1
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Karniel U, Koch A, Bar Nun N, Zamir D, Hirschberg J. Tomato Mutants Reveal Root and Shoot Strigolactone Involvement in Branching and Broomrape Resistance. PLANTS (BASEL, SWITZERLAND) 2024; 13:1554. [PMID: 38891362 PMCID: PMC11174905 DOI: 10.3390/plants13111554] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/25/2024] [Revised: 05/29/2024] [Accepted: 06/03/2024] [Indexed: 06/21/2024]
Abstract
The phytohormones strigolactones (SLs) control root and shoot branching and are exuded from roots into the rhizosphere to stimulate interaction with mycorrhizal fungi. The exuded SLs serve as signaling molecules for the germination of parasitic plants. The broomrape Phelipanche aegyptiaca is a widespread noxious weed in various crop plants, including tomato (Solanum lycopersicum). We have isolated three mutants that impair SL functioning in the tomato variety M82: SHOOT BRANCHING 1 (sb1) and SHOOT BRANCHING 2 (sb2), which abolish SL biosynthesis, and SHOOT BRANCHING 3 (sb3), which impairs SL perception. The over-branching phenotype of the sb mutants resulted in a severe yield loss. The isogenic property of the mutations in a determinate growth variety enabled the quantitative evaluation of the contribution of SL to yield under field conditions. As expected, the mutants sb1 and sb2 were completely resistant to infection by P. aegyptiaca due to the lack of SL in the roots. In contrast, sb3 was more susceptible to P. aegyptiaca than the wild-type M82. The SL concentration in roots of the sb3 was two-fold higher than in the wild type due to the upregulation of the transcription of SL biosynthesis genes. This phenomenon suggests that the steady-state level of root SLs is regulated by a feedback mechanism that involves the SL signaling pathway. Surprisingly, grafting wild-type varieties on sb1 and sb2 rootstocks eliminated the branching phenotype and yield loss, indicating that SL synthesized in the shoots is sufficient to control shoot branching. Moreover, commercial tomato varieties grafted on sb1 were protected from P. aegyptiaca infection without significant yield loss, offering a practical solution to the broomrape crisis.
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Affiliation(s)
- Uri Karniel
- Department of Genetics, Alexander Silberman Institute of Life Sciences, The Hebrew University of Jerusalem, Jerusalem 9190401, Israel; (U.K.)
| | - Amit Koch
- Robert H. Smith Institute of Plant Sciences and Genetics, The Hebrew University of Jerusalem, Rehovot 7610001, Israel; (A.K.); (D.Z.)
| | - Nurit Bar Nun
- Department of Genetics, Alexander Silberman Institute of Life Sciences, The Hebrew University of Jerusalem, Jerusalem 9190401, Israel; (U.K.)
| | - Dani Zamir
- Robert H. Smith Institute of Plant Sciences and Genetics, The Hebrew University of Jerusalem, Rehovot 7610001, Israel; (A.K.); (D.Z.)
| | - Joseph Hirschberg
- Department of Genetics, Alexander Silberman Institute of Life Sciences, The Hebrew University of Jerusalem, Jerusalem 9190401, Israel; (U.K.)
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2
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Wang L, Liu L, Huang A, Zhang H, Zheng Y. The metabolism of amino acids, AsA and abscisic acid induced by strigolactone participates in chilling tolerance in postharvest zucchini fruit. FRONTIERS IN PLANT SCIENCE 2024; 15:1402521. [PMID: 38807778 PMCID: PMC11130489 DOI: 10.3389/fpls.2024.1402521] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/17/2024] [Accepted: 04/26/2024] [Indexed: 05/30/2024]
Abstract
Zucchini fruit are notably susceptible to chilling injury when stored at low temperatures. The purpose of this experimental investigation was to assess the influence of strigolactone (ST) (5 μmol L-1) on mitigating chilling injury and the metabolic changes in amino acids, ascorbic acid, and abscisic acid in zucchini fruit stored at 4°C. Research findings demonstrated that ST-treated zucchini fruit displayed a significantly higher tolerance to chilling stress compared to the control group. Postharvest ST treatment led to a decrease in weight loss, accompanied by reduced levels of malondialdehyde and relative ion leakage compared to the untreated group. ST immersion significantly boosted the metabolic pathways associated with proline and arginine, affecting both the enzymatic reactions and gene expressions, thus cumulatively increasing the internal concentrations of these amino acids in zucchini fruit. Zucchini treated with ST exhibited an increased concentration of γ-aminobutyric acid (GABA) as a result of augmented activities and elevated transcriptional levels of glutamate decarboxylase (GAD), GABA transaminase (GAT), and succinate semialdehyde dehydrogenase (SSD). In the ST-treated sample, the elevated enzymatic activities and enhanced gene expressions within the ascorbic acid (AsA) biosynthesis pathway worked together to sustain AsA accumulation. The application of ST resulted in a rise in abscisic acid (ABA) concentration, which correspondingly correlated with the induction of both activities and gene expression levels of crucial enzymes involved in ABA metabolism. Our findings revealed that submerging zucchini fruit in ST could be a highly effective strategy for boosting their chilling tolerance. The alleviation in chilling injury induced by ST may be attributed to the modulation of proline, arginine, GABA, AsA and ABA metabolism.
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Affiliation(s)
- Lei Wang
- College of Agriculture and Agricultural Engineering, Liaocheng University, Liaocheng, China
| | - Li Liu
- College of Agriculture and Agricultural Engineering, Liaocheng University, Liaocheng, China
| | - Anqi Huang
- College of Agriculture and Agricultural Engineering, Liaocheng University, Liaocheng, China
| | - Hua Zhang
- College of Agriculture and Agricultural Engineering, Liaocheng University, Liaocheng, China
| | - Yonghua Zheng
- College of Food Science and Technology, Nanjing Agricultural University, Nanjing, China
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3
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Tang Z, Huang X, Huang K. Strigolactones affect the yield of Tartary buckwheat by regulating endogenous hormone levels. BMC PLANT BIOLOGY 2024; 24:320. [PMID: 38654155 DOI: 10.1186/s12870-024-05029-0] [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: 03/20/2024] [Accepted: 04/16/2024] [Indexed: 04/25/2024]
Abstract
BACKGROUND As a newly class of endogenous phytohormones, strigolactones (SLs) regulate crop growth and yield formation by interacting with other hormones. However, the physiological mechanism of SLs affect the yield by regulating the balance of endogenous hormones of Tartary buckwheat is still unclear. RESULTS In this study, a 2-year field experiment was conducted on Tartary buckwheat (Jinqiao 2) to study the effects of different concentrations (0, 10, and 20 µmol/L) of artificial synthetic analogs of SLs (rac-GR24) and inhibitor of SL synthesis (Tis-108) on the growth, endogenous-hormone content, and yield of Tartary buckwheat. The main-stem branch number, grain number per plant, grain weight per plant, and yield of Tartary buckwheat continuously decreased with increased rac-GR24 concentration, whereas the main-stem diameter and plant height initially increased and then decreased. Rac-GR24 treatment significantly increased the content of SLs and abscisic acid (ABA) in grains, and it decreased the content of Zeatin (Z) + Zeatin nucleoside (ZR). Conversely, Tis-108 treatment decreased the content of SLs and ABA but increased the content of Z + ZR. Results of correlation analysis showed that the content of ABA and SLs, the ratio of SLs/(Z + ZR), SLs/ABA, and ABA/(Z + ZR) were significantly negatively correlated with the yield of Tartary buckwheat, and that Z + ZR content was significantly positively correlated with the yield. Regression analysis further showed that ABA/ (Z + ZR) can explain 58.4% of the variation in yield. CONCLUSIONS In summary, by adjusting the level of endogenous SLs in Tartary buckwheat, the balance of endogenous hormones in grains can be changed, thereby exerting the effect on yield. The results can provide a new agronomic method for the high-yield cultivation of Tartary buckwheat.
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Affiliation(s)
- Zhuolei Tang
- School of Life Science, Guizhou Normal University, Guiyang, 550001, China
| | - Xiaoyan Huang
- School of Life Science, Guizhou Normal University, Guiyang, 550001, China
| | - Kaifeng Huang
- School of Life Science, Guizhou Normal University, Guiyang, 550001, China.
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Younis U, Danish S, Datta R, Alahmadi TA, Ansari MJ. Sustainable remediation of chromium-contaminated soils: boosting radish growth with deashed biochar and strigolactone. BMC PLANT BIOLOGY 2024; 24:115. [PMID: 38365582 PMCID: PMC10870680 DOI: 10.1186/s12870-024-04791-5] [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: 12/25/2023] [Accepted: 02/01/2024] [Indexed: 02/18/2024]
Abstract
Chromium (Cr) stress significantly hinders crop production by disrupting nutrient uptake, impairing plant growth, and contaminating soil, posing a substantial threat to agricultural sustainability. The use of deashed biochar (DAB) and strigolactone can be an effective solution to mitigate this issue. Deashed biochar enhances crop production by improving soil structure, water retention, and nutrient availability while mitigating the bioavailability of toxic substances. Strigolactone boosts plant growth by stimulating root growth, branching, shoot formation, and overall plant physiology. Nevertheless, the scientific rationale behind their collective use as an amendment to counter Cr stress remains to be substantiated. Therefore, in this study, a blend of DAB and strigolactone was employed as additives in radish cultivation, both in the absence of Cr stress and under the influence of 200Cr stress. Four treatments, i.e., 0, 20µM Strigolactone, DAB, and 20µM Strigolactone + DAB, were applied in four replications following a completely randomized design. Results demonstrate that 20µM Strigolactone + DAB produced significant improvement in radish shoot length (27.29%), root length (45.60%), plant fresh weight (33.25%), and plant dry weight (78.91%), compared to the control under Cr stress. Significant enrichment in radish chlorophyll a (20.41%), chlorophyll b (58.53%), and total chlorophyll (31.54%) over the control under Cr stress, prove the efficacy of 20µM Strigolactone + DAB treatment. In conclusion, 20µM Strigolactone + DAB is the recommended amendment for mitigating Cr stress in radish. Farmers should consider using Strigolactone + DAB amendments to combat Cr stress and enhance radish growth, contributing to a more resilient agricultural ecosystem.
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Affiliation(s)
- Uzma Younis
- Botany Department, The Islamia University of Bahawalpur, Sub Campus Rahim Yar Khan, Rahim Yar Khan, Punjab, Pakistan
| | - Subhan Danish
- Department of Soil Science, Faculty of Agricultural Sciences and Technology, Bahauddin Zakariya University, Multan, Punjab, Pakistan.
| | - Rahul Datta
- Department of Geology and Pedology, Faculty of Forestry and Wood Technology, Mendel University in Brno, Zemedelska 1, Brno, 61300, Czech Republic.
| | - Tahani Awad Alahmadi
- Department of Pediatrics, College of Medicine and King Khalid University Hospital, King Saud University, Medical City, PO Box-2925, 11461, Riyadh, Saudi Arabia
| | - Mohammad Javed Ansari
- Department of Botany, Hindu College Moradabad (Mahatma Jyotiba Phule Rohilkhand University Bareilly), Moradabad, India
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5
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Kean-Galeno T, Lopez-Arredondo D, Herrera-Estrella L. The Shoot Apical Meristem: An Evolutionary Molding of Higher Plants. Int J Mol Sci 2024; 25:1519. [PMID: 38338798 PMCID: PMC10855264 DOI: 10.3390/ijms25031519] [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: 09/20/2023] [Revised: 11/27/2023] [Accepted: 01/23/2024] [Indexed: 02/12/2024] Open
Abstract
The shoot apical meristem (SAM) gives rise to the aerial structure of plants by producing lateral organs and other meristems. The SAM is responsible for plant developmental patterns, thus determining plant morphology and, consequently, many agronomic traits such as the number and size of fruits and flowers and kernel yield. Our current understanding of SAM morphology and regulation is based on studies conducted mainly on some angiosperms, including economically important crops such as maize (Zea mays) and rice (Oryza sativa), and the model species Arabidopsis (Arabidopsis thaliana). However, studies in other plant species from the gymnosperms are scant, making difficult comparative analyses that help us understand SAM regulation in diverse plant species. This limitation prevents deciphering the mechanisms by which evolution gave rise to the multiple plant structures within the plant kingdom and determines the conserved mechanisms involved in SAM maintenance and operation. This review aims to integrate and analyze the current knowledge of SAM evolution by combining the morphological and molecular information recently reported from the plant kingdom.
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Affiliation(s)
- Tania Kean-Galeno
- Institute of Genomics for Crop Abiotic Stress Tolerance, Plant and Soil Science Department, Texas Tech University, Lubbock, TX 79409, USA; (T.K.-G.); (D.L.-A.)
| | - Damar Lopez-Arredondo
- Institute of Genomics for Crop Abiotic Stress Tolerance, Plant and Soil Science Department, Texas Tech University, Lubbock, TX 79409, USA; (T.K.-G.); (D.L.-A.)
| | - Luis Herrera-Estrella
- Institute of Genomics for Crop Abiotic Stress Tolerance, Plant and Soil Science Department, Texas Tech University, Lubbock, TX 79409, USA; (T.K.-G.); (D.L.-A.)
- Unidad de Genómica Avanzada/Langebio, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, Irapuato 36821, Mexico
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6
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Ochatt SJ. Less Frequently Used Growth Regulators in Plant Tissue Culture. Methods Mol Biol 2024; 2827:109-143. [PMID: 38985266 DOI: 10.1007/978-1-0716-3954-2_8] [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: 07/11/2024]
Abstract
Plant growth regulators are routinely added to in vitro culture media to foster the growth and differentiation of the cells, tissues, and organs. However, while the literature on usage of the more common auxins, cytokinins, gibberellins, abscisic acid, and ethylene is vast, other compounds that also have shown a growth-regulating activity have not been studied as frequently. Such substances are also capable of modulating the responses of plant cells and tissues in vitro by regulating their growth, differentiation, and regeneration competence, but also by enhancing their responses toward biotic and abiotic stress agents and improving the production of secondary metabolites of interest. This chapter will discuss the in vitro effects of several of such less frequently added plant growth regulators, including brassinosteroids (BRS), strigolactones (SLs), phytosulfokines (PSKs), methyl jasmonate, salicylic acid (SA), sodium nitroprusside (SNP), hydrogen sulfite, various plant growth retardants and inhibitors (e.g., ancymidol, uniconazole, flurprimidol, paclobutrazol), and polyamines.
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Affiliation(s)
- Sergio J Ochatt
- Agroécologie, InstitutAgro Dijon, INRAE, Université de Bourgogne, Université de Bourgogne Franche-Comté, Dijon, France.
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7
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Luqman M, Shahbaz M, Maqsood MF, Farhat F, Zulfiqar U, Siddiqui MH, Masood A, Aqeel M, Haider FU. Effect of strigolactone on growth, photosynthetic efficiency, antioxidant activity, and osmolytes accumulation in different maize ( Zea mays L.) hybrids grown under drought stress. PLANT SIGNALING & BEHAVIOR 2023; 18:2262795. [PMID: 37767863 PMCID: PMC10730227 DOI: 10.1080/15592324.2023.2262795] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/24/2023] [Accepted: 09/17/2023] [Indexed: 09/29/2023]
Abstract
Drought alters plant physiology, morphology, and biochemical pathways, necessitating effective mitigation strategies. Strigolactones (SLs) are phytohormones known to enhance plant growth under abiotic stress. However, their specific impact on drought stress in maize remains unclear. This study aimed to determine the optimal SL concentration for mitigating drought stress in two maize hybrids (HY-1898, FH-1046). Maize plants were subjected to 60% field capacity drought stress in a pot experiment. After 40 d, different concentrations (0, 0.001, 0.01, and 0.1 mg L-1) of the synthetic SL analogue GR24 were applied to evaluate their effects on growth features, photosynthesis attributes, and osmolyte accumulation in the maize hybrids. Results showed that exogenous SL application significantly increased photosynthetic pigments in maize hybrids under drought stress. Chlorophyll content, gas exchange characteristics, net CO2 assimilation rate, stomatal conductance, water use efficiency, and antioxidant activities were enhanced by GR24. Leaf ascorbic acid and total phenolics also increased with SL application. Organic osmolytes, such as glycine betaine and free proline, were elevated in both maize hybrids under drought stress. Yield-related parameters, including cob diameter, cob weight, number of seeds per cob, and number of seeds per plant, were significantly increased by GR24 under drought stress. Our findings highlight the potential of GR24 foliar application to mitigate drought stress and promote maize growth and grain yield in a concentration-dependent manner. The minimum effective SL concentration against drought stress was determined to be 0.01 mg L-1. Overall, foliar application of GR24 could serve as a sustainable approach for drought tolerance in agriculture.
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Affiliation(s)
- Muhammad Luqman
- Department of Botany, University of Agriculture, Faisalabad, Pakistan
| | - Muhammad Shahbaz
- Department of Botany, University of Agriculture, Faisalabad, Pakistan
| | | | - Fozia Farhat
- Department of Botany, Government College Women University, Faisalabad, Pakistan
| | - Usman Zulfiqar
- Department of Agronomy, Faculty of Agriculture and Environment, The Islamia University of Bahawalpur, Bahawalpur, Pakistan
| | - Manzer H. Siddiqui
- Department of Botany and Microbiology, College of Science, King Saud University, Riyadh, Saudi Arabia
| | - Atifa Masood
- The department of Botany, University of Lahore, Sargodha, Pakistan
| | - Muhammad Aqeel
- State key Laboratory of Grassland Agro-Ecosystems, School of Life Sciences, Lanzhou University, Lanzhou, China
| | - Fasih Ullah Haider
- Ecology, Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystems, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, China
- Ecology, University of Chinese Academy of Sciences, Beijing, China
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8
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Mongès A, Yaakoub H, Bidon B, Glévarec G, Héricourt F, Carpin S, Chauderon L, Drašarová L, Spíchal L, Binder BM, Papon N, Rochange S. Are Histidine Kinases of Arbuscular Mycorrhizal Fungi Involved in the Response to Ethylene and Cytokinins? MOLECULAR PLANT-MICROBE INTERACTIONS : MPMI 2023; 36:656-665. [PMID: 37851914 DOI: 10.1094/mpmi-05-23-0056-r] [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: 10/20/2023]
Abstract
Signals are exchanged at all stages of the arbuscular mycorrhizal (AM) symbiosis between fungi and their host plants. Root-exuded strigolactones are well-known early symbiotic cues, but the role of other phytohormones as interkingdom signals has seldom been investigated. Here we focus on ethylene and cytokinins, for which candidate receptors have been identified in the genome of the AM fungus Rhizophagus irregularis. Ethylene is known from the literature to affect asymbiotic development of AM fungi, and in the present study, we found that three cytokinin forms could stimulate spore germination in R. irregularis. Heterologous complementation of a Saccharomyces cerevisiae mutant strain with the candidate ethylene receptor RiHHK6 suggested that this protein can sense and transduce an ethylene signal. Accordingly, its N-terminal domain expressed in Pichia pastoris displayed saturable binding to radiolabeled ethylene. Thus, RiHHK6 displays the expected characteristics of an ethylene receptor. In contrast, the candidate cytokinin receptor RiHHK7 did not complement the S. cerevisiae mutant strain or Medicago truncatula cytokinin receptor mutants and seemed unable to bind cytokinins, suggesting that another receptor is involved in the perception of these phytohormones. Taken together, our results support the hypothesis that AM fungi respond to a range of phytohormones and that these compounds bear multiple functions in the rhizosphere beyond their known roles as internal plant developmental regulators. Our analysis of two phytohormone receptor candidates also sheds new light on the possible perception mechanisms in AM fungi. [Formula: see text] Copyright © 2023 The Author(s). This is an open access article distributed under the CC BY-NC-ND 4.0 International license.
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Affiliation(s)
- Ayla Mongès
- Laboratoire de Recherche en Sciences Végétales, Université de Toulouse, Centre National de la Recherche Scientifique, Université Paul Sabatier, INP Toulouse, 31326 Castanet-Tolosan, France
| | - Hajar Yaakoub
- UNIV Angers, IRF, SFR 4208 ICAT, F-49000 Angers, France
| | | | - Gaëlle Glévarec
- EA2106 Biomolécules et Biotechnologies Végétales, Université de Tours, Tours, France
| | - François Héricourt
- Laboratoire de Biologie des Ligneux et des Grandes Cultures (LBLGC), Université d'Orléans, INRAE USC1328, 45067 Orléans Cedex 2, France
| | - Sabine Carpin
- Laboratoire de Biologie des Ligneux et des Grandes Cultures (LBLGC), Université d'Orléans, INRAE USC1328, 45067 Orléans Cedex 2, France
| | - Lucie Chauderon
- Laboratoire de Recherche en Sciences Végétales, Université de Toulouse, Centre National de la Recherche Scientifique, Université Paul Sabatier, INP Toulouse, 31326 Castanet-Tolosan, France
| | - Lenka Drašarová
- Isotope Laboratory, Institute of Experimental Botany, The Czech Academy of Sciences, Vídeňská, 1083, Prague, Czech Republic
| | - Lukáš Spíchal
- Czech Advanced Technology and Research Institute, Šlechtitelů 27, Olomouc CZ-783 71, Palacký University, Olomouc, Czech Republic
| | - Brad M Binder
- Department of Biochemistry and Cellular & Molecular Biology, University of Tennessee, Knoxville, TN, U.S.A
| | - Nicolas Papon
- UNIV Angers, IRF, SFR 4208 ICAT, F-49000 Angers, France
| | - Soizic Rochange
- Laboratoire de Recherche en Sciences Végétales, Université de Toulouse, Centre National de la Recherche Scientifique, Université Paul Sabatier, INP Toulouse, 31326 Castanet-Tolosan, France
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9
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Bajguz A, Piotrowska-Niczyporuk A. Biosynthetic Pathways of Hormones in Plants. Metabolites 2023; 13:884. [PMID: 37623827 PMCID: PMC10456939 DOI: 10.3390/metabo13080884] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2023] [Revised: 07/22/2023] [Accepted: 07/24/2023] [Indexed: 08/26/2023] Open
Abstract
Phytohormones exhibit a wide range of chemical structures, though they primarily originate from three key metabolic precursors: amino acids, isoprenoids, and lipids. Specific amino acids, such as tryptophan, methionine, phenylalanine, and arginine, contribute to the production of various phytohormones, including auxins, melatonin, ethylene, salicylic acid, and polyamines. Isoprenoids are the foundation of five phytohormone categories: cytokinins, brassinosteroids, gibberellins, abscisic acid, and strigolactones. Furthermore, lipids, i.e., α-linolenic acid, function as a precursor for jasmonic acid. The biosynthesis routes of these different plant hormones are intricately complex. Understanding of these processes can greatly enhance our knowledge of how these hormones regulate plant growth, development, and physiology. This review focuses on detailing the biosynthetic pathways of phytohormones.
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Affiliation(s)
- Andrzej Bajguz
- Department of Biology and Plant Ecology, Faculty of Biology, University of Bialystok, Ciolkowskiego 1J, 15-245 Bialystok, Poland;
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10
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Yi F, Song A, Cheng K, Liu J, Wang C, Shao L, Wu S, Wang P, Zhu J, Liang Z, Chang Y, Chu Z, Cai C, Zhang X, Wang P, Chen A, Xu J, Burritt DJ, Herrera-Estrella L, Tran LSP, Li W, Cai Y. Strigolactones positively regulate Verticillium wilt resistance in cotton via crosstalk with other hormones. PLANT PHYSIOLOGY 2023; 192:945-966. [PMID: 36718522 PMCID: PMC10231467 DOI: 10.1093/plphys/kiad053] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/25/2022] [Revised: 01/04/2023] [Accepted: 01/04/2023] [Indexed: 06/01/2023]
Abstract
Verticillium wilt caused by Verticillium dahliae is a serious vascular disease in cotton (Gossypium spp.). V. dahliae induces the expression of the CAROTENOID CLEAVAGE DIOXYGENASE 7 (GauCCD7) gene involved in strigolactone (SL) biosynthesis in Gossypium australe, suggesting a role for SLs in Verticillium wilt resistance. We found that the SL analog rac-GR24 enhanced while the SL biosynthesis inhibitor TIS108 decreased cotton resistance to Verticillium wilt. Knock-down of GbCCD7 and GbCCD8b genes in island cotton (Gossypium barbadense) decreased resistance, whereas overexpression of GbCCD8b in upland cotton (Gossypium hirsutum) increased resistance to Verticillium wilt. Additionally, Arabidopsis (Arabidopsis thaliana) SL mutants defective in CCD7 and CCD8 putative orthologs were susceptible, whereas both Arabidopsis GbCCD7- and GbCCD8b-overexpressing plants were more resistant to Verticillium wilt than wild-type (WT) plants. Transcriptome analyses showed that several genes related to the jasmonic acid (JA)- and abscisic acid (ABA)-signaling pathways, such as MYELOCYTOMATOSIS 2 (GbMYC2) and ABA-INSENSITIVE 5, respectively, were upregulated in the roots of WT cotton plants in responses to rac-GR24 and V. dahliae infection but downregulated in the roots of both GbCCD7- and GbCCD8b-silenced cotton plants. Furthermore, GbMYC2 suppressed the expression of GbCCD7 and GbCCD8b by binding to their promoters, which might regulate the homeostasis of SLs in cotton through a negative feedback loop. We also found that GbCCD7- and GbCCD8b-silenced cotton plants were impaired in V. dahliae-induced reactive oxygen species (ROS) accumulation. Taken together, our results suggest that SLs positively regulate cotton resistance to Verticillium wilt through crosstalk with the JA- and ABA-signaling pathways and by inducing ROS accumulation.
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Affiliation(s)
- Feifei Yi
- State Key Laboratory of Cotton Biology, Academy for Advanced Interdisciplinary Studies, School of Life Sciences, School of Mathematics and Statistics, School of Computer and Information Engineering, Henan University, Kaifeng 475004, China
| | - Aosong Song
- State Key Laboratory of Cotton Biology, Academy for Advanced Interdisciplinary Studies, School of Life Sciences, School of Mathematics and Statistics, School of Computer and Information Engineering, Henan University, Kaifeng 475004, China
| | - Kai Cheng
- State Key Laboratory of Cotton Biology, Academy for Advanced Interdisciplinary Studies, School of Life Sciences, School of Mathematics and Statistics, School of Computer and Information Engineering, Henan University, Kaifeng 475004, China
| | - Jinlei Liu
- State Key Laboratory of Cotton Biology, Academy for Advanced Interdisciplinary Studies, School of Life Sciences, School of Mathematics and Statistics, School of Computer and Information Engineering, Henan University, Kaifeng 475004, China
| | - Chenxiao Wang
- State Key Laboratory of Cotton Biology, Academy for Advanced Interdisciplinary Studies, School of Life Sciences, School of Mathematics and Statistics, School of Computer and Information Engineering, Henan University, Kaifeng 475004, China
| | - Lili Shao
- State Key Laboratory of Cotton Biology, Academy for Advanced Interdisciplinary Studies, School of Life Sciences, School of Mathematics and Statistics, School of Computer and Information Engineering, Henan University, Kaifeng 475004, China
| | - Shuang Wu
- State Key Laboratory of Cotton Biology, Academy for Advanced Interdisciplinary Studies, School of Life Sciences, School of Mathematics and Statistics, School of Computer and Information Engineering, Henan University, Kaifeng 475004, China
| | - Ping Wang
- State Key Laboratory of Cotton Biology, Academy for Advanced Interdisciplinary Studies, School of Life Sciences, School of Mathematics and Statistics, School of Computer and Information Engineering, Henan University, Kaifeng 475004, China
| | - Jiaxuan Zhu
- State Key Laboratory of Cotton Biology, Academy for Advanced Interdisciplinary Studies, School of Life Sciences, School of Mathematics and Statistics, School of Computer and Information Engineering, Henan University, Kaifeng 475004, China
| | - Zhilin Liang
- State Key Laboratory of Cotton Biology, Academy for Advanced Interdisciplinary Studies, School of Life Sciences, School of Mathematics and Statistics, School of Computer and Information Engineering, Henan University, Kaifeng 475004, China
| | - Ying Chang
- State Key Laboratory of Cotton Biology, Academy for Advanced Interdisciplinary Studies, School of Life Sciences, School of Mathematics and Statistics, School of Computer and Information Engineering, Henan University, Kaifeng 475004, China
| | - Zongyan Chu
- Cotton Institution, Kaifeng Academy of Agriculture and Forestry, Kaifeng 475000, China
| | - Chaowei Cai
- State Key Laboratory of Cotton Biology, Academy for Advanced Interdisciplinary Studies, School of Life Sciences, School of Mathematics and Statistics, School of Computer and Information Engineering, Henan University, Kaifeng 475004, China
| | - Xuebin Zhang
- State Key Laboratory of Cotton Biology, Academy for Advanced Interdisciplinary Studies, School of Life Sciences, School of Mathematics and Statistics, School of Computer and Information Engineering, Henan University, Kaifeng 475004, China
| | - Pei Wang
- State Key Laboratory of Cotton Biology, Academy for Advanced Interdisciplinary Studies, School of Life Sciences, School of Mathematics and Statistics, School of Computer and Information Engineering, Henan University, Kaifeng 475004, China
| | - Aimin Chen
- State Key Laboratory of Cotton Biology, Academy for Advanced Interdisciplinary Studies, School of Life Sciences, School of Mathematics and Statistics, School of Computer and Information Engineering, Henan University, Kaifeng 475004, China
| | - Jin Xu
- College of Horticulture, Shanxi Agricultural University, Taigu 030801, China
| | - David J Burritt
- Department of Botany, University of Otago, Dunedin 9054, New Zealand
| | - Luis Herrera-Estrella
- Department of Plant and Soil Science, Institute of Genomics for Crop Abiotic Stress Tolerance, Texas Tech University, Lubbock, TX 79409, USA
- Unidad de Genomica Avanzada, Centro de Investigaciony de Estudios Avanzados del Intituto Politecnico Nacional, Irapuato 36821, Mexico
| | - Lam-Son Phan Tran
- Department of Plant and Soil Science, Institute of Genomics for Crop Abiotic Stress Tolerance, Texas Tech University, Lubbock, TX 79409, USA
- Institute of Research and Development, Duy Tan University, Da Nang 550000, Vietnam
| | - Weiqiang Li
- State Key Laboratory of Cotton Biology, Academy for Advanced Interdisciplinary Studies, School of Life Sciences, School of Mathematics and Statistics, School of Computer and Information Engineering, Henan University, Kaifeng 475004, China
- Key Laboratory of Mollisols Agroecology, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Jilin Da’an Agro-ecosystem National Observation Research Station, Changchun 130102, China
| | - Yingfan Cai
- State Key Laboratory of Cotton Biology, Academy for Advanced Interdisciplinary Studies, School of Life Sciences, School of Mathematics and Statistics, School of Computer and Information Engineering, Henan University, Kaifeng 475004, China
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11
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Li Z, Pi Y, Zhai C, Xu D, Ma W, Chen H, Li Y, Wu H. The strigolactone receptor SlDWARF14 plays a role in photosynthetic pigment accumulation and photosynthesis in tomato. PLANT CELL REPORTS 2022; 41:2089-2105. [PMID: 35907035 DOI: 10.1007/s00299-022-02908-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/06/2022] [Accepted: 07/12/2022] [Indexed: 06/15/2023]
Abstract
Tomato DWARF14 regulates the development of roots, shoot branches and leaves, and also plays a role in photosynthetic pigment accumulation and photosynthetic capacity. Strigolactones (SLs) are a novel class of plant hormones. DWARF14 (D14) is the only SL receptor identified to date, but it is not functionally analyzed in tomato (Solanum lycopersicum). In the present study, we identified the potential SL receptor in tomato by bioinformatic analysis, which was designated as SlD14. SlD14 was expressed in roots, stems, flowers and developing fruits, with the highest expression level in leaves. sld14 mutant plants produced by the CRISPR/Cas9 system displayed reduced plant height and root biomass, increased shoot branching and altered leaf shape comparing with WT plants. The cytokinin biosynthetic gene ISOPENTENYLTRANSFERASE 3 (SlIPT3), auxin biosynthetic genes FLOOZY (SlFZY) and TRYPTOPHAN AMINOTRANSFERASE RELATED 1 (SlTAR1) and several auxin transport genes SlPINs, which are involved in branch formation, showed higher expression levels in the sld14 plant stem. In addition, sld14 plants exhibited light-green leaves, reduced chlorophyll and carotenoid contents, abnormal chloroplast structure and reduced photosynthetic capacity. Transcriptomic analysis showed that the transcript levels of six chlorophyll biosynthetic genes, three carotenoid biosynthetic genes and numerous chlorophyll a/b-binding protein genes were decreased in sld14 plants. These results suggest that tomato SL receptor gene SlD14 not only regulates the development of roots, shoot branches and leaves, but also plays a role in regulating photosynthetic pigment accumulation and photosynthetic capacity.
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Affiliation(s)
- Zhifei Li
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, College of Horticulture, Nanjing Agricultural University, Nanjing, 210095, China
| | - Ying Pi
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, College of Horticulture, Nanjing Agricultural University, Nanjing, 210095, China
| | - Changsheng Zhai
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, College of Horticulture, Nanjing Agricultural University, Nanjing, 210095, China
| | - Dong Xu
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, College of Horticulture, Nanjing Agricultural University, Nanjing, 210095, China
| | - Wenyao Ma
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, College of Horticulture, Nanjing Agricultural University, Nanjing, 210095, China
| | - Hong Chen
- Institute of Botany, Jiangsu Province and Chinese Academy of Sciences, Nanjing, 210014, China
| | - Yi Li
- Department of Plant Science and Landscape Architecture, University of Connecticut, Storrs, CT, 06269, USA
| | - Han Wu
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, College of Horticulture, Nanjing Agricultural University, Nanjing, 210095, China.
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12
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Chen C, Xu L, Zhang X, Wang H, Nisa ZU, Jin X, Yu L, Jing L, Chen C. Exogenous strigolactones enhance tolerance in soybean seedlings in response to alkaline stress. PHYSIOLOGIA PLANTARUM 2022; 174:e13784. [PMID: 36151903 DOI: 10.1111/ppl.13784] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/16/2022] [Accepted: 09/05/2022] [Indexed: 06/16/2023]
Abstract
The plant hormone strigolactones (SLs) play crucial roles in regulating plant development and adaptations to abiotic stresses. Even though the functional roles of SLs have been identified in response to abiotic stresses, the function, and mechanism of SLs are not fully established under alkaline stress. In this study, we identified that exogenous SL could improve alkaline tolerance of soybean seedlings, especially when treated with 0.5 μM SL. The application of SL remarkably reduced the malondialdehyde content, hydrogen peroxide content, and increased the activity of antioxidant enzymes under alkaline stress, suggesting that SL improved the alkaline tolerance by regulating the antioxidant defense capacity. The RNA sequencing data showed 530 special differentially expressed genes under SL treatment and alkaline stress, mainly were associated with antioxidant processes and phenylpropanoid biosynthetic pathway. Some transcription factors were also induced by SL under alkaline stress as confirmed by quantitative real-time PCR (qRT-PCR). Furthermore, SL largely increased the Na content in leaves and decreased Na content in roots under alkaline stress, which suggested that SL might promote the transport of Na from the roots to the leaves of the soybean seedlings. Meanwhile, exogenous SL decreased the content of other elements such as K, Mg, Fe, and Cu in leaves or roots under alkaline stress. Collectively, our results suggested a role of SL in regulating antioxidant defense capacity, specific gene expression, and alterations in ionic contents to alleviate harmful effects of alkaline stress in soybean seedlings.
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Affiliation(s)
- Chen Chen
- Department of Chemistry and Molecular Biology, School of Life Science and Technology, Harbin Normal University, Harbin, People's Republic of China
| | - LianKun Xu
- Department of Chemistry and Molecular Biology, School of Life Science and Technology, Harbin Normal University, Harbin, People's Republic of China
| | - Xu Zhang
- Department of Chemistry and Molecular Biology, School of Life Science and Technology, Harbin Normal University, Harbin, People's Republic of China
| | - Haihang Wang
- Department of Chemistry and Molecular Biology, School of Life Science and Technology, Harbin Normal University, Harbin, People's Republic of China
| | - Zaib-Un Nisa
- General Botany Lab, Institute of Molecular Biology and Biotechnology, University of Lahore, Lahore, Pakistan
| | - Xiaoxia Jin
- Department of Chemistry and Molecular Biology, School of Life Science and Technology, Harbin Normal University, Harbin, People's Republic of China
| | - Lijie Yu
- Department of Chemistry and Molecular Biology, School of Life Science and Technology, Harbin Normal University, Harbin, People's Republic of China
| | - Legang Jing
- Department of Chemistry and Molecular Biology, School of Life Science and Technology, Harbin Normal University, Harbin, People's Republic of China
| | - Chao Chen
- Department of Chemistry and Molecular Biology, School of Life Science and Technology, Harbin Normal University, Harbin, People's Republic of China
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13
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Liu L, Li K, Zhou X, Fang C. Integrative Analysis of Metabolome and Transcriptome Reveals the Role of Strigolactones in Wounding-Induced Rice Metabolic Re-Programming. Metabolites 2022; 12:metabo12090789. [PMID: 36144193 PMCID: PMC9501228 DOI: 10.3390/metabo12090789] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2022] [Revised: 08/22/2022] [Accepted: 08/24/2022] [Indexed: 11/16/2022] Open
Abstract
Plants have evolved mechanisms to adapt to wounding, a threat occurring separately or concomitantly with other stresses. During the last decades, many efforts have been made to elucidate the wounding signaling transduction. However, we know little about the metabolic re-programming under wounding, let alone whether and how strigolactones (SLs) participate in this progress. Here, we reported a metabolomic and transcriptomic analysis of SLs synthetic and signal mutants in rice before and after wounding. A series of metabolites differentially responded to wounding in the SLs mutants and wild-type rice, among which flavones were enriched. Besides, the SLs mutants accumulated more jasmonic acid (JA) and jasmonyl isoleucine (JA-lle) than the wild-type rice after wounding, suggesting an interplay of SLs and JAs during responding to wounding. Further transcriptome data showed that cell wall, ethylene, and flavones pathways might be affected by wounding and SLs. In addition, we identified candidate genes regulated by SLs and responding to wounding. In conclusion, our work provides new insights into wounding-induced metabolic re-programming and the SLs’ function.
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Affiliation(s)
- Ling Liu
- Sanya Nanfan Research Institute of Hainan University Hainan, Yazhou Bay Seed Laboratory, Sanya 572025, China
- College of Tropical Crops, Hainan University, Haikou 570288, China
| | - Kang Li
- Sanya Nanfan Research Institute of Hainan University Hainan, Yazhou Bay Seed Laboratory, Sanya 572025, China
- College of Tropical Crops, Hainan University, Haikou 570288, China
| | - Xiujuan Zhou
- College of Tropical Crops, Hainan University, Haikou 570288, China
| | - Chuanying Fang
- Sanya Nanfan Research Institute of Hainan University Hainan, Yazhou Bay Seed Laboratory, Sanya 572025, China
- College of Tropical Crops, Hainan University, Haikou 570288, China
- Correspondence:
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14
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Multiple Facets of Nitrogen: From Atmospheric Gas to Indispensable Agricultural Input. LIFE (BASEL, SWITZERLAND) 2022; 12:life12081272. [PMID: 36013451 PMCID: PMC9410007 DOI: 10.3390/life12081272] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/15/2022] [Revised: 08/08/2022] [Accepted: 08/16/2022] [Indexed: 11/17/2022]
Abstract
Nitrogen (N) is a gas and the fifth most abundant element naturally found in the atmosphere. N's role in agriculture and plant metabolism has been widely investigated for decades, and extensive information regarding this subject is available. However, the advent of sequencing technology and the advances in plant biotechnology, coupled with the growing interest in functional genomics-related studies and the various environmental challenges, have paved novel paths to rediscovering the fundamentals of N and its dynamics in physiological and biological processes, as well as biochemical reactions under both normal and stress conditions. This work provides a comprehensive review on multiple facets of N and N-containing compounds in plants disseminated in the literature to better appreciate N in its multiple dimensions. Here, some of the ancient but fundamental aspects of N are revived and the advances in our understanding of N in the metabolism of plants is portrayed. It is established that N is indispensable for achieving high plant productivity and fitness. However, the use of N-rich fertilizers in relatively higher amounts negatively affects the environment. Therefore, a paradigm shift is important to shape to the future use of N-rich fertilizers in crop production and their contribution to the current global greenhouse gases (GHGs) budget would help tackle current global environmental challenges toward a sustainable agriculture.
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15
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Li Y, He Y, Liu Z, Qin T, Wang L, Chen Z, Zhang B, Zhang H, Li H, Liu L, Zhang J, Yuan W. OsSPL14 acts upstream of OsPIN1b and PILS6b to modulate axillary bud outgrowth by fine-tuning auxin transport in rice. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2022; 111:1167-1182. [PMID: 35765202 DOI: 10.1111/tpj.15884] [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: 01/12/2022] [Revised: 06/16/2022] [Accepted: 06/23/2022] [Indexed: 06/15/2023]
Abstract
As a multigenic trait, rice tillering can optimize plant architecture for the maximum agronomic yield. SQUAMOSA PROMOTER BINDING PROTEIN-LIKE14 (OsSPL14) has been demonstrated to be necessary and sufficient to inhibit rice branching, but the underlying mechanism remains largely unclear. Here, we demonstrated that OsSPL14, which is cleaved by miR529 and miR156, inhibits tillering by fine-tuning auxin transport in rice. RNA interference of OsSPL14 or miR529 and miR156 overexpression significantly increased the tiller number, whereas OsSPL14 overexpression decreased the tiller number. Histological analysis revealed that the OsSPL14-overexpressing line had normal initiation of axillary buds but inhibited outgrowth of tillers. Moreover, OsSPL14 was found to be responsive to indole-acetic acid and 1-naphthylphthalamic acid, and RNA interference of OsSPL14 reduced polar auxin transport and increased 1-naphthylphthalamic acid sensitivity of rice plants. Further analysis revealed that OsSPL14 directly binds to the promoter of PIN-FORMED 1b (OsPIN1b) and PIN-LIKE6b (PILS6b) to regulate their expression positively. OsPIN1b and PILS6b were highly expressed in axillary buds and proved involved in bud outgrowth. Loss of function of OsPIN1b or PILS6b increased the tiller number of rice. Taken together, our findings suggested that OsSPL14 could control axillary bud outgrowth and tiller number by activating the expression of OsPIN1b and PILS6b to fine-tune auxin transport in rice.
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Affiliation(s)
- Yan Li
- State Key Laboratory of Biocatalysis and Enzyme Engineering, Hubei Collaborative Innovation Center for Green Transformation of Bio-Resources, School of Life Sciences, Hubei University, Wuhan, 430062, China
- Huazhong Agricultural University, Wuhan, 430070, China
| | - Yizhou He
- Oil Crops Research Institute of Chinese Academy of Agricultural Sciences, Wuhan, 430062, China
| | - Zhixin Liu
- State Key Laboratory of Biocatalysis and Enzyme Engineering, Hubei Collaborative Innovation Center for Green Transformation of Bio-Resources, School of Life Sciences, Hubei University, Wuhan, 430062, China
| | - Tian Qin
- State Key Laboratory of Biocatalysis and Enzyme Engineering, Hubei Collaborative Innovation Center for Green Transformation of Bio-Resources, School of Life Sciences, Hubei University, Wuhan, 430062, China
| | - Lei Wang
- Huazhong Agricultural University, Wuhan, 430070, China
| | - Zhihui Chen
- Huazhong Agricultural University, Wuhan, 430070, China
| | - Biaoming Zhang
- State Key Laboratory of Biocatalysis and Enzyme Engineering, Hubei Collaborative Innovation Center for Green Transformation of Bio-Resources, School of Life Sciences, Hubei University, Wuhan, 430062, China
| | - Haitao Zhang
- State Key Laboratory of Biocatalysis and Enzyme Engineering, Hubei Collaborative Innovation Center for Green Transformation of Bio-Resources, School of Life Sciences, Hubei University, Wuhan, 430062, China
| | - Haitao Li
- State Key Laboratory of Biocatalysis and Enzyme Engineering, Hubei Collaborative Innovation Center for Green Transformation of Bio-Resources, School of Life Sciences, Hubei University, Wuhan, 430062, China
| | - Li Liu
- State Key Laboratory of Biocatalysis and Enzyme Engineering, Hubei Collaborative Innovation Center for Green Transformation of Bio-Resources, School of Life Sciences, Hubei University, Wuhan, 430062, China
| | - Jian Zhang
- State Key Lab of Rice Biology, China National Rice Research Institute, Hangzhou, 311400, China
| | - Wenya Yuan
- State Key Laboratory of Biocatalysis and Enzyme Engineering, Hubei Collaborative Innovation Center for Green Transformation of Bio-Resources, School of Life Sciences, Hubei University, Wuhan, 430062, China
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