1
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Fichtner F, Humphreys JL, Barbier FF, Feil R, Westhoff P, Moseler A, Lunn JE, Smith SM, Beveridge CA. Strigolactone signalling inhibits trehalose 6-phosphate signalling independently of BRC1 to suppress shoot branching. THE NEW PHYTOLOGIST 2024. [PMID: 39187924 DOI: 10.1111/nph.20072] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/10/2024] [Accepted: 08/03/2024] [Indexed: 08/28/2024]
Abstract
The phytohormone strigolactone (SL) inhibits shoot branching, whereas the signalling metabolite trehalose 6-phosphate (Tre6P) promotes branching. How Tre6P and SL signalling may interact and which molecular mechanisms might be involved remains largely unknown. Transcript profiling of Arabidopsis SL mutants revealed a cluster of differentially expressed genes highly enriched in the Tre6P pathway compared with wild-type (WT) plants or brc1 mutants. Tre6P-related genes were also differentially expressed in axillary buds of garden pea (Pisum sativum) SL mutants. Tre6P levels were elevated in the SL signalling mutant more axillary (max) growth 2 compared with other SL mutants or WT plants indicating a role of MAX2-dependent SL signalling in regulating Tre6P levels. A transgenic approach to increase Tre6P levels demonstrated that all SL mutant lines and brc1 flowered earlier, showing all of these mutants were responsive to Tre6P. Elevated Tre6P led to increased branching in WT plants but not in max2 and max4 mutants, indicating some dependency between the SL pathway and Tre6P regulation of shoot branching. By contrast, elevated Tre6P led to an enhanced branching phenotype in brc1 mutants indicating independence between BRC1 and Tre6P. A model is proposed whereby SL signalling represses branching via Tre6P and independently of the BRC1 pathway.
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Affiliation(s)
- Franziska Fichtner
- School of Agriculture and Food Sustainability, 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
- Faculty of Mathematics and Natural Sciences, Institute of Plant Biochemistry, Heinrich Heine University Düsseldorf, Düsseldorf, 40225, Germany
- Cluster of Excellence in Plant Science (CEPLAS), Heinrich Heine University, Düsseldorf, 40225, Germany
- Max Planck Institute of Molecular Plant Physiology, Potsdam-Golm, 14476, Germany
| | - Jazmine L Humphreys
- ARC Centre for Plant Success in Nature and Agriculture, School of Natural Sciences, University of Tasmania, Hobart, TAS, 7001, Australia
| | - Francois F Barbier
- School of Agriculture and Food Sustainability, 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
- Institute for Plant Sciences of Montpellier, University of Montpellier, CNRS, INRAe, Institut Agro, Montpellier, 34060, France
| | - Regina Feil
- Max Planck Institute of Molecular Plant Physiology, Potsdam-Golm, 14476, Germany
| | - Philipp Westhoff
- Cluster of Excellence in Plant Science (CEPLAS), Heinrich Heine University, Düsseldorf, 40225, Germany
| | - Anna Moseler
- INRES-Chemical Signalling, University of Bonn, Bonn, 53113, Germany
| | - John E Lunn
- Max Planck Institute of Molecular Plant Physiology, Potsdam-Golm, 14476, Germany
| | - Steven M Smith
- ARC Centre for Plant Success in Nature and Agriculture, School of Natural Sciences, University of Tasmania, Hobart, TAS, 7001, Australia
| | - Christine A Beveridge
- School of Agriculture and Food Sustainability, 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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2
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Lan G, Wu M, Zhang Q, Yuan B, Shi G, Zhu N, Zheng Y, Cao Q, Qiao Q, Zhang T. Transcriptomic and Physiological Analyses for the Role of Hormones and Sugar in Axillary Bud Development of Wild Strawberry Stolon. PLANTS (BASEL, SWITZERLAND) 2024; 13:2241. [PMID: 39204677 PMCID: PMC11359144 DOI: 10.3390/plants13162241] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/24/2024] [Revised: 07/25/2024] [Accepted: 08/07/2024] [Indexed: 09/04/2024]
Abstract
Strawberries are mainly propagated by stolons, which can be divided into monopodial and sympodial types. Monopodial stolons consistently produce ramets at each node following the initial single dormant bud, whereas sympodial stolons develop a dormant bud before each ramet. Sympodial stolon encompasses both dormant buds and ramet buds, making it suitable for studying the formation mechanism of different stolon types. In this study, we utilized sympodial stolons from Fragaria nilgerrensis as materials and explored the mechanisms underlying sympodial stolon development through transcriptomic and phytohormonal analyses. The transcriptome results unveiled that auxin, cytokinin, and sugars likely act as main regulators. Endogenous hormone analysis revealed that the inactivation of auxin could influence bud dormancy. Exogenous cytokinin application primarily induced dormant buds to develop into secondary stolons, with the proportion of ramet formation being very low, less than 10%. Furthermore, weighted gene co-expression network analysis identified key genes involved in ramet formation, including auxin transport and response genes, the cytokinin activation gene LOG1, and glucose transport genes SWEET1 and SFP2. Consistently, in vitro cultivation experiments confirmed that glucose enhances the transition of dormant buds into ramets within two days. Collectively, cytokinin and glucose act as dormant breakers, with cytokinin mainly driving secondary stolon formation and glucose promoting ramet generation. This study improved our understanding of stolon patterning and bud development in the sympodial stolon of strawberries.
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Affiliation(s)
- Genqian Lan
- School of Agriculture, Yunnan University, Kunming 650091, China; (G.L.); (M.W.); (Q.Z.); (B.Y.); (G.S.); (N.Z.); (Y.Z.)
| | - Mingzhao Wu
- School of Agriculture, Yunnan University, Kunming 650091, China; (G.L.); (M.W.); (Q.Z.); (B.Y.); (G.S.); (N.Z.); (Y.Z.)
| | - Qihang Zhang
- School of Agriculture, Yunnan University, Kunming 650091, China; (G.L.); (M.W.); (Q.Z.); (B.Y.); (G.S.); (N.Z.); (Y.Z.)
| | - Bo Yuan
- School of Agriculture, Yunnan University, Kunming 650091, China; (G.L.); (M.W.); (Q.Z.); (B.Y.); (G.S.); (N.Z.); (Y.Z.)
| | - Guangxin Shi
- School of Agriculture, Yunnan University, Kunming 650091, China; (G.L.); (M.W.); (Q.Z.); (B.Y.); (G.S.); (N.Z.); (Y.Z.)
| | - Ni Zhu
- School of Agriculture, Yunnan University, Kunming 650091, China; (G.L.); (M.W.); (Q.Z.); (B.Y.); (G.S.); (N.Z.); (Y.Z.)
| | - Yibingyue Zheng
- School of Agriculture, Yunnan University, Kunming 650091, China; (G.L.); (M.W.); (Q.Z.); (B.Y.); (G.S.); (N.Z.); (Y.Z.)
| | - Qiang Cao
- College of Horticulture and Landscape, Yunnan Agricultural University, Kunming 650201, China;
| | - Qin Qiao
- College of Horticulture and Landscape, Yunnan Agricultural University, Kunming 650201, China;
| | - Ticao Zhang
- Key Laboratory of Phytochemistry and Natural Medicines, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
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3
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Wen R, Zhu M, Yu J, Kou L, Ahmad S, Wei X, Jiao G, Hu S, Sheng Z, Zhao F, Tang S, Shao G, Yu H, Hu P. Photosynthesis regulates tillering bud elongation and nitrogen-use efficiency via sugar-induced NGR5 in rice. THE NEW PHYTOLOGIST 2024; 243:1440-1454. [PMID: 38923565 DOI: 10.1111/nph.19921] [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: 01/15/2024] [Accepted: 06/06/2024] [Indexed: 06/28/2024]
Abstract
Rice tillering is one of the most important agronomical traits largely determining grain yield. Photosynthesis and nitrogen availability are two important factors affecting rice tiller bud elongation; however, underlying mechanism and their cross-talk is poorly understood. Here, we used map-based cloning, transcriptome profiling, phenotypic analysis, and molecular genetics to understand the roles of the Decreased Tiller Number 1 (DTN1) gene that encodes the fructose-1,6-bisphosphate aldolase and involves in photosynthesis required for light-induced axillary bud elongation in rice. Deficiency of DTN1 results in the reduced photosynthetic rate and decreased contents of sucrose and other sugars in both leaves and axillary buds, and the reduced tiller number in dtn1 mutant could be partially rescued by exogenous sucrose treatment. Furthermore, we found that the expression of nitrogen-mediated tiller growth response 5 (NGR5) was remarkably decreased in shoot base of dtn1-2, which can be activated by sucrose treatment. Overexpression of NGR5 in the dtn1-2 could partially rescue the reduced tiller number, and the tiller number of dtn1-2 was insensitive to nitrogen supply. This work demonstrated that the sugar level regulated by photosynthesis and DTN1 could positively regulate NGR5 expression, which coordinates the cross-talk between carbon and nitrate to control tiller bud outgrowth in rice.
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Affiliation(s)
- Rui Wen
- State Key Laboratory of Rice Biology and Breeding, China National Rice Research Institute, Hangzhou, 310006, China
| | - Maodi Zhu
- State Key Laboratory of Rice Biology and Breeding, China National Rice Research Institute, Hangzhou, 310006, China
| | - Junming Yu
- State Key Laboratory of Rice Biology and Breeding, China National Rice Research Institute, Hangzhou, 310006, China
| | - Liquan Kou
- State Key Laboratory of Plant Genomics and National Center for Plant Gene Research (Beijing), Institute of Genetics and Developmental Biology, The Innovative Academy of Seed Design, Chinese Academy of Sciences, Beijing, 100101, China
| | - Shakeel Ahmad
- Seed Center and Plant Genetic Resources Bank, Ministry of Environment, Water & Agriculture, Riyadh, 14712, Saudi Arabia
| | - Xiangjin Wei
- State Key Laboratory of Rice Biology and Breeding, China National Rice Research Institute, Hangzhou, 310006, China
| | - Guiai Jiao
- State Key Laboratory of Rice Biology and Breeding, China National Rice Research Institute, Hangzhou, 310006, China
| | - Shikai Hu
- State Key Laboratory of Rice Biology and Breeding, China National Rice Research Institute, Hangzhou, 310006, China
| | - Zhonghua Sheng
- State Key Laboratory of Rice Biology and Breeding, China National Rice Research Institute, Hangzhou, 310006, China
| | - Fengli Zhao
- State Key Laboratory of Rice Biology and Breeding, China National Rice Research Institute, Hangzhou, 310006, China
| | - Shaoqing Tang
- State Key Laboratory of Rice Biology and Breeding, China National Rice Research Institute, Hangzhou, 310006, China
| | - Gaoneng Shao
- State Key Laboratory of Rice Biology and Breeding, China National Rice Research Institute, Hangzhou, 310006, China
| | - Hong Yu
- State Key Laboratory of Plant Genomics and National Center for Plant Gene Research (Beijing), Institute of Genetics and Developmental Biology, The Innovative Academy of Seed Design, Chinese Academy of Sciences, Beijing, 100101, China
| | - Peisong Hu
- State Key Laboratory of Rice Biology and Breeding, China National Rice Research Institute, Hangzhou, 310006, China
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4
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Nahas Z, Ticchiarelli F, van Rongen M, Dillon J, Leyser O. The activation of Arabidopsis axillary buds involves a switch from slow to rapid committed outgrowth regulated by auxin and strigolactone. THE NEW PHYTOLOGIST 2024; 242:1084-1097. [PMID: 38503686 DOI: 10.1111/nph.19664] [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: 08/30/2023] [Accepted: 02/08/2024] [Indexed: 03/21/2024]
Abstract
Arabidopsis thaliana (Arabidopsis) shoot architecture is largely determined by the pattern of axillary buds that grow into lateral branches, the regulation of which requires integrating both local and systemic signals. Nodal explants - stem explants each bearing one leaf and its associated axillary bud - are a simplified system to understand the regulation of bud activation. To explore signal integration in bud activation, we characterised the growth dynamics of buds in nodal explants in key mutants and under different treatments. We observed that isolated axillary buds activate in two genetically and physiologically separable phases: a slow-growing lag phase, followed by a switch to rapid outgrowth. Modifying BRANCHED1 expression or the properties of the auxin transport network, including via strigolactone application, changed the length of the lag phase. While most interventions affected only the length of the lag phase, strigolactone treatment and a second bud also affected the rapid growth phase. Our results are consistent with the hypothesis that the slow-growing lag phase corresponds to the time during which buds establish canalised auxin transport out of the bud, after which they enter a rapid growth phase. Our work also hints at a role for auxin transport in influencing the maximum growth rate of branches.
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Affiliation(s)
- Zoe Nahas
- Sainsbury Laboratory, University of Cambridge, Cambridge, CB2 1LR, UK
| | | | - Martin van Rongen
- Sainsbury Laboratory, University of Cambridge, Cambridge, CB2 1LR, UK
| | - Jean Dillon
- Sainsbury Laboratory, University of Cambridge, Cambridge, CB2 1LR, UK
| | - Ottoline Leyser
- Sainsbury Laboratory, University of Cambridge, Cambridge, CB2 1LR, UK
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5
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O’Brien NLV, Holland B, Engelstädter J, Ortiz-Barrientos D. The distribution of fitness effects during adaptive walks using a simple genetic network. PLoS Genet 2024; 20:e1011289. [PMID: 38787919 PMCID: PMC11156440 DOI: 10.1371/journal.pgen.1011289] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2024] [Revised: 06/06/2024] [Accepted: 05/04/2024] [Indexed: 05/26/2024] Open
Abstract
The tempo and mode of adaptation depends on the availability of beneficial alleles. Genetic interactions arising from gene networks can restrict this availability. However, the extent to which networks affect adaptation remains largely unknown. Current models of evolution consider additive genotype-phenotype relationships while often ignoring the contribution of gene interactions to phenotypic variance. In this study, we model a quantitative trait as the product of a simple gene regulatory network, the negative autoregulation motif. Using forward-time genetic simulations, we measure adaptive walks towards a phenotypic optimum in both additive and network models. A key expectation from adaptive walk theory is that the distribution of fitness effects of new beneficial mutations is exponential. We found that both models instead harbored distributions with fewer large-effect beneficial alleles than expected. The network model also had a complex and bimodal distribution of fitness effects among all mutations, with a considerable density at deleterious selection coefficients. This behavior is reminiscent of the cost of complexity, where correlations among traits constrain adaptation. Our results suggest that the interactions emerging from genetic networks can generate complex and multimodal distributions of fitness effects.
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Affiliation(s)
- Nicholas L. V. O’Brien
- School of the Environment, The University of Queensland, Brisbane, Queensland, Australia
- ARC Centre of Excellence for Plant Success in Nature and Agriculture, The University of Queensland, Brisbane, QLD, Australia
| | - Barbara Holland
- School of Natural Sciences, University of Tasmania, Hobart, Tasmania, Australia
- ARC Centre of Excellence for Plant Success in Nature and Agriculture, University of Tasmania, Hobart, Tasmania, Australia
| | - Jan Engelstädter
- School of the Environment, The University of Queensland, Brisbane, Queensland, Australia
- ARC Centre of Excellence for Plant Success in Nature and Agriculture, The University of Queensland, Brisbane, QLD, Australia
| | - Daniel Ortiz-Barrientos
- School of the Environment, The University of Queensland, Brisbane, Queensland, Australia
- ARC Centre of Excellence for Plant Success in Nature and Agriculture, The University of Queensland, Brisbane, QLD, Australia
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6
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Xie C, Chen R, Sun Q, Hao D, Zong J, Guo H, Liu J, Li L. Physiological and Proteomic Analyses of mtn1 Mutant Reveal Key Players in Centipedegrass Tiller Development. PLANTS (BASEL, SWITZERLAND) 2024; 13:1028. [PMID: 38611557 PMCID: PMC11013472 DOI: 10.3390/plants13071028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2024] [Revised: 03/25/2024] [Accepted: 04/02/2024] [Indexed: 04/14/2024]
Abstract
Tillering directly determines the seed production and propagation capacity of clonal plants. However, the molecular mechanisms involved in the tiller development of clonal plants are still not fully understood. In this study, we conducted a proteome comparison between the tiller buds and stem node of a multiple-tiller mutant mtn1 (more tillering number 1) and a wild type of centipedegrass. The results showed significant increases of 29.03% and 27.89% in the first and secondary tiller numbers, respectively, in the mtn1 mutant compared to the wild type. The photosynthetic rate increased by 31.44%, while the starch, soluble sugar, and sucrose contents in the tiller buds and stem node showed increases of 13.79%, 39.10%, 97.64%, 37.97%, 55.64%, and 7.68%, respectively, compared to the wild type. Two groups comprising 438 and 589 protein species, respectively, were differentially accumulated in the tiller buds and stem node in the mtn1 mutant. Consistent with the physiological characteristics, sucrose and starch metabolism as well as plant hormone signaling were found to be enriched with differentially abundant proteins (DAPs) in the mtn1 mutant. These results revealed that sugars and plant hormones may play important regulatory roles in the tiller development in centipedegrass. These results expanded our understanding of tiller development in clonal plants.
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Affiliation(s)
- Chenming Xie
- Jiangsu Key Laboratory for the Research and Utilization of Plant Resource, Institute of Botany, Jiangsu Province and Chinese Academy of Sciences (Nanjing Botanical Garden Mem. Sun Yat-Sen), Nanjing 210014, China; (C.X.); (R.C.); (D.H.); (J.Z.); (H.G.); (J.L.)
| | - Rongrong Chen
- Jiangsu Key Laboratory for the Research and Utilization of Plant Resource, Institute of Botany, Jiangsu Province and Chinese Academy of Sciences (Nanjing Botanical Garden Mem. Sun Yat-Sen), Nanjing 210014, China; (C.X.); (R.C.); (D.H.); (J.Z.); (H.G.); (J.L.)
| | - Qixue Sun
- College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China;
| | - Dongli Hao
- Jiangsu Key Laboratory for the Research and Utilization of Plant Resource, Institute of Botany, Jiangsu Province and Chinese Academy of Sciences (Nanjing Botanical Garden Mem. Sun Yat-Sen), Nanjing 210014, China; (C.X.); (R.C.); (D.H.); (J.Z.); (H.G.); (J.L.)
| | - Junqin Zong
- Jiangsu Key Laboratory for the Research and Utilization of Plant Resource, Institute of Botany, Jiangsu Province and Chinese Academy of Sciences (Nanjing Botanical Garden Mem. Sun Yat-Sen), Nanjing 210014, China; (C.X.); (R.C.); (D.H.); (J.Z.); (H.G.); (J.L.)
| | - Hailin Guo
- Jiangsu Key Laboratory for the Research and Utilization of Plant Resource, Institute of Botany, Jiangsu Province and Chinese Academy of Sciences (Nanjing Botanical Garden Mem. Sun Yat-Sen), Nanjing 210014, China; (C.X.); (R.C.); (D.H.); (J.Z.); (H.G.); (J.L.)
| | - Jianxiu Liu
- Jiangsu Key Laboratory for the Research and Utilization of Plant Resource, Institute of Botany, Jiangsu Province and Chinese Academy of Sciences (Nanjing Botanical Garden Mem. Sun Yat-Sen), Nanjing 210014, China; (C.X.); (R.C.); (D.H.); (J.Z.); (H.G.); (J.L.)
| | - Ling Li
- Jiangsu Key Laboratory for the Research and Utilization of Plant Resource, Institute of Botany, Jiangsu Province and Chinese Academy of Sciences (Nanjing Botanical Garden Mem. Sun Yat-Sen), Nanjing 210014, China; (C.X.); (R.C.); (D.H.); (J.Z.); (H.G.); (J.L.)
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7
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Kreisz P, Hellens AM, Fröschel C, Krischke M, Maag D, Feil R, Wildenhain T, Draken J, Braune G, Erdelitsch L, Cecchino L, Wagner TC, Ache P, Mueller MJ, Becker D, Lunn JE, Hanson J, Beveridge CA, Fichtner F, Barbier FF, Weiste C. S 1 basic leucine zipper transcription factors shape plant architecture by controlling C/N partitioning to apical and lateral organs. Proc Natl Acad Sci U S A 2024; 121:e2313343121. [PMID: 38315839 PMCID: PMC10873608 DOI: 10.1073/pnas.2313343121] [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: 08/04/2023] [Accepted: 12/21/2023] [Indexed: 02/07/2024] Open
Abstract
Plants tightly control growth of their lateral organs, which led to the concept of apical dominance. However, outgrowth of the dormant lateral primordia is sensitive to the plant's nutritional status, resulting in an immense plasticity in plant architecture. While the impact of hormonal regulation on apical dominance is well characterized, the prime importance of sugar signaling to unleash lateral organ formation has just recently emerged. Here, we aimed to identify transcriptional regulators, which control the trade-off between growth of apical versus lateral organs. Making use of locally inducible gain-of-function as well as single and higher-order loss-of-function approaches of the sugar-responsive S1-basic-leucine-zipper (S1-bZIP) transcription factors, we disclosed their largely redundant function in establishing apical growth dominance. Consistently, comprehensive phenotypical and analytical studies of S1-bZIP mutants show a clear shift of sugar and organic nitrogen (N) allocation from apical to lateral organs, coinciding with strong lateral organ outgrowth. Tissue-specific transcriptomics reveal specific clade III SWEET sugar transporters, crucial for long-distance sugar transport to apical sinks and the glutaminase GLUTAMINE AMIDO-TRANSFERASE 1_2.1, involved in N homeostasis, as direct S1-bZIP targets, linking the architectural and metabolic mutant phenotypes to downstream gene regulation. Based on these results, we propose that S1-bZIPs control carbohydrate (C) partitioning from source leaves to apical organs and tune systemic N supply to restrict lateral organ formation by C/N depletion. Knowledge of the underlying mechanisms controlling plant C/N partitioning is of pivotal importance for breeding strategies to generate plants with desired architectural and nutritional characteristics.
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Affiliation(s)
- Philipp Kreisz
- Department of Pharmaceutical Biology, Faculty of Biology, Biocenter, Julius-von-Sachs-Institute, Julius-Maximilians-Universität Würzburg, Würzburg97082, Germany
| | - Alicia M. Hellens
- Australian Research Council Centre of Excellence for Plant Success in Nature and Agriculture, School of Biological Sciences, The University of Queensland, Brisbane, QLD4072, Australia
- School of Biological Sciences, The University of Queensland, Brisbane, QLD4072, Australia
| | - Christian Fröschel
- Department of Pharmaceutical Biology, Faculty of Biology, Biocenter, Julius-von-Sachs-Institute, Julius-Maximilians-Universität Würzburg, Würzburg97082, Germany
| | - Markus Krischke
- Department of Pharmaceutical Biology, Faculty of Biology, Biocenter, Julius-von-Sachs-Institute, Julius-Maximilians-Universität Würzburg, Würzburg97082, Germany
| | - Daniel Maag
- Department of Pharmaceutical Biology, Faculty of Biology, Biocenter, Julius-von-Sachs-Institute, Julius-Maximilians-Universität Würzburg, Würzburg97082, Germany
| | - Regina Feil
- Group System Regulation, Max Planck Institute of Molecular Plant Physiology, Potsdam-Golm14476, Germany
| | - Theresa Wildenhain
- Department of Pharmaceutical Biology, Faculty of Biology, Biocenter, Julius-von-Sachs-Institute, Julius-Maximilians-Universität Würzburg, Würzburg97082, Germany
| | - Jan Draken
- Department of Pharmaceutical Biology, Faculty of Biology, Biocenter, Julius-von-Sachs-Institute, Julius-Maximilians-Universität Würzburg, Würzburg97082, Germany
| | - Gabriel Braune
- Department of Pharmaceutical Biology, Faculty of Biology, Biocenter, Julius-von-Sachs-Institute, Julius-Maximilians-Universität Würzburg, Würzburg97082, Germany
| | - Leon Erdelitsch
- Department of Pharmaceutical Biology, Faculty of Biology, Biocenter, Julius-von-Sachs-Institute, Julius-Maximilians-Universität Würzburg, Würzburg97082, Germany
| | - Laura Cecchino
- Department of Pharmaceutical Biology, Faculty of Biology, Biocenter, Julius-von-Sachs-Institute, Julius-Maximilians-Universität Würzburg, Würzburg97082, Germany
| | - Tobias C. Wagner
- Department of Pharmaceutical Biology, Faculty of Biology, Biocenter, Julius-von-Sachs-Institute, Julius-Maximilians-Universität Würzburg, Würzburg97082, Germany
| | - Peter Ache
- Department of Molecular Plant Physiology and Biophysics, Faculty of Biology, Biocenter, Julius-von-Sachs-Institute, Julius-Maximilians-Universität Würzburg, Würzburg97082, Germany
| | - Martin J. Mueller
- Department of Pharmaceutical Biology, Faculty of Biology, Biocenter, Julius-von-Sachs-Institute, Julius-Maximilians-Universität Würzburg, Würzburg97082, Germany
| | - Dirk Becker
- Department of Molecular Plant Physiology and Biophysics, Faculty of Biology, Biocenter, Julius-von-Sachs-Institute, Julius-Maximilians-Universität Würzburg, Würzburg97082, Germany
| | - John E. Lunn
- Group System Regulation, Max Planck Institute of Molecular Plant Physiology, Potsdam-Golm14476, Germany
| | - Johannes Hanson
- Department of Plant Physiology, Umeå Plant Science Center, Umeå University, UmeåSE-901 87, Sweden
| | - Christine A. Beveridge
- Australian Research Council Centre of Excellence for Plant Success in Nature and Agriculture, School of Biological Sciences, The University of Queensland, Brisbane, QLD4072, Australia
- School of Biological Sciences, The University of Queensland, Brisbane, QLD4072, Australia
| | - Franziska Fichtner
- Australian Research Council Centre of Excellence for Plant Success in Nature and Agriculture, School of Biological Sciences, The University of Queensland, Brisbane, QLD4072, Australia
- School of Biological Sciences, The University of Queensland, Brisbane, QLD4072, Australia
- Department of Plant Biochemistry, Institute for Plant Biochemistry, Heinrich Heine University Düsseldorf, Düsseldorf40225, Germany
| | - Francois F. Barbier
- Australian Research Council Centre of Excellence for Plant Success in Nature and Agriculture, School of Biological Sciences, The University of Queensland, Brisbane, QLD4072, Australia
- School of Biological Sciences, The University of Queensland, Brisbane, QLD4072, Australia
- Institute for Plant Sciences of Montpellier, University of Montpellier, CNRS, INRAe, Institut Agro, Montpellier34060, France
| | - Christoph Weiste
- Department of Pharmaceutical Biology, Faculty of Biology, Biocenter, Julius-von-Sachs-Institute, Julius-Maximilians-Universität Würzburg, Würzburg97082, Germany
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8
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Li M, Li H, Zhu Q, Liu D, Li Z, Chen H, Luo J, Gong P, Ismail AM, Zhang Z. Knockout of the sugar transporter OsSTP15 enhances grain yield by improving tiller number due to increased sugar content in the shoot base of rice (Oryza sativa L.). THE NEW PHYTOLOGIST 2024; 241:1250-1265. [PMID: 38009305 DOI: 10.1111/nph.19411] [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: 09/22/2023] [Accepted: 10/27/2023] [Indexed: 11/28/2023]
Abstract
Sugar transporter proteins (STPs) play critical roles in regulating plant stress tolerance, growth, and development. However, the role of STPs in regulating crop yield is poorly understood. This study elucidates the mechanism by which knockout of the sugar transporter OsSTP15 enhances grain yield via increasing the tiller number in rice. We found that OsSTP15 is specifically expressed in the shoot base and vascular bundle sheath of seedlings and encodes a plasma membrane-localized high-affinity glucose efflux transporter. OsSTP15 knockout enhanced sucrose and trehalose-6-phosphate (Tre6P) synthesis in leaves and improved sucrose transport to the shoot base by inducing the expression of sucrose transporters. Higher glucose, sucrose, and Tre6P contents were observed at the shoot base of stp15 plants. Transcriptome and metabolome analyses of the shoot base demonstrated that OsSTP15 knockout upregulated the expression of cytokinin (CK) synthesis- and signaling pathway-related genes and increased CK levels. These findings suggest that OsSTP15 knockout represses glucose export from the cytoplasm and simultaneously enhances sugar transport from source leaves to the shoot base by promoting the synthesis of sucrose and Tre6P in leaves. Subsequent accumulation of glucose, sucrose, and Tre6P in the shoot base promotes tillering by stimulating the CK signaling pathway.
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Affiliation(s)
- Mingjuan Li
- College of Resources, Hunan Agricultural University, Changsha, 410128, China
| | - Hongye Li
- College of Resources, Hunan Agricultural University, Changsha, 410128, China
| | - Qidong Zhu
- College of Resources, Hunan Agricultural University, Changsha, 410128, China
| | - Dong Liu
- College of Resources, Hunan Agricultural University, Changsha, 410128, China
| | - Zhen Li
- College of Resources, Hunan Agricultural University, Changsha, 410128, China
| | - Haifei Chen
- College of Resources, Hunan Agricultural University, Changsha, 410128, China
| | - Jinsong Luo
- College of Resources, Hunan Agricultural University, Changsha, 410128, China
| | - Pan Gong
- College of Resources, Hunan Agricultural University, Changsha, 410128, China
| | - Abdelbagi M Ismail
- Crop and Environmental Sciences Division, International Rice Research Institute, Metro Manila, 1301, Philippines
| | - Zhenhua Zhang
- College of Resources, Hunan Agricultural University, Changsha, 410128, China
- Yuelushan Laboratory, Hongqi Road, Changsha, Hunan, 410128, China
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9
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Kean-Galeno T, Lopez-Arredondo D, Herrera-Estrella L. The Shoot Apical Meristem: An Evolutionary Molding of Higher Plants. Int J Mol Sci 2024; 25:1519. [PMID: 38338798 PMCID: PMC10855264 DOI: 10.3390/ijms25031519] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2023] [Revised: 11/27/2023] [Accepted: 01/23/2024] [Indexed: 02/12/2024] Open
Abstract
The shoot apical meristem (SAM) gives rise to the aerial structure of plants by producing lateral organs and other meristems. The SAM is responsible for plant developmental patterns, thus determining plant morphology and, consequently, many agronomic traits such as the number and size of fruits and flowers and kernel yield. Our current understanding of SAM morphology and regulation is based on studies conducted mainly on some angiosperms, including economically important crops such as maize (Zea mays) and rice (Oryza sativa), and the model species Arabidopsis (Arabidopsis thaliana). However, studies in other plant species from the gymnosperms are scant, making difficult comparative analyses that help us understand SAM regulation in diverse plant species. This limitation prevents deciphering the mechanisms by which evolution gave rise to the multiple plant structures within the plant kingdom and determines the conserved mechanisms involved in SAM maintenance and operation. This review aims to integrate and analyze the current knowledge of SAM evolution by combining the morphological and molecular information recently reported from the plant kingdom.
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Affiliation(s)
- Tania Kean-Galeno
- Institute of Genomics for Crop Abiotic Stress Tolerance, Plant and Soil Science Department, Texas Tech University, Lubbock, TX 79409, USA; (T.K.-G.); (D.L.-A.)
| | - Damar Lopez-Arredondo
- Institute of Genomics for Crop Abiotic Stress Tolerance, Plant and Soil Science Department, Texas Tech University, Lubbock, TX 79409, USA; (T.K.-G.); (D.L.-A.)
| | - Luis Herrera-Estrella
- Institute of Genomics for Crop Abiotic Stress Tolerance, Plant and Soil Science Department, Texas Tech University, Lubbock, TX 79409, USA; (T.K.-G.); (D.L.-A.)
- Unidad de Genómica Avanzada/Langebio, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, Irapuato 36821, Mexico
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10
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Lahari Z, van Boerdonk S, Omoboye OO, Reichelt M, Höfte M, Gershenzon J, Gheysen G, Ullah C. Strigolactone deficiency induces jasmonate, sugar and flavonoid phytoalexin accumulation enhancing rice defense against the blast fungus Pyricularia oryzae. THE NEW PHYTOLOGIST 2024; 241:827-844. [PMID: 37974472 DOI: 10.1111/nph.19354] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Accepted: 10/05/2023] [Indexed: 11/19/2023]
Abstract
Strigolactones (SLs) are carotenoid-derived phytohormones that regulate plant growth and development. While root-secreted SLs are well-known to facilitate plant symbiosis with beneficial microbes, the role of SLs in plant interactions with pathogenic microbes remains largely unexplored. Using genetic and biochemical approaches, we demonstrate a negative role of SLs in rice (Oryza sativa) defense against the blast fungus Pyricularia oryzae (syn. Magnaporthe oryzae). We found that SL biosynthesis and perception mutants, and wild-type (WT) plants after chemical inhibition of SLs, were less susceptible to P. oryzae. Strigolactone deficiency also resulted in a higher accumulation of jasmonates, soluble sugars and flavonoid phytoalexins in rice leaves. Likewise, in response to P. oryzae infection, SL signaling was downregulated, while jasmonate and sugar content increased markedly. The jar1 mutant unable to synthesize jasmonoyl-l-isoleucine, and the coi1-18 RNAi line perturbed in jasmonate signaling, both accumulated lower levels of sugars. However, when WT seedlings were sprayed with glucose or sucrose, jasmonate accumulation increased, suggesting a reciprocal positive interplay between jasmonates and sugars. Finally, we showed that functional jasmonate signaling is necessary for SL deficiency to induce rice defense against P. oryzae. We conclude that a reduction in rice SL content reduces P. oryzae susceptibility by activating jasmonate and sugar signaling pathways, and flavonoid phytoalexin accumulation.
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Affiliation(s)
- Zobaida Lahari
- Department of Biotechnology, Ghent University, Ghent, 9000, Belgium
| | - Sarah van Boerdonk
- Department of Biochemistry, Max Planck Institute for Chemical Ecology, Jena, 07745, Germany
| | - Olumide Owolabi Omoboye
- Department of Plants and Crops, Laboratory of Phytopathology, Ghent University, Ghent, 9000, Belgium
- Department of Microbiology, Faculty of Science, Obafemi Awolowo University, Ile-Ife, 220005, Nigeria
| | - Michael Reichelt
- Department of Biochemistry, Max Planck Institute for Chemical Ecology, Jena, 07745, Germany
| | - Monica Höfte
- Department of Plants and Crops, Laboratory of Phytopathology, Ghent University, Ghent, 9000, Belgium
| | - Jonathan Gershenzon
- Department of Biochemistry, Max Planck Institute for Chemical Ecology, Jena, 07745, Germany
| | | | - Chhana Ullah
- Department of Biochemistry, Max Planck Institute for Chemical Ecology, Jena, 07745, Germany
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11
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Zhao Y, Zha M, Xu C, Hou F, Wang Y. Proteomic Analysis Revealed the Antagonistic Effect of Decapitation and Strigolactones on the Tillering Control in Rice. PLANTS (BASEL, SWITZERLAND) 2023; 13:91. [PMID: 38202400 PMCID: PMC10780617 DOI: 10.3390/plants13010091] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2023] [Revised: 12/17/2023] [Accepted: 12/18/2023] [Indexed: 01/12/2024]
Abstract
Removing the panicle encourages the growth of buds on the elongated node by getting rid of apical dominance. Strigolactones (SLs) are plant hormones that suppress tillering in rice. The present study employed panicle removal (RP) and external application of synthesized strigolactones (GR) to modulate rice bud growth at node 2. We focused on the full-heading stage to investigate proteomic changes related to bud germination (RP-Co) and suppression (GR-RP). A total of 434 represented differentially abundant proteins (DAPs) were detected, with 272 DAPs explicitly specified in the bud germination process, 106 in the bud suppression process, and 28 in both. DAPs in the germination process were most associated with protein processing in the endoplasmic reticulum and ribosome biogenesis. DAPs were most associated with metabolic pathways and glycolysis/gluconeogenesis in the bud suppression process. Sucrose content and two enzymes of sucrose degradation in buds were also determined. Comparisons of DAPs between the two reversed processes revealed that sucrose metabolism might be a key to modulating rice bud growth. Moreover, sucrose or its metabolites should be a signal downstream of the SLs signal transduction that modulates rice bud outgrowth. Contemplating the result so far, it is possible to open new vistas of research to reveal the interaction between SLs and sucrose signaling in the control of tillering in rice.
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Affiliation(s)
- Yanhui Zhao
- College of Biology Resources and Environmental Sciences, Jishou University, Jishou 416000, China; (Y.Z.); (M.Z.); (F.H.)
| | - Manrong Zha
- College of Biology Resources and Environmental Sciences, Jishou University, Jishou 416000, China; (Y.Z.); (M.Z.); (F.H.)
- Key Laboratory of Plant Resources Conservation and Utilization, College of Hunan Province, Jishou 416000, China
| | - Congshan Xu
- Anhui Science and Technology Achievement Transformation Promotion Center, Anhui Provincial Institute of Science and Technology, Hefei 230002, China;
| | - Fangxu Hou
- College of Biology Resources and Environmental Sciences, Jishou University, Jishou 416000, China; (Y.Z.); (M.Z.); (F.H.)
| | - Yan Wang
- College of Biology Resources and Environmental Sciences, Jishou University, Jishou 416000, China; (Y.Z.); (M.Z.); (F.H.)
- Key Laboratory of Plant Resources Conservation and Utilization, College of Hunan Province, Jishou 416000, China
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12
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Chen Z, Chen Y, Shi L, Wang L, Li W. Interaction of Phytohormones and External Environmental Factors in the Regulation of the Bud Dormancy in Woody Plants. Int J Mol Sci 2023; 24:17200. [PMID: 38139028 PMCID: PMC10743443 DOI: 10.3390/ijms242417200] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2023] [Revised: 11/26/2023] [Accepted: 12/04/2023] [Indexed: 12/24/2023] Open
Abstract
Bud dormancy and release are essential phenomena that greatly assist in adapting to adverse growing conditions and promoting the holistic growth and development of perennial plants. The dormancy and release process of buds in temperate perennial trees involves complex interactions between physiological and biochemical processes influenced by various environmental factors, representing a meticulously orchestrated life cycle. In this review, we summarize the role of phytohormones and their crosstalk in the establishment and release of bud dormancy. External environmental factors, such as light and temperature, play a crucial role in regulating bud germination. We also highlight the mechanisms of how light and temperature are involved in the regulation of bud dormancy by modulating phytohormones. Moreover, the role of nutrient factors, including sugar, in regulating bud dormancy is also discussed. This review provides a foundation for enhancing our understanding of plant growth and development patterns, fostering agricultural production, and exploring plant adaptive responses to adversity.
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Affiliation(s)
| | | | | | | | - Weixing Li
- College of Horticulture and Landscape Architecture, Yangzhou University, Yangzhou 225009, China; (Z.C.); (Y.C.); (L.S.); (L.W.)
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13
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Göbel M, Fichtner F. Functions of sucrose and trehalose 6-phosphate in controlling plant development. JOURNAL OF PLANT PHYSIOLOGY 2023; 291:154140. [PMID: 38007969 DOI: 10.1016/j.jplph.2023.154140] [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: 07/23/2023] [Revised: 11/13/2023] [Accepted: 11/13/2023] [Indexed: 11/28/2023]
Abstract
Plants exhibit enormous plasticity in regulating their architecture to be able to adapt to a constantly changing environment and carry out vital functions such as photosynthesis, anchoring, and nutrient uptake. Phytohormones play a role in regulating these responses, but sugar signalling mechanisms are also crucial. Sucrose is not only an important source of carbon and energy fuelling plant growth, but it also functions as a signalling molecule that influences various developmental processes. Trehalose 6-phosphate (Tre6P), a sucrose-specific signalling metabolite, is emerging as an important regulator in plant metabolism and development. Key players involved in sucrose and Tre6P signalling pathways, including MAX2, SnRK1, bZIP11, and TOR, have been implicated in processes such as flowering, branching, and root growth. We will summarize our current knowledge of how these pathways shape shoot and root architecture and highlight how sucrose and Tre6P signalling are integrated with known signalling networks in shaping plant growth.
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Affiliation(s)
- Moritz Göbel
- Heinrich Heine University Düsseldorf, Faculty of Mathematics and Natural Sciences, Institute of Plant Biochemistry, Germany; Cluster of Excellences on Plant Sciences (CEPLAS), Heinrich Heine University Düsseldorf, Germany
| | - Franziska Fichtner
- Heinrich Heine University Düsseldorf, Faculty of Mathematics and Natural Sciences, Institute of Plant Biochemistry, Germany; Cluster of Excellences on Plant Sciences (CEPLAS), Heinrich Heine University Düsseldorf, Germany.
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14
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Su C, Kokosza A, Xie X, Pěnčík A, Zhang Y, Raumonen P, Shi X, Muranen S, Topcu MK, Immanen J, Hagqvist R, Safronov O, Alonso-Serra J, Eswaran G, Venegas MP, Ljung K, Ward S, Mähönen AP, Himanen K, Salojärvi J, Fernie AR, Novák O, Leyser O, Pałubicki W, Helariutta Y, Nieminen K. Tree architecture: A strigolactone-deficient mutant reveals a connection between branching order and auxin gradient along the tree stem. Proc Natl Acad Sci U S A 2023; 120:e2308587120. [PMID: 37991945 PMCID: PMC10691325 DOI: 10.1073/pnas.2308587120] [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: 05/23/2023] [Accepted: 10/20/2023] [Indexed: 11/24/2023] Open
Abstract
Due to their long lifespan, trees and bushes develop higher order of branches in a perennial manner. In contrast to a tall tree, with a clearly defined main stem and branching order, a bush is shorter and has a less apparent main stem and branching pattern. To address the developmental basis of these two forms, we studied several naturally occurring architectural variants in silver birch (Betula pendula). Using a candidate gene approach, we identified a bushy kanttarelli variant with a loss-of-function mutation in the BpMAX1 gene required for strigolactone (SL) biosynthesis. While kanttarelli is shorter than the wild type (WT), it has the same number of primary branches, whereas the number of secondary branches is increased, contributing to its bush-like phenotype. To confirm that the identified mutation was responsible for the phenotype, we phenocopied kanttarelli in transgenic BpMAX1::RNAi birch lines. SL profiling confirmed that both kanttarelli and the transgenic lines produced very limited amounts of SL. Interestingly, the auxin (IAA) distribution along the main stem differed between WT and BpMAX1::RNAi. In the WT, the auxin concentration formed a gradient, being higher in the uppermost internodes and decreasing toward the basal part of the stem, whereas in the transgenic line, this gradient was not observed. Through modeling, we showed that the different IAA distribution patterns may result from the difference in the number of higher-order branches and plant height. Future studies will determine whether the IAA gradient itself regulates aspects of plant architecture.
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Affiliation(s)
- Chang Su
- Organismal and Evolutionary Biology Research Program, Faculty of Biological and Environmental Sciences, Viikki Plant Science Centre, University of Helsinki, Helsinki00014, Finland
- Institute of Biotechnology, Helsinki Institute of Life Science, University of Helsinki, Helsinki00014, Finland
| | - Andrzej Kokosza
- Mathematics and Computer Science, Adam Mickiewicz University, Poznań61-614, Poland
| | - Xiaonan Xie
- Center for Bioscience Research and Education, Utsunomiya University, Utsunomiya321-8505, Japan
| | - Aleš Pěnčík
- Laboratory of Growth Regulators, Institute of Experimental Botany of the Czech Academy of Sciences, Faculty of Science of Palacký University, OlomoucCZ-78371, Czech Republic
| | - Youjun Zhang
- Max-Planck-Institute of Molecular Plant Physiology, Potsdam-Golm14476, Germany
- Center of Plant Systems Biology and Biotechnology, 4000Plovdiv, Bulgaria
| | - Pasi Raumonen
- Mathematics, Tampere University, Tampere33720, Finland
| | - Xueping Shi
- Key Laboratory of Horticultural Plant Biology of Ministry of Education, College of Horticulture and Forestry Sciences, Huazhong Agricultural University, Wuhan430070, China
| | - Sampo Muranen
- Organismal and Evolutionary Biology Research Program, Faculty of Biological and Environmental Sciences, Viikki Plant Science Centre, University of Helsinki, Helsinki00014, Finland
- Institute of Biotechnology, Helsinki Institute of Life Science, University of Helsinki, Helsinki00014, Finland
| | - Melis Kucukoglu Topcu
- Organismal and Evolutionary Biology Research Program, Faculty of Biological and Environmental Sciences, Viikki Plant Science Centre, University of Helsinki, Helsinki00014, Finland
- Institute of Biotechnology, Helsinki Institute of Life Science, University of Helsinki, Helsinki00014, Finland
| | - Juha Immanen
- Organismal and Evolutionary Biology Research Program, Faculty of Biological and Environmental Sciences, Viikki Plant Science Centre, University of Helsinki, Helsinki00014, Finland
- Production Systems, Natural Resources Institute Finland (Luke), Helsinki00790, Finland
| | - Risto Hagqvist
- Production Systems, Natural Resources Institute Finland (Luke), Helsinki00790, Finland
| | - Omid Safronov
- Organismal and Evolutionary Biology Research Program, Faculty of Biological and Environmental Sciences, Viikki Plant Science Centre, University of Helsinki, Helsinki00014, Finland
- Molecular and Integrative Biosciences Research Program, Faculty of Biological and Environmental Sciences, and Viikki Plant Science Centre, University of Helsinki, Helsinki00014, Finland
| | - Juan Alonso-Serra
- Laboratoire de Reproduction et Développement des Plantes, École Normale Supérieure de Lyon, Institut National de la Recherche Agronomique, Lyon69342, France
| | - Gugan Eswaran
- Organismal and Evolutionary Biology Research Program, Faculty of Biological and Environmental Sciences, Viikki Plant Science Centre, University of Helsinki, Helsinki00014, Finland
- Institute of Biotechnology, Helsinki Institute of Life Science, University of Helsinki, Helsinki00014, Finland
| | - Mirko Pavicic Venegas
- Biosciences Division, Oak Ridge National Laboratory, Oak Ridge, TN37830
- National Plant Phenotyping Infrastructure, Helsinki Institute of Life Science, University of Helsinki, Biocenter Finland, Helsinki00014, Finland
| | - Karin Ljung
- Department of Forest Genetics and Plant Physiology, Umeå Plant Science Centre, Swedish University of Agricultural Sciences, 90183Umeå, Sweden
| | - Sally Ward
- Sainsbury Laboratory, University of Cambridge, CambridgeCB2 1LR, United Kingdom
| | - Ari Pekka Mähönen
- Organismal and Evolutionary Biology Research Program, Faculty of Biological and Environmental Sciences, Viikki Plant Science Centre, University of Helsinki, Helsinki00014, Finland
- Institute of Biotechnology, Helsinki Institute of Life Science, University of Helsinki, Helsinki00014, Finland
| | - Kristiina Himanen
- Organismal and Evolutionary Biology Research Program, Faculty of Biological and Environmental Sciences, Viikki Plant Science Centre, University of Helsinki, Helsinki00014, Finland
- National Plant Phenotyping Infrastructure, Helsinki Institute of Life Science, University of Helsinki, Biocenter Finland, Helsinki00014, Finland
| | - Jarkko Salojärvi
- Organismal and Evolutionary Biology Research Program, Faculty of Biological and Environmental Sciences, Viikki Plant Science Centre, University of Helsinki, Helsinki00014, Finland
- School of Biological Sciences, Nanyang Technological University, Singapore637551, Singapore
| | - Alisdair R. Fernie
- Max-Planck-Institute of Molecular Plant Physiology, Potsdam-Golm14476, Germany
- Center of Plant Systems Biology and Biotechnology, 4000Plovdiv, Bulgaria
| | - Ondřej Novák
- Laboratory of Growth Regulators, Institute of Experimental Botany of the Czech Academy of Sciences, Faculty of Science of Palacký University, OlomoucCZ-78371, Czech Republic
- Centre of the Region Haná for Biotechnological and Agricultural Research, Faculty of Science, Palacký University and Institute of Experimental Botany of the Academy of Sciences of the Czech Republic, Olomouc78371, Czech Republic
| | - Ottoline Leyser
- Sainsbury Laboratory, University of Cambridge, CambridgeCB2 1LR, United Kingdom
| | - Wojtek Pałubicki
- Mathematics and Computer Science, Adam Mickiewicz University, Poznań61-614, Poland
| | - Ykä Helariutta
- Organismal and Evolutionary Biology Research Program, Faculty of Biological and Environmental Sciences, Viikki Plant Science Centre, University of Helsinki, Helsinki00014, Finland
- Institute of Biotechnology, Helsinki Institute of Life Science, University of Helsinki, Helsinki00014, Finland
- Sainsbury Laboratory, University of Cambridge, CambridgeCB2 1LR, United Kingdom
| | - Kaisa Nieminen
- Organismal and Evolutionary Biology Research Program, Faculty of Biological and Environmental Sciences, Viikki Plant Science Centre, University of Helsinki, Helsinki00014, Finland
- Production Systems, Natural Resources Institute Finland (Luke), Helsinki00790, Finland
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15
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Rahmati Ishka M, Julkowska M. Tapping into the plasticity of plant architecture for increased stress resilience. F1000Res 2023; 12:1257. [PMID: 38434638 PMCID: PMC10905174 DOI: 10.12688/f1000research.140649.1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 08/24/2023] [Indexed: 03/05/2024] Open
Abstract
Plant architecture develops post-embryonically and emerges from a dialogue between the developmental signals and environmental cues. Length and branching of the vegetative and reproductive tissues were the focus of improvement of plant performance from the early days of plant breeding. Current breeding priorities are changing, as we need to prioritize plant productivity under increasingly challenging environmental conditions. While it has been widely recognized that plant architecture changes in response to the environment, its contribution to plant productivity in the changing climate remains to be fully explored. This review will summarize prior discoveries of genetic control of plant architecture traits and their effect on plant performance under environmental stress. We review new tools in phenotyping that will guide future discoveries of genes contributing to plant architecture, its plasticity, and its contributions to stress resilience. Subsequently, we provide a perspective into how integrating the study of new species, modern phenotyping techniques, and modeling can lead to discovering new genetic targets underlying the plasticity of plant architecture and stress resilience. Altogether, this review provides a new perspective on the plasticity of plant architecture and how it can be harnessed for increased performance under environmental stress.
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16
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Van Dingenen J, De Keyser A, Desmet S, Clarysse A, Beullens S, Michiels J, Planque M, Goormachtig S. Strigolactones repress nodule development and senescence in pea. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2023; 116:7-22. [PMID: 37608631 DOI: 10.1111/tpj.16421] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/03/2023] [Revised: 06/21/2023] [Accepted: 08/02/2023] [Indexed: 08/24/2023]
Abstract
Strigolactones are a class of phytohormones that are involved in many different plant developmental processes, including the rhizobium-legume nodule symbiosis. Although both positive and negative effects of strigolactones on the number of nodules have been reported, the influence of strigolactones on nodule development is still unknown. Here, by means of the ramosus (rms) mutants of Pisum sativum (pea) cv Terese, we investigated the impact of strigolactone biosynthesis (rms1 and rms5) and signaling (rms3 and rms4) mutants on nodule growth. The rms mutants had more red, that is, functional, and larger nodules than the wild-type plants. Additionally, the increased nitrogen fixation and senescence zones with consequently reduced meristematic and infection zones indicated that the rms nodules developed faster than the wild-type nodules. An enhanced expression of the nodule zone-specific molecular markers for meristem activity and senescence supported the enlarged, fast maturing nodules. Interestingly, the master nodulation regulator, NODULE INCEPTION, NIN, was strongly induced in nodules of all rms mutants but not prior to inoculation. Determination of sugar levels with both bulk and spatial metabolomics in roots and nodules, respectively, hints at slightly increased malic acid levels early during nodule primordia formation and reduced sugar levels at later stages, possibly the consequence of an increased carbon usage of the enlarged nodules, contributing to the enhanced senescence. Taken together, these results suggest that strigolactones regulate the development of nodules, which is probably mediated through NIN, and available plant sugars.
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Affiliation(s)
- Judith Van Dingenen
- Department of Plant Biotechnology and Bioinformatics, Ghent University, 9052, Ghent, Belgium
- Center for Plant Systems Biology, VIB, 9052, Ghent, Belgium
| | - Annick De Keyser
- Department of Plant Biotechnology and Bioinformatics, Ghent University, 9052, Ghent, Belgium
- Center for Plant Systems Biology, VIB, 9052, Ghent, Belgium
| | - Sandrien Desmet
- Department of Plant Biotechnology and Bioinformatics, Ghent University, 9052, Ghent, Belgium
- Center for Plant Systems Biology, VIB, 9052, Ghent, Belgium
- VIB Metabolomics Core, VIB, Technologiepark 71, 9052, Ghent, Belgium
| | - Alexander Clarysse
- Department of Plant Biotechnology and Bioinformatics, Ghent University, 9052, Ghent, Belgium
- Center for Plant Systems Biology, VIB, 9052, Ghent, Belgium
| | - Serge Beullens
- Centre of Microbial and Plant Genetics, KU Leuven, Leuven, Belgium
- Center for Microbiology, VIB, Leuven, Belgium
| | - Jan Michiels
- Centre of Microbial and Plant Genetics, KU Leuven, Leuven, Belgium
- Center for Microbiology, VIB, Leuven, Belgium
| | - Mélanie Planque
- Spatial Metabolomics Expertise Center, VIB Center for Cancer Biology, VIB, Leuven, Belgium
| | - Sofie Goormachtig
- Department of Plant Biotechnology and Bioinformatics, Ghent University, 9052, Ghent, Belgium
- Center for Plant Systems Biology, VIB, 9052, Ghent, Belgium
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17
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Dun EA, Brewer PB, Gillam EMJ, Beveridge CA. Strigolactones and Shoot Branching: What Is the Real Hormone and How Does It Work? PLANT & CELL PHYSIOLOGY 2023; 64:967-983. [PMID: 37526426 PMCID: PMC10504579 DOI: 10.1093/pcp/pcad088] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/01/2023] [Revised: 07/26/2023] [Accepted: 08/01/2023] [Indexed: 08/02/2023]
Abstract
There have been substantial advances in our understanding of many aspects of strigolactone regulation of branching since the discovery of strigolactones as phytohormones. These include further insights into the network of phytohormones and other signals that regulate branching, as well as deep insights into strigolactone biosynthesis, metabolism, transport, perception and downstream signaling. In this review, we provide an update on recent advances in our understanding of how the strigolactone pathway co-ordinately and dynamically regulates bud outgrowth and pose some important outstanding questions that are yet to be resolved.
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Affiliation(s)
- Elizabeth A Dun
- ARC Centre of Excellence for Plant Success in Nature and Agriculture, The University of Queensland, St Lucia, QLD 4072, Australia
- School of Agriculture and Food Sustainability, The University of Queensland, St Lucia, QLD 4072, Australia
| | - Philip B Brewer
- ARC Centre of Excellence for Plant Success in Nature and Agriculture, The University of Queensland, St Lucia, QLD 4072, Australia
- Waite Research Institute, School of Agriculture Food & Wine, The University of Adelaide, Adelaide, SA 5064, Australia
| | - Elizabeth M J Gillam
- School of Chemistry and Molecular Biosciences, The University of Queensland, St Lucia, QLD 4072, Australia
| | - Christine A Beveridge
- ARC Centre of Excellence for Plant Success in Nature and Agriculture, The University of Queensland, St Lucia, QLD 4072, Australia
- School of Agriculture and Food Sustainability, The University of Queensland, St Lucia, QLD 4072, Australia
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18
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Barbier F, Fichtner F, Beveridge C. The strigolactone pathway plays a crucial role in integrating metabolic and nutritional signals in plants. NATURE PLANTS 2023; 9:1191-1200. [PMID: 37488268 DOI: 10.1038/s41477-023-01453-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2022] [Accepted: 05/24/2023] [Indexed: 07/26/2023]
Abstract
Strigolactones are rhizosphere signals and phytohormones that play crucial roles in plant development. They are also well known for their role in integrating nitrate and phosphate signals to regulate shoot and root development. More recently, sugars and citrate (an intermediate of the tricarboxylic acid cycle) were reported to inhibit the strigolactone response, with dramatic effects on shoot architecture. This Review summarizes the discoveries recently made concerning the mechanisms through which the strigolactone pathway integrates sugar, metabolite and nutrient signals. We highlight here that strigolactones and MAX2-dependent signalling play crucial roles in mediating the impacts of nutritional and metabolic cues on plant development and metabolism. We also discuss and speculate concerning the role of these interactions in plant evolution and adaptation to their environment.
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Affiliation(s)
- Francois Barbier
- School of Biological Sciences, University of Queensland, St Lucia, Queensland, Australia.
- ARC Centre of Excellence for Plant Success in Nature and Agriculture, University of Queensland, St Lucia, Queensland, Australia.
| | - Franziska Fichtner
- Institute of Plant Biochemistry, Heinrich Heine University Düsseldorf, Düsseldorf, Germany
| | - Christine Beveridge
- School of Biological Sciences, University of Queensland, St Lucia, Queensland, Australia
- ARC Centre of Excellence for Plant Success in Nature and Agriculture, University of Queensland, St Lucia, Queensland, Australia
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19
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Kong K, Xu M, Xu Z, Lv W, Lv P, Begum N, Liu B, Liu B, Zhao T. Dysfunction of GmVPS8a causes compact plant architecture in soybean. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2023; 331:111677. [PMID: 36931563 DOI: 10.1016/j.plantsci.2023.111677] [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: 10/24/2022] [Revised: 03/12/2023] [Accepted: 03/14/2023] [Indexed: 06/18/2023]
Abstract
Vacuolar Protein Sorting 8 (Vps8) protein is a specific subunit of the class C core vacuole/endosome tethering (CORVET) complex that plays a key role in endosomal trafficking in yeast (Saccharomyces cerevisiae). However, its functions remain largely unclear in plant vegetative growth. Here, we identified a soybean (Glycine max) T4219 mutant characterized with compact plant architecture. Map-based cloning targeted to a candidate gene GmVPS8a (Glyma.07g049700) and further found that two nucleotides deletion in the first exon of GmVPS8a causes a premature termination of the encoded protein in the T4219 mutant. Its functions were validated by CRISPR/Cas9-engineered mutation in the GmVPS8a gene that recapitulated the T4219 mutant phenotypes. Furthermore, NbVPS8a-silenced tobacco (Nicotiana benthamiana) plants exhibited similar phenotypes to the T4219 mutant, suggesting its conserved roles in plant growth. The GmVPS8a is widely expressed in multiple organs and its protein interacts with GmAra6a and GmRab5a. Combined analysis of transcriptomic and proteomic data revealed that dysfunction of GmVPS8a mainly affects pathways on auxin signal transduction, sugar transport and metabolism, and lipid metabolism. Collectively, our work reveals the function of GmVPS8a in plant architecture, which may extend a new way for genetic improvement of ideal plant-architecture breeding in soybean and other crops.
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Affiliation(s)
- Keke Kong
- Soybean Research Institute, Key Laboratory of Biology and Genetic Improvement of Soybean, National Center for Soybean Improvement (Ministry of Agriculture), National Key Laboratory for Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing 210095, China
| | - Mengge Xu
- Soybean Research Institute, Key Laboratory of Biology and Genetic Improvement of Soybean, National Center for Soybean Improvement (Ministry of Agriculture), National Key Laboratory for Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing 210095, China
| | - Zhiyong Xu
- Soybean Research Institute, Key Laboratory of Biology and Genetic Improvement of Soybean, National Center for Soybean Improvement (Ministry of Agriculture), National Key Laboratory for Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing 210095, China
| | - Wenhuan Lv
- Soybean Research Institute, Key Laboratory of Biology and Genetic Improvement of Soybean, National Center for Soybean Improvement (Ministry of Agriculture), National Key Laboratory for Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing 210095, China
| | - Peiyun Lv
- Soybean Research Institute, Key Laboratory of Biology and Genetic Improvement of Soybean, National Center for Soybean Improvement (Ministry of Agriculture), National Key Laboratory for Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing 210095, China
| | - Naheeda Begum
- Soybean Research Institute, Key Laboratory of Biology and Genetic Improvement of Soybean, National Center for Soybean Improvement (Ministry of Agriculture), National Key Laboratory for Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing 210095, China
| | - Bingqiang Liu
- National Soybean Improvement Center Shijiazhuang Sub-Center, North China Key Laboratory of Biology and Genetic Improvement of Soybean, Ministry of Agriculture, Laboratory of Crop Genetics and Breeding of Hebei, Cereal & Oil Crop Institute, Hebei Academy of Agricultural and Forestry Sciences, Shijiazhuang, China
| | - Bin Liu
- The National Key Facility for Crop Gene Resources and Genetic Improvement (NFCRI), Institute of Crop Science, Chinese Academy of Agricultural Sciences, Beijing, China.
| | - Tuanjie Zhao
- Soybean Research Institute, Key Laboratory of Biology and Genetic Improvement of Soybean, National Center for Soybean Improvement (Ministry of Agriculture), National Key Laboratory for Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing 210095, China.
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20
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Cao D, Chabikwa T, Barbier F, Dun EA, Fichtner F, Dong L, Kerr SC, Beveridge CA. Auxin-independent effects of apical dominance induce changes in phytohormones correlated with bud outgrowth. PLANT PHYSIOLOGY 2023; 192:1420-1434. [PMID: 36690819 PMCID: PMC10231355 DOI: 10.1093/plphys/kiad034] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/24/2022] [Revised: 12/20/2022] [Accepted: 12/20/2022] [Indexed: 06/01/2023]
Abstract
The inhibition of shoot branching by the growing shoot tip of plants, termed apical dominance, was originally thought to be mediated by auxin. Recently, the importance of the shoot tip sink strength during apical dominance has re-emerged with recent studies highlighting roles for sugars in promoting branching. This raises many unanswered questions on the relative roles of auxin and sugars in apical dominance. Here we show that auxin depletion after decapitation is not always the initial trigger of rapid cytokinin (CK) increases in buds that are instead correlated with enhanced sugars. Auxin may also act through strigolactones (SLs) which have been shown to suppress branching after decapitation, but here we show that SLs do not have a significant effect on initial bud outgrowth after decapitation. We report here that when sucrose or CK is abundant, SLs are less inhibitory during the bud release stage compared to during later stages and that SL treatment rapidly inhibits CK accumulation in pea (Pisum sativum) axillary buds of intact plants. After initial bud release, we find an important role of gibberellin (GA) in promoting sustained bud growth downstream of auxin. We are, therefore, able to suggest a model of apical dominance that integrates auxin, sucrose, SLs, CKs, and GAs and describes differences in signalling across stages of bud release to sustained growth.
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Affiliation(s)
- Da Cao
- ARC Centre of Excellence for Plant Success in Nature and Agriculture, School of Biological Sciences, The University of Queensland, Brisbane, QLD 4072, Australia
- School of Biological Sciences, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Tinashe Chabikwa
- School of Biological Sciences, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Francois Barbier
- ARC Centre of Excellence for Plant Success in Nature and Agriculture, School of Biological Sciences, The University of Queensland, Brisbane, QLD 4072, Australia
- School of Biological Sciences, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Elizabeth A Dun
- ARC Centre of Excellence for Plant Success in Nature and Agriculture, School of Biological Sciences, The University of Queensland, Brisbane, QLD 4072, Australia
- School of Biological Sciences, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Franziska Fichtner
- ARC Centre of Excellence for Plant Success in Nature and Agriculture, School of Biological Sciences, The University of Queensland, Brisbane, QLD 4072, Australia
- School of Biological Sciences, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Lili Dong
- School of Biological Sciences, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Stephanie C Kerr
- School of Biological Sciences, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Christine A Beveridge
- ARC Centre of Excellence for Plant Success in Nature and Agriculture, School of Biological Sciences, The University of Queensland, Brisbane, QLD 4072, Australia
- School of Biological Sciences, The University of Queensland, Brisbane, QLD 4072, Australia
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21
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Liang JH, Li JR, Liu C, Pan WQ, Wu WJ, Shi WJ, Wang LJ, Yi MF, Wu J. GhbZIP30-GhCCCH17 module accelerates corm dormancy release by reducing endogenous ABA under cold storage in Gladiolus. PLANT, CELL & ENVIRONMENT 2023. [PMID: 37128741 DOI: 10.1111/pce.14595] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/21/2022] [Revised: 03/07/2023] [Accepted: 04/17/2023] [Indexed: 05/03/2023]
Abstract
Gladiolus hybridus is one of the most popular flowers worldwide. However, its corm dormancy characteristic largely limits its off-season production. Long-term cold treatment (LT), which increases sugar content and reduces abscisic acid (ABA), is an efficient approach to accelerate corm dormancy release (CDR). Here, we identified a GhbZIP30-GhCCCH17 module that mediates the antagonism between sugars and ABA during CDR. We showed that sugars promoted CDR by reducing ABA levels in Gladiolus. Our data demonstrated that GhbZIP30 transcription factor directly binds the GhCCCH17 zinc finger promoter and activates its transcription, confirmed by yeast one-hybrid, dual-luciferase (Dual-LUC), chromatin immunoprecipitation-quantitative PCR (ChIP-qPCR) and electrophoretic mobility shift assay (EMSA). GhCCCH17 is a transcriptional activator, and its nuclear localisation is altered by glucose and cytokinin treatments. Both GhbZIP30 and GhCCCH17 positively respond to LT, sugars, and cytokinin treatments. Silencing GhbZIP30 or GhCCCH17 resulted in delayed CDR by regulating ABA metabolic genes, while their overexpression promoted CDR. Taken together, we propose that the GhbZIP30-GhCCCH17 module is involved in cold- and glucose-induced CDR by regulating ABA metabolic genes.
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Affiliation(s)
- Jia-Hui Liang
- Beijing Key Laboratory of Development and Quality Control of Ornamental Crops, Department of Ornamental Horticulture, China Agricultural University, Beijing, China
- Institute of Grassland, Flowers, and Ecology, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China
| | - Jing-Ru Li
- Beijing Key Laboratory of Development and Quality Control of Ornamental Crops, Department of Ornamental Horticulture, China Agricultural University, Beijing, China
| | - Chang Liu
- Beijing Key Laboratory of Development and Quality Control of Ornamental Crops, Department of Ornamental Horticulture, China Agricultural University, Beijing, China
| | - Wen-Qiang Pan
- Beijing Key Laboratory of Development and Quality Control of Ornamental Crops, Department of Ornamental Horticulture, China Agricultural University, Beijing, China
| | - Wen-Jing Wu
- Beijing Key Laboratory of Development and Quality Control of Ornamental Crops, Department of Ornamental Horticulture, China Agricultural University, Beijing, China
| | - Wen-Jing Shi
- Beijing Key Laboratory of Development and Quality Control of Ornamental Crops, Department of Ornamental Horticulture, China Agricultural University, Beijing, China
| | - Lu-Jia Wang
- Beijing Key Laboratory of Development and Quality Control of Ornamental Crops, Department of Ornamental Horticulture, China Agricultural University, Beijing, China
| | - Ming-Fang Yi
- Beijing Key Laboratory of Development and Quality Control of Ornamental Crops, Department of Ornamental Horticulture, China Agricultural University, Beijing, China
| | - Jian Wu
- Beijing Key Laboratory of Development and Quality Control of Ornamental Crops, Department of Ornamental Horticulture, China Agricultural University, Beijing, China
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22
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Ran F, Yuan Y, Bai X, Li C, Li J, Chen H. Carbon and nitrogen metabolism affects kentucky bluegrass rhizome expansion. BMC PLANT BIOLOGY 2023; 23:221. [PMID: 37101108 PMCID: PMC10131326 DOI: 10.1186/s12870-023-04230-x] [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: 01/04/2023] [Accepted: 04/15/2023] [Indexed: 06/19/2023]
Abstract
BACKGROUND Rhizome is vital for carbon and nitrogen metabolism of the whole plant. However, the effect of carbon and nitrogen in the rhizome on rhizome expansion remains unclear. RESULTS Three wild Kentucky bluegrass (Poa pratensis L.) germplasms with different rhizome expansion capacity (strong expansion capacity, 'YZ'; medium expansion capacity, 'WY'; and weak expansion capacity, 'AD') were planted in the field and the rhizomes number, tiller number, rhizome dry weight, physiological indicators and enzyme activity associated carbon and nitrogen metabolisms were measured. Liquid chromatography coupled to mass spectrometry (LC-MS) was utilized to analyze the metabolomic of the rhizomes. The results showed that the rhizome and tiller numbers of the YZ were 3.26 and 2.69-fold of that of the AD, respectively. The aboveground dry weight of the YZ was the greatest among all three germplasms. Contents of soluble sugar, starch, sucrose, NO3--N, and free amino acid were significantly higher in rhizomes of the YZ than those of the WY and AD (P < 0.05). The activities of glutamine synthetase (GS), glutamate dehydrogenase (GDH) and sucrose phosphate synthase (SPS) of the YZ were the highest among all three germplasm, with values of 17.73 A·g- 1 h- 1, 5.96 µmol·g- 1 min- 1, and 11.35 mg·g- 1 h- 1, respectively. Metabolomics analyses revealed that a total of 28 differentially expressed metabolites (DEMs) were up-regulated, and 25 DEMs were down-regulated in both comparison groups (AD vs. YZ group and WY vs. YZ group). Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway enrichment analysis demonstrated that metabolites related to histidine metabolism, tyrosine metabolism, tryptophan metabolism, and phenylalanine metabolism were associated with rhizomes carbon and nitrogen metabolism. CONCLUSIONS Overall, the results suggest that soluble sugar, starch, sucrose, NO3--N, and free amino acid in rhizome are important to and promote rhizome expansion in Kentucky bluegrass, while tryptamine, 3-methylhistidine, 3-indoleacetonitrile, indole, and histamine may be key metabolites in promoting carbon and nitrogen metabolism of rhizome.
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Affiliation(s)
- Fu Ran
- College of Grassland Science, Gansu Agricultural University, Lanzhou, 730070, China
| | - Yajuan Yuan
- College of Grassland Science, Gansu Agricultural University, Lanzhou, 730070, China
| | - Xiaoming Bai
- College of Grassland Science, Gansu Agricultural University, Lanzhou, 730070, China.
- Key Laboratory of Grassland Ecosystem, Gansu Agricultural University, Lanzhou, 730070, China.
| | - Changning Li
- College of Grassland Science, Gansu Agricultural University, Lanzhou, 730070, China
| | - Juanxia Li
- College of Grassland Science, Gansu Agricultural University, Lanzhou, 730070, China
| | - Hui Chen
- College of Grassland Science, Gansu Agricultural University, Lanzhou, 730070, China
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23
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Guan JC, Li C, Flint-Garcia S, Suzuki M, Wu S, Saunders JW, Dong L, Bouwmeester HJ, McCarty DR, Koch KE. Maize domestication phenotypes reveal strigolactone networks coordinating grain size evolution with kernel-bearing cupule architecture. THE PLANT CELL 2023; 35:1013-1037. [PMID: 36573016 PMCID: PMC10015167 DOI: 10.1093/plcell/koac370] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2022] [Accepted: 11/15/2022] [Indexed: 06/17/2023]
Abstract
The maize (Zea mays) ear represents one of the most striking domestication phenotypes in any crop species, with the cob conferring an exceptional yield advantage over the ancestral form of teosinte. Remodeling of the grain-bearing surface required profound developmental changes. However, the underlying mechanisms remain unclear and can only be partly attributed to the known domestication gene Teosinte glume architecture 1 (Tga1). Here we show that a more complete conversion involves strigolactones (SLs), and that these are prominent players not only in the Tga1 phenotype but also other domestication features of the ear and kernel. Genetic combinations of a teosinte tga1 allele with three SL-related mutants progressively enhanced ancestral morphologies. The SL mutants, in addition to modulating the tga1 phenotype, also reshaped kernel-bearing pedicels and cupules in a teosinte-like manner. Genetic and molecular evidence are consistent with SL regulation of TGA1, including direct interaction of TGA1 with components of the SL-signaling system shown here to mediate TGA1 availability by sequestration. Roles of the SL network extend to enhancing maize seed size and, importantly, coordinating increased kernel growth with remodeling of protective maternal tissues. Collectively, our data show that SLs have central roles in releasing kernels from restrictive maternal encasement and coordinating other factors that increase kernel size, physical support, and their exposure on the grain-bearing surface.
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Affiliation(s)
- Jiahn-Chou Guan
- Horticultural Sciences Department, University of Florida, Gainesville, Florida 32610, USA
- Plant Molecular and Cellular Biology Program, University of Florida, Gainesville, Florida 32610, USA
- Genetics Institute, University of Florida, Gainesville, Florida 32610, USA
| | - Changsheng Li
- Swammerdam Institute for Life Sciences, University of Amsterdam, Amsterdam 100 BE, The Netherlands
| | - Sherry Flint-Garcia
- United States Department of Agriculture – Agricultural Research Service, Columbia, Missouri 65211, USA
| | - Masaharu Suzuki
- Horticultural Sciences Department, University of Florida, Gainesville, Florida 32610, USA
- Plant Molecular and Cellular Biology Program, University of Florida, Gainesville, Florida 32610, USA
- Genetics Institute, University of Florida, Gainesville, Florida 32610, USA
| | - Shan Wu
- Horticultural Sciences Department, University of Florida, Gainesville, Florida 32610, USA
| | - Jonathan W Saunders
- Horticultural Sciences Department, University of Florida, Gainesville, Florida 32610, USA
| | - Lemeng Dong
- Swammerdam Institute for Life Sciences, University of Amsterdam, Amsterdam 100 BE, The Netherlands
| | - Harro J Bouwmeester
- Swammerdam Institute for Life Sciences, University of Amsterdam, Amsterdam 100 BE, The Netherlands
| | - Donald R McCarty
- Horticultural Sciences Department, University of Florida, Gainesville, Florida 32610, USA
- Plant Molecular and Cellular Biology Program, University of Florida, Gainesville, Florida 32610, USA
- Genetics Institute, University of Florida, Gainesville, Florida 32610, USA
| | - Karen E Koch
- Horticultural Sciences Department, University of Florida, Gainesville, Florida 32610, USA
- Plant Molecular and Cellular Biology Program, University of Florida, Gainesville, Florida 32610, USA
- Genetics Institute, University of Florida, Gainesville, Florida 32610, USA
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24
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Hellens AM, Chabikwa TG, Fichtner F, Brewer PB, Beveridge CA. Identification of new potential downstream transcriptional targets of the strigolactone pathway including glucosinolate biosynthesis. PLANT DIRECT 2023; 7:e486. [PMID: 36945724 PMCID: PMC10024969 DOI: 10.1002/pld3.486] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/06/2022] [Revised: 01/19/2023] [Accepted: 02/06/2023] [Indexed: 06/18/2023]
Abstract
Strigolactones regulate shoot branching and many aspects of plant growth, development, and allelopathy. Strigolactones are often discussed alongside auxin because they work together to inhibit shoot branching. However, the roles and mechanisms of strigolactones and how they act independently of auxin are still elusive. Additionally, there is still much in general to be discovered about the network of molecular regulators and their interactions in response to strigolactones. Here, we conducted an experiment in Arabidopsis with physiological treatments and strigolactone mutants to determine transcriptional pathways associated with strigolactones. The three physiological treatments included shoot tip removal with and without auxin treatment and treatment of intact plants with the auxin transport inhibitor, N-1-naphthylphthalamic acid (NPA). We identified the glucosinolate biosynthesis pathway as being upregulated across strigolactone mutants indicating strigolactone-glucosinolate crosstalk. Additionally, strigolactone application cannot restore the highly branched phenotype observed in glucosinolate biosynthesis mutants, placing glucosinolate biosynthesis downstream of strigolactone biosynthesis. Oxidative stress genes were enriched across the experiment suggesting that this process is mediated through multiple hormones. Here, we also provide evidence supporting non-auxin-mediated, negative feedback on strigolactone biosynthesis. Increases in strigolactone biosynthesis gene expression seen in strigolactone mutants could not be fully restored by auxin. By contrast, auxin could fully restore auxin-responsive gene expression increases, but not sugar signaling-related gene expression. Our data also point to alternative roles of the strigolactone biosynthesis genes and potential new signaling functions of strigolactone precursors. In this study, we identify a strigolactone-specific regulation of glucosinolate biosynthesis genes indicating that the two are linked and may work together in regulating stress and shoot ranching responses in Arabidopsis. Additionally, we provide evidence for non-auxinmediated feedback on strigolactone biosynthesis and discuss this in the context of sugar signaling.
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Affiliation(s)
- Alicia M. Hellens
- School of Biological SciencesUniversity of QueenslandSt. LuciaQueenslandAustralia
- ARC Centre for Plant Success in Nature and AgricultureThe University of QueenslandSt LuciaQueenslandAustralia
| | - Tinashe G. Chabikwa
- School of Biological SciencesUniversity of QueenslandSt. LuciaQueenslandAustralia
- QIMR Berghofer Medical Research InstituteBrisbaneQueenslandAustralia
| | - Franziska Fichtner
- School of Biological SciencesUniversity of QueenslandSt. LuciaQueenslandAustralia
- ARC Centre for Plant Success in Nature and AgricultureThe University of QueenslandSt LuciaQueenslandAustralia
- Institute for Plant BiochemistryHeinrich Heine UniversityDüsseldorfGermany
| | - Philip B. Brewer
- School of Biological SciencesUniversity of QueenslandSt. LuciaQueenslandAustralia
- ARC Centre for Plant Success in Nature and AgricultureThe University of QueenslandSt LuciaQueenslandAustralia
- School of Agriculture, Food and WineThe University of AdelaideGlen OsmondSouth AustraliaAustralia
| | - Christine A. Beveridge
- School of Biological SciencesUniversity of QueenslandSt. LuciaQueenslandAustralia
- ARC Centre for Plant Success in Nature and AgricultureThe University of QueenslandSt LuciaQueenslandAustralia
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25
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Genome-wide identification and expression analysis of anaphase promoting complex/cyclosome (APC/C) in rose. Int J Biol Macromol 2022; 223:1604-1618. [PMID: 36372105 DOI: 10.1016/j.ijbiomac.2022.11.085] [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: 08/26/2022] [Revised: 10/11/2022] [Accepted: 11/02/2022] [Indexed: 11/13/2022]
Abstract
The anaphase promoting complex/cyclosome (APC/C) is a large multi-subunit complex, regulating plant development and cell cycle. In plants, the APC/C gene family has been identified in Arabidopsis, rice, and maize. The APC/Cs in rose has not yet been reported. In this study, a total of 19 APC/C genes were identified in rose. Furthermore, we also investigated phylogenetic relationships, chromosomal distribution, gene structure, motif analysis, promoter sequence analysis and expression pattern of RhAPC/C genes. Synteny analysis indicated that AtAPC/Cs and RhAPC/Cs show a high degree of conservation. RhAPC/C promoters contains numerous cis-elements involved in plant morphogenesis, hormone response and stress response. Based on the transcription of RhAPC/Cs in different tissues and developmental stages, it appears that RhAPC/Cs may play a variety of roles in rose growth and development. RhAPC/Cs have limitations in the time and space during which they respond to hormones and abiotic stress. RhAPC5, RhAPC11d, RhAPC13a and RhAPC13c may play a role in rose responding to abiotic stress. The expression of RhAPC10 was altered by infection with fungal pathogen. Our study will serve as a basis for determining the functional role of APC/C genes in roses and help future research on woody plants.
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Belhassine F, Pallas B, Pierru-Bluy S, Martinez S, Fumey D, Costes E. A genotype-specific architectural and physiological profile is involved in the flowering regularity of apple trees. TREE PHYSIOLOGY 2022; 42:2306-2318. [PMID: 35951430 DOI: 10.1093/treephys/tpac073] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/11/2022] [Accepted: 06/28/2022] [Indexed: 06/15/2023]
Abstract
In polycarpic plants, meristem fate varies within individuals in a given year. In perennials, the proportion of floral induction (FI) in meristems also varies between consecutive years and among genotypes of a given species. Previous studies have suggested that FI of meristems could be determined by the within-plant competition for carbohydrates and by hormone signaling as key components of the flowering pathway. At the genotypic level, variability in FI was also associated with variability in architectural traits. However, the part of genotype-dependent variability in FI that can be explained by either tree architecture or tree physiology is still not fully understood. This study aimed at deciphering the respective effect of architectural and physiological traits on FI variability within apple trees by comparing six genotypes with contrasted architectures. Shoot type demography as well as the flowering and fruit production patterns were followed over 6 years and characterized by different indexes. Architectural morphotypes were then defined based on architectural traits using a clustering approach. For two successive years, non-structural starch content in leaf, stem and meristems, and hormonal contents (gibberellins, cytokinins, auxin and abscisic acid) in meristems were quantified and correlated to FI within-tree proportions. Based on a multi-step regression analysis, cytokinins and gibberellins content in meristem, starch content in leaves and the proportion of long shoots in tree annual growth were shown to contribute to FI. Although the predictive linear model of FI was common to all genotypes, each of the explicative variables had a different weight in FI determination, depending on the genotype. Our results therefore suggest both a common determination model and a genotype-specific architectural and physiological profile linked to its flowering behavior.
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Affiliation(s)
- Fares Belhassine
- AGAP Institut, University of Montpellier, CIRAD, INRAE, Institut Agro, TA A-108/01 Avenue d'Agropolis, 34398 Montpellier Cedex 5, France
- ITK, 34830, Clapiers, France
| | - Benoît Pallas
- AGAP Institut, University of Montpellier, CIRAD, INRAE, Institut Agro, TA A-108/01 Avenue d'Agropolis, 34398 Montpellier Cedex 5, France
| | - Sylvie Pierru-Bluy
- AGAP Institut, University of Montpellier, CIRAD, INRAE, Institut Agro, TA A-108/01 Avenue d'Agropolis, 34398 Montpellier Cedex 5, France
| | - Sébastien Martinez
- AGAP Institut, University of Montpellier, CIRAD, INRAE, Institut Agro, TA A-108/01 Avenue d'Agropolis, 34398 Montpellier Cedex 5, France
| | | | - Evelyne Costes
- AGAP Institut, University of Montpellier, CIRAD, INRAE, Institut Agro, TA A-108/01 Avenue d'Agropolis, 34398 Montpellier Cedex 5, France
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27
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Swiegers HW, Karpinska B, Hu Y, Dodd IC, Botha AM, Foyer CH. The Effects of High CO 2 and Strigolactones on Shoot Branching and Aphid-Plant Compatibility Control in Pea. Int J Mol Sci 2022; 23:12160. [PMID: 36293014 PMCID: PMC9602761 DOI: 10.3390/ijms232012160] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2022] [Revised: 09/22/2022] [Accepted: 09/28/2022] [Indexed: 07/30/2023] Open
Abstract
Elevated atmospheric CO2 concentrations (eCO2) regulate plant architecture and susceptibility to insects. We explored the mechanisms underpinning these responses in wild type (WT) peas and mutants defective in either strigolactone (SL) synthesis or signaling. All genotypes had increased shoot height and branching, dry weights and carbohydrate levels under eCO2, demonstrating that SLs are not required for shoot acclimation to eCO2. Since shoot levels of jasmonic acid (JA) and salicylic acid (SA) tended to be lower in SL signaling mutants than the WT under ambient conditions, we compared pea aphid performance on these lines under both CO2 conditions. Aphid fecundity was increased in the SL mutants compared to the WT under both ambient and eCO2 conditions. Aphid infestation significantly decreased levels of JA, isopentenyladenine, trans-zeatin and gibberellin A4 and increased ethylene precursor ACC, gibberellin A1, gibberellic acid (GA3) and SA accumulation in all lines. However, GA3 levels were increased less in the SL signaling mutants than the WT. These studies provide new insights into phytohormone responses in this specific aphid/host interaction and suggest that SLs and gibberellins are part of the network of phytohormones that participate in host susceptibility.
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Affiliation(s)
- Hendrik Willem Swiegers
- School of Biosciences, College of Life and Environmental Sciences, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK
- Department of Genetics, Stellenbosch University, Stellenbosch 7600, South Africa
- Centre for Plant Sciences, Faculty of Biological Sciences, University of Leeds, Leeds LS2 9JT, UK
| | - Barbara Karpinska
- School of Biosciences, College of Life and Environmental Sciences, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK
| | - Yan Hu
- School of Biosciences, College of Life and Environmental Sciences, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK
- Zhejiang Provincial Key Laboratory of Agricultural Resources and Environment, College of Environmental & Resource Science, Zhejiang University, Hangzhou 310058, China
| | - Ian C. Dodd
- Lancaster Environment Centre, Lancaster University, LEC Building, Lancaster LA1 4YQ, UK
| | - Anna-Maria Botha
- Department of Genetics, Stellenbosch University, Stellenbosch 7600, South Africa
| | - Christine H. Foyer
- School of Biosciences, College of Life and Environmental Sciences, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK
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Li L, Xie C, Zong J, Guo H, Li D, Liu J. Physiological and Comparative Transcriptome Analyses of the High-Tillering Mutant mtn1 Reveal Regulatory Mechanisms in the Tillering of Centipedegrass ( Eremochloa ophiuroides (Munro) Hack.). Int J Mol Sci 2022; 23:ijms231911580. [PMID: 36232880 PMCID: PMC9569434 DOI: 10.3390/ijms231911580] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2022] [Revised: 09/23/2022] [Accepted: 09/27/2022] [Indexed: 11/16/2022] Open
Abstract
Tillering is a key factor that determines the reproductive yields of centipedegrass, which is an important perennial warm-season turfgrass. However, the regulatory mechanism of tillering in perennial plants is poorly understood, especially in perennial turfgrasses. In this study, we created and characterised a cold plasma-mutagenised centipedegrass mutant, mtn1 (more tillering number 1). Phenotypic analysis showed that the mtn1 mutant exhibited high tillering, short internodes, long seeds and a heavy 1000-seed weight. Then, a comparative transcriptomic analysis of the mtn1 mutant and wild-type was performed to explore the molecular mechanisms of centipedegrass tillering. The results revealed that plant hormone signalling pathways, as well as starch and sucrose metabolism, might play important roles in centipedegrass tillering. Hormone and soluble sugar content measurements and exogenous treatment results validated that plant hormones and sugars play important roles in centipedegrass tiller development. In particular, the overexpression of the auxin transporter ATP-binding cassette B 11 (EoABCB11) in Arabidopsis resulted in more branches. Single nucleotide polymorphisms (SNPs) were also identified, which will provide a useful resource for molecular marker-assisted breeding in centipedegrass. According to the physiological characteristics and transcriptional expression levels of the related genes, the regulatory mechanism of centipedegrass tillering was systematically revealed. This research provides a new breeding resource for further studies into the molecular mechanism that regulates tillering in perennial plants and for breeding high-tillering centipedegrass varieties.
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Zolotareva D, Zazybin A, Belyankova Y, Dauletbakov A, Tursynbek S, Rafikova K, Ten A, Yu V, Bayazit S, Basharimova A, Aydemir M. Increasing Sugar Content in Source for Biofuel Production Using Agrochemical and Genetic Approaches at the Stages of BioMass Preharvesting and Harvesting. Molecules 2022; 27:molecules27165210. [PMID: 36014450 PMCID: PMC9416125 DOI: 10.3390/molecules27165210] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2022] [Revised: 08/04/2022] [Accepted: 08/05/2022] [Indexed: 11/18/2022] Open
Abstract
In order to optimize biofuel (including bioethanol) production processes, various problems need to be solved, such as increasing the sugar content of raw materials/biomass to gain a higher yield of the product. This task can be solved in several ways, with their own advantages and disadvantages, and an integrated approach, such as using a combination of ripening agents and phytohormones or application of a superabsorbent polymer with at least one sugar-enhancing agent, can be applied as well. Here, we reviewed several methods, including pre- and postharvest factors (light, temperature, partial replacement of potassium with magnesium, etc.), genetic modifications (traditional breeding, phytohormones, etc.), chemical ripening methods (Ethephon, Moddus, etc.), and some alternative methods (DMSO treatment, ionic liquids, etc.). The aim of this review was to provide a comprehensive, up-to-date summary of methods of increasing the carbohydrate level in plants/biomass for bioethanol production.
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Affiliation(s)
- Darya Zolotareva
- School of Chemical Engineering, Kazakh-British Technical University, Tole bi Street 59, Almaty 050000, Kazakhstan
- Department of Chemical and Biochemical Engineering, Institute of Oil and Gas Geology, Satbayev University, Almaty 050013, Kazakhstan
| | - Alexey Zazybin
- School of Chemical Engineering, Kazakh-British Technical University, Tole bi Street 59, Almaty 050000, Kazakhstan
- Department of Chemical and Biochemical Engineering, Institute of Oil and Gas Geology, Satbayev University, Almaty 050013, Kazakhstan
- Correspondence: ; Tel.: +7-705-293-0778
| | - Yelizaveta Belyankova
- School of Chemical Engineering, Kazakh-British Technical University, Tole bi Street 59, Almaty 050000, Kazakhstan
- Department of Chemical and Biochemical Engineering, Institute of Oil and Gas Geology, Satbayev University, Almaty 050013, Kazakhstan
| | - Anuar Dauletbakov
- School of Chemical Engineering, Kazakh-British Technical University, Tole bi Street 59, Almaty 050000, Kazakhstan
- Department of Chemical and Biochemical Engineering, Institute of Oil and Gas Geology, Satbayev University, Almaty 050013, Kazakhstan
| | - Saniya Tursynbek
- School of Chemical Engineering, Kazakh-British Technical University, Tole bi Street 59, Almaty 050000, Kazakhstan
| | - Khadichahan Rafikova
- Department of Chemical and Biochemical Engineering, Institute of Oil and Gas Geology, Satbayev University, Almaty 050013, Kazakhstan
| | - Assel Ten
- School of Chemical Engineering, Kazakh-British Technical University, Tole bi Street 59, Almaty 050000, Kazakhstan
- Laboratory of Synthetic and Natural Medicinal Compounds Chemistry, A. B. Bekturov Institute of Chemical Sciences, Sh. Ualikhanov, Almaty 050010, Kazakhstan
| | - Valentina Yu
- School of Chemical Engineering, Kazakh-British Technical University, Tole bi Street 59, Almaty 050000, Kazakhstan
- Laboratory of Synthetic and Natural Medicinal Compounds Chemistry, A. B. Bekturov Institute of Chemical Sciences, Sh. Ualikhanov, Almaty 050010, Kazakhstan
| | - Sarah Bayazit
- School of Chemical Engineering, Kazakh-British Technical University, Tole bi Street 59, Almaty 050000, Kazakhstan
| | - Anna Basharimova
- School of Chemical Engineering, Kazakh-British Technical University, Tole bi Street 59, Almaty 050000, Kazakhstan
| | - Murat Aydemir
- Department of Chemistry, Dicle University, Diyarbakır 21280, Turkey
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30
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Crespel L, Le Bras C, Amoroso T, Dubuc B, Citerne S, Perez-Garcia MD, Sakr S. Involvement of sugar and abscisic acid in the genotype-specific response of rose to far-red light. FRONTIERS IN PLANT SCIENCE 2022; 13:929029. [PMID: 35937351 PMCID: PMC9355296 DOI: 10.3389/fpls.2022.929029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/26/2022] [Accepted: 06/28/2022] [Indexed: 06/15/2023]
Abstract
Plant architecture determines yield (fruit or flowers) and product quality in many horticultural species. It results from growth and branching processes and is dependent on genetic and environmental factors such as light quality. Highly significant genotype and light quality effects and their interaction have been demonstrated on the architecture of rose. Far-red (FR) light is known for its favourable effect on plant growth and development. We evaluated the effect of FR on rose growth and development and its interaction with the genotype through architectural, eco-physiological (net photosynthesis rate) and biochemical (sugar and hormone concentrations) approaches. Two cultivars ('The Fairy' - TF - and Knock Out® Radrazz - KO) with contrasting architectures were grown in a climate chamber under FR or in the absence of FR at an average photosynthetic photon flux density (400-700 nm) of 181.7 ± 12.8 μmol m-2 s-1 for 16 h. A significant effect of FR on the architecture of TF was demonstrated, marked by greater stem elongation, shoot branching and flowering, while KO remained insensitive to FR, supporting a genotype x FR interaction. The response of TF to FR was associated with improved photosynthetic capabilities, while KO exhibited an elevated level of abscisic acid (ABA) in its leaves. FR-dependent ABA accumulation might inhibit photosynthesis and prevent the increased plant carbon status required for growth. From a practical perspective, these findings argue in favour of a better reasoning of the choice of the cultivars grown in lighted production systems. Further investigations will be necessary to better understand these genotype-specific responses to FR and to unravel their molecular determinants.
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Affiliation(s)
- Laurent Crespel
- Institut Agro, Université d’Angers, INRAE, IRHS, SFR 4207 QUASAV, Angers, France
| | - Camille Le Bras
- Institut Agro, Université d’Angers, INRAE, IRHS, SFR 4207 QUASAV, Angers, France
| | - Thomas Amoroso
- Institut Agro, Université d’Angers, INRAE, IRHS, SFR 4207 QUASAV, Angers, France
- ASTREDHOR, Institut des professionnels du végétal, Paris, France
| | - Bénédicte Dubuc
- Institut Agro, Université d’Angers, INRAE, IRHS, SFR 4207 QUASAV, Angers, France
| | - Sylvie Citerne
- Institut Jean-Pierre Bourgin, INRAE, AgroParisTech, Université Paris-Saclay, Versailles, France
| | | | - Soulaiman Sakr
- Institut Agro, Université d’Angers, INRAE, IRHS, SFR 4207 QUASAV, Angers, France
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31
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Morin A, Maurousset L, Vriet C, Lemoine R, Doidy J, Pourtau N. Carbon fluxes and environmental interactions during legume development, with a specific focus on Pisum sativum. PHYSIOLOGIA PLANTARUM 2022; 174:e13729. [PMID: 35662039 PMCID: PMC9328368 DOI: 10.1111/ppl.13729] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/17/2021] [Revised: 05/25/2022] [Accepted: 06/01/2022] [Indexed: 06/15/2023]
Abstract
Grain legumes are major food crops cultivated worldwide for their seeds with high nutritional content. To answer the growing concern about food safety and protein autonomy, legume cultivation must increase in the coming years. In parallel, current agricultural practices are facing environmental challenges, including global temperature increase and more frequent and severe episodes of drought stress. Crop yield directly relies on carbon allocation and is particularly affected by these global changes. We review the current knowledge on source-sink relationships and carbon resource allocation at all developmental stages, from germination to vegetative growth and seed production in grain legumes, focusing on pea (Pisum sativum). We also discuss how these source-sink relationships and carbon fluxes are influenced by biotic and abiotic factors. Major agronomic traits, including seed yield and quality, are particularly impacted by drought, temperatures, salinity, waterlogging, or pathogens and can be improved through the promotion of beneficial soil microorganisms or through optimized plant carbon resource allocation. Altogether, our review highlights the need for a better understanding of the cellular and molecular mechanisms regulating carbon fluxes from source leaves to sink organs, roots, and seeds. These advancements will further improve our understanding of yield stability and stress tolerance and contribute to the selection of climate-resilient crops.
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Affiliation(s)
- Amélie Morin
- Université de Poitiers, UMR CNRS 7267, EBI "Ecologie et Biologie des Interactions"PoitiersFrance
| | - Laurence Maurousset
- Université de Poitiers, UMR CNRS 7267, EBI "Ecologie et Biologie des Interactions"PoitiersFrance
| | - Cécile Vriet
- Université de Poitiers, UMR CNRS 7267, EBI "Ecologie et Biologie des Interactions"PoitiersFrance
| | - Rémi Lemoine
- Université de Poitiers, UMR CNRS 7267, EBI "Ecologie et Biologie des Interactions"PoitiersFrance
| | - Joan Doidy
- Université de Poitiers, UMR CNRS 7267, EBI "Ecologie et Biologie des Interactions"PoitiersFrance
| | - Nathalie Pourtau
- Université de Poitiers, UMR CNRS 7267, EBI "Ecologie et Biologie des Interactions"PoitiersFrance
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32
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Coupel‐Ledru A, Pallas B, Delalande M, Segura V, Guitton B, Muranty H, Durel C, Regnard J, Costes E. Tree architecture, light interception and water-use related traits are controlled by different genomic regions in an apple tree core collection. THE NEW PHYTOLOGIST 2022; 234:209-226. [PMID: 35023155 PMCID: PMC9305758 DOI: 10.1111/nph.17960] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/19/2021] [Accepted: 12/19/2021] [Indexed: 05/17/2023]
Abstract
Tree architecture shows large genotypic variability, but how this affects water-deficit responses is poorly understood. To assess the possibility of reaching ideotypes with adequate combinations of architectural and functional traits in the face of climate change, we combined high-throughput field phenotyping and genome-wide association studies (GWAS) on an apple tree (Malus domestica) core-collection. We used terrestrial light detection and ranging (T-LiDAR) scanning and airborne multispectral and thermal imagery to monitor tree architecture, canopy shape, light interception, vegetation indices and transpiration on 241 apple cultivars submitted to progressive field soil drying. GWAS was performed with single nucleotide polymorphism (SNP)-by-SNP and multi-SNP methods. Large phenotypic and genetic variability was observed for all traits examined within the collection, especially canopy surface temperature in both well-watered and water deficit conditions, suggesting control of water loss was largely genotype-dependent. Robust genomic associations revealed independent genetic control for the architectural and functional traits. Screening associated genomic regions revealed candidate genes involved in relevant pathways for each trait. We show that multiple allelic combinations exist for all studied traits within this collection. This opens promising avenues to jointly optimize tree architecture, light interception and water use in breeding strategies. Genotypes carrying favourable alleles depending on environmental scenarios and production objectives could thus be targeted.
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Affiliation(s)
- Aude Coupel‐Ledru
- AGAP InstitutUniv Montpellier, CIRAD, INRAE, Institut Agro34398MontpellierFrance
| | - Benoît Pallas
- AGAP InstitutUniv Montpellier, CIRAD, INRAE, Institut Agro34398MontpellierFrance
| | - Magalie Delalande
- AGAP InstitutUniv Montpellier, CIRAD, INRAE, Institut Agro34398MontpellierFrance
| | - Vincent Segura
- AGAP InstitutUniv Montpellier, CIRAD, INRAE, Institut Agro34398MontpellierFrance
| | - Baptiste Guitton
- AGAP InstitutUniv Montpellier, CIRAD, INRAE, Institut Agro34398MontpellierFrance
| | - Hélène Muranty
- IRHSSFR QuaSaVUniversité d’Angers, Institut Agro, INRAE49000AngersFrance
| | - Charles‐Eric Durel
- IRHSSFR QuaSaVUniversité d’Angers, Institut Agro, INRAE49000AngersFrance
| | - Jean‐Luc Regnard
- AGAP InstitutUniv Montpellier, CIRAD, INRAE, Institut Agro34398MontpellierFrance
| | - Evelyne Costes
- AGAP InstitutUniv Montpellier, CIRAD, INRAE, Institut Agro34398MontpellierFrance
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33
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Patil SB, Barbier FF, Zhao J, Zafar SA, Uzair M, Sun Y, Fang J, Perez-Garcia MD, Bertheloot J, Sakr S, Fichtner F, Chabikwa TG, Yuan S, Beveridge CA, Li X. Sucrose promotes D53 accumulation and tillering in rice. THE NEW PHYTOLOGIST 2022; 234:122-136. [PMID: 34716593 DOI: 10.1111/nph.17834] [Citation(s) in RCA: 35] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2021] [Accepted: 10/24/2021] [Indexed: 05/25/2023]
Abstract
Shoot branching is regulated by multiple signals. Previous studies have indicated that sucrose may promote shoot branching through suppressing the inhibitory effect of the hormone strigolactone (SL). However, the molecular mechanisms underlying this effect are unknown. Here, we used molecular and genetic tools to identify the molecular targets underlying the antagonistic interaction between sucrose and SL. We showed that sucrose antagonizes the suppressive action of SL on tillering in rice and on the degradation of D53, a major target of SL signalling. Sucrose inhibits the gene expression of D3, the orthologue of the Arabidopsis F-box MAX2 required for SL signalling. Overexpression of D3 antagonizes sucrose inhibition of D53 degradation and enables the SL inhibition of tillering under high sucrose. Sucrose prevents SL-induced degradation of D14, the SL receptor involved in D53 degradation. In contrast to D3, D14 overexpression enhances D53 protein levels and sucrose-induced tillering, even in the presence of SL. Our results show that sucrose inhibits SL response by affecting key components of SL signalling and, together with previous studies reporting the inhibition of SL synthesis by nitrate and phosphate, demonstrate the central role played by SLs in the regulation of plant architecture by nutrients.
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Affiliation(s)
- Suyash B Patil
- National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing,, 100081, China
| | - Francois F Barbier
- 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
| | - Jinfeng Zhao
- National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing,, 100081, China
| | - Syed A Zafar
- National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing,, 100081, China
| | - Muhammad Uzair
- National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing,, 100081, China
| | - Yinglu Sun
- National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing,, 100081, China
| | - Jingjing Fang
- National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing,, 100081, China
| | | | - Jessica Bertheloot
- INRAE, IRHS, SFR 4207 QUASAV, Institut Agro, Université d'Angers, Angers, 49000, France
| | - Soulaiman Sakr
- INRAE, IRHS, SFR 4207 QUASAV, Institut Agro, Université d'Angers, Angers, 49000, France
| | - 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
| | - Tinashe G Chabikwa
- School of Biological Sciences, The University of Queensland, St Lucia, QLD, 4072, Australia
| | | | - 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
| | - Xueyong Li
- National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing,, 100081, China
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34
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Luo Y, Zhang M, Liu Y, Liu J, Li W, Chen G, Peng Y, Jin M, Wei W, Jian L, Yan J, Fernie AR, Yan J. Genetic variation in YIGE1 contributes to ear length and grain yield in maize. THE NEW PHYTOLOGIST 2022; 234:513-526. [PMID: 34837389 DOI: 10.1111/nph.17882] [Citation(s) in RCA: 33] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2021] [Accepted: 11/18/2021] [Indexed: 05/12/2023]
Abstract
Ear length (EL), which is controlled by quantitative trait loci (QTLs), is an important component of grain yield and as such is a key target trait in maize breeding. However, very few EL QTLs have been cloned, and their molecular mechanisms are largely unknown. Here, using a genome wide association study (GWAS), we identified a QTL, YIGE1, which encodes an unknown protein that regulates EL by affecting pistillate floret number. Overexpression of YIGE1 increased female inflorescence meristem (IM) size, increased EL and kernel number per row (KNPR), and thus enhanced grain yield. By contrast, CRISPR/Cas9 knockout and Mutator insertion mutant lines of YIGE1 displayed decreased IM size and EL. A single-nucleotide polymorphism (SNP) located in the regulatory region of YIGE1 had a large effect on its promoter strength, which positively affected EL by increasing gene expression. Further analysis shows that YIGE1 may be involved in sugar and auxin signal pathways to regulate maize ear development, thus affecting IM activity and floret production in maize inflorescence morphogenesis. These findings provide new insights into ear development and will ultimately facilitate maize molecular breeding.
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Affiliation(s)
- Yun Luo
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, 430070, China
| | - Mingliang Zhang
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, 430070, China
| | - Yu Liu
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, 430070, China
| | - Jie Liu
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, 430070, China
- Wisconsin Institutes for Discovery, University of Wisconsin-Madison, Madison, WI, 53715, USA
| | - Wenqiang Li
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, 430070, China
| | - Gengshen Chen
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, 430070, China
| | - Yong Peng
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, 430070, China
| | - Min Jin
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, 430070, China
| | - Wenjie Wei
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, 430070, China
| | - Liumei Jian
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, 430070, China
| | - Jin Yan
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, 430070, China
| | - Alisdair R Fernie
- Department of Molecular Physiology, Max-Planck-Institute of Molecular Plant Physiology, Am Mühlenberg 1, Potsdam-Golm, 14476, Germany
| | - Jianbing Yan
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, 430070, China
- Hubei Hongshan Laboratory, Wuhan, 430070, China
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35
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Finlayson SA. Branching's sweet spot: strigolactone signaling mediates sucrose effects on bud outgrowth. THE NEW PHYTOLOGIST 2022; 234:7-9. [PMID: 35171510 DOI: 10.1111/nph.18000] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/19/2022] [Accepted: 01/27/2022] [Indexed: 06/14/2023]
Affiliation(s)
- Scott A Finlayson
- Department of Soil and Crop Sciences, Texas A&M University, College Station, TX, 77843, USA
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36
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Wang M, Ogé L, Pérez Garcia MD, Launay-Avon A, Clément G, Le Gourrierec J, Hamama L, Sakr S. Antagonistic Effect of Sucrose Availability and Auxin on Rosa Axillary Bud Metabolism and Signaling, Based on the Transcriptomics and Metabolomics Analysis. FRONTIERS IN PLANT SCIENCE 2022; 13:830840. [PMID: 35392520 PMCID: PMC8982072 DOI: 10.3389/fpls.2022.830840] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/07/2021] [Accepted: 02/02/2022] [Indexed: 06/14/2023]
Abstract
Shoot branching is crucial for successful plant development and plant response to environmental factors. Extensive investigations have revealed the involvement of an intricate regulatory network including hormones and sugars. Recent studies have demonstrated that two major systemic regulators-auxin and sugar-antagonistically regulate plant branching. However, little is known regarding the molecular mechanisms involved in this crosstalk. We carried out two complementary untargeted approaches-RNA-seq and metabolomics-on explant stem buds fed with different concentrations of auxin and sucrose resulting in dormant and non-dormant buds. Buds responded to the combined effect of auxin and sugar by massive reprogramming of the transcriptome and metabolome. The antagonistic effect of sucrose and auxin targeted several important physiological processes, including sink strength, the amino acid metabolism, the sulfate metabolism, ribosome biogenesis, the nucleic acid metabolism, and phytohormone signaling. Further experiments revealed a role of the TOR-kinase signaling pathway in bud outgrowth through at least downregulation of Rosa hybrida BRANCHED1 (RhBRC1). These new findings represent a cornerstone to further investigate the diverse molecular mechanisms that drive the integration of endogenous factors during shoot branching.
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Affiliation(s)
- Ming Wang
- Dryland-Technology Key Laboratory of Shandong Province, College of Agronomy, Qingdao Agricultural University, Qingdao, China
- Institut Agro, University of Angers INRAE, IRHS, SFR QUASAV, Angers, France
| | - Laurent Ogé
- Institut Agro, University of Angers INRAE, IRHS, SFR QUASAV, Angers, France
| | | | - Alexandra Launay-Avon
- Institute of Plant Sciences Paris-Saclay (IPS2), CNRS, INRA, Université Paris-Sud, Université d’Evry, Université Paris-Saclay, Gif-sur-Yvette, France
| | - Gilles Clément
- Institut Jean-Pierre Bourgin, INRA, AgroParisTech, CNRS, Université Paris-Saclay, Versailles, France
| | - Jose Le Gourrierec
- Institut Agro, University of Angers INRAE, IRHS, SFR QUASAV, Angers, France
| | - Latifa Hamama
- Institut Agro, University of Angers INRAE, IRHS, SFR QUASAV, Angers, France
| | - Soulaiman Sakr
- Institut Agro, University of Angers INRAE, IRHS, SFR QUASAV, Angers, France
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37
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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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Cieslak M, Owens A, Prusinkiewicz P. Computational Models of Auxin-Driven Patterning in Shoots. Cold Spring Harb Perspect Biol 2022; 14:a040097. [PMID: 34001531 PMCID: PMC8886983 DOI: 10.1101/cshperspect.a040097] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
Auxin regulates many aspects of plant development and behavior, including the initiation of new outgrowth, patterning of vascular systems, control of branching, and responses to the environment. Computational models have complemented experimental studies of these processes. We review these models from two perspectives. First, we consider cellular and tissue-level models of interaction between auxin and its transporters in shoots. These models form a coherent body of results exploring different hypotheses pertinent to the patterning of new outgrowth and vascular strands. Second, we consider models operating at the level of plant organs and entire plants. We highlight techniques used to reduce the complexity of these models, which provide a path to capturing the essence of studied phenomena while running simulations efficiently.
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Affiliation(s)
- Mikolaj Cieslak
- Department of Computer Science, University of Calgary, Calgary, Alberta T2N 1N4, Canada
| | - Andrew Owens
- Department of Computer Science, University of Calgary, Calgary, Alberta T2N 1N4, Canada
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Wang L, Gao J, Wang C, Xu Y, Li X, Yang J, Chen K, Kang Y, Wang Y, Cao P, Xie X. Comprehensive Analysis of Long Non-coding RNA Modulates Axillary Bud Development in Tobacco ( Nicotiana tabacum L.). FRONTIERS IN PLANT SCIENCE 2022; 13:809435. [PMID: 35237286 PMCID: PMC8884251 DOI: 10.3389/fpls.2022.809435] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/05/2021] [Accepted: 01/06/2022] [Indexed: 06/14/2023]
Abstract
Long non-coding RNAs (lncRNAs) regulate gene expression and are crucial for plant growth and development. However, the mechanisms underlying the effects of activated lncRNAs on axillary bud development remain largely unknown. By lncRNA transcriptomes of axillary buds in topped and untopped tobacco plants, we identified a total of 13,694 lncRNAs. LncRNA analysis indicated that the promoted growth of axillary bud by topping might be partially ascribed to the genes related to hormone signal transduction and glycometabolism, trans-regulated by differentially expressed lncRNAs, such as MSTRG.52498.1, MSTRG.60026.1, MSTRG.17770.1, and MSTRG.32431.1. Metabolite profiling indicated that auxin, abscisic acid and gibberellin were decreased in axillary buds of topped tobacco lines, while cytokinin was increased, consistent with the expression levels of related lncRNAs. MSTRG.52498.1, MSTRG.60026.1, MSTRG.17770.1, and MSTRG.32431.1 were shown to be influenced by hormones and sucrose treatments, and were associated with changes of axillary bud growth in the overexpression of NtCCD8 plants (with reduced axillary buds) and RNA interference of NtTB1 plants (with increased axillary buds). Moreover, MSTRG.28151.1 was identified as the antisense lncRNA of NtTB1. Silencing of MSTRG.28151.1 in tobacco significantly attenuated the expression of NtTB1 and resulted in larger axillary buds, suggesting the vital function of MSTRG.28151.1 axillary bud developmen by NtTB1. Our findings shed light on lncRNA-mRNA interactions and their functional roles in axillary bud growth, which would improve our understanding of lncRNAs as important regulators of axillary bud development and plant architecture.
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Affiliation(s)
- Lin Wang
- China Tobacco Gene Research Center, Zhengzhou Tobacco Research Institute of China National Tobacco Corporation (CNTC), Zhengzhou, China
| | - Junping Gao
- China Tobacco Hunan Industrial Co., Ltd., Changsha, China
| | - Chen Wang
- China Tobacco Gene Research Center, Zhengzhou Tobacco Research Institute of China National Tobacco Corporation (CNTC), Zhengzhou, China
| | - Yalong Xu
- China Tobacco Gene Research Center, Zhengzhou Tobacco Research Institute of China National Tobacco Corporation (CNTC), Zhengzhou, China
| | - Xiaoxu Li
- China Tobacco Hunan Industrial Co., Ltd., Changsha, China
| | - Jun Yang
- China Tobacco Gene Research Center, Zhengzhou Tobacco Research Institute of China National Tobacco Corporation (CNTC), Zhengzhou, China
| | - Kai Chen
- China Tobacco Hunan Industrial Co., Ltd., Changsha, China
| | - Yile Kang
- China Tobacco Gene Research Center, Zhengzhou Tobacco Research Institute of China National Tobacco Corporation (CNTC), Zhengzhou, China
| | - Yaofu Wang
- China Tobacco Hunan Industrial Co., Ltd., Changsha, China
| | - Peijian Cao
- China Tobacco Gene Research Center, Zhengzhou Tobacco Research Institute of China National Tobacco Corporation (CNTC), Zhengzhou, China
| | - Xiaodong Xie
- China Tobacco Gene Research Center, Zhengzhou Tobacco Research Institute of China National Tobacco Corporation (CNTC), Zhengzhou, China
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Ma J, Xie L, Zhao Q, Sun Y, Zhang D. Cyclanilide Induces Lateral Bud Outgrowth by Modulating Cytokinin Biosynthesis and Signalling Pathways in Apple Identified via Transcriptome Analysis. Int J Mol Sci 2022; 23:ijms23020581. [PMID: 35054767 PMCID: PMC8776233 DOI: 10.3390/ijms23020581] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2021] [Revised: 12/31/2021] [Accepted: 01/03/2022] [Indexed: 02/04/2023] Open
Abstract
Cyclanilide (CYC), a plant growth regulator, is a potent shoot branching agent in apple. However, its mechanism remains unclear. The current study revealed that CYC treatment resulted in massive reprogramming of the axillary bud transcriptome, implicating several hormones in the response. We observed a marked increase (approximately 2-fold) in the level of zeatin riboside and a significant decrease (approximately 2-fold) in the level of abscisic acid (ABA). Zeatin metabolism gene cytokinin (CTK) oxidase 1 (CKX 1) was down-regulated at 168 h after CYC treatment compared with the control. Weighted gene co-expression network analysis of differentially expressed genes demonstrated the turquoise module clusters exhibited the highest positive correlation with zeatin riboside (r = 0.92) and the highest negative correlation with ABA (r = -0.8). A total of 37 genes were significantly enriched in the plant hormone signal transduction pathway in the turquoise module. Among them, the expressions of CTK receptor genes WOODEN LEG and the CTK type-A response regulators genes ARR3 and ARR9 were up-regulated. ABA signal response genes protein phosphatase 2C genes ABI2 and ABI5 were down-regulated in lateral buds after CYC treatment at 168 h. In addition, exogenous application of 6-benzylaminopurine (6-BA, a synthetic type of CTK) and CYC enhanced the inducing effect of CYC, whereas exogenous application of lovastatin (a synthetic type of inhibitor of CTK biosynthesis) or ABA and CYC weakened the promoting effect of CYC. These results collectively revealed that the stimulation of bud growth by CYC might involve CTK biosynthesis and signalling, including genes CKX1 and ARR3/9, which provided a direction for further study of the branching promoting mechanism of CYC.
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Affiliation(s)
| | | | | | | | - Dong Zhang
- Correspondence: ; Tel./Fax: +86-029-87082849
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Mishra BS, Sharma M, Laxmi A. Role of sugar and auxin crosstalk in plant growth and development. PHYSIOLOGIA PLANTARUM 2022; 174:e13546. [PMID: 34480799 DOI: 10.1111/ppl.13546] [Citation(s) in RCA: 46] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/29/2021] [Revised: 08/27/2021] [Accepted: 08/30/2021] [Indexed: 05/07/2023]
Abstract
Under the natural environment, nutrient signals interact with phytohormones to coordinate and reprogram plant growth and survival. Sugars are important molecules that control almost all morphological and physiological processes in plants, ranging from seed germination to senescence. In addition to their functions as energy resources, osmoregulation, storage molecules, and structural components, sugars function as signaling molecules and interact with various plant signaling pathways, such as hormones, stress, and light to modulate growth and development according to fluctuating environmental conditions. Auxin, being an important phytohormone, is associated with almost all stages of the plant's life cycle and also plays a vital role in response to the dynamic environment for better growth and survival. In the previous years, substantial progress has been made that showed a range of common responses mediated by sugars and auxin signaling. This review discusses how sugar signaling affects auxin at various levels from its biosynthesis to perception and downstream gene activation. On the same note, the review also highlights the role of auxin signaling in fine-tuning sugar metabolism and carbon partitioning. Furthermore, we discussed the crosstalk between the two signaling machineries in the regulation of various biological processes, such as gene expression, cell cycle, development, root system architecture, and shoot growth. In conclusion, the review emphasized the role of sugar and auxin crosstalk in the regulation of several agriculturally important traits. Thus, engineering of sugar and auxin signaling pathways could potentially provide new avenues to manipulate for agricultural purposes.
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Affiliation(s)
- Bhuwaneshwar Sharan Mishra
- National Institute of Plant Genome Research, New Delhi, India
- Bhuwaneshwar Sharan Mishra, Ram Gulam Rai P. G. College Banktashiv, Affiliated to Deen Dayal Upadhyaya Gorakhpur University Gorakhpur, Deoria, Uttar Pradesh, India
| | - Mohan Sharma
- National Institute of Plant Genome Research, New Delhi, India
| | - Ashverya Laxmi
- National Institute of Plant Genome Research, New Delhi, India
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Khuvung K, Silva Gutierrez FAO, Reinhardt D. How Strigolactone Shapes Shoot Architecture. FRONTIERS IN PLANT SCIENCE 2022; 13:889045. [PMID: 35903239 PMCID: PMC9315439 DOI: 10.3389/fpls.2022.889045] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/03/2022] [Accepted: 06/10/2022] [Indexed: 05/21/2023]
Abstract
Despite its central role in the control of plant architecture, strigolactone has been recognized as a phytohormone only 15 years ago. Together with auxin, it regulates shoot branching in response to genetically encoded programs, as well as environmental cues. A central determinant of shoot architecture is apical dominance, i.e., the tendency of the main shoot apex to inhibit the outgrowth of axillary buds. Hence, the execution of apical dominance requires long-distance communication between the shoot apex and all axillary meristems. While the role of strigolactone and auxin in apical dominance appears to be conserved among flowering plants, the mechanisms involved in bud activation may be more divergent, and include not only hormonal pathways but also sugar signaling. Here, we discuss how spatial aspects of SL biosynthesis, transport, and sensing may relate to apical dominance, and we consider the mechanisms acting locally in axillary buds during dormancy and bud activation.
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Choudhary A, Kumar A, Kaur N, Kaur H. Molecular cues of sugar signaling in plants. PHYSIOLOGIA PLANTARUM 2022; 174:e13630. [PMID: 35049040 DOI: 10.1111/ppl.13630] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/21/2021] [Revised: 01/02/2022] [Accepted: 01/14/2022] [Indexed: 06/14/2023]
Abstract
Sugars, the chemically bound form of energy, are formed by the absorption of photosynthetically active radiation and fixation in plants. During evolution, plants availed the sugar molecules as a resource, balancing molecule, and signaling molecule. The multifaceted role of sugar molecules in response to environmental stimuli makes it the central coordinator required for growth, survival, and continuity. During the course of evolution, the molecular networks have become complex to adapt or acclimate to the changing environment. Sugar molecules are sensed both intra and extracellularly by their specific sensors. The signal is transmitted by a signaling loop that involves various downstream signaling molecules, transcriptional factors and, most pertinent, the sensors TOR and SnRK1. In this review, the focus has been retained on the significance of the sugar sensors during signaling and induced modules to regulate plant growth, development, biotic and abiotic stress. It is interesting to visualize the sugar molecule as a signaling unit and not only a nutrient. Complete information on the downstream components of sugar signaling will open the gates for improving the qualitative and quantitative elements of crop plants.
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Affiliation(s)
- Anuj Choudhary
- Department of Botany, College of Basic Sciences and Humanities, Punjab Agricultural University, Ludhiana, Punjab, India
| | - Antul Kumar
- Department of Botany, College of Basic Sciences and Humanities, Punjab Agricultural University, Ludhiana, Punjab, India
| | - Nirmaljit Kaur
- Department of Botany, College of Basic Sciences and Humanities, Punjab Agricultural University, Ludhiana, Punjab, India
| | - Harmanjot Kaur
- Department of Botany, College of Basic Sciences and Humanities, Punjab Agricultural University, Ludhiana, Punjab, India
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44
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Wang L, Dang QL. Growth and photosynthetic traits differ between shoots originated from axillary buds or from adventitious buds in Populus balsamifera L. cuttings. PHYSIOLOGIA PLANTARUM 2022; 174:e13599. [PMID: 34796965 DOI: 10.1111/ppl.13599] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/26/2021] [Revised: 11/07/2021] [Accepted: 11/14/2021] [Indexed: 06/13/2023]
Abstract
Bud development influences shoot branching and the plasticity and adaptability of plants. To explore the differences of post-embryonic development of different types of buds, shoots originated from adventitious buds and axillary buds of cuttings in two populations of balsam poplar (Populus balsamifera L.) were investigated for differences in leaf morphology, photosynthetic and growth characteristics, and the effects of a carbonic anhydrase (CA) inhibitor on CA activity, photosynthesis and mesophyll conductance (gm ). The results showed that axillary buds produced ovate first few leaves and longer shoots while adventitious buds produced lanceolate first few leaves with higher specific leaf area (SLA). There were no significant differences in leaf area-based photosynthetic rate (An ), maximum carboxylation rate (Vcmax ), and maximum electron transport rate (Jmax ) between shoots originated from the two bud types. Based on the principal component analysis, shoots of adventitious bud origin grouped on daytime respiration and SLA, while cuttings from axillary buds clustered toward the opposite direction of quantum yield and light saturation point. Shoots originated from different types of buds had different growth rates and biomass, but the direction of the differences varied with the population of the mother tree. The two populations differed in An , gm , and relationships between CA, An , and gm . There were differences in post-embryonic growth traits of shoots from axillary buds and those from adventitious buds, which may be an adaptive strategy for regeneration under different light conditions.
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Affiliation(s)
- Lei Wang
- Faculty of Natural Resources Management, Lakehead University, Thunder Bay, Ontario, Canada
- College of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang, Jiangsu, China
| | - Qing-Lai Dang
- Faculty of Natural Resources Management, Lakehead University, Thunder Bay, Ontario, Canada
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45
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Wang JY, Alseekh S, Xiao T, Ablazov A, Perez de Souza L, Fiorilli V, Anggarani M, Lin PY, Votta C, Novero M, Jamil M, Lanfranco L, Hsing YIC, Blilou I, Fernie AR, Al-Babili S. Multi-omics approaches explain the growth-promoting effect of the apocarotenoid growth regulator zaxinone in rice. Commun Biol 2021; 4:1222. [PMID: 34697384 PMCID: PMC8545949 DOI: 10.1038/s42003-021-02740-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2021] [Accepted: 09/24/2021] [Indexed: 11/19/2022] Open
Abstract
The apocarotenoid zaxinone promotes growth and suppresses strigolactone biosynthesis in rice. To shed light on the mechanisms underlying its growth-promoting effect, we employed a combined omics approach integrating transcriptomics and metabolomics analysis of rice seedlings treated with zaxinone, and determined the resulting changes at the cellular and hormonal levels. Metabolites as well as transcripts analysis demonstrate that zaxinone application increased sugar content and triggered glycolysis, the tricarboxylic acid cycle and other sugar-related metabolic processes in rice roots. In addition, zaxinone treatment led to an increased root starch content and induced glycosylation of cytokinins. The transcriptomic, metabolic and hormonal changes were accompanied by striking alterations of roots at cellular level, which showed an increase in apex length, diameter, and the number of cells and cortex cell layers. Remarkably, zaxinone did not affect the metabolism of roots in a strigolactone deficient mutant, suggesting an essential role of strigolactone in the zaxinone growth-promoting activity. Taken together, our results unravel zaxinone as a global regulator of the transcriptome and metabolome, as well as of hormonal and cellular composition of rice roots. Moreover, they suggest that zaxinone promotes rice growth most likely by increasing sugar uptake and metabolism, and reinforce the potential of this compound in increasing rice performance. Wang et al. report zaxinone as a global regulator of the transcriptome and metabolome, as well as of hormonal and cellular composition of rice roots. This study shows that zaxinone promotes rice growth by enhancing root sugar uptake and metabolism and modulation of cytokinin content, indicating the potential application of this compound in increasing rice performance.
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Affiliation(s)
- Jian You Wang
- The BioActives Lab, Center for Desert Agriculture (CDA), Biological and Environment Science and Engineering (BESE), King Abdullah University of Science and Technology, Thuwal, 23955-6900, Saudi Arabia
| | - Saleh Alseekh
- Max-Planck-Institute of Molecular Plant Physiology, Am Mühlenberg 1, 14476, Potsdam-Golm, Germany.,Center of Plant Systems Biology and Biotechnology, 4000, Plovdiv, Bulgaria
| | - Tingting Xiao
- The Laboratory of Plant Cell and Developmental Biology (LPCDB), Biological and Environment Science and Engineering (BESE), King Abdullah University of Science and Technology, Thuwal, 23955-6900, Saudi Arabia
| | - Abdugaffor Ablazov
- The BioActives Lab, Center for Desert Agriculture (CDA), Biological and Environment Science and Engineering (BESE), King Abdullah University of Science and Technology, Thuwal, 23955-6900, Saudi Arabia
| | - Leonardo Perez de Souza
- Max-Planck-Institute of Molecular Plant Physiology, Am Mühlenberg 1, 14476, Potsdam-Golm, Germany
| | - Valentina Fiorilli
- Department of Life Sciences and Systems Biology, University of Turin, Turin, Italy
| | - Marita Anggarani
- Institute of Plant and Microbial Biology, Academia Sinica, No. 128, Section 2, Yien-Chu-Yuan Road, Taipei, 11529, Taiwan
| | - Pei-Yu Lin
- The BioActives Lab, Center for Desert Agriculture (CDA), Biological and Environment Science and Engineering (BESE), King Abdullah University of Science and Technology, Thuwal, 23955-6900, Saudi Arabia
| | - Cristina Votta
- Department of Life Sciences and Systems Biology, University of Turin, Turin, Italy
| | - Mara Novero
- Department of Life Sciences and Systems Biology, University of Turin, Turin, Italy
| | - Muhammad Jamil
- The BioActives Lab, Center for Desert Agriculture (CDA), Biological and Environment Science and Engineering (BESE), King Abdullah University of Science and Technology, Thuwal, 23955-6900, Saudi Arabia
| | - Luisa Lanfranco
- Department of Life Sciences and Systems Biology, University of Turin, Turin, Italy
| | - Yue-Ie C Hsing
- Institute of Plant and Microbial Biology, Academia Sinica, No. 128, Section 2, Yien-Chu-Yuan Road, Taipei, 11529, Taiwan
| | - Ikram Blilou
- The Laboratory of Plant Cell and Developmental Biology (LPCDB), Biological and Environment Science and Engineering (BESE), King Abdullah University of Science and Technology, Thuwal, 23955-6900, Saudi Arabia
| | - Alisdair R Fernie
- Max-Planck-Institute of Molecular Plant Physiology, Am Mühlenberg 1, 14476, Potsdam-Golm, Germany
| | - Salim Al-Babili
- The BioActives Lab, Center for Desert Agriculture (CDA), Biological and Environment Science and Engineering (BESE), King Abdullah University of Science and Technology, Thuwal, 23955-6900, Saudi Arabia.
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46
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Gendron JM, Leung CC, Liu W. Energy as a seasonal signal for growth and reproduction. CURRENT OPINION IN PLANT BIOLOGY 2021; 63:102092. [PMID: 34461431 DOI: 10.1016/j.pbi.2021.102092] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/23/2021] [Revised: 06/23/2021] [Accepted: 06/30/2021] [Indexed: 06/13/2023]
Abstract
Plants measure photoperiod as a predictable signal for seasonal change. Recently, new connections between photoperiod measuring systems and metabolism in plants have been revealed. These studies explore historical observations of metabolism and photoperiod with modern tools and approaches, suggesting there is much more to learn about photoperiodism in plants.
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Affiliation(s)
- Joshua M Gendron
- Department of Molecular, Cellular, and Developmental Biology, Yale University, New Haven, CT, 06511, USA.
| | - Chun Chung Leung
- Department of Molecular, Cellular, and Developmental Biology, Yale University, New Haven, CT, 06511, USA
| | - Wei Liu
- Department of Molecular, Cellular, and Developmental Biology, Yale University, New Haven, CT, 06511, USA
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Zhou J, Ma F, Yao Y, Deng M, Chen M, Zhang S, Li Y, Yang J, Zhang N, Huang J, Sun Q, Sun J. Jujube witches' broom phytoplasma effectors SJP1 and SJP2 induce lateral bud outgrowth by repressing the ZjBRC1-controlled auxin efflux channel. PLANT, CELL & ENVIRONMENT 2021; 44:3257-3272. [PMID: 34189742 DOI: 10.1111/pce.14141] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2021] [Revised: 06/24/2021] [Accepted: 06/25/2021] [Indexed: 06/13/2023]
Abstract
Comprehensively controlling phytoplasma-associated jujube witches' broom (JWB) disease is extremely challenging for the jujube industry. Although the pathogenesis of phytoplasma disease has been highlighted in many plant species, the release of lateral buds from dormancy under JWB phytoplasma infection has not been characterized in woody perennial jujube. Here, two 16SrV-B group phytoplasma effectors, SJP1 and SJP2, were experimentally determined to induce witches' broom with increased lateral branches. In vivo interaction and subcellular localization analyses showed that both SJP1 and SJP2 were translocated from the cytoplasm to the nucleus to target the CYC/TB1-TCP transcription factor ZjBRC1. The N- and C-terminal coiled-coil domains of SJP1 and SJP2 were required for the TCP-binding ability. ZjBRC1 bound directly to the auxin efflux carrier ZjPIN1c/3 promoters and down-regulated their expression to promote the accumulation of endogenous auxin indole-3-acetic acid in jujube calli. Furthermore, JWB phytoplasma infection suppressed ZjBRC1 accumulation and induced ZjPIN1c/3 expression to stimulate lateral bud outgrowth. Therefore, SJP1 and SJP2 stimulate lateral bud outgrowth, at least partly, by repressing the ZjBRC1-controlled auxin efflux channel in jujube, representing a potential strategy for comprehensive phytoplasma-associated disease control and a resource for gene editing breeding to create new cultivars with varying degrees of shoot branching.
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Affiliation(s)
- Junyong Zhou
- College of Horticulture, Anhui Agricultural University, Hefei City, China
- Horticulture Research Institute, Anhui Academy of Agricultural Sciences, Hefei City, China
| | - Fuli Ma
- College of Horticulture, Anhui Agricultural University, Hefei City, China
| | - Yu Yao
- College of Horticulture, Anhui Agricultural University, Hefei City, China
| | - Mingsheng Deng
- College of Horticulture, Anhui Agricultural University, Hefei City, China
| | - Mengting Chen
- College of Horticulture, Anhui Agricultural University, Hefei City, China
- State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, Hefei City, China
| | - Shanqi Zhang
- College of Horticulture, Anhui Agricultural University, Hefei City, China
| | - Yamei Li
- College of Horticulture, Anhui Agricultural University, Hefei City, China
| | - Jian Yang
- College of Horticulture, Anhui Agricultural University, Hefei City, China
- State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, Hefei City, China
| | - Ning Zhang
- College of Horticulture, Anhui Agricultural University, Hefei City, China
| | - Jingqiu Huang
- College of Horticulture, Anhui Agricultural University, Hefei City, China
- State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, Hefei City, China
| | - Qibao Sun
- Horticulture Research Institute, Anhui Academy of Agricultural Sciences, Hefei City, China
| | - Jun Sun
- College of Horticulture, Anhui Agricultural University, Hefei City, China
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48
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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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Fichtner F, Lunn JE. The Role of Trehalose 6-Phosphate (Tre6P) in Plant Metabolism and Development. ANNUAL REVIEW OF PLANT BIOLOGY 2021; 72:737-760. [PMID: 33428475 DOI: 10.1146/annurev-arplant-050718-095929] [Citation(s) in RCA: 106] [Impact Index Per Article: 35.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
Trehalose 6-phosphate (Tre6P) has a dual function as a signal and homeostatic regulator of sucrose levels in plants. In source leaves, Tre6P regulates the production of sucrose to balance supply with demand for sucrose from growing sink organs. As a signal of sucrose availability, Tre6P influences developmental decisions that will affect future demand for sucrose, such as flowering, embryogenesis, and shoot branching, and links the growth of sink organs to sucrose supply. This involves complex interactions with SUCROSE-NON-FERMENTING1-RELATED KINASE1 that are not yet fully understood. Tre6P synthase, the enzyme that makes Tre6P, plays a key role in the nexus between sucrose and Tre6P, operating in the phloem-loading zone of leaves and potentially generating systemic signals for source-sink coordination. Many plants have large and diverse families of Tre6P phosphatase enzymes that dephosphorylate Tre6P, some of which have noncatalytic functions in plant development.
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Affiliation(s)
- Franziska Fichtner
- School of Biological Sciences, The University of Queensland, St. Lucia, Queensland 4072, Australia;
| | - John Edward Lunn
- Max Planck Institute of Molecular Plant Physiology, 14476 Potsdam-Golm, Germany;
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Porcher A, Guérin V, Leduc N, Lebrec A, Lothier J, Vian A. Ascorbate-glutathione pathways mediated by cytokinin regulate H2O2 levels in light-controlled rose bud burst. PLANT PHYSIOLOGY 2021; 186:910-928. [PMID: 33711160 PMCID: PMC8195510 DOI: 10.1093/plphys/kiab123] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2020] [Accepted: 02/22/2021] [Indexed: 05/10/2023]
Abstract
Rosebush (Rosa "Radrazz") plants are an excellent model to study light control of bud outgrowth since bud outgrowth only arises in the presence of light and never occurs in darkness. Recently, we demonstrated high levels of hydrogen peroxide (H2O2) present in the quiescent axillary buds strongly repress the outgrowth process. In light, the outgrowing process occurred after H2O2 scavenging through the promotion of Ascorbic acid-Glutathione (AsA-GSH)-dependent pathways and the continuous decrease in H2O2 production. Here we showed Respiratory Burst Oxidase Homologs expression decreased in buds during the outgrowth process in light. In continuous darkness, the same decrease was observed although H2O2 remained at high levels in axillary buds, as a consequence of the strong inhibition of AsA-GSH cycle and GSH synthesis preventing the outgrowth process. Cytokinin (CK) application can evoke bud outgrowth in light as well as in continuous darkness. Furthermore, CKs are the initial targets of light in the photocontrol process. We showed CK application to cultured buds in darkness decreases bud H2O2 to a level that is similar to that observed in light. Furthermore, this treatment restores GSH levels and engages bud burst. We treated plants with buthionine sulfoximine, an inhibitor of GSH synthesis, to solve the sequence of events involving H2O2/GSH metabolisms in the photocontrol process. This treatment prevented bud burst, even in the presence of CK, suggesting the sequence of actions starts with the positive CK effect on GSH that in turn stimulates H2O2 scavenging, resulting in initiation of bud outgrowth.
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Affiliation(s)
- Alexis Porcher
- Institut Agro, University of Angers INRAE, IRHS, SFR QUASAV, F-49000 Angers, France
| | - Vincent Guérin
- Institut Agro, University of Angers INRAE, IRHS, SFR QUASAV, F-49000 Angers, France
| | - Nathalie Leduc
- Institut Agro, University of Angers INRAE, IRHS, SFR QUASAV, F-49000 Angers, France
| | - Anita Lebrec
- Institut Agro, University of Angers INRAE, IRHS, SFR QUASAV, F-49000 Angers, France
| | - Jérémy Lothier
- Institut Agro, University of Angers INRAE, IRHS, SFR QUASAV, F-49000 Angers, France
| | - Alain Vian
- Institut Agro, University of Angers INRAE, IRHS, SFR QUASAV, F-49000 Angers, France
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