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Basu A, Adams AN, Degnan PH, Vanderpool CK. Determinants of raffinose family oligosaccharide use in Bacteroides species. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.06.07.597959. [PMID: 38895307 PMCID: PMC11185731 DOI: 10.1101/2024.06.07.597959] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/21/2024]
Abstract
Bacteroides species are successful colonizers of the human gut and can utilize a wide variety of complex polysaccharides and oligosaccharides that are indigestible by the host. To do this, they use enzymes encoded in Polysaccharide Utilization Loci (PULs). While recent work has uncovered the PULs required for use of some polysaccharides, how Bacteroides utilize smaller oligosaccharides is less well studied. Raffinose family oligosaccharides (RFOs) are abundant in plants, especially legumes, and consist of variable units of galactose linked by α-1,6 bonds to a sucrose (glucose α-1-β-2 fructose) moiety. Previous work showed that an α-galactosidase, BT1871, is required for RFO utilization in Bacteroides thetaiotaomicron. Here, we identify two different types of mutations that increase BT1871 mRNA levels and improve B. thetaiotaomicron growth on RFOs. First, a novel spontaneous duplication of BT1872 and BT1871 places these genes under control of a ribosomal promoter, driving high BT1871 transcription. Second, nonsense mutations in a gene encoding the PUL24 anti-sigma factor likewise increase BT1871 transcription. We then show that hydrolases from PUL22 work together with BT1871 to break down the sucrose moiety of RFOs and determine that the master regulator of carbohydrate utilization (BT4338) plays a role in RFO utilization in B. thetaiotaomicron. Examining the genomes of other Bacteroides species, we found homologs of BT1871 in subset and show that representative strains of species containing a BT1871 homolog grew better on melibiose than species that lack a BT1871 homolog. Altogether, our findings shed light on how an important gut commensal utilizes an abundant dietary oligosaccharide.
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Affiliation(s)
- Anubhav Basu
- Department of Microbiology, University of Illinois Urbana-Champaign, Urbana, Illinois, USA
| | - Amanda N.D. Adams
- Department of Microbiology, University of Illinois Urbana-Champaign, Urbana, Illinois, USA
- Department of Immunology and Infectious Diseases, Harvard T.H. Chan School of Public Health, Boston, Massachusetts, USA
| | - Patrick H. Degnan
- Department of Microbiology and Plant Pathology, University of California Riverside, Riverside, California, USA
| | - Carin K. Vanderpool
- Department of Microbiology, University of Illinois Urbana-Champaign, Urbana, Illinois, USA
- Carl R. Woese Institute for Genomic Biology, University of Illinois Urbana-Champaign, Urbana, Illinois, USA
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2
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Meneses-Reyes GI, Rodriguez-Bustos DL, Cuevas-Velazquez CL. Macromolecular crowding sensing during osmotic stress in plants. Trends Biochem Sci 2024; 49:480-493. [PMID: 38514274 DOI: 10.1016/j.tibs.2024.02.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2023] [Revised: 02/07/2024] [Accepted: 02/16/2024] [Indexed: 03/23/2024]
Abstract
Osmotic stress conditions occur at multiple stages of plant life. Changes in water availability caused by osmotic stress induce alterations in the mechanical properties of the plasma membrane, its interaction with the cell wall, and the concentration of macromolecules in the cytoplasm. We summarize the reported players involved in the sensing mechanisms of osmotic stress in plants. We discuss how changes in macromolecular crowding are perceived intracellularly by intrinsically disordered regions (IDRs) in proteins. Finally, we review methods for dynamically monitoring macromolecular crowding in living cells and discuss why their implementation is required for the discovery of new plant osmosensors. Elucidating the osmosensing mechanisms will be essential for designing strategies to improve plant productivity in the face of climate change.
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Affiliation(s)
- G I Meneses-Reyes
- Departamento de Bioquímica, Facultad de Química, Universidad Nacional Autónoma de México, Ciudad de México 04510, Mexico
| | - D L Rodriguez-Bustos
- Departamento de Bioquímica, Facultad de Química, Universidad Nacional Autónoma de México, Ciudad de México 04510, Mexico
| | - C L Cuevas-Velazquez
- Departamento de Bioquímica, Facultad de Química, Universidad Nacional Autónoma de México, Ciudad de México 04510, Mexico.
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Gonçalves JDP, Gasparini K, Picoli EADT, Costa MDBL, Araujo WL, Zsögön A, Ribeiro DM. Metabolic control of seed germination in legumes. JOURNAL OF PLANT PHYSIOLOGY 2024; 295:154206. [PMID: 38452650 DOI: 10.1016/j.jplph.2024.154206] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2023] [Revised: 02/19/2024] [Accepted: 02/23/2024] [Indexed: 03/09/2024]
Abstract
Seed development, dormancy, and germination are connected with changes in metabolite levels. Not surprisingly, a complex regulatory network modulates biosynthesis and accumulation of storage products. Seed development has been studied profusely in Arabidopsis thaliana and has provided valuable insights into the genetic control of embryo development. However, not every inference applies to crop legumes, as these have been domesticated and selected for high seed yield and specific metabolic profiles and fluxes. Given its enormous economic relevance, considerable work has contributed to shed light on the mechanisms that control legume seed growth and germination. Here, we summarize recent progress in the understanding of regulatory networks that coordinate seed metabolism and development in legumes.
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Affiliation(s)
- Júlia de Paiva Gonçalves
- Departamento de Biologia Vegetal, Universidade Federal de Viçosa, CEP 36570-900, Viçosa, MG, Brazil; National Institute of Science and Technology on Plant Physiology Under Stress Conditions, Departamento de Biologia Vegetal, Universidade Federal de Viçosa, 36570-900, Viçosa, Minas Gerais, Brazil.
| | - Karla Gasparini
- Departamento de Biologia Vegetal, Universidade Federal de Viçosa, CEP 36570-900, Viçosa, MG, Brazil; National Institute of Science and Technology on Plant Physiology Under Stress Conditions, Departamento de Biologia Vegetal, Universidade Federal de Viçosa, 36570-900, Viçosa, Minas Gerais, Brazil.
| | | | | | - Wagner Luiz Araujo
- Departamento de Biologia Vegetal, Universidade Federal de Viçosa, CEP 36570-900, Viçosa, MG, Brazil; National Institute of Science and Technology on Plant Physiology Under Stress Conditions, Departamento de Biologia Vegetal, Universidade Federal de Viçosa, 36570-900, Viçosa, Minas Gerais, Brazil.
| | - Agustin Zsögön
- Departamento de Biologia Vegetal, Universidade Federal de Viçosa, CEP 36570-900, Viçosa, MG, Brazil; National Institute of Science and Technology on Plant Physiology Under Stress Conditions, Departamento de Biologia Vegetal, Universidade Federal de Viçosa, 36570-900, Viçosa, Minas Gerais, Brazil.
| | - Dimas Mendes Ribeiro
- Departamento de Biologia Vegetal, Universidade Federal de Viçosa, CEP 36570-900, Viçosa, MG, Brazil; National Institute of Science and Technology on Plant Physiology Under Stress Conditions, Departamento de Biologia Vegetal, Universidade Federal de Viçosa, 36570-900, Viçosa, Minas Gerais, Brazil.
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4
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Hashimshony T, Levin L, Fröbius AC, Dahan N, Chalifa-Caspi V, Hamo R, Gabai-Almog O, Blais I, Assaraf YG, Lubzens E. A transcriptomic examination of encased rotifer embryos reveals the developmental trajectory leading to long-term dormancy; are they "animal seeds"? BMC Genomics 2024; 25:119. [PMID: 38281016 PMCID: PMC10821554 DOI: 10.1186/s12864-024-09961-1] [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: 06/22/2023] [Accepted: 01/02/2024] [Indexed: 01/29/2024] Open
Abstract
BACKGROUND Organisms from many distinct evolutionary lineages acquired the capacity to enter a dormant state in response to environmental conditions incompatible with maintaining normal life activities. Most studied organisms exhibit seasonal or annual episodes of dormancy, but numerous less studied organisms enter long-term dormancy, lasting decades or even centuries. Intriguingly, many planktonic animals produce encased embryos known as resting eggs or cysts that, like plant seeds, may remain dormant for decades. Herein, we studied a rotifer Brachionus plicatilis as a model planktonic species that forms encased dormant embryos via sexual reproduction and non-dormant embryos via asexual reproduction and raised the following questions: Which genes are expressed at which time points during embryogenesis? How do temporal transcript abundance profiles differ between the two types of embryos? When does the cell cycle arrest? How do dormant embryos manage energy? RESULTS As the molecular developmental kinetics of encased embryos remain unknown, we employed single embryo RNA sequencing (CEL-seq) of samples collected during dormant and non-dormant embryogenesis. We identified comprehensive and temporal transcript abundance patterns of genes and their associated enriched functional pathways. Striking differences were uncovered between dormant and non-dormant embryos. In early development, the cell cycle-associated pathways were enriched in both embryo types but terminated with fewer nuclei in dormant embryos. As development progressed, the gene transcript abundance profiles became increasingly divergent between dormant and non-dormant embryos. Organogenesis was suspended in dormant embryos, concomitant with low transcript abundance of homeobox genes, and was replaced with an ATP-poor preparatory phase characterized by very high transcript abundance of genes encoding for hallmark dormancy proteins (e.g., LEA proteins, sHSP, and anti-ROS proteins, also found in plant seeds) and proteins involved in dormancy exit. Surprisingly, this period appeared analogous to the late maturation phase of plant seeds. CONCLUSIONS The study highlights novel divergent temporal transcript abundance patterns between dormant and non-dormant embryos. Remarkably, several convergent functional solutions appear during the development of resting eggs and plant seeds, suggesting a similar preparatory phase for long-term dormancy. This study accentuated the broad novel molecular features of long-term dormancy in encased animal embryos that behave like "animal seeds".
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Affiliation(s)
- Tamar Hashimshony
- Faculty of Biology, Technion-Israel Institute of Technology, Haifa, Israel
| | - Liron Levin
- National Institute of Biotechnology in the Negev, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - Andreas C Fröbius
- Molecular Andrology, Biomedical Research Center Seltersberg (BFS), Justus Liebig University Gießen, Gießen, Germany.
| | - Nitsan Dahan
- Interdisciplinary Center for Life Sciences and Engineering, Technion-Israel Institute of Technology, Haifa, Israel
| | - Vered Chalifa-Caspi
- National Institute of Biotechnology in the Negev, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - Reini Hamo
- Faculty of Biology, Technion-Israel Institute of Technology, Haifa, Israel
| | - Oshri Gabai-Almog
- Faculty of Biology, Technion-Israel Institute of Technology, Haifa, Israel
| | - Idit Blais
- Department of Obstetrics and Gynecology, Division of Reproductive Endocrinology and IVF, Lady Davis Carmel Medical Center, Haifa, Israel
| | - Yehuda G Assaraf
- The Fred Wyszkowski Cancer Research Laboratory, Faculty of Biology, Technion-Israel Institute of Technology, Haifa, Israel
| | - Esther Lubzens
- Faculty of Biology, Technion-Israel Institute of Technology, Haifa, Israel.
- (Retired) Israel Oceanographic and Limnological Research, Haifa, Israel.
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Bárta J, Roudnický P, Jarošová M, Zdráhal Z, Stupková A, Bártová V, Krejčová Z, Kyselka J, Filip V, Říha V, Lorenc F, Bedrníček J, Smetana P. Proteomic Profiles of Whole Seeds, Hulls, and Dehulled Seeds of Two Industrial Hemp ( Cannabis sativa L.) Cultivars. PLANTS (BASEL, SWITZERLAND) 2023; 13:111. [PMID: 38202419 PMCID: PMC10780685 DOI: 10.3390/plants13010111] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2023] [Revised: 12/20/2023] [Accepted: 12/27/2023] [Indexed: 01/12/2024]
Abstract
As a source of nutritionally important components, hemp seeds are often dehulled for consumption and food applications by removing the hard hulls, which increases their nutritional value. The hulls thus become waste, although they may contain valuable protein items, about which there is a lack of information. The present work is therefore aimed at evaluating the proteome of hemp (Cannabis sativa L.) at the whole-seed, dehulled seed, and hull levels. The evaluation was performed on two cultivars, Santhica 27 and Uso-31, using LC-MS/MS analysis. In total, 2833 protein groups (PGs) were identified, and their relative abundances were determined. A set of 88 PGs whose abundance exceeded 1000 ppm (MP88 set) was considered for further evaluation. The PGs of the MP88 set were divided into ten protein classes. Seed storage proteins were found to be the most abundant protein class: the averages of the cultivars were 65.5%, 71.3%, and 57.5% for whole seeds, dehulled seeds, and hulls, respectively. In particular, 11S globulins representing edestin (three PGs) were found, followed by 7S vicilin-like proteins (four PGs) and 2S albumins (two PGs). The storage 11S globulins in Santhica 27 and Uso-31 were found to have a higher relative abundance in the dehulled seed proteome (summing to 58.6 and 63.2%) than in the hull proteome (50.5 and 54%), respectively. The second most abundant class of proteins was oleosins, which are part of oil-body membranes. PGs belonging to metabolic proteins (e.g., energy metabolism, nucleic acid metabolism, and protein synthesis) and proteins related to the defence and stress responses were more abundant in the hulls than in the dehulled seeds. The hulls can, therefore, be an essential source of proteins, especially for medical and biotechnological applications. Proteomic analysis has proven to be a valuable tool for studying differences in the relative abundance of proteins between dehulled hemp seeds and their hulls among different cultivars.
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Affiliation(s)
- Jan Bárta
- Department of Plant Production, Faculty of Agriculture and Technology, University of South Bohemia, 370 05 České Budějovice, Czech Republic; (J.B.); (M.J.); (A.S.)
| | - Pavel Roudnický
- Mendel Centre of Plant Genomics and Proteomics, Central European Institute of Technology, Masaryk University, 625 00 Brno, Czech Republic; (P.R.); (Z.Z.)
| | - Markéta Jarošová
- Department of Plant Production, Faculty of Agriculture and Technology, University of South Bohemia, 370 05 České Budějovice, Czech Republic; (J.B.); (M.J.); (A.S.)
| | - Zbyněk Zdráhal
- Mendel Centre of Plant Genomics and Proteomics, Central European Institute of Technology, Masaryk University, 625 00 Brno, Czech Republic; (P.R.); (Z.Z.)
| | - Adéla Stupková
- Department of Plant Production, Faculty of Agriculture and Technology, University of South Bohemia, 370 05 České Budějovice, Czech Republic; (J.B.); (M.J.); (A.S.)
| | - Veronika Bártová
- Department of Plant Production, Faculty of Agriculture and Technology, University of South Bohemia, 370 05 České Budějovice, Czech Republic; (J.B.); (M.J.); (A.S.)
| | - Zlatuše Krejčová
- HEMP PRODUCTION CZ, Ltd., 262 72 Chraštice, Czech Republic; (Z.K.); (V.Ř.)
| | - Jan Kyselka
- Department of Dairy, Fat and Cosmetics, University of Chemistry and Technology, 166 28 Prague, Czech Republic (V.F.)
| | - Vladimír Filip
- Department of Dairy, Fat and Cosmetics, University of Chemistry and Technology, 166 28 Prague, Czech Republic (V.F.)
| | - Václav Říha
- HEMP PRODUCTION CZ, Ltd., 262 72 Chraštice, Czech Republic; (Z.K.); (V.Ř.)
| | - František Lorenc
- Department of Food Biotechnology and Agricultural Products Quality, Faculty of Agriculture and Technology, University of South Bohemia, 370 05 České Budějovice, Czech Republic (P.S.)
| | - Jan Bedrníček
- Department of Food Biotechnology and Agricultural Products Quality, Faculty of Agriculture and Technology, University of South Bohemia, 370 05 České Budějovice, Czech Republic (P.S.)
| | - Pavel Smetana
- Department of Food Biotechnology and Agricultural Products Quality, Faculty of Agriculture and Technology, University of South Bohemia, 370 05 České Budějovice, Czech Republic (P.S.)
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Pavlovic T, Margarit E, Müller GL, Saenz E, Ruzzo AI, Drincovich MF, Borrás L, Saigo M, Wheeler MCG. Differential metabolic reprogramming in developing soybean embryos in response to nutritional conditions and abscisic acid. PLANT MOLECULAR BIOLOGY 2023; 113:89-103. [PMID: 37702897 DOI: 10.1007/s11103-023-01377-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/17/2022] [Accepted: 08/29/2023] [Indexed: 09/14/2023]
Abstract
Seed storage compound deposition is influenced by both maternal and filial tissues. Within this framework, we analyzed strategies that operate during the development and filling of soybean embryos, using in vitro culture systems combined with metabolomics and proteomics approaches. The carbon:nitrogen ratio (C:N) of the maternal supply and the hormone abscisic acid (ABA) are specific and interacting signals inducing differential metabolic reprogrammings linked to changes in the accumulation of storage macromolecules like proteins or oils. Differences in the abundance of sugars, amino acids, enzymes, transporters, transcription factors, and proteins involved in signaling were detected. Embryos adapted to the nutritional status by enhancing the metabolism of both carbon and nitrogen under lower C:N ratio condition or only carbon under higher C:N ratio condition. ABA turned off multiple pathways especially in high availability of amino acids, prioritizing the storage compounds biosynthesis. Common responses induced by ABA involved increased sucrose uptake (to increase the sink force) and oleosin (oil body structural component) accumulation. In turn, ABA differentially promoted protein degradation under lower nitrogen supply in order to sustain the metabolic demands. Further, the operation of a citrate shuttle was suggested by transcript quantification and enzymatic activity measurements. The results obtained are useful to help define biotechnological tools and technological approaches to improve oil and protein yields, with direct impact on human and animal nutrition as well as in green chemistry.
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Affiliation(s)
- Tatiana Pavlovic
- Centro de Estudios Fotosintéticos y Bioquímicos (CEFOBI-CONICET), Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario, Suipacha 570, S2000LRJ, Rosario, Santa Fe, Argentina
| | - Ezequiel Margarit
- Centro de Estudios Fotosintéticos y Bioquímicos (CEFOBI-CONICET), Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario, Suipacha 570, S2000LRJ, Rosario, Santa Fe, Argentina
| | - Gabriela Leticia Müller
- Centro de Estudios Fotosintéticos y Bioquímicos (CEFOBI-CONICET), Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario, Suipacha 570, S2000LRJ, Rosario, Santa Fe, Argentina
| | - Ezequiel Saenz
- Instituto de Investigaciones en Ciencias Agrarias de Rosario (IICAR-CONICET), Facultad de Ciencias Agrarias, Universidad Nacional de Rosario, Campo Experimental Villarino CC14, S2125ZAA, Zavalla, Santa Fe, Argentina
| | - Andrés Iván Ruzzo
- Centro de Estudios Fotosintéticos y Bioquímicos (CEFOBI-CONICET), Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario, Suipacha 570, S2000LRJ, Rosario, Santa Fe, Argentina
| | - María Fabiana Drincovich
- Centro de Estudios Fotosintéticos y Bioquímicos (CEFOBI-CONICET), Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario, Suipacha 570, S2000LRJ, Rosario, Santa Fe, Argentina
| | - Lucas Borrás
- Instituto de Investigaciones en Ciencias Agrarias de Rosario (IICAR-CONICET), Facultad de Ciencias Agrarias, Universidad Nacional de Rosario, Campo Experimental Villarino CC14, S2125ZAA, Zavalla, Santa Fe, Argentina
| | - Mariana Saigo
- Centro de Estudios Fotosintéticos y Bioquímicos (CEFOBI-CONICET), Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario, Suipacha 570, S2000LRJ, Rosario, Santa Fe, Argentina.
| | - Mariel Claudia Gerrard Wheeler
- Centro de Estudios Fotosintéticos y Bioquímicos (CEFOBI-CONICET), Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario, Suipacha 570, S2000LRJ, Rosario, Santa Fe, Argentina.
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Girija A, Hacham Y, Dvir S, Panda S, Lieberman-Lazarovich M, Amir R. Cystathionine γ-synthase expression in seeds alters metabolic and DNA methylation profiles in Arabidopsis. PLANT PHYSIOLOGY 2023; 193:595-610. [PMID: 37300538 DOI: 10.1093/plphys/kiad330] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/28/2023] [Revised: 05/04/2023] [Accepted: 05/04/2023] [Indexed: 06/12/2023]
Abstract
Arabidopsis (Arabidopsis thaliana) seeds expressing the feedback-insensitive form of cystathionine γ-synthase (AtD-CGS), the key gene of methionine (Met) synthesis, under the control of a seed-specific phaseolin promoter (SSE plants) show a significant increase in Met content. This elevation is accompanied by increased levels of other amino acids (AAs), sugars, total protein, and starch, which are important from a nutritional aspect. Here, we investigated the mechanism behind this phenomenon. Gas chromatography-mass spectrometry (GC-MS) analysis of SSE leaves, siliques, and seeds collected at 3 different developmental stages showed high levels of Met, AAs, and sugars compared to the control plants. A feeding experiment with isotope-labeled AAs showed an increased flux of AAs from nonseed tissues toward the developing seeds of SSE. Transcriptome analysis of leaves and seeds displayed changes in the status of methylation-related genes in SSE plants that were further validated by methylation-sensitive enzymes and colorimetric assay. These results suggest that SSE leaves have higher DNA methylation rates than control plants. This occurrence apparently led to accelerated senescence, together with enhanced monomer synthesis, which further resulted in increased transport of monomers from the leaves toward the seeds. The developing seeds of SSE plants, however, show reduced Met levels and methylation rates. The results provide insights into the role of Met in DNA methylation and gene expression and how Met affects the metabolic profile of the plant.
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Affiliation(s)
- Aiswarya Girija
- MIGAL-Galilee Research Institute, Plant Metabolism Lab, Kiryat Shmona 11016, Israel
| | - Yael Hacham
- MIGAL-Galilee Research Institute, Plant Metabolism Lab, Kiryat Shmona 11016, Israel
- Department of Biotechnology, Tel Hai College, Upper Galilee 1220800, Israel
| | - Shachar Dvir
- MIGAL-Galilee Research Institute, Plant Metabolism Lab, Kiryat Shmona 11016, Israel
- Department of Biotechnology, Tel Hai College, Upper Galilee 1220800, Israel
| | - Sayantan Panda
- Department of Plant and Environmental Sciences, Weizmann Institute of Science, Rehovot 7610001, Israel
| | - Michal Lieberman-Lazarovich
- Institute of Plant Sciences, Department of Vegetables and Field Crops, Agricultural Research Organization, Volcani Center, Rishon LeZion 7505101, Israel
| | - Rachel Amir
- MIGAL-Galilee Research Institute, Plant Metabolism Lab, Kiryat Shmona 11016, Israel
- Department of Biotechnology, Tel Hai College, Upper Galilee 1220800, Israel
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8
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Peng C, Wu Y, Cai H, Hu Y, Huang W, Shen Y, Yang H. Methodological and physiological study of seed dormancy release in Tilia henryana. JOURNAL OF PLANT PHYSIOLOGY 2023; 287:154046. [PMID: 37390779 DOI: 10.1016/j.jplph.2023.154046] [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: 05/21/2023] [Revised: 06/20/2023] [Accepted: 06/20/2023] [Indexed: 07/02/2023]
Abstract
Tilia henryana is a rare tree of the Tilia family, found exclusively in China. Its seeds have severe dormancy features that limit its normal conditions of reproduction and renewal. Its seeds have severe dormant characteristics that limit its normal conditions of reproduction and renewal. The Dormancy in T. henryana seeds is a comprehensive dormancy (PY + PD) caused by mechanical and permeability barriers of seed coat and the presence of germination inhibitor in endosperm. L9 (34) orthogonal test was used to determine the best procedure for releasing the dormancy of T. henryana seeds, that is, first treating the seeds with H2SO4 for 15 min, followed by the application of 1 g L-1 GA3, stratification at 5 °C for 45 days, and finally germination at 20 °C, which can achieve a 98% seed germination rate. Large amounts of fat are consumed throughout the dormancy release process. As quantities of protein and starch marginally increase, soluble sugars are continuously decreased. Acid phosphatase and amylase activities increased rapidly, and the combined enzyme activities of G-6-PDH and 6-PGDH related to the PPP were also significantly increased. The levels of GA and ZR continued to increase, while the levels of ABA and IAA gradually decreased, among which GA and ABA changed most rapidly. The total amino acids content continued to decrease. Asp, Cys, Leu, Phe, His, Lys and Arg decreased with dormancy release, while Ser, Glu, Ala, Ile, Pro and Gaba showed an upward trend. The physical dormancy of T. henryana seeds is broken with H2SO4 in order to make the seed coat more permeable, which is a prerequisite for germination. As a result, the seeds can absorb water and engage in physiological metabolic activities, particularly the hydrolysis and metabolism of fat, which supply a significant amount of energy for dormancy release. In addition, rapid variations in the levels of different endogenous hormones and free amino acids, induced by cold stratification and GA3 application, are another important factor promoting the quick physiological activation of seeds and breaking the endosperm barrier.
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Affiliation(s)
- ChenYin Peng
- College of Forestry, Nanjing Forestry University, 159 Longpan Road, Xuanwu District, Nanjing, Jiangsu, 210037, PR China; Co-innovation Center for Sustainable Forestry in Southern China, Southern Tree Inspection Center National Forestry Administration, 159 Longpan Road, Xuanwu District, Nanjing, Jiangsu, 210037, PR China
| | - Yu Wu
- College of Forestry, Nanjing Forestry University, 159 Longpan Road, Xuanwu District, Nanjing, Jiangsu, 210037, PR China; Co-innovation Center for Sustainable Forestry in Southern China, Southern Tree Inspection Center National Forestry Administration, 159 Longpan Road, Xuanwu District, Nanjing, Jiangsu, 210037, PR China
| | - Hao Cai
- College of Forestry, Nanjing Forestry University, 159 Longpan Road, Xuanwu District, Nanjing, Jiangsu, 210037, PR China
| | - YaMei Hu
- College of Forestry, Nanjing Forestry University, 159 Longpan Road, Xuanwu District, Nanjing, Jiangsu, 210037, PR China
| | - WenHui Huang
- College of Forestry, Nanjing Forestry University, 159 Longpan Road, Xuanwu District, Nanjing, Jiangsu, 210037, PR China
| | - YongBao Shen
- College of Forestry, Nanjing Forestry University, 159 Longpan Road, Xuanwu District, Nanjing, Jiangsu, 210037, PR China; Co-innovation Center for Sustainable Forestry in Southern China, Southern Tree Inspection Center National Forestry Administration, 159 Longpan Road, Xuanwu District, Nanjing, Jiangsu, 210037, PR China.
| | - Hui Yang
- Myddelton College, Denbigh, LL16 3EN, United Kingdom
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Garrido A, Conde A, Serôdio J, De Vos RCH, Cunha A. Fruit Photosynthesis: More to Know about Where, How and Why. PLANTS (BASEL, SWITZERLAND) 2023; 12:2393. [PMID: 37446953 DOI: 10.3390/plants12132393] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Revised: 06/13/2023] [Accepted: 06/15/2023] [Indexed: 07/15/2023]
Abstract
Not only leaves but also other plant organs and structures typically considered as carbon sinks, including stems, roots, flowers, fruits and seeds, may exhibit photosynthetic activity. There is still a lack of a coherent and systematized body of knowledge and consensus on the role(s) of photosynthesis in these "sink" organs. With regard to fruits, their actual photosynthetic activity is influenced by a range of properties, including fruit anatomy, histology, physiology, development and the surrounding microclimate. At early stages of development fruits generally contain high levels of chlorophylls, a high density of functional stomata and thin cuticles. While some plant species retain functional chloroplasts in their fruits upon subsequent development or ripening, most species undergo a disintegration of the fruit chloroplast grana and reduction in stomata functionality, thus limiting gas exchange. In addition, the increase in fruit volume hinders light penetration and access to CO2, also reducing photosynthetic activity. This review aimed to compile information on aspects related to fruit photosynthesis, from fruit characteristics to ecological drivers, and to address the following challenging biological questions: why does a fruit show photosynthetic activity and what could be its functions? Overall, there is a body of evidence to support the hypothesis that photosynthesis in fruits is key to locally providing: ATP and NADPH, which are both fundamental for several demanding biosynthetic pathways (e.g., synthesis of fatty acids); O2, to prevent hypoxia in its inner tissues including seeds; and carbon skeletons, which can fuel the biosynthesis of primary and secondary metabolites important for the growth of fruits and for spreading, survival and germination of their seed (e.g., sugars, flavonoids, tannins, lipids). At the same time, both primary and secondary metabolites present in fruits and seeds are key to human life, for instance as sources for nutrition, bioactives, oils and other economically important compounds or components. Understanding the functions of photosynthesis in fruits is pivotal to crop management, providing a rationale for manipulating microenvironmental conditions and the expression of key photosynthetic genes, which may help growers or breeders to optimize development, composition, yield or other economically important fruit quality aspects.
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Affiliation(s)
- Andreia Garrido
- Centre of Molecular and Environmental Biology (CBMA), Department of Biology, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal
| | - Artur Conde
- Centre of Molecular and Environmental Biology (CBMA), Department of Biology, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal
| | - João Serôdio
- Centre for Environmental and Marine Studies (CESAM), Department of Biology, University of Aveiro, Campus de Santiago, 3810-193 Aveiro, Portugal
| | - Ric C H De Vos
- Business Unit Bioscience, Wageningen Plant Research, Wageningen University and Research Centre (Wageningen-UR), P.O. Box 16, 6700 AA Wageningen, The Netherlands
| | - Ana Cunha
- Centre of Molecular and Environmental Biology (CBMA), Department of Biology, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal
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Lu K, Guo Z, Di S, Lu Y, Muhammad IAR, Rong C, Ding Y, Li W, Ding C. OsMFT1 Inhibits Seed Germination by Modulating Abscisic Acid Signaling and Gibberellin Biosynthesis under Salt Stress in Rice. PLANT & CELL PHYSIOLOGY 2023; 64:674-685. [PMID: 37022148 DOI: 10.1093/pcp/pcad029] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/16/2022] [Revised: 03/20/2023] [Accepted: 04/05/2023] [Indexed: 06/16/2023]
Abstract
Seed dormancy and germination are regulated by endogenous gene expression as well as hormonal and environmental conditions, such as salinity, which greatly inhibits seed germination. MOTHER OF FT AND TFL1 (MFT), which encodes a phosphatidylethanolamine-binding protein, is a key regulator of seed germination in Arabidopsis thaliana. There are two orthologous genes of AtMFT in rice (Oryza sativa), namely, OsMFT1 and OsMFT2. However, the functions of these two genes in regulating rice seed germination under salt stress remain unknown. In this study, we found that seeds of loss-of-function osmft1 mutants germinated faster than wild-type (WT) seeds under salt stress, but this was not the case for loss-of-function osmft2 mutants. Overexpression of OsMFT1 (OsMFT1OE) or OsMFT2 increased the sensitivity to salt stress during seed germination. Transcriptome comparisons of osmft1 vs WT in the absence and presence of salt stress yielded several differentially expressed genes, which were associated with salt stress, plant hormone metabolism and signaling pathways, such as B-BOX ZINC FINGER 6, O. sativa bZIP PROTEIN 8 and GIBBERELLIN (GA) 20-oxidase 1. In addition, the sensitivity of OsMFT1OE seeds to GA and osmft1 seeds to abscisic acid (ABA) during seed germination increased under salt stress. Overall, our results indicate that ABA and GA metabolism and their signaling pathways are regulated by OsMFT1, modulating seed germination in rice under salt stress.
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Affiliation(s)
- Kunxun Lu
- College of Agriculture, Nanjing Agricultural University, No.1 Weigang, Nanjing 210095, China
| | - Ziyu Guo
- College of Agriculture, Nanjing Agricultural University, No.1 Weigang, Nanjing 210095, China
| | - Shiyu Di
- College of Agriculture, Nanjing Agricultural University, No.1 Weigang, Nanjing 210095, China
| | - Yuyang Lu
- College of Agriculture, Nanjing Agricultural University, No.1 Weigang, Nanjing 210095, China
| | | | - Chenyu Rong
- College of Agriculture, Nanjing Agricultural University, No.1 Weigang, Nanjing 210095, China
| | - Yanfeng Ding
- College of Agriculture, Nanjing Agricultural University, No.1 Weigang, Nanjing 210095, China
- Key Laboratory of Crop Physiology Ecology and Production Management, Ministry of Agriculture, No.1 Weigang, Nanjing 210095, China
- Collaborative Innovation Center for Modern Crop Production co-sponsored by Province and Ministry, Nanjing Agricultural University, No.1 Weigang, Nanjing 210095, China
| | - Weiqiang Li
- Jilin Da'an Agro-ecosystem National Observation Research Station, Changchun Jingyuetan Remote Sensing Experiment Station, Key Laboratory of Mollisols Agroecology, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, No.4888 Shengbei Street, Changchun 130102, China
| | - Chengqiang Ding
- College of Agriculture, Nanjing Agricultural University, No.1 Weigang, Nanjing 210095, China
- Key Laboratory of Crop Physiology Ecology and Production Management, Ministry of Agriculture, No.1 Weigang, Nanjing 210095, China
- Collaborative Innovation Center for Modern Crop Production co-sponsored by Province and Ministry, Nanjing Agricultural University, No.1 Weigang, Nanjing 210095, China
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11
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Samarah NH, Al-Quraan NA, Al-Wraikat BS. Ultrasonic treatment to enhance seed germination and vigour of wheat ( Triticum durum) in association with γ-aminobutyric acid (GABA) shunt pathway. FUNCTIONAL PLANT BIOLOGY : FPB 2023; 50:277-293. [PMID: 36634915 DOI: 10.1071/fp22211] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/2022] [Accepted: 12/27/2022] [Indexed: 06/17/2023]
Abstract
Treatments of wheat (Triticum durum L.) seeds with sonication or hydropriming may enhance seed germination and vigour in association with γ-aminobutyric acid (GABA). Therefore, the objective of this study is to examine the effect of sonication and hydropriming treatments on seed germination of wheat through the characterisation of seed germination performance, GABA shunt metabolite level (GABA, glutamate, and alanine), and the level of glutamate decarboxylase (GAD) mRNA transcription. Wheat seeds were exposed to three treatments for 0, 5, 10, 15, and 20min: (1) sonication with water; (2) sonication without water; and (3) hydropriming without sonication. Treated seeds were evaluated for germination percentage, mean time to germinate, germination rate index in the warm germination test, and seedling emergence and shoot length in the cold test. GABA shunt metabolites level (GABA, glutamate, and alanine), and the level of GAD mRNA transcription were measured for the seeds after treatments and for seedlings during germination and cold tests. Seeds treated with sonication or hydropriming treatments had a higher germination rate index (faster germination) in the standard germination test, and higher seedling emergence and shoot length in the cold test. Seeds treated with sonication or hydropriming treatments showed an enhancement in GABA shunt and their metabolites (alanine and glutamate), and GAD mRNA transcription level compared to untreated-control seeds. In conclusion, the sonication or hydropriming treatments significantly improved the germination performance of wheat and enhanced GABA metabolism to maintain the C:N metabolic balance, especially under cold stress.
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Affiliation(s)
- Nezar H Samarah
- Department of Plant Production, Faculty of Agriculture, Jordan University of Science and Technology, P.O. Box 3030, Irbid, 22110, Jordan
| | - Nisreen A Al-Quraan
- Department of Biotechnology and Genetic Engineering, Faculty of Science and Arts, Jordan University of Science and Technology, Irbid 22110, Jordan
| | - Batool S Al-Wraikat
- Department of Plant Production, Faculty of Agriculture, Jordan University of Science and Technology, P.O. Box 3030, Irbid, 22110, Jordan
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12
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Garrido A, Conde A, De Vos RCH, Cunha A. The influence of light microclimate on the lipid profile and associated transcripts of photosynthetically active grape berry seeds. FRONTIERS IN PLANT SCIENCE 2023; 13:1022379. [PMID: 36684778 PMCID: PMC9846335 DOI: 10.3389/fpls.2022.1022379] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/18/2022] [Accepted: 11/30/2022] [Indexed: 06/17/2023]
Abstract
Lipids and oils determine the quality and industrial value of grape seeds. Studies with legume seeds demonstrated the influence of light on lipid metabolism and its association with seed photosynthesis. Grape berry seeds are photosynthetically active till mature stage, but mostly during the green stage and veraison. The objective of this work was to compare the lipid profiles of seeds from white grape berries (cv. Alvarinho) growing at two contrasting light microclimates in the canopy (low and high light, LL and HL respectively), previously reported to have distinct photosynthetic competences. Berries were collected at three developmental stages (green, veraison and mature) and from both microclimates, and the seeds were analyzed for their lipid profiles in an untargeted manner using liquid chromatography coupled to high resolution mass spectrometry (LCMS). The seed lipid profiles differed greatly among berry developmental stages, and to a lesser extend between microclimates. The LL microclimate coincided with a higher relative levels of fatty acids specifically at mature stage, while the HL microclimate led to an up-regulation of ceramides at green stage and of triacylglycerols and glycerophospholipids at mature stage. The seed transcript levels of four key genes (VvACCase1, VvΔ9FAD, VvFAD6 and VvLOXO) involved in fatty acid metabolism were analyzed using real-time qPCR. The lipoxygenase gene (VvLOXO) was down- and up-regulated by HL, as compared to LL, in seeds at green and veraison stages, respectively. These results suggest that seed photosynthesis may play distinct roles during seed growth and development, possibly by fueling different lipid pathways: at green stage mainly towards the accumulation of membrane-bound lipid species that are essential for cell growth and maintenance of the photosynthetic machinery itself; and at veraison and mature stages mainly towards storage lipids that contribute to the final quality of the grape seeds.
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Affiliation(s)
- Andreia Garrido
- Centre of Molecular and Environmental Biology (CBMA), Department of Biology, University of Minho, Braga, Portugal
| | - Artur Conde
- Centre of Molecular and Environmental Biology (CBMA), Department of Biology, University of Minho, Braga, Portugal
| | - Ric C. H. De Vos
- Business Unit Bioscience, Wageningen Plant Research, Wageningen University and Research (Wageningen-UR), Wageningen, Netherlands
| | - Ana Cunha
- Centre of Molecular and Environmental Biology (CBMA), Department of Biology, University of Minho, Braga, Portugal
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13
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Salvi P, Varshney V, Majee M. Raffinose family oligosaccharides (RFOs): role in seed vigor and longevity. Biosci Rep 2022; 42:BSR20220198. [PMID: 36149314 PMCID: PMC9547172 DOI: 10.1042/bsr20220198] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2022] [Revised: 09/22/2022] [Accepted: 09/23/2022] [Indexed: 11/17/2022] Open
Abstract
Seed vigor and longevity are important agronomic attributes, as they are essentially associated with crop yield and thus the global economy. Seed longevity is a measure of seed viability and the most essential property in gene bank management since it affects regeneration of seed recycling. Reduced seed life or storability is a serious issue in seed storage since germplasm conservation and agricultural enhancement initiatives rely on it. The irreversible and ongoing process of seed deterioration comprises a complex gene regulatory network and altered metabolism that results in membrane damage, DNA integrity loss, mitochondrial dysregulation, protein damage, and disrupted antioxidative machinery. Carbohydrates and/or sugars, primarily raffinose family oligosaccharides (RFOs), have emerged as feasible components for boosting or increasing seed vigor and longevity in recent years. RFOs are known to perform diverse functions in plants, including abiotic and biotic stress tolerance, besides being involved in regulating seed germination, desiccation tolerance, vigor, and longevity. We emphasized and analyzed the potential impact of RFOs on seed vigor and longevity in this review. Here, we comprehensively reviewed the molecular mechanisms involved in seed longevity, RFO metabolism, and how RFO content is critical and linked with seed vigor and longevity. Further molecular basis, biotechnological approaches, and CRISPR/Cas applications have been discussed briefly for the improvement of seed attributes and ultimately crop production. Likewise, we suggest advancements, challenges, and future possibilities in this area.
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Affiliation(s)
- Prafull Salvi
- National Agri-Food Biotechnology Institute, Punjab 140308, India
| | - Vishal Varshney
- Govt. Shaheed Gend Singh College, Charama, Chhattisgarh 494337, India
| | - Manoj Majee
- National Institute of Plant Genome Research (NIPGR), Aruna Asaf Ali Marg, New Delhi 110067, India
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14
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Niñoles R, Planes D, Arjona P, Ruiz-Pastor C, Chazarra R, Renard J, Bueso E, Forment J, Serrano R, Kranner I, Roach T, Gadea J. Comparative analysis of wild-type accessions reveals novel determinants of Arabidopsis seed longevity. PLANT, CELL & ENVIRONMENT 2022; 45:2708-2728. [PMID: 35672914 DOI: 10.1111/pce.14374] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/07/2022] [Revised: 04/27/2022] [Accepted: 06/01/2022] [Indexed: 06/15/2023]
Abstract
Understanding the genetic factors involved in seed longevity is of paramount importance in agricultural and ecological contexts. The polygenic nature of this trait suggests that many of them remain undiscovered. Here, we exploited the contrasting seed longevity found amongst Arabidopsis thaliana accessions to further understand this phenomenon. Concentrations of glutathione were higher in longer-lived than shorter-lived accessions, supporting that redox poise plays a prominent role in seed longevity. However, high seed permeability, normally associated with shorter longevity, is also present in long-lived accessions. Dry seed transcriptome analysis indicated that the contribution to longevity of stored messenger RNA (mRNAs) is complex, including mainly accession-specific mechanisms. The detrimental effect on longevity caused by other factors may be counterbalanced by higher levels of specific mRNAs stored in dry seeds, for instance those of heat-shock proteins. Indeed, loss-of-function mutant analysis demonstrated that heat-shock factors HSF1A and 1B contributed to longevity. Furthermore, mutants of the stress-granule zinc-finger protein TZF9 or the spliceosome subunits MOS4 or MAC3A/MAC3B, extended seed longevity, positioning RNA as a novel player in the regulation of seed viability. mRNAs of proteins with putative relevance to longevity were also abundant in shorter-lived accessions, reinforcing the idea that resistance to ageing is determined by multiple factors.
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Affiliation(s)
- Regina Niñoles
- Department of Stress, Instituto de Biología Molecular y Celular de Plantas (IBMCP), Ciudad Politécnica de la Innovación (CPI), Universitat Politècnica de València (UPV)-Consejo Superior de Investigaciones Científicas (CSIC), Valencia, Spain
| | - Dolores Planes
- Department of Stress, Instituto de Biología Molecular y Celular de Plantas (IBMCP), Ciudad Politécnica de la Innovación (CPI), Universitat Politècnica de València (UPV)-Consejo Superior de Investigaciones Científicas (CSIC), Valencia, Spain
| | - Paloma Arjona
- Department of Stress, Instituto de Biología Molecular y Celular de Plantas (IBMCP), Ciudad Politécnica de la Innovación (CPI), Universitat Politècnica de València (UPV)-Consejo Superior de Investigaciones Científicas (CSIC), Valencia, Spain
| | - Carmen Ruiz-Pastor
- Department of Stress, Instituto de Biología Molecular y Celular de Plantas (IBMCP), Ciudad Politécnica de la Innovación (CPI), Universitat Politècnica de València (UPV)-Consejo Superior de Investigaciones Científicas (CSIC), Valencia, Spain
| | - Rubén Chazarra
- Department of Stress, Instituto de Biología Molecular y Celular de Plantas (IBMCP), Ciudad Politécnica de la Innovación (CPI), Universitat Politècnica de València (UPV)-Consejo Superior de Investigaciones Científicas (CSIC), Valencia, Spain
| | - Joan Renard
- Department of Stress, Instituto de Biología Molecular y Celular de Plantas (IBMCP), Ciudad Politécnica de la Innovación (CPI), Universitat Politècnica de València (UPV)-Consejo Superior de Investigaciones Científicas (CSIC), Valencia, Spain
| | - Eduardo Bueso
- Department of Stress, Instituto de Biología Molecular y Celular de Plantas (IBMCP), Ciudad Politécnica de la Innovación (CPI), Universitat Politècnica de València (UPV)-Consejo Superior de Investigaciones Científicas (CSIC), Valencia, Spain
| | - Javier Forment
- Department of Stress, Instituto de Biología Molecular y Celular de Plantas (IBMCP), Ciudad Politécnica de la Innovación (CPI), Universitat Politècnica de València (UPV)-Consejo Superior de Investigaciones Científicas (CSIC), Valencia, Spain
| | - Ramón Serrano
- Department of Stress, Instituto de Biología Molecular y Celular de Plantas (IBMCP), Ciudad Politécnica de la Innovación (CPI), Universitat Politècnica de València (UPV)-Consejo Superior de Investigaciones Científicas (CSIC), Valencia, Spain
| | - Ilse Kranner
- Department of Botany and Center for Molecular Biosciences Innsbruck (CMBI), University of Innsbruck, Innsbruck, Austria
| | - Thomas Roach
- Department of Botany and Center for Molecular Biosciences Innsbruck (CMBI), University of Innsbruck, Innsbruck, Austria
| | - José Gadea
- Department of Stress, Instituto de Biología Molecular y Celular de Plantas (IBMCP), Ciudad Politécnica de la Innovación (CPI), Universitat Politècnica de València (UPV)-Consejo Superior de Investigaciones Científicas (CSIC), Valencia, Spain
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15
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Gerna D, Clara D, Allwardt D, Mitter B, Roach T. Tailored Media Are Key to Unlocking the Diversity of Endophytic Bacteria in Distinct Compartments of Germinating Seeds. Microbiol Spectr 2022; 10:e0017222. [PMID: 35867396 PMCID: PMC9431621 DOI: 10.1128/spectrum.00172-22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2022] [Accepted: 07/01/2022] [Indexed: 11/24/2022] Open
Abstract
Seeds offer an internal microbial niche, termed the endosphere, colonized by communities of endophytic bacteria. To elucidate the functions of seed endophytes during germination and early plant growth, studies with culturable isolates are essential. Conventional growth media favor few fast-growing taxa, while micro organisms with restricted nutrient requirements are usually outcompeted prior to isolation. Consequently, current knowledge of the interaction between seeds and their endophytes remains limited to only few bacterial taxa, despite a "black box" of unculturable isolates colonizing the endosphere. Here, we designed various solid media to mimic the endosphere of germinating soybean (Glycine max L.) seeds and assessed their effect on the diversity of culturable endophytic bacteria. The embryonic axis (i.e., the future plant) possessed higher richness and harbored more unique genera (i.e., Brevundimonas, Methylobacterium, Microbacterium, Pseudoclavibacter, and Rathayibacter) than cotyledons (i.e., seed storage organs). Overall, media containing germinating and ground seeds enabled culturing and isolation of the broadest diversity of endophytic bacteria, viewed through the molecular identification of 246 isolates. The use of multiple tailored media helped uncover trophic adaptation of the core taxa. Furthermore, comparison of seeds from four lots of distinct cultivars and origin revealed few overlapping taxa, indicating that the parental environment, including soil and fertilization regime, influenced seed endophytic diversity. Extended diversity of native seed endophytic bacteria revealed the functional relevance of unique Arthrobacter, Bacillus, and Curtobacterium strains to seed germination under salt stress, exemplifying the importance of enhanced culturing approaches to elucidate the role of microbiota in seed germination. IMPORTANCE Plant growth-promoting endophytic isolates that appear to advance seed germination are often obtained from plant niches other than the seed endosphere. Isolating pure cultures of native endophytes from seeds during germination is crucial to investigate their function during early plant growth. Here, the diversity of endophytic bacteria isolated from seeds during soybean germination was enhanced by combining media tailored to the nutritional composition of the seed endosphere, including pregerminated seeds themselves. Our results show that isolation from distinct soybean seed compartments affected such diversity, with the embryonic axis harboring more unique taxa while displaying higher endophytic richness. Furthermore, using pools of seeds from separate lots, each corresponding to a certain cultivar and field site, supported isolation of further unique strains that often unveiled substantial effects on germination performance. Such findings are relevant to assist studies on the interactions between seeds and their native endophytic bacteria.
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Affiliation(s)
- Davide Gerna
- Department of Botany and Center for Molecular Biosciences Innsbruck, University of Innsbruck, Innsbruck, Austria
| | - David Clara
- Department of Botany and Center for Molecular Biosciences Innsbruck, University of Innsbruck, Innsbruck, Austria
| | - Dorothee Allwardt
- Bioresources Unit, Austrian Institute of Technology GmbH, Tulln, Austria
| | - Birgit Mitter
- Bioresources Unit, Austrian Institute of Technology GmbH, Tulln, Austria
| | - Thomas Roach
- Department of Botany and Center for Molecular Biosciences Innsbruck, University of Innsbruck, Innsbruck, Austria
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16
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Zhu F, Sun H, Wang J, Zheng X, Wang T, Diao Y, Hu Z. Differential expression involved in starch synthesis pathway genes reveal various starch characteristics of seed and rhizome in lotus (
Nelumbo Nucifera
). J Food Sci 2022; 87:4250-4263. [DOI: 10.1111/1750-3841.16283] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Revised: 07/05/2022] [Accepted: 07/19/2022] [Indexed: 11/30/2022]
Affiliation(s)
- Fenglin Zhu
- Key Laboratory of Industrial Dust Prevention and Control & Occupational Health and Safety Ministry of Education Anhui University of Science and Technology Huainan China
- Hubei Lotus Engineering Center, College of Life Sciences Wuhan University Wuhan China
| | - Han Sun
- Hubei Lotus Engineering Center, College of Life Sciences Wuhan University Wuhan China
| | - Jia Wang
- Key Laboratory of Industrial Dust Prevention and Control & Occupational Health and Safety Ministry of Education Anhui University of Science and Technology Huainan China
- Hubei Lotus Engineering Center, College of Life Sciences Wuhan University Wuhan China
| | - Xingwen Zheng
- Hubei Lotus Engineering Center, College of Life Sciences Wuhan University Wuhan China
- Guangchang White Lotus Research Institute of Jiangxi Province Guangchang China
| | - Tao Wang
- Hubei Lotus Engineering Center, College of Life Sciences Wuhan University Wuhan China
| | - Ying Diao
- School of life science and technology Wuhan Polytechnic University Wuhan China
| | - Zhongli Hu
- Hubei Lotus Engineering Center, College of Life Sciences Wuhan University Wuhan China
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17
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Bergmann GE, Leveau JHJ. A metacommunity ecology approach to understanding microbial community assembly in developing plant seeds. Front Microbiol 2022; 13:877519. [PMID: 35935241 PMCID: PMC9355165 DOI: 10.3389/fmicb.2022.877519] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2022] [Accepted: 07/05/2022] [Indexed: 11/13/2022] Open
Abstract
Microorganisms have the potential to affect plant seed germination and seedling fitness, ultimately impacting plant health and community dynamics. Because seed-associated microbiota are highly variable across individual plants, plant species, and environments, it is challenging to identify the dominant processes that underlie the assembly, composition, and influence of these communities. We propose here that metacommunity ecology provides a conceptually useful framework for studying the microbiota of developing seeds, by the application of metacommunity principles of filtering, species interactions, and dispersal at multiple scales. Many studies in seed microbial ecology already describe individual assembly processes in a pattern-based manner, such as correlating seed microbiome composition with genotype or tracking diversity metrics across treatments in dispersal limitation experiments. But we see a lot of opportunities to examine understudied aspects of seed microbiology, including trait-based research on mechanisms of filtering and dispersal at the micro-scale, the use of pollination exclusion experiments in macro-scale seed studies, and an in-depth evaluation of how these processes interact via priority effect experiments and joint species distribution modeling.
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18
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de Almeida Garcia Rodrigues G, da Silva D, Ribeiro MI, Loaiza-Loaiza OA, Alcantara S, Komatsu RA, Barbedo CJ, Steiner N. What affects the desiccation tolerance threshold of Brazilian Eugenia (Myrtaceae) seeds? JOURNAL OF PLANT RESEARCH 2022; 135:579-591. [PMID: 35670888 DOI: 10.1007/s10265-022-01396-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/10/2021] [Accepted: 04/20/2022] [Indexed: 06/15/2023]
Abstract
Desiccation sensitive (DS) seeds are shed at high water contents (WC) and metabolically active, but WC thresholds vary broadly among species even in the same genus. Eugenia is an important ecological genus that has high occurrence in several Brazilian morphoclimatic domains. In this study, we assessed seed desiccation tolerance of five Eugenia species collected in specific meteorological conditions. We reported the species geographical ranges and verified the rainfall and temperature of species sites in the year prior to seed collection. We also assessed initial WC, seed germination and vigor and seedling growth upon desiccation. Eugenia uniflora was the widest spread among the five species, while E. astringens was the most restricted. In this specific study, widespread species showed a higher WC threshold than restricted species. In the same way, the WC of fresh seeds was not correlated to the desiccation tolerance threshold. Seed desiccation tolerance was species dependent and correlated with the environmental status of seed collection sites. Wetter and warmer conditions were correlated to the E. uniflora higher DS threshold. Low rainfall and temperature corresponded to a lower desiccation sensitivity of E. astringens seeds. Seeds of the five species lost half viability between 0.44 and 0.25 g H2O g DW- 1 and after 65-270 h of desiccation. Our results indicate that abiotic factors impact plant populations during the seed production season and can drive seed desiccation tolerance threshold and physiological behavior. These results should be taken into account in ex-situ plant conservation programs and tropical species management.
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Affiliation(s)
| | - Danielle da Silva
- Plant Physiology Lab, Federal University of Santa Catarina (UFSC), Av. César Seara, s/n, Florianópolis, Brazil
| | - Maiara Iadwizak Ribeiro
- Instituto de Pesquisas Ambientais, Nucleo de Conservação da Biodiversidade, Av. Miguel Stefano 3687, São Paulo, Brazil
| | - Oscar Alfonso Loaiza-Loaiza
- Plant Physiology Lab, Federal University of Santa Catarina (UFSC), Av. César Seara, s/n, Florianópolis, Brazil
| | - Suzana Alcantara
- Plant Systematics Lab, Federal University of Santa Catarina (UFSC), Av. César Seara, s/n, Florianópolis, Brazil
| | | | - Claudio Jose Barbedo
- Instituto de Pesquisas Ambientais, Nucleo de Conservação da Biodiversidade, Av. Miguel Stefano 3687, São Paulo, Brazil
| | - Neusa Steiner
- Plant Physiology Lab, Federal University of Santa Catarina (UFSC), Av. César Seara, s/n, Florianópolis, Brazil.
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19
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Liu X, Yang Z, Wang Y, Shen Y, Jia Q, Zhao C, Zhang M. Multiple caleosins have overlapping functions in oil accumulation and embryo development. JOURNAL OF EXPERIMENTAL BOTANY 2022; 73:3946-3962. [PMID: 35419601 DOI: 10.1093/jxb/erac153] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/22/2022] [Accepted: 04/08/2022] [Indexed: 06/14/2023]
Abstract
Caleosins are lipid droplet- and endoplasmic reticulum-associated proteins. To investigate their functions in oil accumulation, expression levels of caleosins in developing seeds of Arabidopsis thaliana were examined and four seed-expressed caleosins (CLO1, CLO2, CLO4, and CLO6) were identified. The four single mutants showed similar minor changes of fatty acid composition in seeds. Two double mutants (clo1 clo2 and clo1×clo2) demonstrated distinct changes of fatty acid composition, a 16-23% decrease of oil content, and a 10-13% decrease of seed weight. Moreover, a 40% decrease of oil content, further fatty acid changes, and misshapen membranes of smaller lipid droplets were found in seeds of quadruple CLO RNAi lines. Notably, ~40% of quadruple CLO RNAi T1 seeds failed to germinate, and deformed embryos and seedlings were also observed. Complementation experiments showed that CLO1 rescued the phenotype of clo1 clo2. Overexpression of CLO1 in seedlings and BY2 cells increased triacylglycerol content up to 73.6%. Transcriptome analysis of clo1 clo2 developing seeds showed that expression levels of some genes related to lipid, embryo development, calcium signaling, and stress responses were affected. Together, these results suggest that the major seed-expressed caleosins have overlapping functions in oil accumulation and show pleiotropic effects on embryo development.
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Affiliation(s)
- Xiangling Liu
- College of Agronomy, Northwest A&F University, Yangling, Shaanxi 712100, China
| | | | - Yun Wang
- College of Agronomy, Northwest A&F University, Yangling, Shaanxi 712100, China
| | | | - Qingli Jia
- College of Agronomy, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Cuizhu Zhao
- College of Agronomy, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Meng Zhang
- College of Agronomy, Northwest A&F University, Yangling, Shaanxi 712100, China
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20
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Skirycz A, Fernie AR. Past accomplishments and future challenges of the multi-omics characterization of leaf growth. PLANT PHYSIOLOGY 2022; 189:473-489. [PMID: 35325227 PMCID: PMC9157134 DOI: 10.1093/plphys/kiac136] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Accepted: 01/25/2022] [Indexed: 06/14/2023]
Abstract
The advent of omics technologies has revolutionized biology and advanced our understanding of all biological processes, including major developmental transitions in plants and animals. Here, we review the vast knowledge accumulated concerning leaf growth in terms of transcriptional regulation before turning our attention to the historically less well-characterized alterations at the protein and metabolite level. We will then discuss how the advent of biochemical methods coupled with metabolomics and proteomics can provide insight into the protein-protein and protein-metabolite interactome of the growing leaves. We finally highlight the substantial challenges in detection, spatial resolution, integration, and functional validation of the omics results, focusing on metabolomics as a prerequisite for a comprehensive understanding of small-molecule regulation of plant growth.
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Affiliation(s)
- Aleksandra Skirycz
- Max-Planck-Institute of Molecular Plant Physiology, Potsdam-Golm 14476, Germany
- Boyce Thompson Institute, Ithaca, New York 14853, USA
- Cornell University, Ithaca, New York 14853, USA
| | - Alisdair R Fernie
- Max-Planck-Institute of Molecular Plant Physiology, Potsdam-Golm 14476, Germany
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21
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Exploring the High Variability of Vegetative Desiccation Tolerance in Pteridophytes. PLANTS 2022; 11:plants11091222. [PMID: 35567223 PMCID: PMC9103120 DOI: 10.3390/plants11091222] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/12/2022] [Revised: 04/24/2022] [Accepted: 04/27/2022] [Indexed: 11/19/2022]
Abstract
In the context of plant evolution, pteridophytes, which is comprised of lycophytes and ferns, occupy an intermediate position between bryophytes and seed plants, sharing characteristics with both groups. Pteridophytes is a highly diverse group of plant species that occupy a wide range of habitats including ecosystems with extreme climatic conditions. There is a significant number of pteridophytes that can tolerate desiccation by temporarily arresting their metabolism in the dry state and reactivating it upon rehydration. Desiccation-tolerant pteridophytes exhibit a strategy that appears to be intermediate between the constitutive and inducible desiccation tolerance (DT) mechanisms observed in bryophytes and angiosperms, respectively. In this review, we first describe the incidence and anatomical diversity of desiccation-tolerant pteridophytes and discuss recent advances on the origin of DT in vascular plants. Then, we summarize the highly diverse adaptations and mechanisms exhibited by this group and describe how some of these plants could exhibit tolerance to multiple types of abiotic stress. Research on the evolution and regulation of DT in different lineages is crucial to understand how plants have adapted to extreme environments. Thus, in the current scenario of climate change, the knowledge of the whole landscape of DT strategies is of vital importance as a potential basis to improve plant abiotic stress tolerance.
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22
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Avezum L, Rondet E, Mestres C, Achir N, Madode Y, Gibert O, Lefevre C, Hemery Y, Verdeil JL, Rajjou L. Improving the nutritional quality of pulses via germination. FOOD REVIEWS INTERNATIONAL 2022. [DOI: 10.1080/87559129.2022.2063329] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Luiza Avezum
- QualiSud, Université de Montpellier, Avignon Université, CIRAD, Institut Agro, IRD, Université de la Réunion, Montpellier, France
- Université Paris-Saclay, INRAE, AgroParisTech, Institut Jean-Pierre Bourgin (IJPB), Versailles, France
| | - Eric Rondet
- QualiSud, Université de Montpellier, Avignon Université, CIRAD, Institut Agro, IRD, Université de la Réunion, Montpellier, France
| | - Christian Mestres
- QualiSud, Université de Montpellier, Avignon Université, CIRAD, Institut Agro, IRD, Université de la Réunion, Montpellier, France
| | - Nawel Achir
- QualiSud, Université de Montpellier, Avignon Université, CIRAD, Institut Agro, IRD, Université de la Réunion, Montpellier, France
| | - Yann Madode
- Laboratoire de Sciences des Aliments, Faculté des Sciences Agronomiques, Université d’Abomey-Calavi (LSA/FSA/UAC), Cotonou, Benin
| | - Olivier Gibert
- QualiSud, Université de Montpellier, Avignon Université, CIRAD, Institut Agro, IRD, Université de la Réunion, Montpellier, France
| | - Charlotte Lefevre
- QualiSud, Université de Montpellier, Avignon Université, CIRAD, Institut Agro, IRD, Université de la Réunion, Montpellier, France
| | - Youna Hemery
- QualiSud, Université de Montpellier, Avignon Université, CIRAD, Institut Agro, IRD, Université de la Réunion, Montpellier, France
| | - Jean-Luc Verdeil
- AGAP, Université de Montpellier, CIRAD, INRAE, Institut Agro, Montpellier, France
| | - Loïc Rajjou
- Université Paris-Saclay, INRAE, AgroParisTech, Institut Jean-Pierre Bourgin (IJPB), Versailles, France
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23
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Elango D, Rajendran K, Van der Laan L, Sebastiar S, Raigne J, Thaiparambil NA, El Haddad N, Raja B, Wang W, Ferela A, Chiteri KO, Thudi M, Varshney RK, Chopra S, Singh A, Singh AK. Raffinose Family Oligosaccharides: Friend or Foe for Human and Plant Health? FRONTIERS IN PLANT SCIENCE 2022; 13:829118. [PMID: 35251100 PMCID: PMC8891438 DOI: 10.3389/fpls.2022.829118] [Citation(s) in RCA: 37] [Impact Index Per Article: 18.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/04/2021] [Accepted: 01/26/2022] [Indexed: 05/27/2023]
Abstract
Raffinose family oligosaccharides (RFOs) are widespread across the plant kingdom, and their concentrations are related to the environment, genotype, and harvest time. RFOs are known to carry out many functions in plants and humans. In this paper, we provide a comprehensive review of RFOs, including their beneficial and anti-nutritional properties. RFOs are considered anti-nutritional factors since they cause flatulence in humans and animals. Flatulence is the single most important factor that deters consumption and utilization of legumes in human and animal diets. In plants, RFOs have been reported to impart tolerance to heat, drought, cold, salinity, and disease resistance besides regulating seed germination, vigor, and longevity. In humans, RFOs have beneficial effects in the large intestine and have shown prebiotic potential by promoting the growth of beneficial bacteria reducing pathogens and putrefactive bacteria present in the colon. In addition to their prebiotic potential, RFOs have many other biological functions in humans and animals, such as anti-allergic, anti-obesity, anti-diabetic, prevention of non-alcoholic fatty liver disease, and cryoprotection. The wide-ranging applications of RFOs make them useful in food, feed, cosmetics, health, pharmaceuticals, and plant stress tolerance; therefore, we review the composition and diversity of RFOs, describe the metabolism and genetics of RFOs, evaluate their role in plant and human health, with a primary focus in grain legumes.
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Affiliation(s)
- Dinakaran Elango
- Department of Agronomy, Iowa State University, Ames, IA, United States
| | - Karthika Rajendran
- VIT School of Agricultural Innovations and Advanced Learning, Vellore Institute of Technology, Vellore, India
| | - Liza Van der Laan
- Department of Agronomy, Iowa State University, Ames, IA, United States
| | - Sheelamary Sebastiar
- Division of Crop Improvement, ICAR-Sugarcane Breeding Institute, Coimbatore, India
| | - Joscif Raigne
- Department of Agronomy, Iowa State University, Ames, IA, United States
| | | | - Noureddine El Haddad
- International Center for Agricultural Research in the Dry Areas, Rabat, Morocco
- Faculty of Sciences, Mohammed V University of Rabat, Rabat, Morocco
| | - Bharath Raja
- School of Biosciences and Technology, Vellore Institute of Technology, Vellore, India
| | - Wanyan Wang
- Ecosystem Science and Management, Penn State University, University Park, PA, United States
| | - Antonella Ferela
- Department of Agronomy, Iowa State University, Ames, IA, United States
| | - Kevin O. Chiteri
- Department of Agronomy, Iowa State University, Ames, IA, United States
| | - Mahendar Thudi
- Department of Agricultural Biotechnology and Molecular Biology, Dr. Rajendra Prasad Central Agricultural University, Pusa, India
- Centre for Crop Health, University of Southern Queensland, Toowoomba, QLD, Australia
| | - Rajeev K. Varshney
- International Crops Research Institute for the Semi-Arid Tropics, Patancheru, India
- State Agricultural Biotechnology Centre, Crop Research Innovation Centre, Food Futures Institute, Murdoch University, Murdoch, WA, Australia
| | - Surinder Chopra
- Department of Plant Science, Penn State University, University Park, PA, United States
| | - Arti Singh
- Department of Agronomy, Iowa State University, Ames, IA, United States
| | - Asheesh K. Singh
- Department of Agronomy, Iowa State University, Ames, IA, United States
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24
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Eliášová K, Konrádová H, Dobrev PI, Motyka V, Lomenech AM, Fischerová L, Lelu-Walter MA, Vondráková Z, Teyssier C. Desiccation as a Post-maturation Treatment Helps Complete Maturation of Norway Spruce Somatic Embryos: Carbohydrates, Phytohormones and Proteomic Status. FRONTIERS IN PLANT SCIENCE 2022; 13:823617. [PMID: 35237290 PMCID: PMC8882965 DOI: 10.3389/fpls.2022.823617] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/27/2021] [Accepted: 01/04/2022] [Indexed: 06/12/2023]
Abstract
Exposure of Norway spruce (Picea abies) somatic embryos and those of many other conifers to post-maturation desiccation treatment significantly improves their germination. An integration analysis was conducted to understand the underlying processes induced during the desiccation phase at the molecular level. Carbohydrate, protein and phytohormone assays associated with histological and proteomic studies were performed for the evaluation of markers and actors in this phase. Multivariate comparison of mature somatic embryos with mature desiccated somatic embryos and/or zygotic embryos provided new insights into the processes involved during the desiccation step of somatic embryogenesis. Desiccated embryos were characterized by reduced levels of starch and soluble carbohydrates but elevated levels of raffinose family oligosaccharides. Desiccation treatment decreased the content of abscisic acid and its derivatives but increased total auxins and cytokinins. The content of phytohormones in dry zygotic embryos was lower than in somatic embryos, but their profile was mostly analogous, apart from differences in cytokinin profiles. The biological processes "Acquisition of desiccation tolerance", "Response to stimulus", "Response to stress" and "Stored energy" were activated in both the desiccated somatic embryos and zygotic embryos when compared to the proteome of mature somatic embryos before desiccation. Based on the specific biochemical changes of important constituents (abscisic acid, raffinose, stachyose, LEA proteins and cruciferins) induced by the desiccation treatment and observed similarities between somatic and zygotic P. abies embryos, we concluded that the somatic embryos approximated to a state of desiccation tolerance. This physiological change could be responsible for the reorientation of Norway spruce somatic embryos toward a stage suitable for germination.
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Affiliation(s)
- Kateřina Eliášová
- Institute of Experimental Botany of the Czech Academy of Sciences, Prague, Czechia
| | - Hana Konrádová
- Department of Experimental Plant Biology, Faculty of Science, Charles University, Prague, Czechia
| | - Petre I. Dobrev
- Institute of Experimental Botany of the Czech Academy of Sciences, Prague, Czechia
| | - Václav Motyka
- Institute of Experimental Botany of the Czech Academy of Sciences, Prague, Czechia
| | | | - Lucie Fischerová
- Institute of Experimental Botany of the Czech Academy of Sciences, Prague, Czechia
| | | | - Zuzana Vondráková
- Institute of Experimental Botany of the Czech Academy of Sciences, Prague, Czechia
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25
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The Seed and the Metabolism Regulation. BIOLOGY 2022; 11:biology11020168. [PMID: 35205035 PMCID: PMC8869448 DOI: 10.3390/biology11020168] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Revised: 01/13/2022] [Accepted: 01/18/2022] [Indexed: 12/14/2022]
Abstract
Simple Summary Seeds are the reproductive units of higher plants. They have a significant place in agriculture and plant diversity maintenance. Because they are dehydrated, they can remain viable in the environment for centuries. This review explores the dry seed as a metabolically inactive organism, but well organized to protect its components and enter intensive repair to restore metabolic activities upon imbibition for the completion of germination. Metabolism regulation is also critical for the most important seed traits, dormancy, and ageing recovery capacity. Abstract The seed represents a critical stage in the life cycle of flowering plants. It corresponds to a dry structure carrying the plant embryo in dormant or quiescent state. Orthodox seeds possess a very low water content, preventing biochemical reactions, especially respiration. If the desiccation of living organisms leads to a loss of homeostasis, structure, and metabolism, the seeds go through it successfully thanks to their structure, cellular organization, and growth regulation. Seeds set up a certain number of sophisticated molecules to protect valuable macromolecules or organelles from dehydration/rehydration cycles. Moreover, dormancy takes place in a coordinated process with environmental cues in order to ensure embryo development at the most appropriate conditions for the establishment of the new plant. Moreover, repair processes are programmed to be ready to operate to maximize germination success and seed longevity. This review focuses on the physiology of the seed as related to hydration forces, respiration, and biochemical reactions in the transition from thermodynamically undefined dry state to self-sustained living system. Such processes are of importance for basic knowledge of the regulation of metabolism of living organisms, but also for the control of germination in the context of climate change due to global warming.
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26
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Tao Y, Mohi Ud Din A, An L, Chen H, Li G, Ding Y, Liu Z. Metabolic Disturbance Induced by the Embryo Contributes to the Formation of Chalky Endosperm of a Notched-Belly Rice Mutant. FRONTIERS IN PLANT SCIENCE 2022; 12:760597. [PMID: 35069619 PMCID: PMC8767064 DOI: 10.3389/fpls.2021.760597] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/18/2021] [Accepted: 12/07/2021] [Indexed: 06/14/2023]
Abstract
Grain chalkiness is a key quality trait of the rice grain, whereas its underlying mechanism is still not thoroughly understood because of the complex genetic and environmental interactions. We identified a notched-belly (NB) mutant that has a notched-line on the belly of grains. The line dissects the endosperm into two distinct parts, the upper translucent part, and the bottom chalky part in the vicinity of the embryo. Using this mutant, our previous studies clued the negative influence of embryo on the biochemical makeup of the endosperm, suggesting the need for the in-depth study of the embryo effect on the metabolome of developing endosperm. This study continued to use the NB mutant to evolve a novel comparison method to clarify the role of embryo in the formation of a chalky endosperm. Grain samples of the wild-type (WT) and NB were harvested at 10, 20, and 30 days after fertilization (DAF), and then divided into subsamples of the embryo, the upper endosperm, and the bottom endosperm. Using non-targeted metabolomics and whole-genome RNA sequencing (RNA-seq), a nearly complete catalog of expressed metabolites and genes was generated. Results showed that the embryo impaired the storage of sucrose, amino acid, starch, and storage proteins in the bottom endosperm of NB by enhancing the expression of sugar, amino acids, and peptide transporters, and declining the expression of starch, prolamin, and glutelin synthesis-related genes. Importantly, the competitive advantage of the developing embryo in extracting the nutrients from the endosperm, transformed the bottom endosperm into an "exhaustive source" by diverting the carbon (C) and nitrogen (N) metabolism from synthetic storage to secondary pathways, resulting in impaired filling of the bottom endosperm and subsequently the formation of chalky tissue. In summary, this study reveals that embryo-induced metabolic shift in the endosperm is associated with the occurrence of grain chalkiness, which is of relevance to the development of high-quality rice by balancing the embryo-endosperm interaction.
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Affiliation(s)
- Yang Tao
- College of Agriculture, Nanjing Agricultural University, Nanjing, China
| | - Atta Mohi Ud Din
- College of Agriculture, Nanjing Agricultural University, Nanjing, China
| | - Lu An
- College of Agriculture, Nanjing Agricultural University, Nanjing, China
| | - Hao Chen
- College of Agriculture, Nanjing Agricultural University, Nanjing, China
| | - Ganghua Li
- College of Agriculture, Nanjing Agricultural University, Nanjing, China
| | - Yanfeng Ding
- College of Agriculture, Nanjing Agricultural University, Nanjing, China
| | - Zhenghui Liu
- College of Agriculture, Nanjing Agricultural University, Nanjing, China
- Collaborative Innovation Center for Modern Crop Production, Nanjing Agricultural University, Nanjing, China
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27
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da Fonseca-Pereira P, Pham PA, Cavalcanti JHF, Omena-Garcia RP, Barros JAS, Rosado-Souza L, Vallarino JG, Mutwil M, Avin-Wittenberg T, Nunes-Nesi A, Fernie AR, Araújo WL. The Arabidopsis electron-transfer flavoprotein:ubiquinone oxidoreductase is required during normal seed development and germination. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2022; 109:196-214. [PMID: 34741366 DOI: 10.1111/tpj.15566] [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: 10/25/2021] [Revised: 10/25/2021] [Accepted: 10/28/2021] [Indexed: 06/13/2023]
Abstract
The importance of the alternative donation of electrons to the ubiquinol pool via the electron-transfer flavoprotein/electron-transfer flavoprotein:ubiquinone oxidoreductase (ETF/ETFQO) complex has been demonstrated. However, the functional significance of this pathway during seed development and germination remains to be elucidated. To assess the function of this pathway, we performed a detailed metabolic and transcriptomic analysis of Arabidopsis mutants to test the molecular consequences of a dysfunctional ETF/ETFQO pathway. We demonstrate that the disruption of this pathway compromises seed germination in the absence of an external carbon source and also impacts seed size and yield. Total protein and storage protein content is reduced in dry seeds, whilst sucrose levels remain invariant. Seeds of ETFQO and related mutants were also characterized by an altered fatty acid composition. During seed development, lower levels of fatty acids and proteins accumulated in the etfqo-1 mutant as well as in mutants in the alternative electron donors isovaleryl-CoA dehydrogenase (ivdh-1) and d-2-hydroxyglutarate dehydrogenase (d2hgdh1-2). Furthermore, the content of several amino acids was increased in etfqo-1 mutants during seed development, indicating that these mutants are not using such amino acids as alternative energy source for respiration. Transcriptome analysis revealed alterations in the expression levels of several genes involved in energy and hormonal metabolism. Our findings demonstrated that the alternative pathway of respiration mediated by the ETF/ETFQO complex affects seed germination and development by directly adjusting carbon storage during seed filling. These results indicate a role for the pathway in the normal plant life cycle to complement its previously defined roles in the response to abiotic stress.
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Affiliation(s)
- Paula da Fonseca-Pereira
- Departamento de Biologia Vegetal, Universidade Federal de Viçosa, 36570-900, Viçosa, Minas Gerais, Brazil
- Max Planck Institute of Molecular Plant Physiology, D-14476, Potsdam-Golm, Germany
| | - Phuong Anh Pham
- Max Planck Institute of Molecular Plant Physiology, D-14476, Potsdam-Golm, Germany
| | - João Henrique F Cavalcanti
- Instituto de Educação, Agricultura e Ambiente, Universidade Federal do Amazonas, Humaitá, Amazonas, Brazil
| | - Rebeca P Omena-Garcia
- Departamento de Biologia Vegetal, Universidade Federal de Viçosa, 36570-900, Viçosa, Minas Gerais, Brazil
| | - Jessica A S Barros
- Departamento de Biologia Vegetal, Universidade Federal de Viçosa, 36570-900, Viçosa, Minas Gerais, Brazil
| | - Laise Rosado-Souza
- Max Planck Institute of Molecular Plant Physiology, D-14476, Potsdam-Golm, Germany
| | - José G Vallarino
- Max Planck Institute of Molecular Plant Physiology, D-14476, Potsdam-Golm, Germany
| | - Marek Mutwil
- School of Biological Sciences, Nanyang Technological University, 60 Nanyang Drive, Singapore, 637551, Singapore
| | - Tamar Avin-Wittenberg
- Department of Plant and Environmental Sciences, Alexander Silberman Institute of Life Sciences, Hebrew University of Jerusalem, Givat Ram, Jerusalem, 9190401, Israel
| | - Adriano Nunes-Nesi
- Departamento de Biologia Vegetal, Universidade Federal de Viçosa, 36570-900, Viçosa, Minas Gerais, Brazil
| | - Alisdair R Fernie
- Max Planck Institute of Molecular Plant Physiology, D-14476, Potsdam-Golm, Germany
| | - Wagner L Araújo
- Departamento de Biologia Vegetal, Universidade Federal de Viçosa, 36570-900, Viçosa, Minas Gerais, Brazil
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28
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Peng L, Huang X, Qi M, Pritchard HW, Xue H. Mechanistic insights derived from re-establishment of desiccation tolerance in germinating xerophytic seeds: Caragana korshinskii as an example. FRONTIERS IN PLANT SCIENCE 2022; 13:1029997. [PMID: 36420023 PMCID: PMC9677110 DOI: 10.3389/fpls.2022.1029997] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2022] [Accepted: 09/27/2022] [Indexed: 05/13/2023]
Abstract
Germplasm conservation strongly depends on the desiccation tolerance (DT) of seeds. Xerophytic seeds have strong desiccation resistance, which makes them excellent models to study DT. Although some experimental strategies have been applied previously, most methods are difficult to apply to xerophytic seeds. In this review, we attempted to synthesize current strategies for the study of seed DT and provide an in-depth look at Caragana korshinskii as an example. First, we analyze congenital advantages of xerophytes in the study of seed DT. Second, we summarize several strategies used to study DT and illustrate a suitable strategy for xerophytic species. Then, based on our previous studies work with C. korshinskii, a feasible technical strategy for DT re-establishment is provided and we provide illustrate some special molecular mechanisms seen in xerophytic seeds. Finally, several steps to unveil the DT mechanism of xerophytic seeds are suggested, and three scientific questions that the field should consider are listed. We hope to optimize and utilize this strategy for more xerophytic species to more systematically decipher the physiological and molecular processes of seed DT and provide more candidate genes for molecular breeding.
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Affiliation(s)
- Long Peng
- The Research Institute of Subtropical Forestry, Chinese Academy of Forestry, Hangzhou, China
| | - Xu Huang
- National Engineering Research Center of Tree breeding and Ecological remediation, College of Biological Sciences and Biotechnology, Beijing Forestry University, Beijing, China
| | - Manyao Qi
- National Engineering Research Center of Tree breeding and Ecological remediation, College of Biological Sciences and Biotechnology, Beijing Forestry University, Beijing, China
| | - Hugh W. Pritchard
- Chinese Academy of Sciences, Kunming Institute of Botany, Kunming, China
- Royal Botanic Gardens, Kew, Wakehurst, West Sussex, United Kingdom
| | - Hua Xue
- National Engineering Research Center of Tree breeding and Ecological remediation, College of Biological Sciences and Biotechnology, Beijing Forestry University, Beijing, China
- *Correspondence: Hua Xue,
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29
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Escandón M, Bigatton ED, Guerrero-Sánchez VM, Hernández-Lao T, Rey MD, Jorrín-Novo JV, Castillejo MA. Identification of Proteases and Protease Inhibitors in Seeds of the Recalcitrant Forest Tree Species Quercus ilex. FRONTIERS IN PLANT SCIENCE 2022; 13:907042. [PMID: 35832232 PMCID: PMC9271950 DOI: 10.3389/fpls.2022.907042] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Accepted: 06/06/2022] [Indexed: 05/09/2023]
Abstract
Proteases and protease inhibitors have been identified in the recalcitrant species Quercus ilex using in silico and wet methods, with focus on those present in seeds during germination. In silico analyses showed that the Q. ilex transcriptome database contained 2,240 and 97 transcripts annotated as proteases and protease inhibitors, respectively. They belonged to the different families according to MEROPS, being the serine and metallo ones the most represented. The data were compared with those previously reported for other Quercus species, including Q. suber, Q. lobata, and Q. robur. Changes in proteases and protease inhibitors alongside seed germination in cotyledon and embryo axis tissues were assessed using proteomics and in vitro and in gel activity assays. Shotgun (LC-MSMS) analysis of embryo axes and cotyledons in nonviable (NV), mature (T1) and germinated (T3) seeds allowed the identification of 177 proteases and 12 protease inhibitors, mostly represented by serine and metallo types. Total protease activity, as determined by in vitro assays using azocasein as substrate, was higher in cotyledons than in embryo axes. There were not differences in activity among cotyledon samples, while embryo axis peaked at germinated T4 stage. Gel assays revealed the presence of protease activities in at least 10 resolved bands, in the Mr range of 60-260 kDa, being some of them common to cotyledons and embryo axes in either nonviable, mature, and germinated seeds. Bands showing quantitative or qualitative changes upon germination were observed in embryo axes but not in cotyledons at Mr values of 60-140 kDa. Proteomics shotgun analysis of the 10 bands with protease activity supported the results obtained in the overall proteome analysis, with 227 proteases and 3 protease inhibitors identified mostly represented by the serine, cysteine, and metallo families. The combined use of shotgun proteomics and protease activity measurements allowed the identification of tissue-specific (e.g., cysteine protease inhibitors in embryo axes of mature acorns) and stage-specific proteins (e.g., those associated with mobilization of storage proteins accumulated in T3 stage). Those proteins showing differences between nonviable and viable seeds could be related to viability, and those variables between mature and germinated could be associated with the germination process. These differences are observed mostly in embryo axes but not in cotyledons. Among them, those implicated in mobilization of reserve proteins, such as the cathepsin H cysteine protease and Clp proteases, and also the large number of subunits of the CNS and 26S proteasome complex differentially identified in embryos of the several stages suggests that protein degradation via CNS/26S plays a major role early in germination. Conversely, aspartic proteases such as nepenthesins were exclusively identified in NV seeds, so their presence could be used as indicator of nonviability.
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Affiliation(s)
- Monica Escandón
- Agroforestry and Plant Biochemistry, Proteomics and Systems Biology, Department of Biochemistry and Molecular Biology, University of Córdoba, Córdoba, Spain
| | - Ezequiel D. Bigatton
- Agroforestry and Plant Biochemistry, Proteomics and Systems Biology, Department of Biochemistry and Molecular Biology, University of Córdoba, Córdoba, Spain
- Agricultural Microbiology, Faculty of Agricultural Science, National University of Córdoba, CONICET, Córdoba, Argentina
| | - Victor M. Guerrero-Sánchez
- Agroforestry and Plant Biochemistry, Proteomics and Systems Biology, Department of Biochemistry and Molecular Biology, University of Córdoba, Córdoba, Spain
| | - Tamara Hernández-Lao
- Agroforestry and Plant Biochemistry, Proteomics and Systems Biology, Department of Biochemistry and Molecular Biology, University of Córdoba, Córdoba, Spain
| | - Maria-Dolores Rey
- Agroforestry and Plant Biochemistry, Proteomics and Systems Biology, Department of Biochemistry and Molecular Biology, University of Córdoba, Córdoba, Spain
| | - Jesus V. Jorrín-Novo
- Agroforestry and Plant Biochemistry, Proteomics and Systems Biology, Department of Biochemistry and Molecular Biology, University of Córdoba, Córdoba, Spain
- Jesus V. Jorrín-Novo,
| | - Maria Angeles Castillejo
- Agroforestry and Plant Biochemistry, Proteomics and Systems Biology, Department of Biochemistry and Molecular Biology, University of Córdoba, Córdoba, Spain
- *Correspondence: Maria Angeles Castillejo,
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Wang S, Shen Y, Bao H. Morphological, physiological and biochemical changes in Magnolia zenii Cheng seed during development. PHYSIOLOGIA PLANTARUM 2021; 172:2129-2141. [PMID: 33937990 PMCID: PMC8362153 DOI: 10.1111/ppl.13445] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2021] [Revised: 04/16/2021] [Accepted: 04/29/2021] [Indexed: 05/05/2023]
Abstract
An understanding of the seed dynamics of endangered plant species, such as Magnolia zenii Cheng, is important for successful conservation. This study examined the morphological, physiological and biochemical changes that occur in M. zenii Cheng during seed development to determine the appropriate harvest stage. The appearance of the seeds was influenced by the physiological and biochemical changes occurring during the developmental period, during which the colour of the fruits changed from green to red, while that of the seed changed from light brown to dark brown. There was a significant decrease in the seed moisture content from 90 to 120 days after flowering (DAF); however, there was no significant change from 135 to 165 DAF. The seeds from 135 DAF onwards showed developed cotyledonary embryos. The seed viability exceeded 95% from 135 DAF onwards; however, the germination percentage was 0, hypothesising that the seeds of M. zenii Cheng might exhibit physiological dormancy under certain conditions of this experiment. There was a significant increase in the fat, soluble sugar and soluble starch content of the seeds while approaching maturity. There were significant changes in malate dehydrogenase (MDH), glucose-6-phosphate dehydrogenase (G-6-PDH), 6-phosphogluconate dehydrogenase (6-PGDH) and β-amylase activities in the seeds during the developmental period. At 135-165 DAF, the MDH activity remained stable, whereas that of 6-PGDH reached its maximum, indicating that the seeds underwent vigorous metabolism. The findings of this study provide a theoretical basis for researching seed dormancy and seed harvest time.
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Affiliation(s)
- Shan Wang
- Co‐Innovation Center for the Sustainable Forestry in Southern ChinaNanjing Forestry UniversityNanjingChina
- College of ForestryNanjing Forestry UniversityNanjingChina
- Southern Tree Seed Inspection CenterNational Forestry AdministrationNanjingChina
- Jiangsu Engineering and Technology Center for Modern HorticultureJiangsu Vocational College of Agriculture and ForestryZhenjiangChina
- Jiangsu Agricultural Expo ParkJiangsu Vocational College of Agriculture and ForestryZhenjiangChina
| | - Yongbao Shen
- Co‐Innovation Center for the Sustainable Forestry in Southern ChinaNanjing Forestry UniversityNanjingChina
- College of ForestryNanjing Forestry UniversityNanjingChina
- Southern Tree Seed Inspection CenterNational Forestry AdministrationNanjingChina
| | - Huapeng Bao
- Jiangsu Agricultural Expo ParkJiangsu Vocational College of Agriculture and ForestryZhenjiangChina
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Tognacca RS, Botto JF. Post-transcriptional regulation of seed dormancy and germination: Current understanding and future directions. PLANT COMMUNICATIONS 2021; 2:100169. [PMID: 34327318 PMCID: PMC8299061 DOI: 10.1016/j.xplc.2021.100169] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2020] [Revised: 01/26/2021] [Accepted: 02/13/2021] [Indexed: 05/06/2023]
Abstract
Seed dormancy is a developmental checkpoint that prevents mature seeds from germinating under conditions that are otherwise favorable for germination. Temperature and light are the most relevant environmental factors that regulate seed dormancy and germination. These environmental cues can trigger molecular and physiological responses including hormone signaling, particularly that of abscisic acid and gibberellin. The balance between the content and sensitivity of these hormones is the key to the regulation of seed dormancy. Temperature and light tightly regulate the transcription of thousands of genes, as well as other aspects of gene expression such as mRNA splicing, translation, and stability. Chromatin remodeling determines specific transcriptional outputs, and alternative splicing leads to different outcomes and produces transcripts that encode proteins with altered or lost functions. Proper regulation of chromatin remodeling and alternative splicing may be highly relevant to seed germination. Moreover, microRNAs are also critical for the control of gene expression in seeds. This review aims to discuss recent updates on post-transcriptional regulation during seed maturation, dormancy, germination, and post-germination events. We propose future prospects for understanding how different post-transcriptional processes in crop seeds can contribute to the design of genotypes with better performance and higher productivity.
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Affiliation(s)
- Rocío Soledad Tognacca
- Consejo Nacional de Investigaciones Científicas y Técnicas, Universidad de Buenos Aires, Instituto de Fisiología, Biología Molecular y Neurociencias (IFIBYNE), Facultad de Ciencias Exactas y Naturales, CP1428 Buenos Aires, Argentina
- Universidad de Buenos Aires, Consejo Nacional de Investigaciones Científicas y Técnicas, Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura (IFEVA), Facultad de Agronomía, CP1417 Buenos Aires, Argentina
| | - Javier Francisco Botto
- Universidad de Buenos Aires, Consejo Nacional de Investigaciones Científicas y Técnicas, Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura (IFEVA), Facultad de Agronomía, CP1417 Buenos Aires, Argentina
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Jiang A, Guo Z, Pan J, Yang Y, Zhuang Y, Zuo D, Hao C, Gao Z, Xin P, Chu J, Zhong S, Li L. The PIF1-miR408-PLANTACYANIN repression cascade regulates light-dependent seed germination. THE PLANT CELL 2021; 33:1506-1529. [PMID: 33616669 PMCID: PMC8254493 DOI: 10.1093/plcell/koab060] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2020] [Accepted: 02/11/2021] [Indexed: 05/15/2023]
Abstract
Light-dependent seed germination is a vital process for many seed plants. A decisive event in light-induced germination is degradation of the central repressor PHYTOCHROME INTERACTING FACTOR 1 (PIF1). The balance between gibberellic acid (GA) and abscisic acid (ABA) helps to control germination. However, the cellular mechanisms linking PIF1 turnover to hormonal balancing remain elusive. Here, employing far-red light-induced Arabidopsis thaliana seed germination as the experimental system, we identified PLANTACYANIN (PCY) as an inhibitor of germination. It is a blue copper protein associated with the vacuole that is both highly expressed in mature seeds and rapidly silenced during germination. Molecular analyses showed that PIF1 binds to the miR408 promoter and represses miR408 accumulation. This in turn posttranscriptionally modulates PCY abundance, forming the PIF1-miR408-PCY repression cascade for translating PIF1 turnover to PCY turnover during early germination. Genetic analysis, RNA-sequencing, and hormone quantification revealed that PCY is necessary and sufficient to maintain the PIF1-mediated seed transcriptome and the low-GA-high-ABA state. Furthermore, we found that PCY domain organization and regulation by miR408 are conserved features in seed plants. These results revealed a cellular mechanism whereby PIF1-relayed external light signals are converted through PCY turnover to internal hormonal profiles for controlling seed germination.
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Affiliation(s)
- Anlong Jiang
- State Key Laboratory of Protein and Plant Gene Research, School of Life Sciences and School of Advanced Agricultural Sciences, Peking University, Beijing 100871, China
- Peking-Tsinghua Center for Life Sciences, Academy for Advanced Interdisciplinary Studies, Peking University, Beijing 100871, China
| | - Zhonglong Guo
- State Key Laboratory of Protein and Plant Gene Research, School of Life Sciences and School of Advanced Agricultural Sciences, Peking University, Beijing 100871, China
| | - Jiawei Pan
- State Key Laboratory of Protein and Plant Gene Research, School of Life Sciences and School of Advanced Agricultural Sciences, Peking University, Beijing 100871, China
| | - Yanzhi Yang
- State Key Laboratory of Protein and Plant Gene Research, School of Life Sciences and School of Advanced Agricultural Sciences, Peking University, Beijing 100871, China
| | - Yan Zhuang
- Peking-Tsinghua Center for Life Sciences, Academy for Advanced Interdisciplinary Studies, Peking University, Beijing 100871, China
| | - Daqing Zuo
- State Key Laboratory of Protein and Plant Gene Research, School of Life Sciences and School of Advanced Agricultural Sciences, Peking University, Beijing 100871, China
| | - Chen Hao
- State Key Laboratory of Protein and Plant Gene Research, School of Life Sciences and School of Advanced Agricultural Sciences, Peking University, Beijing 100871, China
| | - Zhaoxu Gao
- State Key Laboratory of Protein and Plant Gene Research, School of Life Sciences and School of Advanced Agricultural Sciences, Peking University, Beijing 100871, China
| | - Peiyong Xin
- National Center for Plant Gene Research (Beijing), Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China
| | - Jinfang Chu
- National Center for Plant Gene Research (Beijing), Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China
| | - Shangwei Zhong
- State Key Laboratory of Protein and Plant Gene Research, School of Life Sciences and School of Advanced Agricultural Sciences, Peking University, Beijing 100871, China
| | - Lei Li
- State Key Laboratory of Protein and Plant Gene Research, School of Life Sciences and School of Advanced Agricultural Sciences, Peking University, Beijing 100871, China
- Peking-Tsinghua Center for Life Sciences, Academy for Advanced Interdisciplinary Studies, Peking University, Beijing 100871, China
- Author for correspondence:
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Zhang H, Hu Z, Yang Y, Liu X, Lv H, Song BH, An YQC, Li Z, Zhang D. Transcriptome profiling reveals the spatial-temporal dynamics of gene expression essential for soybean seed development. BMC Genomics 2021; 22:453. [PMID: 34134624 PMCID: PMC8207594 DOI: 10.1186/s12864-021-07783-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2020] [Accepted: 06/08/2021] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Seeds are the economic basis of oilseed crops, especially soybeans, the most widely cultivated oilseed crop worldwide. Seed development is accompanied by a multitude of diverse cellular processes, and revealing the underlying regulatory activities is critical for seed improvement. RESULTS In this study, we profiled the transcriptomes of developing seeds at 20, 25, 30, and 40 days after flowering (DAF), as these stages represent critical time points of seed development from early to full development. We identified a set of highly abundant genes and highlighted the importance of these genes in supporting nutrient accumulation and transcriptional regulation for seed development. We identified 8925 differentially expressed genes (DEGs) that exhibited temporal expression patterns over the course and expression specificities in distinct tissues, including seeds and nonseed tissues (roots, stems, and leaves). Genes specific to nonseed tissues might have tissue-associated roles, with relatively low transcript abundance in developing seeds, suggesting their spatially supportive roles in seed development. Coexpression network analysis identified several underexplored genes in soybeans that bridge tissue-specific gene modules. CONCLUSIONS Our study provides a global view of gene activities and biological processes critical for seed formation in soybeans and prioritizes a set of genes for further study. The results of this study help to elucidate the mechanism controlling seed development and storage reserves.
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Affiliation(s)
- Hengyou Zhang
- Collaborative Innovation Center of Henan Grain Crops, College of Agronomy, Henan Agricultural University, Zhengzhou, 450002, China
- The Innovative Academy of Seed Design, Key Laboratory of Soybean Molecular Design Breeding, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Harbin, 150081, China
| | - Zhenbin Hu
- Department of Biology, Saint Louis University, St. Louis, MO, USA
| | - Yuming Yang
- Collaborative Innovation Center of Henan Grain Crops, College of Agronomy, Henan Agricultural University, Zhengzhou, 450002, China
| | - Xiaoqian Liu
- Collaborative Innovation Center of Henan Grain Crops, College of Agronomy, Henan Agricultural University, Zhengzhou, 450002, China
| | - Haiyan Lv
- Collaborative Innovation Center of Henan Grain Crops, College of Agronomy, Henan Agricultural University, Zhengzhou, 450002, China
| | - Bao-Hua Song
- Department of Biological Sciences, University of North Carolina at Charlotte, Charlotte, NC, 28223, USA
| | - Yong-Qiang Charles An
- US Department of Agriculture, Agricultural Research Service, Midwest Area, Plant Genetics Research Unit at Donald Danforth Plant Science Center, St. Louis, MO, 63132, USA
| | - Zhimin Li
- Collaborative Innovation Center of Henan Grain Crops, College of Agronomy, Henan Agricultural University, Zhengzhou, 450002, China.
| | - Dan Zhang
- Collaborative Innovation Center of Henan Grain Crops, College of Agronomy, Henan Agricultural University, Zhengzhou, 450002, China.
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Kambhampati S, Aznar-Moreno JA, Bailey SR, Arp JJ, Chu KL, Bilyeu KD, Durrett TP, Allen DK. Temporal changes in metabolism late in seed development affect biomass composition. PLANT PHYSIOLOGY 2021; 186:874-890. [PMID: 33693938 PMCID: PMC8195533 DOI: 10.1093/plphys/kiab116] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/19/2021] [Accepted: 02/13/2021] [Indexed: 05/23/2023]
Abstract
The negative association between protein and oil production in soybean (Glycine max) seed is well-documented. However, this inverse relationship is based primarily on the composition of mature seed, which reflects the cumulative result of events over the course of soybean seed development and therefore does not convey information specific to metabolic fluctuations during developmental growth regimes. In this study, we assessed maternal nutrient supply via measurement of seed coat exudates and metabolite levels within the cotyledon throughout development to identify trends in the accumulation of central carbon and nitrogen metabolic intermediates. Active metabolic activity during late seed development was probed through transient labeling with 13C substrates. The results indicated: (1) a drop in lipid contents during seed maturation with a concomitant increase in carbohydrates, (2) a transition from seed filling to maturation phases characterized by quantitatively balanced changes in carbon use and CO2 release, (3) changes in measured carbon and nitrogen resources supplied maternally throughout development, (4) 13C metabolite production through gluconeogenic steps for sustained carbohydrate accumulation as the maternal nutrient supply diminishes, and (5) oligosaccharide biosynthesis within the seed coat during the maturation phase. These results highlight temporal engineering targets for altering final biomass composition to increase the value of soybeans and a path to breaking the inverse correlation between seed protein and oil content.
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Affiliation(s)
| | - Jose A Aznar-Moreno
- Department of Biochemistry and Molecular Biophysics, Kansas State University, Manhattan, Kansas 66506, USA
| | - Sally R Bailey
- United States Department of Agriculture, Agricultural Research Service, St. Louis, Missouri 63132, USA
| | - Jennifer J Arp
- Donald Danforth Plant Science Center, St. Louis, Missouri 63132, USA
| | - Kevin L Chu
- Donald Danforth Plant Science Center, St. Louis, Missouri 63132, USA
- United States Department of Agriculture, Agricultural Research Service, St. Louis, Missouri 63132, USA
- Institute of Biological Chemistry, Washington State University, Pullman, Washington 99164, USA
| | - Kristin D Bilyeu
- United States Department of Agriculture, Agricultural Research Service, Columbia, Missouri 65211, USA
| | - Timothy P Durrett
- Department of Biochemistry and Molecular Biophysics, Kansas State University, Manhattan, Kansas 66506, USA
| | - Doug K Allen
- Donald Danforth Plant Science Center, St. Louis, Missouri 63132, USA
- United States Department of Agriculture, Agricultural Research Service, St. Louis, Missouri 63132, USA
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Burrowing Parrots Cyanoliseus patagonus as Long-Distance Seed Dispersers of Keystone Algarrobos, Genus Prosopis, in the Monte Desert. DIVERSITY 2021. [DOI: 10.3390/d13050204] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Understanding of ecosystem structure and functioning requires detailed knowledge about plant–animal interactions, especially when keystone species are involved. The recent consideration of parrots as legitimate seed dispersers has widened the range of mechanisms influencing the life cycle of many plant species. We examined the interactions between the burrowing parrot Cyanoliseus patagonus and two dominant algarrobo trees (Prosopis alba and Prosopis nigra) in the Monte Desert, Argentina. We recorded the abundance and foraging behaviour of parrots; quantified the handling, consumption, wasting, and dispersal of ripe and unripe pods; and tested the viability of soft and hard ripe seeds wasted and transported by parrots. We found a high abundance of burrowing parrots. They predated on soft seeds from unripe pods while exclusively feeding upon pulp wrapping hard seeds from ripe pods. Frequent pod wasting beneath the plant or transport at a distance invariably implied the dispersal of multiple seeds in each event. Moreover, soft seeds retained viability after desiccation outside the mother plant, suggesting effective seed dispersal after partial pod predation due to a predator satiation effect. In about half of the foraging flocks, at least one parrot departed in flight with pods in its beak, with 10–34% of the flock components moving pods at distances averaging 238 m (P. alba) and 418 m (P. nigra). A snapshot sampling of faeces from livestock and wild mammals suggested a low frequency of seed dispersal by endozoochory and secondary dispersal by ants and dung beetles. The nomadic movements and long flights of burrowing parrots between breeding and foraging sites can lead to the dispersal of huge amounts of seeds across large areas that are sequentially exploited. Further research should evaluate the role of the burrowing parrot as a functionally unique species in the structure of the Monte Desert woods and the genetic structure of algarrobo species.
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Wang WQ, Wang Y, Song XJ, Zhang Q, Cheng HY, Liu J, Song SQ. Proteomic Analysis of Desiccation Tolerance and Its Re-Establishment in Different Embryo Axis Tissues of Germinated Pea Seeds. J Proteome Res 2021; 20:2352-2363. [PMID: 33739120 DOI: 10.1021/acs.jproteome.0c00860] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The model of loss and re-establishment of desiccation tolerance (DT) in germinated seeds has been well developed to explore the mechanisms associated with DT, but little attention has been paid to the tissue variation in this model. Herein, we investigated DT in different embryo axis tissues of germinated pea seeds and its re-establishment by poly(ethylene glycol) (PEG) treatment and then employed an iTRAQ-based proteomic method to explore the underlying mechanisms. DT varied among the four embryo axis parts of germinated seeds: epicotyl > hypocotyl-E (hypocotyl part attached to the epicotyl) > hypocotyl-R (hypocotyl part attached to the radicle) > radicle. Meanwhile, PEG treatment of germinated seeds resulted in a differential extent of DT re-establishment in these tissues. Proteins involved in detoxification and stress response were enriched in desiccation-tolerant hypocotyls-E and epicotyls of germinated seeds, respectively. Upon rehydration, proteome change during dehydration was recovered in the hypocotyls-E but not in the radicles. PEG treatment of germinated seeds led to numerous changes in proteins, in abundance in desiccation-sensitive radicles and hypocotyls-R, of which many accumulated in the hypocotyls-E and epicotyls before the treatment. We hypothesized that accumulation of groups 1 and 5 LEA proteins and proteins related to detoxification, ABA, ethylene, and calcium signaling contributed mainly to the variation of DT in different tissues and its re-establishment.
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Affiliation(s)
- Wei-Qing Wang
- Key Laboratory of Plant Molecular Physiology, Institute of Botany, The Chinese Academy of Sciences, Beijing 100093, China
| | - Yue Wang
- Key Laboratory of Plant Molecular Physiology, Institute of Botany, The Chinese Academy of Sciences, Beijing 100093, China
| | - Xian-Jun Song
- Key Laboratory of Plant Molecular Physiology, Institute of Botany, The Chinese Academy of Sciences, Beijing 100093, China
| | - Qi Zhang
- Guangdong Provincial Key Laboratory for Crop Germplasm Resources Preservation and Utilization, Agro-biological Gene Research Center, Guangdong Academy of Agricultural Sciences, Guangzhou 510640, China
| | - Hong-Yan Cheng
- Key Laboratory of Plant Molecular Physiology, Institute of Botany, The Chinese Academy of Sciences, Beijing 100093, China
| | - Jun Liu
- Guangdong Provincial Key Laboratory for Crop Germplasm Resources Preservation and Utilization, Agro-biological Gene Research Center, Guangdong Academy of Agricultural Sciences, Guangzhou 510640, China
| | - Song-Quan Song
- Key Laboratory of Plant Molecular Physiology, Institute of Botany, The Chinese Academy of Sciences, Beijing 100093, China
- Guangdong Provincial Key Laboratory for Crop Germplasm Resources Preservation and Utilization, Agro-biological Gene Research Center, Guangdong Academy of Agricultural Sciences, Guangzhou 510640, China
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Gerna D, Arc E, Holzknecht M, Roach T, Jansen-Dürr P, Weiss AK, Kranner I. AtFAHD1a: A New Player Influencing Seed Longevity and Dormancy in Arabidopsis? Int J Mol Sci 2021; 22:2997. [PMID: 33804275 PMCID: PMC8001395 DOI: 10.3390/ijms22062997] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2021] [Revised: 03/10/2021] [Accepted: 03/10/2021] [Indexed: 11/16/2022] Open
Abstract
Fumarylacetoacetate hydrolase (FAH) proteins form a superfamily found in Archaea, Bacteria, and Eukaryota. However, few fumarylacetoacetate hydrolase domain (FAHD)-containing proteins have been studied in Metazoa and their role in plants remains elusive. Sequence alignments revealed high homology between two Arabidopsis thaliana FAHD-containing proteins and human FAHD1 (hFAHD1) implicated in mitochondrial dysfunction-associated senescence. Transcripts of the closest hFAHD1 orthologue in Arabidopsis (AtFAHD1a) peak during seed maturation drying, which influences seed longevity and dormancy. Here, a homology study was conducted to assess if AtFAHD1a contributes to seed longevity and vigour. We found that an A. thaliana T-DNA insertional line (Atfahd1a-1) had extended seed longevity and shallower thermo-dormancy. Compared to the wild type, metabolite profiling of dry Atfahd1a-1 seeds showed that the concentrations of several amino acids, some reducing monosaccharides, and δ-tocopherol dropped, whereas the concentrations of dehydroascorbate, its catabolic intermediate threonic acid, and ascorbate accumulated. Furthermore, the redox state of the glutathione disulphide/glutathione couple shifted towards a more reducing state in dry mature Atfahd1a-1 seeds, suggesting that AtFAHD1a affects antioxidant redox poise during seed development. In summary, AtFAHD1a appears to be involved in seed redox regulation and to affect seed quality traits such as seed thermo-dormancy and longevity.
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Affiliation(s)
- Davide Gerna
- Department of Botany, University of Innsbruck, Sternwartestraße 15, 6020 Innsbruck, Austria; (E.A.); (T.R.); (I.K.)
- Center for Molecular Biosciences Innsbruck (CMBI), University of Innsbruck, 6020 Innsbruck, Austria; (M.H.); (P.J.-D.)
| | - Erwann Arc
- Department of Botany, University of Innsbruck, Sternwartestraße 15, 6020 Innsbruck, Austria; (E.A.); (T.R.); (I.K.)
- Center for Molecular Biosciences Innsbruck (CMBI), University of Innsbruck, 6020 Innsbruck, Austria; (M.H.); (P.J.-D.)
| | - Max Holzknecht
- Center for Molecular Biosciences Innsbruck (CMBI), University of Innsbruck, 6020 Innsbruck, Austria; (M.H.); (P.J.-D.)
- Research Institute for Biomedical Aging Research, University of Innsbruck, Rennweg 10, 6020 Innsbruck, Austria
| | - Thomas Roach
- Department of Botany, University of Innsbruck, Sternwartestraße 15, 6020 Innsbruck, Austria; (E.A.); (T.R.); (I.K.)
- Center for Molecular Biosciences Innsbruck (CMBI), University of Innsbruck, 6020 Innsbruck, Austria; (M.H.); (P.J.-D.)
| | - Pidder Jansen-Dürr
- Center for Molecular Biosciences Innsbruck (CMBI), University of Innsbruck, 6020 Innsbruck, Austria; (M.H.); (P.J.-D.)
- Research Institute for Biomedical Aging Research, University of Innsbruck, Rennweg 10, 6020 Innsbruck, Austria
| | - Alexander K.H. Weiss
- Center for Molecular Biosciences Innsbruck (CMBI), University of Innsbruck, 6020 Innsbruck, Austria; (M.H.); (P.J.-D.)
- Research Institute for Biomedical Aging Research, University of Innsbruck, Rennweg 10, 6020 Innsbruck, Austria
| | - Ilse Kranner
- Department of Botany, University of Innsbruck, Sternwartestraße 15, 6020 Innsbruck, Austria; (E.A.); (T.R.); (I.K.)
- Center for Molecular Biosciences Innsbruck (CMBI), University of Innsbruck, 6020 Innsbruck, Austria; (M.H.); (P.J.-D.)
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Li L, Dou N, Zhang H, Wu C. The versatile GABA in plants. PLANT SIGNALING & BEHAVIOR 2021; 16:1862565. [PMID: 33404284 PMCID: PMC7889023 DOI: 10.1080/15592324.2020.1862565] [Citation(s) in RCA: 90] [Impact Index Per Article: 30.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/23/2020] [Revised: 12/05/2020] [Accepted: 12/07/2020] [Indexed: 05/19/2023]
Abstract
Gamma-aminobutyric acid (GABA) is a ubiquitous four-carbon, non-protein amino acid. GABA has been widely studied in animal central nervous systems, where it acts as an inhibitory neurotransmitter. In plants, it is metabolized through the GABA shunt pathway, a bypass of the tricarboxylic acid (TCA) cycle. Additionally, it can be synthesized through the polyamine metabolic pathway. GABA acts as a signal in Agrobacterium tumefaciens-mediated plant gene transformation and in plant development, especially in pollen tube elongation (to enter the ovule), root growth, fruit ripening, and seed germination. It is accumulated during plant responses to environmental stresses and pathogen and insect attacks. A high concentration of GABA elevates plant stress tolerance by improving photosynthesis, inhibiting reactive oxygen species (ROS) generation, activating antioxidant enzymes, and regulating stomatal opening in drought stress. The transporters of GABA in plants are reviewed in this work. We summarize the recent research on GABA function and transporters with the goal of providing a review of GABA in plants.
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Affiliation(s)
- Li Li
- Shandong Provincial Key Laboratory of Plant Stress Research, College of Life Science, Shandong Normal University, Ji’nan, Shandong, China
| | - Na Dou
- Shandong Provincial Key Laboratory of Plant Stress Research, College of Life Science, Shandong Normal University, Ji’nan, Shandong, China
| | - Hui Zhang
- Shandong Provincial Key Laboratory of Plant Stress Research, College of Life Science, Shandong Normal University, Ji’nan, Shandong, China
| | - Chunxia Wu
- Shandong Provincial Key Laboratory of Plant Stress Research, College of Life Science, Shandong Normal University, Ji’nan, Shandong, China
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He C, Liu X, Teixeira da Silva JA, Wang H, Peng T, Zhang M, Si C, Yu Z, Tan J, Zhang J, Luo J, Duan J. Characterization of LEA genes in Dendrobium officinale and one Gene in induction of callus. JOURNAL OF PLANT PHYSIOLOGY 2021; 258-259:153356. [PMID: 33423816 DOI: 10.1016/j.jplph.2020.153356] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/25/2020] [Accepted: 12/21/2020] [Indexed: 06/12/2023]
Abstract
Late embryogenesis abundant (LEA) proteins are widely involved in plant stress responsive, while their involvement in callus formation is largest unknown. In this study, we identified and conducted expression analysis of the LEA genes from Phalaenopsis equestris and Dendrobium officinale, and characterized a LEA gene from D. officinale. A total 57 and 59 LEA genes were identified in P. equestris and D. officinale, respectively. A phylogenetic analysis showed that AtM, LEA_5 and Dehydrin groups were absent in both orchids. LEA_1 group genes were strongly expressed in seeds, significantly down-regulated in flowers, and absent in vegetative organs (leaves, stems and roots) in both orchids. Moreover, LEA_1 and LEA_4 group genes from D. officinale were abundant in the protocorm-like body stage and were dramatically up-regulated in response to abscisic acid and salinity stress. A LEA_1 gene (DoLEA43) was selected for further functional analysis. DoLEA43 protein was localized in the cytoplasm and nucleus, and its promoter contained a WUN-motif that was modulated by wounding. Overexpression of DoLEA43 in Arabidopsis enhanced callus induction, causing changes to callus formation-related genes such as WIND1. Our results indicate the involvement of LEA genes in the induction of callus, which provide insights into plant regeneration.
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Affiliation(s)
- Chunmei He
- Key Laboratory of South China Agricultural Plant Molecular Analysis and Gene Improvement, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, 510650, China
| | - Xuncheng Liu
- Key Laboratory of South China Agricultural Plant Molecular Analysis and Gene Improvement, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, 510650, China
| | - Jaime A Teixeira da Silva
- Independent researcher, P. O. Box 7, Miki-cho post office, Ikenobe 3011-2, Kagawa-ken, 761-0799, Japan
| | - Haobin Wang
- Key Laboratory of South China Agricultural Plant Molecular Analysis and Gene Improvement, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, 510650, China; University of the Chinese Academy of Sciences, Beijing, 100049, China
| | - Tao Peng
- Key Laboratory of South China Agricultural Plant Molecular Analysis and Gene Improvement, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, 510650, China; University of the Chinese Academy of Sciences, Beijing, 100049, China
| | - Mingze Zhang
- Key Laboratory of South China Agricultural Plant Molecular Analysis and Gene Improvement, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, 510650, China; University of the Chinese Academy of Sciences, Beijing, 100049, China
| | - Can Si
- Key Laboratory of South China Agricultural Plant Molecular Analysis and Gene Improvement, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, 510650, China; University of the Chinese Academy of Sciences, Beijing, 100049, China
| | - Zhenming Yu
- Key Laboratory of South China Agricultural Plant Molecular Analysis and Gene Improvement, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, 510650, China
| | - Jianwen Tan
- College of Forestry and Landscape Architecture, South China Agricultural University, Guangzhou, 510642, China
| | - Jianxia Zhang
- College of Forestry and Landscape Architecture, South China Agricultural University, Guangzhou, 510642, China
| | - Jianping Luo
- School of Food Engineering and Biotechnology, Hefei University of Technology, Hefei, 230009, China
| | - Jun Duan
- Key Laboratory of South China Agricultural Plant Molecular Analysis and Gene Improvement, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, 510650, China.
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Functional characterization of an unobtrusive protein, CkMT4, in re-establishing desiccation tolerance in germinating seeds. Int J Biol Macromol 2021; 173:180-192. [PMID: 33482205 DOI: 10.1016/j.ijbiomac.2021.01.011] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2020] [Revised: 01/01/2021] [Accepted: 01/03/2021] [Indexed: 01/02/2023]
Abstract
Desiccation tolerance (DT) is gradually lost during seed germination, while it can be re-established by pre-treatment with polyethylene glycol (PEG) and/or abscisic acid (ABA). Increasing knowledge is available on several stress-related proteins in DT re-establishment in herb seeds, but limited information exists on novel proteins in wood seeds. This study aimed to investigate the role of metallothionein CkMT4, a protein species with the highest fold increase in abundance in Caragana korshinskii seeds on PEG treatment. The fluctuation in mRNA levels of CkMT4 during seed development was consistent with the changes in DT, and the expression of CkMT4 could be up-regulated by ABA. Besides metal-binding capacity, CkMT4 might supply Cu2+/Zn2+ to superoxide dismutase (SOD) under high redox potential provided by PEG treatment for excess reactive oxygen species (ROS) scavenging. The overexpression of CkMT4 in yeast results in enhanced oxidation resistance. Experimentally, this study demonstrated the overexpression of CkMT4 in Arabidopsis seeds benefited the re-establishment of DT and enhanced the activity of SOD. On the whole, these findings suggested that CkMT4 facilitated the re-establishment of DT in C. korshinskii seeds mainly through diminishing excess ROS, which put the mechanism underlying the re-establishment of DT in xerophytic wood seeds into a new perspective.
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Genomic Prediction Informed by Biological Processes Expands Our Understanding of the Genetic Architecture Underlying Free Amino Acid Traits in Dry Arabidopsis Seeds. G3-GENES GENOMES GENETICS 2020; 10:4227-4239. [PMID: 32978264 PMCID: PMC7642941 DOI: 10.1534/g3.120.401240] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Plant growth, development, and nutritional quality depends upon amino acid homeostasis, especially in seeds. However, our understanding of the underlying genetics influencing amino acid content and composition remains limited, with only a few candidate genes and quantitative trait loci identified to date. Improved knowledge of the genetics and biological processes that determine amino acid levels will enable researchers to use this information for plant breeding and biological discovery. Toward this goal, we used genomic prediction to identify biological processes that are associated with, and therefore potentially influence, free amino acid (FAA) composition in seeds of the model plant Arabidopsis thaliana. Markers were split into categories based on metabolic pathway annotations and fit using a genomic partitioning model to evaluate the influence of each pathway on heritability explained, model fit, and predictive ability. Selected pathways included processes known to influence FAA composition, albeit to an unknown degree, and spanned four categories: amino acid, core, specialized, and protein metabolism. Using this approach, we identified associations for pathways containing known variants for FAA traits, in addition to finding new trait-pathway associations. Markers related to amino acid metabolism, which are directly involved in FAA regulation, improved predictive ability for branched chain amino acids and histidine. The use of genomic partitioning also revealed patterns across biochemical families, in which serine-derived FAAs were associated with protein related annotations and aromatic FAAs were associated with specialized metabolic pathways. Taken together, these findings provide evidence that genomic partitioning is a viable strategy to uncover the relative contributions of biological processes to FAA traits in seeds, offering a promising framework to guide hypothesis testing and narrow the search space for candidate genes.
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Chen SC, Wu LM, Wang B, Dickie JB. Macroevolutionary patterns in seed component mass and different evolutionary trajectories across seed desiccation responses. THE NEW PHYTOLOGIST 2020; 228:770-777. [PMID: 32463920 DOI: 10.1111/nph.16706] [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: 02/19/2020] [Accepted: 05/15/2020] [Indexed: 06/11/2023]
Abstract
Seed coat and seed reserve show substantial mass variation, play different roles in plant life strategies and are shaped by different selective forces. However, remarkably little is known about the macroevolution of the relative allocation in seed components and its influence on important ecophysiological processes. Using phylogenetic comparative methods and evolutionary modelling approaches, we modelled mass changes in seed components along individual lineages for 940 species and compared the patterns across seed desiccation responses. Seed component allocation was driven primarily by changes in reserve mass rather than coat mass, as evolutionary rates in reserve mass significantly outpaced those in coat mass. Although the scaling patterns between reserve mass and coat mass were similar across desiccation responses, desiccation-sensitive seeds allocated more and evolved faster in reserve compared to desiccation-tolerant seeds. The findings emphasize the relative importance of reserve to coat in the evolution of plant reproductive strategies, revealing potential ecological advantages gained by enlarged reserve. As the first quantification of the evolutionary tempo and mode of seed component mass, our study allows a detailed interpretation of evolutionary pathways underlying seed storage behaviours and advances the understanding of the evolution of desiccation sensitivity in seeds.
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Affiliation(s)
- Si-Chong Chen
- Millennium Seed Bank, Royal Botanic Gardens Kew, Wakehurst, West Sussex, RH17 6TN, UK
| | - La-Mei Wu
- Centre for Integrative Conservation, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Mengla, Yunnan, 666303, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Bo Wang
- Centre for Integrative Conservation, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Mengla, Yunnan, 666303, China
- School of Resources and Environmental Engineering, Anhui University, Hefei, 230601, China
| | - John B Dickie
- Millennium Seed Bank, Royal Botanic Gardens Kew, Wakehurst, West Sussex, RH17 6TN, UK
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Han Q, Chen K, Yan D, Hao G, Qi J, Wang C, Dirk LMA, Bruce Downie A, Gong J, Wang J, Zhao T. ZmDREB2A regulates ZmGH3.2 and ZmRAFS, shifting metabolism towards seed aging tolerance over seedling growth. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2020; 104:268-282. [PMID: 32662115 DOI: 10.1111/tpj.14922] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2019] [Revised: 06/01/2020] [Accepted: 06/12/2020] [Indexed: 06/11/2023]
Abstract
Seed aging tolerance and rapid seedling growth are important agronomic traits for crop production; however, how these traits are controlled at the molecular level remains largely unknown. The unaged seeds of two independent maize DEHYDRATION-RESPONSIVE ELEMENT-BINDING2A mutant (zmdreb2a) lines, with decreased expression of GRETCHEN HAGEN3.2 (ZmGH3.2, encoding indole-3-acetic acid [IAA] deactivating enzyme), and increased IAA in their embryo, produced longer seedling shoots and roots, than the null segregant (NS) controls. However, the zmdreb2a seeds, with decreased expression of RAFFINOSE SYNTHASE (ZmRAFS) and less raffinose in their embryo, exhibit decreased seed aging tolerance, than the NS controls. Overexpression of ZmDREB2A in maize protoplasts increased the expression of ZmGH3.2, ZmRAFS genes and that of a Rennila LUCIFERASE reporter (Rluc) gene, which was controlled by either the ZmGH3.2- or ZmRAFS-promoter. Electrophoretic mobility shift assays and chromatin immunoprecipitation assay quantitative polymerase chain reaction showed that ZmDREB2A directly binds to the DRE motif of the promoters of both ZmGH3.2 and ZmRAFS. Exogenous supplementation of IAA to the unaged, germinating NS seeds increased subsequent seedling growth making them similar to the zmdreb2a seedlings from unaged seeds. These findings provide evidence that ZmDREB2A regulates the longevity of maize seed by stimulating the production of raffinose while simultaneously acting to limit auxin-mediated cell expansion.
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Affiliation(s)
- Qinghui Han
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Life Sciences, Northwest A&F University, Yangling, Shaanxi, 712100, China
- The Key Laboratory of Biology and Genetic Improvement of Maize in Arid Areas of the Northwest Region, Ministry of Agriculture, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Kelu Chen
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Life Sciences, Northwest A&F University, Yangling, Shaanxi, 712100, China
- The Key Laboratory of Biology and Genetic Improvement of Maize in Arid Areas of the Northwest Region, Ministry of Agriculture, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Dong Yan
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Life Sciences, Northwest A&F University, Yangling, Shaanxi, 712100, China
- The Key Laboratory of Biology and Genetic Improvement of Maize in Arid Areas of the Northwest Region, Ministry of Agriculture, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Guanglong Hao
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Life Sciences, Northwest A&F University, Yangling, Shaanxi, 712100, China
- The Key Laboratory of Biology and Genetic Improvement of Maize in Arid Areas of the Northwest Region, Ministry of Agriculture, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Junlong Qi
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Life Sciences, Northwest A&F University, Yangling, Shaanxi, 712100, China
- The Key Laboratory of Biology and Genetic Improvement of Maize in Arid Areas of the Northwest Region, Ministry of Agriculture, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Chunmei Wang
- The Biology Teaching and Research Core Facility, College of Life Sciences, Northwest A&F University, Yangling, Shaanxi, China
| | - Lynnette M A Dirk
- Department of Horticulture, Seed Biology Group, College of Agriculture, Food, and Environment, University of Kentucky, Lexington, KY, 40546, USA
| | - A Bruce Downie
- Department of Horticulture, Seed Biology Group, College of Agriculture, Food, and Environment, University of Kentucky, Lexington, KY, 40546, USA
| | - Jianhua Gong
- Center of Seed Science and Technology, Beijing Key Laboratory of Crop Genetics and Breeding, Innovation Center for Seed Technology (Ministry of Agriculture), China Agricultural University, Beijing, 100094, China
| | - Jianhua Wang
- Center of Seed Science and Technology, Beijing Key Laboratory of Crop Genetics and Breeding, Innovation Center for Seed Technology (Ministry of Agriculture), China Agricultural University, Beijing, 100094, China
| | - Tianyong Zhao
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Life Sciences, Northwest A&F University, Yangling, Shaanxi, 712100, China
- The Key Laboratory of Biology and Genetic Improvement of Maize in Arid Areas of the Northwest Region, Ministry of Agriculture, Northwest A&F University, Yangling, Shaanxi, 712100, China
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Yang L, Liu S, Lin R. The role of light in regulating seed dormancy and germination. JOURNAL OF INTEGRATIVE PLANT BIOLOGY 2020; 62:1310-1326. [PMID: 32729981 DOI: 10.1111/jipb.13001] [Citation(s) in RCA: 57] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/13/2020] [Accepted: 07/29/2020] [Indexed: 05/22/2023]
Abstract
Seed dormancy is an adaptive trait in plants. Breaking seed dormancy determines the timing of germination and is, thereby essential for ensuring plant survival and agricultural production. Seed dormancy and the subsequent germination are controlled by both internal cues (mainly hormones) and environmental signals. In the past few years, the roles of plant hormones in regulating seed dormancy and germination have been uncovered. However, we are only beginning to understand how light signaling pathways modulate seed dormancy and interaction with endogenous hormones. In this review, we summarize current views of the molecular mechanisms by which light controls the induction, maintenance and release of seed dormancy, as well as seed germination, by regulating hormone metabolism and signaling pathways.
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Affiliation(s)
- Liwen Yang
- Key Laboratory of Photobiology, Institute of Botany, the Chinese Academy of Sciences, Beijing, 100093, China
| | - Shuangrong Liu
- Key Laboratory of Photobiology, Institute of Botany, the Chinese Academy of Sciences, Beijing, 100093, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Rongcheng Lin
- Key Laboratory of Photobiology, Institute of Botany, the Chinese Academy of Sciences, Beijing, 100093, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
- CAS Center for Excellence in Molecular Plant Sciences, the Chinese Academy of Sciences, Beijing, 100093, China
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Alseekh S, Ofner I, Liu Z, Osorio S, Vallarino J, Last RL, Zamir D, Tohge T, Fernie AR. Quantitative trait loci analysis of seed-specialized metabolites reveals seed-specific flavonols and differential regulation of glycoalkaloid content in tomato. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2020; 103:2007-2024. [PMID: 32538521 DOI: 10.1111/tpj.14879] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/01/2019] [Revised: 06/05/2020] [Accepted: 06/12/2020] [Indexed: 05/07/2023]
Abstract
Given the potential health benefits (and adverse effects), of polyphenolic and steroidal glycoalkaloids in the diet there is a growing interest in fully elucidating the genetic control of their levels in foodstuffs. Here we carried out profiling of the specialized metabolites in the seeds of the Solanum pennellii introgression lines identifying 338 putative metabolite quantitative trait loci (mQTL) for flavonoids, steroidal glycoalkaloids and further specialized metabolites. Two putative mQTL for flavonols and one for steroidal glycoalkaloids were cross-validated by evaluation of the metabolite content of recombinants harboring smaller introgression in the corresponding QTL interval or by analysis of lines from an independently derived backcross inbred line population. The steroidal glycoalkaloid mQTL was localized to a chromosomal region spanning 14 genes, including a previously defined steroidal glycoalkaloid gene cluster. The flavonoid mQTL was further validated via the use of transient and stable overexpression of the Solyc12g098600 and Solyc12g096870 genes, which encode seed-specific uridine 5'-diphosphate-glycosyltransferases. The results are discussed in the context of our understanding of the accumulation of polyphenols and steroidal glycoalkaloids, and how this knowledge may be incorporated into breeding strategies aimed at improving nutritional aspects of plants as well as in fortifying them against abiotic stress.
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Affiliation(s)
- Saleh Alseekh
- Max-Planck-Institute of Molecular Plant Physiology, Am Mühlenberg 1, Potsdam-Golm, 14476, Germany
- Center of Plant Systems Biology and Biotechnology, Plovdiv, 4000, Bulgaria
| | - Itai Ofner
- Faculty of Agriculture, The Robert H. Smith Institute of Plant Sciences and Genetics in Agriculture at the Hebrew University of Jerusalem, Rehovot, 76100, Israel
| | - Zhongyuan Liu
- Horticultural Sciences, Plant Innovation Center, University of Florida, Gainesville, FL, 32611, USA
| | - Sonia Osorio
- Department of Molecular Biology and Biochemistry, Instituto de Hortofruiticultura Subtropical y Mediterranea "La Major" - University of Malaga - Consejo Superior de Investigaciones Cientificas (IHSM-UMA-CSIC), Campus de Teatinos, Malaga, 29071, Spain
| | - Jose Vallarino
- Max-Planck-Institute of Molecular Plant Physiology, Am Mühlenberg 1, Potsdam-Golm, 14476, Germany
| | - Robert L Last
- Department of Biochemistry and Molecular Biology, Michigan State University, East Lansing, MI, 48824, USA
- Department of Plant Biology, Michigan State University, East Lansing, MI, 48824, USA
| | - Dani Zamir
- Faculty of Agriculture, The Robert H. Smith Institute of Plant Sciences and Genetics in Agriculture at the Hebrew University of Jerusalem, Rehovot, 76100, Israel
| | - Takayuki Tohge
- Max-Planck-Institute of Molecular Plant Physiology, Am Mühlenberg 1, Potsdam-Golm, 14476, Germany
| | - Alisdair R Fernie
- Max-Planck-Institute of Molecular Plant Physiology, Am Mühlenberg 1, Potsdam-Golm, 14476, Germany
- Center of Plant Systems Biology and Biotechnology, Plovdiv, 4000, Bulgaria
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Klinger YP, Eckstein RL, Horlemann D, Otte A, Ludewig K. Germination of the invasive legume Lupinus polyphyllus depends on cutting date and seed morphology. NEOBIOTA 2020. [DOI: 10.3897/neobiota.60.56117] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
In semi-natural grasslands, mowing leads to the dispersal of species that have viable seeds at the right time. For invasive plant species in grasslands, dispersal by mowing should be avoided, and information on the effect of cutting date on the germination of invasive species is needed. We investigated the germination of seeds of the invasive legume Lupinus polyphyllus Lindl. depending on the cutting date. We measured seed traits associated with successful germination that can be assessed by managers for an improved timing of control measures. To this end, we sampled seeds of L. polyphyllus on six cutting dates and analyzed the germination of these seeds in climate chambers and under ambient weather conditions. We collected information on seed morphology (color/size/hardseededness) for each cutting date to identify seed traits associated with successful germination. Observed germination patterns were highly asynchronous and differed between seeds cut at different dates. Seeds cut early, being green and soft, tended to germinate in autumn. Seeds cut late, being dark and hard, were more prone to germinate the following spring, after winter stratification. This allows the species to utilize germination niches throughout the year, thus indicating a bet-hedging strategy. Seed color and the percentage of hard seeds were good predictors of germination percentage, but not of mean germination time and synchrony. Managers should prevent the species producing black and hard seeds, while cutting plants carrying green and soft seeds is less problematic. Furthermore, germination patterns differed between climate chambers and the common garden, mainly because germination of dormant seeds was lower in climate chambers. More germination experiments under ambient weather conditions should be carried out, as they can give information on the germination dynamics of invasive species.
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Dissecting the Seed Maturation and Germination Processes in the Non-Orthodox Quercus ilex Species Based on Protein Signatures as Revealed by 2-DE Coupled to MALDI-TOF/TOF Proteomics Strategy. Int J Mol Sci 2020; 21:ijms21144870. [PMID: 32660160 PMCID: PMC7402289 DOI: 10.3390/ijms21144870] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2020] [Revised: 07/06/2020] [Accepted: 07/07/2020] [Indexed: 12/15/2022] Open
Abstract
Unlike orthodox species, seed recalcitrance is poorly understood, especially at the molecular level. In this regard, seed maturation and germination were studied in the non-orthodox Quercus ilex by using a proteomics strategy based on two-dimensional gel electrophoresis coupled to matrix-assisted laser desorption ionization/time of flight (2-DE-MALDI-TOF).Cotyledons and embryo/radicle were sampled at different developmental stages, including early (M1–M3), middle (M4–M7), and late (M8–M9) seed maturation, and early (G1–G3) and late (G4–G5) germination. Samples corresponding to non-germinating, inviable, seeds were also included. Protein extracts were subjected to 2-dimensional gel electrophoresis (2-DE) and changes in the protein profiles were analyzed. Identified variable proteins were grouped according to their function, being the energy, carbohydrate, lipid, and amino acid metabolisms, together with protein fate, redox homeostasis, and response to stress are the most represented groups. Beyond the visual aspect, morphometry, weight, and water content, each stage had a specific protein signature. Clear tendencies for the different protein groups throughout the maturation and germination stages were observed for, respectively, cotyledon and the embryo axis. Proteins related to metabolism, translation, legumins, proteases, proteasome, and those stress related were less abundant in non-germinating seeds, it related to the loss of viability. Cotyledons were enriched with reserve proteins and protein-degrading enzymes, while the embryo axis was enriched with proteins of cell defense and rescue, including heat-shock proteins (HSPs) and antioxidants. The peaks of enzyme proteins occurred at the middle stages (M6–M7) in cotyledons and at late ones (M8–M9) in the embryo axis. Unlike orthodox seeds, proteins associated with glycolysis, tricarboxylic acid cycle, carbohydrate, amino acid and lipid metabolism are present at high levels in the mature seed and were maintained throughout the germination stages. The lack of desiccation tolerance in Q. ilex seeds may be associated with the repression of some genes, late embryogenesis abundant proteins being one of the candidates.
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Wang Y, Wu X, An Y, Xie H, Hao F, Tang H. Quantitative Metabonomic Phenotypes in Different Structures of Mung Bean ( Vigna radiata) Seeds and Their Germination-Associated Dynamic Changes. J Proteome Res 2020; 19:3352-3363. [PMID: 32498518 DOI: 10.1021/acs.jproteome.0c00236] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Plant seed germination involving dynamic water uptakes and biochemical changes is essential for preservation of plant germplasm resource and worldwide food supply. To understand the germination-associated compartmental biochemistry changes, we quantitatively analyzed the metabolite composition (metabonome) for embryonic axes, cotyledons, and testae of mung bean (Vigna radiata) seeds in three germination phases using the NMR-based metabonomics approach. We found that three structures of mung bean seeds had distinct metabonomic phenotypes dominated by 53 metabolites including amino acids, carbohydrates, organic acids, choline metabolites, nucleotides/nucleosides, and shikimate-mediated secondary metabolites together with calcium and magnesium cations. During germination, all three seed structures had outstanding but distinct metabonomic changes. Both embryonic axis and cotyledon showed remarkable metabolic changes related to degradation of carbohydrates and proteins, metabolism of amino acids, nucleotides/nucleosides, and choline together with energy metabolism and shikimate-mediated plant secondary metabolism. The metabonomic changes in these two structures were mostly related to multiple functions for biochemical activities in the former and nutrient mobilizations in the latter. In contrast, testa metabonomic changes mainly reflected the metabolite leakages from the other two structures. Phase 1 of germination was featured with degradation of oligosaccharides and proteins and recycling of stored nucleic acids together with anaerobic metabolisms, whereas phase 2 was dominated by energy metabolism, biosynthesis of osmolytes, and plant secondary metabolites. These provided essential metabolic information for understanding the biochemistry associated with early events of seed germination and possible metabolic functions of different seed structures for plant development.
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Affiliation(s)
- Yunlong Wang
- State Key Laboratory of Genetic Engineering, Zhongshan Hospital and School of Life Sciences, Human Phenome Institute, Metabonomics and Systems Biology Laboratory at Shanghai International Centre for Molecular Phenomics, Fudan University, Shanghai 200438, China
| | - Xiangyu Wu
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences, Wuhan 430071, China
| | - Yanpeng An
- State Key Laboratory of Genetic Engineering, Zhongshan Hospital and School of Life Sciences, Human Phenome Institute, Metabonomics and Systems Biology Laboratory at Shanghai International Centre for Molecular Phenomics, Fudan University, Shanghai 200438, China
| | - Hui Xie
- State Key Laboratory of Genetic Engineering, Zhongshan Hospital and School of Life Sciences, Human Phenome Institute, Metabonomics and Systems Biology Laboratory at Shanghai International Centre for Molecular Phenomics, Fudan University, Shanghai 200438, China
| | - Fuhua Hao
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences, Wuhan 430071, China
| | - Huiru Tang
- State Key Laboratory of Genetic Engineering, Zhongshan Hospital and School of Life Sciences, Human Phenome Institute, Metabonomics and Systems Biology Laboratory at Shanghai International Centre for Molecular Phenomics, Fudan University, Shanghai 200438, China.,State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences, Wuhan 430071, China
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Wojciechowska N, Alipour S, Stolarska E, Bilska K, Rey P, Kalemba EM. Peptide-Bound Methionine Sulfoxide (MetO) Levels and MsrB2 Abundance Are Differentially Regulated during the Desiccation Phase in Contrasted Acer Seeds. Antioxidants (Basel) 2020; 9:E391. [PMID: 32392756 PMCID: PMC7278694 DOI: 10.3390/antiox9050391] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2020] [Revised: 05/03/2020] [Accepted: 05/05/2020] [Indexed: 12/03/2022] Open
Abstract
Norway maple and sycamore produce desiccation-tolerant (orthodox) and desiccation-sensitive (recalcitrant) seeds, respectively. Drying affects reduction and oxidation (redox) status in seeds. Oxidation of methionine to methionine sulfoxide (MetO) and reduction via methionine sulfoxide reductases (Msrs) have never been investigated in relation to seed desiccation tolerance. MetO levels and the abundance of Msrs were investigated in relation to levels of reactive oxygen species (ROS) such as hydrogen peroxide, superoxide anion radical and hydroxyl radical (•OH), and the levels of ascorbate and glutathione redox couples in gradually dried seeds. Peptide-bound MetO levels were positively correlated with ROS concentrations in the orthodox seeds. In particular, •OH affected MetO levels as well as the abundance of MsrB2 solely in the embryonic axes of Norway maple seeds. In this species, MsrB2 was present in oxidized and reduced forms, and the latter was favored by reduced glutathione and ascorbic acid. In contrast, sycamore seeds accumulated higher ROS levels. Additionally, MsrB2 was oxidized in sycamore throughout dehydration. In this context, the three elements •OH level, MetO content and MsrB2 abundance, linked together uniquely to Norway maple seeds, might be considered important players of the redox network associated with desiccation tolerance.
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Affiliation(s)
- Natalia Wojciechowska
- Institute of Dendrology, Polish Academy of Sciences, Parkowa 5, 62-035 Kórnik, Poland; (N.W.); (S.A.); (E.S.); (K.B.)
- Department of General Botany, Institute of Experimental Biology, Faculty of Biology, Adam Mickiewicz University, Uniwersytetu Poznańskiego 6, 61-614 Poznań, Poland
| | - Shirin Alipour
- Institute of Dendrology, Polish Academy of Sciences, Parkowa 5, 62-035 Kórnik, Poland; (N.W.); (S.A.); (E.S.); (K.B.)
- Department of Forestry, Faculty of Agriculture and Natural Resources, Lorestan University, Khorramabad, Iran
| | - Ewelina Stolarska
- Institute of Dendrology, Polish Academy of Sciences, Parkowa 5, 62-035 Kórnik, Poland; (N.W.); (S.A.); (E.S.); (K.B.)
| | - Karolina Bilska
- Institute of Dendrology, Polish Academy of Sciences, Parkowa 5, 62-035 Kórnik, Poland; (N.W.); (S.A.); (E.S.); (K.B.)
| | - Pascal Rey
- Aix Marseille University (AMU), Commissariat à l’Energie Atomique et aux Energies Alternatives (CEA), Centre National de la Recherche Scientifique (CNRS), Biosciences and Biotechnology Institute of Aix-Marseille (BIAM), Plant Protective Proteins (PPV) Team, 13108 Saint Paul-Lez-Durance, France;
| | - Ewa Marzena Kalemba
- Institute of Dendrology, Polish Academy of Sciences, Parkowa 5, 62-035 Kórnik, Poland; (N.W.); (S.A.); (E.S.); (K.B.)
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Oliver MJ, Farrant JM, Hilhorst HWM, Mundree S, Williams B, Bewley JD. Desiccation Tolerance: Avoiding Cellular Damage During Drying and Rehydration. ANNUAL REVIEW OF PLANT BIOLOGY 2020; 71:435-460. [PMID: 32040342 DOI: 10.1146/annurev-arplant-071219-105542] [Citation(s) in RCA: 107] [Impact Index Per Article: 26.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
Desiccation of plants is often lethal but is tolerated by the majority of seeds and by vegetative tissues of only a small number of land plants. Desiccation tolerance is an ancient trait, lost from vegetative tissues following the appearance of tracheids but reappearing in several lineages when selection pressures favored its evolution. Cells of all desiccation-tolerant plants and seeds must possess a core set of mechanisms to protect them from desiccation- and rehydration-induced damage. This review explores how desiccation generates cell damage and how tolerant cells assuage the complex array of mechanical, structural, metabolic, and chemical stresses and survive.Likewise, the stress of rehydration requires appropriate mitigating cellular responses. We also explore what comparative genomics, both structural and responsive, have added to our understanding of cellular protection mechanisms induced by desiccation, and how vegetative desiccation tolerance circumvents destructive, stress-induced cell senescence.
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Affiliation(s)
- Melvin J Oliver
- Plant Genetics Research Unit, US Department of Agriculture, Agricultural Research Service, Columbia, Missouri 65211, USA
- Current affiliation: Division of Plant Sciences, Interdisciplinary Plant Group, University of Missouri, Columbia, Missouri 65211, USA;
| | - Jill M Farrant
- Department of Molecular and Cell Biology, University of Cape Town, Cape Town 7700, South Africa;
| | - Henk W M Hilhorst
- Laboratory of Plant Physiology, Wageningen University, 6706 PB Wageningen, The Netherlands;
| | - Sagadevan Mundree
- Centre for Tropical Crops and Biocommodities, Queensland University of Technology, Gardens Point Campus, Brisbane, 4001 Queensland, Australia; ,
| | - Brett Williams
- Centre for Tropical Crops and Biocommodities, Queensland University of Technology, Gardens Point Campus, Brisbane, 4001 Queensland, Australia; ,
| | - J Derek Bewley
- Department of Molecular and Cellular Biology, University of Guelph, Guelph, Ontario N1G 2W1, Canada;
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