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Martirena-Ramírez A, Serrano-Gamboa JG, Pérez-Llano Y, Zenteno-Alegría CO, Iza-Arteaga ML, Del Rayo Sánchez-Carbente M, Fernández-Ocaña AM, Batista-García RA, Folch-Mallol JL. Aspergillus brasiliensis E_15.1: A Novel Thermophilic Endophyte from a Volcanic Crater Unveiled through Comprehensive Genome-Wide, Phenotypic Analysis, and Plant Growth-Promoting Trails. J Fungi (Basel) 2024; 10:517. [PMID: 39194843 DOI: 10.3390/jof10080517] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2024] [Revised: 07/19/2024] [Accepted: 07/23/2024] [Indexed: 08/29/2024] Open
Abstract
Thermophilic fungi have been seldom studied despite the fact that they can contribute to understanding ecological mechanisms of adaptation in diverse environments and have attractive toolboxes with a wide range of biotechnological applications. This work describes for the first time an endophytic and thermophilic strain of Aspergillus brasiliensis that was isolated in the crater of the active volcano "El Chichonal" in Mexico. This strain was capable of surviving in soil with a temperature of 60 °C and a pH of neutral acidity, which preluded a high thermostability and a potential in industrial application. The complete genome of A. brasiliensis E_15.1 was sequenced and assembled in 37 Mb of genomic DNA. We performed a comprehensive phylogenomic analysis for the precise taxonomic identification of this species as a novel strain of Aspergillus brasiliensis. Likewise, the predicted coding sequences were classified according to various functions including Carbohydrate-Active Enzymes (CAZymes), biosynthetic gene clusters of secondary metabolites (BGCs), and metabolic pathways associated with plant growth promotion. A. brasiliensis E_15.1 was found to degrade chitin, chitooligosaccharides, xylan, and cellulose. The genes to biosynthesize clavaric acid (a triterpene with antitumor activity) were found, thus probably having antitumor activity. In addition to the genomic analysis, a set of enzymatic assays confirmed the thermostability of extracellular xylanases and cellulases of A. brasiliensis E_15.1. The enzymatic repertoire of A. brasiliensis E_15.1 suggests that A. brasiliensis E_15.1 has a high potential for industrial application due to its thermostability and can promote plant growth at high temperatures. Finally, this strain constitutes an interesting source of terpenoids with pharmacological activity.
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Affiliation(s)
- Amanda Martirena-Ramírez
- Centro de Investigación en Biotecnología, Universidad Autónoma del Estado de Morelos, Cuernavaca 62209, Morelos, Mexico
| | - José Germán Serrano-Gamboa
- Centro de Investigación en Biotecnología, Universidad Autónoma del Estado de Morelos, Cuernavaca 62209, Morelos, Mexico
| | - Yordanis Pérez-Llano
- Centro de Ciencias Genómicas, Universidad Autónoma del Estado de Morelos, Cuernavaca 62209, Morelos, Mexico
| | - Claribel Orquídea Zenteno-Alegría
- Centro de Investigación en Dinámica Celular, Instituto de Investigación en Ciencias Básicas y Aplicadas, Universidad Autónoma del Estado de Morelos, Cuernavaca 62209, Morelos, Mexico
- Facultad de Ciencias Químicas e Ingeniería, Universidad Autónoma del Estado de Morelos, Cuernavaca 62209, Morelos, Mexico
| | - Mario León Iza-Arteaga
- Centro de Investigación en Biotecnología, Universidad Autónoma del Estado de Morelos, Cuernavaca 62209, Morelos, Mexico
| | | | - Ana María Fernández-Ocaña
- Departamento de Biología Animal, Biología Vegetal y Ecología, Facultad de Ciencias Experimentales, Universidad de Jaén, 23071 Jaén, Spain
| | - Ramón Alberto Batista-García
- Centro de Investigación en Dinámica Celular, Instituto de Investigación en Ciencias Básicas y Aplicadas, Universidad Autónoma del Estado de Morelos, Cuernavaca 62209, Morelos, Mexico
- Departamento de Biología Animal, Biología Vegetal y Ecología, Facultad de Ciencias Experimentales, Universidad de Jaén, 23071 Jaén, Spain
| | - Jorge Luis Folch-Mallol
- Centro de Investigación en Biotecnología, Universidad Autónoma del Estado de Morelos, Cuernavaca 62209, Morelos, Mexico
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Balouri C, Poulios S, Tsompani D, Spyropoulou Z, Ketikoglou MC, Kaldis A, Doonan JH, Vlachonasios KE. Gibberellin Signaling through RGA Suppresses GCN5 Effects on Arabidopsis Developmental Stages. Int J Mol Sci 2024; 25:6757. [PMID: 38928464 PMCID: PMC11203840 DOI: 10.3390/ijms25126757] [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: 05/22/2024] [Revised: 06/10/2024] [Accepted: 06/12/2024] [Indexed: 06/28/2024] Open
Abstract
Histone acetyltransferases (HATs) modify the amino-terminal tails of the core histone proteins via acetylation, regulating chromatin structure and transcription. GENERAL CONTROL NON-DEREPRESSIBLE 5 (GCN5) is a HAT that specifically acetylates H3K14 residues. GCN5 has been associated with cell division and differentiation, meristem function, root, stem, foliar, and floral development, and plant environmental response. The flowers of gcn5 plants display a reduced stamen length and exhibit male sterility relative to the wild-type plants. We show that these effects may arise from gibberellin (GA)-signaling defects. The signaling pathway of bioactive GAs depends on the proteolysis of their repressors, DELLA proteins. The repressor GA (RGA) DELLA protein represses plant growth, inflorescence, and flower and seed development. Our molecular data indicate that GCN5 is required for the activation and H3K14 acetylation of genes involved in the late stages of GA biosynthesis and catabolism. We studied the genetic interaction of the RGA and GCN5; the RGA can partially suppress GCN5 action during the whole plant life cycle. The reduced elongation of the stamen filament of gcn5-6 mutants is reversed in the rga-t2;gcn5-6 double mutants. RGAs suppress the GCN5 effect on the gene expression and histone acetylation of GA catabolism and GA signaling. Interestingly, the RGA and RGL2 do not suppress ADA2b function, suggesting that ADA2b acts downstream of GA signaling and is distinct from GCN5 activity. In conclusion, we propose that the action of GCN5 on stamen elongation is partially mediated by RGA and GA signaling.
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Affiliation(s)
- Christina Balouri
- Department of Botany, School of Biology, Faculty of Sciences, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece; (C.B.); (S.P.); (D.T.); (A.K.)
| | - Stylianos Poulios
- Department of Botany, School of Biology, Faculty of Sciences, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece; (C.B.); (S.P.); (D.T.); (A.K.)
| | - Dimitra Tsompani
- Department of Botany, School of Biology, Faculty of Sciences, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece; (C.B.); (S.P.); (D.T.); (A.K.)
| | - Zoe Spyropoulou
- Department of Botany, School of Biology, Faculty of Sciences, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece; (C.B.); (S.P.); (D.T.); (A.K.)
| | - Maria-Christina Ketikoglou
- Department of Botany, School of Biology, Faculty of Sciences, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece; (C.B.); (S.P.); (D.T.); (A.K.)
| | - Athanasios Kaldis
- Department of Botany, School of Biology, Faculty of Sciences, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece; (C.B.); (S.P.); (D.T.); (A.K.)
| | - John H. Doonan
- National Plant Phenomics Centre, Institute of Biological, Environmental, and Rural Sciences, Aberystwyth University, Gogerddan Campus, Aberystwyth SY23 3EE, UK;
| | - Konstantinos E. Vlachonasios
- Department of Botany, School of Biology, Faculty of Sciences, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece; (C.B.); (S.P.); (D.T.); (A.K.)
- Natural Products Research Centre of Excellence (NatPro-AUTh), Center of Interdisciplinary Research and Innovation of Aristotle University of Thessaloniki (CIRI-AUTh), 54124 Thessaloniki, Greece
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3
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Zheng Z, Li W, Ding Y, Wu Y, Jiang Q, Wang Y. Integrative transcriptome analysis uncovers common components containing CPS2 regulated by maize lncRNA GARR2 in gibberellin response. PLANTA 2024; 259:146. [PMID: 38713242 DOI: 10.1007/s00425-024-04425-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2024] [Accepted: 04/26/2024] [Indexed: 05/08/2024]
Abstract
MAIN CONCLUSION The combined transcriptome outcome provides an important clue to the regulatory cascade centering on lncRNA GARR2 and CPS2 gene in GA response. Long non-coding RNAs (lncRNAs) serve as regulatory components in transcriptional hierarchy governing multiple aspects of biological processes. Dissecting regulatory mechanisms underpinning tetracyclic diterpenoid gibberellin (GA) cascade holds both theoretical and applied significance. However, roles of lncRNAs in transcriptional modulation of GA pathway remain largely elusive. Gypsy retrotransposon-derived GIBBERELLIN RESPONSIVE lncRNA2 (GARR2) has been reported as GA-responsive maize lncRNA. Here a novel GARR2-edited line garr2-1 was identified, characteristic of GA-induced phenotype of increased seedling height and elongated leaf sheath. Transcriptome analysis indicated that transcriptional abundance of five genes [ent-copalyl diphosphate synthase2 (CPS2), ent-kaurene synthase4 (KS4), ent-kaurene synthase6 (KS6), ent-kaurene oxidase2 (KO2), and ent-kaurenoic acid oxidase1/Dwarf3 (KAO1/D3)] was elevated in garr2-1 for early steps of GA biosynthesis. Five GA biosynthetic genes as hub regulators were interlaced to shape regulatory network of GA response. Different transcriptome resources were integrated to discover common differentially expressed genes (DEGs) in the independent GARR2-edited lines GARR2KO and garr2-1. A total of 320 common DEGs were retrieved. These common DEGs were enriched in diterpenoid biosynthetic pathway. Integrative transcriptome analysis revealed the common CPS2 encoding the CPS enzyme that catalyzes the conversion of the precursor trans-geranylgeranyl diphosphate to ent-copalyl diphosphate. The up-regulated CPS2 supported the GA-induced phenotype of slender seedlings observed in the independent GARR2-edited lines GARR2KO and garr2-1. Our integrative transcriptome analysis uncovers common components of the GA pathway regulated by lncRNA GARR2. These common components, especially for the GA biosynthetic gene CPS2, provide a valuable resource for further delineating the underlying mechanisms of lncRNA GARR2 in GA response.
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Affiliation(s)
- Zhongtian Zheng
- Jiangsu Key Laboratory of Crop Genomics and Molecular Breeding/Key Laboratory of Plant Functional Genomics of the Ministry of Education/Jiangsu Key Laboratory of Crop Genetics and Physiology, Agricultural College of Yangzhou University, Yangzhou, 225009, China
- Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops, Yangzhou University, Yangzhou, 225009, China
| | - Wei Li
- Jiangsu Key Laboratory of Crop Genomics and Molecular Breeding/Key Laboratory of Plant Functional Genomics of the Ministry of Education/Jiangsu Key Laboratory of Crop Genetics and Physiology, Agricultural College of Yangzhou University, Yangzhou, 225009, China
- Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops, Yangzhou University, Yangzhou, 225009, China
| | - Yuhang Ding
- Jiangsu Key Laboratory of Crop Genomics and Molecular Breeding/Key Laboratory of Plant Functional Genomics of the Ministry of Education/Jiangsu Key Laboratory of Crop Genetics and Physiology, Agricultural College of Yangzhou University, Yangzhou, 225009, China
- Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops, Yangzhou University, Yangzhou, 225009, China
| | - Yinting Wu
- Jiangsu Key Laboratory of Crop Genomics and Molecular Breeding/Key Laboratory of Plant Functional Genomics of the Ministry of Education/Jiangsu Key Laboratory of Crop Genetics and Physiology, Agricultural College of Yangzhou University, Yangzhou, 225009, China
- Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops, Yangzhou University, Yangzhou, 225009, China
| | - Qinyue Jiang
- Jiangsu Key Laboratory of Crop Genomics and Molecular Breeding/Key Laboratory of Plant Functional Genomics of the Ministry of Education/Jiangsu Key Laboratory of Crop Genetics and Physiology, Agricultural College of Yangzhou University, Yangzhou, 225009, China
- Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops, Yangzhou University, Yangzhou, 225009, China
| | - Yijun Wang
- Jiangsu Key Laboratory of Crop Genomics and Molecular Breeding/Key Laboratory of Plant Functional Genomics of the Ministry of Education/Jiangsu Key Laboratory of Crop Genetics and Physiology, Agricultural College of Yangzhou University, Yangzhou, 225009, China.
- Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops, Yangzhou University, Yangzhou, 225009, China.
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4
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Boucher JJ, Ireland HS, Wang R, David KM, Schaffer RJ. The genetic control of herkogamy. FUNCTIONAL PLANT BIOLOGY : FPB 2024; 51:FP23315. [PMID: 38687848 DOI: 10.1071/fp23315] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2023] [Accepted: 04/14/2024] [Indexed: 05/02/2024]
Abstract
Herkogamy is the spatial separation of anthers and stigmas within complete flowers, and is a key floral trait that promotes outcrossing in many angiosperms. The degree of separation between pollen-producing anthers and receptive stigmas has been shown to influence rates of self-pollination amongst plants, with a reduction in herkogamy increasing rates of successful selfing in self-compatible species. Self-pollination is becoming a critical issue in horticultural crops grown in environments where biotic pollinators are limited, absent, or difficult to utilise. In these cases, poor pollination results in reduced yield and misshapen fruit. Whilst there is a growing body of work elucidating the genetic basis of floral organ development, the genetic and environmental control points regulating herkogamy are poorly understood. A better understanding of the developmental and regulatory pathways involved in establishing varying degrees of herkogamy is needed to provide insights into the production of flowers more adept at selfing to produce consistent, high-quality fruit. This review presents our current understanding of herkogamy from a genetics and hormonal perspective.
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Affiliation(s)
- Jacques-Joseph Boucher
- The New Zealand Institute for Plant and Food Research Ltd, 55 Old Mill Road, Motueka 7198, New Zealand; and School of Biological Sciences, The University of Auckland, Private Bag 92019, Auckland 1142, New Zealand
| | - Hilary S Ireland
- The New Zealand Institute for Plant and Food Research Ltd, Private Bag 92196, Auckland 1142, New Zealand
| | - Ruiling Wang
- The New Zealand Institute for Plant and Food Research Ltd, Private Bag 92196, Auckland 1142, New Zealand
| | - Karine M David
- School of Biological Sciences, The University of Auckland, Private Bag 92019, Auckland 1142, New Zealand
| | - Robert J Schaffer
- The New Zealand Institute for Plant and Food Research Ltd, 55 Old Mill Road, Motueka 7198, New Zealand; and School of Biological Sciences, The University of Auckland, Private Bag 92019, Auckland 1142, New Zealand
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5
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Ortolan F, Trenz TS, Delaix CL, Lazzarotto F, Margis-Pinheiro M. bHLH-regulated routes in anther development in rice and Arabidopsis. Genet Mol Biol 2024; 46:e20230171. [PMID: 38372977 PMCID: PMC10875983 DOI: 10.1590/1678-4685-gmb-2023-0171] [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: 06/07/2023] [Accepted: 01/05/2024] [Indexed: 02/20/2024] Open
Abstract
Anther development is a complex process essential for plant reproduction and crop yields. In recent years, significant progress has been made in the identification and characterization of the bHLH transcription factor family involved in anther regulation in rice and Arabidopsis, two extensively studied model plants. Research on bHLH transcription factors has unveiled their crucial function in controlling tapetum development, pollen wall formation, and other anther-specific processes. By exploring deeper into regulatory mechanisms governing anther development and bHLH transcription factors, we can gain important insights into plant reproduction, thereby accelerating crop yield improvement and the development of new plant breeding strategies. This review provides an overview of the current knowledge on anther development in rice and Arabidopsis, emphasizing the critical roles played by bHLH transcription factors in this process. Recent advances in gene expression analysis and functional studies are highlighted, as they have significantly enhanced our understanding of the regulatory networks involved in anther development.
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Affiliation(s)
- Francieli Ortolan
- Universidade Federal do Rio Grande do Sul, Programa de Pós-Graduação
em Genética e Biologia Molecular, Departamento de Genética, Porto Alegre, RS,
Brazil
| | - Thomaz Stumpf Trenz
- Universidade Federal do Rio Grande do Sul, Programa de Pós-Graduação
em Genética e Biologia Molecular, Departamento de Genética, Porto Alegre, RS,
Brazil
- Universidade Federal do Rio Grande do Sul, Centro de Biotecnologia,
Programa de Pós-Graduação em Biologia Celular e Molecular, Porto Alegre, RS,
Brazil
| | - Camila Luiza Delaix
- Universidade Federal do Rio Grande do Sul, Centro de Biotecnologia,
Programa de Pós-Graduação em Biologia Celular e Molecular, Porto Alegre, RS,
Brazil
| | - Fernanda Lazzarotto
- Universidade Federal do Rio Grande do Sul, Programa de Pós-Graduação
em Genética e Biologia Molecular, Departamento de Genética, Porto Alegre, RS,
Brazil
- Universidade Federal do Rio Grande do Sul, Centro de Biotecnologia,
Programa de Pós-Graduação em Biologia Celular e Molecular, Porto Alegre, RS,
Brazil
| | - Marcia Margis-Pinheiro
- Universidade Federal do Rio Grande do Sul, Programa de Pós-Graduação
em Genética e Biologia Molecular, Departamento de Genética, Porto Alegre, RS,
Brazil
- Universidade Federal do Rio Grande do Sul, Centro de Biotecnologia,
Programa de Pós-Graduação em Biologia Celular e Molecular, Porto Alegre, RS,
Brazil
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Li Y, Zhao M, Cai K, Liu L, Han R, Pei X, Zhang L, Zhao X. Phytohormone biosynthesis and transcriptional analyses provide insight into the main growth stage of male and female cones Pinus koraiensis. FRONTIERS IN PLANT SCIENCE 2023; 14:1273409. [PMID: 37885661 PMCID: PMC10598626 DOI: 10.3389/fpls.2023.1273409] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/12/2023] [Accepted: 09/26/2023] [Indexed: 10/28/2023]
Abstract
The cone is a crucial component of the whole life cycle of gymnosperm and an organ for sexual reproduction of gymnosperms. In Pinus koraiensis, the quantity and development process of male and female cones directly influence seed production, which in turn influences the tree's economic value. There are, however, due to the lack of genetic information and genomic data, the morphological development and molecular mechanism of female and male cones of P. koraiensis have not been analyzed. Long-term phenological observations were used in this study to document the main process of the growth of both male and female cones. Transcriptome sequencing and endogenous hormone levels at three critical developmental stages were then analyzed to identify the regulatory networks that control these stages of cones development. The most significant plant hormones influencing male and female cones growth were discovered to be gibberellin and brassinosteroids, according to measurements of endogenous hormone content. Additionally, transcriptome sequencing allowed the identification of 71,097 and 31,195 DEGs in male and female cones. The synthesis and control of plant hormones during cones growth were discovered via enrichment analysis of key enrichment pathways. FT and other flowering-related genes were discovered in the coexpression network of flower growth development, which contributed to the growth development of male and female cones of P. koraiensis. The findings of this work offer a cutting-edge foundation for understanding reproductive biology and the molecular mechanisms that control the growth development of male and female cones in P. koraiensis.
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Affiliation(s)
- Yan Li
- Jilin Provincial Key Laboratory of Tree and Grass Genetics and Breeding, College of Forestry and Grassland Science, Jilin Agricultural University, Changchun, China
- College of Life Science, Jilin Agricultural University, Changchun, China
| | - Minghui Zhao
- Jilin Provincial Key Laboratory of Tree and Grass Genetics and Breeding, College of Forestry and Grassland Science, Jilin Agricultural University, Changchun, China
| | - Kewei Cai
- Jilin Provincial Key Laboratory of Tree and Grass Genetics and Breeding, College of Forestry and Grassland Science, Jilin Agricultural University, Changchun, China
| | - Lin Liu
- Jilin Provincial Key Laboratory of Tree and Grass Genetics and Breeding, College of Forestry and Grassland Science, Jilin Agricultural University, Changchun, China
| | - Rui Han
- Jilin Provincial Key Laboratory of Tree and Grass Genetics and Breeding, College of Forestry and Grassland Science, Jilin Agricultural University, Changchun, China
| | - Xiaona Pei
- College of Horticulture, Jilin Agricultural University, Changchun, China
| | - Lina Zhang
- School of Information Technology, Jilin Agricultural University, Changchun, China
| | - Xiyang Zhao
- Jilin Provincial Key Laboratory of Tree and Grass Genetics and Breeding, College of Forestry and Grassland Science, Jilin Agricultural University, Changchun, China
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7
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Hsieh KT, Wu CC, Lee SJ, Chen YH, Shiue SY, Liao YC, Liu SH, Wang IW, Tseng CS, Li WH, Wang CS, Chen LJ. Rice GA3ox1 modulates pollen starch granule accumulation and pollen wall development. PLoS One 2023; 18:e0292400. [PMID: 37812600 PMCID: PMC10561864 DOI: 10.1371/journal.pone.0292400] [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: 08/12/2023] [Accepted: 09/19/2023] [Indexed: 10/11/2023] Open
Abstract
The rice GA biosynthetic gene OsGA3ox1 has been proposed to regulate pollen development through the gametophytic manner, but cellular characterization of its mutant pollen is lacking. In this study, three heterozygotic biallelic variants, "-3/-19", "-3/-2" and "-3/-10", each containing one null and one 3bp-deletion allele, were obtained by the CRISPR/Cas9 technique for the functional study of OsGA3ox1. The three homozygotes, "-19/-19", "-2/-2" and "-10/-10", derived from heterozygotic variants, did not affect the development of most vegetative and floral organs but showed a significant reduction in seed-setting rate and in pollen viability. Anatomic characterizations of these mutated osga3ox1 pollens revealed defects in starch granule accumulation and pollen wall development. Additional molecular characterization suggests that abnormal pollen development in the osga3ox1 mutants might be linked to the regulation of transcription factors OsGAMYB, OsTDR and OsbHLH142 during late pollen development. In brief, the rice GA3ox1 is a crucial gene that modulates pollen starch granule accumulation and pollen wall development at the gametophytic phase.
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Affiliation(s)
- Kun-Ting Hsieh
- Institute of Molecular Biology, National Chung Hsing University, Taichung, Taiwan
- Biodiversity Research Center, Academia Sinica, Taipei, Taiwan
| | - Chi-Chih Wu
- Biodiversity Research Center, Academia Sinica, Taipei, Taiwan
| | - Shih-Jie Lee
- Institute of Molecular Biology, National Chung Hsing University, Taichung, Taiwan
| | - Yu-Heng Chen
- Institute of Molecular Biology, National Chung Hsing University, Taichung, Taiwan
| | - Shiau-Yu Shiue
- Institute of Molecular Biology, National Chung Hsing University, Taichung, Taiwan
| | - Yi-Chun Liao
- Institute of Molecular Biology, National Chung Hsing University, Taichung, Taiwan
| | - Su-Hui Liu
- Institute of Molecular Biology, National Chung Hsing University, Taichung, Taiwan
| | - I.-Wen Wang
- Division of Biotechnology, Taiwan Agriculture Research Institute, Taichung, Taiwan
| | - Ching-Shan Tseng
- Division of Biotechnology, Taiwan Agriculture Research Institute, Taichung, Taiwan
| | - Wen-Hsiung Li
- Biodiversity Research Center, Academia Sinica, Taipei, Taiwan
- Department of Ecology and Evolution, University of Chicago, Chicago, Illinois, United States of America
| | - Chang-Sheng Wang
- Department of Agronomy, National Chung Hsing University, Taichung, Taiwan
- Innovation Center for Agricultural Biotechnology, National Chung Hsing University, Taichung, Taiwan
| | - Liang-Jwu Chen
- Institute of Molecular Biology, National Chung Hsing University, Taichung, Taiwan
- Innovation Center for Agricultural Biotechnology, National Chung Hsing University, Taichung, Taiwan
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8
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Rodriguez-Furlan C, Borna R, Betz O. RAB7 GTPases as coordinators of plant endomembrane traffic. FRONTIERS IN PLANT SCIENCE 2023; 14:1240973. [PMID: 37662169 PMCID: PMC10470000 DOI: 10.3389/fpls.2023.1240973] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Accepted: 08/01/2023] [Indexed: 09/05/2023]
Abstract
The ras gene from rat brain (RAB) family of small GTPases is highly conserved among eukaryotes and regulates endomembrane trafficking pathways. RAB7, in particular, has been linked to various processes involved in regulating endocytic and autophagic pathways. Plants have several copies of RAB7 proteins that reflect the intricacy of their endomembrane transport systems. RAB7 activity regulates different pathways of endomembrane trafficking in plants: (1) endocytic traffic to the vacuole; (2) biosynthetic traffic to the vacuole; and (3) recycling from the late endosome to the secretory pathway. During certain developmental and stress related processes another pathway becomes activated (4) autophagic trafficking towards the vacuole that is also regulated by RAB7. RAB7s carry out these functions by interacting with various effector proteins. Current research reveals many unexplored RAB7 functions in connection with stress responses. Thus, this review describes a comprehensive summary of current knowledge of plant RAB7's functions, discusses unresolved challenges, and recommends prospective future research directions.
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9
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Zhang C, Liu X, Liu Y, Yu J, Yao G, Yang H, Yang D, Wu Y. An integrated transcriptome and metabolome analysis reveals the gene network regulating flower development in Pogostemon cablin. FRONTIERS IN PLANT SCIENCE 2023; 14:1201486. [PMID: 37457333 PMCID: PMC10340533 DOI: 10.3389/fpls.2023.1201486] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/06/2023] [Accepted: 06/09/2023] [Indexed: 07/18/2023]
Abstract
Pogostemon cablin is a well-known protected species widely used in medicine and spices, however the underlying molecular mechanisms and metabolite dynamics of P. cablin flower development remain unclear due to the difficulty in achieving flowering in this species. A comparison of the transcriptome and widely targeted metabolome during P. cablin flower development was first performed in this study. Results showed that a total of 13,469 differentially expressed unigenes (DEGs) and 371 differentially accumulated metabolites (DAMs) were identified. Transcriptomic analysis revealed that the DEGs were associated with starch and sucrose metabolism, terpenoid biosynthesis and phenylpropanoid biosynthesis. Among these DEGs, 75 MIKC-MADS unigenes were associated with the development of floral organs. Gibberellins (GAs), auxin, and aging signaling might form a cross-regulatory network to regulate flower development in P. cablin. According to the metabolic profile, the predominant DAMs were amino acids, flavonoids, terpenes, phenols, and their derivatives. The accumulation patterns of these predominant DAMs were closely associated with the flower developmental stage. The integration analysis of DEGs and DAMs indicated that phenylpropanoids, flavonoids, and amino acids might be accumulated due to the activation of starch and sucrose metabolism. Our results provide some important insights for elucidating the reproductive process, floral organ, and color formation of P. cablin flowers at the molecular level. These results will improve our understanding of the molecular and genetic mechanisms involved in the floral development of P. cablin.
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Affiliation(s)
- Chan Zhang
- Sanya Nanfan Research Institute of Hainan University, College of Tropical Crops, Hainan University, Sanya, China
- Guangdong VTR BioTech Co., Ltd., Zhuhai, China
| | - Xiaofeng Liu
- Sanya Nanfan Research Institute of Hainan University, College of Tropical Crops, Hainan University, Sanya, China
| | - Ya Liu
- Sanya Nanfan Research Institute of Hainan University, College of Tropical Crops, Hainan University, Sanya, China
| | - Jing Yu
- Sanya Nanfan Research Institute of Hainan University, College of Tropical Crops, Hainan University, Sanya, China
| | - Guanglong Yao
- Sanya Nanfan Research Institute of Hainan University, College of Tropical Crops, Hainan University, Sanya, China
| | - Huageng Yang
- Sanya Nanfan Research Institute of Hainan University, College of Tropical Crops, Hainan University, Sanya, China
| | - Dongmei Yang
- Sanya Nanfan Research Institute of Hainan University, College of Tropical Crops, Hainan University, Sanya, China
| | - Yougen Wu
- Sanya Nanfan Research Institute of Hainan University, College of Tropical Crops, Hainan University, Sanya, China
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10
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Ogrodowicz P, Wojciechowicz MK, Kuczyńska A, Krajewski P, Kempa M. The Effects of Growth Modification on Pollen Development in Spring Barley ( Hordeum vulgare L.) Genotypes with Contrasting Drought Tolerance. Cells 2023; 12:1656. [PMID: 37371126 DOI: 10.3390/cells12121656] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2023] [Revised: 06/02/2023] [Accepted: 06/15/2023] [Indexed: 06/29/2023] Open
Abstract
Drought stress inducing pollen sterility can reduce crop yield worldwide. The regulatory crosstalk associated with the effects of drought on pollen formation at the cellular level has not been explored in detail so far. In this study, we performed morphological and cytoembryological analysis of anther perturbations and examined pollen development in two spring barley genotypes that differ in earliness and drought tolerance. The Syrian breeding line CamB (drought-tolerant) and the European cultivar Lubuski (drought-sensitive) were used as experimental materials to analyze the drought-induced changes in yield performance, chlorophyll fluorescence kinetics, the pollen grain micromorphology and ultrastructure during critical stages of plant development. In addition, fluctuations in HvGAMYB expression were studied, as this transcription factor is closely associated with the development of the anther. In the experiments, the studied plants were affected by drought, as was confirmed by the analyses of yield performance and chlorophyll fluorescence kinetics. However, contrary to our expectations, the pollen development of plants grown under specific conditions was not severely affected. The results also suggest that growth modification, as well as the perturbation in light distribution, can affect the HvGAMYB expression. This study demonstrated that the duration of the vegetation period can influence plant drought responses and, as a consequence, the processes associated with pollen development as every growth modification changes the dynamics of drought effects as well as the duration of plant exposition to drought.
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Affiliation(s)
- Piotr Ogrodowicz
- Institute of Plant Genetics Polish Academy of Sciences, 34 Strzeszynska Street, 60-479 Poznan, Poland
| | - Maria Katarzyna Wojciechowicz
- Department of General Botany, Institute of Experimental Biology, Faculty of Biology, Adam Mickiewicz University, 1 Wieniawskiego Street, 60-479 Poznan, Poland
| | - Anetta Kuczyńska
- Institute of Plant Genetics Polish Academy of Sciences, 34 Strzeszynska Street, 60-479 Poznan, Poland
| | - Paweł Krajewski
- Institute of Plant Genetics Polish Academy of Sciences, 34 Strzeszynska Street, 60-479 Poznan, Poland
| | - Michał Kempa
- Institute of Plant Genetics Polish Academy of Sciences, 34 Strzeszynska Street, 60-479 Poznan, Poland
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11
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He M, Wang X, Bu Y, Yang X, Zhang L, Song X. Gibberellin confers to the expression of TaGA-6D and negatively regulates the fertility of wheat with Aegilops juvenalis cytoplasm. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2023:111771. [PMID: 37328073 DOI: 10.1016/j.plantsci.2023.111771] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Revised: 06/10/2023] [Accepted: 06/11/2023] [Indexed: 06/18/2023]
Abstract
As the trace signal molecules widely existing in plants, plant hormones can regulate physiological responses of plants at low concentrations. At present, the effect of plant endogenous hormones on wheat male fertility has attracted attention, but the molecular mechanism underlying fertility regulation is unclear. Given this, the anthers of five isonuclear alloplasmic male sterile lines and their maintainer line were RNA-sequenced. A gene TaGA-6D encoding gibberellin (GA) regulated protein was isolated, which was located to the nucleus, cell wall and/or cell membrane, and predominantly highly expressed in the anther of Ju706A, a male sterile line with Aegilops juvenalis cytoplasm. By spraying assay of GA with different concentrations on fertility line Ju706R, it was found that with the increase of exogenous GA concentration, the content of endogenous GA and expression level of TaGA-6D in anther gradually increased, and the fertility decreased. However, silencing of TaGA-6D partially restore the fertility of Ju706R sprayed with 1000ng/μl GA, and indicating that gibberellin can promote the expression of TaGA-6D and negatively regulates the fertility of wheat with Aegilops juvenalis cytoplasm, which providing new insights for understanding hormone regulation of male fertility in wheat.
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Affiliation(s)
- Mengting He
- College of Agronomy, Northwest A&F University, Yangling, 712100, Shaanxi, China.
| | - Xiaoxia Wang
- College of Agronomy, Northwest A&F University, Yangling, 712100, Shaanxi, China.
| | - Yaning Bu
- College of Agronomy, Northwest A&F University, Yangling, 712100, Shaanxi, China.
| | - Xuetong Yang
- College of Agronomy, Northwest A&F University, Yangling, 712100, Shaanxi, China.
| | - Lingli Zhang
- College of Agronomy, Northwest A&F University, Yangling, 712100, Shaanxi, China.
| | - Xiyue Song
- College of Agronomy, Northwest A&F University, Yangling, 712100, Shaanxi, China.
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12
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Goel K, Kundu P, Sharma P, Zinta G. Thermosensitivity of pollen: a molecular perspective. PLANT CELL REPORTS 2023; 42:843-857. [PMID: 37029819 DOI: 10.1007/s00299-023-03003-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/09/2022] [Accepted: 03/04/2023] [Indexed: 05/06/2023]
Abstract
A current trend in climate comprises adverse weather anomalies with more frequent and intense temperature events. Heatwaves are a serious threat to global food security because of the susceptibility of crop plants to high temperatures. Among various developmental stages of plants, even a slight rise in temperature during reproductive development proves detrimental, thus making sexual reproduction heat vulnerable. In this context, male gametophyte or pollen development stages are the most sensitive ones. High-temperature exposure induces pollen abortion, reducing pollen viability and germination rate with a concomitant effect on seed yield. This review summarizes the ultrastructural, morphological, biochemical, and molecular changes underpinning high temperature-induced aberrations in male gametophytes. Specifically, we highlight the temperature sensing cascade operating in pollen, involving reactive oxygen species (ROS), heat shock factors (HSFs), a hormones and transcriptional regulatory network. We also emphasize integrating various omics approaches to decipher the molecular events triggered by heat stress in pollen. The knowledge of genes, proteins, and metabolites conferring thermotolerance in reproductive tissues can be utilized to breed/engineer thermotolerant crops to ensure food security.
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Affiliation(s)
- Komal Goel
- Biotechnology Division, CSIR-Institute of Himalayan Bioresource Technology (IHBT), Palampur, Himachal Pradesh, 176061, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh, 201002, India
| | - Pravesh Kundu
- Biotechnology Division, CSIR-Institute of Himalayan Bioresource Technology (IHBT), Palampur, Himachal Pradesh, 176061, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh, 201002, India
| | - Paras Sharma
- Biotechnology Division, CSIR-Institute of Himalayan Bioresource Technology (IHBT), Palampur, Himachal Pradesh, 176061, India
| | - Gaurav Zinta
- Biotechnology Division, CSIR-Institute of Himalayan Bioresource Technology (IHBT), Palampur, Himachal Pradesh, 176061, India.
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh, 201002, India.
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13
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He Y, He X, Wang X, Hao M, Gao J, Wang Y, Yang ZN, Meng X. An EPFL peptide signaling pathway promotes stamen elongation via enhancing filament cell proliferation to ensure successful self-pollination in Arabidopsis thaliana. THE NEW PHYTOLOGIST 2023; 238:1045-1058. [PMID: 36772858 DOI: 10.1111/nph.18806] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2022] [Accepted: 01/30/2023] [Indexed: 06/18/2023]
Abstract
Proper stamen filament elongation is essential for plant self-pollination and reproduction. Several phytohormones such as jasmonate and gibberellin play important roles in controlling filament elongation, but other endogenous signals involved in this developmental process remain unknown. We report here that three EPIDERMAL PATTERNING FACTOR-LIKE (EPFL) family peptides, EPFL4, EPFL5 and EPFL6, act redundantly to promote stamen filament elongation via enhancing filament cell proliferation in Arabidopsis thaliana. Knockout of EPFL4-6 genes led to shortened filaments due to defective filament cell proliferation, resulting in pollination failure and male sterility. Further genetic and biochemical analyses indicated that the ERECTA family and the SOMATIC EMBRYOGENESIS RECEPTOR KINASE (SERK) family RLKs form receptor complexes to perceive EPFL4-6 peptides and promote filament cell proliferation. Moreover, based on both loss- and gain-of-function genetic analyses, the mitogen-activated protein kinase cascade MKK4/MKK5-MPK6 was shown to function downstream of EPFL4-6 to positively regulate cell proliferation in stamen filaments. Together, this study reveals that an EPFL peptide signaling pathway composed of the EPFL4-6 peptide ligands, the ERECTA-SERK receptor complexes and the downstream MKK4/MKK5-MPK6 cascade promotes stamen filament elongation via enhancing filament cell proliferation to ensure successful self-pollination and normal fertility in Arabidopsis.
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Affiliation(s)
- Yunxia He
- Shanghai Key Laboratory of Plant Molecular Sciences, College of Life Sciences, Shanghai Normal University, Shanghai, 200234, China
| | - Xiaomeng He
- Shanghai Key Laboratory of Bio-Energy Crops, School of Life Sciences, Shanghai University, Shanghai, 200444, China
| | - Xiaoyang Wang
- Shanghai Key Laboratory of Plant Molecular Sciences, College of Life Sciences, Shanghai Normal University, Shanghai, 200234, China
| | - Mengyue Hao
- Shanghai Key Laboratory of Plant Molecular Sciences, College of Life Sciences, Shanghai Normal University, Shanghai, 200234, China
| | - Jiale Gao
- Shanghai Key Laboratory of Plant Molecular Sciences, College of Life Sciences, Shanghai Normal University, Shanghai, 200234, China
| | - Yangxiayu Wang
- Shanghai Key Laboratory of Bio-Energy Crops, School of Life Sciences, Shanghai University, Shanghai, 200444, China
| | - Zhong-Nan Yang
- Shanghai Key Laboratory of Plant Molecular Sciences, College of Life Sciences, Shanghai Normal University, Shanghai, 200234, China
| | - Xiangzong Meng
- Shanghai Key Laboratory of Plant Molecular Sciences, College of Life Sciences, Shanghai Normal University, Shanghai, 200234, China
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14
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Caperta AD, Fernandes I, Conceição SIR, Marques I, Róis AS, Paulo OS. Ovule Transcriptome Analysis Discloses Deregulation of Genes and Pathways in Sexual and Apomictic Limonium Species (Plumbaginaceae). Genes (Basel) 2023; 14:genes14040901. [PMID: 37107659 PMCID: PMC10137852 DOI: 10.3390/genes14040901] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2023] [Revised: 03/31/2023] [Accepted: 04/06/2023] [Indexed: 04/29/2023] Open
Abstract
The genus Limonium Mill. (sea lavenders) includes species with sexual and apomixis reproductive strategies, although the genes involved in these processes are unknown. To explore the mechanisms beyond these reproduction modes, transcriptome profiling of sexual, male sterile, and facultative apomictic species was carried out using ovules from different developmental stages. In total, 15,166 unigenes were found to be differentially expressed with apomictic vs. sexual reproduction, of which 4275 were uniquely annotated using an Arabidopsis thaliana database, with different regulations according to each stage and/or species compared. Gene ontology (GO) enrichment analysis indicated that genes related to tubulin, actin, the ubiquitin degradation process, reactive oxygen species scavenging, hormone signaling such as the ethylene signaling pathway and gibberellic acid-dependent signal, and transcription factors were found among differentially expressed genes (DEGs) between apomictic and sexual plants. We found that 24% of uniquely annotated DEGs were likely to be implicated in flower development, male sterility, pollen formation, pollen-stigma interactions, and pollen tube formation. The present study identifies candidate genes that are highly associated with distinct reproductive modes and sheds light on the molecular mechanisms of apomixis expression in Limonium sp.
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Affiliation(s)
- Ana D Caperta
- Linking Landscape, Environment, Agriculture and Food (LEAF), Research Center, Associate Laboratory TERRA, Instituto Superior de Agronomia (ISA), Universidade de Lisboa, Tapada da Ajuda, 1349-017 Lisboa, Portugal
| | - Isabel Fernandes
- cE3c-Centre for Ecology, Evolution and Environmental Changes, CHANGE-Global Change and Sustainability Institute, Faculdade de Ciências, Universidade de Lisboa, 1749-016 Lisboa, Portugal
| | - Sofia I R Conceição
- Linking Landscape, Environment, Agriculture and Food (LEAF), Research Center, Associate Laboratory TERRA, Instituto Superior de Agronomia (ISA), Universidade de Lisboa, Tapada da Ajuda, 1349-017 Lisboa, Portugal
- LASIGE Computer Science and Engineering Research Centre, Faculdade de Ciências, Universidade de Lisboa, 1749-016 Lisboa, Portugal
| | - Isabel Marques
- Linking Landscape, Environment, Agriculture and Food (LEAF), Research Center, Associate Laboratory TERRA, Instituto Superior de Agronomia (ISA), Universidade de Lisboa, Tapada da Ajuda, 1349-017 Lisboa, Portugal
- Forest Research Centre (CEF), Associate Laboratory TERRA, Instituto Superior de Agronomia (ISA), Universidade de Lisboa, Tapada da Ajuda, 1349-017 Lisboa, Portugal
| | - Ana S Róis
- Linking Landscape, Environment, Agriculture and Food (LEAF), Research Center, Associate Laboratory TERRA, Instituto Superior de Agronomia (ISA), Universidade de Lisboa, Tapada da Ajuda, 1349-017 Lisboa, Portugal
- School of Psychology and Life Sciences, Universidade Lusófona de Humanidades e Tecnologias (ULHT), Campo Grande 376, 1749-024 Lisboa, Portugal
| | - Octávio S Paulo
- cE3c-Centre for Ecology, Evolution and Environmental Changes, CHANGE-Global Change and Sustainability Institute, Faculdade de Ciências, Universidade de Lisboa, 1749-016 Lisboa, Portugal
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15
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Zúñiga-Mayo VM, Durán-Medina Y, Marsch-Martínez N, de Folter S. Hormones and Flower Development in Arabidopsis. Methods Mol Biol 2023; 2686:111-127. [PMID: 37540356 DOI: 10.1007/978-1-0716-3299-4_5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/05/2023]
Abstract
Sexual reproduction requires the participation of two gametes, female and male. In angiosperms, gametes develop in specialized organs, pollen (containing the male gametes) develops in the stamens, and the ovule (containing the female gamete) develops in the gynoecium. In Arabidopsis thaliana, the female and male sexual organs are found within the same structure called flower, surrounded by the perianth, which is composed of petals and sepals. During flower development, different organs emerge in an established order and throughout their development distinct tissues within each organ are differentiated. All this requires the coordination and synchronization of several biological processes. To achieve this, hormones and genes work together. These components can interact at different levels generating hormonal interplay and both positive and negative feedback loops, which in turn, gives robustness, stability, and flexibility to flower development. Here, we summarize the progress made on elucidating the role of different hormonal pathways during flower development in Arabidopsis thaliana.
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Affiliation(s)
- Victor M Zúñiga-Mayo
- CONACyT - Postgrado en Fitosanidad-Fitopatología, Colegio de Postgraduados, Campus Montecillo, Montecillo, Estado de México, Mexico
| | - Yolanda Durán-Medina
- Departamento de Biotecnología y Bioquímica, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional (CINVESTAV-IPN), Irapuato, Guanajuato, Mexico
| | - Nayelli Marsch-Martínez
- Departamento de Biotecnología y Bioquímica, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional (CINVESTAV-IPN), Irapuato, Guanajuato, Mexico
| | - Stefan de Folter
- Unidad de Genómica Avanzada (UGA-LANGEBIO), Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional (CINVESTAV-IPN), Irapuato, Guanajuato, Mexico.
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16
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Huang B, Fan Y, Cui L, Li C, Guo C. Cold Stress Response Mechanisms in Anther Development. Int J Mol Sci 2022; 24:ijms24010030. [PMID: 36613473 PMCID: PMC9820542 DOI: 10.3390/ijms24010030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Revised: 12/18/2022] [Accepted: 12/20/2022] [Indexed: 12/24/2022] Open
Abstract
Unlike animals that can escape threats, plants must endure and adapt to biotic and abiotic stresses in their surroundings. One such condition, cold stress, impairs the normal growth and development of plants, in which most phases of reproductive development are particularly susceptible to external low temperature. Exposed to uncomfortably low temperature at the reproductive stage, meiosis, tapetal programmed cell death (PCD), pollen viability, and fertilization are disrupted, resulting in plant sterility. Of them, cold-induced tapetal dysfunction is the main cause of pollen sterility by blocking nutrition supplements for microspore development and altering their timely PCD. Further evidence has indicated that the homeostatic imbalances of hormones, including abscisic acid (ABA) and gibberellic acid (GA), and sugars have occurred in the cold-treated anthers. Among them, cold stress gives rise to the accumulation of ABA and the decrease of active GA in anthers to affect tapetal development and represses the transport of sugar to microspores. Therefore, plants have evolved lots of mechanisms to alleviate the damage of external cold stress to reproductive development by mainly regulating phytohormone levels and sugar metabolism. Herein, we discuss the physiological and metabolic effects of low temperature on male reproductive development and the underlying mechanisms from the perspective of molecular biology. A deep understanding of cold stress response mechanisms in anther development will provide noteworthy references for cold-tolerant crop breeding and crop production under cold stress.
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17
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Yang X, Wang K, Bu Y, Niu F, Ge L, Zhang L, Song X. The transcription factor TaGAMYB modulates tapetum and pollen development of TGMS wheat YanZhan 4110S via the gibberellin signaling. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2022; 324:111447. [PMID: 36041563 DOI: 10.1016/j.plantsci.2022.111447] [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: 06/22/2022] [Revised: 08/19/2022] [Accepted: 08/24/2022] [Indexed: 06/15/2023]
Abstract
Male reproductive development in higher plants experienced a series of complex biological processes, which can be regulated by Gibberellins (GA). The transcriptional factor GAMYB is a crucial component of GA signaling in anther development. However, the mechanism of GAMYB in wheat male reproduction is less understood. Here, we found that the thermo-sensitive genic male sterilitywheat line YanZhan 4110S displayed delayed tapetum programmed cell death and pollen abortive under the hot temperature stress. Combined with RNA-Sequencing data analysis, TaGAMYB associated with fertility conversion was isolated, which was located in the nucleus and highly expressed in fertility anthers. The silencing of TaGAMYB in wheat displayed fertility decline, defects in tapetum, pollen and exine formation, where the abortion characteristics were the same as YanZhan 4110S. In addition, either hot temperature or GA3 treatment in YanZhan 4110S caused the downregulation of TaGAMYB at binucleate stage and trinucleate stage, as well as fertility decrease. Further, the transcription factor TaWRKY2 significantly changed under GA3-treatment and directly interacted with the TaGAMYB promoter by W-box cis-element. Therefore, we suggested that TaGAMYB may be essential for anther development and male fertility, and GA3 activates TaGAMYB by TaWRKY2 to regulate fertility in wheat.
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Affiliation(s)
- Xuetong Yang
- College of Agronomy, Northwest A&F University, Yangling 712100 Shaanxi, China.
| | - Kai Wang
- College of Agronomy, Northwest A&F University, Yangling 712100 Shaanxi, China.
| | - Yaning Bu
- College of Agronomy, Northwest A&F University, Yangling 712100 Shaanxi, China.
| | - Fuqiang Niu
- College of Agronomy, Northwest A&F University, Yangling 712100 Shaanxi, China.
| | - Limeng Ge
- College of Agronomy, Northwest A&F University, Yangling 712100 Shaanxi, China.
| | - Lingli Zhang
- College of Agronomy, Northwest A&F University, Yangling 712100 Shaanxi, China.
| | - Xiyue Song
- College of Agronomy, Northwest A&F University, Yangling 712100 Shaanxi, China.
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18
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Wang J, Xue X, Zeng H, Li J, Chen L. Sucrose rather than GA transported by AtSWEET13 and AtSWEET14 supports pollen fitness at late anther development stages. THE NEW PHYTOLOGIST 2022; 236:525-537. [PMID: 35811428 PMCID: PMC9795879 DOI: 10.1111/nph.18368] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/05/2022] [Accepted: 07/05/2022] [Indexed: 05/31/2023]
Abstract
Both sugar and the hormone gibberellin (GA) are essential for anther-enclosed pollen development and thus for plant productivity in flowering plants. Arabidopsis (Arabidopsis thaliana) AtSWEET13 and AtSWEET14, which are expressed in anthers and associated with seed yield, transport both sucrose and GA. However, it is still unclear which substrate transported by them directly affects anther development and seed yield. Histochemical staining, cross-sectioning and microscopy imaging techniques were used to investigate and interpret the phenotypes of the atsweet13;14 double mutant during anther development. Genetic complementation of atsweet13;14 using AtSWEET9, which transports sucrose but not GA, and the GA transporter AtNPF3.1, respectively, was conducted to test the substrate preference relevant to the biological process. The loss of both AtSWEET13 and AtSWEET14 resulted in reduced pollen viability and therefore decreased pollen germination. AtSWEET9 fully rescued the defects in pollen viability and germination of atsweet13;14, whereas AtNPF3.1 failed to do so, indicating that AtSWEET13/14-mediated sucrose rather than GA is essential for pollen fertility. AtSWEET13 and AtSWEET14 function mainly at the anther wall during late anther development stages, and they probably are responsible for sucrose efflux into locules to support pollen development to maturation, which is vital for subsequent pollen viability and germination.
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Affiliation(s)
- Jiang Wang
- Department of Plant BiologyUniversity of Illinois at Urbana‐ChampaignUrbanaIL61801USA
| | - Xueyi Xue
- Department of Plant BiologyUniversity of Illinois at Urbana‐ChampaignUrbanaIL61801USA
| | - Houqing Zeng
- Department of Plant BiologyUniversity of Illinois at Urbana‐ChampaignUrbanaIL61801USA
- College of Life and Environmental SciencesHangzhou Normal UniversityHangzhou311121China
| | - Jiankun Li
- Department of Plant BiologyUniversity of Illinois at Urbana‐ChampaignUrbanaIL61801USA
| | - Li‐Qing Chen
- Department of Plant BiologyUniversity of Illinois at Urbana‐ChampaignUrbanaIL61801USA
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19
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Wang L, Li H, Suo Y, Han W, Diao S, Mai Y, Wang Y, Yuan J, Ye L, Pu T, Zhang Q, Sun P, Li F, Fu J. Effects of Different Chemicals on Sexual Regulation in Persimmon ( Diospyros kaki Thunb.) Flowers. FRONTIERS IN PLANT SCIENCE 2022; 13:876086. [PMID: 35693185 PMCID: PMC9179176 DOI: 10.3389/fpls.2022.876086] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Accepted: 04/28/2022] [Indexed: 06/02/2023]
Abstract
Research on crop sexuality is important for establishing systems for germplasm innovation and cultivating improved varieties. In this study, androecious persimmon trees were treated with various concentrations of ethrel (100, 500, and 1,000 mg/L) and zeatin (1, 5, and 10 mg/L) to investigate the morphological, physiological, and molecular characteristics of persimmon. Ethrel at 1,000 mg/L and zeatin at 10 mg/L both significantly reduced the stamen length and pollen grain diameter in androecious trees. Ethrel treatment also led to reduced stamen development with degenerated cellular contents; zeatin treatment promoted the development of arrested pistils via maintaining relatively normal mitochondrial morphology. Both treatments altered carbohydrate, amino acid, and endogenous phytohormone contents, as well as genes associated with hormone production and floral organ development. Thereafter, we explored the combined effects of four chemicals, including ethrel and zeatin, as well as zebularine and 5-azacytidine, both of which are DNA methylation inhibitors, on androecious persimmon flower development. Morphological comparisons showed that stamen length, pollen viability, and pollen grain diameter were significantly inhibited after combined treatment. Large numbers of genes involving in carbohydrate metabolic, mitogen-activated protein kinase (MAPK) signaling, and ribosome pathways, and metabolites including uridine monophosphate (UMP) and cyclamic acid were identified in response to the treatment, indicating complex regulatory mechanisms. An association analysis of transcriptomic and metabolomic data indicated that ribosomal genes have distinct effects on UMP and cyclamic acid metabolites, explaining how male floral buds of androecious persimmon trees respond to these exogenous chemicals. These findings extend the knowledge concerning sexual differentiation in persimmon; they also provide a theoretical basis for molecular breeding, high-yield cultivation, and quality improvement in persimmon.
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Hormonal Signaling in the Progamic Phase of Fertilization in Plants. HORTICULTURAE 2022. [DOI: 10.3390/horticulturae8050365] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Pollen–pistil interaction is a basic process in the reproductive biology of flowering plants and has been the subject of intense fundamental research that has a pronounced practical value. The phytohormones ethylene (ET) and cytokinin (CK) together with other hormones such as auxin, gibberellin (GA), jasmonic acid (JA), abscisic acid (ABA), and brassinosteroids (BRs) influence different stages of plant development and growth. Here, we mainly focus on the information about the ET and CK signaling in the progamic phase of fertilization. This signaling occurs during male gametophyte development, including tapetum (TAP) cell death, and pollen tube growth, including synergid programmed cell death (PCD) and self-incompatibility (SI)-induced PCD. ET joins the coordination of successive events in the developing anther, including the TAP development and cell death, anther dehiscence, microspore development, pollen grain maturation, and dehydration. Both ET and CK take part in the regulation of E. ET signaling accompanies adhesion, hydration, and germination of pollen grains in the stigma and growth of pollen tubes in style tissues. Thus, ET production may be implicated in the pollination signaling between organs accumulated in the stigma and transmitted to the style and ovary to ensure successful pollination. Some data suggest that ET and CK signaling are involved in S-RNase-based SI.
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21
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Su Z, Xuan X, Sheng Z, Wang F, Zhang X, Ye D, Wang X, Dong T, Pei D, Zhang P, Fang J, Wang C. Characterization and regulatory mechanism analysis of VvmiR156a-VvAGL80 pair during grapevine flowering and parthenocarpy process induced by gibberellin. THE PLANT GENOME 2022; 15:e20181. [PMID: 34882981 DOI: 10.1002/tpg2.20181] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/18/2021] [Accepted: 10/25/2021] [Indexed: 06/13/2023]
Abstract
MicroRNA156 (miR156) is an important conserved miRNA family in plants. Recently, we revealed VvmiR156a could involve in the modulation of gibberellin (GA)-mediated flower and berry development process of grapevine (Vitis vinifera L.). However, how to manipulate this process is unclear. For this, we used the GA-induced grapevine parthenocarpy system to investigate the regulatory roles of VvmiR156a during this process. Here, we cloned the mature and precursor sequences of VvmiR156a in Wink grape and identified its potential target gene VvAGL80, which belongs to the MADS-box gene family. Moreover, using RNA ligase-mediated 5' rapid amplification of cDNA ends (RLM-RACE) and poly(A)polymerase-mediated 3' rapid amplification of cDNA (PPM-RACE) technologies, it confirmed that VvAGL80 was the true target gene of VvmiR159a. Analysis of promoter cis-elements and β-glucuronidase (GUS) staining showed that both VvmiR156a and VvAGL80 contained GA-responsive elements and could respond to GA treatments. Quantitative real-time-polymerase chain reaction (qRT-PCR) analysis exhibited the VvmiR156a and VvAGL80 showed opposite expression trends during grapevine flower and berry development, indicating that VvmiR156a negatively regulated the expression of VvAGL80 during this process. After GA treatment, the expression of miR156 in flowers was downregulated significantly, while that of VvAGL80 was upregulated, thereby accelerating grapevine flowering. Furthermore, GA treatment enhanced the negative regulation of VvmiR156a on VvAGL80 in seed, especially at the seed-coat hardening stage, which was the key period of seed growth and development. Our findings enriched the knowledge of the regulatory mechanism of the miRNA-mediated grapevine parthenocarpy process.
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Affiliation(s)
- Ziwen Su
- College of Horticulture, Nanjing Agricultural Univ., Nanjing, 210095, China
- Institute of Pomology, Jiangsu Academy of Agricultural Sciences, Nanjing, 210014, China
| | - Xuxian Xuan
- College of Horticulture, Nanjing Agricultural Univ., Nanjing, 210095, China
| | - Zilu Sheng
- College of Horticulture, Nanjing Agricultural Univ., Nanjing, 210095, China
| | - Fei Wang
- College of Horticulture, Nanjing Agricultural Univ., Nanjing, 210095, China
| | - Xiaowen Zhang
- College of Horticulture, Nanjing Agricultural Univ., Nanjing, 210095, China
| | - Dongdong Ye
- College of Horticulture, Nanjing Agricultural Univ., Nanjing, 210095, China
| | - Xicheng Wang
- Institute of Pomology, Jiangsu Academy of Agricultural Sciences, Nanjing, 210014, China
| | - Tianyu Dong
- College of Horticulture, Nanjing Agricultural Univ., Nanjing, 210095, China
| | - Dan Pei
- College of Horticulture, Nanjing Agricultural Univ., Nanjing, 210095, China
| | - Peian Zhang
- College of Horticulture, Nanjing Agricultural Univ., Nanjing, 210095, China
| | - Jinggui Fang
- College of Horticulture, Nanjing Agricultural Univ., Nanjing, 210095, China
| | - Chen Wang
- College of Horticulture, Nanjing Agricultural Univ., Nanjing, 210095, China
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22
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Zhang JX, Liu HM, Yang BN, Wang HL, Niu SH, El-Kassaby YA, Li W. Phytohormone profiles and related gene expressions after endodormancy release in developing Pinus tabuliformis male strobili. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2022; 316:111167. [PMID: 35151451 DOI: 10.1016/j.plantsci.2021.111167] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2021] [Revised: 12/13/2021] [Accepted: 12/21/2021] [Indexed: 06/14/2023]
Abstract
Development after endo-dormancy release ensures perennial plants, such as forest trees, proper response to environmental changes and enhances their adaptability. In northern hemisphere, megasporophore and microsporophore of conifers undergo dormancy to complete their development. Here combined with transcriptome data, we used high-performance liquid chromatography/electrospray ionization tandem mass spectrometry (ESI-HPLC-MS/MS) to quantitatively analyse the various hormones (Abscisic Acid (ABA), 3-Indoleacetic acid (IAA), Gibberellins (GAs), Cytokinin (CTK), Jasmonic acid (JA) and Salicylic acid (SA)) of Chinese pine (Pinus tabuliformis Carr.) male strobili after endo-dormancy release. More specifically, we analysed endogenous hormones and their related-genes and verified the important role of ABA in plants growth and development. We observed rapid decrease in ABA content after dormancy release, resulting in reducing the inhibitory effect on male strobili growth. Similarly, rapid drop in ABA/GA ratio was observed and was associated with the start of male strobili growth and development. Combined with transcriptome data, we found that HAB2-SnRK2.10 played a central role in the ABA pathway in the entire network of hormones regulating male strobili development. Due to external environment warming, the differentially expressed HAB2-SnRK gene led to ABA content rapid decline, thus initiating male strobili growth. We constructed a network of hormone-regulated development to understand the interactions between hormones after male strobili dormancy release of male strobili. This study provided essential foundations for studying megasporophore and microsporophore growth mechanism after endo-dormancy and offered new ideas for flower development in gymnosperms and angiosperms.
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Affiliation(s)
- Jing-Xing Zhang
- National Engineering Laboratory of Tree Breeding, Key Laboratory of Genetics and Breeding in Forest Trees and Ornamental Plants of Ministry of Education, The Tree and Ornamental Plant Breeding and Biotechnology Laboratory of National Forestry and Grassland Administration, College of Biological Sciences and Technology, Beijing Forestry University, People's Republic of China
| | - Hong-Mei Liu
- National Engineering Laboratory of Tree Breeding, Key Laboratory of Genetics and Breeding in Forest Trees and Ornamental Plants of Ministry of Education, The Tree and Ornamental Plant Breeding and Biotechnology Laboratory of National Forestry and Grassland Administration, College of Biological Sciences and Technology, Beijing Forestry University, People's Republic of China
| | - Bo-Ning Yang
- National Engineering Laboratory of Tree Breeding, Key Laboratory of Genetics and Breeding in Forest Trees and Ornamental Plants of Ministry of Education, The Tree and Ornamental Plant Breeding and Biotechnology Laboratory of National Forestry and Grassland Administration, College of Biological Sciences and Technology, Beijing Forestry University, People's Republic of China
| | - Hui-Li Wang
- National Engineering Laboratory of Tree Breeding, Key Laboratory of Genetics and Breeding in Forest Trees and Ornamental Plants of Ministry of Education, The Tree and Ornamental Plant Breeding and Biotechnology Laboratory of National Forestry and Grassland Administration, College of Biological Sciences and Technology, Beijing Forestry University, People's Republic of China
| | - Shi-Hui Niu
- National Engineering Laboratory of Tree Breeding, Key Laboratory of Genetics and Breeding in Forest Trees and Ornamental Plants of Ministry of Education, The Tree and Ornamental Plant Breeding and Biotechnology Laboratory of National Forestry and Grassland Administration, College of Biological Sciences and Technology, Beijing Forestry University, People's Republic of China
| | - Yousry A El-Kassaby
- Department of Forest and Conservation Sciences, Faculty of Forestry, University of British Columbia, 2424 Main Mall, Vancouver, BC, V6T 1Z4, Canada
| | - Wei Li
- National Engineering Laboratory of Tree Breeding, Key Laboratory of Genetics and Breeding in Forest Trees and Ornamental Plants of Ministry of Education, The Tree and Ornamental Plant Breeding and Biotechnology Laboratory of National Forestry and Grassland Administration, College of Biological Sciences and Technology, Beijing Forestry University, People's Republic of China.
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23
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Zhou F, Chen Y, Wu H, Yin T. A Selection of Reliable Reference Genes for Gene Expression Analysis in the Female and Male Flowers of Salix suchowensis. PLANTS (BASEL, SWITZERLAND) 2022; 11:plants11050647. [PMID: 35270117 PMCID: PMC8912643 DOI: 10.3390/plants11050647] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2022] [Revised: 02/17/2022] [Accepted: 02/23/2022] [Indexed: 05/03/2023]
Abstract
Salix is a dioecious plant. Research on the molecular regulation mechanism of male and female inflorescence differentiation and development is necessary to analyze sex differentiation in the willow and the underlying mechanisms of unisexual flower development. However, at present, there are no reference genes suitable for stable expression in the process of willow inflorescence development. In this study, Salix suchowensis was used as the research material, nine candidate reference genes (α-TUB1, α-TUB2, ACT, H2A, DnaJ, CDC2, GAPDH, TIP41, β-TUB) were selected, and qRT-PCR technology was used to detect the expression of each candidate reference gene in female and male flowers at different developmental stages and using five algorithms (geNorm, Normfinder, Delta Ct, BestKeeper, and RefFinder) to comprehensively evaluate the stability of candidate reference genes. The results showed that ACT and DnaJ were stably expressed in all samples and could be used as reference genes. In addition, the reliability of the screening results was further verified via an expression pattern analysis of the CFS gene that encodes flower specific transcription factor in different samples. The stable reference genes selected in this study provide the basis for future research on the expression analysis of functional genes related to the development of male and female flowers of S. suchowensis.
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RNA-Binding Protein MAC5A Is Required for Gibberellin-Regulated Stamen Development. Int J Mol Sci 2022; 23:ijms23042009. [PMID: 35216125 PMCID: PMC8874600 DOI: 10.3390/ijms23042009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2022] [Revised: 02/09/2022] [Accepted: 02/09/2022] [Indexed: 11/23/2022] Open
Abstract
The development of floral organs is coordinated by an elaborate network of homeotic genes, and gibberellin (GA) signaling is involved in floral organ development; however, the underlying molecular mechanisms remain elusive. In the present study, we found that MOS4-ASSOCIATED COMPLEX 5A (MAC5A), which is a protein containing an RNA-binding motif, was involved in the development of sepals, petals, and stamens; either the loss or gain of MAC5A function resulted in stamen malformation and a reduced seed set. The exogenous application of GA considerably exacerbated the defects in mac5a null mutants, including fewer stamens and male sterility. MAC5A was predominantly expressed in pollen grains and stamens, and overexpression of MAC5A affected the expression of homeotic genes such as APETALA1 (AP1), AP2, and AGAMOUS (AG). MAC5A may interact with RABBIT EARS (RBE), a repressor of AG expression in Arabidopsis flowers. The petal defect in rbe null mutants was at least partly rescued in mac5a rbe double mutants. These findings suggest that MAC5A is a novel factor that is required for the normal development of stamens and depends on the GA signaling pathway.
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25
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Li F, Wang Y, Gao H, Zhang X, Zhuang N. Comparative transcriptome analysis reveals differential gene expression in sterile and fertile rubber tree varieties during flower bud differentiation. JOURNAL OF PLANT PHYSIOLOGY 2021; 265:153506. [PMID: 34492526 DOI: 10.1016/j.jplph.2021.153506] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2021] [Revised: 08/24/2021] [Accepted: 08/25/2021] [Indexed: 06/13/2023]
Abstract
Plant male sterility (MS) is an important agronomic trait that provides an efficient tool for hybridization and heterosis utilization of crops. Based on phenotypic and cytological observations, our study performed a multi-comparison transcriptome analysis strategy on multiple sterile and fertile rubber tree varieties using RNA-seq. Compared with the male-fertile varieties, a total of 1590 differentially expressed genes (DEGs) were detected in male-sterile varieties, including 970 up-regulated and 620 down-regulated transcripts in sterile varieties. Key DEGs were further assessed focusing on anther development, microsporogenesis and plant hormone metabolism. Twenty DEGs were selected randomly to validate transcriptome data using quantitative real-time PCR (qRT-PCR). Eleven key genes were subjected to expression pattern analysis using qRT-PCR and fluorescence in situ hybridization. Among them, nine genes, i.e., A6, GAI1, ACA7, TKPR1, CYP704B1, XTH26, MS1, MS35 and MYB33, that regulate callose metabolism, pollen wall formation, tapetum and microspores development were identified as candidate male-sterile genes. These findings provide insights into the molecular mechanism of male sterility in rubber tree.
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Affiliation(s)
- Fei Li
- College of Tropical Crops, Hainan University, Hainan, 570228, China
| | - Ying Wang
- College of Tropical Crops, Hainan University, Hainan, 570228, China
| | - Heqiong Gao
- College of Tropical Crops, Hainan University, Hainan, 570228, China
| | - Xiaofei Zhang
- Rubber Research Institute, Chinese Academy of Topical Agricultural Sciences, State Center for Rubber Breeding, Danzhou, Hainan, 571737, China
| | - Nansheng Zhuang
- College of Tropical Crops, Hainan University, Hainan, 570228, China.
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Gao K, Zha WL, Zhu JX, Zheng C, Zi JC. A review: biosynthesis of plant-derived labdane-related diterpenoids. Chin J Nat Med 2021; 19:666-674. [PMID: 34561077 DOI: 10.1016/s1875-5364(21)60100-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2021] [Indexed: 11/16/2022]
Abstract
Plant-derived labdane-related diterpenoids (LRDs) represent a large group of terpenoids. LRDs possess either a labdane-type bicyclic core structure or more complex ring systems derived from labdane-type skeletons, such as abietane, pimarane, kaurane, etc. Due to their various pharmaceutical activities and unique properties, many of LRDs have been widely used in pharmaceutical, food and perfume industries. Biosynthesis of various LRDs has been extensively studied, leading to characterization of a large number of new biosynthetic enzymes. The biosynthetic pathways of important LRDs and the relevant enzymes (especially diterpene synthases and cytochrome P450 enzymes) were summarized in this review.
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Affiliation(s)
- Ke Gao
- College of Pharmacy, Jinan University, Guangzhou 510632, China
| | - Wen-Long Zha
- College of Pharmacy, Jinan University, Guangzhou 510632, China
| | - Jian-Xun Zhu
- College of Pharmacy, Jinan University, Guangzhou 510632, China
| | - Cheng Zheng
- Zhejiang Institute for Food and Drug Control, NMPA Key Laboratory for Quality Evaluation of Traditional Chinese Medicine, Hangzhou 310052, China.
| | - Jia-Chen Zi
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100050, China.
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Marciniak K, Przedniczek K. Anther dehiscence is regulated by gibberellic acid in yellow lupine (Lupinus luteus L.). BMC PLANT BIOLOGY 2021; 21:314. [PMID: 34215194 PMCID: PMC8252261 DOI: 10.1186/s12870-021-03085-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/26/2020] [Accepted: 06/04/2021] [Indexed: 05/28/2023]
Abstract
BACKGROUND Anther dehiscence resulting in the release of pollen grains is tightly regulated in a spatiotemporal manner by various factors. In yellow lupine (Lupinus luteus L.), a species that shows cleistogamy, the anthers split before the flowers open, but the course and regulation of this process are unknown. The specific control of anther development takes place via hormonal pathways, the wide action of which ensures reproductive success. In our previous research concerning flower and early pod development in yellow lupine, we showed that the lowest transcript level of LlDELLA1, a main repressor of gibberellin (GA) signalling, occurs approximately at the time of anther opening; therefore, the main purpose of this study was to precisely investigate the gibberellic acid (GA3)-dependent regulation of the anther dehiscence in this species. RESULTS In this paper, we showed the specific changes in the yellow lupine anther structure during dehiscence, including secondary thickening in the endothecium by lignocellulosic deposition, enzymatic cell wall breakdown at the septum/stomium and cell degeneration via programmed cell death (PCD), and identified several genes widely associated with this process. The expression profile of genes varied over time, with the most intense mRNA accumulation in the phases prior to or at the time of anther opening. The transcriptional activity also revealed that these genes are highly coexpressed and regulated in a GA-dependent manner. The cellular and tissue localization of GA3 showed that these molecules are present before anther opening, mainly in septum cells, near the vascular bundle and in the endothecium, and that they are subsequently undetectable. GA3 localization strongly correlates with the transcriptional activity of genes related to GA biosynthesis and deactivation. The results also suggest that GA3 controls LlGAMYB expression via an LlMIR159-dependent pathway. CONCLUSIONS The presented results show a clear contribution of GA3 in the control of the extensive anther dehiscence process in yellow lupine. Understanding the processes underlying pollen release at the hormonal and molecular levels is a significant aspect of controlling fertility in this economically important legume crop species and is of increasing interest to breeders.
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Affiliation(s)
- Katarzyna Marciniak
- Faculty of Biological and Veterinary Sciences, Department of Plant Physiology and Biotechnology, Nicolaus Copernicus University, Lwowska 1 St, 87-100, Toruń, Poland.
| | - Krzysztof Przedniczek
- Faculty of Biological and Veterinary Sciences, Department of Plant Physiology and Biotechnology, Nicolaus Copernicus University, Lwowska 1 St, 87-100, Toruń, Poland
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28
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Qian Q, Yang Y, Zhang W, Hu Y, Li Y, Yu H, Hou X. A novel Arabidopsis gene RGAT1 is required for GA-mediated tapetum and pollen development. THE NEW PHYTOLOGIST 2021; 231:137-151. [PMID: 33660280 DOI: 10.1111/nph.17314] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/07/2020] [Accepted: 02/22/2021] [Indexed: 06/12/2023]
Abstract
The phytohormone gibberellin (GA) is critical for anther development. RGA, a member of the DELLA family of proteins that are central GA signalling repressors, is a key regulator of male fertility in plants. However, the downstream genes in GA-RGA-mediated anther development remain to be characterised. We identified RGA Target 1 (RGAT1), a novel Arabidopsis gene, that functions as an important RGA-regulated target in pollen development. RGAT1 is predominantly expressed in the tapetum and microspores during anther stages 8-11, and can be directly activated by RGA and suppressed by GA in inflorescence apices. Both loss of function and gain of function of RGAT1 led to abnormal tapetum development, resulting in abortive pollen and short siliques. In RGAT1-knockdown and overexpression lines, pollen abortion occurred at stage 10. Loss of RGAT1 function induced the premature degeneration of tapetal cells with defective ER-derived tapetosomes, while RGAT1 overexpression delayed tapetum degeneration. TUNEL assay confirmed that RGAT1 participates in timely tapetal programmed cell death. Moreover, reducing RGAT1 expression partially rescued the tapetal developmental defects in GA-deficient ga1-3 mutant. Our findings revealed that RGAT1 is a direct target of RGA and plays an essential role in GA-mediated tapetum and pollen development.
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Affiliation(s)
- Qian Qian
- Key Laboratory of South China Agricultural Plant Molecular Analysis and Genetic Improvement & Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Innovative Academy of Seed Design, Chinese Academy of Sciences, Guangzhou, 510650, China
| | - Yuhua Yang
- Key Laboratory of South China Agricultural Plant Molecular Analysis and Genetic Improvement & Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Innovative Academy of Seed Design, Chinese Academy of Sciences, Guangzhou, 510650, China
| | - Wenbin Zhang
- Key Laboratory of South China Agricultural Plant Molecular Analysis and Genetic Improvement & Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Innovative Academy of Seed Design, Chinese Academy of Sciences, Guangzhou, 510650, China
- University of the Chinese Academy of Sciences, Beijing, 100049, China
| | - Yilong Hu
- Key Laboratory of South China Agricultural Plant Molecular Analysis and Genetic Improvement & Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Innovative Academy of Seed Design, Chinese Academy of Sciences, Guangzhou, 510650, China
| | - Yuge Li
- Key Laboratory of South China Agricultural Plant Molecular Analysis and Genetic Improvement & Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Innovative Academy of Seed Design, Chinese Academy of Sciences, Guangzhou, 510650, China
| | - Hao Yu
- Temasek Life Sciences Laboratory, National University of Singapore, Singapore, 117604, Singapore
- Department of Biological Sciences, Faculty of Science, National University of Singapore, Singapore, 117543, Singapore
| | - Xingliang Hou
- Key Laboratory of South China Agricultural Plant Molecular Analysis and Genetic Improvement & Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Innovative Academy of Seed Design, Chinese Academy of Sciences, Guangzhou, 510650, China
- University of the Chinese Academy of Sciences, Beijing, 100049, China
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Hernández-García J, Sun R, Serrano-Mislata A, Inoue K, Vargas-Chávez C, Esteve-Bruna D, Arbona V, Yamaoka S, Nishihama R, Kohchi T, Blázquez MA. Coordination between growth and stress responses by DELLA in the liverwort Marchantia polymorpha. Curr Biol 2021; 31:3678-3686.e11. [PMID: 34214451 DOI: 10.1016/j.cub.2021.06.010] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2021] [Revised: 04/27/2021] [Accepted: 06/03/2021] [Indexed: 12/19/2022]
Abstract
Plant survival depends on the optimal use of resources under variable environmental conditions. Among the mechanisms that mediate the balance between growth, differentiation, and stress responses, the regulation of transcriptional activity by DELLA proteins stands out. In angiosperms, DELLA accumulation promotes defense against biotic and abiotic stress and represses cell division and expansion, while the loss of DELLA function is associated with increased plant size and sensitivity toward stress.1 Given that DELLA protein stability is dependent on gibberellin (GA) levels2 and GA metabolism is influenced by the environment,3 this pathway is proposed to relay environmental information to the transcriptional programs that regulate growth and stress responses in angiosperms.4,5 However, DELLA genes are also found in bryophytes, whereas canonical GA receptors have been identified only in vascular plants.6-10 Thus, it is not clear whether these regulatory functions of DELLA predated or emerged with typical GA signaling. Here, we show that, as in vascular plants, the only DELLA in the liverwort Marchantia polymorpha also participates in the regulation of growth and key developmental processes and promotes oxidative stress tolerance. Moreover, part of these effects is likely caused by the conserved physical interaction with the MpPIF transcription factor. Therefore, we suggest that the role in the coordination of growth and stress responses was already encoded in the DELLA protein of the common ancestor of land plants, and the importance of this function is underscored by its conservation over the past 450 million years.
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Affiliation(s)
- Jorge Hernández-García
- Instituto de Biología Molecular y Celular de Plantas (CSIC-Universitat Politècnica de València), C/Ingeniero Fausto Elio s/n, 46022 Valencia, Spain
| | - Rui Sun
- Graduate School of Biostudies, Kyoto University, Kyoto 606-8502, Japan
| | - Antonio Serrano-Mislata
- Instituto de Biología Molecular y Celular de Plantas (CSIC-Universitat Politècnica de València), C/Ingeniero Fausto Elio s/n, 46022 Valencia, Spain
| | - Keisuke Inoue
- Graduate School of Biostudies, Kyoto University, Kyoto 606-8502, Japan
| | - Carlos Vargas-Chávez
- Institute of Evolutionary Biology (CSIC-Universitat Pompeu Fabra), Passeig de la Barceloneta 37-49, Barcelona, Spain
| | - David Esteve-Bruna
- Instituto de Biología Molecular y Celular de Plantas (CSIC-Universitat Politècnica de València), C/Ingeniero Fausto Elio s/n, 46022 Valencia, Spain
| | - Vicent Arbona
- Departament de Ciències Agràries i del Medi Natural, Universitat Jaume I, Avda. Sos Baynat s/n, 12071 Castellón de la Plana, Spain
| | - Shohei Yamaoka
- Graduate School of Biostudies, Kyoto University, Kyoto 606-8502, Japan
| | - Ryuichi Nishihama
- Graduate School of Biostudies, Kyoto University, Kyoto 606-8502, Japan
| | - Takayuki Kohchi
- Graduate School of Biostudies, Kyoto University, Kyoto 606-8502, Japan.
| | - Miguel A Blázquez
- Instituto de Biología Molecular y Celular de Plantas (CSIC-Universitat Politècnica de València), C/Ingeniero Fausto Elio s/n, 46022 Valencia, Spain.
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Li Q, Li J, Zhang L, Pan C, Yang N, Sun K, He C. Gibberellins are required for dimorphic flower development in Viola philippica. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2021; 303:110749. [PMID: 33487338 DOI: 10.1016/j.plantsci.2020.110749] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/06/2020] [Revised: 10/26/2020] [Accepted: 10/31/2020] [Indexed: 05/24/2023]
Abstract
Photoperiod is a major determinant of chasmogamous (CH)-cleistogamous (CL) dimorphic flower development in Viola philippica, and only long-day (LD) conditions induce CL flowers. In this study, it was found that the active gibberellin (GA) content in CL floral buds was higher than in CH floral buds formed under short-day (SD) conditions, suggesting that the biosynthesis of active GAs is enhanced by a longer photoperiod and may be associated with dimorphic flower development. Thus, the next step was to molecularly characterize the key V. philippica GA synthesis genes GA 20-oxidase (VpGA20ox) and GA 3-oxidase (VpGA3ox). In terms of the expression of VpGA20ox and VpGA3ox, it was found that the active GAs could be upregulated in developing pistils under both LD and SD conditions to develop functional pistils, and GAs could also accumulate in the stamens under SD conditions. The anthers and the adjacent petals were well developed under SD conditions. In contrast, the above-mentioned floral organs displayed low GA contents under LD conditions and were poorly developed. Although the application of paclobutrazol, an inhibitor of GA synthesis, did not reverse CL development under LD conditions, exogenous GAs could partially trigger the transition from CH to CL flowers under relative SD conditions (≤12 h daylight). This was coupled with the downregulation of B-class MADS-box genes, thereby restraining stamen and petal development. Both VpGA20ox and VpGA3ox exhibited similar expression profiles with B-class MADS-box genes in the development of the stamens and petals. Therefore, in response to photoperiod, GA signaling could affect the expression of B-class homeotic genes and regulate dimorphic flower development in Viola. As a compensation for poorly-developed nectaries, anthers, and petals, filament elongation, style shortness, and inward bending could ensure self-pollination in CL flowers. This work provides new insights into the regulation of CH-CL floral development and the evolutionary significance of the formation of dimorphic flowers.
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Affiliation(s)
- Qiaoxia Li
- Life Science College, Northwest Normal University, Anning East Road 967, Anning, 730070 Lanzhou, Gansu, China.
| | - Jigang Li
- Life Science College, Northwest Normal University, Anning East Road 967, Anning, 730070 Lanzhou, Gansu, China
| | - Li Zhang
- Life Science College, Northwest Normal University, Anning East Road 967, Anning, 730070 Lanzhou, Gansu, China
| | - Chaochao Pan
- Life Science College, Northwest Normal University, Anning East Road 967, Anning, 730070 Lanzhou, Gansu, China
| | - Ning Yang
- Life Science College, Northwest Normal University, Anning East Road 967, Anning, 730070 Lanzhou, Gansu, China
| | - Kun Sun
- Life Science College, Northwest Normal University, Anning East Road 967, Anning, 730070 Lanzhou, Gansu, China.
| | - Chaoying He
- State Key Laboratory of Systematic and Evolutionary Botany, Institute of Botany, Chinese Academy of Sciences, Nanxincun 20, Xiangshan, 100093 Beijing, China; University of Chinese Academy of Sciences, Yuquan Road 19A, 100049 Beijing, China.
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Cabral LM, Masuda HP, Ballesteros HF, de Almeida-Engler J, Alves-Ferreira M, De Toni KLG, Bizotto FM, Ferreira PCG, Hemerly AS. ABAP1 Plays a Role in the Differentiation of Male and Female Gametes in Arabidopsis thaliana. FRONTIERS IN PLANT SCIENCE 2021; 12:642758. [PMID: 33643370 PMCID: PMC7903899 DOI: 10.3389/fpls.2021.642758] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2020] [Accepted: 01/22/2021] [Indexed: 05/07/2023]
Abstract
The correct development of a diploid sporophyte body and a haploid gametophyte relies on a strict coordination between cell divisions in space and time. During plant reproduction, these divisions have to be temporally and spatially coordinated with cell differentiation processes, to ensure a successful fertilization. Armadillo BTB Arabidopsis protein 1 (ABAP1) is a plant exclusive protein that has been previously reported to control proliferative cell divisions during leaf growth in Arabidopsis. Here, we show that ABAP1 binds to different transcription factors that regulate male and female gametophyte differentiation, repressing their target genes expression. During male gametogenesis, the ABAP1-TCP16 complex represses CDT1b transcription, and consequently regulates microspore first asymmetric mitosis. In the female gametogenesis, the ABAP1-ADAP complex represses EDA24-like transcription, regulating polar nuclei fusion to form the central cell. Therefore, besides its function during vegetative development, this work shows that ABAP1 is also involved in differentiation processes during plant reproduction, by having a dual role in regulating both the first asymmetric cell division of male gametophyte and the cell differentiation (or cell fusion) of female gametophyte.
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Affiliation(s)
- Luiz M. Cabral
- Instituto de Bioquímica Médica Leopoldo de Meis, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
- Departamento de Biologia Celular e Molecular, Instituto de Biologia, Universidade Federal Fluminense, Niterói, Brazil
| | - Hana P. Masuda
- Instituto de Bioquímica Médica Leopoldo de Meis, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
- Centro de Ciências Naturais e Humanas, Universidade Federal do ABC, São Bernardo do Campo, Brazil
| | - Helkin F. Ballesteros
- Instituto de Bioquímica Médica Leopoldo de Meis, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Janice de Almeida-Engler
- Institut National de la Recherche Agronomique, Centre National de la Recherche Scientifique, Institut Sophia Agrobiotech, Université Côte d’Azur, Sophia Antipolis, France
| | - Márcio Alves-Ferreira
- Departamento de Genética, Instituto de Biologia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Karen L. G. De Toni
- Instituto de Pesquisas Jardim Botânico do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Fernanda M. Bizotto
- Centro de Ciências Naturais e Humanas, Universidade Federal do ABC, São Bernardo do Campo, Brazil
| | - Paulo C. G. Ferreira
- Instituto de Bioquímica Médica Leopoldo de Meis, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Adriana S. Hemerly
- Instituto de Bioquímica Médica Leopoldo de Meis, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
- *Correspondence: Adriana S. Hemerly, ;
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Wang Y, Ye H, Bai J, Ren F. The regulatory framework of developmentally programmed cell death in floral organs: A review. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2021; 158:103-112. [PMID: 33307422 DOI: 10.1016/j.plaphy.2020.11.052] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/07/2020] [Accepted: 11/30/2020] [Indexed: 05/27/2023]
Abstract
Developmentally programmed cell death (dPCD) is a tightly controlled biological process. In recent years, vital roles of dPCD on regulating floral organ growth and development have been reported. It is well known that flower is an essential organ for reproduction and a turning point of plants' life cycle. Hence, uncovering the complex molecular networks which regulates dPCD processes in floral organs is utmost important. So far, our understanding of dPCD on floral organ growth and development is just starting. Herein, we summarize the important factors that involved in the tapetal degeneration, pollen tube rupture, receptive synergid cell death, nucellar degradation, and antipodal cell degradation. Meanwhile, the known factors that involved in transmitting tract formation and self-incompatibility-induced PCD were also introduced. Furthermore, the genes that associated with anther dehiscence and petal senescence and abscission were reviewed as well. The functions of various types of factors involved in floral dPCD processes are highlighted principally. The regulatory panorama described here can provide us some insights about flower-specific dPCD process.
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Affiliation(s)
- Yukun Wang
- Division of Biological Science, Nara Institute of Science and Technology, Ikoma, 630-0192, Japan.
| | - Hong Ye
- Division of Biological Science, Nara Institute of Science and Technology, Ikoma, 630-0192, Japan
| | - Jianfang Bai
- Beijing Engineering Research Center for Hybrid Wheat, Beijing Academy of Agriculture and Forestry Sciences, Beijing, 100097, PR China
| | - Fei Ren
- School of Agricultural Science and Engineering, Shaoguan University, 288 Daxue Road, Shaoguan, 512000, PR China.
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Yu S, Wang JW. The Crosstalk between MicroRNAs and Gibberellin Signaling in Plants. PLANT & CELL PHYSIOLOGY 2020; 61:1880-1890. [PMID: 32845336 DOI: 10.1093/pcp/pcaa079] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2020] [Accepted: 06/05/2020] [Indexed: 05/14/2023]
Abstract
Gibberellin (GA) is an integral phytohormone that plays prominent roles in controlling seed germination, stem elongation, leaf development and floral induction. It has been shown that GA regulates these diverse biological processes mainly through overcoming the suppressive effects of the DELLA proteins, a family of nuclear repressors of GA response. MicroRNAs (miRNAs), which have been identified as master regulators of gene expression in eukaryotes, are also involved in a wide range of plant developmental events through the repression of their target genes. The pathways of GA biosynthesis and signaling, as well as the pathways of miRNA biogenesis and regulation, have been profoundly delineated in the past several decades. Growing evidence has shown that miRNAs and GAs are coordinated in regulating plant development, as several components in GA pathways are targeted by miRNAs, and GAs also regulate the expression of miRNAs or their target genes vice versa. Here, we review the recent advances in our understanding of the molecular connections between miRNAs and GA, with an emphasis on the two miRNAs, miR156 and miR159.
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Affiliation(s)
- Sha Yu
- Center for RNA research, Institute for Basic Science, Seoul 00826, South Korea
| | - Jia-Wei Wang
- National Key Laboratory of Plant Molecular Genetics (NKLPMG), CAS Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology and Ecology (SIPPE), Chinese Academy of Sciences (CAS), Shanghai 200032, China
- School of Life Science and Technology, ShanghaiTech University, Shanghai 201210, China
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Gene Mapping, Genome-Wide Transcriptome Analysis, and WGCNA Reveals the Molecular Mechanism for Triggering Programmed Cell Death in Rice Mutant pir1. PLANTS 2020; 9:plants9111607. [PMID: 33228024 PMCID: PMC7699392 DOI: 10.3390/plants9111607] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Revised: 11/17/2020] [Accepted: 11/17/2020] [Indexed: 01/13/2023]
Abstract
Programmed cell death (PCD) is involved in plant growth and development and in resistance to biotic and abiotic stress. To understand the molecular mechanism that triggers PCD, phenotypic and physiological analysis was conducted using the first three leaves of mutant rice PCD-induced-resistance 1(pir1) and its wild-type ZJ22. The 2nd and 3rd leaves of pir1 had a lesion mimic phenotype, which was shown to be an expression of PCD induced by H2O2-accumulation. The PIR1 gene was mapped in a 498 kb-interval between the molecular markers RM3321 and RM3616 on chromosome 5, and further analysis suggested that the PCD phenotype of pir1 is controlled by a novel gene for rice PCD. By comparing the mutant with wild type rice, 1679, 6019, and 4500 differentially expressed genes (DEGs) were identified in the three leaf positions, respectively. KEGG analysis revealed that DEGs were most highly enriched in phenylpropanoid biosynthesis, alpha-linolenic acid metabolism, and brassinosteroid biosynthesis. In addition, conjoint analysis of transcriptome data by weighted gene co-expression network analysis (WGCNA) showed that the turquoise module of the 18 identified modules may be related to PCD. There are close interactions or indirect cross-regulations between the differential genes that are significantly enriched in the phenylpropanoid biosynthesis pathway and the hormone biosynthesis pathway in this module, which indicates that these genes may respond to and trigger PCD.
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Ganesh I, Choi SC, Bae SW, Park JC, Ryu SB. Heterologous activation of the Hevea PEP16 promoter in the rubber-producing laticiferous tissues of Taraxacum kok-saghyz. Sci Rep 2020; 10:10844. [PMID: 32616731 PMCID: PMC7331677 DOI: 10.1038/s41598-020-67328-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2019] [Accepted: 06/03/2020] [Indexed: 11/16/2022] Open
Abstract
Hevea brasiliensis, the most abundant rubber crop, is used widely for the commercial production of natural rubber. To reduce the risk of a shortage in the supply of natural rubber that may arise from a single major rubber crop, rubber dandelion (Taraxacum kok-saghyz) has been developed as an alternative rubber-producing crop by using a transgenic approach. However, it is necessary to identify a suitable promoter for the transfer of rubber biosynthesis-related genes to the species. In this study, the promoter region of H. brasiliensis PEP16, which was isolated as a potentially important component in rubber biosynthesis, was sequenced and a pPEP16::GUS fusion construct was introduced into T. kok-saghyz. Histological and fluorometric studies using transgenic T. kok-saghyz plants indicated that the HbPEP16 promoter was highly activated in a laticiferous tissue-specific manner under normal growth conditions and that promoter activation was tightly regulated by various hormones and external signals. These findings suggested that the HbPEP16 promoter may be a useful molecular tool for the manipulation of gene expression in the laticiferous tissues of T. kok-saghyz.
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Affiliation(s)
- Irisappan Ganesh
- Plant Systems Engineering Research Center, Korea Research Institute of Bioscience & Biotechnology (KRIBB), Daejeon, 34141, Republic of Korea.,Research & Development Center, DRB Holding Co. LTD, Busan, Republic of Korea.,Department of Chemical Engineering, Pohang University of Science & Technology (POSTECH), Pohang, 37673, Republic of Korea
| | - Sang Chul Choi
- Plant Systems Engineering Research Center, Korea Research Institute of Bioscience & Biotechnology (KRIBB), Daejeon, 34141, Republic of Korea
| | - Sung Woo Bae
- Plant Systems Engineering Research Center, Korea Research Institute of Bioscience & Biotechnology (KRIBB), Daejeon, 34141, Republic of Korea.,Division of Bioengineering, KRIBB School, University of Science and Technology (UST), Daejeon, 34141, Republic of Korea
| | - Jong-Chan Park
- Plant Systems Engineering Research Center, Korea Research Institute of Bioscience & Biotechnology (KRIBB), Daejeon, 34141, Republic of Korea
| | - Stephen Beungtae Ryu
- Plant Systems Engineering Research Center, Korea Research Institute of Bioscience & Biotechnology (KRIBB), Daejeon, 34141, Republic of Korea. .,Division of Bioengineering, KRIBB School, University of Science and Technology (UST), Daejeon, 34141, Republic of Korea.
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36
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Yang T, Sun Y, Wang Y, Zhou L, Chen M, Bian Z, Lian Y, Xuan L, Yuan G, Wang X, Wang C. AtHSPR is involved in GA- and light intensity-mediated control of flowering time and seed set in Arabidopsis. JOURNAL OF EXPERIMENTAL BOTANY 2020; 71:3543-3559. [PMID: 32157303 PMCID: PMC7475253 DOI: 10.1093/jxb/eraa128] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2019] [Accepted: 03/05/2020] [Indexed: 05/15/2023]
Abstract
Flowering is a dynamic and synchronized process, the timing of which is finely tuned by various environmental signals. A T-DNA insertion mutant in Arabidopsis HEAT SHOCK PROTEIN-RELATED (AtHSPR) exhibited late-flowering phenotypes under both long-day (LD) and short-day (SD) conditions compared to the wild-type, while over-expression of AtHSPR promoted flowering. Exogenous application of gibberellin (GA) partially rescued the late-flowering mutant phenotype under both LD and SD conditions, suggesting that AtHSPR is involved in GA biosynthesis and/or the GA signaling that promotes flowering. Under SD or low-light conditions, the Athspr mutant exhibited late flowering together with reduced pollen viability and seed set, defective phenotypes that were partially rescued by GA treatment. qRT-PCR assays confirmed that GA biosynthetic genes were down-regulated, that GA catabolic genes were up-regulated, and that the levels of bioactive GA and its intermediates were decreased in Athspr under both SD and low-light/LD, further suggesting that AtHSPR could be involved in the GA pathway under SD and low-light conditions. Furthermore, AtHSPR interacted in vitro with OFP1 and KNAT5, which are transcriptional repressors of GA20ox1 in GA biosynthesis. Taken together, our findings demonstrate that AtHSPR plays a positive role in GA- and light intensity-mediated regulation of flowering and seed set.
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Affiliation(s)
- Tao Yang
- Ministry of Education Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, Lanzhou, China
| | - Yan Sun
- Ministry of Education Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, Lanzhou, China
| | - Yongli Wang
- Ministry of Education Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, Lanzhou, China
| | - Lina Zhou
- Ministry of Education Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, Lanzhou, China
| | - Mengya Chen
- Ministry of Education Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, Lanzhou, China
| | - Zhiyuan Bian
- Ministry of Education Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, Lanzhou, China
| | - Yuke Lian
- Ministry of Education Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, Lanzhou, China
| | - Lijuan Xuan
- Ministry of Education Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, Lanzhou, China
| | - Guoqiang Yuan
- Ministry of Education Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, Lanzhou, China
| | - Xinyu Wang
- Ministry of Education Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, Lanzhou, China
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Ye J, Tian R, Meng X, Tao P, Li C, Liu G, Chen W, Wang Y, Li H, Ye Z, Zhang Y. Tomato SD1, encoding a kinase-interacting protein, is a major locus controlling stem development. JOURNAL OF EXPERIMENTAL BOTANY 2020; 71:3575-3587. [PMID: 32249906 PMCID: PMC7307856 DOI: 10.1093/jxb/eraa144] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2019] [Accepted: 03/16/2020] [Indexed: 05/20/2023]
Abstract
Stems serve as key determinants of plant development by connecting and supporting parts of the plant body, transporting nutrients important for long-distance communication that affect crop yield, and producing new organs. Nonetheless, studies on the regulation of stem development in crops are rather limited. Here, we found a significant correlation (P<0.001) between stem diameter (SD) and fruit size in tomato (Solanum lycopersicum). We performed a genome-wide association study and identified a novel quantitative trait locus (QTL), SDR9 (stem diameter regulator on CHROMOSOME 9), that co-localized with a gene encoding a kinase-interacting family protein (KIP), which is the most likely candidate gene related to SD (hereafter referred to as SD1). Overexpression of SD1 in thin-stem accessions resulted in increased SD. In contrast, suppressed expression of SD1 in thick-stem accessions using RNA interference exhibited the opposite effect. Further microscopic analyses showed that SD1 affected the stem diameter by controlling the size and number of secondary phloem cells. An 11-bp indel in the promoter region of SD1 that disrupts a gibberellin-responsive cis-element was linked to SD. Expression analysis revealed that SD1 was mainly expressed at the cambium of the stem and positively regulates stem development. Evolutionary analysis revealed that the thick-stem allele of SD1 was selected during the recent process of tomato improvement. Our results provide novel genetic and molecular insight into natural variation of SD in tomato and may accelerate the breeding of high yield tomato.
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Affiliation(s)
- Jie Ye
- The Key Laboratory of Horticultural Plant Biology, Ministry of Education, Huazhong Agricultural University, Wuhan, China
- Boyce Thompson Institute for Plant Research, Cornell University, Ithaca, NY, USA
| | - Ranwen Tian
- The Key Laboratory of Horticultural Plant Biology, Ministry of Education, Huazhong Agricultural University, Wuhan, China
| | - Xiangfei Meng
- The Key Laboratory of Horticultural Plant Biology, Ministry of Education, Huazhong Agricultural University, Wuhan, China
| | - Peiwen Tao
- The Key Laboratory of Horticultural Plant Biology, Ministry of Education, Huazhong Agricultural University, Wuhan, China
| | - Changxing Li
- The Key Laboratory of Horticultural Plant Biology, Ministry of Education, Huazhong Agricultural University, Wuhan, China
| | - Genzhong Liu
- The Key Laboratory of Horticultural Plant Biology, Ministry of Education, Huazhong Agricultural University, Wuhan, China
| | - Weifang Chen
- The Key Laboratory of Horticultural Plant Biology, Ministry of Education, Huazhong Agricultural University, Wuhan, China
| | - Ying Wang
- The Key Laboratory of Horticultural Plant Biology, Ministry of Education, Huazhong Agricultural University, Wuhan, China
| | - Hanxia Li
- The Key Laboratory of Horticultural Plant Biology, Ministry of Education, Huazhong Agricultural University, Wuhan, China
| | - Zhibiao Ye
- The Key Laboratory of Horticultural Plant Biology, Ministry of Education, Huazhong Agricultural University, Wuhan, China
- Correspondence: or
| | - Yuyang Zhang
- The Key Laboratory of Horticultural Plant Biology, Ministry of Education, Huazhong Agricultural University, Wuhan, China
- Correspondence: or
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Guo J, Du M, Lu C, Wang B. NaCl improves reproduction by enhancing starch accumulation in the ovules of the euhalophyte Suaeda salsa. BMC PLANT BIOLOGY 2020; 20:262. [PMID: 32513114 PMCID: PMC7282069 DOI: 10.1186/s12870-020-02468-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/02/2020] [Accepted: 05/26/2020] [Indexed: 05/11/2023]
Abstract
BACKGROUND Halophytes show optimal reproduction under high-salinity conditions. However, the role of NaCl in reproduction and its possible mechanisms in the euhalophyte Suaeda salsa remain to be elucidated. RESULTS We performed transcript profiling of S. salsa flowers and measured starch accumulation in ovules, sugar contents in flowers, and photosynthetic parameters in the leaves of plants supplied with 0 and 200 mM NaCl. Starch accumulation in ovules, sugar contents in flowers and ovules, and net photosynthetic rate and photochemical efficiency in leaves were significantly higher in NaCl-treated plants vs. the control. We identified 14,348 differentially expressed genes in flowers of NaCl-treated vs. control plants. Many of these genes were predicted to be associated with photosynthesis, carbon utilization, and sugar and starch metabolism. These genes are crucial for maintaining photosystem structure, regulating electron transport, and improving photosynthetic efficiency in NaCl-treated plants. In addition, genes encoding fructokinase and sucrose phosphate synthase were upregulated in flowers of NaCl-treated plants. CONCLUSIONS The higher starch and sugar contents in the ovules and flowers of S. salsa in response to NaCl treatment are likely due to the upregulation of genes involved in photosynthesis and carbohydrate metabolism, which increase photosynthetic efficiency and accumulation of photosynthetic products under these conditions.
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Affiliation(s)
- Jianrong Guo
- Shandong Provincial Key Laboratory of Plant Stress, College of Life Sciences, Shandong Normal University, Ji’nan, Shandong 250014 People’s Republic of China
| | - Ming Du
- Shandong Provincial Key Laboratory of Plant Stress, College of Life Sciences, Shandong Normal University, Ji’nan, Shandong 250014 People’s Republic of China
| | - Chaoxia Lu
- Shandong Provincial Key Laboratory of Plant Stress, College of Life Sciences, Shandong Normal University, Ji’nan, Shandong 250014 People’s Republic of China
| | - Baoshan Wang
- Shandong Provincial Key Laboratory of Plant Stress, College of Life Sciences, Shandong Normal University, Ji’nan, Shandong 250014 People’s Republic of China
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Adhikari S, Adhikari A, Ghosh S, Roy D, Azahar I, Basuli D, Hossain Z. Assessment of ZnO-NPs toxicity in maize: An integrative microRNAomic approach. CHEMOSPHERE 2020; 249:126197. [PMID: 32087455 DOI: 10.1016/j.chemosphere.2020.126197] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/24/2019] [Revised: 02/10/2020] [Accepted: 02/11/2020] [Indexed: 06/10/2023]
Abstract
Rapid expansion of nanotechnology and indiscriminate discharge of metal oxide nanoparticles (NPs) into the environment pose a serious hazard to the ecological receptors including plants. To better understand the role of miRNAs in ZnO-NPs stress adaptation, two small RNA libraries were prepared from control and ZnO-NPs (800 ppm, <50 nm particle size) stressed maize leaves. Meager performance of ZnO-NPs treated seedlings was associated with elevated tissue zinc accumulation, enhanced ROS generation, loss of root cell viability, increased foliar MDA content, decrease in chlorophyll and carotenoids contents. Deep sequencing identified 3 (2 known and 1 novel) up- and 77 (73 known and 4 novel) down-regulated miRNAs from ZnO-NPs challenged leaves. GO analysis reveals that potential targets of ZnO-NPs responsive miRNAs regulate diverse biological processes viz. plant growth and development (miR159f-3p, zma_18), ROS homeostasis (miR156b, miR166l), heavy metal transport and detoxification (miR444a, miR167c-3p), photosynthesis (miR171b) etc. Up-regulation of SCARECROW 6 in ZnO-NPs treated leaves might be responsible for suppression of chlorophyll biosynthesis leading to yellowing of leaves. miR156b.1 mediated up-regulation of CALLOSE SYNTHASE also does not give much protection against ZnO-NPs treatment. Taken together, the findings shed light on the miRNA-guided stress regulatory networks involved in plant adaptive responses to ZnO-NPs stress.
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Affiliation(s)
- Sinchan Adhikari
- Plant Stress and Molecular Biology Laboratory, Department of Botany, University of Kalyani, Kalyani, 741235, West Bengal, India
| | - Ayan Adhikari
- Plant Stress and Molecular Biology Laboratory, Department of Botany, University of Kalyani, Kalyani, 741235, West Bengal, India
| | - Supriya Ghosh
- Plant Stress and Molecular Biology Laboratory, Department of Botany, University of Kalyani, Kalyani, 741235, West Bengal, India
| | - Doyel Roy
- Plant Stress and Molecular Biology Laboratory, Department of Botany, University of Kalyani, Kalyani, 741235, West Bengal, India
| | - Ikbal Azahar
- Plant Stress and Molecular Biology Laboratory, Department of Botany, University of Kalyani, Kalyani, 741235, West Bengal, India
| | - Debapriya Basuli
- Plant Stress and Molecular Biology Laboratory, Department of Botany, University of Kalyani, Kalyani, 741235, West Bengal, India
| | - Zahed Hossain
- Plant Stress and Molecular Biology Laboratory, Department of Botany, University of Kalyani, Kalyani, 741235, West Bengal, India.
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40
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Hernández-García J, Briones-Moreno A, Blázquez MA. Origin and evolution of gibberellin signaling and metabolism in plants. Semin Cell Dev Biol 2020; 109:46-54. [PMID: 32414681 DOI: 10.1016/j.semcdb.2020.04.009] [Citation(s) in RCA: 51] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2020] [Revised: 04/16/2020] [Accepted: 04/16/2020] [Indexed: 02/06/2023]
Abstract
Gibberellins modulate multiple aspects of plant behavior. The molecular mechanism by which these hormones are perceived and how this information is translated into transcriptional changes has been elucidated in vascular plants: gibberellins are perceived by the nuclear receptor GID1, which then interacts with the DELLA nuclear proteins and promote their degradation, resulting in the modification of the activity of transcription factors with which DELLAs interact physically. However, several important questions are still pending: how does a single molecule perform such a vast array of functions along plant development? What property do gibberellins add to plant behavior? A closer look at gibberellin action from an evolutionary perspective can help answer these questions. DELLA proteins are conserved in all land plants, and predate the emergence of a full gibberellin metabolic pathway and the GID1 receptor in the ancestor of vascular plants. The origin of gibberellin signaling is linked to the exaptation by GID1 of the N-terminal domain in DELLA, which already acted as a transcriptional coactivator domain in the ancestral DELLA proteins. At least the ability to control plant growth seems to be encoded already in the ancestral DELLA protein too, suggesting that gibberellins' functional diversity is the direct consequence of DELLA protein activity. Finally, comparative network analysis suggests that gibberellin signaling increases the coordination of transcriptional responses, providing a theoretical framework for the role of gibberellins in plant adaptation at the evolutionary scale, which further needs experimental testing.
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Affiliation(s)
- Jorge Hernández-García
- Instituto de Biología Molecular y Celular de Plantas (CSIC-Universidad Politécnica de Valencia), Spain
| | - Asier Briones-Moreno
- Instituto de Biología Molecular y Celular de Plantas (CSIC-Universidad Politécnica de Valencia), Spain
| | - Miguel A Blázquez
- Instituto de Biología Molecular y Celular de Plantas (CSIC-Universidad Politécnica de Valencia), Spain.
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Xin P, Guo Q, Li B, Cheng S, Yan J, Chu J. A Tailored High-Efficiency Sample Pretreatment Method for Simultaneous Quantification of 10 Classes of Known Endogenous Phytohormones. PLANT COMMUNICATIONS 2020; 1:100047. [PMID: 33367242 PMCID: PMC7747986 DOI: 10.1016/j.xplc.2020.100047] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/21/2019] [Revised: 01/08/2020] [Accepted: 04/15/2020] [Indexed: 05/03/2023]
Abstract
One of the hottest topics in plant hormone biology is the crosstalk mechanisms, whereby multiple classes of phytohormones interplay with each other through signaling networks. To better understand the roles of hormonal crosstalks in their complex regulatory networks, it is of high significance to investigate the spatial and temporal distributions of multiple -phytohormones simultaneously from one plant tissue sample. In this study, we develop a high-sensitivity and high-throughput method for the simultaneous quantitative analysis of 44 phytohormone compounds, covering currently known 10 major classes of phytohormones (strigolactones, brassinosteroids, gibberellins, auxin, abscisic acid, jasmonic acid, salicylic acid, cytokinins, ethylene, and polypeptide hormones [e.g., phytosulfokine]) from only 100 mg of plant sample. These compounds were grouped and purified separately with a tailored solid-phase extraction procedure based on their physicochemical properties and then analyzed by LC-MS/MS. The recoveries of our method ranged from 49.6% to 99.9% and the matrix effects from 61.8% to 102.5%, indicating that the overall sample pretreatment design resulted in good purification. The limits of quantitation (LOQs) of our method ranged from 0.06 to 1.29 pg/100 mg fresh weight and its precision was less than 13.4%, indicating high sensitivity and good reproducibility of the method. Tests of our method in different plant matrices demonstrated its wide applicability. Collectively, these advantages will make our method helpful in clarifying the crosstalk networks of phytohormones.
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Affiliation(s)
- Peiyong Xin
- National Centre for Plant Gene Research (Beijing), Innovation Academy for Seed Design, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, P. R. China
- Corresponding author
| | - Qiuhuan Guo
- National Centre for Plant Gene Research (Beijing), Innovation Academy for Seed Design, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, P. R. China
- University of Chinese Academy of Sciences, Beijing 100039, P. R. China
| | - Bingbing Li
- National Centre for Plant Gene Research (Beijing), Innovation Academy for Seed Design, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, P. R. China
- University of Chinese Academy of Sciences, Beijing 100039, P. R. China
| | - Shujing Cheng
- National Centre for Plant Gene Research (Beijing), Innovation Academy for Seed Design, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, P. R. China
- University of Chinese Academy of Sciences, Beijing 100039, P. R. China
| | - Jijun Yan
- National Centre for Plant Gene Research (Beijing), Innovation Academy for Seed Design, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, P. R. China
| | - Jinfang Chu
- National Centre for Plant Gene Research (Beijing), Innovation Academy for Seed Design, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, P. R. China
- University of Chinese Academy of Sciences, Beijing 100039, P. R. China
- Corresponding author
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Groszmann M, Chandler PM, Ross JJ, Swain SM. Manipulating Gibberellin Control Over Growth and Fertility as a Possible Target for Managing Wild Radish Weed Populations in Cropping Systems. FRONTIERS IN PLANT SCIENCE 2020; 11:190. [PMID: 32265944 PMCID: PMC7096587 DOI: 10.3389/fpls.2020.00190] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/15/2019] [Accepted: 02/07/2020] [Indexed: 05/22/2023]
Abstract
Wild radish is a major weed of Australian cereal crops. A rapid establishment, fast growth, and abundant seed production are fundamental to its success as an invasive species. Wild radish has developed resistance to a number of commonly used herbicides increasing the problem. New innovative approaches are needed to control wild radish populations. Here we explore the possibility of pursuing gibberellin (GA) biosynthesis as a novel molecular target for controlling wild radish, and in doing so contribute new insights into GA biology. By characterizing ga 3-oxidase (ga3ox) mutants in Arabidopsis, a close taxonomic relative to wild radish, we showed that even mild GA deficiencies cause considerable reductions in growth and fecundity. This includes an explicit requirement for GA biosynthesis in successful female fertility. Similar defects were reproducible in wild radish via chemical inhibition of GA biosynthesis, confirming GA action as a possible new target for controlling wild radish populations. Two possible targeting approaches are considered; the first would involve developing a species-specific inhibitor that selectively inhibits GA production in wild radish over cereal crops. The second, involves making crop species insensitive to GA repression, allowing the use of existing broad spectrum GA inhibitors to control wild radish populations. Toward the first concept, we cloned and characterized two wild radish GA3OX genes, identifying protein differences that appear sufficient for selective inhibition of dicot over monocot GA3OX activity. We developed a novel yeast-based approach to assay GA3OX activity as part of the molecular characterization, which could be useful for future screening of inhibitory compounds. For the second approach, we demonstrated that a subset of GA associated sln1/Rht-1 overgrowth mutants, recently generated in cereals, are insensitive to GA reductions brought on by the general GA biosynthesis inhibitor, paclobutrazol. The location of these mutations within sln1/Rht-1, offers additional insight into the functional domains of these important GA signaling proteins. Our early assessment suggests that targeting the GA pathway could be a viable inclusion into wild radish management programs that warrants further investigation. In drawing this conclusion, we provided new insights into GA regulated reproductive development and molecular characteristics of GA metabolic and signaling proteins.
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Affiliation(s)
- Michael Groszmann
- Division of Plant Sciences, Research School of Biology, Australian National University, Canberra, ACT, Australia
- CSIRO Agriculture and Food, Canberra, ACT, Australia
| | - Peter M. Chandler
- Division of Plant Sciences, Research School of Biology, Australian National University, Canberra, ACT, Australia
| | - John J. Ross
- School of Biological Sciences, University of Tasmania, Hobart, TAS, Australia
| | - Steve M. Swain
- Division of Plant Sciences, Research School of Biology, Australian National University, Canberra, ACT, Australia
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Abd-Hamid NA, Ahmad-Fauzi MI, Zainal Z, Ismail I. Diverse and dynamic roles of F-box proteins in plant biology. PLANTA 2020; 251:68. [PMID: 32072251 DOI: 10.1007/s00425-020-03356-8] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2019] [Accepted: 02/05/2020] [Indexed: 05/23/2023]
Abstract
The SCF complex is a widely studied multi-subunit ring E3 ubiquitin ligase that tags targeted proteins with ubiquitin for protein degradation by the ubiquitin 26S-proteasome system (UPS). The UPS is an important system that generally keeps cellular events tightly regulated by purging misfolded or damaged proteins and selectively degrading important regulatory proteins. The specificity of this post-translational regulation is controlled by F-box proteins (FBPs) via selective recognition of a protein-protein interaction motif at the C-terminal domain. Hence, FBPs are pivotal proteins in determining the plant response in multiple scenarios. It is not surprising that the FBP family is one of the largest protein families in the plant kingdom. In this review, the roles of FBPs, specifically in plants, are compiled to provide insights into their involvement in secondary metabolites, plant stresses, phytohormone signalling, plant developmental processes and miRNA biogenesis.
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Affiliation(s)
- Nur-Athirah Abd-Hamid
- Institute of Systems Biology, Universiti Kebangsaan Malaysia, 43600, Bangi, Selangor, Malaysia
| | - Muhammad-Izzat Ahmad-Fauzi
- Department of Biological Sciences and Biotechnology, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600, Bangi, Selangor, Malaysia
| | - Zamri Zainal
- Institute of Systems Biology, Universiti Kebangsaan Malaysia, 43600, Bangi, Selangor, Malaysia
- Department of Biological Sciences and Biotechnology, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600, Bangi, Selangor, Malaysia
| | - Ismanizan Ismail
- Institute of Systems Biology, Universiti Kebangsaan Malaysia, 43600, Bangi, Selangor, Malaysia.
- Department of Biological Sciences and Biotechnology, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600, Bangi, Selangor, Malaysia.
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Huang H, Gong Y, Liu B, Wu D, Zhang M, Xie D, Song S. The DELLA proteins interact with MYB21 and MYB24 to regulate filament elongation in Arabidopsis. BMC PLANT BIOLOGY 2020; 20:64. [PMID: 32033528 PMCID: PMC7006197 DOI: 10.1186/s12870-020-2274-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2019] [Accepted: 02/03/2020] [Indexed: 05/24/2023]
Abstract
BACKGROUND Gibberellin (GA) and jasmonate (JA) are two essential phytohormones for filament elongation in Arabidopsis. GA and JA trigger degradation of DELLAs and JASMONATE ZIM-domain (JAZ) proteins through SCFSLY1 and SCFCOI1 separately to activate filament elongation. In JA pathway, JAZs interact with MYB21 and MYB24 to control filament elongation. However, little is known how DELLAs regulate filament elongation. RESULTS Here we showed that DELLAs interact with MYB21 and MYB24, and that R2R3 domains of MYB21 and MYB24 are responsible for interaction with DELLAs. Furthermore, we demonstrated that DELLA and JAZ proteins coordinately repress the transcriptional function of MYB21 and MYB24 to inhibit filament elongation. CONCLUSION We discovered that DELLAs interact with MYB21 and MYB24, and that DELLAs and JAZs attenuate the transcriptional function of MYB21 and MYB24 to control filament elongation. This study reveals a novel cross-talk mechanism of GA and JA in the regulation of filament elongation in Arabidopsis.
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Affiliation(s)
- Huang Huang
- Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, Beijing University of Agriculture, Beijing, 102206, China.
| | - Yilong Gong
- Beijing Key Laboratory of Plant Gene Resources and Biotechnology for Carbon Reduction and Environmental Improvement, RNA Center, College of Life Sciences, Capital Normal University, Beijing, 100048, China
| | - Bei Liu
- Beijing Key Laboratory of Plant Gene Resources and Biotechnology for Carbon Reduction and Environmental Improvement, RNA Center, College of Life Sciences, Capital Normal University, Beijing, 100048, China
| | - Dewei Wu
- Jiangsu Provincial Key Laboratory of Crop Genetics and Physiology, Yangzhou University, Yangzhou, 225009, China
| | - Min Zhang
- Beijing Key Laboratory of Plant Gene Resources and Biotechnology for Carbon Reduction and Environmental Improvement, RNA Center, College of Life Sciences, Capital Normal University, Beijing, 100048, China
| | - Daoxin Xie
- School of Life Sciences, Tsinghua University, Beijing, 100084, China
| | - Susheng Song
- Beijing Key Laboratory of Plant Gene Resources and Biotechnology for Carbon Reduction and Environmental Improvement, RNA Center, College of Life Sciences, Capital Normal University, Beijing, 100048, China.
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Guo J, Lu C, Zhao F, Gao S, Wang B. Improved reproductive growth of euhalophyte Suaeda salsa under salinity is correlated with altered phytohormone biosynthesis and signal transduction. FUNCTIONAL PLANT BIOLOGY : FPB 2020; 47:170-183. [PMID: 31941563 DOI: 10.1071/fp19215] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/04/2019] [Accepted: 10/20/2019] [Indexed: 05/27/2023]
Abstract
Phytohormones are essential for plant reproductive growth. Salinity limits crop reproductive growth and yield, but improves reproductive growth of euhalophytes. However, little is known about the mechanisms underlying salinity's effects on plant reproductive growth. To elucidate the role of plant hormones in flower development of the euhalophyte Suaeda salsa under saline conditions, we analysed endogenous gibberellic acid (GA3,4), indoleacetic acid (IAA), zeatin riboside (ZR), abscisic acid (ABA), and brassinosteroids (BRs) during flowering in control (0 mM) and NaCl-treated (200 mM) plants. At the end of vegetative growth, endogenous GA3, GA4, ABA and BR contents in stems of NaCl-treated plants were significantly higher than those in controls. During flowering, GA3, GA4, IAA and ZR contents showed the most significant enhancement in flower organs of plants treated with NaCl when compared with controls. Additionally, genes related to ZR, IAA, GA, BR and ABA biosynthesis and plant hormone signal transduction, such as those encoding CYP735A, CYP85A, GID1, NCED, PIF4, AHP, TCH4, SnRK2 and ABF, were upregulated in S. salsa flowers from NaCl-treated plants. These results suggest that coordinated upregulation of genes involved in phytohormone biosynthesis and signal transduction contributes to the enhanced reproductive growth of S. salsa under salinity.
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Affiliation(s)
- Jianrong Guo
- Shandong Provincial Key Laboratory of Plant Stress, College of Life Science, Shandong Normal University, Ji'nan, Shandong, 250014, PR China
| | - Chaoxia Lu
- Shandong Provincial Key Laboratory of Plant Stress, College of Life Science, Shandong Normal University, Ji'nan, Shandong, 250014, PR China
| | - Fangcheng Zhao
- Shandong Provincial Key Laboratory of Plant Stress, College of Life Science, Shandong Normal University, Ji'nan, Shandong, 250014, PR China
| | - Shuai Gao
- Shandong Provincial Key Laboratory of Plant Stress, College of Life Science, Shandong Normal University, Ji'nan, Shandong, 250014, PR China
| | - Baoshan Wang
- Shandong Provincial Key Laboratory of Plant Stress, College of Life Science, Shandong Normal University, Ji'nan, Shandong, 250014, PR China; and Corresponding author.
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Lei X, Liu B. Tapetum-Dependent Male Meiosis Progression in Plants: Increasing Evidence Emerges. FRONTIERS IN PLANT SCIENCE 2020; 10:1667. [PMID: 32010157 PMCID: PMC6979054 DOI: 10.3389/fpls.2019.01667] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/21/2019] [Accepted: 11/27/2019] [Indexed: 05/28/2023]
Abstract
In higher plants, male meiosis is a key process during microsporogenesis and is crucial for male fertility and seed set. Meiosis involves a highly dynamic organization of chromosomes and cytoskeleton and specifically takes place within sexual cells. However, studies in multiple plant species have suggested that the normal development of tapetum, the somatic cell layer surrounding the developing male meiocytes, is indispensable for the completion of the male meiotic cell cycle. Disrupted tapetum development causes alterations in the expression of a large range of genes involved in male reproduction. Moreover, recent experiments suggest that small RNAs (sRNAs) present in the anthers, including microRNAs (miRNAs) and phased, secondary, small interfering RNAs (phasiRNAs), play a potential but important role in controlling male meiosis, either by influencing the expression of meiotic genes in the meiocytes or through other unclear mechanisms, supporting the hypothesis that male meiosis is non-cell autonomously regulated. In this mini review, we summarize the recorded meiotic defects that occur in plants with defective tapetum development in both Arabidopsis and crops. Thereafter, we outline the latest understanding on the molecular mechanisms that potentially underpin the tapetum-dependent regulation of male meiosis, and we especially discuss the regulatory role of sRNAs. At the end, we propose several outstanding questions that should be addressed in future studies.
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Affiliation(s)
- Xiaoning Lei
- School of Public Health, Key Lab of Public Health Safety of the Ministry of Education and NHC Key Laboratory of Health Technology Assessment, Fudan University, Shanghai, China
| | - Bing Liu
- Hubei Provincial Key Laboratory for Protection and Application of Special Plants in Wuling Area of China, College of Life Sciences, South-Central University for Nationalities, Wuhan, China
- Key Laboratory for Biotechnology of the State Ethnic Affairs Commission, College of Life Sciences, South-Central University for Nationalities, Wuhan, China
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47
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Marciniak K, Przedniczek K. Comprehensive Insight into Gibberellin- and Jasmonate-Mediated Stamen Development. Genes (Basel) 2019; 10:genes10100811. [PMID: 31618967 PMCID: PMC6827089 DOI: 10.3390/genes10100811] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2019] [Revised: 09/30/2019] [Accepted: 10/11/2019] [Indexed: 02/07/2023] Open
Abstract
In flowering plants, proper development of male generative organs is required for successful sexual reproduction. Stamen primordia arise in the third whorl of floral organs and subsequently differentiate into filaments and anthers. The early phase of stamen development, in which meiosis occurs, is followed by a late developmental phase, which consists of filament elongation coordinated with pollen maturation, anther dehiscence and finally viable pollen grain release. Stamen development and function are modulated by phytohormones, with a key role of gibberellins (GAs) and jasmonates (JAs). Long-term, extensive investigations, mainly involving GA/JA-deficient and GA/JA-response mutants, have led to a better understanding of the hormone-dependent molecular mechanisms of stamen development. In several species, the principal functions of GAs are to stimulate filament elongation through increased cell elongation and to promote anther locule opening. In the GA-dependent regulation of early stamen development, both the tapetum and developing pollen were identified as major targets. JAs mainly control the late stages of stamen development, such as filament elongation, viable pollen formation and anther dehiscence. A hierarchical relationship between GAs and JAs was recognized mainly in the control of late stamen development. By repressing DELLA proteins, GAs modulate the transcriptional activity of JA biosynthesis genes to promote JA production. A high level of JAs induces a complex of transcription factors crucial for normal stamen development.
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Affiliation(s)
- Katarzyna Marciniak
- Chair of Plant Physiology and Biotechnology, Institute of Biology, Faculty of Biological and Veterinary Sciences, Nicolaus Copernicus University, Lwowska 1 St, 87-100 Toruń, Poland.
| | - Krzysztof Przedniczek
- Chair of Plant Physiology and Biotechnology, Institute of Biology, Faculty of Biological and Veterinary Sciences, Nicolaus Copernicus University, Lwowska 1 St, 87-100 Toruń, Poland.
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Wulff N, Ernst HA, Jørgensen ME, Lambertz S, Maierhofer T, Belew ZM, Crocoll C, Motawia MS, Geiger D, Jørgensen FS, Mirza O, Nour-Eldin HH. An Optimized Screen Reduces the Number of GA Transporters and Provides Insights Into Nitrate Transporter 1/Peptide Transporter Family Substrate Determinants. FRONTIERS IN PLANT SCIENCE 2019; 10:1106. [PMID: 31632416 PMCID: PMC6785635 DOI: 10.3389/fpls.2019.01106] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/21/2019] [Accepted: 08/13/2019] [Indexed: 05/17/2023]
Abstract
Based on recent in vitro data, a relatively large number of the plant nitrate transporter 1/peptide transporter family (NPF) proteins have been suggested to function as gibberellic acid (GA) transporters. Most GA transporting NPF proteins also appear to transport other structurally unrelated phytohormones or metabolites. Several of the GAs used in previous in vitro assays are membrane permeable weak organic acids whose movement across membranes are influenced by the pH-sensitive ion-trap mechanism. Moreover, a large proportion of in vitro GA transport activities have been demonstrated indirectly via long-term yeast-based GA-dependent growth assays that are limited to detecting transport of bioactive GAs. Thus, there is a need for an optimized transport assay for identifying and characterizing GA transport. Here, we develop an improved transport assay in Xenopus laevis oocytes, wherein we directly measure movement of six different GAs across oocyte membranes over short time. We show that membrane permeability of GAs in oocytes can be predicted based on number of oxygen atoms and that several GAs do not diffuse over membranes regardless of changes in pH values. In addition, we show that small changes in internal cellular pH can result in strongly altered distribution of membrane permeable phytohormones. This prompts caution when interpreting heterologous transport activities. We use our transport assay to screen all Arabidopsis thaliana NPF proteins for transport activity towards six GAs (two membrane permeable and four non-permeable). The results presented here, significantly reduce the number of bona fide NPF GA transporters in Arabidopsis and narrow the activity to fewer subclades within the family. Furthermore, to gain first insight into the molecular determinants of substrate specificities toward organic molecules transported in the NPF, we charted all surface exposed amino acid residues in the substrate-binding cavity and correlated them to GA transport. This analysis suggests distinct residues within the substrate-binding cavity that are shared between GA transporting NPF proteins; the potential roles of these residues in determining substrate specificity are discussed.
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Affiliation(s)
- Nikolai Wulff
- DynaMo Center, Copenhagen Plant Science Centre, Department of Plant and Environmental Sciences, University of Copenhagen, Frederiksberg, Denmark
| | | | - Morten Egevang Jørgensen
- DynaMo Center, Copenhagen Plant Science Centre, Department of Plant and Environmental Sciences, University of Copenhagen, Frederiksberg, Denmark
- Julius-von-Sachs-Institute, Molecular Plant Physiology and Biophysics, University Würzburg, Würzburg, Germany
- Carlsberg Research Laboratory, Copenhagen, Denmark
| | - Sophie Lambertz
- DynaMo Center, Copenhagen Plant Science Centre, Department of Plant and Environmental Sciences, University of Copenhagen, Frederiksberg, Denmark
| | - Tobias Maierhofer
- Julius-von-Sachs-Institute, Molecular Plant Physiology and Biophysics, University Würzburg, Würzburg, Germany
| | - Zeinu Mussa Belew
- DynaMo Center, Copenhagen Plant Science Centre, Department of Plant and Environmental Sciences, University of Copenhagen, Frederiksberg, Denmark
| | - Christoph Crocoll
- DynaMo Center, Copenhagen Plant Science Centre, Department of Plant and Environmental Sciences, University of Copenhagen, Frederiksberg, Denmark
| | - Mohammed Saddik Motawia
- Center for Plant Plasticity, Department of Plant and Environmental Sciences, University of Copenhagen, Frederiksberg, Denmark
| | - Dietmar Geiger
- Julius-von-Sachs-Institute, Molecular Plant Physiology and Biophysics, University Würzburg, Würzburg, Germany
| | | | - Osman Mirza
- Department of Drug Design and Pharmacology, University of Copenhagen, Copenhagen, Denmark
| | - Hussam Hassan Nour-Eldin
- DynaMo Center, Copenhagen Plant Science Centre, Department of Plant and Environmental Sciences, University of Copenhagen, Frederiksberg, Denmark
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Ogami T, Yasui H, Yoshimura A, Yamagata Y. Identification of Anther Length QTL and Construction of Chromosome Segment Substitution Lines of Oryza longistaminata. PLANTS 2019; 8:plants8100388. [PMID: 31569590 PMCID: PMC6843423 DOI: 10.3390/plants8100388] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/30/2019] [Revised: 09/22/2019] [Accepted: 09/29/2019] [Indexed: 02/04/2023]
Abstract
Life histories and breeding systems strongly affect the genetic diversity of seed plants, but the genetic architectures that promote outcrossing in Oryza longistaminata, a perennial wild species in Africa, are not understood. We conducted a genetic analysis of the anther length of O. longistaminata accession W1508 using advanced backcross quantitative trait locus (QTL) analysis and chromosomal segment substitution lines (CSSLs) in the genetic background of O. sativa Taichung 65 (T65), with simple sequence repeat markers. QTL analysis of the BC3F1 population (n = 100) revealed that four main QTL regions on chromosomes 3, 5, and 6 were associated to anther length. We selected a minimum set of BC3F2 plants for the development of CSSLs to cover as much of the W1508 genome as possible. The additional minor QTLs were suggested in the regional QTL analysis, using 21 to 24 plants in each of the selected BC3F2 population. The main QTLs found on chromosomes 3, 5, and 6 were validated and designated qATL3, qATL5, qATL6.1, and qATL6.2, as novel QTLs identified in O. longistaminata in the mapping populations of 94, 88, 70, and 95 BC3F4 plants. qATL3, qATL5, and qATL6.1 likely contributed to anther length by cell elongation, whereas qATL6.2 likely contributed by cell multiplication. The QTLs were confirmed again in an evaluation of the W1508ILs. In several chromosome segment substitution lines without the four validated QTLs, the anthers were also longer than those of T65, suggesting that other QTLs also increase anther length in W1508. The cloning and diversity analyses of genes conferring anther length QTLs promotes utilization of the genetic resources of wild species, and the understanding of haplotype evolution on the differentiation of annuality and perenniality in the genus Oryza.
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Affiliation(s)
- Takayuki Ogami
- Plant Breeding Laboratory, Faculty of Agriculture, Kyushu University. 744, Motooka, Nishi-ku, Fukuoka 819-0395, Japan.
| | - Hideshi Yasui
- Plant Breeding Laboratory, Faculty of Agriculture, Kyushu University. 744, Motooka, Nishi-ku, Fukuoka 819-0395, Japan.
| | - Atsushi Yoshimura
- Plant Breeding Laboratory, Faculty of Agriculture, Kyushu University. 744, Motooka, Nishi-ku, Fukuoka 819-0395, Japan.
| | - Yoshiyuki Yamagata
- Plant Breeding Laboratory, Faculty of Agriculture, Kyushu University. 744, Motooka, Nishi-ku, Fukuoka 819-0395, Japan.
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50
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Millar AA, Lohe A, Wong G. Biology and Function of miR159 in Plants. PLANTS 2019; 8:plants8080255. [PMID: 31366066 PMCID: PMC6724108 DOI: 10.3390/plants8080255] [Citation(s) in RCA: 63] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/10/2019] [Revised: 07/18/2019] [Accepted: 07/23/2019] [Indexed: 12/26/2022]
Abstract
MicroR159 (miR159) is ancient, being present in the majority of land plants where it targets a class of regulatory genes called GAMYB or GAMYB-like via highly conserved miR159-binding sites. These GAMYB genes encode R2R3 MYB domain transcription factors that transduce the gibberellin (GA) signal in the seed aleurone and the anther tapetum. Here, GAMYB plays a conserved role in promoting the programmed cell death of these tissues, where miR159 function appears weak. By contrast, GAMYB is not involved in GA-signaling in vegetative tissues, but rather its expression is deleterious, leading to the inhibition of growth and development. Here, the major function of miR159 is to mediate strong silencing of GAMYB to enable normal growth. Highlighting this requirement of strong silencing are conserved RNA secondary structures associated with the miR159-binding site in GAMYB mRNA that promotes miR159-mediated repression. Although the miR159-GAMYB pathway in vegetative tissues has been implicated in a number of different functions, presently no conserved role for this pathway has emerged. We will review the current knowledge of the different proposed functions of miR159, and how this ancient pathway has been used as a model to help form our understanding of miRNA biology in plants.
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Affiliation(s)
- Anthony A Millar
- Division of Plant Science, Research School of Biology, The Australian National University, Canberra ACT 2601, Australia.
| | - Allan Lohe
- Division of Plant Science, Research School of Biology, The Australian National University, Canberra ACT 2601, Australia
| | - Gigi Wong
- Division of Plant Science, Research School of Biology, The Australian National University, Canberra ACT 2601, Australia
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