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Kuczyńska A, Michałek M, Ogrodowicz P, Kempa M, Witaszak N, Dziurka M, Gruszka D, Daszkowska-Golec A, Szarejko I, Krajewski P, Mikołajczak K. Drought-induced molecular changes in crown of various barley phytohormone mutants. PLANT SIGNALING & BEHAVIOR 2024; 19:2371693. [PMID: 38923879 PMCID: PMC11210921 DOI: 10.1080/15592324.2024.2371693] [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: 02/26/2024] [Accepted: 06/03/2024] [Indexed: 06/28/2024]
Abstract
One of the main signal transduction pathways that modulate plant growth and stress responses, including drought, is the action of phytohormones. Recent advances in omics approaches have facilitated the exploration of plant genomes. However, the molecular mechanisms underlying the response in the crown of barley, which plays an essential role in plant performance under stress conditions and regeneration after stress treatment, remain largely unclear. The objective of the present study was the elucidation of drought-induced molecular reactions in the crowns of different barley phytohormone mutants. We verified the hypothesis that defects of gibberellins, brassinosteroids, and strigolactones action affect the transcriptomic, proteomic, and hormonal response of barley crown to the transitory drought influencing plant development under stress. Moreover, we assumed that due to the strong connection between strigolactones and branching the hvdwarf14.d mutant, with dysfunctional receptor of strigolactones, manifests the most abundant alternations in crowns and phenotype under drought. Finally, we expected to identify components underlying the core response to drought which are independent of the genetic background. Large-scale analyses were conducted using gibberellins-biosynthesis, brassinosteroids-signaling, and strigolactones-signaling mutants, as well as reference genotypes. Detailed phenotypic evaluation was also conducted. The obtained results clearly demonstrated that hormonal disorders caused by mutations in the HvGA20ox2, HvBRI1, and HvD14 genes affected the multifaceted reaction of crowns to drought, although the expression of these genes was not induced by stress. The study further detected not only genes and proteins that were involved in the drought response and reacted specifically in mutants compared to the reaction of reference genotypes and vice versa, but also the candidates that may underlie the genotype-universal stress response. Furthermore, candidate genes involved in phytohormonal interactions during the drought response were identified. We also found that the interplay between hormones, especially gibberellins and auxins, as well as strigolactones and cytokinins may be associated with the regulation of branching in crowns exposed to drought. Overall, the present study provides novel insights into the molecular drought-induced responses that occur in barley crowns.
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Affiliation(s)
- Anetta Kuczyńska
- Institute of Plant Genetics, Polish Academy of Sciences, Poznań, Poland
| | - Martyna Michałek
- Institute of Plant Genetics, Polish Academy of Sciences, Poznań, Poland
| | - Piotr Ogrodowicz
- Institute of Plant Genetics, Polish Academy of Sciences, Poznań, Poland
| | - Michał Kempa
- Institute of Plant Genetics, Polish Academy of Sciences, Poznań, Poland
| | - Natalia Witaszak
- Institute of Plant Genetics, Polish Academy of Sciences, Poznań, Poland
| | - Michał Dziurka
- Faculty of Natural Sciences, The Franciszek Górski Institute of Plant Physiology Polish Academy of Sciences, Krakow, Poland
| | - Damian Gruszka
- Institute of Biology, Biotechnology and Environmental Protection, Faculty of Natural Sciences, University of Silesia in Katowice, Katowice, Poland
| | - Agata Daszkowska-Golec
- Institute of Biology, Biotechnology and Environmental Protection, Faculty of Natural Sciences, University of Silesia in Katowice, Katowice, Poland
| | - Iwona Szarejko
- Institute of Biology, Biotechnology and Environmental Protection, Faculty of Natural Sciences, University of Silesia in Katowice, Katowice, Poland
| | - Paweł Krajewski
- Institute of Plant Genetics, Polish Academy of Sciences, Poznań, Poland
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Tian Z, Chen B, Li H, Pei X, Sun Y, Sun G, Pan Z, Dai P, Gao X, Geng X, Peng Z, Jia Y, Hu D, Wang L, Pang B, Zhang A, Du X, He S. Strigolactone-gibberellin crosstalk mediated by a distant silencer fine-tunes plant height in upland cotton. MOLECULAR PLANT 2024; 17:1539-1557. [PMID: 39169630 DOI: 10.1016/j.molp.2024.08.007] [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: 03/06/2024] [Revised: 08/01/2024] [Accepted: 08/19/2024] [Indexed: 08/23/2024]
Abstract
Optimal plant height is crucial in modern agriculture, influencing lodging resistance and facilitating mechanized crop production. Upland cotton (Gossypium hirsutum) is the most important fiber crop globally; however, the genetic basis underlying plant height remains largely unexplored. In this study, we conducted a genome-wide association study to identify a major locus controlling plant height (PH1) in upland cotton. This locus encodes gibberellin 2-oxidase 1A (GhPH1) and features a 1133-bp structural variation (PAVPH1) located approximately 16 kb upstream. The presence or absence of PAVPH1 influences the expression of GhPH1, thereby affecting plant height. Further analysis revealed that a gibberellin-regulating transcription factor (GhGARF) recognizes and binds to a specific CATTTG motif in both the GhPH1 promoter and PAVPH1. This interaction downregulates GhPH1, indicating that PAVPH1 functions as a distant upstream silencer. Intriguingly, we found that DWARF53 (D53), a key repressor of the strigolactone (SL) signaling pathway, directly interacts with GhGARF to inhibit its binding to targets. Moreover, we identified a previously unrecognized gibberellin-SL crosstalk mechanism mediated by the GhD53-GhGARF-GhPH1/PAVPH1 module, which is crucial for regulating plant height in upland cotton. These findings shed light on the genetic basis and gene interaction network underlying plant height, providing valuable insights for the development of semi-dwarf cotton varieties through precise modulation of GhPH1 expression.
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Affiliation(s)
- Zailong Tian
- State Key Laboratory of Cotton Bio-breeding and Integrated Utilization, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, China; National Nanfan Research Institute (Sanya), Chinese Academy of Agricultural Sciences, Sanya, Hainan, China
| | - Baojun Chen
- State Key Laboratory of Cotton Bio-breeding and Integrated Utilization, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, China
| | - Hongge Li
- State Key Laboratory of Cotton Bio-breeding and Integrated Utilization, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, China; Zhengzhou Research Base, State Key Laboratory of Cotton Bio-breeding and Integrated Utilization, School of Agricultural Sciences, Zhengzhou University, Zhengzhou, China
| | - Xinxin Pei
- State Key Laboratory of Cotton Bio-breeding and Integrated Utilization, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, China
| | - Yaru Sun
- State Key Laboratory of Cotton Bio-breeding and Integrated Utilization, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, China
| | - Gaofei Sun
- School of Computer Science & Information Engineering, Anyang Institute of Technology, Anyang, China
| | - Zhaoe Pan
- State Key Laboratory of Cotton Bio-breeding and Integrated Utilization, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, China
| | - Panhong Dai
- School of Computer Science & Information Engineering, Anyang Institute of Technology, Anyang, China
| | - Xu Gao
- National Supercomputing Center in Zhengzhou, Zhengzhou University, Zhengzhou, China
| | - Xiaoli Geng
- State Key Laboratory of Cotton Bio-breeding and Integrated Utilization, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, China
| | - Zhen Peng
- State Key Laboratory of Cotton Bio-breeding and Integrated Utilization, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, China; Zhengzhou Research Base, State Key Laboratory of Cotton Bio-breeding and Integrated Utilization, School of Agricultural Sciences, Zhengzhou University, Zhengzhou, China
| | - Yinhua Jia
- State Key Laboratory of Cotton Bio-breeding and Integrated Utilization, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, China
| | - Daowu Hu
- State Key Laboratory of Cotton Bio-breeding and Integrated Utilization, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, China; National Nanfan Research Institute (Sanya), Chinese Academy of Agricultural Sciences, Sanya, Hainan, China
| | - Liru Wang
- State Key Laboratory of Cotton Bio-breeding and Integrated Utilization, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, China
| | - Baoyin Pang
- State Key Laboratory of Cotton Bio-breeding and Integrated Utilization, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, China
| | - Ai Zhang
- State Key Laboratory of Cotton Bio-breeding and Integrated Utilization, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, China
| | - Xiongming Du
- State Key Laboratory of Cotton Bio-breeding and Integrated Utilization, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, China; Zhengzhou Research Base, State Key Laboratory of Cotton Bio-breeding and Integrated Utilization, School of Agricultural Sciences, Zhengzhou University, Zhengzhou, China; National Nanfan Research Institute (Sanya), Chinese Academy of Agricultural Sciences, Sanya, Hainan, China.
| | - Shoupu He
- State Key Laboratory of Cotton Bio-breeding and Integrated Utilization, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, China; Zhengzhou Research Base, State Key Laboratory of Cotton Bio-breeding and Integrated Utilization, School of Agricultural Sciences, Zhengzhou University, Zhengzhou, China.
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Depaepe T, Prinsen E, Hu Y, Sanchez-Munoz R, Denoo B, Buyst D, Darouez H, Werbrouck S, Hayashi KI, Martins J, Winne J, Van Der Straeten D. Arinole, a novel auxin-stimulating benzoxazole, affects root growth and promotes adventitious root formation. JOURNAL OF EXPERIMENTAL BOTANY 2024; 75:5681-5702. [PMID: 38920303 DOI: 10.1093/jxb/erae282] [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: 04/17/2024] [Accepted: 06/25/2024] [Indexed: 06/27/2024]
Abstract
The triple response phenotype is characteristic for seedlings treated with the phytohormone ethylene or its direct precursor 1-aminocyclopropane-carboxylic acid, and is often employed to find novel chemical tools to probe ethylene responses. We identified a benzoxazole-urea derivative (B2) partially mimicking ethylene effects in a triple response bioassay. A phenotypic analysis demonstrated that B2 and its closest analogue arinole (ARI) induced phenotypic responses reminiscent of seedlings with elevated levels of auxin, including impaired hook development and inhibition of seedling growth. Specifically, ARI reduced longitudinal cell elongation in roots, while promoting cell division. In contrast to other natural or synthetic auxins, ARI mostly acts as an inducer of adventitious root development, with only limited effects on lateral root development. Quantification of free auxins and auxin biosynthetic precursors as well as auxin-related gene expression demonstrated that ARI boosts global auxin levels. In addition, analyses of auxin reporter lines and mutants, together with pharmacological assays with auxin-related inhibitors, confirmed that ARI effects are facilitated by TRYPTOPHAN AMINOTRANSFERASE1 (TAA1)-mediated auxin synthesis. ARI treatment in an array of species, including Arabidopsis, pea, tomato, poplar, and lavender, resulted in adventitious root formation, which is a desirable trait in both agriculture and horticulture.
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Affiliation(s)
- Thomas Depaepe
- Laboratory of Functional Plant Biology, Department of Biology, Faculty of Sciences, Ghent University, Ghent, Belgium
| | - Els Prinsen
- Laboratory of Integrated Molecular Plant Physiological Research (IMPRES), Department of Biology, Faculty of Sciences, University of Antwerp, Antwerp, Belgium
| | - Yuming Hu
- Laboratory of Functional Plant Biology, Department of Biology, Faculty of Sciences, Ghent University, Ghent, Belgium
| | - Raul Sanchez-Munoz
- Laboratory of Functional Plant Biology, Department of Biology, Faculty of Sciences, Ghent University, Ghent, Belgium
| | - Bram Denoo
- Laboratory of Organic Synthesis, Department of Organic and Macromolecular Chemistry, Faculty of Sciences, Ghent University, Ghent, Belgium
| | - Dieter Buyst
- NMR and Structure Analysis Research Group, Department of Organic and Macromolecular Chemistry, Faculty of Sciences, Ghent University, Ghent, Belgium
| | - Hajer Darouez
- Laboratory for Applied In Vitro Plant Biotechnology, Department of Plants and Crops, Faculty of Bioscience Engineering, Ghent University, Belgium
| | - Stefaan Werbrouck
- Laboratory for Applied In Vitro Plant Biotechnology, Department of Plants and Crops, Faculty of Bioscience Engineering, Ghent University, Belgium
| | - Ken-Ichiro Hayashi
- Natural Products Chemistry Lab, Department of Biochemistry, Okayama University of Science, Okayama, Japan
| | - José Martins
- NMR and Structure Analysis Research Group, Department of Organic and Macromolecular Chemistry, Faculty of Sciences, Ghent University, Ghent, Belgium
| | - Johan Winne
- Laboratory of Organic Synthesis, Department of Organic and Macromolecular Chemistry, Faculty of Sciences, Ghent University, Ghent, Belgium
| | - Dominique Van Der Straeten
- Laboratory of Functional Plant Biology, Department of Biology, Faculty of Sciences, Ghent University, Ghent, Belgium
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Sun Y, Tian Z, Zuo D, Cheng H, Wang Q, Zhang Y, Lv L, Song G. Strigolactone-induced degradation of SMXL7 and SMXL8 contributes to gibberellin- and auxin-mediated fiber cell elongation in cotton. THE PLANT CELL 2024; 36:3875-3893. [PMID: 39046066 PMCID: PMC11371155 DOI: 10.1093/plcell/koae212] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/22/2024] [Revised: 05/22/2024] [Accepted: 07/18/2024] [Indexed: 07/25/2024]
Abstract
Cotton (Gossypium) fiber length, a key trait determining fiber yield and quality, is highly regulated by a class of recently identified phytohormones, strigolactones (SLs). However, the underlying molecular mechanisms of SL signaling involved in fiber cell development are largely unknown. Here, we show that the SL signaling repressors MORE AXILLARY GROWTH2-LIKE7 (GhSMXL7) and GhSMXL8 negatively regulate cotton fiber elongation. Specifically, GhSMXL7 and GhSMXL8 inhibit the polyubiquitination and degradation of the gibberellin (GA)-triggered DELLA protein (GhSLR1). Biochemical analysis revealed that GhSMXL7 and GhSMXL8 physically interact with GhSLR1, which interferes with the association of GhSLR1 with the E3 ligase GA INSENSITIVE2 (GhGID2), leading to the repression of GA signal transduction. GhSMXL7 also interacts with the transcription factor GhHOX3, preventing its binding to the promoters of essential fiber elongation regulatory genes. Moreover, both GhSMXL7 and GhSMXL8 directly bind to the promoter regions of the AUXIN RESPONSE FACTOR (ARF) genes GhARF18-10A, GhARF18-10D, and GhARF19-7D to suppress their expression. Cotton plants in which GhARF18-10A, GhARF18-10D, and GhARF19-7D transcript levels had been reduced by virus-induced gene silencing (VIGS) displayed reduced fiber length compared with control plants. Collectively, our findings reveal a mechanism illustrating how SL integrates GA and auxin signaling to coordinately regulate plant cell elongation at the single-cell level.
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Affiliation(s)
- Yaru Sun
- State Key Laboratory of Cotton Bio-breeding and Integrated Utilization, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang 455000, China
| | - Zailong Tian
- State Key Laboratory of Cotton Bio-breeding and Integrated Utilization, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang 455000, China
- National Nanfan Research Institute (Sanya), Chinese Academy of Agricultural Sciences, Sanya, Hainan 572024, China
| | - Dongyun Zuo
- State Key Laboratory of Cotton Bio-breeding and Integrated Utilization, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang 455000, China
| | - Hailiang Cheng
- State Key Laboratory of Cotton Bio-breeding and Integrated Utilization, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang 455000, China
- Zhengzhou Research Base, State Key Laboratory of Cotton Bio-breeding and Integrated Utilization, School of Agricultural Sciences, Zhengzhou University, Zhengzhou 450001, China
| | - Qiaolian Wang
- State Key Laboratory of Cotton Bio-breeding and Integrated Utilization, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang 455000, China
| | - Youping Zhang
- State Key Laboratory of Cotton Bio-breeding and Integrated Utilization, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang 455000, China
| | - Limin Lv
- State Key Laboratory of Cotton Bio-breeding and Integrated Utilization, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang 455000, China
| | - Guoli Song
- State Key Laboratory of Cotton Bio-breeding and Integrated Utilization, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang 455000, China
- National Nanfan Research Institute (Sanya), Chinese Academy of Agricultural Sciences, Sanya, Hainan 572024, China
- Zhengzhou Research Base, State Key Laboratory of Cotton Bio-breeding and Integrated Utilization, School of Agricultural Sciences, Zhengzhou University, Zhengzhou 450001, China
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Kunc P, Medic A, Osterc G. Involvement of Auxin, Flavonoids and Strigolactones in the Different Rooting Ability of European Chestnut ( Castanea sativa) and Hybrids ( Castanea crenata × Castanea sativa). PLANTS (BASEL, SWITZERLAND) 2024; 13:2088. [PMID: 39124205 PMCID: PMC11314612 DOI: 10.3390/plants13152088] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/11/2024] [Revised: 07/21/2024] [Accepted: 07/25/2024] [Indexed: 08/12/2024]
Abstract
The aim of this study was to investigate the differences between Castanea sativa Mill. and Castanea crenata Siebold & Zucc. × Castanea sativa Mill. in rooting ability in relation to endogenous levels of auxin, auxin cofactors and inhibitors that influence rooting success. Leafy cuttings of the two commercial cultivars 'Marsol' and 'Maraval' (Castanea crenata × Castanea sativa) and the native accession 'Kozjak' (Castanea sativa) were analyzed. Endogenous indole-3-acetic acid (IAA) concentration was assessed at the beginning of propagation (day 0); in addition, strigolactones, flavonoids, rooting ability and quality were assessed 120 days after. The concentration of endogenous IAA in 'Maraval' (324.34 ± 28.66 ng g-1) and 'Marsol' (251.60 ± 35.44 ng g-1) was significantly higher than in 'Kozjak' (112.87 ± 35.44 ng g-1). The best rooting result was observed with the genotypes 'Maraval' (100.00 ± 0.00%) and 'Marsol' (90.48 ± 6.15%). A significantly lower strigol concentration was observed in the roots of 'Maraval' (75.54 ± 17.93 ng g-1) compared with other genotypes. The total flavonoid concentration in 'Maraval' was significantly higher (2794.99 ± 187.13 μg g-1) than in 'Kozjak' (1057.38 ± 61.05 μg g-1). Our results indicate that the concentration of endogenous IAA has a significant influence on rooting success. The results further indicate that in the case of flavonoids and strigolactones, not only the individual compounds but also their ratio is important for rooting success. Correlation coefficients calculated between analyzed compounds and rooting success point toward specific functions of flavonoids and strigolactones in the rooting of Castanea that need to be functionally analyzed.
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Affiliation(s)
| | | | - Gregor Osterc
- Department of Agronomy, Biotechnical Faculty, University of Ljubljana, Jamnikarjeva 101, SI-1000 Ljubljana, Slovenia; (P.K.); (A.M.)
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Wu D, Fu W, Wang N, Ye Y, He J, Wu K. Genome-Wide Identification and Expression Characterization of the D27 Gene Family of Capsicum annuum L. PLANTS (BASEL, SWITZERLAND) 2024; 13:2070. [PMID: 39124188 PMCID: PMC11314413 DOI: 10.3390/plants13152070] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/23/2024] [Revised: 07/24/2024] [Accepted: 07/24/2024] [Indexed: 08/12/2024]
Abstract
As a crucial member of the gene family involved in the biosynthesis of strigolactones, D27 plays an important regulatory role in plant branching and root development, which is essential for field management and yield increase in peppers (Capsicum annuum L.). To comprehensively understand the characteristics of the pepper D27 gene family, we identified three CaD27 genes. By analyzing their physicochemical properties, phylogenetic relationships, gene structures, promoters, and expression patterns in different tissues, the characteristics of the CaD27 gene family were revealed. The research results showed that these three CaD27 genes are located in three different chromosomes. Evolutionary analysis divided the members of CaD27 into three groups, and gene collinearity analysis did not find any duplicates, indicating the diversity and non-redundancy of the CaD27 gene family members. In addition, we identified and classified cis-elements in the promoter regions of CaD27 genes, with a relatively high proportion related to light and plant hormone responses. Expression pattern analysis showed that CaD27.1 is expressed in leaves, while CaD27.2 is expressed in roots, indicating tissue specificity. Furthermore, protein interaction predictions revealed an interaction between D27.2 and CCD7. This study provided important insights into the function and regulatory mechanisms of the CaD27 gene family and the role of strigolactones in plant growth and development.
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Affiliation(s)
- Di Wu
- Research Institute of Pepper, Guizhou Academy of Agricultural Science, Guiyang 550025, China; (D.W.); (W.F.); (N.W.); (Y.Y.)
| | - Wenting Fu
- Research Institute of Pepper, Guizhou Academy of Agricultural Science, Guiyang 550025, China; (D.W.); (W.F.); (N.W.); (Y.Y.)
| | - Nanyi Wang
- Research Institute of Pepper, Guizhou Academy of Agricultural Science, Guiyang 550025, China; (D.W.); (W.F.); (N.W.); (Y.Y.)
| | - Yong Ye
- Research Institute of Pepper, Guizhou Academy of Agricultural Science, Guiyang 550025, China; (D.W.); (W.F.); (N.W.); (Y.Y.)
| | - Jianwen He
- Research Institute of Pepper, Guizhou Academy of Agricultural Science, Guiyang 550025, China; (D.W.); (W.F.); (N.W.); (Y.Y.)
| | - Kangyun Wu
- Key Laboratory of Crop Genetic Resources and Germplasm Innovation in Karst Mountain Areas, Ministry of Agriculture and Rural Affairs, Guiyang 550025, China
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Tian Z, Qin H, Chen B, Pan Z, Jia Y, Du X, He S. GhMAX2 Contributes to Auxin-Mediated Fiber Elongation in Cotton ( Gossypium hirsutum). PLANTS (BASEL, SWITZERLAND) 2024; 13:2041. [PMID: 39124159 PMCID: PMC11314591 DOI: 10.3390/plants13152041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/17/2024] [Revised: 07/11/2024] [Accepted: 07/16/2024] [Indexed: 08/12/2024]
Abstract
Strigolactones (SLs) represent a new group of phytohormones that play a pivotal role in the regulation of plant shoot branching and the development of adventitious roots. In cotton (Gossypium hirsutum, Gh), SLs play a crucial role in the regulation of fiber cell elongation and secondary cell wall thickness. However, the underlying molecular mechanisms of SL signaling involved in fiber cell development are largely unknown. In this study, we report two SL-signaling genes, GhMAX2-3 and GhMAX2-6, which positively regulate cotton fiber elongation. Further protein-protein interaction and degradation assays showed that the repressor of the auxin cascade GhIAA17 serves as a substrate for the F-box E3 ligase GhMAX2. The in vivo ubiquitination assay suggested that GhMAX2-3 and GhMAX2-6 ubiquitinate GhIAA17 and coordinately degrade GhIAA17 with GhTIR1. The findings of this investigation offer valuable insights into the roles of GhMAX2-mediated SL signaling in cotton and establish a solid foundation for future endeavors aimed at optimizing cotton plant cultivation.
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Affiliation(s)
- Zailong Tian
- National Nanfan Research Institute (Sanya), Chinese Academy of Agricultural Sciences, Sanya 572024, China; (Z.T.); (X.D.)
- Zhengzhou Research Base, National Key Laboratory of Cotton Bio-Breeding and Integrated Utilization, School of Agricultural Sciences, Zhengzhou University, Zhengzhou 450001, China; (B.C.); (Y.J.)
- State Key Laboratory of Cotton Bio-breeding and Integrated Utilization, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang 455099, China; (H.Q.); (Z.P.)
| | - Haijin Qin
- State Key Laboratory of Cotton Bio-breeding and Integrated Utilization, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang 455099, China; (H.Q.); (Z.P.)
| | - Baojun Chen
- Zhengzhou Research Base, National Key Laboratory of Cotton Bio-Breeding and Integrated Utilization, School of Agricultural Sciences, Zhengzhou University, Zhengzhou 450001, China; (B.C.); (Y.J.)
- State Key Laboratory of Cotton Bio-breeding and Integrated Utilization, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang 455099, China; (H.Q.); (Z.P.)
| | - Zhaoe Pan
- State Key Laboratory of Cotton Bio-breeding and Integrated Utilization, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang 455099, China; (H.Q.); (Z.P.)
| | - Yinhua Jia
- Zhengzhou Research Base, National Key Laboratory of Cotton Bio-Breeding and Integrated Utilization, School of Agricultural Sciences, Zhengzhou University, Zhengzhou 450001, China; (B.C.); (Y.J.)
- State Key Laboratory of Cotton Bio-breeding and Integrated Utilization, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang 455099, China; (H.Q.); (Z.P.)
| | - Xiongming Du
- National Nanfan Research Institute (Sanya), Chinese Academy of Agricultural Sciences, Sanya 572024, China; (Z.T.); (X.D.)
- Zhengzhou Research Base, National Key Laboratory of Cotton Bio-Breeding and Integrated Utilization, School of Agricultural Sciences, Zhengzhou University, Zhengzhou 450001, China; (B.C.); (Y.J.)
- State Key Laboratory of Cotton Bio-breeding and Integrated Utilization, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang 455099, China; (H.Q.); (Z.P.)
| | - Shoupu He
- National Nanfan Research Institute (Sanya), Chinese Academy of Agricultural Sciences, Sanya 572024, China; (Z.T.); (X.D.)
- Zhengzhou Research Base, National Key Laboratory of Cotton Bio-Breeding and Integrated Utilization, School of Agricultural Sciences, Zhengzhou University, Zhengzhou 450001, China; (B.C.); (Y.J.)
- State Key Laboratory of Cotton Bio-breeding and Integrated Utilization, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang 455099, China; (H.Q.); (Z.P.)
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Adegbaju MS, Ajose T, Adegbaju IE, Omosebi T, Ajenifujah-Solebo SO, Falana OY, Shittu OB, Adetunji CO, Akinbo O. Genetic engineering and genome editing technologies as catalyst for Africa's food security: the case of plant biotechnology in Nigeria. Front Genome Ed 2024; 6:1398813. [PMID: 39045572 PMCID: PMC11263695 DOI: 10.3389/fgeed.2024.1398813] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2024] [Accepted: 05/15/2024] [Indexed: 07/25/2024] Open
Abstract
Many African countries are unable to meet the food demands of their growing population and the situation is worsened by climate change and disease outbreaks. This issue of food insecurity may lead to a crisis of epic proportion if effective measures are not in place to make more food available. Thus, deploying biotechnology towards the improvement of existing crop varieties for tolerance or resistance to both biotic and abiotic stresses is crucial to increasing crop production. In order to optimize crop production, several African countries have implemented strategies to make the most of this innovative technology. For example, Nigerian government has implemented the National Biotechnology Policy to facilitate capacity building, research, bioresource development and commercialization of biotechnology products for over two decades. Several government ministries, research centers, universities, and agencies have worked together to implement the policy, resulting in the release of some genetically modified crops to farmers for cultivation and Commercialization, which is a significant accomplishment. However, the transgenic crops were only brought to Nigeria for confined field trials; the manufacturing of the transgenic crops took place outside the country. This may have contributed to the suspicion of pressure groups and embolden proponents of biotechnology as an alien technology. Likewise, this may also be the underlying issue preventing the adoption of biotechnology products in other African countries. It is therefore necessary that African universities develop capacity in various aspects of biotechnology, to continuously train indigenous scientists who can generate innovative ideas tailored towards solving problems that are peculiar to respective country. Therefore, this study intends to establish the role of genetic engineering and genome editing towards the achievement of food security in Africa while using Nigeria as a case study. In our opinion, biotechnology approaches will not only complement conventional breeding methods in the pursuit of crop improvements, but it remains a viable and sustainable means of tackling specific issues hindering optimal crop production. Furthermore, we suggest that financial institutions should offer low-interest loans to new businesses. In order to promote the growth of biotechnology products, especially through the creation of jobs and revenues through molecular farming.
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Affiliation(s)
- Muyiwa Seyi Adegbaju
- Department of Crop, Soil and Pest Management, Federal University of Technology Akure, Akure, Ondo, Nigeria
| | - Titilayo Ajose
- Fruits and Spices Department, National Horticultural Institute, Ibadan, Oyo, Nigeria
| | | | - Temitayo Omosebi
- Department of Agricultural Technology, Federal College of Forestry, Jos, Nigeria
| | | | - Olaitan Yetunde Falana
- Department of Genetics, Genomic and Bioinformatics, National Biotechnology Research and Development Agency, Abuja, Nigeria
| | - Olufunke Bolatito Shittu
- Department of Microbiology, College of Biosciences, Federal University of Agriculture, Abeokuta, Nigeria
| | | | - Olalekan Akinbo
- African Union Development Agency-NEPAD, Office of Science, Technology and Innovation, Midrand, South Africa
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9
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Zhang Y, Li J, Guo K, Wang T, Gao L, Sun Z, Ma C, Wang C, Tian Y, Zheng X. Strigolactones alleviate AlCl 3 stress by vacuolar compartmentalization and cell wall blocking in apple. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2024; 119:197-217. [PMID: 38565306 DOI: 10.1111/tpj.16753] [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: 06/06/2023] [Revised: 02/22/2024] [Accepted: 03/20/2024] [Indexed: 04/04/2024]
Abstract
Poor management and excess fertilization of apple (Malus domestica Borkh.) orchards are causing increasingly serious soil acidification, resulting in Al toxicity and direct poisoning of roots. Strigolactones (SLs) are reported to be involved in plant responses to abiotic stress, but their role and mechanism under AlCl3 stress remain unknown. Here, we found that applying 1 μm GR24 (an SL analoge) significantly alleviated AlCl3 stress of M26 apple rootstock, mainly by blocking the movement of Al through cell wall and by vacuolar compartmentalization of Al. RNA-seq analysis identified the core transcription factor gene MdWRKY53, and overexpressing MdWRKY53 enhanced AlCl3 tolerance in transgenic apple plants through the same mechanism as GR24. Subsequently, we identified MdPMEI45 (encoding pectin methylesterase inhibitor) and MdALS3 (encoding an Al transporter) as downstream target genes of MdWRKY53 using chromatin immunoprecipitation followed by sequencing (ChIP-seq). GR24 enhanced the interaction between MdWRKY53 and the transcription factor MdTCP15, further increasing the binding of MdWRKY53 to the MdPMEI45 promoter and inducing MdPMEI45 expression to prevent Al from crossing cell wall. MdWRKY53 also bound to the promoter of MdALS3 and enhanced its transcription to compartmentalize Al in vacuoles under AlCl3 stress. We therefore identified two modules involved in alleviating AlCl3 stress in woody plant apple: the SL-WRKY+TCP-PMEI module required for excluding external Al by blocking the entry of Al3+ into cells and the SL-WRKY-ALS module allowing internal detoxification of Al through vacuolar compartmentalization. These findings lay a foundation for the practical application of SLs in agriculture.
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Affiliation(s)
- Yong Zhang
- College of Horticulture, Qingdao Agricultural University, Qingdao, 266109, China
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Guiyang, 550025, China
| | - Jianyu Li
- College of Horticulture, Qingdao Agricultural University, Qingdao, 266109, China
- Engineering Laboratory of Genetic Improvement of Horticultural Crops of Shandong Province, Qingdao, 266109, China
| | - Kexin Guo
- College of Horticulture, Qingdao Agricultural University, Qingdao, 266109, China
- Engineering Laboratory of Genetic Improvement of Horticultural Crops of Shandong Province, Qingdao, 266109, China
| | - Tianchao Wang
- College of Horticulture, Qingdao Agricultural University, Qingdao, 266109, China
- Engineering Laboratory of Genetic Improvement of Horticultural Crops of Shandong Province, Qingdao, 266109, China
| | - Lijie Gao
- College of Horticulture, Qingdao Agricultural University, Qingdao, 266109, China
- Engineering Laboratory of Genetic Improvement of Horticultural Crops of Shandong Province, Qingdao, 266109, China
| | - Zhijuan Sun
- College of Life Science, Qingdao Agricultural University, Qingdao, 266109, China
| | - Changqing Ma
- College of Horticulture, Qingdao Agricultural University, Qingdao, 266109, China
- Engineering Laboratory of Genetic Improvement of Horticultural Crops of Shandong Province, Qingdao, 266109, China
| | - Caihong Wang
- College of Horticulture, Qingdao Agricultural University, Qingdao, 266109, China
- Engineering Laboratory of Genetic Improvement of Horticultural Crops of Shandong Province, Qingdao, 266109, China
| | - Yike Tian
- College of Horticulture, Qingdao Agricultural University, Qingdao, 266109, China
- Engineering Laboratory of Genetic Improvement of Horticultural Crops of Shandong Province, Qingdao, 266109, China
| | - Xiaodong Zheng
- College of Horticulture, Qingdao Agricultural University, Qingdao, 266109, China
- Engineering Laboratory of Genetic Improvement of Horticultural Crops of Shandong Province, Qingdao, 266109, China
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10
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Jan M, Muhammad S, Jin W, Zhong W, Zhang S, Lin Y, Zhou Y, Liu J, Liu H, Munir R, Yue Q, Afzal M, Wang G. Modulating root system architecture: cross-talk between auxin and phytohormones. FRONTIERS IN PLANT SCIENCE 2024; 15:1343928. [PMID: 38390293 PMCID: PMC10881875 DOI: 10.3389/fpls.2024.1343928] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/24/2023] [Accepted: 01/08/2024] [Indexed: 02/24/2024]
Abstract
Root architecture is an important agronomic trait that plays an essential role in water uptake, soil compactions, nutrient recycling, plant-microbe interactions, and hormone-mediated signaling pathways. Recently, significant advancements have been made in understanding how the complex interactions of phytohormones regulate the dynamic organization of root architecture in crops. Moreover, phytohormones, particularly auxin, act as internal regulators of root development in soil, starting from the early organogenesis to the formation of root hair (RH) through diverse signaling mechanisms. However, a considerable gap remains in understanding the hormonal cross-talk during various developmental stages of roots. This review examines the dynamic aspects of phytohormone signaling, cross-talk mechanisms, and the activation of transcription factors (TFs) throughout various developmental stages of the root life cycle. Understanding these developmental processes, together with hormonal signaling and molecular engineering in crops, can improve our knowledge of root development under various environmental conditions.
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Affiliation(s)
- Mehmood Jan
- College of Horticulture, South China Agricultural University, Guangzhou, Guangdong, China
- Guangdong Provincial Key Laboratory of Utilization and Conservation of Food and Medicinal Resources in Northern Region, Shaoguan University, Shaoguan, China
- College of Agriculture, South China Agricultural University, Guangzhou, Guangdong, China
| | - Sajid Muhammad
- Department of Agronomy, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, China
| | - Weicai Jin
- College of Agriculture, South China Agricultural University, Guangzhou, Guangdong, China
- Heyuan Division of Guangdong Laboratory for Lingnan Modern Agricultural Science and Technology, Heyuan, Guangdong, China
| | - Wenhao Zhong
- College of Agriculture, South China Agricultural University, Guangzhou, Guangdong, China
| | - Shaolong Zhang
- College of Horticulture, South China Agricultural University, Guangzhou, Guangdong, China
- Heyuan Division of Guangdong Laboratory for Lingnan Modern Agricultural Science and Technology, Heyuan, Guangdong, China
| | - Yanjie Lin
- College of Agriculture, South China Agricultural University, Guangzhou, Guangdong, China
| | - Yueni Zhou
- College of Agriculture, South China Agricultural University, Guangzhou, Guangdong, China
| | - Jinlong Liu
- College of Agriculture, South China Agricultural University, Guangzhou, Guangdong, China
| | - Haifeng Liu
- College of Agriculture, South China Agricultural University, Guangzhou, Guangdong, China
- Heyuan Division of Guangdong Laboratory for Lingnan Modern Agricultural Science and Technology, Heyuan, Guangdong, China
| | - Raheel Munir
- Department of Agronomy, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, China
| | - Qiang Yue
- Guangdong Provincial Key Laboratory of Utilization and Conservation of Food and Medicinal Resources in Northern Region, Shaoguan University, Shaoguan, China
| | - Muhammad Afzal
- College of Horticulture, South China Agricultural University, Guangzhou, Guangdong, China
- Guangdong Provincial Key Laboratory of Utilization and Conservation of Food and Medicinal Resources in Northern Region, Shaoguan University, Shaoguan, China
- College of Agriculture, South China Agricultural University, Guangzhou, Guangdong, China
| | - Guoping Wang
- College of Horticulture, South China Agricultural University, Guangzhou, Guangdong, China
- Heyuan Division of Guangdong Laboratory for Lingnan Modern Agricultural Science and Technology, Heyuan, Guangdong, China
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11
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Özbilen A, Sezer F, Taşkin KM. Identification and expression of strigolactone biosynthesis and signaling genes and the in vitro effects of strigolactones in olive ( Olea europaea L.). PLANT DIRECT 2024; 8:e568. [PMID: 38405354 PMCID: PMC10894696 DOI: 10.1002/pld3.568] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/15/2023] [Revised: 01/12/2024] [Accepted: 01/16/2024] [Indexed: 02/27/2024]
Abstract
Strigolactones (SLs), synthesized in plant roots, play a dual role in modulating plant growth and development, and in inducing the germination of parasitic plant seeds and arbuscular mycorrhizal fungi in the rhizosphere. As phytohormones, SLs are crucial in regulating branching and shaping plant architecture. Despite the significant impact of branching strategies on the yield performance of fruit crops, limited research has been conducted on SLs in these crops. In our study, we identified the transcript sequences of SL biosynthesis and signaling genes in olive (Olea europaea L.) using rapid amplification of cDNA ends. We predicted the corresponding protein sequences, analyzed their characteristics, and conducted molecular docking with bioinformatics tools. Furthermore, we quantified the expression levels of these genes in various tissues using quantitative real-time PCR. Our findings demonstrate the predominant expression of SL biosynthesis and signaling genes (OeD27, OeMAX3, OeMAX4, OeMAX1, OeD14, and OeMAX2) in roots and lateral buds, highlighting their importance in branching. Treatment with rac-GR24, an SL analog, enhanced the germination frequency of olive seeds in vitro compared with untreated embryos. Conversely, inhibition of SL biosynthesis with TIS108 increased lateral bud formation in a hard-to-root cultivar, underscoring the role of SLs as phytohormones in olives. These results suggest that modifying SL biosynthesis and signaling pathways could offer novel approaches for olive breeding, with potential applicability to other fruit crops.
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Affiliation(s)
- Aslıhan Özbilen
- Department of BiologyCanakkale Onsekiz Mart UniversityCanakkaleTurkey
| | - Fatih Sezer
- Department of Molecular Biology and GeneticsCanakkale Onsekiz Mart UniversityCanakkaleTurkey
| | - Kemal Melih Taşkin
- Department of Molecular Biology and GeneticsCanakkale Onsekiz Mart UniversityCanakkaleTurkey
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12
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Lucido A, Andrade F, Basallo O, Eleiwa A, Marin-Sanguino A, Vilaprinyo E, Sorribas A, Alves R. Modeling the effects of strigolactone levels on maize root system architecture. FRONTIERS IN PLANT SCIENCE 2024; 14:1329556. [PMID: 38273953 PMCID: PMC10808495 DOI: 10.3389/fpls.2023.1329556] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/29/2023] [Accepted: 12/18/2023] [Indexed: 01/27/2024]
Abstract
Maize is the most in-demand staple crop globally. Its production relies strongly on the use of fertilizers for the supply of nitrogen, phosphorus, and potassium, which the plant absorbs through its roots, together with water. The architecture of maize roots is determinant in modulating how the plant interacts with the microbiome and extracts nutrients and water from the soil. As such, attempts to use synthetic biology and modulate that architecture to make the plant more resilient to drought and parasitic plants are underway. These attempts often try to modulate the biosynthesis of hormones that determine root architecture and growth. Experiments are laborious and time-consuming, creating the need for simulation platforms that can integrate metabolic models and 3D root growth models and predict the effects of synthetic biology interventions on both, hormone levels and root system architectures. Here, we present an example of such a platform that is built using Mathematica. First, we develop a root model, and use it to simulate the growth of many unique 3D maize root system architectures (RSAs). Then, we couple this model to a metabolic model that simulates the biosynthesis of strigolactones, hormones that modulate root growth and development. The coupling allows us to simulate the effect of changing strigolactone levels on the architecture of the roots. We then integrate the two models in a simulation platform, where we also add the functionality to analyze the effect of strigolactone levels on root phenotype. Finally, using in silico experiments, we show that our models can reproduce both the phenotype of wild type maize, and the effect that varying strigolactone levels have on changing the architecture of maize roots.
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Affiliation(s)
- Abel Lucido
- Systems Biology Group, Department Ciències Mèdiques Bàsiques, Faculty of Medicine, Universitat de Lleida, Lleida, Spain
- Institut de Recerca Biomèdica de Lleida (IRBLleida), Lleida, Spain
| | - Fabian Andrade
- Systems Biology Group, Department Ciències Mèdiques Bàsiques, Faculty of Medicine, Universitat de Lleida, Lleida, Spain
- Institut de Recerca Biomèdica de Lleida (IRBLleida), Lleida, Spain
| | - Oriol Basallo
- Systems Biology Group, Department Ciències Mèdiques Bàsiques, Faculty of Medicine, Universitat de Lleida, Lleida, Spain
- Institut de Recerca Biomèdica de Lleida (IRBLleida), Lleida, Spain
| | - Abderrahmane Eleiwa
- Systems Biology Group, Department Ciències Mèdiques Bàsiques, Faculty of Medicine, Universitat de Lleida, Lleida, Spain
- Institut de Recerca Biomèdica de Lleida (IRBLleida), Lleida, Spain
| | - Alberto Marin-Sanguino
- Systems Biology Group, Department Ciències Mèdiques Bàsiques, Faculty of Medicine, Universitat de Lleida, Lleida, Spain
- Institut de Recerca Biomèdica de Lleida (IRBLleida), Lleida, Spain
| | - Ester Vilaprinyo
- Systems Biology Group, Department Ciències Mèdiques Bàsiques, Faculty of Medicine, Universitat de Lleida, Lleida, Spain
- Institut de Recerca Biomèdica de Lleida (IRBLleida), Lleida, Spain
| | - Albert Sorribas
- Systems Biology Group, Department Ciències Mèdiques Bàsiques, Faculty of Medicine, Universitat de Lleida, Lleida, Spain
- Institut de Recerca Biomèdica de Lleida (IRBLleida), Lleida, Spain
| | - Rui Alves
- Systems Biology Group, Department Ciències Mèdiques Bàsiques, Faculty of Medicine, Universitat de Lleida, Lleida, Spain
- Institut de Recerca Biomèdica de Lleida (IRBLleida), Lleida, Spain
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13
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Liu G, Li Y, Si J, Lu R, Hui M. Genetic Model Identification and Major QTL Mapping for Petiole Thickness in Non-Heading Chinese Cabbage. Int J Mol Sci 2024; 25:802. [PMID: 38255876 PMCID: PMC10815893 DOI: 10.3390/ijms25020802] [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: 12/06/2023] [Revised: 12/22/2023] [Accepted: 12/22/2023] [Indexed: 01/24/2024] Open
Abstract
Petioles of non-heading Chinese cabbage are not only an important edible part but also a conduit for nutrient transport, holding significant agricultural and research value. In this study, we conducted a comprehensive genetic analysis of petiole-related traits using a segregating population. Modern quantitative genetic approaches were applied to investigate the genetic regulation of petiole thickness. The results indicated that petiole thickness is a quantitative trait, and the identified genetic model was consistent with two pairs of additive-dominant main genes and additive-dominant polygenes (2MG-AD). BSA-seq analysis identified a major effect of QTL controlling petiole thickness on chromosome A09: 42.08-45.09 Mb, spanning 3.01 Mb, designated as QTL-BrLH9. Utilizing InDel markers, the interval was narrowed down to 51 kb, encompassing 14 genes with annotations for 10 of them. Within the interval, four mutated genes were detected. Combined with gene annotation, protein sequence analysis, and homology alignment, it was found that BraA09g063520.3C's homologous gene SMXL6 in Arabidopsis (Arabidopsis thaliana (L.) Heynh) is an inhibitor of the coding and synthesis of the strigolactone pathway. Strigolactone (SLs) plays an important role in plant growth and development. The cloning results showed that multiple frameshift mutations and non-synonymous mutations occurred on the exon. The qPCR results showed that the expression of the gene was significantly different between the two parents at the adult stage, so it was speculated that it would lead to changes in petiole thickness. BraA09g063520.3C was predicted as the final candidate gene.
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Affiliation(s)
| | | | | | | | - Maixia Hui
- Vegetables Engineering and Technology Research Center of Shaanxi Province, College of Horticulture, Northwest A & F University, Yangling, Xianyang 712100, China; (G.L.); (Y.L.); (J.S.); (R.L.)
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14
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Cheng Y, Li M, Xu P. Allelochemicals: A source for developing economically and environmentally friendly plant growth regulators. Biochem Biophys Res Commun 2024; 690:149248. [PMID: 37992526 DOI: 10.1016/j.bbrc.2023.149248] [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: 09/28/2023] [Revised: 11/07/2023] [Accepted: 11/13/2023] [Indexed: 11/24/2023]
Abstract
Allelochemicals are specific secondary metabolites that can exhibit autotoxicity by inhibiting the growth of the same plant species that produced them. These metabolites have been found to affect various physical processes during plant growth and development, including inhibition of seed germination, photosynthesis, respiration, root growth, and nutrient uptake, with diverse mechanisms involving cell destruction, oxidative homeostasis and photoinhibition. In some cases, allelochemicals can also have positive effects on plant growth and development. In addition to their ecological significance, allelochemicals also possess potential as plant growth regulators (PGRs) due to their extensive physiological effects. However, a comprehensive summary of the development and applications of allelochemicals as PGRs is currently lacking. In this review, we present an overview of the sources and categories of allelochemicals, discuss their effects and the underlying mechanisms on plant growth and development. We showcase numerous instances of key phytohormonal allelochemicals and non-phytohormonal allelochemicals, highlighting their potential as candidates for the development of PGRs. This review aims to provide a theoretical basis for the development of economical, safe and effective PGRs utilizing allelochemicals, and emphasizes the need for further research in this area.
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Affiliation(s)
- Yusu Cheng
- Key Laboratory of Specialty Agri-Product Quality and Hazard Controlling Technology of Zhejiang, College of Life Sciences, China Jiliang University, Hangzhou, 310018, PR China.
| | - Mingxuan Li
- Key Laboratory of Specialty Agri-Product Quality and Hazard Controlling Technology of Zhejiang, College of Life Sciences, China Jiliang University, Hangzhou, 310018, PR China.
| | - Pei Xu
- Key Laboratory of Specialty Agri-Product Quality and Hazard Controlling Technology of Zhejiang, College of Life Sciences, China Jiliang University, Hangzhou, 310018, PR China.
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15
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Wang X, Li Z, Shi Y, Liu Z, Zhang X, Gong Z, Yang S. Strigolactones promote plant freezing tolerance by releasing the WRKY41-mediated inhibition of CBF/DREB1 expression. EMBO J 2023; 42:e112999. [PMID: 37622245 PMCID: PMC10548171 DOI: 10.15252/embj.2022112999] [Citation(s) in RCA: 18] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2022] [Revised: 08/05/2023] [Accepted: 08/08/2023] [Indexed: 08/26/2023] Open
Abstract
Cold stress is a major abiotic stress that adversely affects plant growth and crop productivity. The C-REPEAT BINDING FACTOR/DRE BINDING FACTOR 1 (CBF/DREB1) transcriptional regulatory cascade plays a key role in regulating cold acclimation and freezing tolerance in Arabidopsis (Arabidopsis thaliana). Here, we show that max (more axillary growth) mutants deficient in strigolactone biosynthesis and signaling display hypersensitivity to freezing stress. Exogenous application of GR245DS , a strigolactone analog, enhances freezing tolerance in wild-type plants and strigolactone-deficient mutants and promotes the cold-induced expression of CBF genes. Biochemical analysis showed that the transcription factor WRKY41 serves as a substrate for the F-box E3 ligase MAX2. WRKY41 directly binds to the W-box in the promoters of CBF genes and represses their expression, negatively regulating cold acclimation and freezing tolerance. MAX2 ubiquitinates WRKY41, thus marking it for cold-induced degradation and thereby alleviating the repression of CBF expression. In addition, SL-mediated degradation of SMXLs also contributes to enhanced plant freezing tolerance by promoting anthocyanin biosynthesis. Taken together, our study reveals the molecular mechanism underlying strigolactones promote the cold stress response in Arabidopsis.
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Affiliation(s)
- Xi Wang
- State Key Laboratory of Plant Environmental Resilience, College of Biological SciencesChina Agricultural UniversityBeijingChina
| | - Zhuoyang Li
- State Key Laboratory of Plant Environmental Resilience, College of Biological SciencesChina Agricultural UniversityBeijingChina
| | - Yiting Shi
- State Key Laboratory of Plant Environmental Resilience, College of Biological SciencesChina Agricultural UniversityBeijingChina
| | - Ziyan Liu
- College of Plant Science and TechnologyBeijing University of AgricultureBeijingChina
| | - Xiaoyan Zhang
- State Key Laboratory of Plant Environmental Resilience, College of Biological SciencesChina Agricultural UniversityBeijingChina
| | - Zhizhong Gong
- State Key Laboratory of Plant Environmental Resilience, College of Biological SciencesChina Agricultural UniversityBeijingChina
- College of Life Sciences, Institute of Life Science and Green DevelopmentHebei UniversityBaodingChina
| | - Shuhua Yang
- State Key Laboratory of Plant Environmental Resilience, College of Biological SciencesChina Agricultural UniversityBeijingChina
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16
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Kodama K, Xie X, Kyozuka J. The D14 and KAI2 Orthologs of Gymnosperms Sense Strigolactones and KL Mimics, Respectively, and the Signals Are Transduced to Control Downstream Genes. PLANT & CELL PHYSIOLOGY 2023; 64:1057-1065. [PMID: 37489639 DOI: 10.1093/pcp/pcad072] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2023] [Revised: 06/21/2023] [Accepted: 07/02/2023] [Indexed: 07/26/2023]
Abstract
Strigolactones (SLs), lactone-containing carotenoid derivatives, function as signaling molecules in the rhizosphere, inducing symbiosis with arbuscular mycorrhizal. In addition, as a class of plant hormones, SLs control plant growth and development in flowering plants (angiosperms). Recent studies show that the ancestral function of SLs, which precede terrestrialization of plants, is as rhizosphere signaling molecules. SLs were then recruited as a class of plant hormones through the step-by-step acquisition of signaling components. The D14 gene encoding the SL receptor arose by gene duplication of KARRIKIN INSENSITIVE2 (KAI2), the receptor of karrikins and KAI2 ligand (KL), an unknown ligand, in the common ancestor of seed plants. KL signaling targets SMAX1, a repressor protein. On the other hand, the SL signaling targets SMXL78 subclade repressors, which arose by duplication of SMAX1 in angiosperms. Thus, gymnosperms contain the SL receptor D14 but not SMXL78, the SL signaling-specific repressor proteins. We studied two gymnosperm species, ginkgo (Ginkgo biloba) and Japanese umbrella pine (Sciadopitys verticillata), to clarify whether SLs are perceived and the signals are transduced in gymnosperms. We show that D14 and KAI2 of ginkgo and Japanese umbrella pine specifically perceive an SL analog and KL mimic, respectively. Furthermore, our results suggest that both SL signaling and KL signaling target SMAX1, and the specific localization of the receptor may result in the specificity of the signaling in gymnosperms.
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Affiliation(s)
- Kyoichi Kodama
- Graduate School of Life Sciences, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, Miyagi, 980-8577 Japan
| | - Xiaonan Xie
- Center for Bioscience Research and Education, Utsunomiya University, 350 Minemachi, Utsunomiya, Tochigi, 321-8505 Japan
| | - Junko Kyozuka
- Graduate School of Life Sciences, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, Miyagi, 980-8577 Japan
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17
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Ma B, Zhu J, Huang X. Diversification of plant SUPPRESSOR OF MAX2 1 (SMAX1)-like genes and genome-wide identification and characterization of cotton SMXL gene family. BMC PLANT BIOLOGY 2023; 23:419. [PMID: 37691127 PMCID: PMC10494346 DOI: 10.1186/s12870-023-04421-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Accepted: 08/25/2023] [Indexed: 09/12/2023]
Abstract
BACKGROUND Strigolactones (SLs) are a recently discovered class of plant hormones. SUPPRESSOR OF MAX2 1 (SMAX1)-like proteins, key component of the SL signaling pathway, have been studied extensively for their roles in regulating plant growth and development, such as plant branching. However, systematic identification and functional characterization of SMXL genes in cotton (Gossypium sp.), an important fiber and oil crop, has rarely been conducted. RESULTS We identified 210 SMXL genes from 21 plant genomes and examined their evolutionary relationships. The structural characteristics of the SMXL genes and their encoded proteins exhibited both consistency and diversity. All plant SMXL proteins possess a conserved Clp-N domain, P-loop NTPase, and EAR motif. We identified 63 SMXL genes in cotton and classified these into four evolutionary branches. Gene expression analysis revealed tissue-specific expression patterns of GhSMXL genes, with some upregulated in response to GR24 treatment. Protein co-expression network analysis showed that GhSMXL6, GhSMXL7-1, and GhSMXL7-2 mainly interact with proteins functioning in growth and development, while virus-induced gene silencing revealed that GhSMAX1-1 and GhSMAX1-2 suppress the growth and development of axillary buds. CONCLUSIONS SMXL gene family members show evolutionary diversification through the green plant lineage. GhSMXL6/7-1/7-2 genes play critical roles in the SL signaling pathway, while GhSMXL1-1 and GhSMXL1-2 function redundantly in growth of axillary buds. Characterization of the cotton SMXL gene family provides new insights into their roles in responding to SL signals and in plant growth and development. Genes identified in this study could be used as the candidate genes for improvement of plant architecture and crop yield.
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Affiliation(s)
- Bin Ma
- College of Life Sciences, Shihezi University, Shihezi, 832003, China
- Center for Crop Biotechnology, College of Agriculture, Anhui Science and Technology University, Fengyang, 233100, China
| | - Jianbo Zhu
- College of Life Sciences, Shihezi University, Shihezi, 832003, China
| | - Xianzhong Huang
- Center for Crop Biotechnology, College of Agriculture, Anhui Science and Technology University, Fengyang, 233100, China.
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18
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Nisa ZU, Wang Y, Ali N, Chen C, Zhang X, Jin X, Yu L, Jing L, Chen C, Elansary HO. Strigolactone signaling gene from soybean GmMAX2a enhances the drought and salt-alkaline resistance in Arabidopsis via regulating transcriptional profiles of stress-related genes. Funct Integr Genomics 2023; 23:216. [PMID: 37391642 DOI: 10.1007/s10142-023-01151-8] [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: 05/20/2023] [Revised: 06/14/2023] [Accepted: 06/21/2023] [Indexed: 07/02/2023]
Abstract
Strigolactone (SL) is a new plant hormone, which not only plays an important role in stimulating seed germination, plant branching, and regulating root development, but also plays an important role in the response of plants to abiotic stresses. In this study, the full-length cDNA of a soybean SL signal transduction gene (GmMAX2a) was isolated, cloned and revealed an important role in abiotic stress responses. Tissue-specific expression analysis by qRT-PCR indicated that GmMAX2a was expressed in all tissues of soybean, but highest expression was detected in seedling stems. Moreover, upregulation of GmMAX2a transcript expression under salt, alkali, and drought conditions were noted at different time points in soybean leaves compared to roots. Additionally, histochemical GUS staining studies revealed the deep staining in PGmMAX2a: GUS transgenic lines compared to WT indicating active involvement of GmMAX2a promoter region to stress responses. To further investigate the function of GmMAX2a gene in transgenic Arabidopsis, Petri-plate experiments were performed and GmMAX2a OX lines appeared with longer roots and improved fresh biomass compared to WT plants to NaCl, NaHCO3, and mannitol supplementation. Furthermore, the expression of several stress-related genes such as RD29B, SOS1, NXH1, AtRD22, KIN1, COR15A, RD29A, COR47, H+-APase, NADP-ME, NCED3, and P5CS were significantly high in GmMAX2a OX plants after stress treatment compared to WT plants. In conclusion, GmMAX2a improves soybean tolerance towards abiotic stresses (salt, alkali, and drought). Hence, GmMAX2a can be considered a candidate gene for transgenic breeding against various abiotic stresses in plants.
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Affiliation(s)
- Zaib-Un Nisa
- Institute of Molecular Biology and Biotechnology IMBB, The University of Lahore, Lahore, Pakistan.
| | - Yudan Wang
- Department of Chemistry and Molecular biology, School of Life Science and Technology, Harbin Normal University, Harbin, 150025, People's Republic of China
| | - Naila Ali
- Institute of Molecular Biology and Biotechnology IMBB, The University of Lahore, Lahore, Pakistan
| | - Chen Chen
- Department of Chemistry and Molecular biology, School of Life Science and Technology, Harbin Normal University, Harbin, 150025, People's Republic of China
| | - Xu Zhang
- Department of Chemistry and Molecular biology, School of Life Science and Technology, Harbin Normal University, Harbin, 150025, People's Republic of China
| | - Xiaoxia Jin
- Department of Chemistry and Molecular biology, School of Life Science and Technology, Harbin Normal University, Harbin, 150025, People's Republic of China
| | - Lijie Yu
- Department of Chemistry and Molecular biology, School of Life Science and Technology, Harbin Normal University, Harbin, 150025, People's Republic of China
| | - Legang Jing
- Department of Chemistry and Molecular biology, School of Life Science and Technology, Harbin Normal University, Harbin, 150025, People's Republic of China
| | - Chao Chen
- Department of Chemistry and Molecular biology, School of Life Science and Technology, Harbin Normal University, Harbin, 150025, People's Republic of China.
| | - Hosam O Elansary
- Department of Plant Production, College of Food & Agriculture Sciences, King Saud University, P.O. Box 2460, Riyadh, 11451, Saudi Arabia
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Li J, Fan M, Zhang Q, Lü G, Wu X, Gong B, Wang Y, Zhang Y, Gao H. Transcriptome analysis reveals that auxin promotes strigolactone-induced adventitious root growth in the hypocotyl of melon seedlings. FRONTIERS IN PLANT SCIENCE 2023; 14:1192340. [PMID: 37377810 PMCID: PMC10292653 DOI: 10.3389/fpls.2023.1192340] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/23/2023] [Accepted: 05/10/2023] [Indexed: 06/29/2023]
Abstract
Introduction Strigolactone (SL) and auxin are two important phytohormones involved in plant root development, but whether they show synergistic or mutual promotion effects during adventitious root (AR) formation has not been adequately explored. Methods In this study, we investigated the mechanisms of GR24 (synthetic SL) and indole-3-acetic acid (IAA; a type of auxin) in the formation of ARs using melon as the study material. Results Morphological measurements showed that the AR number, length, superficial area, and volume under the GR24 treatment were 1.60-3.27, 1.58-3.99, 2.06-3.42, and 3.00-6.11 times greater than those of the control group, respectively, at 6-10 days; the GR24+IAA treatment further promoted AR formation in melon seedlings, and the AR number, length, superficial area, and volume under the GR24+IAA treatment were 1.44-1.51, 1.28-1.73, 1.19-1.83, and 1.31-1.87 times greater than those obtained with the GR24 treatment, respectively. Transcriptome analysis revealed 2,742, 3,352, and 2,321 differentially expressed genes (DEGs) identified from the GR24 vs. control, GR24+IAA vs. control, and GR24+IAA vs. GR24 comparisons, respectively. The GR24 treatment and GR24+IAA treatment affected auxin and SL synthesis as well as components of the phytohormone signal transduction pathway, such as auxin, brassinosteroid (BR), ethylene (ETH), cytokinin (CK), gibberellin (GA), and abscisic acid (ABA). The concentrations of auxin, GA, zeatin (ZT), and ABA were evaluated using high-performance liquid chromatography (HPLC). From 6 to 10 days, the auxin, GA, and ZT contents in the GR24 treatment group were increased by 11.48%-15.34%, 11.83%-19.50%, and 22.52%-66.17%, respectively, compared to the control group, and these features were increased by 22.00%-31.20%, 21.29%-25.75%, 51.76%-98.96%, respectively, in the GR24+IAA treatment group compared with the control group. Compared to that in the control, the ABA content decreased by 10.30%-11.83% in the GR24 treatment group and decreased by 18.78%-24.00% in the GR24+IAA treatment group at 6-10 days. Discussion Our study revealed an interaction between strigolactone and auxin in the induction of AR formation in melon seedlings by affecting the expression of genes related to plant hormone pathways and contents.
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Affiliation(s)
- Jingrui Li
- College of Horticulture, Hebei Agricultural University, Baoding, China
- Collaborative Innovation Center of Vegetable Industry in Hebei, Baoding, China
- Hebei Key Laboratory of Vegetable Germplasm Innovation and Utilization, Baoding, China
| | - Mi Fan
- College of Horticulture, Hebei Agricultural University, Baoding, China
- Collaborative Innovation Center of Vegetable Industry in Hebei, Baoding, China
- Hebei Key Laboratory of Vegetable Germplasm Innovation and Utilization, Baoding, China
| | - Qinqin Zhang
- College of Horticulture, Hebei Agricultural University, Baoding, China
- Collaborative Innovation Center of Vegetable Industry in Hebei, Baoding, China
- Hebei Key Laboratory of Vegetable Germplasm Innovation and Utilization, Baoding, China
| | - Guiyun Lü
- College of Horticulture, Hebei Agricultural University, Baoding, China
- Collaborative Innovation Center of Vegetable Industry in Hebei, Baoding, China
- Hebei Key Laboratory of Vegetable Germplasm Innovation and Utilization, Baoding, China
| | - Xiaolei Wu
- College of Horticulture, Hebei Agricultural University, Baoding, China
- Collaborative Innovation Center of Vegetable Industry in Hebei, Baoding, China
- Hebei Key Laboratory of Vegetable Germplasm Innovation and Utilization, Baoding, China
| | - Binbin Gong
- College of Horticulture, Hebei Agricultural University, Baoding, China
- Collaborative Innovation Center of Vegetable Industry in Hebei, Baoding, China
- Hebei Key Laboratory of Vegetable Germplasm Innovation and Utilization, Baoding, China
| | - Yubo Wang
- College of Horticulture, Hebei Agricultural University, Baoding, China
- Collaborative Innovation Center of Vegetable Industry in Hebei, Baoding, China
- Hebei Key Laboratory of Vegetable Germplasm Innovation and Utilization, Baoding, China
| | - Ying Zhang
- College of Horticulture, Hebei Agricultural University, Baoding, China
- Collaborative Innovation Center of Vegetable Industry in Hebei, Baoding, China
- Hebei Key Laboratory of Vegetable Germplasm Innovation and Utilization, Baoding, China
| | - Hongbo Gao
- College of Horticulture, Hebei Agricultural University, Baoding, China
- Collaborative Innovation Center of Vegetable Industry in Hebei, Baoding, China
- Hebei Key Laboratory of Vegetable Germplasm Innovation and Utilization, Baoding, China
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20
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Rani V, Sengar RS, Garg SK, Mishra P, Shukla PK. RETRACTED ARTICLE: Physiological and Molecular Role of Strigolactones as Plant Growth Regulators: A Review. Mol Biotechnol 2023:10.1007/s12033-023-00694-2. [PMID: 36802323 DOI: 10.1007/s12033-023-00694-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Accepted: 02/09/2023] [Indexed: 02/23/2023]
Affiliation(s)
- Varsha Rani
- Sardar Vallabhbhai Patel University of Agriculture and Technology, Meerut, 250110, India.
| | - R S Sengar
- Sardar Vallabhbhai Patel University of Agriculture and Technology, Meerut, 250110, India.
| | - Sanjay Kumar Garg
- M. J. P. Rohilkhand University, Bareilly, Uttar Pradesh, 243006, India
| | - Pragati Mishra
- Sam Higginbottom University of Agriculture, Technology and Sciences, Allahabad, Uttar Pradesh, 211007, India
| | - Pradeep Kumar Shukla
- Sam Higginbottom University of Agriculture, Technology and Sciences, Allahabad, Uttar Pradesh, 211007, India
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21
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Abdelrahman M, Mostofa MG, Tran CD, El-Sayed M, Li W, Sulieman S, Tanaka M, Seki M, Tran LSP. The Karrikin Receptor Karrikin Insensitive2 Positively Regulates Heat Stress Tolerance in Arabidopsis thaliana. PLANT & CELL PHYSIOLOGY 2023; 63:1914-1926. [PMID: 35880749 DOI: 10.1093/pcp/pcac112] [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: 01/01/2022] [Revised: 06/23/2022] [Accepted: 07/25/2022] [Indexed: 06/15/2023]
Abstract
In this study, we investigated the potential role of the karrikin receptor KARRIKIN INSENSITIVE2 (KAI2) in the response of Arabidopsis seedlings to high-temperature stress. We performed phenotypic, physiological and transcriptome analyses of Arabidopsis kai2 mutants and wild-type (WT) plants under control (kai2_C and WT_C, respectively) and 6- and 24-h heat stress conditions (kai2_H6, kai2_H24, WT_H6 and WT_H24, respectively) to understand the basis for KAI2-regulated heat stress tolerance. We discovered that the kai2 mutants exhibited hypersensitivity to high-temperature stress relative to WT plants, which might be associated with a more highly increased leaf surface temperature and cell membrane damage in kai2 mutant plants. Next, we performed comparative transcriptome analysis of kai2_C, kai2_H6, kai2_H24, WT_C, WT_H6 and WT_H24 to identify transcriptome differences between WT and kai2 mutants in response to heat stress. K-mean clustering of normalized gene expression separated the investigated genotypes into three clusters based on heat-treated and non-treated control conditions. Within each cluster, the kai2 mutants were separated from WT plants, implying that kai2 mutants exhibited distinct transcriptome profiles relative to WT plants. Gene Ontology and Kyoto Encyclopedia of Genes and Genomes enrichment analyses showed a repression in 'misfolded protein binding', 'heat shock protein binding', 'unfolded protein binding' and 'protein processing in endoplasmic reticulum' pathways, which was consistent with the downregulation of several genes encoding heat shock proteins and heat shock transcription factors in the kai2 mutant versus WT plants under control and heat stress conditions. Our findings suggest that chemical or genetic manipulation of KAI2 signaling may provide a novel way to improve heat tolerance in plants.
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Affiliation(s)
- Mostafa Abdelrahman
- Faculty of Science, Galala University, Suez, El Sokhna 43511, Egypt
- Botany Department, Faculty of Science, Aswan University, Aswan 81528, Egypt
| | - Mohammad Golam Mostofa
- Department of Plant and Soil Science, Institute of Genomics for Crop Abiotic Stress Tolerance, Texas Tech University, Lubbock, TX 79409, USA
| | - Cuong Duy Tran
- Genetic Engineering Department, Agricultural Genetics Institute, Vietnamese Academy of Agricultural Science, Pham Van Dong Street, Hanoi 100000, Viet Nam
| | - Magdi El-Sayed
- Faculty of Science, Galala University, Suez, El Sokhna 43511, Egypt
| | - Weiqiang Li
- Jilin Da'an Agro-ecosystem National Observation Research Station, Changchun Jingyuetan Remote Sensing Experiment Station, Key Laboratory of Mollisols Agroecology, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, China
- State Key Laboratory of Cotton Biology, Henan Joint International Laboratory for Crop Multi-Omics Research, School of Life Sciences, Henan University, Kaifeng 475001, China
| | - Saad Sulieman
- Department of Agronomy, Faculty of Agriculture, University of Khartoum, Shambat, Khartoum North 13314, Sudan
| | - Maho Tanaka
- Plant Genomic Network Research Team, RIKEN Center for Sustainable Resource Science, Yokohama, 230-0045 Japan
- Plant Epigenome Regulation Laboratory, RIKEN Cluster for Pioneering Research, Saitama, 351-0198 Japan
| | - Motoaki Seki
- Plant Genomic Network Research Team, RIKEN Center for Sustainable Resource Science, Yokohama, 230-0045 Japan
- Plant Epigenome Regulation Laboratory, RIKEN Cluster for Pioneering Research, Saitama, 351-0198 Japan
- Kihara Institute for Biological Research, Yokohama City University, Yokohama, 244-0813 Japan
| | - 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
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22
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Singh Z, Singh H, Garg T, Mushahary KKK, Yadav SR. Genetic and Hormonal Blueprint of Shoot-Borne Adventitious Root Development in Rice and Maize. PLANT & CELL PHYSIOLOGY 2023; 63:1806-1813. [PMID: 35713294 DOI: 10.1093/pcp/pcac084] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/16/2022] [Revised: 05/05/2022] [Accepted: 06/14/2022] [Indexed: 06/15/2023]
Abstract
The evolution of root architecture in plants was a prerequisite for the absorption of water and minerals from the soil, and thus a major determinant of terrestrial plant colonization. Cereals have a remarkably complex root system consisting of embryonic primary roots and post-embryonic lateral roots and shoot-borne adventitious roots. Among grass species, rice adventitious roots (also called crown roots) are developed from compressed nodes at the stem base, whereas in maize, besides crown roots, several aboveground brace roots are also formed, thus adventitious root types display species-specific diversity. Despite being the backbone for the adult root system in monocots, adventitious roots are the least studied of all the plant organs. In recent times, molecular genetics, genomics and proteomics-based approaches have been utilized to dissect the mechanism of post-embryonic meristem formation and tissue patterning. Adventitious root development is a cumulative effect of the actions and interactions of crucial genetic and hormonal regulators. In this review, we provide a comprehensive view of the key regulators involved during the different stages of adventitious root development in two important crop plants, rice and maize. We have reviewed the roles of major phytohormones, microRNAs and transcription factors and their crosstalk during adventitious root development in these cereal crops.
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Affiliation(s)
- Zeenu Singh
- Department of Biosciences and Bioengineering, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand 247667, India
| | - Harshita Singh
- Department of Biosciences and Bioengineering, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand 247667, India
| | - Tushar Garg
- Department of Biosciences and Bioengineering, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand 247667, India
| | | | - Shri Ram Yadav
- Department of Biosciences and Bioengineering, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand 247667, India
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23
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Altamura MM, Piacentini D, Della Rovere F, Fattorini L, Falasca G, Betti C. New Paradigms in Brassinosteroids, Strigolactones, Sphingolipids, and Nitric Oxide Interaction in the Control of Lateral and Adventitious Root Formation. PLANTS (BASEL, SWITZERLAND) 2023; 12:plants12020413. [PMID: 36679126 PMCID: PMC9864901 DOI: 10.3390/plants12020413] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2022] [Revised: 01/09/2023] [Accepted: 01/11/2023] [Indexed: 05/05/2023]
Abstract
The root system is formed by the primary root (PR), which forms lateral roots (LRs) and, in some cases, adventitious roots (ARs), which in turn may produce their own LRs. The formation of ARs is also essential for vegetative propagation in planta and in vitro and for breeding programs. Root formation and branching is coordinated by a complex developmental network, which maximizes the plant's ability to cope with abiotic stress. Rooting is also a response caused in a cutting by wounding and disconnection from the donor plant. Brassinosteroids (BRs) are steroid molecules perceived at the cell surface. They act as plant-growth-regulators (PGRs) and modulate plant development to provide stress tolerance. BRs and auxins control the formation of LRs and ARs. The auxin/BR interaction involves other PGRs and compounds, such as nitric oxide (NO), strigolactones (SLs), and sphingolipids (SPLs). The roles of these interactions in root formation and plasticity are still to be discovered. SLs are carotenoid derived PGRs. SLs enhance/reduce LR/AR formation depending on species and culture conditions. These PGRs possibly crosstalk with BRs. SPLs form domains with sterols within cellular membranes. Both SLs and SPLs participate in plant development and stress responses. SPLs are determinant for auxin cell-trafficking, which is essential for the formation of LRs/ARs in planta and in in vitro systems. Although little is known about the transport, trafficking, and signaling of SPLs, they seem to interact with BRs and SLs in regulating root-system growth. Here, we review the literature on BRs as modulators of LR and AR formation, as well as their crosstalk with SLs and SPLs through NO signaling. Knowledge on the control of rooting by these non-classical PGRs can help in improving crop productivity and enhancing AR-response from cuttings.
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Affiliation(s)
- Maria Maddalena Altamura
- Department of Environmental Biology, Sapienza University of Rome, 00185 Rome, Italy
- Correspondence:
| | - Diego Piacentini
- Department of Environmental Biology, Sapienza University of Rome, 00185 Rome, Italy
| | | | - Laura Fattorini
- Department of Environmental Biology, Sapienza University of Rome, 00185 Rome, Italy
| | - Giuseppina Falasca
- Department of Environmental Biology, Sapienza University of Rome, 00185 Rome, Italy
| | - Camilla Betti
- Department of Biosciences, University of Milan, 20133 Milan, Italy
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24
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Faizan M, Cheng SH, Tonny SH, Robab MI. Specific roles of strigolactones in plant physiology and remediation of heavy metals from contaminated soil. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2022; 192:186-195. [PMID: 36244191 DOI: 10.1016/j.plaphy.2022.10.004] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/26/2022] [Revised: 09/06/2022] [Accepted: 10/04/2022] [Indexed: 06/16/2023]
Abstract
Strigolactones (SLs) have been implicated in various developmental processes of the plant, including the response against several abiotic stresses. It is well known as a class of endogenous phytohormones that regulates shoot branching, secondary growth and root morphology. This hormone facilitates plants in responding to nitrogen and phosphorus starvation by shaping the above and below ground structural design. SLs actively participate within regulatory networks of plant stress adaptation that are governed by phytohormones. Heavy metals (HMs) in soil are considered a serious environmental problem that causes various harmful effects on plants. SLs along with other plant hormones imply the role in plant architecture is far from being fully understood. Strategy to remove/remediation of HMs from the soil with the help of SLs has not been defined yet. Therefore, the present review aims to comprehensively provide an overview of SLs role in fine-tuning plant architectures, relation with other plant hormones under abiotic stress, and remediation of HMs contaminated soil using SLs.
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Affiliation(s)
- Mohammad Faizan
- Botany Section, School of Sciences, Maulana Azad National Urdu University, Hyderabad, 500032, India.
| | - Shi Hui Cheng
- School of Biosciences, University of Nottingham, Jalan Broga, 43500, Semenyih, Selangor Darul Ehsan, Malaysia
| | - Sadia Haque Tonny
- Faculty of Agriculture, Bangladesh Agriculture University, Mymensingh, 2202, Bangladesh
| | - Merajul Islam Robab
- Botany Section, School of Sciences, Maulana Azad National Urdu University, Hyderabad, 500032, India
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25
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Fan X, Li H, Guo Y, Sun H, Wang S, Qi Q, Jiang X, Wang Y, Xu X, Qiu C, Li W, Han Z. Integrated multi-omics analysis uncovers roles of mdm-miR164b-MdORE1 in strigolactone-mediated inhibition of adventitious root formation in apple. PLANT, CELL & ENVIRONMENT 2022; 45:3582-3603. [PMID: 36000454 DOI: 10.1111/pce.14422] [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: 01/13/2022] [Revised: 03/01/2022] [Accepted: 03/22/2022] [Indexed: 06/15/2023]
Abstract
Apple is one of the most important fruit crops in temperate regions and largely relies on cutting propagation. Adventitious root formation is crucial for the success of cutting propagation. Strigolactones have been reported to function in rooting of woody plants. In this study, we determined that strigolactones have inhibitory effects on adventitious root formation in apple. Transcriptome analysis identified 12 051 differentially expressed genes over the course of adventitious root initiation, with functions related to organogenesis, cell wall biogenesis or plant development. Further analysis indicated that strigolactones might inhibit adventitious root formation through repressing two core hub genes, MdLAC3 and MdORE1. Combining small RNA and degradome sequencing, as well as dual-luciferase sensor assays, we identified and validated three negatively correlated miRNA-mRNA pairs, including mdm-miR397-MdLAC3 and mdm-miR164a/b-MdORE1. Overexpression of mdm-miR164b and silencing MdORE1 exhibited enhanced adventitious root formation in tobacco and apple, respectively. Finally, we verified the role of mdm-miR164b-MdORE1 in strigolactone-mediated repression of rooting ability. Overall, the identified comprehensive regulatory network in apple not only provides insight into strigolactone-mediated adventitious root formation in other woody plants, but also points to a potential strategy for genetic improvement of rooting capacity in woody plants.
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Affiliation(s)
- Xingqiang Fan
- State Key Laboratory of Agrobiotechnology, College of Horticulture, China Agricultural University, Beijing, China
| | - Hui Li
- State Key Laboratory of Agrobiotechnology, College of Horticulture, China Agricultural University, Beijing, China
| | - Yushuang Guo
- State Key Laboratory of Agrobiotechnology, College of Horticulture, China Agricultural University, Beijing, China
| | - Haochen Sun
- State Key Laboratory of Agrobiotechnology, College of Horticulture, China Agricultural University, Beijing, China
| | - Shiyao Wang
- State Key Laboratory of Agrobiotechnology, College of Horticulture, China Agricultural University, Beijing, China
| | - Qi Qi
- State Key Laboratory of Agrobiotechnology, College of Horticulture, China Agricultural University, Beijing, China
- National Engineering Laboratory for Tree Breeding, College of Life Sciences and Biotechnology, Beijing Forestry University, Beijing, China
| | - Xiangning Jiang
- National Engineering Laboratory for Tree Breeding, College of Life Sciences and Biotechnology, Beijing Forestry University, Beijing, China
| | - Yi Wang
- State Key Laboratory of Agrobiotechnology, College of Horticulture, China Agricultural University, Beijing, China
| | - Xuefeng Xu
- State Key Laboratory of Agrobiotechnology, College of Horticulture, China Agricultural University, Beijing, China
| | - Changpeng Qiu
- State Key Laboratory of Agrobiotechnology, College of Horticulture, China Agricultural University, Beijing, China
| | - Wei Li
- State Key Laboratory of Agrobiotechnology, College of Horticulture, China Agricultural University, Beijing, China
| | - Zhenhai Han
- State Key Laboratory of Agrobiotechnology, College of Horticulture, China Agricultural University, Beijing, China
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26
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Gulyás Z, Moncsek B, Hamow KÁ, Stráner P, Tolnai Z, Badics E, Incze N, Darkó É, Nagy V, Perczel A, Kovács L, Soós V. D27-LIKE1 isomerase has a preference towards trans/cis and cis/cis conversions of carotenoids in Arabidopsis. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2022; 112:1377-1395. [PMID: 36308414 DOI: 10.1111/tpj.16017] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/07/2022] [Revised: 10/20/2022] [Accepted: 10/25/2022] [Indexed: 06/16/2023]
Abstract
Carotenoids contribute to a variety of physiological processes in plants, functioning also as biosynthesis precursors of ABA and strigolactones (SLs). SL biosynthesis starts with the enzymatic conversion of all-trans-β-carotene to 9-cis-β-carotene by the DWARF27 (D27) isomerase. In Arabidopsis, D27 has two closely related paralogs, D27-LIKE1 and D27-LIKE2, which were predicted to be β-carotene-isomerases. In the present study, we characterised D27-LIKE1 and identified some key aspects of its physiological and enzymatic functions in Arabidopsis. d27-like1-1 mutant does not display any strigolactone-deficient traits and exhibits a substantially higher 9-cis-violaxanthin content, which is accompanied by a slightly higher ABA level. In vitro feeding assays with recombinant D27-LIKE1 revealed that the protein exhibits affinity to all β-carotene isoforms but with an exclusive preference towards trans/cis conversions and the interconversion between 9-cis, 13-cis and 15-cis-β-carotene forms, and accepts zeaxanthin and violaxanthin as substrates. Finally, we present evidence showing that D27-LIKE1 mRNA is phloem mobile and D27-LIKE1 is an ancient isomerase with a long evolutionary history. In summary, we demonstrate that D27-LIKE1 is a carotenoid isomerase with multi-substrate specificity and has a characteristic preference towards the catalysation of cis/cis interconversion of carotenoids. Therefore, D27-LIKE1 is a potential regulator of carotenoid cis pools and, eventually, SL and ABA biosynthesis pathways.
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Affiliation(s)
- Zsolt Gulyás
- Agricultural Institute, Centre for Agricultural Research, ELKH, Brunszvik u. 2, Martonvásár, 2462, Hungary
| | - Blanka Moncsek
- Agricultural Institute, Centre for Agricultural Research, ELKH, Brunszvik u. 2, Martonvásár, 2462, Hungary
- Doctoral School of Biology, Institute of Biology, ELTE Eötvös Loránd University, Pázmány Péter s. 1/A, Budapest, 1117, Hungary
| | - Kamirán Áron Hamow
- Agricultural Institute, Centre for Agricultural Research, ELKH, Brunszvik u. 2, Martonvásár, 2462, Hungary
| | - Pál Stráner
- Laboratory of Structural Chemistry and Biology, MTA-ELTE Protein Modelling Research Group, Institute of Chemistry, Eötvös Loránd University, Pázmány Péter s. 1/A, Budapest, 1117, Hungary
| | - Zoltán Tolnai
- Agricultural Institute, Centre for Agricultural Research, ELKH, Brunszvik u. 2, Martonvásár, 2462, Hungary
| | - Eszter Badics
- Agricultural Institute, Centre for Agricultural Research, ELKH, Brunszvik u. 2, Martonvásár, 2462, Hungary
- Doctoral School of Biology, Institute of Biology, ELTE Eötvös Loránd University, Pázmány Péter s. 1/A, Budapest, 1117, Hungary
| | - Norbert Incze
- Agricultural Institute, Centre for Agricultural Research, ELKH, Brunszvik u. 2, Martonvásár, 2462, Hungary
- Doctoral School of Biology, Institute of Biology, ELTE Eötvös Loránd University, Pázmány Péter s. 1/A, Budapest, 1117, Hungary
| | - Éva Darkó
- Agricultural Institute, Centre for Agricultural Research, ELKH, Brunszvik u. 2, Martonvásár, 2462, Hungary
| | - Valéria Nagy
- Biological Research Centre, ELKH, 6726, Szeged, Temesvári krt. 62, Hungary
| | - András Perczel
- Laboratory of Structural Chemistry and Biology, MTA-ELTE Protein Modelling Research Group, Institute of Chemistry, Eötvös Loránd University, Pázmány Péter s. 1/A, Budapest, 1117, Hungary
| | - László Kovács
- Biological Research Centre, ELKH, 6726, Szeged, Temesvári krt. 62, Hungary
| | - Vilmos Soós
- Agricultural Institute, Centre for Agricultural Research, ELKH, Brunszvik u. 2, Martonvásár, 2462, Hungary
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Tian Z, Zhang Y, Zhu L, Jiang B, Wang H, Gao R, Friml J, Xiao G. Strigolactones act downstream of gibberellins to regulate fiber cell elongation and cell wall thickness in cotton (Gossypium hirsutum). THE PLANT CELL 2022; 34:4816-4839. [PMID: 36040191 PMCID: PMC9709996 DOI: 10.1093/plcell/koac270] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/20/2022] [Accepted: 08/25/2022] [Indexed: 05/21/2023]
Abstract
Strigolactones (SLs) are a class of phytohormones that regulate plant shoot branching and adventitious root development. However, little is known regarding the role of SLs in controlling the behavior of the smallest unit of the organism, the single cell. Here, taking advantage of a classic single-cell model offered by the cotton (Gossypium hirsutum) fiber cell, we show that SLs, whose biosynthesis is fine-tuned by gibberellins (GAs), positively regulate cell elongation and cell wall thickness by promoting the biosynthesis of very long-chain fatty acids (VLCFAs) and cellulose, respectively. Furthermore, we identified two layers of transcription factors (TFs) involved in the hierarchical regulation of this GA-SL crosstalk. The top-layer TF GROWTH-REGULATING FACTOR 4 (GhGRF4) directly activates expression of the SL biosynthetic gene DWARF27 (D27) to increase SL accumulation in fiber cells and GAs induce GhGRF4 expression. SLs induce the expression of four second-layer TF genes (GhNAC100-2, GhBLH51, GhGT2, and GhB9SHZ1), which transmit SL signals downstream to two ketoacyl-CoA synthase genes (KCS) and three cellulose synthase (CesA) genes by directly activating their transcription. Finally, the KCS and CesA enzymes catalyze the biosynthesis of VLCFAs and cellulose, respectively, to regulate development of high-grade cotton fibers. In addition to providing a theoretical basis for cotton fiber improvement, our results shed light on SL signaling in plant development at the single-cell level.
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Affiliation(s)
| | | | - Liping Zhu
- College of Life Sciences, Shaanxi Normal University, Xi’an,
China
| | - Bin Jiang
- College of Life Sciences, Shaanxi Normal University, Xi’an,
China
| | - Huiqin Wang
- College of Life Sciences, Shaanxi Normal University, Xi’an,
China
| | - Ruxi Gao
- College of Life Sciences, Northwest A&F University,
Shaanxi, Yangling, China
| | - Jiří Friml
- Institute of Science and Technology Austria, 3400
Klosterneuburg, Austria
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28
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Cantabella D, Karpinska B, Teixidó N, Dolcet-Sanjuan R, Foyer CH. Non-volatile signals and redox mechanisms are required for the responses of Arabidopsis roots to Pseudomonas oryzihabitans. JOURNAL OF EXPERIMENTAL BOTANY 2022; 73:6971-6982. [PMID: 36001048 DOI: 10.1093/jxb/erac346] [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: 05/06/2022] [Accepted: 08/23/2022] [Indexed: 06/15/2023]
Abstract
Soil bacteria promote plant growth and protect against environmental stresses, but the mechanisms involved remain poorly characterized, particularly when there is no direct contact between the roots and bacteria. Here, we explored the effects of Pseudomonas oryzihabitans PGP01 on the root system architecture (RSA) in Arabidopsis thaliana seedlings. Significant increases in lateral root (LR) density were observed when seedlings were grown in the presence of P. oryzihabitans, as well as an increased abundance of transcripts associated with altered nutrient transport and phytohormone responses. However, no bacterial transcripts were detected on the root samples by RNAseq analysis, demonstrating that the bacteria do not colonize the roots. Separating the agar containing bacteria from the seedlings prevented the bacteria-induced changes in RSA. Bacteria-induced changes in RSA were absent from mutants defective in ethylene response factor (ERF109), glutathione synthesis (pad2-1, cad2-1, and rax1-1) and in strigolactone synthesis (max3-9 and max4-1) or signalling (max2-3). However, the P. oryzihabitans-induced changes in RSA were similar in the low ascorbate mutants (vtc2-1and vtc2-2) to the wild-type controls. Taken together, these results demonstrate the importance of non-volatile signals and redox mechanisms in the root architecture regulation that occurs following long-distance perception of P. oryzihabitans.
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Affiliation(s)
- Daniel Cantabella
- Institute of Research and Agrofood technology (IRTA) Postharvest Program, Edifici Fruitcentre, Parc Científic i Tecnològic Agroalimentari de Lleida, 25003 Lleida, Catalonia, Spain
- IRTA, Plant In Vitro Culture Laboratory, Fruticulture Program, Barcelona, Spain
- School of Biosciences, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK
| | - Barbara Karpinska
- School of Biosciences, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK
| | - Neus Teixidó
- Institute of Research and Agrofood technology (IRTA) Postharvest Program, Edifici Fruitcentre, Parc Científic i Tecnològic Agroalimentari de Lleida, 25003 Lleida, Catalonia, Spain
| | | | - Christine H Foyer
- School of Biosciences, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK
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29
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Ke D, Guo J, Li K, Wang Y, Han X, Fu W, Miao Y, Jia KP. Carotenoid-derived bioactive metabolites shape plant root architecture to adapt to the rhizospheric environments. FRONTIERS IN PLANT SCIENCE 2022; 13:986414. [PMID: 36388571 PMCID: PMC9643742 DOI: 10.3389/fpls.2022.986414] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/05/2022] [Accepted: 10/14/2022] [Indexed: 06/16/2023]
Abstract
Roots are important plant organs for the uptake of water and nutrient elements. Plant root development is finely regulated by endogenous signals and environmental cues, which shapes the root system architecture to optimize the plant growth and adapt to the rhizospheric environments. Carotenoids are precursors of plant hormones strigolactones (SLs) and ABA, as well as multiple bioactive molecules. Numerous studies have demonstrated SLs and ABA as essential regulators of plant root growth and development. In addition, a lot carotenoid-derived bioactive metabolites are recently identified as plant root growth regulators, such as anchorene, β-cyclocitral, retinal and zaxinone. However, our knowledge on how these metabolites affect the root architecture to cope with various stressors and how they interact with each other during these processes is still quite limited. In the present review, we will briefly introduce the biosynthesis of carotenoid-derived root regulators and elaborate their biological functions on root development and architecture, focusing on their contribution to the rhizospheric environmental adaption of plants.
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Affiliation(s)
- Danping Ke
- State Key Laboratory of Cotton Biology, Henan Joint International Laboratory for Crop Multi-Omics Research, School of Life Sciences, Henan University, Kaifeng, China
| | - Jinggong Guo
- State Key Laboratory of Cotton Biology, Henan Joint International Laboratory for Crop Multi-Omics Research, School of Life Sciences, Henan University, Kaifeng, China
- Sanya Institute of Henan University, Sanya, Hainan, China
- Academy for Advanced Interdisciplinary Studies, Henan University, Kaifeng, China
| | - Kun Li
- State Key Laboratory of Cotton Biology, Henan Joint International Laboratory for Crop Multi-Omics Research, School of Life Sciences, Henan University, Kaifeng, China
- Sanya Institute of Henan University, Sanya, Hainan, China
- Academy for Advanced Interdisciplinary Studies, Henan University, Kaifeng, China
| | - Yujie Wang
- State Key Laboratory of Cotton Biology, Henan Joint International Laboratory for Crop Multi-Omics Research, School of Life Sciences, Henan University, Kaifeng, China
| | - Xiaomeng Han
- State Key Laboratory of Cotton Biology, Henan Joint International Laboratory for Crop Multi-Omics Research, School of Life Sciences, Henan University, Kaifeng, China
| | - Weiwei Fu
- State Key Laboratory of Cotton Biology, Henan Joint International Laboratory for Crop Multi-Omics Research, School of Life Sciences, Henan University, Kaifeng, China
| | - Yuchen Miao
- State Key Laboratory of Cotton Biology, Henan Joint International Laboratory for Crop Multi-Omics Research, School of Life Sciences, Henan University, Kaifeng, China
- Sanya Institute of Henan University, Sanya, Hainan, China
- Academy for Advanced Interdisciplinary Studies, Henan University, Kaifeng, China
| | - Kun-Peng Jia
- State Key Laboratory of Cotton Biology, Henan Joint International Laboratory for Crop Multi-Omics Research, School of Life Sciences, Henan University, Kaifeng, China
- Sanya Institute of Henan University, Sanya, Hainan, China
- Academy for Advanced Interdisciplinary Studies, Henan University, Kaifeng, China
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30
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Temmerman A, Marquez-Garcia B, Depuydt S, Bruznican S, De Cuyper C, De Keyser A, Boyer FD, Vereecke D, Struk S, Goormachtig S. MAX2-dependent competence for callus formation and shoot regeneration from Arabidopsis thaliana root explants. JOURNAL OF EXPERIMENTAL BOTANY 2022; 73:6272-6291. [PMID: 35738874 DOI: 10.1093/jxb/erac281] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/28/2022] [Accepted: 06/23/2022] [Indexed: 05/21/2023]
Abstract
Although the division of the pericycle cells initiates both lateral root development and root-derived callus formation, these developmental processes are affected differently in the strigolactone and karrikin/KARRIKIN INSENSITIVE 2 (KAI2) ligand signalling mutant more axillary growth 2 (max2). Whereas max2 produces more lateral roots than the wild type, it is defective in the regeneration of shoots from root explants. We suggest that the decreased shoot regeneration of max2 originates from delayed formation of callus primordium, yielding less callus material to regenerate shoots. Indeed, when incubated on callus-inducing medium, the pericycle cell division was reduced in max2 and the early gene expression varied when compared with the wild type, as determined by a transcriptomics analysis. Furthermore, the expression of the LATERAL ORGAN BOUNDARIES DOMAIN genes and of callus-induction genes was modified in correlation with the max2 phenotype, suggesting a role for MAX2 in the regulation of the interplay between cytokinin, auxin, and light signalling in callus initiation. Additionally, we found that the in vitro shoot regeneration phenotype of max2 might be caused by a defect in KAI2, rather than in DWARF14, signalling. Nevertheless, the shoot regeneration assays revealed that the strigolactone biosynthesis mutants max3 and max4 also play a minor role.
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Affiliation(s)
- Arne Temmerman
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Technologiepark, Ghent, Belgium
- Center for Plant Systems Biology, VIB, Technologiepark, Ghent, Belgium
| | - Belen Marquez-Garcia
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Technologiepark, Ghent, Belgium
- Center for Plant Systems Biology, VIB, Technologiepark, Ghent, Belgium
| | - Stephen Depuydt
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Technologiepark, Ghent, Belgium
- Center for Plant Systems Biology, VIB, Technologiepark, Ghent, Belgium
- Laboratory of Plant Growth Analysis, Ghent University Global Campus, Songdomunhwa-Ro, Yeonsu-Gu, Incheon, Korea
| | - Silvia Bruznican
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Technologiepark, Ghent, Belgium
- Center for Plant Systems Biology, VIB, Technologiepark, Ghent, Belgium
| | - Carolien De Cuyper
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Technologiepark, Ghent, Belgium
- Center for Plant Systems Biology, VIB, Technologiepark, Ghent, Belgium
| | - Annick De Keyser
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Technologiepark, Ghent, Belgium
- Center for Plant Systems Biology, VIB, Technologiepark, Ghent, Belgium
| | - François-Didier Boyer
- Institut de Chimie des Substances Naturelles, Centre National de la Recherche Scientifique, Université Paris-Sud, Université Paris-Saclay, Avenue de la Terrasse, Gif-sur-Yvette, France
| | - Danny Vereecke
- Department of Plants and Crops, Faculty of Bioscience Engineering, Ghent University, Valentin Vaerwyckweg, Ghent, Belgium
| | - Sylwia Struk
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Technologiepark, Ghent, Belgium
- Center for Plant Systems Biology, VIB, Technologiepark, Ghent, Belgium
| | - Sofie Goormachtig
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Technologiepark, Ghent, Belgium
- Center for Plant Systems Biology, VIB, Technologiepark, Ghent, Belgium
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31
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Lastochkina O, Aliniaeifard S, SeifiKalhor M, Bosacchi M, Maslennikova D, Lubyanova A. Novel Approaches for Sustainable Horticultural Crop Production: Advances and Prospects. HORTICULTURAE 2022; 8:910. [DOI: 10.3390/horticulturae8100910] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/23/2023]
Abstract
Reduction of plant growth, yield and quality due to diverse environmental constrains along with climate change significantly limit the sustainable production of horticultural crops. In this review, we highlight the prospective impacts that are positive challenges for the application of beneficial microbial endophytes, nanomaterials (NMs), exogenous phytohormones strigolactones (SLs) and new breeding techniques (CRISPR), as well as controlled environment horticulture (CEH) using artificial light in sustainable production of horticultural crops. The benefits of such applications are often evaluated by measuring their impact on the metabolic, morphological and biochemical parameters of a variety of cultures, which typically results in higher yields with efficient use of resources when applied in greenhouse or field conditions. Endophytic microbes that promote plant growth play a key role in the adapting of plants to habitat, thereby improving their yield and prolonging their protection from biotic and abiotic stresses. Focusing on quality control, we considered the effects of the applications of microbial endophytes, a novel class of phytohormones SLs, as well as NMs and CEH using artificial light on horticultural commodities. In addition, the genomic editing of plants using CRISPR, including its role in modulating gene expression/transcription factors in improving crop production and tolerance, was also reviewed.
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32
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Alvi AF, Sehar Z, Fatma M, Masood A, Khan NA. Strigolactone: An Emerging Growth Regulator for Developing Resilience in Plants. PLANTS (BASEL, SWITZERLAND) 2022; 11:plants11192604. [PMID: 36235470 PMCID: PMC9571818 DOI: 10.3390/plants11192604] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/2022] [Revised: 09/27/2022] [Accepted: 09/29/2022] [Indexed: 05/21/2023]
Abstract
Improving plant resilience to changing environmental conditions is the primary focus of today's scientific research globally. It is essential to find various strategies for the better survival of plants with higher resistance potential to climate change. Strigolactones (SLs) are multifunctional β-carotene derivative molecules that determine a range of plant growth and development aspects, such as root architecture, shoot branching, chlorophyll synthesis, and senescence. SLs facilitate strong defense responses against drought, salinity, heavy metal, nutrient starvation, and heat stress. The SLs trigger other hormonal-responsive pathways and determine plant resilience against stressful environments. This review focuses on the mechanisms regulated by SLs and interaction with other plant hormones to regulate plant developmental processes and SLs' influence on the mitigation of plant damage under abiotic stresses. A better understanding of the signaling and perception of SLs may lead to the path for the sustainability of plants in the changing environmental scenario. The SLs may be considered as an opening door toward sustainable agriculture.
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33
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Zhang X, Fang T, Huang Y, Sun W, Cai S. Transcriptional regulation of photomorphogenesis in seedlings of Brassica napus under different light qualities. PLANTA 2022; 256:77. [PMID: 36088613 DOI: 10.1007/s00425-022-03991-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2022] [Accepted: 09/02/2022] [Indexed: 06/15/2023]
Abstract
This study displayed the transcriptional regulation network of key regulators and downstream pathway in seedling morphogenesis of Brassica napus under different light quality. Plants undergo photomorphogenesis upon the presence of light, mediated by different light (e.g., blue, red, and far-red) signaling pathways. Although the light signaling pathway has been well documented in Arabidopsis, the underlying mechanisms were studied to a less extent in other plant species including Brassica napus. In this study, we investigated the effect of different light qualities (white, blue, red, and far-red light) on the hypocotyl elongation in B. napus, and performed the transcriptomic analysis of seedlings in response to different light qualities. The results showed that hypocotyl elongation was slightly inhibited by red light, while it was strongly inhibited by blue/far-red light. Transcriptome analysis identified 9748 differentially expressed genes (DEGs) among treatments. Gene ontology (GO) enrichment analysis of DEGs showed that light-responsive and photosynthesis-related genes were highly expressed in response to blue/far-red light rather than in red light. Furthermore, the key genes in light signaling (i.e., PHYB, HY5, HYH, HFR1, and PIF3) exhibited distinct expression patterns between blue/far-red and red light treatments. In addition, subgenome dominant expression of homoeologous genes were observed for some genes, such as PHYA, PHYB, HFR1, and BBXs. The current study displayed a comprehensive dissection of light-mediated transcriptional regulation network, including light signaling, phytohormone, and cell elongation/modification, which improved the understanding on the underlying mechanism of light-regulated hypocotyl growth in B. napus.
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Affiliation(s)
- Xin Zhang
- Institute of Crop Science, Zhejiang University, Hangzhou, 310058, China
| | - Tianmeng Fang
- Institute of Crop Science, Zhejiang University, Hangzhou, 310058, China
| | - Yuqing Huang
- Institute of Crop Science, Hangzhou Academy of Agricultural Sciences, Hangzhou, 310024, China
| | - Wenyue Sun
- Institute of Crop Science, Zhejiang University, Hangzhou, 310058, China
| | - Shengguan Cai
- Institute of Crop Science, Zhejiang University, Hangzhou, 310058, China.
- Shandong (Linyi) Institute of Modern Agriculture, Zhejiang University, Linyi, 276000, China.
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34
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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: 7] [Impact Index Per Article: 3.5] [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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35
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Nayak JJ, Anwar S, Krishna P, Chen ZH, Plett JM, Foo E, Cazzonelli CI. Tangerine tomato roots show increased accumulation of acyclic carotenoids, less abscisic acid, drought sensitivity, and impaired endomycorrhizal colonization. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2022; 321:111308. [PMID: 35696908 DOI: 10.1016/j.plantsci.2022.111308] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2022] [Revised: 04/13/2022] [Accepted: 04/29/2022] [Indexed: 06/15/2023]
Abstract
The Heirloom Golden tangerine tomato fruit variety is highly nutritious due to accumulation of tetra-cis-lycopene, that has a higher bioavailability and recognised health benefits in treating anti-inflammatory diseases compared to all-trans-lycopene isomers found in red tomatoes. We investigated if photoisomerization of tetra-cis-lycopene occurs in roots of the MicroTom tangerine (tangmic) tomato and how this affects root to shoot biomass, mycorrhizal colonization, abscisic acid accumulation, and responses to drought. tangmic plants grown in soil under glasshouse conditions displayed a reduction in height, number of flowers, fruit yield, and root length compared to wild-type (WT). Soil inoculation with Rhizophagus irregularis revealed fewer arbuscules and other fungal structures in the endodermal cells of roots in tangmic relative to WT. The roots of tangmic hyperaccumulated acyclic cis-carotenes, while only trace levels of xanthophylls and abscisic acid were detected. In response to a water deficit, leaves from the tangmic plants displayed a rapid decline in maximum quantum yield of photosystem II compared to WT, indicating a defective root to shoot signalling response to drought. The lack of xanthophylls biosynthesis in tangmic roots reduced abscisic acid levels, thereby likely impairing endomycorrhizal colonisation and drought-induced root to shoot signalling.
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Affiliation(s)
- Jwalit J Nayak
- Hawkesbury Institute for the Environment, Western Sydney University, Locked Bag 1797, Penrith, NSW 2751, Australia
| | - Sidra Anwar
- Hawkesbury Institute for the Environment, Western Sydney University, Locked Bag 1797, Penrith, NSW 2751, Australia
| | - Priti Krishna
- School of Science, Western Sydney University, Locked Bag 1797, Penrith, NSW 2751, Australia
| | - Zhong-Hua Chen
- Hawkesbury Institute for the Environment, Western Sydney University, Locked Bag 1797, Penrith, NSW 2751, Australia; School of Science, Western Sydney University, Locked Bag 1797, Penrith, NSW 2751, Australia
| | - Jonathan M Plett
- Hawkesbury Institute for the Environment, Western Sydney University, Locked Bag 1797, Penrith, NSW 2751, Australia
| | - Eloise Foo
- School of Natural Sciences, University of Tasmania, Private Bag 55, Hobart, TAS, 7001, Australia
| | - Christopher I Cazzonelli
- Hawkesbury Institute for the Environment, Western Sydney University, Locked Bag 1797, Penrith, NSW 2751, Australia.
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36
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Hamon‐Josse M, Villaécija‐Aguilar JA, Ljung K, Leyser O, Gutjahr C, Bennett T. KAI2 regulates seedling development by mediating light-induced remodelling of auxin transport. THE NEW PHYTOLOGIST 2022; 235:126-140. [PMID: 35313031 PMCID: PMC9320994 DOI: 10.1111/nph.18110] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Accepted: 03/05/2022] [Indexed: 05/13/2023]
Abstract
Photomorphogenic remodelling of seedling growth is a key developmental transition in the plant life cycle. The α/β-hydrolase signalling protein KARRIKIN-INSENSITIVE2 (KAI2), a close homologue of the strigolactone receptor DWARF14 (D14), is involved in this process, but it is unclear how the effects of KAI2 on development are mediated. Here, using a combination of physiological, pharmacological, genetic and imaging approaches in Arabidopsis thaliana (Heynh.) we show that kai2 phenotypes arise because of a failure to downregulate auxin transport from the seedling shoot apex towards the root system, rather than a failure to respond to light per se. We demonstrate that KAI2 controls the light-induced remodelling of the PIN-mediated auxin transport system in seedlings, promoting a reduction in PIN7 abundance in older tissues, and an increase of PIN1/PIN2 abundance in the root meristem. We show that removing PIN3, PIN4 and PIN7 from kai2 mutants, or pharmacological inhibition of auxin transport and synthesis, is sufficient to suppress most kai2 seedling phenotypes. We conclude that KAI2 regulates seedling morphogenesis by its effects on the auxin transport system. We propose that KAI2 is not required for the light-mediated changes in PIN gene expression but is required for the appropriate changes in PIN protein abundance within cells.
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Affiliation(s)
- Maxime Hamon‐Josse
- School of BiologyFaculty of Biological SciencesUniversity of LeedsLeedsLS2 9JTUK
| | | | - Karin Ljung
- Department of Forest Genetics and Plant PhysiologyUmeå Plant Science CentreSwedish University of Agricultural SciencesSE‐901 83UmeåSweden
| | - Ottoline Leyser
- Sainsbury Laboratory Cambridge UniversityBateman StreetCambridgeCB2 1LRUK
| | - Caroline Gutjahr
- Plant GeneticsTUM School of Life SciencesTechnical University of Munich (TUM)Emil Ramann Str. 485354FreisingGermany
- GeneticsFaculty of BiologyLMU MunichGrosshaderner St. 482152MartinsriedGermany
| | - Tom Bennett
- School of BiologyFaculty of Biological SciencesUniversity of LeedsLeedsLS2 9JTUK
- Sainsbury Laboratory Cambridge UniversityBateman StreetCambridgeCB2 1LRUK
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37
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Ibarra-Laclette E, Venancio-Rodríguez CA, Vásquez-Aguilar AA, Alonso-Sánchez AG, Pérez-Torres CA, Villafán E, Ramírez-Barahona S, Galicia S, Sosa V, Rebollar EA, Lara C, González-Rodríguez A, Díaz-Fleisher F, Ornelas JF. Transcriptional Basis for Haustorium Formation and Host Establishment in Hemiparasitic Psittacanthus schiedeanus Mistletoes. Front Genet 2022; 13:929490. [PMID: 35769994 PMCID: PMC9235361 DOI: 10.3389/fgene.2022.929490] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2022] [Accepted: 05/20/2022] [Indexed: 11/13/2022] Open
Abstract
The mistletoe Psittacanthus schiedeanus, a keystone species in interaction networks between plants, pollinators, and seed dispersers, infects a wide range of native and non-native tree species of commercial interest. Here, using RNA-seq methodology we assembled the whole circularized quadripartite structure of P. schiedeanus chloroplast genome and described changes in the gene expression of the nuclear genomes across time of experimentally inoculated seeds. Of the 140,467 assembled and annotated uniGenes, 2,000 were identified as differentially expressed (DEGs) and were classified in six distinct clusters according to their expression profiles. DEGs were also classified in enriched functional categories related to synthesis, signaling, homoeostasis, and response to auxin and jasmonic acid. Since many orthologs are involved in lateral or adventitious root formation in other plant species, we propose that in P. schiedeanus (and perhaps in other rootless mistletoe species), these genes participate in haustorium formation by complex regulatory networks here described. Lastly, and according to the structural similarities of P. schiedeanus enzymes with those that are involved in host cell wall degradation in fungi, we suggest that a similar enzymatic arsenal is secreted extracellularly and used by mistletoes species to easily parasitize and break through tissues of the host.
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Affiliation(s)
- Enrique Ibarra-Laclette
- Instituto de Ecología A.C. (INECOL), Red de Estudios Moleculares Avanzados (REMAv), Xalapa, Mexico
| | | | | | | | - Claudia-Anahí Pérez-Torres
- Instituto de Ecología A.C. (INECOL), Red de Estudios Moleculares Avanzados (REMAv), Xalapa, Mexico
- Investigador por Mexico-CONACyT en el Instituto de Ecología A.C. (INECOL), Xalapa, Mexico
| | - Emanuel Villafán
- Instituto de Ecología A.C. (INECOL), Red de Estudios Moleculares Avanzados (REMAv), Xalapa, Mexico
| | - Santiago Ramírez-Barahona
- Departamento de Botánica, Instituto de Biología, Universidad Nacional Autónoma de Mexico (UNAM), Ciudad de Mexico, Mexico
| | - Sonia Galicia
- Instituto de Ecología A.C. (INECOL), Red de Biología Evolutiva, Xalapa, Mexico
| | - Victoria Sosa
- Instituto de Ecología A.C. (INECOL), Red de Biología Evolutiva, Xalapa, Mexico
| | - Eria A. Rebollar
- Centro de Ciencias Genómicas, Universidad Nacional Autónoma de Mexico, Cuernavaca, Mexico
| | - Carlos Lara
- Centro de Investigación en Ciencias Biológicas, Universidad Autónoma de Tlaxcala, Tlaxcala, Mexico
| | - Antonio González-Rodríguez
- Laboratorio de Genética de la Conservación, Instituto de Investigaciones en Ecosistemas y Sustentabilidad (IIES), UNAM, Morelia, Mexico
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Li Q, Martín-Fontecha ES, Khosla A, White AR, Chang S, Cubas P, Nelson DC. The strigolactone receptor D14 targets SMAX1 for degradation in response to GR24 treatment and osmotic stress. PLANT COMMUNICATIONS 2022; 3:100303. [PMID: 35529949 PMCID: PMC9073322 DOI: 10.1016/j.xplc.2022.100303] [Citation(s) in RCA: 27] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Revised: 12/15/2021] [Accepted: 01/25/2022] [Indexed: 05/25/2023]
Abstract
The effects of the phytohormone strigolactone (SL) and smoke-derived karrikins (KARs) on plants are generally distinct, despite the fact that they are perceived through very similar mechanisms. The homologous receptors DWARF14 (D14) and KARRIKIN-INSENSITIVE2 (KAI2), together with the F-box protein MORE AXILLARY GROWTH2 (MAX2), mediate SL and KAR responses, respectively, by targeting different SMAX1-LIKE (SMXL) family proteins for degradation. These mechanisms are putatively well-insulated, with D14-MAX2 targeting SMXL6, SMXL7, and SMXL8 and KAI2-MAX2 targeting SMAX1 and SMXL2 in Arabidopsis thaliana. Recent evidence challenges this model. We investigated whether D14 can target SMAX1 and whether this occurs naturally. Genetic analysis indicates that the SL analog GR24 promotes D14-SMAX1 crosstalk. Although D14 shows weaker interactions with SMAX1 than with SMXL2 or SMXL7, D14 mediates GR24-induced degradation of SMAX1 in plants. Osmotic stress triggers SMAX1 degradation, which is protective, through SL biosynthesis and signaling genes. Thus, D14-SMAX1 crosstalk may be beneficial and not simply a vestige of the evolution of the SL pathway.
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Affiliation(s)
- Qingtian Li
- Department of Botany and Plant Sciences, University of California, Riverside, CA 92521, USA
| | - Elena Sánchez Martín-Fontecha
- Plant Molecular Genetics Department, Centro Nacional de Biotecnología/CSIC, Campus Universidad Autόnoma de Madrid, Madrid, Spain
| | - Aashima Khosla
- Department of Botany and Plant Sciences, University of California, Riverside, CA 92521, USA
| | - Alexandra R.F. White
- Department of Botany and Plant Sciences, University of California, Riverside, CA 92521, USA
| | - Sunhyun Chang
- Department of Botany and Plant Sciences, University of California, Riverside, CA 92521, USA
| | - Pilar Cubas
- Plant Molecular Genetics Department, Centro Nacional de Biotecnología/CSIC, Campus Universidad Autόnoma de Madrid, Madrid, Spain
| | - David C. Nelson
- Department of Botany and Plant Sciences, University of California, Riverside, CA 92521, USA
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Fichtner F, Barbier FF, Kerr SC, Dudley C, Cubas P, Turnbull C, Brewer PB, Beveridge CA. Plasticity of bud outgrowth varies at cauline and rosette nodes in Arabidopsis thaliana. PLANT PHYSIOLOGY 2022; 188:1586-1603. [PMID: 34919723 PMCID: PMC8896621 DOI: 10.1093/plphys/kiab586] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/14/2021] [Accepted: 11/19/2021] [Indexed: 06/14/2023]
Abstract
Shoot branching is a complex mechanism in which secondary shoots grow from buds that are initiated from meristems established in leaf axils. The model plant Arabidopsis (Arabidopsis thaliana) has a rosette leaf growth pattern in the vegetative stage. After flowering initiation, the main stem elongates with the top leaf primordia developing into cauline leaves. Meristems in Arabidopsis initiate in the axils of rosette or cauline leaves, giving rise to rosette or cauline buds, respectively. Plasticity in the process of shoot branching is regulated by resource and nutrient availability as well as by plant hormones. However, few studies have attempted to test whether cauline and rosette branching are subject to the same plasticity. Here, we addressed this question by phenotyping cauline and rosette branching in three Arabidopsis ecotypes and several Arabidopsis mutants with varied shoot architectures. Our results showed no negative correlation between cauline and rosette branch numbers in Arabidopsis, demonstrating that there is no tradeoff between cauline and rosette bud outgrowth. Through investigation of the altered branching pattern of flowering pathway mutants and Arabidopsis ecotypes grown in various photoperiods and light regimes, we further elucidated that the number of cauline branches is closely related to flowering time. The number of rosette branches has an enormous plasticity compared with cauline branches and is influenced by genetic background, flowering time, light intensity, and temperature. Our data reveal different levels of plasticity in the regulation of branching at rosette and cauline nodes, and promote a framework for future branching analyses.
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Affiliation(s)
- Franziska Fichtner
- School of Biological Sciences, The University of Queensland, St Lucia QLD 4072, Australia
- ARC Centre of Excellence for Plant Success in Nature and Agriculture, The University of Queensland, St Lucia QLD 4072, Australia
- Max Planck Institute of Molecular Plant Physiology, Potsdam-Golm 14476, Germany
| | - Francois F Barbier
- School of Biological Sciences, The University of Queensland, St Lucia QLD 4072, Australia
- ARC Centre of Excellence for Plant Success in Nature and Agriculture, The University of Queensland, St Lucia QLD 4072, Australia
| | - Stephanie C Kerr
- School of Biological Sciences, The University of Queensland, St Lucia QLD 4072, Australia
| | - Caitlin Dudley
- School of Biological Sciences, The University of Queensland, St Lucia QLD 4072, Australia
- ARC Centre of Excellence for Plant Success in Nature and Agriculture, The University of Queensland, St Lucia QLD 4072, Australia
| | - Pilar Cubas
- Department of Plant Molecular Genetics, Centro Nacional de Biotecnología-CSIC, Universidad Autónoma de Madrid, Madrid 28049, Spain
| | - Colin Turnbull
- Department of Life Sciences, Imperial College London, London SW7 2AZ, UK
| | - Philip B Brewer
- ARC Centre of Excellence in Plant Energy Biology, School of Agriculture, Food and Wine, Waite Research Precinct, The University of Adelaide, Glen Osmond SA 5064, Australia
| | - Christine A Beveridge
- School of Biological Sciences, The University of Queensland, St Lucia QLD 4072, Australia
- ARC Centre of Excellence for Plant Success in Nature and Agriculture, The University of Queensland, St Lucia QLD 4072, Australia
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Guercio AM, Torabi S, Cornu D, Dalmais M, Bendahmane A, Le Signor C, Pillot JP, Le Bris P, Boyer FD, Rameau C, Gutjahr C, de Saint Germain A, Shabek N. Structural and functional analyses explain Pea KAI2 receptor diversity and reveal stereoselective catalysis during signal perception. Commun Biol 2022; 5:126. [PMID: 35149763 PMCID: PMC8837635 DOI: 10.1038/s42003-022-03085-6] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Accepted: 01/28/2022] [Indexed: 11/10/2022] Open
Abstract
KAI2 proteins are plant α/β hydrolase receptors which perceive smoke-derived butenolide signals and endogenous, yet unidentified KAI2-ligands (KLs). The number of functional KAI2 receptors varies among species and KAI2 gene duplication and sub-functionalization likely plays an adaptative role by altering specificity towards different KLs. Legumes represent one of the largest families of flowering plants and contain many agronomic crops. Prior to their diversification, KAI2 underwent duplication resulting in KAI2A and KAI2B. Here we demonstrate that Pisum sativum KAI2A and KAI2B are active receptors and enzymes with divergent ligand stereoselectivity. KAI2B has a higher affinity for and hydrolyses a broader range of substrates including strigolactone-like stereoisomers. We determine the crystal structures of PsKAI2B in apo and butenolide-bound states. The biochemical, structural, and mass spectra analyses of KAI2s reveal a transient intermediate on the catalytic serine and a stable adduct on the catalytic histidine, confirming its role as a bona fide enzyme. Our work uncovers the stereoselectivity of ligand perception and catalysis by diverged KAI2 receptors and proposes adaptive sensitivity to KAR/KL and strigolactones by KAI2B.
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Affiliation(s)
- Angelica M Guercio
- Department of Plant Biology, College of Biological Sciences, University of California, Davis, CA, 95616, USA
| | - Salar Torabi
- Plant Genetics, TUM School of Life Sciences, Technical University of Munich (TUM), 85354, Freising, Germany
| | - David Cornu
- Université Paris-Saclay, CEA, CNRS, Institute for Integrative Biology of the Cell (I2BC), 91198, Gif-sur-Yvette, France
| | - Marion Dalmais
- Institute of Plant Sciences Paris-Saclay, INRAE, CNRS, Université Paris-Saclay, 91405, Orsay, France
| | - Abdelhafid Bendahmane
- Institute of Plant Sciences Paris-Saclay, INRAE, CNRS, Université Paris-Saclay, 91405, Orsay, France
| | - Christine Le Signor
- Agroecologie, AgroSup Dijon, INRAE, Université Bourgogne Franche Comte, 21000, Dijon, France
| | - Jean-Paul Pillot
- Institut Jean-Pierre Bourgin, INRAE, AgroParisTech, Université Paris-Saclay, 78000, Versailles, France
| | - Philippe Le Bris
- Institut Jean-Pierre Bourgin, INRAE, AgroParisTech, Université Paris-Saclay, 78000, Versailles, France
| | - François-Didier Boyer
- Université Paris-Saclay, CNRS, Institut de Chimie des Substances Naturelles, UPR 2301, 91198, Gif-sur-Yvette, France
| | - Catherine Rameau
- Institut Jean-Pierre Bourgin, INRAE, AgroParisTech, Université Paris-Saclay, 78000, Versailles, France
| | - Caroline Gutjahr
- Plant Genetics, TUM School of Life Sciences, Technical University of Munich (TUM), 85354, Freising, Germany
| | | | - Nitzan Shabek
- Department of Plant Biology, College of Biological Sciences, University of California, Davis, CA, 95616, USA.
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Wu F, Gao Y, Yang W, Sui N, Zhu J. Biological Functions of Strigolactones and Their Crosstalk With Other Phytohormones. FRONTIERS IN PLANT SCIENCE 2022; 13:821563. [PMID: 35283865 PMCID: PMC8908206 DOI: 10.3389/fpls.2022.821563] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/24/2021] [Accepted: 01/24/2022] [Indexed: 05/10/2023]
Abstract
Phytohormones are small chemicals critical for plant development and adaptation to a changing environment. Strigolactones (SLs), carotenoid-derived small signalling molecules and a class of phytohormones, regulate multiple developmental processes and respond to diverse environmental signals. SLs also coordinate adjustments in the balance of resource distribution by strategic modification of the plant development, allowing plants to adapt to nutrient deficiency. Instead of operating independently, SL interplays with abscisic acid, cytokinin, auxin, ethylene, and some other plant phytohormones, forming elaborate signalling networks. Hormone signalling crosstalk in plant development and environmental response may occur in a fully concerted manner or as a cascade of sequential events. In many cases, the exact underlying mechanism is unclear because of the different effects of phytohormones and the varying backgrounds of their actions. In this review, we systematically summarise the synthesis, signal transduction, and biological functions of SLs and further highlight the significance of crosstalk between SLs and other phytohormones during plant development and resistance to ever-changing environments.
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Synthetic Strigolactone GR24 Improves Arabidopsis Somatic Embryogenesis through Changes in Auxin Responses. PLANTS 2021; 10:plants10122720. [PMID: 34961192 PMCID: PMC8704308 DOI: 10.3390/plants10122720] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/11/2021] [Revised: 12/03/2021] [Accepted: 12/06/2021] [Indexed: 11/16/2022]
Abstract
Somatic embryogenesis in Arabidopsis encompasses an induction phase requiring auxin as the inductive signal to promote cellular dedifferentiation and formation of the embryogenic tissue, and a developmental phase favoring the maturation of the embryos. Strigolactones (SLs) have been categorized as a novel group of plant hormones based on their ability to affect physiological phenomena in plants. The study analyzed the effects of synthetic strigolactone GR24, applied during the induction phase, on auxin response and formation of somatic embryos. The expression level of two SL biosynthetic genes, MOREAXILLARY GROWTH 3 and 4 (MAX3 and MAX4), which are responsible for the conversion of carotene to carotenal, increased during the induction phase of embryogenesis. Arabidopsis mutant studies indicated that the somatic embryo number was inhibited in max3 and max4 mutants, and this effect was reversed by applications of GR24, a synthetic strigolactone, and exacerbated by TIS108, a SL biosynthetic inhibitor. The transcriptional studies revealed that the regulation of GR24 and TIS108 on somatic embryogenesis correlated with changes in expression of AUXIN RESPONSIVE FACTORs 5, 8, 10, and 16, known to be required for the production of the embryogenic tissue, as well as the expression of WUSCHEL (WUS) and Somatic Embryogenesis Receptor-like Kinase 1 (SERK1), which are markers of cell dedifferentiation and embryogenic tissue formation. Collectively, this work demonstrated the novel role of SL in enhancing the embryogenic process in Arabidopsis and its requirement for inducing the expression of genes related to auxin signaling and production of embryogenic tissue.
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Kawa D, Taylor T, Thiombiano B, Musa Z, Vahldick HE, Walmsley A, Bucksch A, Bouwmeester H, Brady SM. Characterization of growth and development of sorghum genotypes with differential susceptibility to Striga hermonthica. JOURNAL OF EXPERIMENTAL BOTANY 2021; 72:7970-7983. [PMID: 34410382 PMCID: PMC8643648 DOI: 10.1093/jxb/erab380] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/24/2021] [Accepted: 08/17/2021] [Indexed: 06/13/2023]
Abstract
Two sorghum varieties, Shanqui Red (SQR) and SRN39, have distinct levels of susceptibility to the parasitic weed Striga hermonthica, which have been attributed to different strigolactone composition within their root exudates. Root exudates of the Striga-susceptible variety Shanqui Red (SQR) contain primarily 5-deoxystrigol, which has a high efficiency for inducing Striga germination. SRN39 roots primarily exude orobanchol, leading to reduced Striga germination and making this variety resistant to Striga. The structural diversity in exuded strigolactones is determined by a polymorphism in the LOW GERMINATION STIMULANT 1 (LGS1) locus. Yet, the genetic diversity between SQR and SRN39 is broad and has not been addressed in terms of growth and development. Here, we demonstrate additional differences between SQR and SRN39 by phenotypic and molecular characterization. A suite of genes related to metabolism was differentially expressed between SQR and SRN39. Increased levels of gibberellin precursors in SRN39 were accompanied by slower growth rate and developmental delay and we observed an overall increased SRN39 biomass. The slow-down in growth and differences in transcriptome profiles of SRN39 were strongly associated with plant age. Additionally, enhanced lateral root growth was observed in SRN39 and three additional genotypes exuding primarily orobanchol. In summary, we demonstrate that the differences between SQR and SRN39 reach further than the changes in strigolactone profile in the root exudate and translate into alterations in growth and development.
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Affiliation(s)
- Dorota Kawa
- Department of Plant Biology and Genome Center, University of California, Davis, Davis, CA, USA
| | - Tamera Taylor
- Department of Plant Biology and Genome Center, University of California, Davis, Davis, CA, USA
- Plant Biology Graduate Group, University of California, Davis, Davis, CA, USA
| | - Benjamin Thiombiano
- Plant Hormone Biology Group, Green Life Sciences Cluster, Swammerdam Institute for Life Science, University of Amsterdam, Amsterdam, the Netherlands
| | - Zayan Musa
- Department of Plant Biology and Genome Center, University of California, Davis, Davis, CA, USA
| | - Hannah E Vahldick
- Department of Plant Biology and Genome Center, University of California, Davis, Davis, CA, USA
| | - Aimee Walmsley
- Plant Hormone Biology Group, Green Life Sciences Cluster, Swammerdam Institute for Life Science, University of Amsterdam, Amsterdam, the Netherlands
| | - Alexander Bucksch
- Department of Plant Biology, University of Georgia, Athens, GA, USA
- Institute of Bioinformatics, University of Georgia, Athens, GA, USA
- Warnell School of Forestry and Natural Resources, University of Georgia, GA, USA
| | - Harro Bouwmeester
- Plant Hormone Biology Group, Green Life Sciences Cluster, Swammerdam Institute for Life Science, University of Amsterdam, Amsterdam, the Netherlands
| | - Siobhan M Brady
- Department of Plant Biology and Genome Center, University of California, Davis, Davis, CA, USA
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Rehman NU, Li X, Zeng P, Guo S, Jan S, Liu Y, Huang Y, Xie Q. Harmony but Not Uniformity: Role of Strigolactone in Plants. Biomolecules 2021; 11:1616. [PMID: 34827614 PMCID: PMC8615677 DOI: 10.3390/biom11111616] [Citation(s) in RCA: 4] [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: 09/20/2021] [Revised: 10/23/2021] [Accepted: 10/28/2021] [Indexed: 11/16/2022] Open
Abstract
Strigolactones (SLs) represent an important new plant hormone class marked by their multifunctional roles in plants and rhizosphere interactions, which stimulate hyphal branching in arbuscular mycorrhizal fungi (AMF) and seed germination of root parasitic plants. SLs have been broadly implicated in regulating root growth, shoot architecture, leaf senescence, nodulation, and legume-symbionts interaction, as well as a response to various external stimuli, such as abiotic and biotic stresses. These functional properties of SLs enable the genetic engineering of crop plants to improve crop yield and productivity. In this review, the conservation and divergence of SL pathways and its biological processes in multiple plant species have been extensively discussed with a particular emphasis on its interactions with other different phytohormones. These interactions may shed further light on the regulatory networks underlying plant growth, development, and stress responses, ultimately providing certain strategies for promoting crop yield and productivity with the challenges of global climate and environmental changes.
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Affiliation(s)
- Naveed Ur Rehman
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Guangdong Provincial Key Laboratory of Plant Molecular Breeding, South China Agricultural University, Guangzhou 510642, China; (N.U.R.); (X.L.); (P.Z.); (S.G.)
- Guangdong Laboratory of Lingnan Modern Agriculture, Guangzhou 510642, China
| | - Xi Li
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Guangdong Provincial Key Laboratory of Plant Molecular Breeding, South China Agricultural University, Guangzhou 510642, China; (N.U.R.); (X.L.); (P.Z.); (S.G.)
- Guangdong Laboratory of Lingnan Modern Agriculture, Guangzhou 510642, China
| | - Peichun Zeng
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Guangdong Provincial Key Laboratory of Plant Molecular Breeding, South China Agricultural University, Guangzhou 510642, China; (N.U.R.); (X.L.); (P.Z.); (S.G.)
- Guangdong Laboratory of Lingnan Modern Agriculture, Guangzhou 510642, China
| | - Shaoying Guo
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Guangdong Provincial Key Laboratory of Plant Molecular Breeding, South China Agricultural University, Guangzhou 510642, China; (N.U.R.); (X.L.); (P.Z.); (S.G.)
- Guangdong Laboratory of Lingnan Modern Agriculture, Guangzhou 510642, China
| | - Saad Jan
- Agriculture Department, Entomology Section Bacha Khan University, Charsadda 24420, Pakistan;
| | - Yunfeng Liu
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, College of Life Sciences and Technology, Guangxi University, Nanning 530004, China;
| | - Yifeng Huang
- Institute of Crop and Nuclear Technology Utilization, Zhejiang Academy of Agricultural Science, Hangzhou 310001, China
| | - Qingjun Xie
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Guangdong Provincial Key Laboratory of Plant Molecular Breeding, South China Agricultural University, Guangzhou 510642, China; (N.U.R.); (X.L.); (P.Z.); (S.G.)
- Guangdong Laboratory of Lingnan Modern Agriculture, Guangzhou 510642, China
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Dob A, Lakehal A, Novak O, Bellini C. Jasmonate inhibits adventitious root initiation through repression of CKX1 and activation of RAP2.6L transcription factor in Arabidopsis. JOURNAL OF EXPERIMENTAL BOTANY 2021; 72:7107-7118. [PMID: 34329421 PMCID: PMC8547155 DOI: 10.1093/jxb/erab358] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/23/2021] [Accepted: 07/28/2021] [Indexed: 05/04/2023]
Abstract
Adventitious rooting is a de novo organogenesis process that enables plants to propagate clonally and cope with environmental stresses. Adventitious root initiation (ARI) is controlled by interconnected transcriptional and hormonal networks, but there is little knowledge of the genetic and molecular programs orchestrating these networks. Thus, we have applied genome-wide transcriptome profiling to elucidate the transcriptional reprogramming events preceding ARI. These reprogramming events are associated with the down-regulation of cytokinin (CK) signaling and response genes, which could be triggers for ARI. Interestingly, we found that CK free base (iP, tZ, cZ, and DHZ) content declined during ARI, due to down-regulation of de novo CK biosynthesis and up-regulation of CK inactivation pathways. We also found that MYC2-dependent jasmonate (JA) signaling inhibits ARI by down-regulating the expression of the CYTOKININ OXIDASE/DEHYDROGENASE1 (CKX1) gene. We also demonstrated that JA and CK synergistically activate expression of the transcription factor RELATED to APETALA2.6 LIKE (RAP2.6L), and constitutive expression of this transcription factor strongly inhibits ARI. Collectively, our findings reveal that previously unknown genetic interactions between JA and CK play key roles in ARI.
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Affiliation(s)
- Asma Dob
- Umeå Plant Science Centre, Department of Plant Physiology, Umeå University, SE-90736 Umeå, Sweden
| | - Abdellah Lakehal
- Umeå Plant Science Centre, Department of Plant Physiology, Umeå University, SE-90736 Umeå, Sweden
- Umeå Plant Science Centre, Department of Forest Genetics and Plant Physiology, Swedish University of Agricultural Sciences, Umeå, Sweden
| | - Ondrej Novak
- Laboratory of Growth Regulators, Faculty of Science, Palacký University and Institute of Experimental Botany, Academy of Sciences of the Czech Republic, 78371 Olomouc, Czech Republic
- Umeå Plant Science Centre, Department of Forest Genetics and Plant Physiology, Swedish University of Agricultural Sciences, Umeå, Sweden
| | - Catherine Bellini
- Umeå Plant Science Centre, Department of Plant Physiology, Umeå University, SE-90736 Umeå, Sweden
- Institut Jean-Pierre Bourgin, INRAE, AgroParisTech, Université Paris-Saclay, FR-78000 Versailles, France
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Mazzoni-Putman SM, Brumos J, Zhao C, Alonso JM, Stepanova AN. Auxin Interactions with Other Hormones in Plant Development. Cold Spring Harb Perspect Biol 2021; 13:a039990. [PMID: 33903155 PMCID: PMC8485746 DOI: 10.1101/cshperspect.a039990] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
Auxin is a crucial growth regulator that governs plant development and responses to environmental perturbations. It functions at the heart of many developmental processes, from embryogenesis to organ senescence, and is key to plant interactions with the environment, including responses to biotic and abiotic stimuli. As remarkable as auxin is, it does not act alone, but rather solicits the help of, or is solicited by, other endogenous signals, including the plant hormones abscisic acid, brassinosteroids, cytokinins, ethylene, gibberellic acid, jasmonates, salicylic acid, and strigolactones. The interactions between auxin and other hormones occur at multiple levels: hormones regulate one another's synthesis, transport, and/or response; hormone-specific transcriptional regulators for different pathways physically interact and/or converge on common target genes; etc. However, our understanding of this crosstalk is still fragmentary, with only a few pieces of the gigantic puzzle firmly established. In this review, we provide a glimpse into the complexity of hormone interactions that involve auxin, underscoring how patchy our current understanding is.
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Affiliation(s)
- Serina M Mazzoni-Putman
- Department of Plant and Microbial Biology, North Carolina State University, Raleigh, North Carolina 27695, USA
| | - Javier Brumos
- Department of Plant and Microbial Biology, North Carolina State University, Raleigh, North Carolina 27695, USA
| | - Chengsong Zhao
- Department of Plant and Microbial Biology, North Carolina State University, Raleigh, North Carolina 27695, USA
| | - Jose M Alonso
- Department of Plant and Microbial Biology, North Carolina State University, Raleigh, North Carolina 27695, USA
| | - Anna N Stepanova
- Department of Plant and Microbial Biology, North Carolina State University, Raleigh, North Carolina 27695, USA
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de Saint Germain A, Jacobs A, Brun G, Pouvreau JB, Braem L, Cornu D, Clavé G, Baudu E, Steinmetz V, Servajean V, Wicke S, Gevaert K, Simier P, Goormachtig S, Delavault P, Boyer FD. A Phelipanche ramosa KAI2 protein perceives strigolactones and isothiocyanates enzymatically. PLANT COMMUNICATIONS 2021; 2:100166. [PMID: 34746757 PMCID: PMC8553955 DOI: 10.1016/j.xplc.2021.100166] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2020] [Revised: 01/25/2021] [Accepted: 01/31/2021] [Indexed: 05/18/2023]
Abstract
Phelipanche ramosa is an obligate root-parasitic weed that threatens major crops in central Europe. In order to germinate, it must perceive various structurally divergent host-exuded signals, including isothiocyanates (ITCs) and strigolactones (SLs). However, the receptors involved are still uncharacterized. Here, we identify five putative SL receptors in P. ramosa and show that PrKAI2d3 is involved in the stimulation of seed germination. We demonstrate the high plasticity of PrKAI2d3, which allows it to interact with different chemicals, including ITCs. The SL perception mechanism of PrKAI2d3 is similar to that of endogenous SLs in non-parasitic plants. We provide evidence that PrKAI2d3 enzymatic activity confers hypersensitivity to SLs. Additionally, we demonstrate that methylbutenolide-OH binds PrKAI2d3 and stimulates P. ramosa germination with bioactivity comparable to that of ITCs. This study demonstrates that P. ramosa has extended its signal perception system during evolution, a fact that should be considered for the development of specific and efficient biocontrol methods.
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Affiliation(s)
| | - Anse Jacobs
- Department of Plant Biotechnology and Bioinformatics, Ghent University, 9052 Gent, Belgium
- Center for Plant Systems Biology, VIB, 9052 Gent, Belgium
- Department of Biomolecular Medicine, Ghent University, 9000 Ghent, Belgium
- Center for Medical Biotechnology, VIB, 9000 Ghent, Belgium
| | - Guillaume Brun
- Laboratoire de Biologie et Pathologie Végétales (LBPV), Equipe d’Accueil 1157, Université de Nantes, 44000 Nantes, France
- Institute for Biology, Humboldt-Universität zu Berlin, 10115 Berlin, Germany
| | - Jean-Bernard Pouvreau
- Laboratoire de Biologie et Pathologie Végétales (LBPV), Equipe d’Accueil 1157, Université de Nantes, 44000 Nantes, France
| | - Lukas Braem
- Department of Plant Biotechnology and Bioinformatics, Ghent University, 9052 Gent, Belgium
- Center for Plant Systems Biology, VIB, 9052 Gent, Belgium
- Department of Biomolecular Medicine, Ghent University, 9000 Ghent, Belgium
- Center for Medical Biotechnology, VIB, 9000 Ghent, Belgium
| | - David Cornu
- Université Paris-Saclay, CEA, CNRS, Institute for Integrative Biology of the Cell (I2BC), 91198, Gif-sur-Yvette, France
| | - Guillaume Clavé
- Université Paris-Saclay, CNRS, Institut de Chimie des Substances Naturelles, UPR 2301, 91198, Gif-sur-Yvette, France
| | - Emmanuelle Baudu
- Institut Jean-Pierre Bourgin, INRAE, AgroParisTech, Université Paris-Saclay, 78000 Versailles, France
| | - Vincent Steinmetz
- Université Paris-Saclay, CNRS, Institut de Chimie des Substances Naturelles, UPR 2301, 91198, Gif-sur-Yvette, France
| | - Vincent Servajean
- Université Paris-Saclay, CNRS, Institut de Chimie des Substances Naturelles, UPR 2301, 91198, Gif-sur-Yvette, France
| | - Susann Wicke
- Institute for Biology, Humboldt-Universität zu Berlin, 10115 Berlin, Germany
| | - Kris Gevaert
- Department of Biomolecular Medicine, Ghent University, 9000 Ghent, Belgium
- Center for Medical Biotechnology, VIB, 9000 Ghent, Belgium
| | - Philippe Simier
- Laboratoire de Biologie et Pathologie Végétales (LBPV), Equipe d’Accueil 1157, Université de Nantes, 44000 Nantes, France
| | - Sofie Goormachtig
- Department of Plant Biotechnology and Bioinformatics, Ghent University, 9052 Gent, Belgium
- Center for Plant Systems Biology, VIB, 9052 Gent, Belgium
| | - Philippe Delavault
- Laboratoire de Biologie et Pathologie Végétales (LBPV), Equipe d’Accueil 1157, Université de Nantes, 44000 Nantes, France
| | - François-Didier Boyer
- Université Paris-Saclay, CNRS, Institut de Chimie des Substances Naturelles, UPR 2301, 91198, Gif-sur-Yvette, France
- Corresponding author
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Bhagat PK, Verma D, Sharma D, Sinha AK. HY5 and ABI5 transcription factors physically interact to fine tune light and ABA signaling in Arabidopsis. PLANT MOLECULAR BIOLOGY 2021; 107:117-127. [PMID: 34490593 DOI: 10.1007/s11103-021-01187-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/2021] [Accepted: 08/27/2021] [Indexed: 05/25/2023]
Abstract
Cross-talk between light and ABA signaling is mediated by physical interaction between HY5 and ABI5 Arabidopsis. Plants undergo numerous transitions during their life-cycle and have developed a very complex network of signaling to integrate information from their surroundings to effectively survive in the ever-changing environment. Light signaling is one of the crucial factors that govern the plant growth and development from the very first step of that is from seedling germination to the flowering. Similarly, Abscisic acid (ABA) signaling transduces the signals from external unfavorable condition to the internal developmental pathways and is crucial for regulation of seed maturation, dormancy germination and early seedling development. These two fundamental factors coordinately regulate plant wellbeing, but the underlying molecular mechanisms that drive this regulation are poorly understood. Here, we identified that two bZIP transcription factors, ELONGATED HYPOCOTYLE 5 (HY5), a positive regulator of light signaling and ABA-INSENSITIVE 5 (ABI5), a positive regulator of ABA signaling interacts and integrates the two pathways together. Our phenotypic data suggest that ABI5 may act as a negative regulator during photomorphogenesis in contrast, HY5 acts as a positive regulator of ABA signaling in an ABA dependent manner. We further showed that over-expression of HY5 leads to ABA-hypersensitive phenotype and late flowering phenotype. Taken together, our data provides key insights regarding the mechanism of interaction between ABI5-HY5 that fine tunes the stress and developmental response in Arabidopsis.
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Affiliation(s)
| | - Deepanjali Verma
- National Institute of Plant Genome Research, New Delhi, 110067, India
| | - Deepika Sharma
- National Institute of Plant Genome Research, New Delhi, 110067, India
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Xu Y, Wang J, Wang R, Wang L, Zhang C, Xu W, Wang S, Jiu S. The Role of Strigolactones in the Regulation of Root System Architecture in Grapevine ( Vitis vinifera L.) in Response to Root-Restriction Cultivation. Int J Mol Sci 2021; 22:8799. [PMID: 34445508 PMCID: PMC8395845 DOI: 10.3390/ijms22168799] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2021] [Revised: 08/11/2021] [Accepted: 08/13/2021] [Indexed: 11/17/2022] Open
Abstract
This study investigated the effects of root-restriction cultivation on the root architecture, endogenous strigolactone (SL) content, and SL-related genes expression in grapevine (Vitis vinifera L.). In addition, we clarified the effects of synthetic SL analog GR24 application on grapevine roots to explore the role of SLs in their development. The results showed that the root architecture changed significantly under root-restriction cultivation. At 40 days after transplantation (DAT), the contents of two types of SLs in roots under root restriction were both significantly lower than that in roots of the control. SL content was significantly positively correlated with the expression levels of VvCCD8 and VvD27, indicating that they play vital roles in SLs synthesis. After GR24 treatment for 20 days, the root length was significantly shorter than in the control. A low concentration (0.1 μM) of GR24 significantly reduced the root diameter and increased the fine-root density, while a high concentration (10 μM) of GR24 significantly reduced the lateral root (LR) length and increased the LR density. Concomitantly, GR24 (0.1 μM) reduced endogenous SL content. After GR24 treatment for 5 days, the total content of two tested SLs was highly positively correlated with the expression levels of VvDAD2, whereas it was highly negatively correlated with VvSMAXL4 at 20 days after GR24 treatment. This study helps to clarify the internal mechanism of root-restriction cultivation affecting the changes in grapevine root architecture, as well as further explore the important role of SLs in the growth of grapevine roots in response to root-restriction treatment.
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Affiliation(s)
| | | | | | | | | | | | | | - Songtao Jiu
- Department of Plant Science, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, China; (Y.X.); (J.W.); (R.W.); (L.W.); (C.Z.); (W.X.); (S.W.)
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50
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Barbier FF, Cao D, Fichtner F, Weiste C, Perez-Garcia MD, Caradeuc M, Le Gourrierec J, Sakr S, Beveridge CA. HEXOKINASE1 signalling promotes shoot branching and interacts with cytokinin and strigolactone pathways. THE NEW PHYTOLOGIST 2021; 231:1088-1104. [PMID: 33909299 DOI: 10.1111/nph.17427] [Citation(s) in RCA: 39] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2021] [Accepted: 04/18/2021] [Indexed: 05/08/2023]
Abstract
Plant architecture is controlled by several endogenous signals including hormones and sugars. However, only little information is known about the nature and roles of the sugar signalling pathways in this process. Here we test whether the sugar signalling pathway mediated by HEXOKINASE1 (HXK1) is involved in the control of shoot branching. To test the involvement of HXK1 in shoot branching and in the hormonal network controlling this process, we modulated the HXK1 pathway using physiological and genetic approaches in rose, pea and arabidopsis. Mannose-induced HXK signalling triggered bud outgrowth in rose and pea. In arabidopsis, both HXK1 deficiency and defoliation led to decreased shoot branching and conferred hypersensitivity to auxin. Complementation of the HXK1 knockout mutant gin2 with a catalytically inactive HXK1, restored shoot branching to the wild-type level. HXK1-deficient plants displayed decreased cytokinin levels and increased expression of MAX2, which is required for strigolactone signalling. The branching phenotype of HXK1-deficient plants could be partly restored by cytokinin treatment and strigolactone deficiency could override the negative impact of HXK1 deficiency on shoot branching. Our observations demonstrate that HXK1 signalling contributes to the regulation of shoot branching and interacts with hormones to modulate plant architecture.
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Affiliation(s)
- Francois F Barbier
- School of Biological Sciences, The University of Queensland, St Lucia, Qld, 4072, Australia
- Institut Agro, INRAE, IRHS, SFR QUASAV, Université Angers, Angers, 49000, France
- ARC Centre for Plant Success in Nature and Agriculture, The University of Queensland, St Lucia, Qld, 4072, Australia
| | - Da Cao
- School of Biological Sciences, The University of Queensland, St Lucia, Qld, 4072, Australia
- ARC Centre for Plant Success in Nature and Agriculture, The University of Queensland, St Lucia, Qld, 4072, Australia
| | - Franziska Fichtner
- School of Biological Sciences, The University of Queensland, St Lucia, Qld, 4072, Australia
- ARC Centre for Plant Success in Nature and Agriculture, The University of Queensland, St Lucia, Qld, 4072, Australia
| | - Christoph Weiste
- Department of Pharmaceutical Biology, Julius-von-Sachs-Institute, Biocenter, Julius-Maximilians-Universität Würzburg, Würzburg, 97082, Germany
| | | | - Mathieu Caradeuc
- Institut Agro, INRAE, IRHS, SFR QUASAV, Université Angers, Angers, 49000, France
| | - José Le Gourrierec
- Institut Agro, INRAE, IRHS, SFR QUASAV, Université Angers, Angers, 49000, France
| | - Soulaiman Sakr
- Institut Agro, INRAE, IRHS, SFR QUASAV, Université Angers, Angers, 49000, France
| | - Christine A Beveridge
- School of Biological Sciences, The University of Queensland, St Lucia, Qld, 4072, Australia
- ARC Centre for Plant Success in Nature and Agriculture, The University of Queensland, St Lucia, Qld, 4072, Australia
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