineered to circumvent the adverse effects of flooding that impair production agriculture.
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Affiliation(s)
- Jian Yang
- Pediatrics-Nutrition, Children’s Nutrition Research, Baylor College of Medicine, Houston, Texas 77030, USA
| | - Iny Elizebeth Mathew
- Pediatrics-Nutrition, Children’s Nutrition Research, Baylor College of Medicine, Houston, Texas 77030, USA
| | - Hormat Rhein
- Pediatrics-Nutrition, Children’s Nutrition Research, Baylor College of Medicine, Houston, Texas 77030, USA
| | - Richard Barker
- Department of Botany, Birge Hall, University of Wisconsin, Wisconsin, USA
| | - Qi Guo
- Southern Cross Plant Science, Southern Cross University, Lismore, New South Wales, Australia
| | - Luca Brunello
- Plant Lab, Institute of Life Sciences, Scuola Superiore Sant'Anna, San Giuliano Terme, Pisa, Italy
| | - Elena Loreti
- Institute of Agricultural Biology and Biotechnology, National Research Council, 56124 Pisa, Italy
| | - Bronwyn J Barkla
- Southern Cross Plant Science, Southern Cross University, Lismore, New South Wales, Australia
| | - Simon Gilroy
- Department of Botany, Birge Hall, University of Wisconsin, Wisconsin, USA
| | - Pierdomenico Perata
- Plant Lab, Institute of Life Sciences, Scuola Superiore Sant'Anna, San Giuliano Terme, Pisa, Italy
| | - Kendal D Hirschi
- Pediatrics-Nutrition, Children’s Nutrition Research, Baylor College of Medicine, Houston, Texas 77030, USA
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15
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Megha S, Wang Z, Kav NNV, Rahman H. Genome-wide identification of biotin carboxyl carrier subunits of acetyl-CoA carboxylase in Brassica and their role in stress tolerance in oilseed Brassica napus. BMC Genomics 2022; 23:707. [PMID: 36253756 PMCID: PMC9578262 DOI: 10.1186/s12864-022-08920-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2022] [Accepted: 09/23/2022] [Indexed: 11/22/2022] Open
Abstract
Background Biotin carboxyl carrier protein (BCCP) is a subunit of Acetyl CoA-carboxylase (ACCase) which catalyzes the conversion of acetyl-CoA to malonyl-CoA in a committed step during the de novo biosynthesis of fatty acids. Lipids, lipid metabolites, lipid-metabolizing and -modifying enzymes are known to play a role in biotic and abiotic stress tolerance in plants. In this regard, an understanding of the Brassica napus BCCP genes will aid in the improvement of biotic and abiotic stress tolerance in canola. Results In this study, we identified 43 BCCP genes in five Brassica species based on published genome data. Among them, Brassica rapa, Brassica oleracea, Brassica nigra, Brassica napus and Brassica juncea had six, seven, seven, 10 and 13 BCCP homologs, respectively. Phylogenetic analysis categorized them into five classes, each with unique conserved domains. The promoter regions of all BCCP genes contained stress-related cis-acting elements as determined by cis-element analysis. We identified four and three duplicated gene pairs (segmental) in B. napus and B. juncea respectively, indicating the role of segmental duplication in the expansion of this gene family. The Ka/Ks ratios of orthologous gene pairs between Arabidopsis thaliana and five Brassica species were mostly less than 1.0, implying that purifying selection, i.e., selective removal of deleterious alleles, played a role during the evolution of Brassica genomes. Analysis of 10 BnaBCCP genes using qRT-PCR showed a different pattern of expression because of exposure of the plants to biotic stresses, such as clubroot and sclerotinia diseases, and abiotic stresses such as drought, low temperature and salinity stresses. Conclusions The identification and functional analysis of the Brassica BCCPs demonstrated that some of these genes might play important roles in biotic and abiotic stress responses. Results from this study could lay the foundation for a better understanding of these genes for the improvement of Brassica crops for stress tolerance. Supplementary Information The online version contains supplementary material available at 10.1186/s12864-022-08920-y.
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Affiliation(s)
- Swati Megha
- Department of Agricultural Food and Nutritional Science, University of Alberta, Edmonton, AB, T6G 2P5, Canada
| | - Zhengping Wang
- Department of Agricultural Food and Nutritional Science, University of Alberta, Edmonton, AB, T6G 2P5, Canada
| | - Nat N V Kav
- Department of Agricultural Food and Nutritional Science, University of Alberta, Edmonton, AB, T6G 2P5, Canada
| | - Habibur Rahman
- Department of Agricultural Food and Nutritional Science, University of Alberta, Edmonton, AB, T6G 2P5, Canada.
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16
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Iqbal Z, Memon AG, Ahmad A, Iqbal MS. Calcium Mediated Cold Acclimation in Plants: Underlying Signaling and Molecular Mechanisms. FRONTIERS IN PLANT SCIENCE 2022; 13:855559. [PMID: 35574126 PMCID: PMC9094111 DOI: 10.3389/fpls.2022.855559] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2022] [Accepted: 03/31/2022] [Indexed: 05/23/2023]
Abstract
Exposure of plants to low temperatures adversely affects plant growth, development, and productivity. Plant response to cold stress is an intricate process that involves the orchestration of various physiological, signaling, biochemical, and molecular pathways. Calcium (Ca2+) signaling plays a crucial role in the acquisition of several stress responses, including cold. Upon perception of cold stress, Ca2+ channels and/or Ca2+ pumps are activated, which induces the Ca2+ signatures in plant cells. The Ca2+ signatures spatially and temporally act inside a plant cell and are eventually decoded by specific Ca2+ sensors. This series of events results in the molecular regulation of several transcription factors (TFs), leading to downstream gene expression and withdrawal of an appropriate response by the plant. In this context, calmodulin binding transcription activators (CAMTAs) constitute a group of TFs that regulate plant cold stress responses in a Ca2+ dependent manner. The present review provides a catalog of the recent progress made in comprehending the Ca2+ mediated cold acclimation in plants.
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Affiliation(s)
- Zahra Iqbal
- Molecular Crop Research Unit, Department of Biochemistry, Chulalongkorn University, Bangkok, Thailand
| | - Anjuman Gul Memon
- Department of Biochemistry, College of Medicine, Qassim University, Buraydah, Saudi Arabia
| | - Ausaf Ahmad
- Amity Institute of Biotechnology, Amity University Lucknow, Lucknow, India
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17
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Tan J, Zhou Z, Feng H, Xing J, Niu Y, Deng Z. Data-Independent Acquisition-Based Proteome and Phosphoproteome Profiling Reveals Early Protein Phosphorylation and Dephosphorylation Events in Arabidopsis Seedlings upon Cold Exposure. Int J Mol Sci 2021; 22:ijms222312856. [PMID: 34884660 PMCID: PMC8657928 DOI: 10.3390/ijms222312856] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2021] [Revised: 11/23/2021] [Accepted: 11/23/2021] [Indexed: 01/30/2023] Open
Abstract
Protein phosphorylation plays an important role in mediating signal transduction in cold response in plants. To better understand how plants sense and respond to the early temperature drop, we performed data-independent acquisition (DIA) method-based mass spectrometry analysis to profile the proteome and phosphoproteome of Arabidopsis seedlings upon cold stress in a time-course manner (10, 30 and 120 min of cold treatments). Our results showed the rapid and extensive changes at the phosphopeptide levels, but not at the protein abundance levels, indicating cold-mediated protein phosphorylation and dephosphorylation events. Alteration of over 1200 proteins at phosphopeptide levels were observed within 2 h of cold treatment, including over 140 kinases, over 40 transcriptional factors and over 40 E3 ligases, revealing the complexity of regulation of cold adaption. We summarized cold responsive phosphoproteins involved in phospholipid signaling, cytoskeleton reorganization, calcium signaling, and MAPK cascades. Cold-altered levels of 73 phosphopeptides (mostly novel cold-responsive) representing 62 proteins were validated by parallel reaction monitoring (PRM). In summary, this study furthers our understanding of the molecular mechanisms of cold adaption in plants and strongly supports that DIA coupled with PRM are valuable tools in uncovering early signaling events in plants.
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Affiliation(s)
- Jinjuan Tan
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-Products, Institute of Virology and Biotechnology, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China; (J.T.); (Z.Z.); (H.F.); (Y.N.)
| | - Zhongjing Zhou
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-Products, Institute of Virology and Biotechnology, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China; (J.T.); (Z.Z.); (H.F.); (Y.N.)
| | - Hanqian Feng
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-Products, Institute of Virology and Biotechnology, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China; (J.T.); (Z.Z.); (H.F.); (Y.N.)
| | - Jiayun Xing
- College of Agronomy, Hunan Agricultural University, Changsha 410128, China;
| | - Yujie Niu
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-Products, Institute of Virology and Biotechnology, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China; (J.T.); (Z.Z.); (H.F.); (Y.N.)
| | - Zhiping Deng
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-Products, Institute of Virology and Biotechnology, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China; (J.T.); (Z.Z.); (H.F.); (Y.N.)
- Correspondence:
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18
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Tong T, Li Q, Jiang W, Chen G, Xue D, Deng F, Zeng F, Chen ZH. Molecular Evolution of Calcium Signaling and Transport in Plant Adaptation to Abiotic Stress. Int J Mol Sci 2021; 22:12308. [PMID: 34830190 PMCID: PMC8618852 DOI: 10.3390/ijms222212308] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2021] [Revised: 11/06/2021] [Accepted: 11/12/2021] [Indexed: 01/16/2023] Open
Abstract
Adaptation to unfavorable abiotic stresses is one of the key processes in the evolution of plants. Calcium (Ca2+) signaling is characterized by the spatiotemporal pattern of Ca2+ distribution and the activities of multi-domain proteins in integrating environmental stimuli and cellular responses, which are crucial early events in abiotic stress responses in plants. However, a comprehensive summary and explanation for evolutionary and functional synergies in Ca2+ signaling remains elusive in green plants. We review mechanisms of Ca2+ membrane transporters and intracellular Ca2+ sensors with evolutionary imprinting and structural clues. These may provide molecular and bioinformatics insights for the functional analysis of some non-model species in the evolutionarily important green plant lineages. We summarize the chronological order, spatial location, and characteristics of Ca2+ functional proteins. Furthermore, we highlight the integral functions of calcium-signaling components in various nodes of the Ca2+ signaling pathway through conserved or variant evolutionary processes. These ultimately bridge the Ca2+ cascade reactions into regulatory networks, particularly in the hormonal signaling pathways. In summary, this review provides new perspectives towards a better understanding of the evolution, interaction and integration of Ca2+ signaling components in green plants, which is likely to benefit future research in agriculture, evolutionary biology, ecology and the environment.
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Affiliation(s)
- Tao Tong
- Hubei Collaborative Innovation Center for Grain Industry, College of Agriculture, Yangtze University, Jingzhou 434022, China; (T.T.); (W.J.); (F.D.)
| | - Qi Li
- Central Laboratory, Zhejiang Academy of Agricultural Science, Hangzhou 310030, China; (Q.L.); (G.C.)
| | - Wei Jiang
- Hubei Collaborative Innovation Center for Grain Industry, College of Agriculture, Yangtze University, Jingzhou 434022, China; (T.T.); (W.J.); (F.D.)
| | - Guang Chen
- Central Laboratory, Zhejiang Academy of Agricultural Science, Hangzhou 310030, China; (Q.L.); (G.C.)
| | - Dawei Xue
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 311121, China;
| | - Fenglin Deng
- Hubei Collaborative Innovation Center for Grain Industry, College of Agriculture, Yangtze University, Jingzhou 434022, China; (T.T.); (W.J.); (F.D.)
| | - Fanrong Zeng
- Hubei Collaborative Innovation Center for Grain Industry, College of Agriculture, Yangtze University, Jingzhou 434022, China; (T.T.); (W.J.); (F.D.)
| | - Zhong-Hua Chen
- School of Science, Western Sydney University, Penrith 2751, Australia
- Hawkesbury Institute for the Environment, Western Sydney University, Penrith 2751, Australia
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19
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Zheng S, Su M, Wang L, Zhang T, Wang J, Xie H, Wu X, Haq SIU, Qiu QS. Small signaling molecules in plant response to cold stress. JOURNAL OF PLANT PHYSIOLOGY 2021; 266:153534. [PMID: 34601338 DOI: 10.1016/j.jplph.2021.153534] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2021] [Revised: 09/21/2021] [Accepted: 09/21/2021] [Indexed: 06/13/2023]
Abstract
Cold stress is one of the harsh environmental stresses that adversely affect plant growth and crop yields in the Qinghai-Tibet Plateau. However, plants have evolved mechanisms to overcome the impact of cold stress. Progress has been made in understanding how plants perceive and transduce low-temperature signals to tolerate cold stress. Small signaling molecules are crucial for cellular signal transduction by initiating the downstream signaling cascade that helps plants to respond to cold stress. These small signaling molecules include calcium, reactive oxygen species, nitric oxide, hydrogen sulfide, cyclic guanosine monophosphate, phosphatidic acid, and sphingolipids. The small signaling molecules are involved in many aspects of cellular and physiological functions, such as inducing gene expression and activating hormone signaling, resulting in upregulation of the antioxidant enzyme activities, osmoprotectant accumulation, malondialdehyde reduction, and photosynthesis improvement. We summarize our current understanding of the roles of the small signaling molecules in cold stress in plants, and highlight their crosstalk in cold signaling transduction. These discoveries help us understand how the plateau plants adapt to the severe alpine environment as well as to develop new crops tolerating cold stress in the Qinghai-Tibet Plateau.
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Affiliation(s)
- Sheng Zheng
- College of Life Sciences, Northwest Normal University, Lanzhou, 730070, China
| | - Min Su
- College of Life Sciences, Northwest Normal University, Lanzhou, 730070, China
| | - Lu Wang
- MOE Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, Lanzhou, 730000, China
| | - Tengguo Zhang
- College of Life Sciences, Northwest Normal University, Lanzhou, 730070, China
| | - Juan Wang
- College of Life Sciences, Northwest Normal University, Lanzhou, 730070, China
| | - Huichun Xie
- Qinghai Provincial Key Laboratory of Medicinal Plant and Animal Resources of Qinghai-Tibet Plateau, School of Life Sciences, Qinghai Normal University, Xining, 810008, China
| | - Xuexia Wu
- State Key Laboratory of Plateau Ecology and Agriculture, Qinghai University, Xining, 810016, China
| | - Syed Inzimam Ul Haq
- MOE Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, Lanzhou, 730000, China
| | - Quan-Sheng Qiu
- MOE Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, Lanzhou, 730000, China.
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20
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Ebrahimie E, Zamansani F, Alanazi IO, Sabi EM, Khazandi M, Ebrahimi F, Mohammadi-Dehcheshmeh M, Ebrahimi M. Advances in understanding the specificity function of transporters by machine learning. Comput Biol Med 2021; 138:104893. [PMID: 34598069 DOI: 10.1016/j.compbiomed.2021.104893] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2021] [Revised: 09/20/2021] [Accepted: 09/22/2021] [Indexed: 11/25/2022]
Abstract
Understanding the underlying molecular mechanism of transporter activity is one of the major discussions in structural biology. A transporter can exclusively transport one ion (specific transporter) or multiple ions (general transporter). This study compared categorical and numerical features of general and specific calcium transporters using machine learning and attribute weighting models. To this end, 444 protein features, such as the frequency of dipeptides, organism, and subcellular location, were extracted for general (n = 103) and specific calcium transporters (n = 238). Aliphatic index, subcellular location, organism, Ile-Leu frequency, Glycine frequency, hydrophobic frequency, and specific dipeptides such as Ile-Leu, Phe-Val, and Tyr-Gln were the key features in differentiating general from specific calcium transporters. Calcium transporters in the cell outer membranes were specific, while the inner ones were general; additionally, when the hydrophobic frequency or Aliphatic index is increased, the calcium transporter act as a general transporter. Random Forest with accuracy criterion showed the highest accuracy (88.88% ±5.75%) and high AUC (0.964 ± 0.020), based on 5-fold cross-validation. Decision Tree with accuracy criterion was able to predict the specificity of calcium transporter irrespective of the organism and subcellular location. This study demonstrates the precise classification of transporter function based on sequence-derived physicochemical features.
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Affiliation(s)
- Esmaeil Ebrahimie
- Genomics Research Platform, School of Life Sciences, College of Science, Health and Engineering, La Trobe University, Melbourne, Victoria, 3086, Australia; School of Animal and Veterinary Sciences, The University of Adelaide, South Australia, 5371, Australia.
| | - Fatemeh Zamansani
- Department of Crop Production and Plant Breeding, College of Agriculture, Shiraz University, Shiraz, Iran.
| | - Ibrahim O Alanazi
- National Center for Biotechnology, Life Science and Environment Research Institute, King Abdulaziz City for Science and Technology (KACST), Riyadh, 6086, Saudi Arabia.
| | - Essa M Sabi
- Department of Pathology, Clinical Biochemistry Unit, College of Medicine, King Saud University, Riyadh, 11461, Saudi Arabia.
| | - Manouchehr Khazandi
- UniSA Clinical and Health Sciences, The University of South Australia, Adelaide, 5000, Australia.
| | - Faezeh Ebrahimi
- Faculty of Life Sciences and Biotechnology, Department of Microbiology and Microbial Biotechnology, Shahid Beheshti University, Tehran, Iran.
| | | | - Mansour Ebrahimi
- School of Animal and Veterinary Sciences, The University of Adelaide, South Australia, 5371, Australia; Department of Biology, School of Basic Sciences, University of Qom, Qom, Iran.
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21
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Abstract
Due to climate change, we are forced to face new abiotic stress challenges like cold and heat waves that currently result from global warming. Losses due to frost and low temperatures force us to better understand the physiological, hormonal, and molecular mechanisms of response to such stress to face losses, especially in tropical and subtropical crops like citrus fruit, which are well adapted to certain weather conditions. Many of the responses to cold stress that are found are also conserved in citrus. Hence, this review also intends to show the latest work on citrus. In addition to basic research, there is a great need to employ and cultivate new citrus rootstocks to better adapt to environmental conditions.
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22
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Convergence and Divergence: Signal Perception and Transduction Mechanisms of Cold Stress in Arabidopsis and Rice. PLANTS 2021; 10:plants10091864. [PMID: 34579397 PMCID: PMC8473081 DOI: 10.3390/plants10091864] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Revised: 09/06/2021] [Accepted: 09/06/2021] [Indexed: 12/18/2022]
Abstract
Cold stress, including freezing stress and chilling stress, is one of the major environmental factors that limit the growth and productivity of plants. As a temperate dicot model plant species, Arabidopsis develops a capability to freezing tolerance through cold acclimation. The past decades have witnessed a deep understanding of mechanisms underlying cold stress signal perception, transduction, and freezing tolerance in Arabidopsis. In contrast, a monocot cereal model plant species derived from tropical and subtropical origins, rice, is very sensitive to chilling stress and has evolved a different mechanism for chilling stress signaling and response. In this review, the authors summarized the recent progress in our understanding of cold stress response mechanisms, highlighted the convergent and divergent mechanisms between Arabidopsis and rice plasma membrane cold stress perceptions, calcium signaling, phospholipid signaling, MAPK cascade signaling, ROS signaling, and ICE-CBF regulatory network, as well as light-regulated signal transduction system. Genetic engineering approaches of developing freezing tolerant Arabidopsis and chilling tolerant rice were also reviewed. Finally, the future perspective of cold stress signaling and tolerance in rice was proposed.
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23
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The Rice Cation/H + Exchanger Family Involved in Cd Tolerance and Transport. Int J Mol Sci 2021; 22:ijms22158186. [PMID: 34360953 PMCID: PMC8348036 DOI: 10.3390/ijms22158186] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2021] [Revised: 07/25/2021] [Accepted: 07/27/2021] [Indexed: 11/17/2022] Open
Abstract
Cadmium (Cd), a heavy metal toxic to humans, easily accumulates in rice grains. Rice with unacceptable Cd content has become a serious food safety problem in many rice production regions due to contaminations by industrialization and inappropriate waste management. The development of rice varieties with low grain Cd content is seen as an economic and long-term solution of this problem. The cation/H+ exchanger (CAX) family has been shown to play important roles in Cd uptake, transport and accumulation in plants. Here, we report the characterization of the rice CAX family. The six rice CAX genes all have homologous genes in Arabidopsis thaliana. Phylogenetic analysis identified two subfamilies with three rice and three Arabidopsis thaliana genes in both of them. All rice CAX genes have trans-member structures. OsCAX1a and OsCAX1c were localized in the vacuolar while OsCAX4 were localized in the plasma membrane in rice cell. The consequences of qRT-PCR analysis showed that all the six genes strongly expressed in the leaves under the different Cd treatments. Their expression in roots increased in a Cd dose-dependent manner. GUS staining assay showed that all the six rice CAX genes strongly expressed in roots, whereas OsCAX1c and OsCAX4 also strongly expressed in rice leaves. The yeast (Saccharomyces cerevisiae) cells expressing OsCAX1a, OsCAX1c and OsCAX4 grew better than those expressing the vector control on SD-Gal medium containing CdCl2. OsCAX1a and OsCAX1c enhanced while OsCAX4 reduced Cd accumulation in yeast. No auto-inhibition was found for all the rice CAX genes. Therefore, OsCAX1a, OsCAX1c and OsCAX4 are likely to involve in Cd uptake and translocation in rice, which need to be further validated.
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Dikaya V, El Arbi N, Rojas-Murcia N, Nardeli SM, Goretti D, Schmid M. Insights into the role of alternative splicing in plant temperature response. JOURNAL OF EXPERIMENTAL BOTANY 2021:erab234. [PMID: 34105719 DOI: 10.1093/jxb/erab234] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Indexed: 05/21/2023]
Abstract
Alternative splicing occurs in all eukaryotic organisms. Since the first description of multiexon genes and the splicing machinery, the field has expanded rapidly, especially in animals and yeast. However, our knowledge about splicing in plants is still quite fragmented. Though eukaryotes show some similarity in the composition and dynamics of the splicing machinery, observations of unique plant traits are only starting to emerge. For instance, plant alternative splicing is closely linked to their ability to perceive various environmental stimuli. Due to their sessile lifestyle, temperature is a central source of information allowing plants to adjust their development to match current growth conditions. Hence, seasonal temperature fluctuations and day-night cycles can strongly influence plant morphology across developmental stages. Here we discuss the available data about temperature-dependent alternative splicing in plants. Given its fragmented state it is not always possible to fit specific observations into a coherent picture, yet it is sufficient to estimate the complexity of this field and the need of further research. Better understanding of alternative splicing as a part of plant temperature response and adaptation may also prove to be a powerful tool for both, fundamental and applied sciences.
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Affiliation(s)
- Varvara Dikaya
- Umeå Plant Science Centre, Department of Plant Physiology, Umeå University, Umeå, Sweden
| | - Nabila El Arbi
- Umeå Plant Science Centre, Department of Plant Physiology, Umeå University, Umeå, Sweden
| | - Nelson Rojas-Murcia
- Umeå Plant Science Centre, Department of Plant Physiology, Umeå University, Umeå, Sweden
| | - Sarah Muniz Nardeli
- Umeå Plant Science Centre, Department of Plant Physiology, Umeå University, Umeå, Sweden
| | - Daniela Goretti
- Umeå Plant Science Centre, Department of Plant Physiology, Umeå University, Umeå, Sweden
| | - Markus Schmid
- Umeå Plant Science Centre, Department of Plant Physiology, Umeå University, Umeå, Sweden
- Beijing Advanced Innovation Centre for Tree Breeding by Molecular Design, Beijing Forestry University, Beijing, People's Republic of China
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Catalá R, López-Cobollo R, Berbís MÁ, Jiménez-Barbero J, Salinas J. Trimethylamine N-oxide is a new plant molecule that promotes abiotic stress tolerance. SCIENCE ADVANCES 2021; 7:7/21/eabd9296. [PMID: 34138745 PMCID: PMC8133759 DOI: 10.1126/sciadv.abd9296] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/21/2020] [Accepted: 03/29/2021] [Indexed: 05/20/2023]
Abstract
Trimethylamine N-oxide (TMAO) is a well-known naturally occurring osmolyte in animals that counteracts the effect of different denaturants related to environmental stress and has recently been associated with severe human chronic diseases. In plants, however, the presence of TMAO has not yet been reported. In this study, we demonstrate that plants contain endogenous levels of TMAO, that it is synthesized by flavin-containing monooxygenases, and that its levels increase in response to abiotic stress conditions. In addition, our results reveal that TMAO operates as a protective osmolyte in plants, promoting appropriate protein folding and as an activator of abiotic stress-induced gene expression. Consistent with these functions, we show that TMAO enhances plant adaptation to low temperatures, drought, and high salt. We have thus uncovered a previously unidentified plant molecule that positively regulates abiotic stress tolerance.
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Affiliation(s)
- Rafael Catalá
- Departamento de Biotecnología Microbiana y de Plantas, Centro de Investigaciones Biológicas Margarita Salas-CSIC, Madrid 28040, Spain.
| | - Rosa López-Cobollo
- Departamento de Biotecnología Microbiana y de Plantas, Centro de Investigaciones Biológicas Margarita Salas-CSIC, Madrid 28040, Spain
| | - M Álvaro Berbís
- Departamento de Biología Estructural y Química, Centro de Investigaciones Biológicas Margarita Salas-CSIC, Madrid 28040, Spain
| | - Jesús Jiménez-Barbero
- Departamento de Biología Estructural y Química, Centro de Investigaciones Biológicas Margarita Salas-CSIC, Madrid 28040, Spain
| | - Julio Salinas
- Departamento de Biotecnología Microbiana y de Plantas, Centro de Investigaciones Biológicas Margarita Salas-CSIC, Madrid 28040, Spain.
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Barzana G, Rios JJ, Lopez-Zaplana A, Nicolas-Espinosa J, Yepes-Molina L, Garcia-Ibañez P, Carvajal M. Interrelations of nutrient and water transporters in plants under abiotic stress. PHYSIOLOGIA PLANTARUM 2021; 171:595-619. [PMID: 32909634 DOI: 10.1111/ppl.13206] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2020] [Revised: 08/20/2020] [Accepted: 09/03/2020] [Indexed: 05/12/2023]
Abstract
Environmental changes cause abiotic stress in plants, primarily through alterations in the uptake of the nutrients and water they require for their metabolism and growth and to maintain their cellular homeostasis. The plasma membranes of cells contain transporter proteins, encoded by their specific genes, responsible for the uptake of nutrients and water (aquaporins). However, their interregulation has rarely been taken into account. Therefore, in this review we identify how the plant genome responds to abiotic stresses such as nutrient deficiency, drought, salinity and low temperature, in relation to both nutrient transporters and aquaporins. Some general responses or regulation mechanisms can be observed under each abiotic stress such as the induction of plasma membrane transporter expression during macronutrient deficiency, the induction of tonoplast transporters and reduction of aquaporins during micronutrients deficiency. However, drought, salinity and low temperatures generally cause an increase in expression of nutrient transporters and aquaporins in tolerant plants. We propose that both types of transporters (nutrients and water) should be considered jointly in order to better understand plant tolerance of stresses.
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Affiliation(s)
- Gloria Barzana
- Aquaporins Group, Centro de Edafologia y Biologia Aplicada del Segura, CEBAS-CSIC, Campus Universitario de Espinardo - 25, Murcia, E-30100, Spain
| | - Juan J Rios
- Aquaporins Group, Centro de Edafologia y Biologia Aplicada del Segura, CEBAS-CSIC, Campus Universitario de Espinardo - 25, Murcia, E-30100, Spain
| | - Alvaro Lopez-Zaplana
- Aquaporins Group, Centro de Edafologia y Biologia Aplicada del Segura, CEBAS-CSIC, Campus Universitario de Espinardo - 25, Murcia, E-30100, Spain
| | - Juan Nicolas-Espinosa
- Aquaporins Group, Centro de Edafologia y Biologia Aplicada del Segura, CEBAS-CSIC, Campus Universitario de Espinardo - 25, Murcia, E-30100, Spain
| | - Lucía Yepes-Molina
- Aquaporins Group, Centro de Edafologia y Biologia Aplicada del Segura, CEBAS-CSIC, Campus Universitario de Espinardo - 25, Murcia, E-30100, Spain
| | - Paula Garcia-Ibañez
- Aquaporins Group, Centro de Edafologia y Biologia Aplicada del Segura, CEBAS-CSIC, Campus Universitario de Espinardo - 25, Murcia, E-30100, Spain
| | - Micaela Carvajal
- Aquaporins Group, Centro de Edafologia y Biologia Aplicada del Segura, CEBAS-CSIC, Campus Universitario de Espinardo - 25, Murcia, E-30100, Spain
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Wang L, Sadeghnezhad E, Guan P, Gong P. Review: Microtubules monitor calcium and reactive oxygen species signatures in signal transduction. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2021; 304:110589. [PMID: 33568282 DOI: 10.1016/j.plantsci.2020.110589] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2020] [Revised: 05/18/2020] [Accepted: 06/22/2020] [Indexed: 06/12/2023]
Abstract
Signal transductions require calcium (Ca2+) or reactive oxygen species (ROS) signatures, which act as chemical and electrical signals in response to various biotic and abiotic stresses. Calcium as an ion or second messenger affects the membrane potential and microtubules (MTs) dynamicity, while MTs can modulate auto-propagating waves of calcium and ROS signatures in collaboration with ion channels depending on the stimulus type. Thus, in the current review, we highlight advances in research focused on the relationship between dynamic MTs and calcium and ROS signatures in short-distance transmission. The challenges of Ca2+-MTs-ROS crosstalk in cold sensing are addressed, which could suggest the prioritization of ROS or Ca2+ in signalling.
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Affiliation(s)
- Lixin Wang
- College of Horticulture, Hebei Agricultural University, Baoding, Hebei, China
| | - Ehsan Sadeghnezhad
- Department of Plant Biology, Faculty of Biological Sciences, Tarbiat Modares University, Teheran, Iran.
| | - Pingyin Guan
- Laboratory of Fruit Physiology and Molecular Biology, China Agricultural University, Beijing, China
| | - Peijie Gong
- Key Laboratory of Genetics and Fruit Development, College of Horticulture, Nanjing Agricultural University, Nanjing, China
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Martins V, Gerós H. The grapevine CAX-interacting protein VvCXIP4 is exported from the nucleus to activate the tonoplast Ca 2+/H + exchanger VvCAX3. PLANTA 2020; 252:35. [PMID: 32767128 DOI: 10.1007/s00425-020-03442-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/09/2020] [Accepted: 07/31/2020] [Indexed: 06/11/2023]
Abstract
The nuclear-localized CAX-interacting protein VvCXIP4 is exported to the cytosol after a Ca2+ pulse, to activate the tonoplast-localized Ca2+/H+ exchanger VvCAX3. Vacuolar cation/H+ exchangers (CAXs) have long been recognized as 'housekeeping' components in cellular Ca2+ and trace metal homeostasis, being involved in a range of key cellular and physiological processes. However, the mechanisms that drive functional activation of the transporters are largely unknown. In the present study, we investigated the function of a putative grapevine CAX-interacting protein, VvCXIP4, by testing its ability to activate VvCAX3, previously characterized as a tonoplast-localized Ca2+/H+ exchanger. VvCAX3 contains an autoinhibitory domain that drives inactivation of the transporter and thus, is incapable of suppressing the Ca2+-hypersensitive phenotype of the S. cerevisiae mutant K667. In this study, the co-expression of VvCXIP4 and VvCAX3 in this strain efficiently rescued its growth defect at high Ca2+ levels. Flow cytometry experiments showed that yeast harboring both proteins effectively accumulated higher Ca2+ levels than cells expressing each of the proteins separately. Bimolecular fluorescence complementation (BiFC) assays allowed visualization of the direct interaction between the proteins in tobacco plants and in yeast, and also showed the self-interaction of VvCAX3 but not of VvCXIP4. Subcellular localization studies showed that, despite being primarily localized to the nucleus, VvCXIP4 is able to move to other cell compartments upon a Ca2+ stimulus, becoming prone to interaction with the tonoplast-localized VvCAX3. qPCR analysis showed that both genes are more expressed in grapevine stems and leaves, followed by the roots, and that the steady-state transcript levels were higher in the pulp than in the skin of grape berries. Also, both VvCXIP4 and VvCAX3 were upregulated by Ca2+ and Na+, indicating they share common regulatory mechanisms. However, VvCXIP4 was also upregulated by Li+, Cu2+ and Mn2+, and its expression increased steadily throughout grape berry development, contrary to VvCAX3, suggesting additional physiological roles for VvCXIP4, including the regulation of VvCAXs not yet functionally characterized. The main novelty of the present study was the demonstration of physical interaction between CXIP and CAX proteins from a woody plant model by BiFC assays, demonstrating the intracellular mobilization of CXIPs in response to Ca2+.
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Affiliation(s)
- Viviana Martins
- Centre of Molecular and Environmental Biology, Department of Biology, University of Minho, Campus de Gualtar, 4710-057, Braga, Portugal.
- Centre for the Research and Technology of Agro-Environmental and Biological Sciences, University of Trás-Os-Montes and Alto Douro, 5001-801, Vila Real, Portugal.
| | - Hernâni Gerós
- Centre of Molecular and Environmental Biology, Department of Biology, University of Minho, Campus de Gualtar, 4710-057, Braga, Portugal
- Centre for the Research and Technology of Agro-Environmental and Biological Sciences, University of Trás-Os-Montes and Alto Douro, 5001-801, Vila Real, Portugal
- Centre of Biological Engineering (CEB), Department of Biological Engineering, University of Minho, Campus de Gualtar, 4710-057, Braga, Portugal
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Guo X, Zhang L, Dong G, Xu Z, Li G, Liu N, Wang A, Zhu J. A novel cold-regulated protein isolated from Saussurea involucrata confers cold and drought tolerance in transgenic tobacco (Nicotiana tabacum). PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2019; 289:110246. [PMID: 31623784 DOI: 10.1016/j.plantsci.2019.110246] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/24/2018] [Revised: 08/29/2019] [Accepted: 08/30/2019] [Indexed: 05/08/2023]
Abstract
Adverse environmental conditions, such as cold and drought, can inhibit plant growth, development, and productivity. The isolation and characterization of stress response genes from stress-tolerant plants can provide a better understanding of the underlying adaptive mechanisms. In this study, a novel cold-regulated gene, SikCOR413PM1, was isolated from Saussurea involucrata Kar. et Kir., which is a plant that survives at the high altitudes and in the low temperatures of alpine slopes in northwestern China. SikCOR413PM1 was induced in response to cold and drought in S. involucrata, and phylogenetic analysis revealed that the gene groups with a COR gene encoding a COR413PM protein family member. Subcellular localization of a SikCOR413PM1-green fluorescent fusion protein showed that SikCOR413PM1 was localized to the plasma membrane. A transgenic tobacco (Nicotiana tabacum) system was employed to investigate the possible role of SikCOR413PM1 in cold and drought tolerance. Analyses of growth, germination and survival rates, relative water content, malondialdehyde content, relative electrolyte leakage, and maximal photochemical efficiency of photosystem II showed that transgenic tobacco plants expressing SikCOR413PM1 were more tolerant to cold and drought stresses than WT plants. SikCOR413PM1 overexpression was also accompanied by constitutive activation of NtDREB1 and NtDREB3, two cold-responsive transcription factor genes, and NtERD10A and NtERD10B, two cold-induced genes. The expression levels of downstream transcription factor genes NtDREB3, NtERD10C, NtERD10D, and NtLEA5 were also induced in SikCOR413PM1-expressing transgenic plants under drought conditions. Our results suggest that the overexpression of SikCOR413PM1 induces changes in tobacco plants, and facilitates enhanced tolerance to cold and drought stresses.
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Affiliation(s)
- Xinyong Guo
- Key Laboratory of Agricultural Biotechnology, College of Life Science, Shihezi University, Shihezi 832000, China
| | - Li Zhang
- Key Laboratory of Agricultural Biotechnology, College of Life Science, Shihezi University, Shihezi 832000, China
| | - Gaoquan Dong
- Key Laboratory of Agricultural Biotechnology, College of Life Science, Shihezi University, Shihezi 832000, China
| | - Zhihua Xu
- Key Laboratory of Agricultural Biotechnology, College of Life Science, Shihezi University, Shihezi 832000, China
| | - Guiming Li
- Key Laboratory of Agricultural Biotechnology, College of Life Science, Shihezi University, Shihezi 832000, China
| | - Ning Liu
- Key Laboratory of Agricultural Biotechnology, College of Life Science, Shihezi University, Shihezi 832000, China
| | - Aiying Wang
- Key Laboratory of Agricultural Biotechnology, College of Life Science, Shihezi University, Shihezi 832000, China
| | - Jianbo Zhu
- Key Laboratory of Agricultural Biotechnology, College of Life Science, Shihezi University, Shihezi 832000, China.
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30
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Navarro-León E, Ruiz JM, Albacete A, Blasco B. Effect of CAX1a TILLING mutations and calcium concentration on some primary metabolism processes in Brassica rapa plants. JOURNAL OF PLANT PHYSIOLOGY 2019; 237:51-60. [PMID: 31022665 DOI: 10.1016/j.jplph.2019.04.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/15/2019] [Revised: 04/04/2019] [Accepted: 04/08/2019] [Indexed: 06/09/2023]
Abstract
Cation/H+ exchanger transporters (CAXs) are crucial in Ca2+ homeostasis and in the generation of Ca2+ profiles involved in signalling processes. Given the crucial role of CAX1 in Ca2+ homeostasis, CAX1 modifications could have effects on plant metabolism. Three Brassica rapa mutants for CAX1 were obtained through TILLING. The aim of this work is to assess the effect of the different mutations and different Ca2+ doses on plant metabolism. For this, the mutants and the parental line were grown under low, control and high Ca2+ doses and parameters related to nitrogen (N) and tricarboxylic acid (TCA) metabolisms, and amino acid (AAs) and phytohormone profiles were measured. The results show that BraA.cax1a mutations affect metabolism especially under high Ca2+ dose. Thus, BraA.cax1a-7 inhibited some N metabolism enzymes and activated photorespiration activity. On the opposite side, BraA.cax1a-12 mutation provides a better tolerance to high Ca2+ dose. This tolerance could be provided by an improved N and TCA metabolisms enzymes, and a higher glutamate, malate, indole-3-acetic acid and abscisic acid concentrations. Therefore, BraA.cax1a-12 mutation could be used for B. rapa improving; the metabolomics changes observed in this mutant could be responsible for a better tolerance to high Ca2+.
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Affiliation(s)
- Eloy Navarro-León
- Department of Plant Physiology, Faculty of Sciences, University of Granada, 18071 Granada, Spain.
| | - Juan Manuel Ruiz
- Department of Plant Physiology, Faculty of Sciences, University of Granada, 18071 Granada, Spain.
| | - Alfonso Albacete
- Department of Plant Nutrition, CEBAS-CSIC, Campus de Espinardo, E-30100, Espinardo, Murcia, Spain.
| | - Begoña Blasco
- Department of Plant Physiology, Faculty of Sciences, University of Granada, 18071 Granada, Spain.
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31
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Li P, Zheng T, Li L, Zhuo X, Jiang L, Wang J, Cheng T, Zhang Q. Identification and comparative analysis of the CIPK gene family and characterization of the cold stress response in the woody plant Prunus mume. PeerJ 2019; 7:e6847. [PMID: 31106064 PMCID: PMC6499057 DOI: 10.7717/peerj.6847] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2019] [Accepted: 03/25/2019] [Indexed: 11/20/2022] Open
Abstract
Prunus mume is an important ornamental woody plant that grows in tropical and subtropical regions. Freezing stress can adversely impact plant productivity and limit the expansion of geographical locations. Understanding cold-responsive genes could potentially bring about the development of new ways to enhance plant freezing tolerance. Members of the serine/threonine protein kinase (CIPK) gene family play important roles in abiotic stress. However, the function of CIPK genes in P. mume remains poorly defined. A total of 16 CIPK genes were first identified in P. mume. A systematic phylogenetic analysis was conducted in which 253 CIPK genes from 12 species were divided into three groups. Furthermore, we analysed the chromosomal locations, molecular structures, motifs and domains of CIPK genes in P. mume. All of the CIPK sequences had NAF domains and promoter regions containing cis-acting regulatory elements of the related stress response. Three PmCIPK genes were identified as Pmu-miR172/167-targeted sites. Transcriptome data showed that most PmCIPK genes presented tissue-specific and time-specific expression profiles. Nine genes were highly expressed in flower buds in December and January, and 12 genes were up-regulated in stems in winter. The expression levels of 12 PmCIPK genes were up-regulated during cold stress treatment confirmed by qRT-PCR. Our study improves understanding of the role of the PmCIPK gene family in the low temperature response in woody plants and provides key candidate genes and a theoretical basis for cold resistance molecular-assisted breeding technology in P. mume.
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Affiliation(s)
- Ping Li
- Beijing Key Laboratory of Ornamental Plants Germplasm Innovation & Molecular Breeding, Beijing Forestry University, Beijing, China.,National Engineering Research Center for Floriculture, Beijing Forestry University, Beijing, China.,Beijing Laboratory of Urban and Rural Ecological Environment, Beijing Forestry University, Beijing, China.,Engineering Research Center of Landscape Environment of Ministry of Education, Beijing Forestry University, Beijing, China.,Key Laboratory of Genetics and Breeding in Forest Trees and Ornamental Plants of Ministry of Education, Beijing Forestry University, Beijing, China.,Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, Beijing Forestry University, Beijing, China
| | - Tangchun Zheng
- Beijing Key Laboratory of Ornamental Plants Germplasm Innovation & Molecular Breeding, Beijing Forestry University, Beijing, China.,National Engineering Research Center for Floriculture, Beijing Forestry University, Beijing, China.,Beijing Laboratory of Urban and Rural Ecological Environment, Beijing Forestry University, Beijing, China.,Engineering Research Center of Landscape Environment of Ministry of Education, Beijing Forestry University, Beijing, China.,Key Laboratory of Genetics and Breeding in Forest Trees and Ornamental Plants of Ministry of Education, Beijing Forestry University, Beijing, China
| | - Lulu Li
- Beijing Key Laboratory of Ornamental Plants Germplasm Innovation & Molecular Breeding, Beijing Forestry University, Beijing, China.,National Engineering Research Center for Floriculture, Beijing Forestry University, Beijing, China.,Beijing Laboratory of Urban and Rural Ecological Environment, Beijing Forestry University, Beijing, China.,Engineering Research Center of Landscape Environment of Ministry of Education, Beijing Forestry University, Beijing, China.,Key Laboratory of Genetics and Breeding in Forest Trees and Ornamental Plants of Ministry of Education, Beijing Forestry University, Beijing, China.,Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, Beijing Forestry University, Beijing, China
| | - Xiaokang Zhuo
- Beijing Key Laboratory of Ornamental Plants Germplasm Innovation & Molecular Breeding, Beijing Forestry University, Beijing, China.,National Engineering Research Center for Floriculture, Beijing Forestry University, Beijing, China.,Beijing Laboratory of Urban and Rural Ecological Environment, Beijing Forestry University, Beijing, China.,Engineering Research Center of Landscape Environment of Ministry of Education, Beijing Forestry University, Beijing, China.,Key Laboratory of Genetics and Breeding in Forest Trees and Ornamental Plants of Ministry of Education, Beijing Forestry University, Beijing, China.,Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, Beijing Forestry University, Beijing, China
| | - Liangbao Jiang
- Beijing Key Laboratory of Ornamental Plants Germplasm Innovation & Molecular Breeding, Beijing Forestry University, Beijing, China.,National Engineering Research Center for Floriculture, Beijing Forestry University, Beijing, China.,Beijing Laboratory of Urban and Rural Ecological Environment, Beijing Forestry University, Beijing, China.,Engineering Research Center of Landscape Environment of Ministry of Education, Beijing Forestry University, Beijing, China.,Key Laboratory of Genetics and Breeding in Forest Trees and Ornamental Plants of Ministry of Education, Beijing Forestry University, Beijing, China.,Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, Beijing Forestry University, Beijing, China
| | - Jia Wang
- Beijing Key Laboratory of Ornamental Plants Germplasm Innovation & Molecular Breeding, Beijing Forestry University, Beijing, China.,National Engineering Research Center for Floriculture, Beijing Forestry University, Beijing, China.,Beijing Laboratory of Urban and Rural Ecological Environment, Beijing Forestry University, Beijing, China.,Engineering Research Center of Landscape Environment of Ministry of Education, Beijing Forestry University, Beijing, China.,Key Laboratory of Genetics and Breeding in Forest Trees and Ornamental Plants of Ministry of Education, Beijing Forestry University, Beijing, China
| | - Tangren Cheng
- Beijing Key Laboratory of Ornamental Plants Germplasm Innovation & Molecular Breeding, Beijing Forestry University, Beijing, China.,National Engineering Research Center for Floriculture, Beijing Forestry University, Beijing, China.,Beijing Laboratory of Urban and Rural Ecological Environment, Beijing Forestry University, Beijing, China.,Engineering Research Center of Landscape Environment of Ministry of Education, Beijing Forestry University, Beijing, China.,Key Laboratory of Genetics and Breeding in Forest Trees and Ornamental Plants of Ministry of Education, Beijing Forestry University, Beijing, China
| | - Qixiang Zhang
- Beijing Key Laboratory of Ornamental Plants Germplasm Innovation & Molecular Breeding, Beijing Forestry University, Beijing, China.,National Engineering Research Center for Floriculture, Beijing Forestry University, Beijing, China.,Beijing Laboratory of Urban and Rural Ecological Environment, Beijing Forestry University, Beijing, China.,Engineering Research Center of Landscape Environment of Ministry of Education, Beijing Forestry University, Beijing, China.,Key Laboratory of Genetics and Breeding in Forest Trees and Ornamental Plants of Ministry of Education, Beijing Forestry University, Beijing, China.,Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, Beijing Forestry University, Beijing, China
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32
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Ahmadi H, Corso M, Weber M, Verbruggen N, Clemens S. CAX1 suppresses Cd-induced generation of reactive oxygen species in Arabidopsis halleri. PLANT, CELL & ENVIRONMENT 2018; 41:2435-2448. [PMID: 29879753 DOI: 10.1111/pce.13362] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2018] [Revised: 04/12/2018] [Accepted: 05/25/2018] [Indexed: 05/11/2023]
Abstract
The molecular analysis of metal hyperaccumulation in species such as Arabidopsis halleri offers the chance to gain insights into metal homeostasis and into the evolution of adaptation to extreme habitats. A prerequisite of metal hyperaccumulation is metal hypertolerance. Genetic analysis of a backcross population derived from Arabidopsis lyrata × A. halleri crosses revealed three quantitative trait loci for Cd hypertolerance. A candidate gene for Cdtol2 is AhCAX1, encoding a vacuolar Ca2+ /H+ antiporter. We developed a method for the transformation of vegetatively propagated A. halleri plants and generated AhCAX1-silenced lines. Upon Cd2+ exposure, several-fold higher accumulation of reactive oxygen species (ROS) was detectable in roots of AhCAX1-silenced plants. In accordance with the dependence of Cdtol2 on external Ca2+ concentration, this phenotype was exclusively observed in low Ca2+ conditions. The effects of external Ca2+ on Cd accumulation cannot explain the phenotype as they were not influenced by the genotype. Our data strongly support the hypothesis that higher expression of CAX1 in A. halleri relative to other Arabidopsis species represents a Cd hypertolerance factor. We propose a function of AhCAX1 in preventing a positive feedback loop of Cd-elicited ROS production triggering further Ca2+ -dependent ROS accumulation.
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Affiliation(s)
- Hassan Ahmadi
- University of Bayreuth, Department of Plant Physiology, and Bayreuth Center of Ecology and Environmental Research, Bayreuth, Germany
| | - Massimiliano Corso
- Université Libre de Bruxelles, Laboratory of Plant Physiology and Molecular Genetics, Brussels, Belgium
| | - Michael Weber
- University of Bayreuth, Department of Plant Physiology, and Bayreuth Center of Ecology and Environmental Research, Bayreuth, Germany
| | - Nathalie Verbruggen
- Université Libre de Bruxelles, Laboratory of Plant Physiology and Molecular Genetics, Brussels, Belgium
| | - Stephan Clemens
- University of Bayreuth, Department of Plant Physiology, and Bayreuth Center of Ecology and Environmental Research, Bayreuth, Germany
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Cheng H, Chen X, Fang J, An Z, Hu Y, Huang H. Comparative transcriptome analysis reveals an early gene expression profile that contributes to cold resistance in Hevea brasiliensis (the Para rubber tree). TREE PHYSIOLOGY 2018; 38:1409-1423. [PMID: 29474681 DOI: 10.1093/treephys/tpy014] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2017] [Accepted: 01/26/2018] [Indexed: 06/08/2023]
Abstract
The rubber tree (Hevea brasiliensis Muell. Arg) is a tropical, perennial, woody plant that is susceptible to cold stress. In China, cold stress has been found to severely damage rubber plants in plantations in past decades. Although several Hevea clones that are resistant to cold have been developed, their cold hardiness mechanism has yet to be elucidated. For the study reported herein, we subjected the cold-resistant clone CATAS93-114 and the cold-sensitive clone Reken501 to chilling stress, and characterized their transcriptomes at 0, 2, 8 and 24 h after the start of chilling. We found that 7870 genes were differentially expressed in the transcriptomes of the two clones. In CATAS93-114, a greater number of genes were found to be up- or downregulated between 2 h and 8 h than in Reken501, which indicated a more rapid and intensive response by CATAS93-114 than by Reken501. The differentially expressed genes were grouped into seven major clusters, according to their Gene Ontology terms. The expression profiles for genes involved in abscisic acid metabolism and signaling, in an abscisic acid-independent pathway, and in early signal perception were found to have distinct expression patterns for the transcriptomes of the two clones. The differential expression of 22 genes that appeared to have central roles in response to chilling was confirmed by quantitative real-time PCR.
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Affiliation(s)
- Han Cheng
- Key Laboratory of Rubber Biology, Ministry of Agriculture, Rubber Research Institute, Chinese Academy of Tropical Agricultural Sciences, Danzhou, Hainan, People's Republic of China
| | - Xiang Chen
- Key Laboratory of Rubber Biology, Ministry of Agriculture, Rubber Research Institute, Chinese Academy of Tropical Agricultural Sciences, Danzhou, Hainan, People's Republic of China
| | - Jialin Fang
- Key Laboratory of Rubber Biology, Ministry of Agriculture, Rubber Research Institute, Chinese Academy of Tropical Agricultural Sciences, Danzhou, Hainan, People's Republic of China
| | - Zewei An
- Key Laboratory of Rubber Biology, Ministry of Agriculture, Rubber Research Institute, Chinese Academy of Tropical Agricultural Sciences, Danzhou, Hainan, People's Republic of China
| | - Yanshi Hu
- Key Laboratory of Rubber Biology, Ministry of Agriculture, Rubber Research Institute, Chinese Academy of Tropical Agricultural Sciences, Danzhou, Hainan, People's Republic of China
| | - Huasun Huang
- Key Laboratory of Rubber Biology, Ministry of Agriculture, Rubber Research Institute, Chinese Academy of Tropical Agricultural Sciences, Danzhou, Hainan, People's Republic of China
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Xiao N, Gao Y, Qian H, Gao Q, Wu Y, Zhang D, Zhang X, Yu L, Li Y, Pan C, Liu G, Zhou C, Jiang M, Huang N, Dai Z, Liang C, Chen Z, Chen J, Li A. Identification of Genes Related to Cold Tolerance and a Functional Allele That Confers Cold Tolerance. PLANT PHYSIOLOGY 2018; 177:1108-1123. [PMID: 29764927 PMCID: PMC6052991 DOI: 10.1104/pp.18.00209] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2018] [Accepted: 05/05/2018] [Indexed: 05/22/2023]
Abstract
Cold stress is a major factor limiting rice (Oryza sativa) production worldwide, especially at the seedling and booting stages. The identification of genes associated with cold tolerance (CT) in rice is important for sustainable food production. Here, we report the results of a genome-wide association study to identify the genetic loci associated with CT by using a 1,033-accession diversity panel. We identified five CT-related genetic loci at the booting stage. Accessions carrying multiple cold-tolerant alleles displayed a higher seed-setting rate than did accessions that had no cold-tolerant alleles or carried a single allele. At the seedling stage, eight genetic loci related to CT have been identified. Among these, LOC_Os10g34840 was identified as the candidate gene for the qPSR10 genetic locus that is associated with CT in rice seedlings. A single-nucleotide polymorphism (SNP), SNP2G, at position 343 in LOC_Os10g34840 is responsible for conferring CT at the seedling stage in rice. Further analysis of the haplotype network revealed that SNP2G was present in 80.08% of the temperate japonica accessions but only 3.8% of the indica ones. We used marker-assisted selection to construct a series of BC4F3 near-isogenic lines possessing the cold-tolerant allele SNP2G When subjected to cold stress, plants carrying SNP2G survived better as seedlings and showed higher grain weight than plants carrying the SNP2A allele. The CT-related loci identified here and the functional verification of LOC_Os10g34840 will provide genetic resources for breeding cold-tolerant varieties and for studying the molecular basis of CT in rice.
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Affiliation(s)
- Ning Xiao
- Institute of Agricultural Sciences for Lixiahe Region in Jiangsu, Yangzhou 225009, China
- Jiangsu Collaborative Innovation Center for Modern Crop Production, Nanjing 210095, China
- National Rice Industry Technology System of Yangzhou Comprehensive Experimental Station, Yangzhou, Jiangsu Province, 225009, China
| | - Yong Gao
- Jiangsu Key Laboratories of Crop Genetics and Physiology and Plant Functional Genomics of the Ministry of Education, Co-Innovation Center for Modern Production Technology of Grain Crops of Jiangsu, Yangzhou University, Yangzhou 225009, China
| | - Huangjun Qian
- Jiangsu Key Laboratories of Crop Genetics and Physiology and Plant Functional Genomics of the Ministry of Education, Co-Innovation Center for Modern Production Technology of Grain Crops of Jiangsu, Yangzhou University, Yangzhou 225009, China
| | - Qiang Gao
- Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China
| | - Yunyu Wu
- Institute of Agricultural Sciences for Lixiahe Region in Jiangsu, Yangzhou 225009, China
- Jiangsu Collaborative Innovation Center for Modern Crop Production, Nanjing 210095, China
- National Rice Industry Technology System of Yangzhou Comprehensive Experimental Station, Yangzhou, Jiangsu Province, 225009, China
| | - Dongping Zhang
- Jiangsu Key Laboratories of Crop Genetics and Physiology and Plant Functional Genomics of the Ministry of Education, Co-Innovation Center for Modern Production Technology of Grain Crops of Jiangsu, Yangzhou University, Yangzhou 225009, China
| | - Xiaoxiang Zhang
- Institute of Agricultural Sciences for Lixiahe Region in Jiangsu, Yangzhou 225009, China
| | - Ling Yu
- Institute of Agricultural Sciences for Lixiahe Region in Jiangsu, Yangzhou 225009, China
| | - Yuhong Li
- Institute of Agricultural Sciences for Lixiahe Region in Jiangsu, Yangzhou 225009, China
| | - Cunhong Pan
- Institute of Agricultural Sciences for Lixiahe Region in Jiangsu, Yangzhou 225009, China
| | - Guangqing Liu
- Institute of Agricultural Sciences for Lixiahe Region in Jiangsu, Yangzhou 225009, China
| | - Changhai Zhou
- Institute of Agricultural Sciences for Lixiahe Region in Jiangsu, Yangzhou 225009, China
| | - Min Jiang
- Institute of Agricultural Sciences for Lixiahe Region in Jiangsu, Yangzhou 225009, China
- Jiangsu Collaborative Innovation Center for Modern Crop Production, Nanjing 210095, China
- National Rice Industry Technology System of Yangzhou Comprehensive Experimental Station, Yangzhou, Jiangsu Province, 225009, China
| | - Niansheng Huang
- Institute of Agricultural Sciences for Lixiahe Region in Jiangsu, Yangzhou 225009, China
- Jiangsu Collaborative Innovation Center for Modern Crop Production, Nanjing 210095, China
- National Rice Industry Technology System of Yangzhou Comprehensive Experimental Station, Yangzhou, Jiangsu Province, 225009, China
| | - Zhengyuan Dai
- Institute of Agricultural Sciences for Lixiahe Region in Jiangsu, Yangzhou 225009, China
- Jiangsu Collaborative Innovation Center for Modern Crop Production, Nanjing 210095, China
- National Rice Industry Technology System of Yangzhou Comprehensive Experimental Station, Yangzhou, Jiangsu Province, 225009, China
| | - Chengzhi Liang
- Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China
| | - Zhou Chen
- Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China
- College of Life Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jianmin Chen
- Jiangsu Key Laboratories of Crop Genetics and Physiology and Plant Functional Genomics of the Ministry of Education, Co-Innovation Center for Modern Production Technology of Grain Crops of Jiangsu, Yangzhou University, Yangzhou 225009, China
| | - Aihong Li
- Institute of Agricultural Sciences for Lixiahe Region in Jiangsu, Yangzhou 225009, China
- Jiangsu Collaborative Innovation Center for Modern Crop Production, Nanjing 210095, China
- National Rice Industry Technology System of Yangzhou Comprehensive Experimental Station, Yangzhou, Jiangsu Province, 225009, China
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35
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De Vriese K, Costa A, Beeckman T, Vanneste S. Pharmacological Strategies for Manipulating Plant Ca 2+ Signalling. Int J Mol Sci 2018; 19:E1506. [PMID: 29783646 PMCID: PMC5983822 DOI: 10.3390/ijms19051506] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2018] [Revised: 05/10/2018] [Accepted: 05/12/2018] [Indexed: 11/20/2022] Open
Abstract
Calcium is one of the most pleiotropic second messengers in all living organisms. However, signalling specificity is encoded via spatio-temporally regulated signatures that act with surgical precision to elicit highly specific cellular responses. How this is brought about remains a big challenge in the plant field, in part due to a lack of specific tools to manipulate/interrogate the plant Ca2+ toolkit. In many cases, researchers resort to tools that were optimized in animal cells. However, the obviously large evolutionary distance between plants and animals implies that there is a good chance observed effects may not be specific to the intended plant target. Here, we provide an overview of pharmacological strategies that are commonly used to activate or inhibit plant Ca2+ signalling. We focus on highlighting modes of action where possible, and warn for potential pitfalls. Together, this review aims at guiding plant researchers through the Ca2+ pharmacology swamp.
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Affiliation(s)
- Kjell De Vriese
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Technologiepark 927, 9052 Ghent, Belgium.
- VIB Center for Plant Systems Biology, VIB, Technologiepark 927, 9052 Ghent, Belgium.
| | - Alex Costa
- Department of Biosciences, University of Milan, 20133 Milan, Italy.
- Instititute of Biophysics, Consiglio Nazionale delle Ricerche, 20133 Milan, Italy.
| | - Tom Beeckman
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Technologiepark 927, 9052 Ghent, Belgium.
- VIB Center for Plant Systems Biology, VIB, Technologiepark 927, 9052 Ghent, Belgium.
| | - Steffen Vanneste
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Technologiepark 927, 9052 Ghent, Belgium.
- VIB Center for Plant Systems Biology, VIB, Technologiepark 927, 9052 Ghent, Belgium.
- Lab of Plant Growth Analysis, Ghent University Global Campus, Songdomunhwa-Ro, 119, Yeonsu-gu, Incheon 21985, Korea.
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Martins V, Carneiro F, Conde C, Sottomayor M, Gerós H. The grapevine VvCAX3 is a cation/H + exchanger involved in vacuolar Ca 2+ homeostasis. PLANTA 2017; 246:1083-1096. [PMID: 28801786 DOI: 10.1007/s00425-017-2754-0] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2017] [Accepted: 08/03/2017] [Indexed: 05/05/2023]
Abstract
The grapevine VvCAX3 mediates calcium transport in the vacuole and is mostly expressed in green grape berries and upregulated by Ca 2+ , Na + and methyl jasmonate. Calcium is an essential plant nutrient with important regulatory and structural roles in the berries of grapevine (Vitis vinifera L.). On the other hand, the proton-cation exchanger CAX proteins have been shown to impact Ca2+ homeostasis with important consequences for fruit integrity and resistance to biotic/abiotic stress. Here, the CAX gene found in transcriptomic databases as having one of the highest expressions in grapevine tissues, VvCAX3, was cloned and functionally characterized. Heterologous expression in yeast showed that a truncated version of VvCAX3 lacking its NNR autoinhibitory domain (sCAX3) restored the ability of the yeast strain to grow in 100-200 mM Ca2+, demonstrating a role in Ca2+ transport. The truncated VvCAX3 was further shown to be involved in the transport of Na+, Li+, Mn2+ and Cu2+ in yeast cells. Subcellular localization studies using fluorescently tagged proteins confirmed VvCAX3 as a tonoplast transporter. VvCAX3 is expressed in grapevine stems, leaves, roots, and berries, especially at pea size, decreasing gradually throughout development, in parallel with the pattern of calcium accumulation in the fruit. The transcript abundance of VvCAX3 was shown to be regulated by methyl jasmonate (MeJA), Ca2+, and Na+ in grape cell suspensions, and the VvCAX3 promotor contains several predicted cis-acting elements related to developmental and stress response processes. As a whole, the results obtained add new insights on the mechanisms involved in calcium homeostasis and intracellular compartmentation in grapevine, and indicate that VvCAX3 may be an interesting target towards the development of strategies for enhancement of grape berry properties.
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Affiliation(s)
- Viviana Martins
- Centro de Investigação e de Tecnologias Agro-ambientais e Biológicas, CITAB-UMinho Pole, Departamento de Biologia, Escola de Ciências, Universidade do Minho, Braga, Portugal.
| | - Filipa Carneiro
- Centro de Investigação e de Tecnologias Agro-ambientais e Biológicas, CITAB-UMinho Pole, Departamento de Biologia, Escola de Ciências, Universidade do Minho, Braga, Portugal
| | - Carlos Conde
- i3S-Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal
- IBMC, Instituto de Biologia Molecular e Celular, Universidade do Porto, Porto, Portugal
| | - Mariana Sottomayor
- CIBIO-InBIO, Universidade do Porto, Campus de Vairão, Rua Padre Armando Quintas, Vairão, Portugal
- Departamento de Biologia, Faculdade de Ciências, Universidade do Porto, Porto, Portugal
| | - Hernâni Gerós
- Centro de Investigação e de Tecnologias Agro-ambientais e Biológicas, CITAB-UMinho Pole, Departamento de Biologia, Escola de Ciências, Universidade do Minho, Braga, Portugal
- Centro de Biologia Molecular e Ambiental (CBMA), Departamento de Biologia, Escola de Ciências, Universidade do Minho, Braga, Portugal
- Centro de Engenharia Biológica (CEB), Universidade do Minho, Braga, Portugal
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Carrasco-López C, Hernández-Verdeja T, Perea-Resa C, Abia D, Catalá R, Salinas J. Environment-dependent regulation of spliceosome activity by the LSM2-8 complex in Arabidopsis. Nucleic Acids Res 2017; 45:7416-7431. [PMID: 28482101 PMCID: PMC5499552 DOI: 10.1093/nar/gkx375] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2016] [Accepted: 04/25/2017] [Indexed: 11/20/2022] Open
Abstract
Spliceosome activity is tightly regulated to ensure adequate splicing in response to internal and external cues. It has been suggested that core components of the spliceosome, such as the snRNPs, would participate in the control of its activity. The experimental indications supporting this proposition, however, remain scarce, and the operating mechanisms poorly understood. Here, we present genetic and molecular evidence demonstrating that the LSM2–8 complex, the protein moiety of the U6 snRNP, regulates the spliceosome activity in Arabidopsis, and that this regulation is controlled by the environmental conditions. Our results show that the complex ensures the efficiency and accuracy of constitutive and alternative splicing of selected pre-mRNAs, depending on the conditions. Moreover, miss-splicing of most targeted pre-mRNAs leads to the generation of nonsense mediated decay signatures, indicating that the LSM2–8 complex also guarantees adequate levels of the corresponding functional transcripts. Interestingly, the selective role of the complex has relevant physiological implications since it is required for adequate plant adaptation to abiotic stresses. These findings unveil an unanticipated function for the LSM2–8 complex that represents a new layer of posttranscriptional regulation in response to external stimuli in eukaryotes.
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Affiliation(s)
- Cristian Carrasco-López
- Departamento de Biología Medioambiental, Centro de Investigaciones Biológicas, CSIC, 28040 Madrid, Spain
| | - Tamara Hernández-Verdeja
- Departamento de Biología Medioambiental, Centro de Investigaciones Biológicas, CSIC, 28040 Madrid, Spain
| | - Carlos Perea-Resa
- Departamento de Biología Medioambiental, Centro de Investigaciones Biológicas, CSIC, 28040 Madrid, Spain
| | - David Abia
- Unidad de Bioinformática, Centro de Biología Molecular Severo Ochoa, CSIC, 28049 Madrid, Spain
| | - Rafael Catalá
- Departamento de Biología Medioambiental, Centro de Investigaciones Biológicas, CSIC, 28040 Madrid, Spain
| | - Julio Salinas
- Departamento de Biología Medioambiental, Centro de Investigaciones Biológicas, CSIC, 28040 Madrid, Spain
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38
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Hocking B, Conn SJ, Manohar M, Xu B, Athman A, Stancombe MA, Webb AR, Hirschi KD, Gilliham M. Heterodimerization of Arabidopsis calcium/proton exchangers contributes to regulation of guard cell dynamics and plant defense responses. JOURNAL OF EXPERIMENTAL BOTANY 2017; 68:4171-4183. [PMID: 28645169 PMCID: PMC5853972 DOI: 10.1093/jxb/erx209] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2016] [Accepted: 06/02/2017] [Indexed: 05/19/2023]
Abstract
Arabidopsis thaliana cation exchangers (CAX1 and CAX3) are closely related tonoplast-localized calcium/proton (Ca2+/H+) antiporters that contribute to cellular Ca2+ homeostasis. CAX1 and CAX3 were previously shown to interact in yeast; however, the function of this complex in plants has remained elusive. Here, we demonstrate that expression of CAX1 and CAX3 occurs in guard cells. Additionally, CAX1 and CAX3 are co-expressed in mesophyll tissue in response to wounding or flg22 treatment, due to the induction of CAX3 expression. Having shown that the transporters can be co-expressed in the same cells, we demonstrate that CAX1 and CAX3 can form homomeric and heteromeric complexes in plants. Consistent with the formation of a functional CAX1-CAX3 complex, CAX1 and CAX3 integrated into the yeast genome suppressed a Ca2+-hypersensitive phenotype of mutants defective in vacuolar Ca2+ transport, and demonstrated enzyme kinetics different from those of either CAX protein expressed by itself. We demonstrate that the interactions between CAX proteins contribute to the functioning of stomata, because stomata were more closed in cax1-1, cax3-1, and cax1-1/cax3-1 loss-of-function mutants due to an inability to buffer Ca2+ effectively. We hypothesize that the formation of CAX1-CAX3 complexes may occur in the mesophyll to affect intracellular Ca2+ signaling during defense responses.
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Affiliation(s)
- Bradleigh Hocking
- Waite Research Institute and School of Agriculture, Food and Wine, University of Adelaide, Glen Osmond, SA, Australia
- ARC Centre of Excellence in Plant Energy Biology, University of Adelaide, Glen Osmond, SA, Australia
| | - Simon J Conn
- Waite Research Institute and School of Agriculture, Food and Wine, University of Adelaide, Glen Osmond, SA, Australia
| | - Murli Manohar
- US Department of Agriculture/Agricultural Research Service, Children’s Nutrition Research Center, Baylor College of Medicine, Houston, TX, USA
| | - Bo Xu
- Waite Research Institute and School of Agriculture, Food and Wine, University of Adelaide, Glen Osmond, SA, Australia
- ARC Centre of Excellence in Plant Energy Biology, University of Adelaide, Glen Osmond, SA, Australia
| | - Asmini Athman
- Waite Research Institute and School of Agriculture, Food and Wine, University of Adelaide, Glen Osmond, SA, Australia
- ARC Centre of Excellence in Plant Energy Biology, University of Adelaide, Glen Osmond, SA, Australia
| | | | - Alex R Webb
- Department of Plant Sciences, University of Cambridge, Cambridge, UK
| | - Kendal D Hirschi
- US Department of Agriculture/Agricultural Research Service, Children’s Nutrition Research Center, Baylor College of Medicine, Houston, TX, USA
- Correspondence: ;
| | - Matthew Gilliham
- Waite Research Institute and School of Agriculture, Food and Wine, University of Adelaide, Glen Osmond, SA, Australia
- ARC Centre of Excellence in Plant Energy Biology, University of Adelaide, Glen Osmond, SA, Australia
- Correspondence: ;
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39
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Feng Y, Yin Y, Fei S. BdVRN1 Expression Confers Flowering Competency and Is Negatively Correlated with Freezing Tolerance in Brachypodium distachyon. FRONTIERS IN PLANT SCIENCE 2017; 8:1107. [PMID: 28690631 PMCID: PMC5479923 DOI: 10.3389/fpls.2017.01107] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/05/2017] [Accepted: 06/07/2017] [Indexed: 05/22/2023]
Abstract
Vernalization is an essential process by which many temperate plant species acquire competence for flowering. Brachypodium distachyon is a model plant for temperate grasses including many cool-season forage and turfgrasses and cereals. Grasses with spring growth habit do not require vernalization for flowering and are typically less winter hardy. Yet the connection between vernalization and freezing tolerance remain unclear. The diverse requirement of vernalization for flowering makes it an ideal choice for studying the relationship between vernalization and freezing tolerance. Here, we isolated and analyzed the spatial and temporal expression patterns of two vernalization related homologous genes, BdVRN1 and BdVRN3 in Bd21, a non-vernalization-requiring accession, and Bd29-1, an accession shown to be vernalization-requiring. We showed that expression of BdVRN1 and BdVRN3 is independent of vernalization in Bd21, but is vernalization dependent in Bd29-1. Moreover, vernalization-induced expression of BdVRN1 appears to precede that of BdVRN3 in Bd29-1. Bd21 RNAi knockdown mutants for BdVRN1 conferred vernalization requirement for flowering, and reduced the expression of BdVRN3. Both Bd29-1 and the BdVRN1 RNAi mutants of Bd21 exhibited reduced freezing tolerance upon vernalization treatment. Cold-responsive genes BdCBF2, BdCBF3, BdCBF5, BdCBF6, and BdDREB2A were all constitutively expressed at a high level in the BdVRN1 RNAi mutants of Bd21. Taken together, our results suggest that expression of BdVRN1 promotes flowering by upregulating BdVRN3, and gaining the competency for flowering reduces freezing tolerance in Brachypodium.
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Affiliation(s)
- Ying Feng
- Interdepartmental Graduate Major in Genetics and Genomics, Iowa State University, AmesIA, United States
| | - Yanhai Yin
- Interdepartmental Graduate Major in Genetics and Genomics, Iowa State University, AmesIA, United States
- Department of Genetics, Development, and Cell Biology, Iowa State University, AmesIA, United States
| | - Shuizhang Fei
- Interdepartmental Graduate Major in Genetics and Genomics, Iowa State University, AmesIA, United States
- Department of Horticulture, Iowa State University, AmesIA, United States
- *Correspondence: Shuizhang Fei,
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40
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Zhou M, Li W, Zheng Y, Lin P, Yao X, Lin J. CbRCI35, a Cold Responsive Peroxidase from Capsella bursa-pastoris Regulates Reactive Oxygen Species Homeostasis and Enhances Cold Tolerance in Tobacco. FRONTIERS IN PLANT SCIENCE 2016; 7:1599. [PMID: 27818675 PMCID: PMC5073210 DOI: 10.3389/fpls.2016.01599] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2016] [Accepted: 10/10/2016] [Indexed: 05/09/2023]
Abstract
Low temperature affects gene regulatory networks and alters cellular metabolism to inhibit plant growth. Peroxidases are widely distributed in plants and play a large role in adjusting and controlling reactive oxygen species (ROS) homeostasis in response to abiotic stresses such as low temperature. The Rare Cold-Inducible 35 gene from Capsella bursa-pastoris (CbRCI35) belongs to the type III peroxidase family and has been reported to be a cold responsive gene in plants. Here we performed an expressional characterization of CbRCI35 under cold and ionic liquid treatments. The promoter of CbRCI35 was also cloned and its activity was examined using the GUS reporter system. CbRCI35 protein was localized in the cytoplasm according to sequence prediction and GFP fusion assay. Heterologous expression tests revealed that CbRCI35 conferred enhanced resistance to low temperature and activated endogenous cold responsive signaling in tobacco. Furthermore, in the normal condition the ROS accumulation was moderately enhanced while after chilling exposure superoxide dismutase activity was increased in CbRCI53 transgenic plants. The ROS metabolism related genes expression was altered accordingly. We conclude that CbRCI35 modulates ROS homeostasis and contributes to cold tolerance in plants.
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Affiliation(s)
- Mingqi Zhou
- State Key Laboratory of Genetic Engineering, Institute of Plant Biology, School of Life Sciences, Fudan UniversityShanghai, China
| | - Weiwei Li
- State Key Laboratory of Genetic Engineering, Institute of Plant Biology, School of Life Sciences, Fudan UniversityShanghai, China
| | - Ye Zheng
- State Key Laboratory of Genetic Engineering, Institute of Plant Biology, School of Life Sciences, Fudan UniversityShanghai, China
| | - Ping Lin
- Research Institute of Subtropical Forestry, Chinese Academy of ForestryFuyang, China
| | - Xiaohua Yao
- Research Institute of Subtropical Forestry, Chinese Academy of ForestryFuyang, China
| | - Juan Lin
- State Key Laboratory of Genetic Engineering, Institute of Plant Biology, School of Life Sciences, Fudan UniversityShanghai, China
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Zhang Z, Hu X, Zhang Y, Miao Z, Xie C, Meng X, Deng J, Wen J, Mysore KS, Frugier F, Wang T, Dong J. Opposing Control by Transcription Factors MYB61 and MYB3 Increases Freezing Tolerance by Relieving C-Repeat Binding Factor Suppression. PLANT PHYSIOLOGY 2016; 172:1306-1323. [PMID: 27578551 PMCID: PMC5047070 DOI: 10.1104/pp.16.00051] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/13/2016] [Accepted: 08/29/2016] [Indexed: 05/07/2023]
Abstract
Cold acclimation is an important process by which plants respond to low temperature and enhance their winter hardiness. C-REPEAT BINDING FACTOR1 (CBF1), CBF2, and CBF3 genes were shown previously to participate in cold acclimation in Medicago truncatula In addition, MtCBF4 is transcriptionally induced by salt, drought, and cold stresses. We show here that MtCBF4, shown previously to enhance drought and salt tolerance, also positively regulates cold acclimation and freezing tolerance. To identify molecular factors acting upstream and downstream of the MtCBF4 transcription factor (TF) in cold responses, we first identified genes that are differentially regulated upon MtCBF4 overexpression using RNAseq Digital Gene Expression Profiling. Among these, we showed that MtCBF4 directly activates the transcription of the COLD ACCLIMATION SPECIFIC15 (MtCAS15) gene. To gain insights into how MtCBF4 is transcriptionally regulated in response to cold, an R2R3-MYB TF, MtMYB3, was identified based on a yeast one-hybrid screen as binding directly to MYB cis-elements in the MtCBF4 promoter, leading to the inhibition of MtCBF4 expression. In addition, another MYB TF, MtMYB61, identified as an interactor of MtMYB3, can relieve the inhibitory effect of MtMYB3 on MtCBF4 transcription. This study, therefore, supports a model describing how MtCBF4 is regulated by antagonistic MtMYB3/MtMYB61 TFs, leading to the up-regulation of downstream targets such as MtCAS15 acting in cold acclimation in M. truncatula.
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Affiliation(s)
- Zhenqian Zhang
- State Key Laboratory of Agrobiotechnology, College of Biological Sciences, China Agricultural University, Beijing 100193, China (Z.Z., X.H., Y.Z., Z.M. C.X., X.M., J.D., T.W., J.D.);Plant Biology Division, Samuel Roberts Noble Foundation, Ardmore, Oklahoma 73401 (J.W., K.S.M.); andInstitute of Plant Sciences Paris-Saclay, Centre National de la Recherche Scientifique, Institut National de la Recherche Agronomique, Universite Paris-Sud, Universite Paris-Diderot, Universite d'Evry, Universite Paris-Saclay, Gif-sur-Yvette 91190, France (F.F.)
| | - Xiaona Hu
- State Key Laboratory of Agrobiotechnology, College of Biological Sciences, China Agricultural University, Beijing 100193, China (Z.Z., X.H., Y.Z., Z.M. C.X., X.M., J.D., T.W., J.D.);Plant Biology Division, Samuel Roberts Noble Foundation, Ardmore, Oklahoma 73401 (J.W., K.S.M.); andInstitute of Plant Sciences Paris-Saclay, Centre National de la Recherche Scientifique, Institut National de la Recherche Agronomique, Universite Paris-Sud, Universite Paris-Diderot, Universite d'Evry, Universite Paris-Saclay, Gif-sur-Yvette 91190, France (F.F.)
| | - Yunqin Zhang
- State Key Laboratory of Agrobiotechnology, College of Biological Sciences, China Agricultural University, Beijing 100193, China (Z.Z., X.H., Y.Z., Z.M. C.X., X.M., J.D., T.W., J.D.);Plant Biology Division, Samuel Roberts Noble Foundation, Ardmore, Oklahoma 73401 (J.W., K.S.M.); andInstitute of Plant Sciences Paris-Saclay, Centre National de la Recherche Scientifique, Institut National de la Recherche Agronomique, Universite Paris-Sud, Universite Paris-Diderot, Universite d'Evry, Universite Paris-Saclay, Gif-sur-Yvette 91190, France (F.F.)
| | - Zhenyan Miao
- State Key Laboratory of Agrobiotechnology, College of Biological Sciences, China Agricultural University, Beijing 100193, China (Z.Z., X.H., Y.Z., Z.M. C.X., X.M., J.D., T.W., J.D.);Plant Biology Division, Samuel Roberts Noble Foundation, Ardmore, Oklahoma 73401 (J.W., K.S.M.); andInstitute of Plant Sciences Paris-Saclay, Centre National de la Recherche Scientifique, Institut National de la Recherche Agronomique, Universite Paris-Sud, Universite Paris-Diderot, Universite d'Evry, Universite Paris-Saclay, Gif-sur-Yvette 91190, France (F.F.)
| | - Can Xie
- State Key Laboratory of Agrobiotechnology, College of Biological Sciences, China Agricultural University, Beijing 100193, China (Z.Z., X.H., Y.Z., Z.M. C.X., X.M., J.D., T.W., J.D.);Plant Biology Division, Samuel Roberts Noble Foundation, Ardmore, Oklahoma 73401 (J.W., K.S.M.); andInstitute of Plant Sciences Paris-Saclay, Centre National de la Recherche Scientifique, Institut National de la Recherche Agronomique, Universite Paris-Sud, Universite Paris-Diderot, Universite d'Evry, Universite Paris-Saclay, Gif-sur-Yvette 91190, France (F.F.)
| | - Xiangzhao Meng
- State Key Laboratory of Agrobiotechnology, College of Biological Sciences, China Agricultural University, Beijing 100193, China (Z.Z., X.H., Y.Z., Z.M. C.X., X.M., J.D., T.W., J.D.);Plant Biology Division, Samuel Roberts Noble Foundation, Ardmore, Oklahoma 73401 (J.W., K.S.M.); andInstitute of Plant Sciences Paris-Saclay, Centre National de la Recherche Scientifique, Institut National de la Recherche Agronomique, Universite Paris-Sud, Universite Paris-Diderot, Universite d'Evry, Universite Paris-Saclay, Gif-sur-Yvette 91190, France (F.F.)
| | - Jie Deng
- State Key Laboratory of Agrobiotechnology, College of Biological Sciences, China Agricultural University, Beijing 100193, China (Z.Z., X.H., Y.Z., Z.M. C.X., X.M., J.D., T.W., J.D.);Plant Biology Division, Samuel Roberts Noble Foundation, Ardmore, Oklahoma 73401 (J.W., K.S.M.); andInstitute of Plant Sciences Paris-Saclay, Centre National de la Recherche Scientifique, Institut National de la Recherche Agronomique, Universite Paris-Sud, Universite Paris-Diderot, Universite d'Evry, Universite Paris-Saclay, Gif-sur-Yvette 91190, France (F.F.)
| | - Jiangqi Wen
- State Key Laboratory of Agrobiotechnology, College of Biological Sciences, China Agricultural University, Beijing 100193, China (Z.Z., X.H., Y.Z., Z.M. C.X., X.M., J.D., T.W., J.D.);Plant Biology Division, Samuel Roberts Noble Foundation, Ardmore, Oklahoma 73401 (J.W., K.S.M.); andInstitute of Plant Sciences Paris-Saclay, Centre National de la Recherche Scientifique, Institut National de la Recherche Agronomique, Universite Paris-Sud, Universite Paris-Diderot, Universite d'Evry, Universite Paris-Saclay, Gif-sur-Yvette 91190, France (F.F.)
| | - Kirankumar S Mysore
- State Key Laboratory of Agrobiotechnology, College of Biological Sciences, China Agricultural University, Beijing 100193, China (Z.Z., X.H., Y.Z., Z.M. C.X., X.M., J.D., T.W., J.D.);Plant Biology Division, Samuel Roberts Noble Foundation, Ardmore, Oklahoma 73401 (J.W., K.S.M.); andInstitute of Plant Sciences Paris-Saclay, Centre National de la Recherche Scientifique, Institut National de la Recherche Agronomique, Universite Paris-Sud, Universite Paris-Diderot, Universite d'Evry, Universite Paris-Saclay, Gif-sur-Yvette 91190, France (F.F.)
| | - Florian Frugier
- State Key Laboratory of Agrobiotechnology, College of Biological Sciences, China Agricultural University, Beijing 100193, China (Z.Z., X.H., Y.Z., Z.M. C.X., X.M., J.D., T.W., J.D.);Plant Biology Division, Samuel Roberts Noble Foundation, Ardmore, Oklahoma 73401 (J.W., K.S.M.); andInstitute of Plant Sciences Paris-Saclay, Centre National de la Recherche Scientifique, Institut National de la Recherche Agronomique, Universite Paris-Sud, Universite Paris-Diderot, Universite d'Evry, Universite Paris-Saclay, Gif-sur-Yvette 91190, France (F.F.)
| | - Tao Wang
- State Key Laboratory of Agrobiotechnology, College of Biological Sciences, China Agricultural University, Beijing 100193, China (Z.Z., X.H., Y.Z., Z.M. C.X., X.M., J.D., T.W., J.D.);Plant Biology Division, Samuel Roberts Noble Foundation, Ardmore, Oklahoma 73401 (J.W., K.S.M.); andInstitute of Plant Sciences Paris-Saclay, Centre National de la Recherche Scientifique, Institut National de la Recherche Agronomique, Universite Paris-Sud, Universite Paris-Diderot, Universite d'Evry, Universite Paris-Saclay, Gif-sur-Yvette 91190, France (F.F.)
| | - Jiangli Dong
- State Key Laboratory of Agrobiotechnology, College of Biological Sciences, China Agricultural University, Beijing 100193, China (Z.Z., X.H., Y.Z., Z.M. C.X., X.M., J.D., T.W., J.D.);Plant Biology Division, Samuel Roberts Noble Foundation, Ardmore, Oklahoma 73401 (J.W., K.S.M.); andInstitute of Plant Sciences Paris-Saclay, Centre National de la Recherche Scientifique, Institut National de la Recherche Agronomique, Universite Paris-Sud, Universite Paris-Diderot, Universite d'Evry, Universite Paris-Saclay, Gif-sur-Yvette 91190, France (F.F.)
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Pittman JK, Hirschi KD. CAX-ing a wide net: Cation/H(+) transporters in metal remediation and abiotic stress signalling. PLANT BIOLOGY (STUTTGART, GERMANY) 2016; 18:741-9. [PMID: 27061644 PMCID: PMC4982074 DOI: 10.1111/plb.12460] [Citation(s) in RCA: 79] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/2016] [Accepted: 04/04/2016] [Indexed: 05/19/2023]
Abstract
Cation/proton exchangers (CAXs) are a class of secondary energised ion transporter that are being implicated in an increasing range of cellular and physiological functions. CAXs are primarily Ca(2+) efflux transporters that mediate the sequestration of Ca(2+) from the cytosol, usually into the vacuole. Some CAX isoforms have broad substrate specificity, providing the ability to transport trace metal ions such as Mn(2+) and Cd(2+) , as well as Ca(2+) . In recent years, genomic analyses have begun to uncover the expansion of CAXs within the green lineage and their presence within non-plant species. Although there appears to be significant conservation in tertiary structure of CAX proteins, there is diversity in function of CAXs between species and individual isoforms. For example, in halophytic plants, CAXs have been recruited to play a role in salt tolerance, while in metal hyperaccumulator plants CAXs are implicated in cadmium transport and tolerance. CAX proteins are involved in various abiotic stress response pathways, in some cases as a modulator of cytosolic Ca(2+) signalling, but in some situations there is evidence of CAXs acting as a pH regulator. The metal transport and abiotic stress tolerance functions of CAXs make them attractive targets for biotechnology, whether to provide mineral nutrient biofortification or toxic metal bioremediation. The study of non-plant CAXs may also provide insight into both conserved and novel transport mechanisms and functions.
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Affiliation(s)
- J. K. Pittman
- Faculty of Life SciencesUniversity of ManchesterManchesterUK
| | - K. D. Hirschi
- United States Department of Agriculture/Agricultural Research Service Children's Nutrition Research CenterBaylor College of MedicineHoustonTXUSA
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Wilkins KA, Matthus E, Swarbreck SM, Davies JM. Calcium-Mediated Abiotic Stress Signaling in Roots. FRONTIERS IN PLANT SCIENCE 2016; 7:1296. [PMID: 27621742 PMCID: PMC5002411 DOI: 10.3389/fpls.2016.01296] [Citation(s) in RCA: 84] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2016] [Accepted: 08/12/2016] [Indexed: 05/20/2023]
Abstract
Roots are subjected to a range of abiotic stresses as they forage for water and nutrients. Cytosolic free calcium is a common second messenger in the signaling of abiotic stress. In addition, roots take up calcium both as a nutrient and to stimulate exocytosis in growth. For calcium to fulfill its multiple roles must require strict spatio-temporal regulation of its uptake and efflux across the plasma membrane, its buffering in the cytosol and its sequestration or release from internal stores. This prompts the question of how specificity of signaling output can be achieved against the background of calcium's other uses. Threats to agriculture such as salinity, water availability and hypoxia are signaled through calcium. Nutrient deficiency is also emerging as a stress that is signaled through cytosolic free calcium, with progress in potassium, nitrate and boron deficiency signaling now being made. Heavy metals have the capacity to trigger or modulate root calcium signaling depending on their dose and their capacity to catalyze production of hydroxyl radicals. Mechanical stress and cold stress can both trigger an increase in root cytosolic free calcium, with the possibility of membrane deformation playing a part in initiating the calcium signal. This review addresses progress in identifying the calcium transporting proteins (particularly channels such as annexins and cyclic nucleotide-gated channels) that effect stress-induced calcium increases in roots and explores links to reactive oxygen species, lipid signaling, and the unfolded protein response.
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Affiliation(s)
| | | | | | - Julia M. Davies
- Department of Plant Sciences, University of CambridgeCambridge, UK
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44
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Wang X, Shan X, Xue C, Wu Y, Su S, Li S, Liu H, Jiang Y, Zhang Y, Yuan Y. Isolation and functional characterization of a cold responsive phosphatidylinositol transfer-associated protein, ZmSEC14p, from maize (Zea may L.). PLANT CELL REPORTS 2016; 35:1671-86. [PMID: 27061906 DOI: 10.1007/s00299-016-1980-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2016] [Accepted: 03/31/2016] [Indexed: 05/10/2023]
Abstract
A Sec14-like protein, ZmSEC14p , from maize was structurally analyzed and functionally tested. Overexpression of ZmSEC14p in transgenic Arabidopsis conferred tolerance to cold stress. Sec14-like proteins are involved in essential biological processes, such as phospholipid metabolism, signal transduction, membrane trafficking, and stress response. Here, we reported a phosphatidylinositol transfer-associated protein, ZmSEC14p (accession no. KT932998), isolated from a cold-tolerant maize inbred line using the cDNA-AFLP approach and RACE-PCR method. Full-length cDNA that consisted of a single open reading frame (ORF) encoded a putative polypeptide of 295 amino acids. The ZmSEC14p protein was mainly localized in the nucleus, and its transcript was induced by cold, salt stresses, and abscisic acid (ABA) treatment in maize leaves and roots. Overexpression of ZmSEC14p in transgenic Arabidopsis conferred tolerance to cold stress. This tolerance was primarily displayed by the increased germination rate, root length, plant survival rate, accumulation of proline, activities of antioxidant enzymes, and the reduction of oxidative damage by reactive oxygen species (ROS). ZmSEC14p overexpression regulated the expression of phosphoinositide-specific phospholipase C, which cleaves phosphatidylinositol 4,5-bisphosphate (PIP2) and generates second messengers (inositol 1,4,5-trisphosphate and 1,2-diacylglycerol) in the phosphoinositide signal transduction pathways. Moreover, up-regulation of some stress-responsive genes such as CBF3, COR6.6, and RD29B in transgenic plants under cold stress could be a possible mechanism for enhancing cold tolerance. Taken together, this study strongly suggests that ZmSEC14p plays an important role in plant tolerance to cold stress.
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Affiliation(s)
- Xiaoyu Wang
- College of Plant Science, Jilin University, Changchun, 130062, China
| | - Xiaohui Shan
- College of Plant Science, Jilin University, Changchun, 130062, China
| | - Chunmei Xue
- College of Plant Science, Jilin University, Changchun, 130062, China
| | - Ying Wu
- College of Plant Science, Jilin University, Changchun, 130062, China
| | - Shengzhong Su
- College of Plant Science, Jilin University, Changchun, 130062, China
| | - Shipeng Li
- College of Plant Science, Jilin University, Changchun, 130062, China
| | - Hongkui Liu
- College of Plant Science, Jilin University, Changchun, 130062, China
| | - Yuan Jiang
- College of Plant Science, Jilin University, Changchun, 130062, China
| | - Yanfei Zhang
- College of Plant Science, Jilin University, Changchun, 130062, China
| | - Yaping Yuan
- College of Plant Science, Jilin University, Changchun, 130062, China.
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45
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Zhang B, Qin Y, Han Y, Dong C, Li P, Shang Q. Comparative proteomic analysis reveals intracellular targets for bacillomycin L to induce Rhizoctonia solani Kühn hyphal cell death. BIOCHIMICA ET BIOPHYSICA ACTA-PROTEINS AND PROTEOMICS 2016; 1864:1152-1159. [PMID: 27267622 DOI: 10.1016/j.bbapap.2016.06.003] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/23/2015] [Revised: 04/29/2016] [Accepted: 06/02/2016] [Indexed: 10/21/2022]
Abstract
Bacillomycin L, a natural iturinic lipopeptide produced by Bacillus amyloliquefaciens, is characterized by strong antifungal activity against a variety of agronomically important filamentous fungi including Rhizoctonia solani Kühn. To further understand its antifungal actions, proteomes were comparatively studied within R. solani hyphal cells treated with or without bacillomycin L. The results show that 39 proteins were alternatively expressed within cells in response to this lipopeptide, which are involved in stress response, carbohydrate, amino acid and nucleotide metabolism, cellular component organization, calcium homeostasis, protein degradation, RNA processing, gene transcription, and others, suggesting that, in addition to inducing cell membrane permeabilization, iturin exhibits antibiotic activities by targeting intracellular molecules. Based on these results, a model of action of bacillomycin L against R. solani hyphal cells was proposed. Our study provides new insight into the antibiotic mechanisms of iturins.
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Affiliation(s)
- Bao Zhang
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China; Key Laboratory of Biology and Genetic Improvement of Horticultural Crops, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Yuxuan Qin
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China; Beijing Laboratory for Food Quality and Safety, China Agricultural University, Beijing 100083, China
| | - Yuzhu Han
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China
| | - Chunjuan Dong
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Pinglan Li
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China; Beijing Laboratory for Food Quality and Safety, China Agricultural University, Beijing 100083, China.
| | - Qingmao Shang
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing 100081, China.
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Wang F, Chen ZH, Liu X, Colmer TD, Zhou M, Shabala S. Tissue-specific root ion profiling reveals essential roles of the CAX and ACA calcium transport systems in response to hypoxia in Arabidopsis. JOURNAL OF EXPERIMENTAL BOTANY 2016; 67:3747-62. [PMID: 26889007 PMCID: PMC4896357 DOI: 10.1093/jxb/erw034] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
Waterlogging is a major abiotic stress that limits the growth of plants. The crucial role of Ca(2+) as a second messenger in response to abiotic and biotic stimuli has been widely recognized in plants. However, the physiological and molecular mechanisms of Ca(2+) distribution within specific cell types in different root zones under hypoxia is poorly understood. In this work, whole-plant physiological and tissue-specific Ca(2+) changes were studied using several ACA (Ca(2+)-ATPase) and CAX (Ca(2+)/proton exchanger) knock-out Arabidopsis mutants subjected to waterlogging treatment. In the wild-type (WT) plants, several days of hypoxia decreased the expression of ACA8, CAX4, and CAX11 by 33% and 50% compared with the control. The hypoxic treatment also resulted in an up to 11-fold tissue-dependent increase in Ca(2+) accumulation in root tissues as revealed by confocal microscopy. The increase was much higher in stelar cells in the mature zone of Arabidopsis mutants with loss of function for ACA8, ACA11, CAX4, and CAX11 In addition, a significantly increased Ca(2+) concentration was found in the cytosol of stelar cells in the mature zone after hypoxic treatment. Three weeks of waterlogging resulted in dramatic loss of shoot biomass in cax11 plants (67% loss in shoot dry weight), while in the WT and other transport mutants this decline was only 14-22%. These results were also consistent with a decline in leaf chlorophyll fluorescence (F v/F m). It is suggested that CAX11 plays a key role in maintaining cytosolic Ca(2+) homeostasis and/or signalling in root cells under hypoxic conditions.
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Affiliation(s)
- Feifei Wang
- School of Land and Food, University of Tasmania, Hobart, Tasmania 7001, Australia
| | - Zhong-Hua Chen
- School of Science and Health, Western Sydney University, Penrith NSW2751, Australia
| | - Xiaohui Liu
- School of Science and Health, Western Sydney University, Penrith NSW2751, Australia School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
| | - Timothy David Colmer
- School of Plant Biology and Institute of Agriculture, The University of Western Australia, Crawley, WA 6009, Australia
| | - Meixue Zhou
- School of Land and Food, University of Tasmania, Hobart, Tasmania 7001, Australia
| | - Sergey Shabala
- School of Land and Food, University of Tasmania, Hobart, Tasmania 7001, Australia
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Baliardini C, Meyer CL, Salis P, Saumitou-Laprade P, Verbruggen N. CATION EXCHANGER1 Cosegregates with Cadmium Tolerance in the Metal Hyperaccumulator Arabidopsis halleri and Plays a Role in Limiting Oxidative Stress in Arabidopsis Spp. PLANT PHYSIOLOGY 2015; 169:549-59. [PMID: 26162428 PMCID: PMC4577435 DOI: 10.1104/pp.15.01037] [Citation(s) in RCA: 77] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2015] [Accepted: 07/07/2015] [Indexed: 05/19/2023]
Abstract
Arabidopsis halleri is a model species for the study of plant adaptation to extreme metallic conditions. In this species, cadmium (Cd) tolerance seems to be constitutive, and the mechanisms underlying the trait are still poorly understood. A previous quantitative trait loci (QTL) analysis performed on A. halleri × Arabidopsis lyrata backcross population1 identified the metal-pump gene Heavy Metal ATPase4 as the major genetic determinant for Cd tolerance. However, although necessary, Heavy Metal ATPase4 alone is not sufficient for determining this trait. After fine mapping, a gene encoding a calcium(2+)/hydrogen(+) antiporter, cation/hydrogen(+) exchanger1 (CAX1), was identified as a candidate gene for the second QTL of Cd tolerance in A. halleri. Backcross population1 individuals displaying the A. halleri allele for the CAX1 locus exhibited significantly higher CAX1 expression levels compared with the ones with the A. lyrata allele, and a positive correlation between CAX1 expression and Cd tolerance was observed. Here, we show that this QTL is conditional and that it is only detectable at low external Ca concentration. CAX1 expression in both roots and shoots was higher in A. halleri than in the close Cd-sensitive relative species A. lyrata and Arabidopsis thaliana. Moreover, CAX1 loss of function in A. thaliana led to higher Cd sensitivity at low concentration of Ca, higher sensitivity to methylviologen, and stronger accumulation of reactive oxygen species after Cd treatment. Overall, this study identifies a unique genetic determinant of Cd tolerance in the metal hyperaccumulator A. halleri and offers a new twist for the function of CAX1 in plants.
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Affiliation(s)
- Cecilia Baliardini
- Laboratory of Plant Physiology and Molecular Genetics, Université Libre de Bruxelles, 1050 Brussels, Belgium (C.B., C.-L.M., P.S., N.V.); andLaboratoire Evolution, Ecologie, Paléontologie, Unité Mixte de Recherche Centre National de la Recherche Scientifique 8016, F-59655 Villeneuve d'Ascq cedex, France (P.S.-L.)
| | - Claire-Lise Meyer
- Laboratory of Plant Physiology and Molecular Genetics, Université Libre de Bruxelles, 1050 Brussels, Belgium (C.B., C.-L.M., P.S., N.V.); andLaboratoire Evolution, Ecologie, Paléontologie, Unité Mixte de Recherche Centre National de la Recherche Scientifique 8016, F-59655 Villeneuve d'Ascq cedex, France (P.S.-L.)
| | - Pietrino Salis
- Laboratory of Plant Physiology and Molecular Genetics, Université Libre de Bruxelles, 1050 Brussels, Belgium (C.B., C.-L.M., P.S., N.V.); andLaboratoire Evolution, Ecologie, Paléontologie, Unité Mixte de Recherche Centre National de la Recherche Scientifique 8016, F-59655 Villeneuve d'Ascq cedex, France (P.S.-L.)
| | - Pierre Saumitou-Laprade
- Laboratory of Plant Physiology and Molecular Genetics, Université Libre de Bruxelles, 1050 Brussels, Belgium (C.B., C.-L.M., P.S., N.V.); andLaboratoire Evolution, Ecologie, Paléontologie, Unité Mixte de Recherche Centre National de la Recherche Scientifique 8016, F-59655 Villeneuve d'Ascq cedex, France (P.S.-L.)
| | - Nathalie Verbruggen
- Laboratory of Plant Physiology and Molecular Genetics, Université Libre de Bruxelles, 1050 Brussels, Belgium (C.B., C.-L.M., P.S., N.V.); andLaboratoire Evolution, Ecologie, Paléontologie, Unité Mixte de Recherche Centre National de la Recherche Scientifique 8016, F-59655 Villeneuve d'Ascq cedex, France (P.S.-L.)
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48
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Feng Y, Yin Y, Fei S. Down-regulation of BdBRI1, a putative brassinosteroid receptor gene produces a dwarf phenotype with enhanced drought tolerance in Brachypodium distachyon. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2015; 234:163-73. [PMID: 25804819 DOI: 10.1016/j.plantsci.2015.02.015] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/03/2014] [Revised: 01/28/2015] [Accepted: 02/20/2015] [Indexed: 05/03/2023]
Abstract
Brassinosteroids (BRs) play important roles in plant growth, development and responses to a range of environmental cues. Although the mechanism of how BRs regulate growth and development is well-understood in Arabidopsis, the effect of BRs on stress tolerance, particularly drought tolerance remains unknown. We isolated a BRI1 (BRASSINOSTEROID INSENSITIVE 1) homologous gene, BdBRI1 from Brachypodium distachyon, a model for temperate grasses and cereals, created and characterized RNA interference (RNAi) knockdown mutants for BdBRI1 in Brachypodium. The loss-of-function BdBRI1-RNAi mutants exhibited reduced plant height, shortened internodes, narrow and short leaf, and reduced expression of BR signaling genes, BdBES1, BdBZR1, BdBLE2, and enhanced expression of BR biosynthesis genes BdD2, BdCPD and BdDWF4. More importantly, BdBRI1 RNAi mutants exhibited enhanced drought tolerance, accompanied by highly elevated expression of drought-responsive genes, BdP5CS, BdCOR47/BdRD17, together with BdERD1 and BdRD26, two putative targets of the transcription factors BES1 and BZR1 that are key components of the BR signaling pathway. Our results suggest that BR signaling and biosynthesis are largely conserved among Arabidopsis, rice and Brachypodium, and that BR signaling plays an important role in drought tolerance by directly regulating expression of key drought-responsive genes. The effect of BR biosynthesis or crosstalks between BR and other hormones or components of stress signaling pathways on drought tolerance is discussed.
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Affiliation(s)
- Ying Feng
- Interdepartmental Graduate Major in Genetics, Iowa State University, Ames, IA 50011, USA
| | - Yanhai Yin
- Interdepartmental Graduate Major in Genetics, Iowa State University, Ames, IA 50011, USA; Department of Genetics, Development and Cell Biology, Iowa State University, Ames, IA 50011, USA.
| | - Shuizhang Fei
- Interdepartmental Graduate Major in Genetics, Iowa State University, Ames, IA 50011, USA; Department of Horticulture, Iowa State University, Ames, IA 50011, USA.
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Leyva-Pérez MDLO, Valverde-Corredor A, Valderrama R, Jiménez-Ruiz J, Muñoz-Merida A, Trelles O, Barroso JB, Mercado-Blanco J, Luque F. Early and delayed long-term transcriptional changes and short-term transient responses during cold acclimation in olive leaves. DNA Res 2014; 22:1-11. [PMID: 25324298 PMCID: PMC4379972 DOI: 10.1093/dnares/dsu033] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
Abstract
Low temperature severely affects plant growth and development. To overcome this constraint, several plant species from regions having a cool season have evolved an adaptive response, called cold acclimation. We have studied this response in olive tree (Olea europaea L.) cv. Picual. Biochemical stress markers and cold-stress symptoms were detected after the first 24 h as sagging leaves. After 5 days, the plants were found to have completely recovered. Control and cold-stressed plants were sequenced by Illumina HiSeq 1000 paired-end technique. We also assembled a new olive transcriptome comprising 157,799 unigenes and found 6,309 unigenes differentially expressed in response to cold. Three types of response that led to cold acclimation were found: short-term transient response, early long-term response, and late long-term response. These subsets of unigenes were related to different biological processes. Early responses involved many cold-stress-responsive genes coding for, among many other things, C-repeat binding factor transcription factors, fatty acid desaturases, wax synthesis, and oligosaccharide metabolism. After long-term exposure to cold, a large proportion of gene down-regulation was found, including photosynthesis and plant growth genes. Up-regulated genes after long-term cold exposure were related to organelle fusion, nucleus organization, and DNA integration, including retrotransposons.
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Affiliation(s)
| | - Antonio Valverde-Corredor
- Departamento de Protección de Cultivos, Institute for Sustainable Agriculture (CSIC), Córdoba, Spain
| | - Raquel Valderrama
- Departamento de Biología Experimental, Universidad de Jaén, Jaén, Spain
| | | | - Antonio Muñoz-Merida
- Departamento de Arquitectura de Computadores, Universidad de Málaga, Málaga, Spain
| | - Oswaldo Trelles
- Departamento de Arquitectura de Computadores, Universidad de Málaga, Málaga, Spain
| | | | - Jesús Mercado-Blanco
- Departamento de Protección de Cultivos, Institute for Sustainable Agriculture (CSIC), Córdoba, Spain
| | - Francisco Luque
- Departamento de Biología Experimental, Universidad de Jaén, Jaén, Spain
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Graham NS, Hammond JP, Lysenko A, Mayes S, O Lochlainn S, Blasco B, Bowen HC, Rawlings CJ, Rios JJ, Welham S, Carion PWC, Dupuy LX, King GJ, White PJ, Broadley MR. Genetical and comparative genomics of Brassica under altered Ca supply identifies Arabidopsis Ca-transporter orthologs. THE PLANT CELL 2014; 26:2818-30. [PMID: 25082855 PMCID: PMC4145116 DOI: 10.1105/tpc.114.128603] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/09/2014] [Revised: 06/09/2014] [Accepted: 07/14/2014] [Indexed: 05/18/2023]
Abstract
Although Ca transport in plants is highly complex, the overexpression of vacuolar Ca(2+) transporters in crops is a promising new technology to improve dietary Ca supplies through biofortification. Here, we sought to identify novel targets for increasing plant Ca accumulation using genetical and comparative genomics. Expression quantitative trait locus (eQTL) mapping to 1895 cis- and 8015 trans-loci were identified in shoots of an inbred mapping population of Brassica rapa (IMB211 × R500); 23 cis- and 948 trans-eQTLs responded specifically to altered Ca supply. eQTLs were screened for functional significance using a large database of shoot Ca concentration phenotypes of Arabidopsis thaliana. From 31 Arabidopsis gene identifiers tagged to robust shoot Ca concentration phenotypes, 21 mapped to 27 B. rapa eQTLs, including orthologs of the Ca(2+) transporters At-CAX1 and At-ACA8. Two of three independent missense mutants of BraA.cax1a, isolated previously by targeting induced local lesions in genomes, have allele-specific shoot Ca concentration phenotypes compared with their segregating wild types. BraA.CAX1a is a promising target for altering the Ca composition of Brassica, consistent with prior knowledge from Arabidopsis. We conclude that multiple-environment eQTL analysis of complex crop genomes combined with comparative genomics is a powerful technique for novel gene identification/prioritization.
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Affiliation(s)
- Neil S Graham
- Plant and Crop Sciences Division, School of Biosciences, University of Nottingham, Sutton Bonington Campus, Loughborough LE12 5RD, United Kingdom
| | - John P Hammond
- School of Agriculture, Policy, and Development, University of Reading, Earley Gate, Whiteknights, Reading RG6 6AR, United Kingdom
| | - Artem Lysenko
- Computational and Systems Biology Department, Rothamsted Research, West Common, Harpenden AL5 2JQ, United Kingdom
| | - Sean Mayes
- Crops for the Future Research Centre, Jalan Broga, 43500 Semenyih, Selangor Darul Ehsan, Malaysia
| | - Seosamh O Lochlainn
- Plant and Crop Sciences Division, School of Biosciences, University of Nottingham, Sutton Bonington Campus, Loughborough LE12 5RD, United Kingdom
| | - Bego Blasco
- Plant and Crop Sciences Division, School of Biosciences, University of Nottingham, Sutton Bonington Campus, Loughborough LE12 5RD, United Kingdom
| | - Helen C Bowen
- Warwick HRI, University of Warwick, Wellesbourne CV35 9EF, United Kingdom
| | - Chris J Rawlings
- Computational and Systems Biology Department, Rothamsted Research, West Common, Harpenden AL5 2JQ, United Kingdom
| | - Juan J Rios
- Plant and Crop Sciences Division, School of Biosciences, University of Nottingham, Sutton Bonington Campus, Loughborough LE12 5RD, United Kingdom
| | - Susan Welham
- Computational and Systems Biology Department, Rothamsted Research, West Common, Harpenden AL5 2JQ, United Kingdom
| | - Pierre W C Carion
- Computational and Systems Biology Department, Rothamsted Research, West Common, Harpenden AL5 2JQ, United Kingdom
| | - Lionel X Dupuy
- James Hutton Institute, Invergowrie, Dundee DD2 5DA, United Kingdom
| | - Graham J King
- Southern Cross Plant Science, Southern Cross University, Lismore, New South Wales 2480, Australia
| | - Philip J White
- James Hutton Institute, Invergowrie, Dundee DD2 5DA, United Kingdom College of Science, King Saud University, Riyadh 11451, Kingdom of Saudi Arabia
| | - Martin R Broadley
- Plant and Crop Sciences Division, School of Biosciences, University of Nottingham, Sutton Bonington Campus, Loughborough LE12 5RD, United Kingdom
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