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Yan B, Zhang F, Wang M, Zhang Y, Fu S. Flexible wearable sensors for crop monitoring: a review. FRONTIERS IN PLANT SCIENCE 2024; 15:1406074. [PMID: 38867881 PMCID: PMC11167128 DOI: 10.3389/fpls.2024.1406074] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/24/2024] [Accepted: 05/07/2024] [Indexed: 06/14/2024]
Abstract
Crops were the main source of human food, which have met the increasingly diversified demand of consumers. Sensors were used to monitor crop phenotypes and environmental information in real time, which will provide a theoretical reference for optimizing crop growth environment, resisting biotic and abiotic stresses, and improve crop yield. Compared with non-contact monitoring methods such as optical imaging and remote sensing, wearable sensing technology had higher time and spatial resolution. However, the existing crop sensors were mainly rigid mechanical structures, which were easy to cause damage to crop organs, and there were still challenges in terms of accuracy and biosafety. Emerging flexible sensors had attracted wide attention in the field of crop phenotype monitoring due to their excellent mechanical properties and biocompatibility. The article introduced the key technologies involved in the preparation of flexible wearable sensors from the aspects of flexible preparation materials and advanced preparation processes. The monitoring function of flexible sensors in crop growth was highlighted, including the monitoring of crop nutrient, physiological, ecological and growth environment information. The monitoring principle, performance together with pros and cons of each sensor were analyzed. Furthermore, the future opportunities and challenges of flexible wearable devices in crop monitoring were discussed in detail from the aspects of new sensing theory, sensing materials, sensing structures, wireless power supply technology and agricultural sensor network, which will provide reference for smart agricultural management system based on crop flexible sensors, and realize efficient management of agricultural production and resources.
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Affiliation(s)
- Baoping Yan
- College of Agricultural Equipment Engineering, Henan University of Science and Technology, Luoyang, China
| | - Fu Zhang
- College of Agricultural Equipment Engineering, Henan University of Science and Technology, Luoyang, China
| | - Mengyao Wang
- College of Agricultural Equipment Engineering, Henan University of Science and Technology, Luoyang, China
| | - Yakun Zhang
- College of Agricultural Equipment Engineering, Henan University of Science and Technology, Luoyang, China
| | - Sanling Fu
- College of Physical Engineering, Henan University of Science and Technology, Luoyang, China
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Cui J, Sa E, Wei J, Fang Y, Zheng G, Wang Y, Wang X, Gong Y, Wu Z, Yao P, Liu Z. The Truncated Peptide AtPEP1 (9-23) Has the Same Function as AtPEP1 (1-23) in Inhibiting Primary Root Growth and Triggering of ROS Burst. Antioxidants (Basel) 2024; 13:549. [PMID: 38790654 PMCID: PMC11117541 DOI: 10.3390/antiox13050549] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2024] [Revised: 04/22/2024] [Accepted: 04/25/2024] [Indexed: 05/26/2024] Open
Abstract
Currently, the widely used active form of plant elicitor peptide 1 (PEP1) from Arabidopsis thaliana is composed of 23 amino acids, hereafter AtPEP1(1-23), serving as an immune elicitor. The relatively less conserved N-terminal region in AtPEP family indicates that the amino acids in this region may be unrelated to the function and activity of AtPEP peptides. Consequently, we conducted an investigation to determine the necessity of the nonconserved amino acids in AtPEP1(1-23) peptide for its functional properties. By assessing the primary root growth and the burst of reactive oxygen species (ROS), we discovered that the first eight N-terminal amino acids of AtPEP1(1-23) are not crucial for its functionality, whereas the conserved C-terminal aspartic acid plays a significant role in its functionality. In this study, we identified a truncated peptide, AtPEP1(9-23), which exhibits comparable activity to AtPEP1(1-23) in inhibiting primary root growth and inducing ROS burst. Additionally, the truncated peptide AtPEP1(13-23) shows similar ability to induce ROS burst as AtPEP1(1-23), but its inhibitory effect on primary roots is significantly reduced. These findings are significant as they provide a novel approach to explore and understand the functionality of the AtPEP1(1-23) peptide. Moreover, exogenous application of AtPEP1(13-23) may enhance plant resistance to pathogens without affecting their growth and development. Therefore, AtPEP1(13-23) holds promise for development as a potentially applicable biopesticides.
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Affiliation(s)
- Junmei Cui
- State Key Laboratory of Aridland Crop Science, Gansu Agricultural University, Lanzhou 730070, China; (J.C.); (E.S.); (J.W.); (Y.F.); (G.Z.); (Y.W.); (X.W.); (Y.G.); (Z.W.); (P.Y.)
| | - Ermei Sa
- State Key Laboratory of Aridland Crop Science, Gansu Agricultural University, Lanzhou 730070, China; (J.C.); (E.S.); (J.W.); (Y.F.); (G.Z.); (Y.W.); (X.W.); (Y.G.); (Z.W.); (P.Y.)
- College of Agronomy, Gansu Agricultural University, Lanzhou 730070, China
| | - Jiaping Wei
- State Key Laboratory of Aridland Crop Science, Gansu Agricultural University, Lanzhou 730070, China; (J.C.); (E.S.); (J.W.); (Y.F.); (G.Z.); (Y.W.); (X.W.); (Y.G.); (Z.W.); (P.Y.)
| | - Yan Fang
- State Key Laboratory of Aridland Crop Science, Gansu Agricultural University, Lanzhou 730070, China; (J.C.); (E.S.); (J.W.); (Y.F.); (G.Z.); (Y.W.); (X.W.); (Y.G.); (Z.W.); (P.Y.)
| | - Guoqiang Zheng
- State Key Laboratory of Aridland Crop Science, Gansu Agricultural University, Lanzhou 730070, China; (J.C.); (E.S.); (J.W.); (Y.F.); (G.Z.); (Y.W.); (X.W.); (Y.G.); (Z.W.); (P.Y.)
- College of Agronomy, Gansu Agricultural University, Lanzhou 730070, China
| | - Ying Wang
- State Key Laboratory of Aridland Crop Science, Gansu Agricultural University, Lanzhou 730070, China; (J.C.); (E.S.); (J.W.); (Y.F.); (G.Z.); (Y.W.); (X.W.); (Y.G.); (Z.W.); (P.Y.)
- College of Agronomy, Gansu Agricultural University, Lanzhou 730070, China
| | - Xiaoxia Wang
- State Key Laboratory of Aridland Crop Science, Gansu Agricultural University, Lanzhou 730070, China; (J.C.); (E.S.); (J.W.); (Y.F.); (G.Z.); (Y.W.); (X.W.); (Y.G.); (Z.W.); (P.Y.)
- College of Agronomy, Gansu Agricultural University, Lanzhou 730070, China
| | - Yongjie Gong
- State Key Laboratory of Aridland Crop Science, Gansu Agricultural University, Lanzhou 730070, China; (J.C.); (E.S.); (J.W.); (Y.F.); (G.Z.); (Y.W.); (X.W.); (Y.G.); (Z.W.); (P.Y.)
- College of Agronomy, Gansu Agricultural University, Lanzhou 730070, China
| | - Zefeng Wu
- State Key Laboratory of Aridland Crop Science, Gansu Agricultural University, Lanzhou 730070, China; (J.C.); (E.S.); (J.W.); (Y.F.); (G.Z.); (Y.W.); (X.W.); (Y.G.); (Z.W.); (P.Y.)
| | - Panfeng Yao
- State Key Laboratory of Aridland Crop Science, Gansu Agricultural University, Lanzhou 730070, China; (J.C.); (E.S.); (J.W.); (Y.F.); (G.Z.); (Y.W.); (X.W.); (Y.G.); (Z.W.); (P.Y.)
| | - Zigang Liu
- State Key Laboratory of Aridland Crop Science, Gansu Agricultural University, Lanzhou 730070, China; (J.C.); (E.S.); (J.W.); (Y.F.); (G.Z.); (Y.W.); (X.W.); (Y.G.); (Z.W.); (P.Y.)
- College of Agronomy, Gansu Agricultural University, Lanzhou 730070, China
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3
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Moore S, Jervis G, Topping JF, Chen C, Liu J, Lindsey K. A predictive model for ethylene-mediated auxin and cytokinin patterning in the Arabidopsis root. PLANT COMMUNICATIONS 2024:100886. [PMID: 38504522 DOI: 10.1016/j.xplc.2024.100886] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2023] [Revised: 02/25/2024] [Accepted: 03/18/2024] [Indexed: 03/21/2024]
Abstract
The interaction between auxin and cytokinin is important in many aspects of plant development. Experimental measurements of both auxin and cytokinin concentration and reporter gene expression clearly show the coexistence of auxin and cytokinin concentration patterning in Arabidopsis root development. However, in the context of crosstalk among auxin, cytokinin, and ethylene, little is known about how auxin and cytokinin concentration patterns simultaneously emerge and how they regulate each other in the Arabidopsis root. This work utilizes a wide range of experimental observations to propose a mechanism for simultaneous patterning of auxin and cytokinin concentrations. In addition to revealing the regulatory relationships between auxin and cytokinin, this mechanism shows that ethylene signaling is an important factor in achieving simultaneous auxin and cytokinin patterning, while also predicting other experimental observations. Combining the mechanism with a realistic in silico root model reproduces experimental observations of both auxin and cytokinin patterning. Predictions made by the mechanism can be compared with a variety of experimental observations, including those obtained by our group and other independent experiments reported by other groups. Examples of these predictions include patterning of auxin biosynthesis rate, changes in PIN1 and PIN2 patterns in pin3,4,7 mutants, changes in cytokinin patterning in the pls mutant, PLS patterning, and various trends in different mutants. This research reveals a plausible mechanism for simultaneous patterning of auxin and cytokinin concentrations in Arabidopsis root development and suggests a key role for ethylene pattern integration.
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Affiliation(s)
- Simon Moore
- Department of Biosciences, Durham University, South Road, Durham DH1 3LE, UK; Hubei Hongshan Laboratory, College of Life Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - George Jervis
- Department of Biosciences, Durham University, South Road, Durham DH1 3LE, UK
| | - Jennifer F Topping
- Department of Biosciences, Durham University, South Road, Durham DH1 3LE, UK
| | - Chunli Chen
- Hubei Hongshan Laboratory, College of Life Science and Technology, Huazhong Agricultural University, Wuhan 430070, China; National Key Laboratory for Germplasm Innovation and Utilization for Fruit and Vegetable Horticultural Crops, Huazhong Agricultural University, Wuhan, Hubei 430070, China
| | - Junli Liu
- Department of Biosciences, Durham University, South Road, Durham DH1 3LE, UK.
| | - Keith Lindsey
- Department of Biosciences, Durham University, South Road, Durham DH1 3LE, UK.
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Yang Y, Wang L, Zhang D, Che Z, Wang Q, Cui R, Zhao W, Huang F, Zhang H, Cheng H, Yu D. Soybean type-B response regulator GmRR1 mediates phosphorus uptake and yield by modifying root architecture. PLANT PHYSIOLOGY 2024; 194:1527-1544. [PMID: 37882637 DOI: 10.1093/plphys/kiad570] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Revised: 09/21/2023] [Accepted: 09/22/2023] [Indexed: 10/27/2023]
Abstract
Phosphorus (P) plays a pivotal role in plant growth and development. Low P stress can greatly hamper plant growth. Here, we identified a QTL (named QPH-9-1), which is associated with P efficiency across multiple environments through linkage analysis and genome-wide association study. Furthermore, we successfully cloned the underlying soybean (Glycine max) gene GmRR1 (a soybean type-B Response Regulator 1) that encodes a type-B response regulator protein. Knockout of GmRR1 resulted in a substantial increase in plant height, biomass, P uptake efficiency, and yield-related traits due to the modification of root structure. In contrast, overexpression of GmRR1 in plants resulted in a decrease in these phenotypes. Further analysis revealed that knockout of GmRR1 substantially increased the levels of auxin and ethylene in roots, thereby promoting root hair formation and growth by promoting the formation of root hair primordium and lengthening the root apical meristem. Yeast two-hybrid, bimolecular fluorescence complementation, and dual-luciferase assays demonstrated an interaction between GmRR1 and Histidine-containing Phosphotransmitter protein 1. Expression analysis suggested that these proteins coparticipated in response to low P stress. Analysis of genomic sequences showed that GmRR1 underwent a selection during soybean domestication. Taken together, this study provides further insights into how plants respond to low P stress by modifying root architecture through phytohormone pathways.
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Affiliation(s)
- Yuming Yang
- National Key Laboratory of Crop Genetics and Germplasm Enhancement, National Center for Soybean Improvement, Jiangsu Collaborative Innovation Center for Modern Crop Production, Nanjing Agricultural University, Nanjing 210095, China
- School of Agriculture, Henan Institute of Science and Technology, Xinxiang 453003, China
| | - Li Wang
- National Key Laboratory of Crop Genetics and Germplasm Enhancement, National Center for Soybean Improvement, Jiangsu Collaborative Innovation Center for Modern Crop Production, Nanjing Agricultural University, Nanjing 210095, China
- School of Agriculture, Henan Institute of Science and Technology, Xinxiang 453003, China
| | - Dan Zhang
- Collaborative Innovation Center of Henan Grain Crops, College of Agronomy, Henan Agricultural University, Zhengzhou 450046, China
| | - Zhijun Che
- National Key Laboratory of Crop Genetics and Germplasm Enhancement, National Center for Soybean Improvement, Jiangsu Collaborative Innovation Center for Modern Crop Production, Nanjing Agricultural University, Nanjing 210095, China
- School of Agriculture, Ningxia University, Yinchuan 750021, China
| | - Qing Wang
- National Key Laboratory of Crop Genetics and Germplasm Enhancement, National Center for Soybean Improvement, Jiangsu Collaborative Innovation Center for Modern Crop Production, Nanjing Agricultural University, Nanjing 210095, China
| | - Ruifan Cui
- Collaborative Innovation Center of Henan Grain Crops, College of Agronomy, Henan Agricultural University, Zhengzhou 450046, China
| | - Wei Zhao
- National Key Laboratory of Crop Genetics and Germplasm Enhancement, National Center for Soybean Improvement, Jiangsu Collaborative Innovation Center for Modern Crop Production, Nanjing Agricultural University, Nanjing 210095, China
| | - Fang Huang
- National Key Laboratory of Crop Genetics and Germplasm Enhancement, National Center for Soybean Improvement, Jiangsu Collaborative Innovation Center for Modern Crop Production, Nanjing Agricultural University, Nanjing 210095, China
| | - Hengyou Zhang
- Northeast Institute of Geography and Agroecology, Key Laboratory of Soybean Molecular Design Breeding, Chinese Academy of Sciences, Harbin 150081, China
| | - Hao Cheng
- National Key Laboratory of Crop Genetics and Germplasm Enhancement, National Center for Soybean Improvement, Jiangsu Collaborative Innovation Center for Modern Crop Production, Nanjing Agricultural University, Nanjing 210095, China
| | - Deyue Yu
- National Key Laboratory of Crop Genetics and Germplasm Enhancement, National Center for Soybean Improvement, Jiangsu Collaborative Innovation Center for Modern Crop Production, Nanjing Agricultural University, Nanjing 210095, China
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5
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Shen N, Jiang C, Jiang A. Arabidopsis plasma membrane H +-ATPase interacts with auxin to regulate Danger-Associated Peptide Pep1-induced root growth inhibition. Biochem Biophys Res Commun 2024; 696:149507. [PMID: 38237234 DOI: 10.1016/j.bbrc.2024.149507] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2024] [Accepted: 01/08/2024] [Indexed: 02/02/2024]
Abstract
Plant elicitor peptide 1 (Pep1) is one of plant-derived damage-associated molecular patterns (DAMPs) involved in the regulation of multiple biological processes, including immune response and root growth. The exogenous application of Pep1 was shown to inhibit root growth by affecting the auxin content and extracellular pH level in the transition zone (TZ). However, the signaling relationship between extracellular pH and auxin in Pep1-regulated root growth inhibition has not been explored. Our study here suggested that both pH signaling and auxin signaling were responsible for Pep1-regulated root growth inhibition, and the Pep1-induced auxin accumulation in TZ depended on apoplastic acidification. To increase the apoplastic pH in TZ, we mutated the AHA2 and found that the mutants of aha2-4 and pin2aha2-4 both reduced Pep1-induced auxin content in TZ, thereby alleviating root growth inhibition. Thus, our results reveal a new auxin-pH signaling crosstalk mechanism in regulating root growth, and provide new insights into the function of Pep1 in regulating root growth in Arabidopsis.
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Affiliation(s)
- Nuo Shen
- School of Integrated Chinese and Western Medicine, Anhui University of Chinese Medicine, Hefei, 230012, China
| | - Chuanwei Jiang
- School of Integrated Chinese and Western Medicine, Anhui University of Chinese Medicine, Hefei, 230012, China
| | - Aijuan Jiang
- School of Integrated Chinese and Western Medicine, Anhui University of Chinese Medicine, Hefei, 230012, China.
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Mohanasundaram B, Palit S, Bhide AJ, Pala M, Rajoria K, Girigosavi P, Banerjee AK. PpSCARECROW1 (PpSCR1) regulates leaf blade and mid-vein development in Physcomitrium patens. PLANT MOLECULAR BIOLOGY 2024; 114:12. [PMID: 38324222 DOI: 10.1007/s11103-023-01398-6] [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: 04/01/2023] [Accepted: 12/11/2023] [Indexed: 02/08/2024]
Abstract
In plants, asymmetric cell divisions result in distinct cell fates forming large and small daughter cells, adding to the cellular diversity in an organ. SCARECROW (SCR), a GRAS domain-containing transcription factor controls asymmetric periclinal cell divisions in flowering plants by governing radial patterning of ground tissue in roots and cell proliferation in leaves. Though SCR homologs are present across land plant lineages, the current understanding of their role in cellular patterning and leaf development is mostly limited to flowering plants. Our phylogenetic analysis identified three SCR homologs in moss Physcomitrium patens, amongst which PpSCR1 showed highest expression in gametophores and its promoter activity was prominent at the mid-vein and the flanking leaf blade cells pointing towards its role in leaf development. Notably, out of the three SCR homologs, only the ppscr1 knock-out lines developed slender leaves with four times narrower leaf blade and three times thicker mid-vein. Detailed histology studies revealed that slender leaf phenotype is either due to the loss of anticlinal cell divisions or failure of periclinal division suppression in the leaf blade. RNA-Seq analyses revealed that genes responsible for cell division and differentiation are expressed differentially in the mutant. PpSCR1 overexpression lines exhibited significantly wider leaf lamina, further reconfirming the role in leaf development. Together, our data suggests that PpSCR1 is involved in the leaf blade and mid-vein development of moss and that its role in the regulation of cell division and proliferation is ancient and conserved among flowering plants and mosses.
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Affiliation(s)
- Boominathan Mohanasundaram
- Indian Institute of Science Education and Research (IISER-Pune), Biology Division, Dr Homi Bhabha Road, Pune, 411008, Maharashtra, India
- Currently at Donald Danforth Plant Science Center, St. Louis, MO, USA
| | - Shirsa Palit
- Indian Institute of Science Education and Research (IISER-Pune), Biology Division, Dr Homi Bhabha Road, Pune, 411008, Maharashtra, India
- Currently at Cold Spring Harbor Laboratory, Cold Spring Harbor, New York, USA
| | - Amey J Bhide
- Indian Institute of Science Education and Research (IISER-Pune), Biology Division, Dr Homi Bhabha Road, Pune, 411008, Maharashtra, India
| | - Madhusmita Pala
- Indian Institute of Science Education and Research (IISER-Pune), Biology Division, Dr Homi Bhabha Road, Pune, 411008, Maharashtra, India
| | - Kanishka Rajoria
- Indian Institute of Science Education and Research (IISER-Pune), Biology Division, Dr Homi Bhabha Road, Pune, 411008, Maharashtra, India
| | - Payal Girigosavi
- Indian Institute of Science Education and Research (IISER-Pune), Biology Division, Dr Homi Bhabha Road, Pune, 411008, Maharashtra, India
- Currently at National AIDS Research Institute, Pune, Maharashtra, India
| | - Anjan K Banerjee
- Indian Institute of Science Education and Research (IISER-Pune), Biology Division, Dr Homi Bhabha Road, Pune, 411008, Maharashtra, India.
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Qin H, Xiao M, Li Y, Huang R. Ethylene Modulates Rice Root Plasticity under Abiotic Stresses. PLANTS (BASEL, SWITZERLAND) 2024; 13:432. [PMID: 38337965 PMCID: PMC10857340 DOI: 10.3390/plants13030432] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2024] [Revised: 01/30/2024] [Accepted: 01/31/2024] [Indexed: 02/12/2024]
Abstract
Plants live in constantly changing environments that are often unfavorable or stressful. Root development strongly affects plant growth and productivity, and the developmental plasticity of roots helps plants to survive under abiotic stress conditions. This review summarizes the progress being made in understanding the regulation of the phtyohormone ethylene in rice root development in response to abiotic stresses, highlighting the complexity associated with the integration of ethylene synthesis and signaling in root development under adverse environments. Understanding the molecular mechanisms of ethylene in regulating root architecture and response to environmental signals can contribute to the genetic improvement of crop root systems, enhancing their adaptation to stressful environmental conditions.
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Affiliation(s)
- Hua Qin
- Biotechnology Research Institute, Chinese Academy of Agricultural Sciences, Beijing 100081, China; (Y.L.); (R.H.)
- National Key Facility of Crop Gene Resources and Genetic Improvement, Beijing 100081, China
| | - Minggang Xiao
- Biotechnology Research Institute, Heilongjiang Academy of Agricultural Sciences, Harbin 150028, China;
| | - Yuxiang Li
- Biotechnology Research Institute, Chinese Academy of Agricultural Sciences, Beijing 100081, China; (Y.L.); (R.H.)
| | - Rongfeng Huang
- Biotechnology Research Institute, Chinese Academy of Agricultural Sciences, Beijing 100081, China; (Y.L.); (R.H.)
- National Key Facility of Crop Gene Resources and Genetic Improvement, Beijing 100081, China
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8
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Kumar V, Wegener M, Knieper M, Kaya A, Viehhauser A, Dietz KJ. Strategies of Molecular Signal Integration for Optimized Plant Acclimation to Stress Combinations. Methods Mol Biol 2024; 2832:3-29. [PMID: 38869784 DOI: 10.1007/978-1-0716-3973-3_1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/14/2024]
Abstract
Plant growth and survival in their natural environment require versatile mitigation of diverse threats. The task is especially challenging due to the largely unpredictable interaction of countless abiotic and biotic factors. To resist an unfavorable environment, plants have evolved diverse sensing, signaling, and adaptive molecular mechanisms. Recent stress studies have identified molecular elements like secondary messengers (ROS, Ca2+, etc.), hormones (ABA, JA, etc.), and signaling proteins (SnRK, MAPK, etc.). However, major gaps remain in understanding the interaction between these pathways, and in particular under conditions of stress combinations. Here, we highlight the challenge of defining "stress" in such complex natural scenarios. Therefore, defining stress hallmarks for different combinations is crucial. We discuss three examples of robust and dynamic plant acclimation systems, outlining specific plant responses to complex stress overlaps. (a) The high plasticity of root system architecture is a decisive feature in sustainable crop development in times of global climate change. (b) Similarly, broad sensory abilities and apparent control of cellular metabolism under adverse conditions through retrograde signaling make chloroplasts an ideal hub. Functional specificity of the chloroplast-associated molecular patterns (ChAMPs) under combined stresses needs further focus. (c) The molecular integration of several hormonal signaling pathways, which bring together all cellular information to initiate the adaptive changes, needs resolving.
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Affiliation(s)
- Vijay Kumar
- Biochemistry and Physiology of Plants, Faculty of Biology, Bielefeld University, Bielefeld, Germany
| | - Melanie Wegener
- Biochemistry and Physiology of Plants, Faculty of Biology, Bielefeld University, Bielefeld, Germany
| | - Madita Knieper
- Biochemistry and Physiology of Plants, Faculty of Biology, Bielefeld University, Bielefeld, Germany
| | - Armağan Kaya
- Biochemistry and Physiology of Plants, Faculty of Biology, Bielefeld University, Bielefeld, Germany
| | - Andrea Viehhauser
- Biochemistry and Physiology of Plants, Faculty of Biology, Bielefeld University, Bielefeld, Germany
| | - Karl-Josef Dietz
- Biochemistry and Physiology of Plants, Faculty of Biology, Bielefeld University, Bielefeld, Germany.
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Singh T, Bisht N, Ansari MM, Chauhan PS. The hidden harmony: Exploring ROS-phytohormone nexus for shaping plant root architecture in response to environmental cues. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2024; 206:108273. [PMID: 38103339 DOI: 10.1016/j.plaphy.2023.108273] [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: 08/28/2023] [Revised: 11/28/2023] [Accepted: 12/07/2023] [Indexed: 12/19/2023]
Abstract
Root system architecture, encompassing lateral roots and root hairs, plays a vital in overall plant growth and stress tolerance. Reactive oxygen species (ROS) and plant hormones intricately regulate root growth and development, serving as signaling molecules that govern processes such as cell proliferation and differentiation. Manipulating the interplay between ROS and hormones has the potential to enhance nutrient absorption, stress tolerance, and agricultural productivity. In this review, we delve into how studying these processes provides insights into how plants respond to environmental changes and optimize growth patterns to better control cellular processes and stress responses in crops. We discuss various factors and complex signaling networks that may exist among ROS and phytohormones during root development. Additionally, the review highlights possible role of reactive nitrogen species (RNS) in ROS-phytohormone interactions and in shaping root system architecture according to environmental cues.
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Affiliation(s)
- Tanya Singh
- CSIR-National Botanical Research Institute (CSIR-NBRI), Rana Pratap Marg, Lucknow, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
| | - Nikita Bisht
- CSIR-National Botanical Research Institute (CSIR-NBRI), Rana Pratap Marg, Lucknow, India
| | - Mohd Mogees Ansari
- CSIR-National Botanical Research Institute (CSIR-NBRI), Rana Pratap Marg, Lucknow, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
| | - Puneet Singh Chauhan
- CSIR-National Botanical Research Institute (CSIR-NBRI), Rana Pratap Marg, Lucknow, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India.
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10
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Dudits D, Cseri A, Török K, Vankova R, Dobrev PI, Sass L, Steinbach G, Kelemen-Valkony I, Zombori Z, Ferenc G, Ayaydin F. Manifestation of Triploid Heterosis in the Root System after Crossing Diploid and Autotetraploid Energy Willow Plants. Genes (Basel) 2023; 14:1929. [PMID: 37895278 PMCID: PMC10606394 DOI: 10.3390/genes14101929] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2023] [Revised: 10/04/2023] [Accepted: 10/10/2023] [Indexed: 10/29/2023] Open
Abstract
Successful use of woody species in reducing climatic and environmental risks of energy shortage and spreading pollution requires deeper understanding of the physiological functions controlling biomass productivity and phytoremediation efficiency. Targets in the breeding of energy willow include the size and the functionality of the root system. For the combination of polyploidy and heterosis, we have generated triploid hybrids (THs) of energy willow by crossing autotetraploid willow plants with leading cultivars (Tordis and Inger). These novel Salix genotypes (TH3/12, TH17/17, TH21/2) have provided a unique experimental material for characterization of Mid-Parent Heterosis (MPH) in various root traits. Using a root phenotyping platform, we detected heterosis (TH3/12: MPH 43.99%; TH21/2: MPH 26.93%) in the size of the root system in soil. Triploid heterosis was also recorded in the fresh root weights, but it was less pronounced (MPH%: 9.63-19.31). In agreement with root growth characteristics in soil, the TH3/12 hybrids showed considerable heterosis (MPH: 70.08%) under in vitro conditions. Confocal microscopy-based imaging and quantitative analysis of root parenchyma cells at the division-elongation transition zone showed increased average cell diameter as a sign of cellular heterosis in plants from TH17/17 and TH21/2 triploid lines. Analysis of the hormonal background revealed that the auxin level was seven times higher than the total cytokinin contents in root tips of parental Tordis plants. In triploid hybrids, the auxin-cytokinin ratios were considerably reduced in TH3/12 and TH17/17 roots. In particular, the contents of cytokinin precursor, such as isopentenyl adenosine monophosphate, were elevated in all three triploid hybrids. Heterosis was also recorded in the amounts of active gibberellin precursor, GA19, in roots of TH3/12 plants. The presented experimental findings highlight the physiological basics of triploid heterosis in energy willow roots.
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Affiliation(s)
- Dénes Dudits
- Institute of Plant Biology, HUN-REN Biological Research Centre, 6726 Szeged, Hungary; (D.D.); (K.T.); (L.S.); (Z.Z.)
| | - András Cseri
- Institute of Plant Biology, HUN-REN Biological Research Centre, 6726 Szeged, Hungary; (D.D.); (K.T.); (L.S.); (Z.Z.)
| | - Katalin Török
- Institute of Plant Biology, HUN-REN Biological Research Centre, 6726 Szeged, Hungary; (D.D.); (K.T.); (L.S.); (Z.Z.)
| | - Radomira Vankova
- Institute of Experimental Botany, Czech Academy of Sciences, 165 02 Prague, Czech Republic; (R.V.); (P.I.D.)
| | - Petre I. Dobrev
- Institute of Experimental Botany, Czech Academy of Sciences, 165 02 Prague, Czech Republic; (R.V.); (P.I.D.)
| | - László Sass
- Institute of Plant Biology, HUN-REN Biological Research Centre, 6726 Szeged, Hungary; (D.D.); (K.T.); (L.S.); (Z.Z.)
| | - Gábor Steinbach
- Laboratory of Cellular Imaging, HUN-REN Biological Research Centre, 6726 Szeged, Hungary; (G.S.); (I.K.-V.); (F.A.)
| | - Ildikó Kelemen-Valkony
- Laboratory of Cellular Imaging, HUN-REN Biological Research Centre, 6726 Szeged, Hungary; (G.S.); (I.K.-V.); (F.A.)
| | - Zoltán Zombori
- Institute of Plant Biology, HUN-REN Biological Research Centre, 6726 Szeged, Hungary; (D.D.); (K.T.); (L.S.); (Z.Z.)
| | - Györgyi Ferenc
- Institute of Plant Biology, HUN-REN Biological Research Centre, 6726 Szeged, Hungary; (D.D.); (K.T.); (L.S.); (Z.Z.)
| | - Ferhan Ayaydin
- Laboratory of Cellular Imaging, HUN-REN Biological Research Centre, 6726 Szeged, Hungary; (G.S.); (I.K.-V.); (F.A.)
- Hungarian Centre of Excellence for Molecular Medicine (HCEMM) Nonprofit Ltd., 6728 Szeged, Hungary
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11
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Yuan G, Lian Y, Wang J, Yong T, Gao H, Wu H, Yang T, Wang C. AtHSPR functions in gibberellin-mediated primary root growth by interacting with KNAT5 and OFP1 in Arabidopsis. PLANT CELL REPORTS 2023; 42:1629-1649. [PMID: 37597006 DOI: 10.1007/s00299-023-03057-y] [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: 05/11/2023] [Accepted: 08/02/2023] [Indexed: 08/21/2023]
Abstract
KEY MESSAGE AtHSPR forms a complex with KNAT5 and OFP1 to regulate primary root growth through GA-mediated root meristem activity. KNAT5-OFP1 functions as a negative regulator of AtHSPR in response to GA. Plant root growth is modulated by gibberellic acid (GA) signaling and depends on root meristem maintenance. ARABIDOPSIS THALIANA HEAT SHOCK PROTEIN-RELATED (AtHSPR) is a vital regulator of flowering time and salt stress tolerance. However, little is known about the role of AtHSPR in the regulation of primary root growth. Here, we report that athspr mutant exhibits a shorter primary root compared to wild type and that AtHSPR interacts with KNOTTED1-LIKE HOMEOBOX GENE 5 (KNAT5) and OVATE FAMILY PROTEIN 1 (OFP1). Genetic analysis showed that overexpression of KNAT5 or OFP1 caused a defect in primary root growth similar to that of the athspr mutant, but knockout of KNAT5 or OFP1 rescued the short root phenotype in the athspr mutant by altering root meristem activity. Further investigation revealed that KNAT5 interacts with OFP1 and that AtHSPR weakens the inhibition of GIBBERELLIN 20-OXIDASE 1 (GA20ox1) expression by the KNAT5-OFP1 complex. Moreover, root meristem cell proliferation and root elongation in 35S::KNAT5athspr and 35S::OFP1athspr seedlings were hypersensitive to GA3 treatment compared to the athspr mutant. Together, our results demonstrate that the AtHSPR-KNAT5-OFP1 module regulates root growth and development by impacting the expression of GA biosynthetic gene GA20ox1, which could be a way for plants to achieve plasticity in response to the environment.
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Affiliation(s)
- Guoqiang Yuan
- Ministry of Education Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, Lanzhou, 730000, China
| | - Yuke Lian
- Ministry of Education Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, Lanzhou, 730000, China
| | - Junmei Wang
- Ministry of Education Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, Lanzhou, 730000, China
| | - Taibi Yong
- Ministry of Education Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, Lanzhou, 730000, China
| | - Huanhuan Gao
- Ministry of Education Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, Lanzhou, 730000, China
| | - Haijun Wu
- Ministry of Education Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, Lanzhou, 730000, China
| | - Tao Yang
- Ministry of Education Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, Lanzhou, 730000, China.
| | - Chongying Wang
- Ministry of Education Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, Lanzhou, 730000, China.
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12
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Del Dottore E, Mazzolai B. Perspectives on Computation in Plants. ARTIFICIAL LIFE 2023; 29:336-350. [PMID: 36787453 DOI: 10.1162/artl_a_00396] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Plants thrive in virtually all natural and human-adapted environments and are becoming popular models for developing robotics systems because of their strategies of morphological and behavioral adaptation. Such adaptation and high plasticity offer new approaches for designing, modeling, and controlling artificial systems acting in unstructured scenarios. At the same time, the development of artifacts based on their working principles reveals how plants promote innovative approaches for preservation and management plans and opens new applications for engineering-driven plant science. Environmentally mediated growth patterns (e.g., tropisms) are clear examples of adaptive behaviors displayed through morphological phenotyping. Plants also create networks with other plants through subterranean roots-fungi symbiosis and use these networks to exchange resources or warning signals. This article discusses the functional behaviors of plants and shows the close similarities with a perceptron-like model that could act as a behavior-based control model in plants. We begin by analyzing communication rules and growth behaviors of plants; we then show how we translated plant behaviors into algorithmic solutions for bioinspired robot controllers; and finally, we discuss how those solutions can be extended to embrace original approaches to networking and robotics control architectures.
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Affiliation(s)
| | - Barbara Mazzolai
- Bioinspired Soft Robotics Laboratory, Istituto Italiano di Tecnologia.
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13
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Xing L, Zhang L, Zheng H, Zhang Z, Luo Y, Liu Y, Wang L. ZmmiR169q/ZmNF-YA8 is a module that homeostatically regulates primary root growth and salt tolerance in maize. FRONTIERS IN PLANT SCIENCE 2023; 14:1163228. [PMID: 37457348 PMCID: PMC10344899 DOI: 10.3389/fpls.2023.1163228] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/10/2023] [Accepted: 06/06/2023] [Indexed: 07/18/2023]
Abstract
In response to salt stress, plants alter the expression of manifold gene networks, enabling them to survive and thrive in the face of adversity. As a result, the growth and development of plant roots could be drastically altered, with significant inhibition of the growth of root meristematic zones. Although it is known that root growth is primarily regulated by auxins and cytokinins, the molecular regulatory mechanism by which salt stress stunts root meristems remains obscure. In this study, we found that the ZmmiR169q/ZmNF-YA8 module regulates the growth of maize taproots in response to salt stress. Salt stress downregulates ZmmiR169q expression, allowing for significant upregulation of ZmNF-YA8, which, in turn, activates ZmERF1B, triggering the upregulation of ASA1 and ASA2, two rate-limiting enzymes in the biosynthesis of tryptophan (Trp), leading to the accumulation of auxin in the root tip, thereby inhibiting root growth. The development of the maize root is stymied as meristem cell division and meristematic zone expansion are both stifled. This study reveals the ZmmiR169q/ZmNF-YA8 module's involvement in maintaining an equilibrium in bestowing plant salt tolerance and root growth and development under salt stress, providing new insights into the molecular mechanism underlying the homeostatic regulation of plant development in response to salt stress.
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Affiliation(s)
- Lijuan Xing
- Biotechnology Research Institute, Chinese Academy of Agricultural Sciences (CAAS), Beijing, China
| | - Lan Zhang
- Biotechnology Research Institute, Chinese Academy of Agricultural Sciences (CAAS), Beijing, China
| | - Hongyan Zheng
- Biotechnology Research Institute, Chinese Academy of Agricultural Sciences (CAAS), Beijing, China
- National Nanfan Research Institute (Sanya), Chinese Academy of Agricultural Sciences (CAAS), Hainan, China
| | - Zhuoxia Zhang
- Biotechnology Research Institute, Chinese Academy of Agricultural Sciences (CAAS), Beijing, China
| | - Yanzhong Luo
- Biotechnology Research Institute, Chinese Academy of Agricultural Sciences (CAAS), Beijing, China
| | - Yuan Liu
- Biotechnology Research Institute, Chinese Academy of Agricultural Sciences (CAAS), Beijing, China
| | - Lei Wang
- Biotechnology Research Institute, Chinese Academy of Agricultural Sciences (CAAS), Beijing, China
- National Nanfan Research Institute (Sanya), Chinese Academy of Agricultural Sciences (CAAS), Hainan, China
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14
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Sowders JM, Tanaka K. A histochemical reporter system to study extracellular ATP response in plants. FRONTIERS IN PLANT SCIENCE 2023; 14:1183335. [PMID: 37332691 PMCID: PMC10272726 DOI: 10.3389/fpls.2023.1183335] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/10/2023] [Accepted: 05/09/2023] [Indexed: 06/20/2023]
Abstract
When cells experience acute mechanical distress, they release ATP from their cellular compartment into the surrounding microenvironment. This extracellular ATP (eATP) can then act as a danger signal-signaling cellular damage. In plants, cells adjacent to damage detect rising eATP concentrations through the cell-surface receptor kinase, P2K1. Following eATP perception, P2K1 initiates a signaling cascade mobilizing plant defense. Recent transcriptome analysis revealed a profile of eATP-induced genes sharing pathogen- and wound-response hallmarks-consistent with a working model for eATP as a defense-mobilizing danger signal. To build on the transcriptional footprint and broaden our understanding of dynamic eATP signaling responses in plants, we aimed to i) generate a visual toolkit for eATP-inducible marker genes using a β-glucuronidase (GUS) reporter system and ii) evaluate the spatiotemporal response of these genes to eATP in plant tissues. Here, we demonstrate that the promoter activities of five genes, ATPR1, ATPR2, TAT3, WRKY46, and CNGC19, were highly sensitive to eATP in the primary root meristem and elongation zones with maximal responses at 2 h after treatment. These results suggest the primary root tip as a hub to study eATP-signaling activity and provide a proof-of-concept toward using these reporters to further dissect eATP and damage signaling in plants.
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Affiliation(s)
- Joel M. Sowders
- Department of Plant Pathology, College of Agricultural, Human, and Natural Resource Sciences, Washington State University, Pullman, WA, United States
- Molecular Plant Sciences Program, Washington State University, Pullman, WA, United States
| | - Kiwamu Tanaka
- Department of Plant Pathology, College of Agricultural, Human, and Natural Resource Sciences, Washington State University, Pullman, WA, United States
- Molecular Plant Sciences Program, Washington State University, Pullman, WA, United States
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15
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Huang Y, Cui J, Li M, Yang R, Hu Y, Yu X, Chen Y, Wu Q, Yao H, Yu G, Guo J, Zhang H, Wu S, Cai Y. Conservation and divergence of flg22, pep1 and nlp20 in activation of immune response and inhibition of root development. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2023; 331:111686. [PMID: 36963637 DOI: 10.1016/j.plantsci.2023.111686] [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: 11/28/2022] [Revised: 02/11/2023] [Accepted: 03/19/2023] [Indexed: 06/18/2023]
Abstract
Many pattern-recognition receptors (PRRs) and their corresponding ligands have been identified. However, it is largely unknown how similar and different these ligands are in inducing plant innate immunity and affecting plant development. In this study, we examined three well characterized ligands in Arabidopsis thaliana, namely flagellin 22 (flg22), plant elicitor peptide 1 (pep1) and a conserved 20-amino-acid fragment found in most necrosis and ethylene-inducing peptide 1-like proteins (nlp20). Our quantitative analyses detected the differences in amplitude in the early immune responses of these ligands, with nlp20-induced responses typically being slower than those mediated by flg22 and pep1. RNA sequencing showed the shared differentially expressed genes (DEGs) was mostly enriched in defense response, whereas nlp20-regulated genes represent only a fraction of those genes differentially regulated by flg22 and pep1. The three elicitors all inhibited primary root growth, especially pep1, which inhibited both auxin transport and signaling pathway. In addition, pep1 significantly inhibited the cell division and genes involved in cell cycle. Compared with flg22 and nlp20, pep1 induced much stronger expression of its receptor in roots, suggesting a potential positive feedback regulation in the activation of immune response. Despite PRRs and their co-receptor BAK1 were necessary for both PAMP induced immune response and root growth inhibition, bik1 mutant only showed impaired defense response but relatively normal root growth inhibition, suggesting BIK1 acts differently in these two biological processes.
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Affiliation(s)
- Yan Huang
- College of Life Sciences, Sichuan Agricultural University, Ya'an, Sichuan, PR China
| | - Junmei Cui
- College of Life Sciences, Sichuan Agricultural University, Ya'an, Sichuan, PR China
| | - Meng Li
- College of Horticulture, FAFU-UCR Joint Center and Fujian Provincial Key Laboratory of Haixia Applied Plant Systems Biology, Fujian Agriculture and Forestry University, Fuzhou 350002, PR China
| | - Rongqian Yang
- College of Life Sciences, Sichuan Agricultural University, Ya'an, Sichuan, PR China
| | - Yang Hu
- College of Life Sciences, Sichuan Agricultural University, Ya'an, Sichuan, PR China
| | - Xiaosong Yu
- College of Life Sciences, Sichuan Agricultural University, Ya'an, Sichuan, PR China
| | - Ying Chen
- College of Life Sciences, Sichuan Agricultural University, Ya'an, Sichuan, PR China
| | - Qiqi Wu
- Lusyno Biotech Ltd., Chengdu, Sichuan, PR China
| | - Huipeng Yao
- College of Life Sciences, Sichuan Agricultural University, Ya'an, Sichuan, PR China
| | - Guozhi Yu
- College of Life Sciences, Sichuan Agricultural University, Ya'an, Sichuan, PR China
| | - Jinya Guo
- College of Life Sciences, Sichuan Agricultural University, Ya'an, Sichuan, PR China
| | - Huaiyu Zhang
- College of Life Sciences, Sichuan Agricultural University, Ya'an, Sichuan, PR China
| | - Shuang Wu
- College of Horticulture, FAFU-UCR Joint Center and Fujian Provincial Key Laboratory of Haixia Applied Plant Systems Biology, Fujian Agriculture and Forestry University, Fuzhou 350002, PR China.
| | - Yi Cai
- College of Life Sciences, Sichuan Agricultural University, Ya'an, Sichuan, PR China.
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16
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Wang J, Li X, Chen X, Tang W, Yu Z, Xu T, Tian H, Ding Z. Dual regulations of cell cycle regulator DPa by auxin in Arabidopsis root distal stem cell maintenance. Proc Natl Acad Sci U S A 2023; 120:e2218503120. [PMID: 37126711 PMCID: PMC10175748 DOI: 10.1073/pnas.2218503120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Accepted: 03/29/2023] [Indexed: 05/03/2023] Open
Abstract
The plant hormone auxin plays a key role to maintain root stem cell identity which is essential for root development. However, the molecular mechanism by which auxin regulates root distal stem cell (DSC) identity is not well understood. In this study, we revealed that the cell cycle factor DPa is a vital regulator in the maintenance of root DSC identity through multiple auxin signaling cascades. On the one hand, auxin positively regulates the transcription of DPa via AUXIN RESPONSE FACTOR 7 and ARF19. On the other hand, auxin enhances the protein stability of DPa through MITOGEN-ACTIVATED PROTEIN KINASE 3 (MPK3)/MPK6-mediated phosphorylation. Consistently, mutation of the identified three threonine residues (Thr10, Thr25, and Thr227) of DPa to nonphosphorylated form alanine (DPa3A) highly decreased the phosphorylation level of DPa, which decreased its protein stability and affected the maintenance of root DSC identity. Taken together, this study provides insight into the molecular mechanism of how auxin regulates root distal stem cell identity through the dual regulations of DPa at both transcriptional and posttranslational levels.
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Affiliation(s)
- Junxia Wang
- The Key Laboratory of Plant Development and Environmental Adaptation Biology, Ministry of Education, School of Life Sciences, Shandong University, 266237 Qingdao, Shandong, China
| | - Xiaoxuan Li
- The Key Laboratory of Plant Development and Environmental Adaptation Biology, Ministry of Education, School of Life Sciences, Shandong University, 266237 Qingdao, Shandong, China
| | - Xiaolu Chen
- Haixia Institute of Science and Technology, College of Life Sciences, Fujian Agriculture and Forestry University, 350002Fuzhou, Fujian, China
| | - Wenxin Tang
- Haixia Institute of Science and Technology, College of Life Sciences, Fujian Agriculture and Forestry University, 350002Fuzhou, Fujian, China
| | - Zipeng Yu
- The Key Laboratory of Plant Development and Environmental Adaptation Biology, Ministry of Education, School of Life Sciences, Shandong University, 266237 Qingdao, Shandong, China
| | - Tongda Xu
- Haixia Institute of Science and Technology, College of Life Sciences, Fujian Agriculture and Forestry University, 350002Fuzhou, Fujian, China
| | - Huiyu Tian
- The Key Laboratory of Plant Development and Environmental Adaptation Biology, Ministry of Education, School of Life Sciences, Shandong University, 266237 Qingdao, Shandong, China
| | - Zhaojun Ding
- The Key Laboratory of Plant Development and Environmental Adaptation Biology, Ministry of Education, School of Life Sciences, Shandong University, 266237 Qingdao, Shandong, China
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17
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Qin H, Wang J, Zhou J, Qiao J, Li Y, Quan R, Huang R. Abscisic acid promotes auxin biosynthesis to inhibit primary root elongation in rice. PLANT PHYSIOLOGY 2023; 191:1953-1967. [PMID: 36535001 PMCID: PMC10022642 DOI: 10.1093/plphys/kiac586] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/14/2022] [Accepted: 11/19/2022] [Indexed: 06/01/2023]
Abstract
Soil compaction is a global problem causing inadequate rooting and poor yield in crops. Accumulating evidence indicates that phytohormones coordinately regulate root growth via regulating specific growth processes in distinct tissues. However, how abscisic acid (ABA) signaling translates into auxin production to control root growth during adaptation to different soil environments is still unclear. In this study, we report that ABA has biphasic effects on primary root growth in rice (Oryza sativa) through an auxin biosynthesis-mediated process, causing suppression of root elongation and promotion of root swelling in response to soil compaction. We found that ABA treatment induced the expression of auxin biosynthesis genes and auxin accumulation in roots. Conversely, blocking auxin biosynthesis reduced ABA sensitivity in roots, showing longer and thinner primary roots with larger root meristem size and smaller root diameter. Further investigation revealed that the transcription factor basic region and leucine zipper 46 (OsbZIP46), involved in ABA signaling, can directly bind to the YUCCA8/rice ethylene-insensitive 7 (OsYUC8/REIN7) promoter to activate its expression, and genetic analysis revealed that OsYUC8/REIN7 is located downstream of OsbZIP46. Moreover, roots of mutants defective in ABA or auxin biosynthesis displayed the enhanced ability to penetrate compacted soil. Thus, our results disclose the mechanism in which ABA employs auxin as a downstream signal to modify root elongation and radial expansion, resulting in short and swollen roots impaired in their ability to penetrate compacted soil. These findings provide avenues for breeders to select crops resilient to soil compaction.
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Affiliation(s)
- Hua Qin
- Authors for correspondence: (H.Q.); (R.H.)
| | | | | | - Jinzhu Qiao
- Biotechnology Research Institute, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Yuxiang Li
- Biotechnology Research Institute, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Ruidang Quan
- Biotechnology Research Institute, Chinese Academy of Agricultural Sciences, Beijing 100081, China
- National Key Facility of Crop Gene Resources and Genetic Improvement, Beijing 100081, China
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18
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Lu S, Huo Z, Niu T, Zhu W, Wang J, Wu D, He C, Wang Y, Zou L, Sheng L. Molecular mechanisms of toxicity and detoxification in rice (Oryza sativa L.) exposed to polystyrene nanoplastics. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2023; 199:107605. [PMID: 37119549 DOI: 10.1016/j.plaphy.2023.02.035] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2022] [Revised: 02/14/2023] [Accepted: 02/21/2023] [Indexed: 05/01/2023]
Abstract
Nanoplastics (NPs) are an emerging threat to higher plants in terrestrial ecosystems. However, the molecular of NP-related phytotoxicity remains unclear. In the present study, rice seedlings were exposed to polystyrene (PS, 50 nm) NPs at 0, 50, 100, and 200 mg/L under hydroponic conditions to investigate the induced physiological indices and transcriptional mechanisms. We found that 50, 100, and 200 mg/L PS significantly reduced root (53.05%, 49.61%, and 57.58%, respectively) and shoot (54.63%, 61.56%, and 62.64%, respectively) biomass as compared with the control seedlings. The activities of antioxidant enzymes, including catalase (CAT), peroxidase (POD), superoxide dismutase (SOD), and ascorbate peroxidase (APX), were significantly activated in all PS treatment groups, indicating that PS inhibited plant growth and induced oxidative stress. Transcriptome analyses showed that PS modulated the expression of the genes involved in cell detoxification, active oxygen metabolism, mitogen-activated protein kinase (MAPK), and plant hormone transduction pathways. Our study provides new insights into phytotoxicity by demonstrating the potential underlying toxicity of PS NPs in higher plants.
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Affiliation(s)
- Siyuan Lu
- State Environmental Protection Key Laboratory of Wetland Ecology and Vegetation Restoration, School of Environment, Northeast Normal University, Changchun, Jilin, 130117, China
| | - Zhongqi Huo
- State Environmental Protection Key Laboratory of Wetland Ecology and Vegetation Restoration, School of Environment, Northeast Normal University, Changchun, Jilin, 130117, China
| | - Tingting Niu
- State Environmental Protection Key Laboratory of Wetland Ecology and Vegetation Restoration, School of Environment, Northeast Normal University, Changchun, Jilin, 130117, China
| | - Weize Zhu
- State Environmental Protection Key Laboratory of Wetland Ecology and Vegetation Restoration, School of Environment, Northeast Normal University, Changchun, Jilin, 130117, China
| | - Junyuan Wang
- State Environmental Protection Key Laboratory of Wetland Ecology and Vegetation Restoration, School of Environment, Northeast Normal University, Changchun, Jilin, 130117, China
| | - Donghui Wu
- State Environmental Protection Key Laboratory of Wetland Ecology and Vegetation Restoration, School of Environment, Northeast Normal University, Changchun, Jilin, 130117, China; Key Laboratory of Wetland Ecology and Environment, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun, 130102, China
| | - Chunguang He
- State Environmental Protection Key Laboratory of Wetland Ecology and Vegetation Restoration, School of Environment, Northeast Normal University, Changchun, Jilin, 130117, China
| | - Yong Wang
- State Environmental Protection Key Laboratory of Wetland Ecology and Vegetation Restoration, School of Environment, Northeast Normal University, Changchun, Jilin, 130117, China.
| | - Lifang Zou
- State Environmental Protection Key Laboratory of Wetland Ecology and Vegetation Restoration, School of Environment, Northeast Normal University, Changchun, Jilin, 130117, China.
| | - Lianxi Sheng
- State Environmental Protection Key Laboratory of Wetland Ecology and Vegetation Restoration, School of Environment, Northeast Normal University, Changchun, Jilin, 130117, China
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19
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Wang M, Zhang H, Zhao X, Zhou J, Qin G, Liu Y, Kou X, Zhao Z, Wu T, Zhu JK, Feng X, Li L. SYNTAXIN OF PLANTS81 regulates root meristem activity and stem cell niche maintenance via ROS signaling. PLANT PHYSIOLOGY 2023; 191:1365-1382. [PMID: 36427205 PMCID: PMC9922426 DOI: 10.1093/plphys/kiac530] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Accepted: 11/21/2022] [Indexed: 06/16/2023]
Abstract
Root growth and development depend on continuous cell division and differentiation in root tips. In these processes, reactive oxygen species (ROS) play a critical role as signaling molecules. However, few ROS signaling regulators have been identified. In this study, we found knockdown of a syntaxin gene, SYNTAXIN OF PLANTS81 in Arabidopsis thaliana (AtSYP81) resulted in a severe reduction in root meristem activity and disruption of root stem cell niche (SCN) identity. Subsequently, we found AtSYP81 was highly expressed in roots and localized on the endoplasmic reticulum (ER). Interestingly, the reduced expression of AtSYP81 conferred a decreased number of peroxisomes in root meristem cells, raising a possibility that AtSYP81 regulates root development through peroxisome-mediated ROS production. Further transcriptome analysis revealed that class III peroxidases, which are responsible for intracellular ROS homeostasis, showed significantly changed expression in the atsyp81 mutants and AtSYP81 overexpression lines, adding evidence of the regulatory role of AtSYP81 in ROS signaling. Accordingly, rescuing the decreased ROS level via applying ROS donors effectively restored the defects in root meristem activity and SCN identity in the atsyp81 mutants. APETALA2 (AP2) transcription factors PLETHORA1 and 2 (PLT1 and PLT2) were then established as the downstream effectors in this pathway, while potential crosstalk between ROS signaling and auxin signaling was also indicated. Taken together, our findings suggest that AtSYP81 regulates root meristem activity and maintains root SCN identity by controlling peroxisome- and peroxidase-mediated ROS homeostasis, thus both broadening and deepening our understanding of the biological roles of SNARE proteins and ROS signaling.
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Affiliation(s)
- Mingjing Wang
- Key Laboratory of Saline-alkali Vegetation Ecology Restoration, Ministry of Education, College of Life Sciences, Northeast Forestry University, Harbin 150040, China
| | - Hailong Zhang
- Key Laboratory of Saline-alkali Vegetation Ecology Restoration, Ministry of Education, College of Life Sciences, Northeast Forestry University, Harbin 150040, China
| | - Xiaonan Zhao
- Key Laboratory of Saline-alkali Vegetation Ecology Restoration, Ministry of Education, College of Life Sciences, Northeast Forestry University, Harbin 150040, China
| | - Jingwen Zhou
- Key Laboratory of Saline-alkali Vegetation Ecology Restoration, Ministry of Education, College of Life Sciences, Northeast Forestry University, Harbin 150040, China
| | - Guochen Qin
- Peking University Institute of Advanced Agricultural Sciences, Shandong Laboratory of Advanced Agricultural Sciences at Weifang, Weifang, Shandong 261000, China
| | - Yuqi Liu
- Key Laboratory of Saline-alkali Vegetation Ecology Restoration, Ministry of Education, College of Life Sciences, Northeast Forestry University, Harbin 150040, China
| | - Xiaoyue Kou
- Key Laboratory of Saline-alkali Vegetation Ecology Restoration, Ministry of Education, College of Life Sciences, Northeast Forestry University, Harbin 150040, China
| | - Zhenjie Zhao
- Key Laboratory of Saline-alkali Vegetation Ecology Restoration, Ministry of Education, College of Life Sciences, Northeast Forestry University, Harbin 150040, China
| | - Tao Wu
- Key Laboratory of Soybean Molecular Design Breeding, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, China
| | - Jian-Kang Zhu
- Institute of Advanced Biotechnology and School of Life Sciences, Southern University of Science and Technology, Shenzhen 518055, China
- Center for Advanced Bioindustry Technologies, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Xianzhong Feng
- Key Laboratory of Soybean Molecular Design Breeding, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, China
| | - Lixin Li
- Key Laboratory of Saline-alkali Vegetation Ecology Restoration, Ministry of Education, College of Life Sciences, Northeast Forestry University, Harbin 150040, China
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20
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Li L, Li X, Yang C, Li L. Peanut AhmTERF1 Regulates Root Growth by Modulating Mitochondrial Abundance. Genes (Basel) 2023; 14:genes14010209. [PMID: 36672950 PMCID: PMC9859088 DOI: 10.3390/genes14010209] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2022] [Revised: 01/09/2023] [Accepted: 01/11/2023] [Indexed: 01/18/2023] Open
Abstract
Mitochondria are responsible for energy generation, as well as key metabolic and signaling pathways, and thus affect the entire developmental process of plants as well as their responses to stress. In metazoans, mitochondrial transcription termination factors (mTERFs) are known to regulate mitochondrial transcription. mTERFs have also been discovered in plants, but only a few of these proteins have been explored for their biological functions. Here, we report a role in root growth for mitochondria-associated protein AhmTERF1 in peanut (Arachis hypogaea L.). Overexpressing AhmTERF1 significantly stimulated the growth of peanut hairy roots and transgenic Arabidopsis. Surprisingly, AhmTERF1 is predominantly expressed in the root meristem where it increases mitochondrial abundance. AhmTERF1 binding to mtDNA was enriched in the RRN18 and RRN26 regions, suggesting it is related to the accumulation of mitochondrial ribosomes. Peanut is one of the main oil crops and the important source of edible oil and AhmTERF1 likely affects agronomic traits related to root growth in different peanut cultivars. We propose that peanut AhmTERF1 is an important protein for root growth due to its role in regulating mitochondrial abundance.
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Affiliation(s)
- Limei Li
- Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Science, South China Normal University, Guangzhou 510631, China
- School of Life Sciences, Zhaoqing University, Zhaoqing 526061, China
| | - Xiaoyun Li
- Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Science, South China Normal University, Guangzhou 510631, China
| | - Chen Yang
- Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Science, South China Normal University, Guangzhou 510631, China
| | - Ling Li
- Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Science, South China Normal University, Guangzhou 510631, China
- Correspondence:
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21
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He QY, Jin JF, Lou HQ, Dang FF, Xu JM, Zheng SJ, Yang JL. Abscisic acid-dependent PMT1 expression regulates salt tolerance by alleviating abscisic acid-mediated reactive oxygen species production in Arabidopsis. JOURNAL OF INTEGRATIVE PLANT BIOLOGY 2022; 64:1803-1820. [PMID: 35789105 DOI: 10.1111/jipb.13326] [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: 05/07/2022] [Accepted: 07/04/2022] [Indexed: 06/15/2023]
Abstract
Phosphocholine (PCho) is an intermediate metabolite of nonplastid plant membranes that is essential for salt tolerance. However, how PCho metabolism modulates response to salt stress remains unknown. Here, we characterize the role of phosphoethanolamine N-methyltransferase 1 (PMT1) in salt stress tolerance in Arabidopsis thaliana using a T-DNA insertional mutant, gene-editing alleles, and complemented lines. The pmt1 mutants showed a severe inhibition of root elongation when exposed to salt stress, but exogenous ChoCl or lecithin rescued this defect. pmt1 also displayed altered glycerolipid metabolism under salt stress, suggesting that glycerolipids contribute to salt tolerance. Moreover, pmt1 mutants exhibited altered reactive oxygen species (ROS) accumulation and distribution, reduced cell division activity, and disturbed auxin distribution in the primary root compared with wild-type seedlings. We show that PMT1 expression is induced by salt stress and relies on the abscisic acid (ABA) signaling pathway, as this induction was abolished in the aba2-1 and pyl112458 mutants. However, ABA aggravated the salt sensitivity of the pmt1 mutants by perturbing ROS distribution in the root tip. Taken together, we propose that PMT1 is an important phosphoethanolamine N-methyltransferase participating in root development of primary root elongation under salt stress conditions by balancing ROS production and distribution through ABA signaling.
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Affiliation(s)
- Qi Yu He
- State Key Laboratory of Plant Physiology and Biochemistry, College of Life Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Jian Feng Jin
- State Key Laboratory of Plant Physiology and Biochemistry, College of Life Sciences, Zhejiang University, Hangzhou, 310058, China
| | - He Qiang Lou
- State Key Laboratory of Subtropical Silviculture, Zhejiang A & F University, Hangzhou, 311300, China
| | - Feng Feng Dang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, South China Agricultural University, Guangzhou, 510642, China
| | - Ji Ming Xu
- State Key Laboratory of Plant Physiology and Biochemistry, College of Life Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Shao Jian Zheng
- State Key Laboratory of Plant Physiology and Biochemistry, College of Life Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Jian Li Yang
- State Key Laboratory of Plant Physiology and Biochemistry, College of Life Sciences, Zhejiang University, Hangzhou, 310058, China
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22
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Bull T, Michelmore R. Molecular Determinants of in vitro Plant Regeneration: Prospects for Enhanced Manipulation of Lettuce ( Lactuca sativa L.). FRONTIERS IN PLANT SCIENCE 2022; 13:888425. [PMID: 35615120 PMCID: PMC9125155 DOI: 10.3389/fpls.2022.888425] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/02/2022] [Accepted: 03/31/2022] [Indexed: 05/12/2023]
Abstract
In vitro plant regeneration involves dedifferentiation and molecular reprogramming of cells in order to regenerate whole organs. Plant regeneration can occur via two pathways, de novo organogenesis and somatic embryogenesis. Both pathways involve intricate molecular mechanisms and crosstalk between auxin and cytokinin signaling. Molecular determinants of both pathways have been studied in detail in model species, but little is known about the molecular mechanisms controlling de novo shoot organogenesis in lettuce. This review provides a synopsis of our current knowledge on molecular determinants of de novo organogenesis and somatic embryogenesis with an emphasis on the former as well as provides insights into applying this information for enhanced in vitro regeneration in non-model species such as lettuce (Lactuca sativa L.).
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Affiliation(s)
- Tawni Bull
- The Genome Center, University of California, Davis, Davis, CA, United States
- Graduate Group in Horticulture and Agronomy, University of California, Davis, Davis, CA, United States
| | - Richard Michelmore
- The Genome Center, University of California, Davis, Davis, CA, United States
- Department of Plant Sciences, University of California, Davis, Davis, CA, United States
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23
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Timilsina R, Kim Y, Park S, Park H, Park SJ, Kim JH, Park JH, Kim D, Park YI, Hwang D, Lee JC, Woo HR. ORESARA 15, a PLATZ transcription factor, controls root meristem size through auxin and cytokinin signalling-related pathways. JOURNAL OF EXPERIMENTAL BOTANY 2022; 73:2511-2524. [PMID: 35139177 DOI: 10.1093/jxb/erac050] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2021] [Accepted: 02/04/2022] [Indexed: 06/14/2023]
Abstract
An optimal size of post-embryonic root apical meristem (RAM) is achieved by a balance between cell division and differentiation. Despite extensive research, molecular mechanisms underlying the coordination of cell division and differentiation are still fragmentary. Here, we report that ORESARA 15 (ORE15), an Arabidopsis PLANT A/T-RICH SEQUENCE-AND ZINC-BINDING PROTEIN (PLATZ) transcription factor preferentially expressed in the RAM, determines RAM size. Primary root length, RAM size, cell division rate, and stem cell niche activity were reduced in an ore15 loss-of-function mutant but enhanced in an activation-tagged line overexpressing ORE15, compared with wild type. ORE15 forms mutually positive and negative feedback loops with auxin and cytokinin signalling, respectively. Collectively, our findings imply that ORE15 controls RAM size by mediating the antagonistic interaction between auxin and cytokinin signalling-related pathways.
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Affiliation(s)
- Rupak Timilsina
- Department of New Biology, Daegu Gyeongbuk Institute of Science and Technology (DGIST), Daegu, Republic of Korea
- Center for Plant Aging Research, Institute for Basic Science, Daegu, Republic of Korea
| | - Yongmin Kim
- Department of Biological Sciences, Chungnam National University, Daejeon, Republic of Korea
| | - Sanghoon Park
- Department of New Biology, Daegu Gyeongbuk Institute of Science and Technology (DGIST), Daegu, Republic of Korea
| | - Hyunsoo Park
- Department of New Biology, Daegu Gyeongbuk Institute of Science and Technology (DGIST), Daegu, Republic of Korea
| | - Sung-Jin Park
- Center for Plant Aging Research, Institute for Basic Science, Daegu, Republic of Korea
| | - Jin Hee Kim
- Center for Plant Aging Research, Institute for Basic Science, Daegu, Republic of Korea
| | - Ji-Hwan Park
- School of Biological Sciences, Seoul National University, Seoul, Republic of Korea
| | - Doa Kim
- Center for Plant Aging Research, Institute for Basic Science, Daegu, Republic of Korea
| | - Youn-Il Park
- Department of Biological Sciences, Chungnam National University, Daejeon, Republic of Korea
| | - Daehee Hwang
- School of Biological Sciences, Seoul National University, Seoul, Republic of Korea
| | - Jong-Chan Lee
- Department of New Biology, Daegu Gyeongbuk Institute of Science and Technology (DGIST), Daegu, Republic of Korea
| | - Hye Ryun Woo
- Department of New Biology, Daegu Gyeongbuk Institute of Science and Technology (DGIST), Daegu, Republic of Korea
- New Biology Research Center, Daegu Gyeongbuk Institute of Science and Technology (DGIST), Daegu, Republic of Korea
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24
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Liu S, Strauss S, Adibi M, Mosca G, Yoshida S, Dello Ioio R, Runions A, Andersen TG, Grossmann G, Huijser P, Smith RS, Tsiantis M. Cytokinin promotes growth cessation in the Arabidopsis root. Curr Biol 2022; 32:1974-1985.e3. [PMID: 35354067 DOI: 10.1016/j.cub.2022.03.019] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2021] [Revised: 12/21/2021] [Accepted: 03/07/2022] [Indexed: 10/18/2022]
Abstract
The Arabidopsis root offers good opportunities to investigate how regulated cellular growth shapes different tissues and organs, a key question in developmental biology. Along the root's longitudinal axis, cells sequentially occupy different developmental states. Proliferative meristematic cells give rise to differentiating cells, which rapidly elongate in the elongation zone, then mature and stop growing in the differentiation zone. The phytohormone cytokinin contributes to this zonation by positioning the boundary between the meristem and the elongation zone, called the transition zone. However, the cellular growth profile underlying root zonation is not well understood, and the cellular mechanisms that mediate growth cessation remain unclear. By using time-lapse imaging, genetics, and computational analysis, we analyze the effect of cytokinin on root zonation and cellular growth. We found that cytokinin promotes growth cessation in the distal (shootward) elongation zone in conjunction with accelerating the transition from elongation to differentiation. We estimated cell-wall stiffness by using osmotic treatment experiments and found that cytokinin-mediated growth cessation is associated with cell-wall stiffening and requires the action of an auxin influx carrier, AUX1. Our measurement of growth and cell-wall mechanical properties at a cellular resolution reveal mechanisms via which cytokinin influences cell behavior to shape tissue patterns.
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Affiliation(s)
- Shanda Liu
- Department of Comparative Development and Genetics, Max Planck Institute for Plant Breeding Research, Carl-von-Linne Weg 10, 50829 Cologne, Germany
| | - Sören Strauss
- Department of Comparative Development and Genetics, Max Planck Institute for Plant Breeding Research, Carl-von-Linne Weg 10, 50829 Cologne, Germany
| | - Milad Adibi
- Department of Comparative Development and Genetics, Max Planck Institute for Plant Breeding Research, Carl-von-Linne Weg 10, 50829 Cologne, Germany
| | - Gabriella Mosca
- Department of Comparative Development and Genetics, Max Planck Institute for Plant Breeding Research, Carl-von-Linne Weg 10, 50829 Cologne, Germany; Physics Department, Technical University Munich, James-Franck-Str. 1/I, 85748 Garching b. Munich, Germany
| | - Saiko Yoshida
- Department of Comparative Development and Genetics, Max Planck Institute for Plant Breeding Research, Carl-von-Linne Weg 10, 50829 Cologne, Germany
| | - Raffaele Dello Ioio
- Dipartimento di Biologia e Biotecnologie, Laboratory of Functional Genomics and Proteomics of Model Systems, Università di Roma, Sapienza, via dei Sardi, 70, 00185 Rome, Italy
| | - Adam Runions
- Department of Comparative Development and Genetics, Max Planck Institute for Plant Breeding Research, Carl-von-Linne Weg 10, 50829 Cologne, Germany
| | - Tonni Grube Andersen
- Department of Plant-Microbe Interactions, Max Planck Institute for Plant Breeding Research, Carl-von-Linne Weg 10, 50829 Cologne, Germany
| | - Guido Grossmann
- Institute for Cell and Interaction Biology, Heinrich-Heine Universität Düsseldorf, Universitätsstraße 1, 40225 Düsseldorf, Germany
| | - Peter Huijser
- Department of Comparative Development and Genetics, Max Planck Institute for Plant Breeding Research, Carl-von-Linne Weg 10, 50829 Cologne, Germany
| | - Richard S Smith
- Department of Comparative Development and Genetics, Max Planck Institute for Plant Breeding Research, Carl-von-Linne Weg 10, 50829 Cologne, Germany; Department of Computational and Systems Biology, John Innes Centre, Norwich NR4 7UH, UK
| | - Miltos Tsiantis
- Department of Comparative Development and Genetics, Max Planck Institute for Plant Breeding Research, Carl-von-Linne Weg 10, 50829 Cologne, Germany.
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25
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Tian Y, Zhao N, Wang M, Zhou W, Guo J, Han C, Zhou C, Wang W, Wu S, Tang W, Fan M, Bai MY. Integrated regulation of periclinal cell division by transcriptional module of BZR1-SHR in Arabidopsis roots. THE NEW PHYTOLOGIST 2022; 233:795-808. [PMID: 34693527 DOI: 10.1111/nph.17824] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Accepted: 10/19/2021] [Indexed: 06/13/2023]
Abstract
The timing and extent of cell division are crucial for the correct patterning of multicellular organism. In Arabidopsis, root ground tissue maturation involves the periclinal cell division of the endodermis to generate two cell layers: endodermis and middle cortex. However, the molecular mechanism underlying this pattern formation remains unclear. Here, we report that phytohormone brassinosteroid (BR) and redox signal hydrogen peroxide (H2 O2 ) interdependently promote periclinal division during root ground tissue maturation by regulating the activity of SHORT-ROOT (SHR), a master regulator of root growth and development. BR-activated transcription factor BRASSINAZOLE RESISTANT1 (BZR1) directly binds to the promoter of SHR to induce its expression, and physically interacts with SHR to increase the transcripts of RESPIRATORY BURST OXIDASE HOMOLOGs (RBOHs) and elevate the levels of H2 O2 , which feedback enhances the interaction between BZR1 and SHR. Additionally, genetic analysis shows that SHR is required for BZR1-promoted periclinal division, and BZR1 enhances the promoting effects of SHR on periclinal division. Together, our finding reveals that the transcriptional module of BZR1-SHR fine-tunes periclinal division during root ground tissue maturation in response to hormone and redox signals.
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Affiliation(s)
- Yanchen Tian
- The Key Laboratory of Plant Development and Environmental Adaptation Biology, Ministry of Education, School of Life Science, Shandong University, Qingdao, 266237, China
| | - Na Zhao
- The Key Laboratory of Plant Development and Environmental Adaptation Biology, Ministry of Education, School of Life Science, Shandong University, Qingdao, 266237, China
| | - Minmin Wang
- The Key Laboratory of Plant Development and Environmental Adaptation Biology, Ministry of Education, School of Life Science, Shandong University, Qingdao, 266237, China
| | - Wenying Zhou
- The Key Laboratory of Plant Development and Environmental Adaptation Biology, Ministry of Education, School of Life Science, Shandong University, Qingdao, 266237, China
| | - Jieqiong Guo
- The Key Laboratory of Plant Development and Environmental Adaptation Biology, Ministry of Education, School of Life Science, Shandong University, Qingdao, 266237, China
| | - Chao Han
- The Key Laboratory of Plant Development and Environmental Adaptation Biology, Ministry of Education, School of Life Science, Shandong University, Qingdao, 266237, China
| | - Chuanen Zhou
- The Key Laboratory of Plant Development and Environmental Adaptation Biology, Ministry of Education, School of Life Science, Shandong University, Qingdao, 266237, China
| | - Wenfei Wang
- College of Horticulture, College of Life Sciences, Hai xia Institute of Science and Technology, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
| | - Shuang Wu
- College of Horticulture, College of Life Sciences, Hai xia Institute of Science and Technology, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
| | - Wenqiang Tang
- The Key Laboratory of Molecular and Cellular Biology, Ministry of Education, Hebei Collaboration Innovation Center for Cell Signaling, Hebei Key Laboratory of Molecular and Cellular Biology, College of Life Sciences, Hebei Normal University, Shijiazhuang, 050024, China
| | - Min Fan
- The Key Laboratory of Plant Development and Environmental Adaptation Biology, Ministry of Education, School of Life Science, Shandong University, Qingdao, 266237, China
| | - Ming-Yi Bai
- The Key Laboratory of Plant Development and Environmental Adaptation Biology, Ministry of Education, School of Life Science, Shandong University, Qingdao, 266237, China
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Shtin M, Dello Ioio R, Del Bianco M. It's Time for a Change: The Role of Gibberellin in Root Meristem Development. FRONTIERS IN PLANT SCIENCE 2022; 13:882517. [PMID: 35592570 PMCID: PMC9112047 DOI: 10.3389/fpls.2022.882517] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2022] [Accepted: 04/14/2022] [Indexed: 05/21/2023]
Abstract
One of the most amazing characteristics of plants is their ability to grow and adapt their development to environmental changes. This fascinating feature is possible thanks to the activity of meristems, tissues that contain lasting self-renewal stem cells. Because of its simple and symmetric structure, the root meristem emerged as a potent system to uncover the developmental mechanisms behind the development of the meristems. The root meristem is formed during embryogenesis and sustains root growth for all the plant's lifetime. In the last decade, gibberellins have emerged as a key regulator for root meristem development. This phytohormone functions as a molecular clock for root development. This mini review discusses the latest advances in understanding the role of gibberellin in root development and highlights the central role of this hormone as developmental timer.
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Affiliation(s)
- Margaryta Shtin
- Department of Biology and Biotechnology “C. Darwin”, Laboratory of Functional Genomics and Proteomics of Model Systems, University of Rome “Sapienza”, Rome, Italy
| | - Raffaele Dello Ioio
- Department of Biology and Biotechnology “C. Darwin”, Laboratory of Functional Genomics and Proteomics of Model Systems, University of Rome “Sapienza”, Rome, Italy
- *Correspondence: Raffaele Dello Ioio,
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27
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Kościelniak P, Glazińska P, Kȩsy J, Zadworny M. Formation and Development of Taproots in Deciduous Tree Species. FRONTIERS IN PLANT SCIENCE 2021; 12:772567. [PMID: 34925417 PMCID: PMC8675582 DOI: 10.3389/fpls.2021.772567] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/08/2021] [Accepted: 10/27/2021] [Indexed: 06/14/2023]
Abstract
Trees are generally long-lived and are therefore exposed to numerous episodes of external stimuli and adverse environmental conditions. In certain trees e.g., oaks, taproots evolved to increase the tree's ability to acquire water from deeper soil layers. Despite the significant role of taproots, little is known about the growth regulation through internal factors (genes, phytohormones, and micro-RNAs), regulating taproot formation and growth, or the effect of external factors, e.g., drought. The interaction of internal and external stimuli, involving complex signaling pathways, regulates taproot growth during tip formation and the regulation of cell division in the root apical meristem (RAM). Assuming that the RAM is the primary regulatory center responsible for taproot growth, factors affecting the RAM function provide fundamental information on the mechanisms affecting taproot development.
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Affiliation(s)
| | - Paulina Glazińska
- Department of Plant Physiology and Biotechnology, Faculty of Biological and Veterinary Sciences, Nicolaus Copernicus University, Toruń, Poland
- Centre for Modern Interdisciplinary Technologies, Nicolaus Copernicus University, Toruń, Poland
| | - Jacek Kȩsy
- Department of Plant Physiology and Biotechnology, Faculty of Biological and Veterinary Sciences, Nicolaus Copernicus University, Toruń, Poland
| | - Marcin Zadworny
- Institute of Dendrology, Polish Academy of Sciences, Kórnik, Poland
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28
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Gaddam SR, Bhatia C, Sharma A, Badola PK, Saxena G, Trivedi PK. miR775 integrates light, sucrose and auxin associated pathways to regulate root growth in Arabidopsis thaliana. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2021; 313:111073. [PMID: 34763865 DOI: 10.1016/j.plantsci.2021.111073] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/16/2021] [Revised: 09/23/2021] [Accepted: 09/28/2021] [Indexed: 06/13/2023]
Abstract
MicroRNAs (miRNAs), a class of single-stranded non-coding RNA of 20-24 nucleotides, regulate gene expression by target gene transcript cleavage or translation inhibition. The phytohormone auxin is a crucial regulator of almost every process involved in plant growth and development. Several studies have demonstrated the involvement of miRNA(s) in the regulation of the auxin signaling pathway and plant development. However, very few studies have identified the auxin-mediated regulation of miRNA(s). In this study, we reveal the detailed mechanism of auxin-mediated regulation of the cell wall-related miR775- Galactosyl transferase (GalT) module, which plays an important role in root growth in Arabidopsis thaliana. We also showed two interdependent mechanisms by which miR775 regulates root growth: miR775-GalT and light-mediated sucrose-dependent pathways. Treatment of GUS reporter lines with Indole Acetic Acid (IAA), sucrose, and light apparently enhanced the abundance of miR775 in root tissue. miR775 overexpressing (miR775OX) lines showed changes in root architecture, including increased primary root growth and root hair, by targeting GalT. miR775OX lines also showed tolerance toward low Pi. These results provide new insights into the auxin regulation of cell wall-related miR775 and suggest its significant role in plant root growth and development by modifying the cell wall.
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Affiliation(s)
- Subhash Reddy Gaddam
- CSIR-National Botanical Research Institute, Council of Scientific and Industrial Research (CSIR-NBRI), Rana Pratap Marg, Lucknow, 226001, India; Department of Botany, University of Lucknow, Lucknow, 226007, India
| | - Chitra Bhatia
- CSIR-National Botanical Research Institute, Council of Scientific and Industrial Research (CSIR-NBRI), Rana Pratap Marg, Lucknow, 226001, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Ashish Sharma
- CSIR-National Botanical Research Institute, Council of Scientific and Industrial Research (CSIR-NBRI), Rana Pratap Marg, Lucknow, 226001, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Poorwa Kamal Badola
- CSIR-National Botanical Research Institute, Council of Scientific and Industrial Research (CSIR-NBRI), Rana Pratap Marg, Lucknow, 226001, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Gauri Saxena
- Department of Botany, University of Lucknow, Lucknow, 226007, India
| | - Prabodh Kumar Trivedi
- CSIR-National Botanical Research Institute, Council of Scientific and Industrial Research (CSIR-NBRI), Rana Pratap Marg, Lucknow, 226001, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India; CSIR- Central Institute of Medicinal and Aromatic Plants (CSIR-CIMAP) P.O. CIMAP, Near Kukrail Picnic Spot, Lucknow, 226 015, India.
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Dhar S, Kim H, Segonzac C, Lee JY. The Danger-Associated Peptide PEP1 Directs Cellular Reprogramming in the Arabidopsis Root Vascular System. Mol Cells 2021; 44:830-842. [PMID: 34764230 PMCID: PMC8627833 DOI: 10.14348/molcells.2021.0203] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Revised: 09/07/2021] [Accepted: 09/22/2021] [Indexed: 11/29/2022] Open
Abstract
When perceiving microbe-associated molecular patterns (MAMPs) or plant-derived damage-associated molecular patterns (DAMPs), plants alter their root growth and development by displaying a reduction in the root length and the formation of root hairs and lateral roots. The exogenous application of a MAMP peptide, flg22, was shown to affect root growth by suppressing meristem activity. In addition to MAMPs, the DAMP peptide PEP1 suppresses root growth while also promoting root hair formation. However, the question of whether and how these elicitor peptides affect the development of the vascular system in the root has not been explored. The cellular receptors of PEP1, PEPR1 and PEPR2 are highly expressed in the root vascular system, while the receptors of flg22 (FLS2) and elf18 (EFR) are not. Consistent with the expression patterns of PEP1 receptors, we found that exogenously applied PEP1 has a strong impact on the division of stele cells, leading to a reduction of these cells. We also observed the alteration in the number and organization of cells that differentiate into xylem vessels. These PEP1-mediated developmental changes appear to be linked to the blockage of symplastic connections triggered by PEP1. PEP1 dramatically disrupts the symplastic movement of free green fluorescence protein (GFP) from phloem sieve elements to neighboring cells in the root meristem, leading to the deposition of a high level of callose between cells. Taken together, our first survey of PEP1-mediated vascular tissue development provides new insights into the PEP1 function as a regulator of cellular reprogramming in the Arabidopsis root vascular system.
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Affiliation(s)
- Souvik Dhar
- School of Biological Sciences, College of Natural Science, Seoul National University, Seoul 08826, Korea
| | - Hyoujin Kim
- School of Biological Sciences, College of Natural Science, Seoul National University, Seoul 08826, Korea
| | - Cécile Segonzac
- Department of Agriculture, Forestry and Bioresources, Seoul National University, Seoul 00826, Korea
- Plant Genomics and Breeding Institute, Seoul National University, Seoul 08826, Korea
- Plant Immunity Research Center, Seoul National University, Seoul 08826, Korea
| | - Ji-Young Lee
- School of Biological Sciences, College of Natural Science, Seoul National University, Seoul 08826, Korea
- Plant Genomics and Breeding Institute, Seoul National University, Seoul 08826, Korea
- Plant Immunity Research Center, Seoul National University, Seoul 08826, Korea
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Xu X, Zheng C, Lu D, Song CP, Zhang L. Phase separation in plants: New insights into cellular compartmentalization. JOURNAL OF INTEGRATIVE PLANT BIOLOGY 2021; 63:1835-1855. [PMID: 34314106 DOI: 10.1111/jipb.13152] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2021] [Accepted: 07/16/2021] [Indexed: 05/16/2023]
Abstract
A fundamental challenge for cells is how to coordinate various biochemical reactions in space and time. To achieve spatiotemporal control, cells have developed organelles that are surrounded by lipid bilayer membranes. Further, membraneless compartmentalization, a process induced by dynamic physical association of biomolecules through phase transition offers another efficient mechanism for intracellular organization. While our understanding of phase separation was predominantly dependent on yeast and animal models, recent findings have provided compelling evidence for emerging roles of phase separation in plants. In this review, we first provide an overview of the current knowledge of phase separation, including its definition, biophysical principles, molecular features and regulatory mechanisms. Then we summarize plant-specific phase separation phenomena and describe their functions in plant biological processes in great detail. Moreover, we propose that phase separation is an evolutionarily conserved and efficient mechanism for cellular compartmentalization which allows for distinct metabolic processes and signaling pathways, and is especially beneficial for the sessile lifestyle of plants to quickly and efficiently respond to the changing environment.
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Affiliation(s)
- Xiumei Xu
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Henan University, Kaifeng, 475004, China
| | - Canhui Zheng
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Henan University, Kaifeng, 475004, China
| | - Dandan Lu
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Henan University, Kaifeng, 475004, China
| | - Chun-Peng Song
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Henan University, Kaifeng, 475004, China
| | - Lixin Zhang
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Henan University, Kaifeng, 475004, China
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Abstract
The plant hormones brassinosteroids (BRs) and auxin interact to regulate root meristem size. A new study reveals dual and opposing roles for BRs in auxin biosynthesis and signaling output in the Arabidopsis root epidermis, demonstrating that epidermis-derived BR signaling is required for root meristem maintenance through its effect on auxin signaling.
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Ubogoeva EV, Zemlyanskaya EV, Xu J, Mironova V. Mechanisms of stress response in the root stem cell niche. JOURNAL OF EXPERIMENTAL BOTANY 2021; 72:6746-6754. [PMID: 34111279 PMCID: PMC8513250 DOI: 10.1093/jxb/erab274] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/26/2021] [Accepted: 06/09/2021] [Indexed: 05/25/2023]
Abstract
As plants are sessile organisms unable to escape from environmental hazards, they need to adapt for survival. The stem cell niche in the root apical meristem is particularly sensitive to DNA damage induced by environmental stresses such as chilling, flooding, wounding, UV, and irradiation. DNA damage has been proven to cause stem cell death, with stele stem cells being the most vulnerable. Stress also induces the division of quiescent center cells. Both reactions disturb the structure and activity of the root stem cell niche temporarily; however, this preserves root meristem integrity and function in the long term. Plants have evolved many mechanisms that ensure stem cell niche maintenance, recovery, and acclimation, allowing them to survive in a changing environment. Here, we provide an overview of the cellular and molecular aspects of stress responses in the root stem cell niche.
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Affiliation(s)
| | - Elena V Zemlyanskaya
- Institute of Cytology and Genetics, Novosibirsk, Russia
- Novosibirsk State University, Novosibirsk, Russia
| | - Jian Xu
- Department of Plant Systems Physiology, Institute for Water and Wetland Research, Radboud University, Heyendaalseweg 135, 6525 AJ, Nijmegen, The Netherlands
| | - Victoria Mironova
- Institute of Cytology and Genetics, Novosibirsk, Russia
- Department of Plant Systems Physiology, Institute for Water and Wetland Research, Radboud University, Heyendaalseweg 135, 6525 AJ, Nijmegen, The Netherlands
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33
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Leonardo B, Emanuela T, Letizia MM, Antonella M, Marco M, Fabrizio A, Beatrice BM, Adriana C. Cadmium affects cell niches maintenance in Arabidopsis thaliana post-embryonic shoot and root apical meristem by altering the expression of WUS/WOX homolog genes and cytokinin accumulation. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2021; 167:785-794. [PMID: 34530323 DOI: 10.1016/j.plaphy.2021.09.014] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/08/2021] [Revised: 09/08/2021] [Accepted: 09/09/2021] [Indexed: 06/13/2023]
Abstract
Cadmium (Cd) is one of the most widespread polluting heavy metals in both terrestrial and aquatic environments and represents an extremely significant pollutant causing severe environmental and social problems due to its high toxicity and large solubility in water. In plants, the root is the first organ that get in contact with Cd. It is absorbed by the root system and translocated to the shoot and leaves through xylem loading, causing a variety of genetic, biochemical, and physiological damages. Cd inhibits both the root and shoot growth, but the mechanisms underlying this inhibition remain elusive. In this context in the present work we focused the attention on the effects of Cd on meristem size and organization of both shoot and root. To this aim morpho-histological and molecular analyses were carried out on 5 days old seedlings exposed or not to Cd (100 μM and 150 μM for 24) of wild type and transgenic lines expressing molecular markers with an important role in shoot and root pattern organization. More precisely, we monitored the expression pattern of WUS/CLV3 and WOX5 transcription factors involved in the establishment and maintenance of stem cell niche and the control of meristem size and of TCSn::GFP cytokinin-sensitive sensor as relevant components of hormone circuit controlling shoot and root growth. The results highlighted that the treatments with Cd impacts shoot and root size and shape by altering the paralogous WOX genes expression via cytokinin accumulation.
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Affiliation(s)
- Bruno Leonardo
- Dipartimento di Biologia, Ecologia e Scienza della Terra, Università della Calabria (DiBEST-UNICAL), Arcavacata di Rende, Italy.
| | - Talarico Emanuela
- Dipartimento di Biologia, Ecologia e Scienza della Terra, Università della Calabria (DiBEST-UNICAL), Arcavacata di Rende, Italy
| | - Madeo Maria Letizia
- Dipartimento di Biologia, Ecologia e Scienza della Terra, Università della Calabria (DiBEST-UNICAL), Arcavacata di Rende, Italy
| | - Muto Antonella
- Dipartimento di Biologia, Ecologia e Scienza della Terra, Università della Calabria (DiBEST-UNICAL), Arcavacata di Rende, Italy
| | - Minervino Marco
- Dipartimento di Biologia, Ecologia e Scienza della Terra, Università della Calabria (DiBEST-UNICAL), Arcavacata di Rende, Italy
| | - Araniti Fabrizio
- Dipartimento di Scienze Agrarie e Ambientali - Produzione, Territorio, Agroenergia, Università Statale di Milano, Via Celoria n°2, 20133, Milano, Italy
| | - Bitonti Maria Beatrice
- Dipartimento di Biologia, Ecologia e Scienza della Terra, Università della Calabria (DiBEST-UNICAL), Arcavacata di Rende, Italy
| | - Chiappetta Adriana
- Dipartimento di Biologia, Ecologia e Scienza della Terra, Università della Calabria (DiBEST-UNICAL), Arcavacata di Rende, Italy
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Supraoptimal Brassinosteroid Levels Inhibit Root Growth by Reducing Root Meristem and Cell Elongation in Rice. PLANTS 2021; 10:plants10091962. [PMID: 34579493 PMCID: PMC8469756 DOI: 10.3390/plants10091962] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/26/2021] [Revised: 09/13/2021] [Accepted: 09/17/2021] [Indexed: 11/25/2022]
Abstract
Root growth depends on cell proliferation and cell elongation at the root meristem, which are controlled by plant hormones and nutrient availability. As a foraging strategy, rice (Oryza sativa L.) grows longer roots when nitrogen (N) is scarce. However, how the plant steroid hormone brassinosteroid (BR) regulates rice root meristem development and responses to N deficiency remains unclear. Here, we show that BR has a negative effect on meristem size and a dose-dependent effect on cell elongation in roots of rice seedlings treated with exogenous BR (24-epicastasterone, ECS) and the BR biosynthesis inhibitor propiconazole (PPZ). A genome-wide transcriptome analysis identified 4110 and 3076 differentially expressed genes in response to ECS and PPZ treatments, respectively. The gene ontology (GO) analysis shows that terms related to cell proliferation and cell elongation were enriched among the ECS-repressed genes. Furthermore, microscopic analysis of ECS- and PPZ-treated roots grown under N-sufficient and N-deficient conditions demonstrates that exogenous BR or PPZ application could not enhance N deficiency-mediated root elongation promotion as the treatments could not promote root meristem size and cell elongation simultaneously. Our study demonstrates that optimal levels of BR in the rice root meristem are crucial for optimal root growth and the foraging response to N deficiency.
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35
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Identification and Characterization of Short Crown Root 8, a Temperature-Sensitive Mutant Associated with Crown Root Development in Rice. Int J Mol Sci 2021; 22:ijms22189868. [PMID: 34576034 PMCID: PMC8465104 DOI: 10.3390/ijms22189868] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2021] [Revised: 09/04/2021] [Accepted: 09/08/2021] [Indexed: 11/17/2022] Open
Abstract
Crown roots are essential for plants to obtain water and nutrients, perceive environmental changes, and synthesize plant hormones. In this study, we identified and characterized short crown root 8 (scr8), which exhibited a defective phenotype of crown root and vegetative development. Temperature treatment showed that scr8 was sensitive to temperature and that the mutant phenotypes were rescued when grown under low temperature condition (20 °C). Histological and EdU staining analysis showed that the crown root formation was hampered and that the root meristem activity was decreased in scr8. With map-based cloning strategy, the SCR8 gene was fine-mapped to an interval of 126.4 kb on chromosome 8. Sequencing analysis revealed that the sequence variations were only found in LOC_Os08g14850, which encodes a CC-NBS-LRR protein. Expression and inoculation test analysis showed that the expression level of LOC_Os08g14850 was significantly decreased under low temperature (20 °C) and that the resistance to Xanthomonas oryzae pv. Oryzae (Xoo) was enhanced in scr8. These results indicated that LOC_Os08g14850 may be the candidate of SCR8 and that its mutation activated the plant defense response, resulting in a crown root growth defect.
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36
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Gomez Mansur NM, Pena LB, Bossio AE, Lewi DM, Beznec AY, Blumwald E, Arbona V, Gómez-Cadenas A, Benavides MP, Gallego SM. An isopentenyl transferase transgenic wheat isoline exhibits less seminal root growth impairment and a differential metabolite profile under Cd stress. PHYSIOLOGIA PLANTARUM 2021; 173:223-234. [PMID: 33629739 DOI: 10.1111/ppl.13366] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/21/2020] [Revised: 01/05/2021] [Accepted: 02/08/2021] [Indexed: 06/12/2023]
Abstract
Cadmium is one of the most important contaminants and it induces severe plant growth restriction. In this study, we analyzed the metabolic changes associated with root growth restriction caused by cadmium in the early seminal root apex of wheat. Our study included two genotypes: the commercial variety ProINTA Federal (WT) and the PSARK ::IPT (IPT) line which exhibit high-grade yield performance under water deficit. Root tips of seedlings grown for 72 h without or with 10 μM CdCl2 (Cd-WT and Cd-IPT) were compared. Root length reduction was more severe in Cd-WT than Cd-IPT. Cd decreased superoxide dismutase activity in both lines and increased catalase activity only in the WT. In Cd-IPT, ascorbate and guaiacol peroxidase activities raised compared to Cd-WT. The hormonal homeostasis was altered by the metal, with significant decreases in abscisic acid, jasmonic acid, 12-oxophytodienoic acid, gibberellins GA20, and GA7 levels. Increases in flavonoids and phenylamides were also found. Root growth impairment was not associated with a decrease in expansin (EXP) transcripts. On the contrary, TaEXPB8 expression increased in the WT treated by Cd. Our findings suggest that the line expressing the PSARK ::IPT construction increased the homeostatic range to cope with Cd stress, which is visible by a lesser reduction of the root elongation compared to WT plants. The decline of root growth produced by Cd was associated with hormonal imbalance at the root apex level. We hypothesize that activation of phenolic secondary metabolism could enhance antioxidant defenses and contribute to cell wall reinforcement to deal with Cd toxicity.
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Affiliation(s)
- Nabila M Gomez Mansur
- Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires-Consejo Nacional de Investigaciones Científicas y Técnicas, Instituto de Química y Fisicoquímica Biológicas "Profesor Alejandro C. Paladini" (IQUIFIB), Buenos Aires, Argentina
| | - Liliana B Pena
- Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires-Consejo Nacional de Investigaciones Científicas y Técnicas, Instituto de Química y Fisicoquímica Biológicas "Profesor Alejandro C. Paladini" (IQUIFIB), Buenos Aires, Argentina
| | - Adrián E Bossio
- Instituto de Genética E. A. Favret, CICVyA, INTA. N. Repetto y de los Reseros s/n, Hurlingham, Argentina
| | - Dalia M Lewi
- Instituto de Genética E. A. Favret, CICVyA, INTA. N. Repetto y de los Reseros s/n, Hurlingham, Argentina
| | - Ailin Y Beznec
- Instituto de Genética E. A. Favret, CICVyA, INTA. N. Repetto y de los Reseros s/n, Hurlingham, Argentina
| | - Eduardo Blumwald
- Department of Plant Sciences, University of California, California, USA
| | - Vicent Arbona
- Departament de Ciències Agràries i del Medi Natural, Ecofisiologia i Biotecnologia. Campus Riu Sec, Universitat Jaume I, Castelló de la Plana, Spain
| | - Aurelio Gómez-Cadenas
- Departament de Ciències Agràries i del Medi Natural, Ecofisiologia i Biotecnologia. Campus Riu Sec, Universitat Jaume I, Castelló de la Plana, Spain
| | - María P Benavides
- Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires-Consejo Nacional de Investigaciones Científicas y Técnicas, Instituto de Química y Fisicoquímica Biológicas "Profesor Alejandro C. Paladini" (IQUIFIB), Buenos Aires, Argentina
| | - Susana M Gallego
- Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires-Consejo Nacional de Investigaciones Científicas y Técnicas, Instituto de Química y Fisicoquímica Biológicas "Profesor Alejandro C. Paladini" (IQUIFIB), Buenos Aires, Argentina
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37
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He A, Jiang J, Ding J, Sheng GD. Blocking effect of fullerene nanoparticles (nC 60) on the plant cell structure and its phytotoxicity. CHEMOSPHERE 2021; 278:130474. [PMID: 33839397 DOI: 10.1016/j.chemosphere.2021.130474] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2021] [Revised: 03/18/2021] [Accepted: 03/30/2021] [Indexed: 06/12/2023]
Abstract
Blockage of nanoparticles on plant pore structures might produce phytotoxicity and affect plant uptake indirectly. This study examined the blocking and phytotoxic effects of fullerene nanoparticles (nC60) on plants at the cellular level. The malondialdehyde content in plant was normal during nC60 exposure, implying that nC60 caused no acute phytotoxicity, while the normalized relative transpiration significantly decreased, showing that the pore structure of roots was seriously blocked by nC60. High power optical microscopy and transmission electron microscope showed that root endothelial cells were squeezed, and inner wall structures were damaged by the extrusion of nanoparticles. Low nC60 concentrations inhibited root uptake of lindane, whereas high nC60 concentrations promoted root uptake of lindane, indicating that serious pore blocking by nC60 damaged root cell structure and hence ready transport of lindane from roots to shoots. Significant alterations of fatty acid (FA) saturation degree of root cell membrane indicated that nC60 led to phytotoxicity in the root cell membrane after long-term exposure and nC60 produced phytotoxicity in the process of blocking root pore structures and interfering with cell membrane fluidity. Moreover, the plant cell structures under phytotoxicity were more likely to be damaged mechanically by the extrusion of nanoparticles. These findings may be helpful to better understand the transport pathways of nanoparticles in plants, the phytotoxicity of nanoparticles and the potential risks of nanomaterials used in agriculture.
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Affiliation(s)
- Anfei He
- School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou, 215009, China
| | - Jing Jiang
- School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou, 215009, China
| | - Jing Ding
- School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou, 215009, China
| | - G Daniel Sheng
- School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou, 215009, China.
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38
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Kruglova NN, Titova GE, Seldimirova OA, Zinatullina AE. Cytophysiological Features of the Cereal-Based Experimental System “Embryo In Vivo–Callus In Vitro”. Russ J Dev Biol 2021. [DOI: 10.1134/s1062360421040044] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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39
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Shao Y, Yu X, Xu X, Li Y, Yuan W, Xu Y, Mao C, Zhang S, Xu J. The YDA-MKK4/MKK5-MPK3/MPK6 Cascade Functions Downstream of the RGF1-RGI Ligand-Receptor Pair in Regulating Mitotic Activity in Root Apical Meristem. MOLECULAR PLANT 2020; 13:1608-1623. [PMID: 32916336 DOI: 10.1016/j.molp.2020.09.004] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/06/2020] [Revised: 08/16/2020] [Accepted: 09/07/2020] [Indexed: 05/26/2023]
Abstract
The mitotic activity of root apical meristem (RAM) is critical to primary root growth and development. Previous studies have identified the roles of ROOT GROWTH FACTOR 1 (RGF1), a peptide ligand, and its receptors, RGF1 INSENSITIVEs (RGIs), a clade of five leucine-rich-repeat receptor-like kinases, in promoting cell division in the RAM, which determines the primary root length. However, the downstream signaling components remain elusive. In this study, we identify a complete mitogen-activated protein kinase (MAPK or MPK) cascade, composed of YDA, MKK4/MKK5, and MPK3/MPK6, that functions downstream of the RGF1-RGI ligand-receptor pair. Similar to the rgi1/2/3/4/5 quintuple mutant, loss-of-function mutants of MPK3 and MPK6, MKK4 and MKK5, or YDA show a short-root phenotype, which is associated with reduced mitotic activity and lower expression of PLETHORA 1 (PLT1)/PLT2 in the RAM. Furthermore, MPK3/MPK6 activation in response to exogenous RGF1 treatment is impaired in the rgi1/2/3/4/5 quintuple, yda single, and mkk4 mkk5 double mutants. Epistatic analyses demonstrated that the expression of constitutively active MKK4, MKK5, or YDA driven by the RGI2 promoter can rescue the short-root phenotype of the rgi1/2/3/4/5 mutant. Taken together, these results suggest that the YDA-MKK4/MKK5-MPK3/MPK6 cascade functions downstream of the RGF1-RGI ligand-receptor pair and upstream of PLT1/PLT2 to modulate the stem cell population and primary root growth in Arabidopsis.
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Affiliation(s)
- Yiming Shao
- State Key Laboratory of Plant Physiology and Biochemistry, College of Life Sciences, Zhejiang University, Hangzhou, Zhejiang 310058, China
| | - Xinxing Yu
- State Key Laboratory of Plant Physiology and Biochemistry, College of Life Sciences, Zhejiang University, Hangzhou, Zhejiang 310058, China
| | - Xuwen Xu
- State Key Laboratory of Plant Physiology and Biochemistry, College of Life Sciences, Zhejiang University, Hangzhou, Zhejiang 310058, China
| | - Yong Li
- State Key Laboratory of Plant Physiology and Biochemistry, College of Life Sciences, Zhejiang University, Hangzhou, Zhejiang 310058, China
| | - Wenxin Yuan
- State Key Laboratory of Plant Physiology and Biochemistry, College of Life Sciences, Zhejiang University, Hangzhou, Zhejiang 310058, China
| | - Yan Xu
- State Key Laboratory of Plant Physiology and Biochemistry, College of Life Sciences, Zhejiang University, Hangzhou, Zhejiang 310058, China
| | - Chuanzao Mao
- State Key Laboratory of Plant Physiology and Biochemistry, College of Life Sciences, Zhejiang University, Hangzhou, Zhejiang 310058, China
| | - Shuqun Zhang
- Division of Biochemistry, University of Missouri, Columbia, MO 65211, USA.
| | - Juan Xu
- State Key Laboratory of Plant Physiology and Biochemistry, College of Life Sciences, Zhejiang University, Hangzhou, Zhejiang 310058, China.
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40
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Guo W, Chen L, Herrera-Estrella L, Cao D, Tran LSP. Altering Plant Architecture to Improve Performance and Resistance. TRENDS IN PLANT SCIENCE 2020; 25:1154-1170. [PMID: 32595089 DOI: 10.1016/j.tplants.2020.05.009] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/18/2020] [Revised: 05/11/2020] [Accepted: 05/26/2020] [Indexed: 06/11/2023]
Abstract
High-stress resistance and yield are major goals in crop cultivation, which can be addressed by modifying plant architecture. Significant progress has been made in recent years to understand how plant architecture is controlled under various growth conditions, recognizing the central role phytohormones play in response to environmental stresses. miRNAs, transcription factors, and other associated proteins regulate plant architecture, mainly via the modulation of hormone homeostasis and signaling. To generate crop plants of ideal architecture, we propose simultaneous editing of multiple genes involved in the regulatory networks associated with plant architecture as a feasible strategy. This strategy can help to address the need to increase grain yield and/or stress resistance under the pressures of the ever-increasing world population and climate change.
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Affiliation(s)
- Wei Guo
- Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture and Rural Affairs, Oil Crops Research Institute, Chinese Academy of Agricultural Sciences, Wuhan 430062, China
| | - Limiao Chen
- Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture and Rural Affairs, Oil Crops Research Institute, Chinese Academy of Agricultural Sciences, Wuhan 430062, China
| | - Luis Herrera-Estrella
- The Unidad de Genomica Avanzada (Langebio), Centro de Investigación y de Estudios Avanzados del IPN, Irapuato, Guanajuato, Mexico; Institute of Genomics for Crop Abiotic Stress Tolerance, Texas Tech University, TX, USA
| | - Dong Cao
- Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture and Rural Affairs, Oil Crops Research Institute, Chinese Academy of Agricultural Sciences, Wuhan 430062, China.
| | - Lam-Son Phan Tran
- Institute of Research and Development, Duy Tan University, 03 Quang Trung, Da Nang 550000, Vietnam; Stress Adaptation Research Unit, RIKEN Center for Sustainable Resource Science, 1-7-22, Suehiro-cho, Tsurumi, Yokohama 230-0045, Japan.
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41
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Dickey JR, Fordyce JA, Lebeis SL. Bacterial communities of the Salvia lyrata rhizosphere explained by spatial structure and sampling grain. MICROBIAL ECOLOGY 2020; 80:846-858. [PMID: 32888042 DOI: 10.1007/s00248-020-01594-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/26/2019] [Accepted: 08/31/2020] [Indexed: 06/11/2023]
Abstract
Advancements in molecular technology have reduced the constraints that the grain of observation, or the spatial resolution and volume of the sampling unit, has on the characterization of plant-associated microbiomes. With discrete ecological sampling and massive parallel sequencing, we can more precisely portray microbiome community assembly and microbial recruitment to host tissue over space and time. Here, we differentiate rarefied community richness and relative abundance in bacterial microbiomes of Salvia lyrata dependent on three spatial depths, which are discrete physical distances from the soil surface within the rhizosphere microhabitat as a proxy for the root system zones. To assess the impact of sampling grain on rarefied community richness and relative abundance, we evaluated the variation of these metrics between samples pooled prior to DNA extraction and samples pooled after sequencing. A distance-based redundancy analysis with the quantitative Jaccard distance revealed that rhizosphere microbiomes vary in richness between rhizosphere soil depths. At all orders of diversity, rarefied microbial richness was consistently lowest at the deepest samples taken (approximately 4 cm from soil surface) in comparison with other rhizosphere soil depths. We additionally show that finer grain sampling (i.e., three samples of equal volume pooled after sequencing) recovers greater microbial richness when using 16S rRNA gene sequencing to describe microbial communities found within the rhizosphere system. In summary, to further elucidate the extent host-specific microbiomes assemble within the rhizosphere, the grain at which bacterial communities are sampled should reflect and encompass fine-scale heterogeneity of the system.
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Affiliation(s)
- Jonathan R Dickey
- Department of Ecology and Evolutionary Biology, The University of Tennessee, 569 Dabney Hall, Knoxville, TN, 37996, USA.
| | - James A Fordyce
- Department of Ecology and Evolutionary Biology, The University of Tennessee, 569 Dabney Hall, Knoxville, TN, 37996, USA
| | - Sarah L Lebeis
- Department of Microbiology, The University of Tennessee, 307 Ken and Blaire Mossman Bldg., Knoxville, TN, 37996, USA
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Shen N, Jing Y, Tu G, Fu A, Lan W. Danger-Associated Peptide Regulates Root Growth by Promoting Protons Extrusion in an AHA2-Dependent Manner in Arabidopsis. Int J Mol Sci 2020; 21:ijms21217963. [PMID: 33120933 PMCID: PMC7663391 DOI: 10.3390/ijms21217963] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2020] [Revised: 10/02/2020] [Accepted: 10/12/2020] [Indexed: 11/16/2022] Open
Abstract
Plant elicitor peptides (Peps) are damage/danger-associated molecular patterns (DAMPs) that are derived from precursor proteins PROPEPs and perceived by a pair of leucine-rich repeat receptor-like kinases (LRR-RLKs), PEPR1 and PEPR2, to enhance innate immunity and to inhibit root growth in Arabidopsis thaliana. In this study, we show that Arabidopsis Pep1 inhibits the root growth by interfering with pH signaling, as acidic condition increased, but neutral and alkaline conditions decreased the Pep1 effect on inhibiting the root growth. The perception of Pep1 to PEPRs activated the plasma membrane-localized H+-ATPases (PM H+-ATPases) -the pump proton in plant cell-to extrude the protons into apoplast, and induced an overly acidic environment in apoplastic space, which further promoted the cell swelling in root apex and inhibited root growth. Furthermore, we revealed that pump proton AUTOINHIBITED H+-ATPase 2 (AHA2) physically interacted with PEPR2 and served downstream of the Pep1-PEPRs signaling pathway to regulate Pep1-induced protons extrusion and root growth inhibition. In conclusion, this study demonstrates a previously unrecognized signaling crosstalk between Pep1 and pH signaling to regulate root growth.
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Affiliation(s)
- Nuo Shen
- State Key Laboratory for Pharmaceutical Biotechnology, College of Life Sciences, Nanjing University, Nanjing 210093, China; (N.S.); (G.T.)
| | - Yanping Jing
- College of Life Sciences, Northwest University, Xi’an 710069, China;
| | - Guoqing Tu
- State Key Laboratory for Pharmaceutical Biotechnology, College of Life Sciences, Nanjing University, Nanjing 210093, China; (N.S.); (G.T.)
| | - Aigen Fu
- College of Life Sciences, Northwest University, Xi’an 710069, China;
- Correspondence: (A.F.); (W.L.)
| | - Wenzhi Lan
- State Key Laboratory for Pharmaceutical Biotechnology, College of Life Sciences, Nanjing University, Nanjing 210093, China; (N.S.); (G.T.)
- Correspondence: (A.F.); (W.L.)
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43
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Kumar V, Vogelsang L, Schmidt RR, Sharma SS, Seidel T, Dietz KJ. Remodeling of Root Growth Under Combined Arsenic and Hypoxia Stress Is Linked to Nutrient Deprivation. FRONTIERS IN PLANT SCIENCE 2020; 11:569687. [PMID: 33193499 PMCID: PMC7644957 DOI: 10.3389/fpls.2020.569687] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/04/2020] [Accepted: 10/06/2020] [Indexed: 05/29/2023]
Abstract
Root architecture responds to environmental stress. Stress-induced metabolic and nutritional changes affect the endogenous root development program. Transcriptional and translational changes realize the switch between stem cell proliferation and cell differentiation, lateral root or root hair formation and root functionality for stress acclimation. The current work explores the effects of stress combination of arsenic toxicity (As) and hypoxia (Hpx) on root development in Arabidopsis thaliana. As revealed previously, combined As and Hpx treatment leads to severe nutritional disorder evident from deregulation of root transcriptome and plant mineral contents. Both As and Hpx were identified to pose stress-specific constraints on root development that lead to unique root growth phenotype under their combination. Besides inhibition of root apical meristem (RAM) activity under all stresses, As induced lateral root growth while root hair density and lengths were strongly increased by Hpx and HpxAs-treatments. A dual stimulation of phosphate (Pi)-starvation response was observed for HpxAs-treated plant roots; however, the response under HpxAs aligned more with Hpx than As. Transcriptional evidence along with biochemical data suggests involvement of PHOSPHATE STARVATION RESPONSE 1; PHR1-dependent systemic signaling. Pi metabolism-related transcripts in close association with cellular iron homeostasis modulate root development under HpxAs. Early redox potential changes in meristematic cells, differential ROS accumulation in root hair zone cell layers and strong deregulation of NADPH oxidases, NADPH-dependent oxidoreductases and peroxidases signify a role of redox and ROS signaling in root architecture remodeling under HpxAs. Differential aquaporin expression suggests transmembrane ROS transport to regulate root hair induction and growth. Reorganization of energy metabolism through NO-dependent alternate oxidase, lactate fermentation, and phosphofructokinase seems crucial under HpxAs. TOR and SnRK-signaling network components were potentially involved in control of sustainable utilization of available energy reserves for root hair growth under combined stress as well as recovery on reaeration. Findings are discussed in context of combined stress-induced signaling in regulation of root development in contrast to As and Hpx alone.
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Affiliation(s)
- Vijay Kumar
- Department of Biochemistry and Physiology of Plants, Faculty of Biology, University of Bielefeld, Bielefeld, Germany
- Department of Biosciences, Himachal Pradesh University, Shimla, India
| | - Lara Vogelsang
- Department of Biochemistry and Physiology of Plants, Faculty of Biology, University of Bielefeld, Bielefeld, Germany
| | - Romy R. Schmidt
- Department of Plant Biotechnology, Faculty of Biology, University of Bielefeld, Bielefeld, Germany
| | - Shanti S. Sharma
- Department of Botany, School of Life Sciences, Sikkim University, Gangtok, India
| | - Thorsten Seidel
- Department of Biochemistry and Physiology of Plants, Faculty of Biology, University of Bielefeld, Bielefeld, Germany
| | - Karl-Josef Dietz
- Department of Biochemistry and Physiology of Plants, Faculty of Biology, University of Bielefeld, Bielefeld, Germany
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44
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Tian R, Paul P, Joshi S, Perry SE. Genetic activity during early plant embryogenesis. Biochem J 2020; 477:3743-3767. [PMID: 33045058 PMCID: PMC7557148 DOI: 10.1042/bcj20190161] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2020] [Revised: 09/19/2020] [Accepted: 09/21/2020] [Indexed: 12/13/2022]
Abstract
Seeds are essential for human civilization, so understanding the molecular events underpinning seed development and the zygotic embryo it contains is important. In addition, the approach of somatic embryogenesis is a critical propagation and regeneration strategy to increase desirable genotypes, to develop new genetically modified plants to meet agricultural challenges, and at a basic science level, to test gene function. We briefly review some of the transcription factors (TFs) involved in establishing primary and apical meristems during zygotic embryogenesis, as well as TFs necessary and/or sufficient to drive somatic embryo programs. We focus on the model plant Arabidopsis for which many tools are available, and review as well as speculate about comparisons and contrasts between zygotic and somatic embryo processes.
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Affiliation(s)
- Ran Tian
- Department of Plant and Soil Sciences, University of Kentucky, Lexington, KY 40546-0312, U.S.A
| | - Priyanka Paul
- Department of Plant and Soil Sciences, University of Kentucky, Lexington, KY 40546-0312, U.S.A
| | - Sanjay Joshi
- Department of Plant and Soil Sciences, University of Kentucky, Lexington, KY 40546-0312, U.S.A
| | - Sharyn E. Perry
- Department of Plant and Soil Sciences, University of Kentucky, Lexington, KY 40546-0312, U.S.A
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Gilio TAS, Hurtado-Gonzales OP, Gonçalves-Vidigal MC, Valentini G, Ferreira Elias JC, Song Q, Pastor-Corrales MA. Fine mapping of an anthracnose-resistance locus in Andean common bean cultivar Amendoim Cavalo. PLoS One 2020; 15:e0239763. [PMID: 33027258 PMCID: PMC7540868 DOI: 10.1371/journal.pone.0239763] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2020] [Accepted: 09/12/2020] [Indexed: 11/19/2022] Open
Abstract
Anthracnose, caused by the fungal pathogen Colletotrichum lindemuthianum, is one of the world's most destructive diseases of common bean. The use of resistant cultivars is the most cost-effective strategy to manage this disease; however, durable resistance is difficult to achieve due to the vast virulence diversity of the anthracnose pathogen. Finding new genes with broad-spectrum resistance increases the prospect of designing an effective anthracnose-management strategy. Genetic analysis confirmed the presence of a single, dominant anthracnose-resistance locus in AC, which we provisionally named Co-AC. Bulk segregant analysis and genetic mapping of two F2 populations from the crosses AC × PI207262 and AC × G 2333 were used to determine the position of the Co-AC locus in a 631 Kbp genomic region flanked by the SNP markers SS56 and SS92 on the lower arm of chromosome Pv01. By genotyping 77 F3 plants from the AC × PI207262 cross using nine additional markers, we fine-mapped the Co-AC locus to a significantly smaller genomic region (9.4 Kbp) flanked by the SNP markers SS102 and SS165. This 9.4 Kbp region harbors three predicted genes based on the common bean reference genome, notably including the gene model Phvul.001G244300, which encodes Clathrin heavy chain 1, a protein that supports specific stomatal regulation functions and might play a role in plant defense signaling. Because the Co-AC resistance locus is linked in cis, it can be selected with great efficiency using molecular markers. These results will be very useful for breeding programs aimed at developing bean cultivars with anthracnose resistance using marker-assisted selection. This study revealed the broad-spectrum resistance of AC to C. lindemuthianum and the existence of the Co-AC anthracnose-resistance locus. Fine mapping positioned this locus in a small genomic region on the lower end of chromosome Pv01 that contained three candidate genes for the Co-AC locus.
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Affiliation(s)
- Thiago Alexandre Santana Gilio
- Departamento de Agronomia, Universidade Estadual de Maringá, Maringá, Paraná, Brazil
- Programa de pós-graduação em genética e melhoramento de plantas, Universidade do Estado de Mato Grosso, Cáceres, Mato Grosso, Brazil
| | - Oscar P. Hurtado-Gonzales
- Soybean Genomics and Improvement Laboratory, United States Department of Agriculture, Agricultural Research Service, Beltsville, Maryland, United States of America
| | | | - Giseli Valentini
- Departamento de Agronomia, Universidade Estadual de Maringá, Maringá, Paraná, Brazil
| | | | - Qijian Song
- Soybean Genomics and Improvement Laboratory, United States Department of Agriculture, Agricultural Research Service, Beltsville, Maryland, United States of America
| | - Marcial A. Pastor-Corrales
- Soybean Genomics and Improvement Laboratory, United States Department of Agriculture, Agricultural Research Service, Beltsville, Maryland, United States of America
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Li J, Yang Y, Chai M, Ren M, Yuan J, Yang W, Dong Y, Liu B, Jian Q, Wang S, Peng B, Yuan H, Fan H. Gibberellins modulate local auxin biosynthesis and polar auxin transport by negatively affecting flavonoid biosynthesis in the root tips of rice. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2020; 298:110545. [PMID: 32771158 DOI: 10.1016/j.plantsci.2020.110545] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/23/2020] [Revised: 05/28/2020] [Accepted: 05/30/2020] [Indexed: 05/07/2023]
Abstract
As critical signalling molecules, both gibberellin (GA) and auxin play essential roles in regulating root elongation, and many studies have been shown that auxin influences GA biosynthesis and signalling. However, the mechanism by which GA affects auxin in root elongation is still unknown. In this study, root elongation and DR5-GUS activity were analyzed in rice seedlings. Paclobutrazol-induced short root phenotypes could be partially reversed by co-treatment with IAA, and the inhibition of root elongation caused by naphthylphthalamic acid could be partially reversed when plants were co-treated with GA. DR5-GUS activity was increased in the presence of GA and was reduced at the root tip of paclobutrazol-treated seedlings, indicating that GA could regulate local auxin biosynthesis and polar auxin transport (PAT) in rice root tips. Our RNA-seq analysis showed that GA was involved in the regulation of flavonoid biosynthesis. Flavonoid accumulation level in ks1 root tips was significantly increased and negatively correlated with GA content in GA- and PAC-treated seedlings. GA also rescued the decreased DR5-GUS activity induced by quercetin in rice root tips, confirming that flavonoids act as an intermediary in GA-mediated auxin biosynthesis and PAT. Based on RNA-seq and qPCR analyses, we determined that GA regulates local auxin biosynthesis and polar auxin transport by modulating the expression of OsYUCCA6 and PIN. Our findings provide valuable new insights into the interactions between GA and auxin in the root tips of rice.
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Affiliation(s)
- Jintao Li
- College of Life Sciences, Xinyang Normal University, Xinyang, 464000, China.
| | - Yuna Yang
- College of Life Sciences, Xinyang Normal University, Xinyang, 464000, China
| | - Mengmeng Chai
- College of Life Sciences, Xinyang Normal University, Xinyang, 464000, China
| | - Mengdi Ren
- College of Life Sciences, Xinyang Normal University, Xinyang, 464000, China
| | - Jingjia Yuan
- College of Life Sciences, Xinyang Normal University, Xinyang, 464000, China
| | - Wenqian Yang
- College of Life Sciences, Xinyang Normal University, Xinyang, 464000, China
| | - Yu Dong
- College of Life Sciences, Xinyang Normal University, Xinyang, 464000, China
| | - BinWen Liu
- College of Life Sciences, Xinyang Normal University, Xinyang, 464000, China
| | - Qingmei Jian
- College of Bioengineering, Jingchu University of Technology, Jingmen, 448000, China
| | - Shouchuang Wang
- Hainan Key Laboratory for Sustainable Utilization of Tropical Bioresource, College of Tropical Crops, Hainan University, Haikou, 572208, China
| | - Bo Peng
- College of Life Sciences, Xinyang Normal University, Xinyang, 464000, China
| | - Hongyu Yuan
- College of Life Sciences, Xinyang Normal University, Xinyang, 464000, China
| | - Haiyan Fan
- College of Life Sciences, Xinyang Normal University, Xinyang, 464000, China.
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Receptor-like protein kinase-mediated signaling in controlling root meristem homeostasis. ABIOTECH 2020; 1:157-168. [PMID: 36303569 PMCID: PMC9590551 DOI: 10.1007/s42994-020-00024-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2020] [Accepted: 06/09/2020] [Indexed: 02/01/2023]
Abstract
Generation of the root greatly benefits higher plants living on land. Continuous root growth and development are achieved by the root apical meristem, which acts as a reservoir of stem cells. The stem cells, on the one hand, constantly renew themselves through cell division. On the other hand, they differentiate into functional cells to form diverse tissues of the root. The balance between the maintenance and consumption of the root apical meristem is governed by cell-to-cell communications. Receptor-like protein kinases (RLKs), a group of signaling molecules localized on the cell surface, have been implicated in sensing multiple endogenous and environmental signals for plant development and stress adaptation. Over the past two decades, various RLKs and their ligands have been revealed to participate in regulating root meristem homeostasis. In this review, we focus on the recent studies about RLK-mediated signaling in regulating the maintenance and consumption of the root apical meristem.
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48
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Wang J, Su Y, Kong X, Ding Z, Zhang XS. Initiation and maintenance of plant stem cells in root and shoot apical meristems. ABIOTECH 2020; 1:194-204. [PMID: 36303567 PMCID: PMC9590467 DOI: 10.1007/s42994-020-00020-3] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2020] [Accepted: 04/07/2020] [Indexed: 11/27/2022]
Abstract
Plant stem cells are a small group of cells with a self-renewal capacity and serve as a steady supply of precursor cells to form new differentiated tissues and organs in plants. Root stem cells and shoot stem cells, which are located in the root apical meristem and in the shoot apical meristem, respectively, play a critical role in plant longitudinal growth. These stem cells in shoot and root apical meristems remain as pluripotent state throughout the lifespan of the plant and control the growth and development of plants. The molecular mechanisms of initiation and maintenance of plant stem cells have been extensively investigated. In this review, we mainly discuss how the plant phytohormones, such as auxin and cytokinin, coordinate with the key transcription factors to regulate plant stem cell initiation and maintenance in root and shoot apical meristems. In addition, we highlight the common regulatory mechanisms of both root and shoot apical meristems.
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Affiliation(s)
- Junxia Wang
- The Key Laboratory of Plant Development and Environmental Adaptation Biology, Ministry of Education, College of Life Sciences, Shandong University, Qingdao, 266237 Shandong China
| | - Yinghua Su
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Tai’an, 271018 Shandong China
| | - Xiangpei Kong
- The Key Laboratory of Plant Development and Environmental Adaptation Biology, Ministry of Education, College of Life Sciences, Shandong University, Qingdao, 266237 Shandong China
| | - Zhaojun Ding
- The Key Laboratory of Plant Development and Environmental Adaptation Biology, Ministry of Education, College of Life Sciences, Shandong University, Qingdao, 266237 Shandong China
| | - Xian Sheng Zhang
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Tai’an, 271018 Shandong China
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49
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Mining for Candidate Genes Controlling Secondary Growth of the Carrot Storage Root. Int J Mol Sci 2020; 21:ijms21124263. [PMID: 32549408 PMCID: PMC7352697 DOI: 10.3390/ijms21124263] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2020] [Revised: 06/10/2020] [Accepted: 06/12/2020] [Indexed: 12/02/2022] Open
Abstract
Background: Diverse groups of carrot cultivars have been developed to meet consumer demands and industry needs. Varietal groups of the cultivated carrot are defined based on the shape of roots. However, little is known about the genetic basis of root shape determination. Methods: Here, we used 307 carrot plants from 103 open-pollinated cultivars for a genome wide association study to identify genomic regions associated with the storage root morphology. Results: A 180 kb-long region on carrot chromosome 1 explained 10% of the total observed phenotypic variance in the shoulder diameter. Within that region, DcDCAF1 and DcBTAF1 genes were proposed as candidates controlling secondary growth of the carrot storage root. Their expression profiles differed between the cultivated and the wild carrots, likely indicating that their elevated expression was required for the development of edible roots. They also showed higher expression at the secondary root growth stage in cultivars producing thick roots, as compared to those developing thin roots. Conclusions: We provided evidence for a likely involvement of DcDCAF1 and/or DcBTAF1 in the development of the carrot storage root and developed a genotyping assay facilitating the identification of variants in the region on carrot chromosome 1 associated with secondary growth of the carrot root.
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50
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Faizan M, Faraz A, Sami F, Siddiqui H, Yusuf M, Gruszka D, Hayat S. Role of Strigolactones: Signalling and Crosstalk with Other Phytohormones. Open Life Sci 2020; 15:217-228. [PMID: 33987478 PMCID: PMC8114782 DOI: 10.1515/biol-2020-0022] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2019] [Accepted: 01/05/2020] [Indexed: 01/09/2023] Open
Abstract
Plant hormones play important roles in controlling how plants grow and develop. While metabolism provides the energy needed for plant survival, hormones regulate the pace of plant growth. Strigolactones (SLs) were recently defined as new phytohormones that regulate plant metabolism and, in turn, plant growth and development. This group of phytohormones is derived from carotenoids and has been implicated in a wide range of physiological functions including regulation of plant architecture (inhibition of bud outgrowth and shoot branching), photomorphogenesis, seed germination, nodulation, and physiological reactions to abiotic factors. SLs also induce hyphal branching in germinating spores of arbuscular mycorrhizal fungi (AMF), a process that is important for initiating the connection between host plant roots and AMF. This review outlines the physiological roles of SLs and discusses the significance of interactions between SLs and other phytohormones to plant metabolic responses.
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Affiliation(s)
- Mohammad Faizan
- Tree Seed Center, College of Forest Resources and Environment, Nanjing Forestry University, Nanjing-210037, P.R. China
- Plant Physiology Section, Department of Botany, Aligarh Muslim University, Aligarh202 002, India
- E-mail:
| | - Ahmad Faraz
- Plant Physiology Section, Department of Botany, Aligarh Muslim University, Aligarh202 002, India
| | - Fareen Sami
- Plant Physiology Section, Department of Botany, Aligarh Muslim University, Aligarh202 002, India
| | - Husna Siddiqui
- Plant Physiology Section, Department of Botany, Aligarh Muslim University, Aligarh202 002, India
| | - Mohammad Yusuf
- Department of Biology, United Arab Emirates University, Al-Ain, UAE
| | - Damian Gruszka
- Department of Genetics, Faculty of Biology and Environmental Protection, University of Silesia, Katowice, Poland
| | - Shamsul Hayat
- Plant Physiology Section, Department of Botany, Aligarh Muslim University, Aligarh202 002, India
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