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Kovacik M, Nowicka A, Zwyrtková J, Strejčková B, Vardanega I, Esteban E, Pasha A, Kaduchová K, Krautsova M, Červenková M, Šafář J, Provart NJ, Simon R, Pecinka A. The transcriptome landscape of developing barley seeds. THE PLANT CELL 2024; 36:2512-2530. [PMID: 38635902 PMCID: PMC11218782 DOI: 10.1093/plcell/koae095] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/18/2023] [Accepted: 03/05/2024] [Indexed: 04/20/2024]
Abstract
Cereal grains are an important source of food and feed. To provide comprehensive spatiotemporal information about biological processes in developing seeds of cultivated barley (Hordeum vulgare L. subsp. vulgare), we performed a transcriptomic study of the embryo, endosperm, and seed maternal tissues collected from grains 4-32 days after pollination. Weighted gene co-expression network and motif enrichment analyses identified specific groups of genes and transcription factors (TFs) potentially regulating barley seed tissue development. We defined a set of tissue-specific marker genes and families of TFs for functional studies of the pathways controlling barley grain development. Assessing selected groups of chromatin regulators revealed that epigenetic processes are highly dynamic and likely play a major role during barley endosperm development. The repressive H3K27me3 modification is globally reduced in endosperm tissues and at specific genes related to development and storage compounds. Altogether, this atlas uncovers the complexity of developmentally regulated gene expression in developing barley grains.
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Affiliation(s)
- Martin Kovacik
- Institute of Experimental Botany, Czech Acad Sci, Centre of Plant Structural and Functional Genomics, Šlechtitelů 31, 779 00 Olomouc, Czech Republic
- Department of Cell Biology and Genetics, Faculty of Science, Palacký University, Šlechtitelů 27, 779 00 Olomouc, Czech Republic
| | - Anna Nowicka
- Institute of Experimental Botany, Czech Acad Sci, Centre of Plant Structural and Functional Genomics, Šlechtitelů 31, 779 00 Olomouc, Czech Republic
- Franciszek Górski Institute of Plant Physiology Polish Academy of Sciences, Niezapominajek 21, 30 239 Kraków, Poland
| | - Jana Zwyrtková
- Institute of Experimental Botany, Czech Acad Sci, Centre of Plant Structural and Functional Genomics, Šlechtitelů 31, 779 00 Olomouc, Czech Republic
| | - Beáta Strejčková
- Institute of Experimental Botany, Czech Acad Sci, Centre of Plant Structural and Functional Genomics, Šlechtitelů 31, 779 00 Olomouc, Czech Republic
| | - Isaia Vardanega
- Institute for Developmental Genetics, Heinrich-Heine-University, Universitätsstraße 1, 40225 Düsseldorf, Germany
| | - Eddi Esteban
- Department of Cell and Systems Biology/Centre for the Analysis of Genome Evolution and Function, University of Toronto, 25 Willcocks St., Toronto, ON M5S 3B2, Canada
| | - Asher Pasha
- Department of Cell and Systems Biology/Centre for the Analysis of Genome Evolution and Function, University of Toronto, 25 Willcocks St., Toronto, ON M5S 3B2, Canada
| | - Kateřina Kaduchová
- Institute of Experimental Botany, Czech Acad Sci, Centre of Plant Structural and Functional Genomics, Šlechtitelů 31, 779 00 Olomouc, Czech Republic
| | - Maryna Krautsova
- Institute of Experimental Botany, Czech Acad Sci, Centre of Plant Structural and Functional Genomics, Šlechtitelů 31, 779 00 Olomouc, Czech Republic
| | - Marie Červenková
- Institute of Experimental Botany, Czech Acad Sci, Centre of Plant Structural and Functional Genomics, Šlechtitelů 31, 779 00 Olomouc, Czech Republic
| | - Jan Šafář
- Institute of Experimental Botany, Czech Acad Sci, Centre of Plant Structural and Functional Genomics, Šlechtitelů 31, 779 00 Olomouc, Czech Republic
| | - Nicholas J Provart
- Department of Cell and Systems Biology/Centre for the Analysis of Genome Evolution and Function, University of Toronto, 25 Willcocks St., Toronto, ON M5S 3B2, Canada
| | - Rüdiger Simon
- Institute for Developmental Genetics, Heinrich-Heine-University, Universitätsstraße 1, 40225 Düsseldorf, Germany
| | - Ales Pecinka
- Institute of Experimental Botany, Czech Acad Sci, Centre of Plant Structural and Functional Genomics, Šlechtitelů 31, 779 00 Olomouc, Czech Republic
- Department of Cell Biology and Genetics, Faculty of Science, Palacký University, Šlechtitelů 27, 779 00 Olomouc, Czech Republic
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2
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Zhang S, Ghatak A, Mohammadi Bazargani M, Kramml H, Zang F, Gao S, Ramšak Ž, Gruden K, Varshney RK, Jiang D, Chaturvedi P, Weckwerth W. Cell-type proteomic and metabolomic resolution of early and late grain filling stages of wheat endosperm. PLANT BIOTECHNOLOGY JOURNAL 2024; 22:555-571. [PMID: 38050335 DOI: 10.1111/pbi.14203] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2023] [Revised: 08/21/2023] [Accepted: 10/03/2023] [Indexed: 12/06/2023]
Abstract
The nutritional value of wheat grains, particularly their protein and metabolite composition, is a result of the grain-filling process, especially in the endosperm. Here, we employ laser microdissection (LMD) combined with shotgun proteomics and metabolomics to generate a cell type-specific proteome and metabolome inventory of developing wheat endosperm at the early (15 DAA) and late (26 DAA) grain-filling stages. We identified 1803 proteins and 41 metabolites from four different cell types (aleurone (AL), sub-aleurone (SA), starchy endosperm (SE) and endosperm transfer cells (ETCs). Differentially expressed proteins were detected, 67 in the AL, 31 in the SA, 27 in the SE and 50 in the ETCs between these two-time points. Cell-type accumulation of specific SUT and GLUT transporters, sucrose converting and starch biosynthesis enzymes correlate well with the respective sugar metabolites, suggesting sugar upload and starch accumulation via nucellar projection and ETC at 15 DAA in contrast to the later stage at 26 DAA. Changes in various protein levels between AL, SA and ETC support this metabolic switch from 15 to 26 DAA. The distinct spatial and temporal abundances of proteins and metabolites revealed a contrasting activity of nitrogen assimilation pathways, e.g. for GOGAT, GDH and glutamic acid, in the different cell types from 15 to 26 DAA, which can be correlated with specific protein accumulation in the endosperm. The integration of cell-type specific proteome and metabolome data revealed a complex metabolic interplay of the different cell types and a functional switch during grain development and grain-filling processes.
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Affiliation(s)
- Shuang Zhang
- Molecular Systems Biology Lab (MOSYS), Department of Functional and Evolutionary Ecology, University of Vienna, Vienna, Austria
- National Technique Innovation Center for Regional Wheat Production/Key Laboratory of Crop Ecophysiology, Ministry of Agriculture/Nanjing Agricultural University, Nanjing, China
| | - Arindam Ghatak
- Molecular Systems Biology Lab (MOSYS), Department of Functional and Evolutionary Ecology, University of Vienna, Vienna, Austria
- Vienna Metabolomics Center (VIME), University of Vienna, Vienna, Austria
| | | | - Hannes Kramml
- Molecular Systems Biology Lab (MOSYS), Department of Functional and Evolutionary Ecology, University of Vienna, Vienna, Austria
| | - Fujuan Zang
- National Technique Innovation Center for Regional Wheat Production/Key Laboratory of Crop Ecophysiology, Ministry of Agriculture/Nanjing Agricultural University, Nanjing, China
| | - Shuang Gao
- National Technique Innovation Center for Regional Wheat Production/Key Laboratory of Crop Ecophysiology, Ministry of Agriculture/Nanjing Agricultural University, Nanjing, China
| | - Živa Ramšak
- Department of Systems Biology and Biotechnology, National Institute of Biology, Ljubljana, Slovenia
| | - Kristina Gruden
- Department of Systems Biology and Biotechnology, National Institute of Biology, Ljubljana, Slovenia
| | - Rajeev K Varshney
- State Agricultural Biotechnology Centre, Centre for Crop and Food Innovation, Food Futures Institute, Murdoch University, Murdoch, WA, Australia
| | - Dong Jiang
- National Technique Innovation Center for Regional Wheat Production/Key Laboratory of Crop Ecophysiology, Ministry of Agriculture/Nanjing Agricultural University, Nanjing, China
| | - Palak Chaturvedi
- Molecular Systems Biology Lab (MOSYS), Department of Functional and Evolutionary Ecology, University of Vienna, Vienna, Austria
| | - Wolfram Weckwerth
- Molecular Systems Biology Lab (MOSYS), Department of Functional and Evolutionary Ecology, University of Vienna, Vienna, Austria
- Vienna Metabolomics Center (VIME), University of Vienna, Vienna, Austria
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3
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Afsharyan NP, Sannemann W, Ballvora A, Léon J. Identifying developmental QTL alleles with favorable effect on grain yield components under late-terminal drought in spring barley MAGIC population. PLANT DIRECT 2023; 7:e516. [PMID: 37538189 PMCID: PMC10394678 DOI: 10.1002/pld3.516] [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: 10/21/2022] [Revised: 05/27/2023] [Accepted: 06/28/2023] [Indexed: 08/05/2023]
Abstract
Barley is the fourth most cultivated cereal worldwide, and drought is a major cause of its yield loss by negatively affecting its development. Hence, better understanding developmental mechanisms that control complex polygenic yield-related traits under drought is essential to uncover favorable yield regulators. This study evaluated seven above-ground yield-related traits under well-watered (WW) and late-terminal drought (TD) treatment using 534 spring barley multiparent advanced generation intercross double haploid (DH) lines. The analysis of quantitative trait loci (QTL) for WW, TD, marker by treatment interaction, and drought stress tolerance identified 69, 64, 25, and 25 loci, respectively, for seven traits from which 15 loci were common for at least three traits and 17 were shared by TD and drought stress tolerance. Evaluation of allelic effects for a QTL revealed varying effect of parental alleles. Results showed prominent QTL located on major flowering time gene Ppd-H1 with favorable effects for grain weight under TD when flowering time was not significantly affected, suggesting that this gene might be linked with increasing grain weight by ways other than timing of flowering under late-terminal drought stress. Furthermore, a desirable novel QTL allele was identified on chromosome 5H for grain number under TD nearby sucrose transporter gene HvSUT2. The findings indicated that spring barley multiparent advanced generation intercross population can provide insights to improve yield under complex condition of drought.
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Affiliation(s)
- Nazanin P. Afsharyan
- Institute for Crop Science and Resource Conservation, Chair of Plant BreedingUniversity of BonnBonnGermany
- Department of Plant BreedingJustus Liebig University GiessenGiessenGermany
| | - Wiebke Sannemann
- Institute for Crop Science and Resource Conservation, Chair of Plant BreedingUniversity of BonnBonnGermany
- KWS Saat SE & Co. KGaAEinbeckGermany
| | - Agim Ballvora
- Institute for Crop Science and Resource Conservation, Chair of Plant BreedingUniversity of BonnBonnGermany
| | - Jens Léon
- Institute for Crop Science and Resource Conservation, Chair of Plant BreedingUniversity of BonnBonnGermany
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4
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Radchuk V, Belew ZM, Gündel A, Mayer S, Hilo A, Hensel G, Sharma R, Neumann K, Ortleb S, Wagner S, Muszynska A, Crocoll C, Xu D, Hoffie I, Kumlehn J, Fuchs J, Peleke FF, Szymanski JJ, Rolletschek H, Nour-Eldin HH, Borisjuk L. SWEET11b transports both sugar and cytokinin in developing barley grains. THE PLANT CELL 2023; 35:2186-2207. [PMID: 36857316 DOI: 10.1093/plcell/koad055] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/08/2022] [Revised: 01/17/2023] [Accepted: 02/17/2023] [Indexed: 05/30/2023]
Abstract
Even though Sugars Will Eventually be Exported Transporters (SWEETs) have been found in every sequenced plant genome, a comprehensive understanding of their functionality is lacking. In this study, we focused on the SWEET family of barley (Hordeum vulgare). A radiotracer assay revealed that expressing HvSWEET11b in African clawed frog (Xenopus laevis) oocytes facilitated the bidirectional transfer of not only just sucrose and glucose, but also cytokinin. Barley plants harboring a loss-of-function mutation of HvSWEET11b could not set viable grains, while the distribution of sucrose and cytokinin was altered in developing grains of plants in which the gene was knocked down. Sucrose allocation within transgenic grains was disrupted, which is consistent with the changes to the cytokinin gradient across grains, as visualized by magnetic resonance imaging and Fourier transform infrared spectroscopy microimaging. Decreasing HvSWEET11b expression in developing grains reduced overall grain size, sink strength, the number of endopolyploid endosperm cells, and the contents of starch and protein. The control exerted by HvSWEET11b over sugars and cytokinins likely predetermines their synergy, resulting in adjustments to the grain's biochemistry and transcriptome.
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Affiliation(s)
- Volodymyr Radchuk
- Leibniz-Institute of Plant Genetics and Crop Plant Research (IPK), Corrensstrasse 3, 06466 Gatersleben, Germany
| | - Zeinu M Belew
- Faculty of Science, Department of Plant and Environmental Sciences, DynaMo Center of Excellence, University of Copenhagen, Thorvaldsensvej 40, 1871 Frederiksberg C, Denmark
| | - Andre Gündel
- Leibniz-Institute of Plant Genetics and Crop Plant Research (IPK), Corrensstrasse 3, 06466 Gatersleben, Germany
| | - Simon Mayer
- Leibniz-Institute of Plant Genetics and Crop Plant Research (IPK), Corrensstrasse 3, 06466 Gatersleben, Germany
- Institute of Experimental Physics 5, University of Würzburg, Am Hubland, 97074 Würzburg, Germany
| | - Alexander Hilo
- Leibniz-Institute of Plant Genetics and Crop Plant Research (IPK), Corrensstrasse 3, 06466 Gatersleben, Germany
| | - Goetz Hensel
- Leibniz-Institute of Plant Genetics and Crop Plant Research (IPK), Corrensstrasse 3, 06466 Gatersleben, Germany
- Centre of Region Haná for Biotechnological and Agricultural Research, Czech Advanced Technology and Research Institute, Palacký University Olomouc, 78371 Olomouc, Czech Republic
| | - Rajiv Sharma
- Scotland's Rural College (SRUC), Kings Buildings, West Mains Road, Edinburgh, EH9 3JGUK
| | - Kerstin Neumann
- Leibniz-Institute of Plant Genetics and Crop Plant Research (IPK), Corrensstrasse 3, 06466 Gatersleben, Germany
| | - Stefan Ortleb
- Leibniz-Institute of Plant Genetics and Crop Plant Research (IPK), Corrensstrasse 3, 06466 Gatersleben, Germany
| | - Steffen Wagner
- Leibniz-Institute of Plant Genetics and Crop Plant Research (IPK), Corrensstrasse 3, 06466 Gatersleben, Germany
| | - Aleksandra Muszynska
- Leibniz-Institute of Plant Genetics and Crop Plant Research (IPK), Corrensstrasse 3, 06466 Gatersleben, Germany
| | - Christoph Crocoll
- Faculty of Science, Department of Plant and Environmental Sciences, DynaMo Center of Excellence, University of Copenhagen, Thorvaldsensvej 40, 1871 Frederiksberg C, Denmark
| | - Deyang Xu
- Faculty of Science, Department of Plant and Environmental Sciences, DynaMo Center of Excellence, University of Copenhagen, Thorvaldsensvej 40, 1871 Frederiksberg C, Denmark
| | - Iris Hoffie
- Leibniz-Institute of Plant Genetics and Crop Plant Research (IPK), Corrensstrasse 3, 06466 Gatersleben, Germany
| | - Jochen Kumlehn
- Leibniz-Institute of Plant Genetics and Crop Plant Research (IPK), Corrensstrasse 3, 06466 Gatersleben, Germany
| | - Joerg Fuchs
- Leibniz-Institute of Plant Genetics and Crop Plant Research (IPK), Corrensstrasse 3, 06466 Gatersleben, Germany
| | - Fritz F Peleke
- Leibniz-Institute of Plant Genetics and Crop Plant Research (IPK), Corrensstrasse 3, 06466 Gatersleben, Germany
| | - Jedrzej J Szymanski
- Leibniz-Institute of Plant Genetics and Crop Plant Research (IPK), Corrensstrasse 3, 06466 Gatersleben, Germany
- IBG-4 Bioinformatics, Forschungszentrum Jülich, 52428 Jülich, Germany
| | - Hardy Rolletschek
- Leibniz-Institute of Plant Genetics and Crop Plant Research (IPK), Corrensstrasse 3, 06466 Gatersleben, Germany
| | - Hussam H Nour-Eldin
- Faculty of Science, Department of Plant and Environmental Sciences, DynaMo Center of Excellence, University of Copenhagen, Thorvaldsensvej 40, 1871 Frederiksberg C, Denmark
| | - Ljudmilla Borisjuk
- Leibniz-Institute of Plant Genetics and Crop Plant Research (IPK), Corrensstrasse 3, 06466 Gatersleben, Germany
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5
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Matsushima R, Hisano H, Galis I, Miura S, Crofts N, Takenaka Y, Oitome NF, Ishimizu T, Fujita N, Sato K. FLOURY ENDOSPERM 6 mutations enhance the sugary phenotype caused by the loss of ISOAMYLASE1 in barley. TAG. THEORETICAL AND APPLIED GENETICS. THEORETISCHE UND ANGEWANDTE GENETIK 2023; 136:94. [PMID: 37010621 PMCID: PMC10070237 DOI: 10.1007/s00122-023-04339-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/06/2022] [Accepted: 03/02/2023] [Indexed: 06/19/2023]
Abstract
Barley double mutants in two genes involved in starch granule morphology, HvFLO6 and HvISA1, had impaired starch accumulation and higher grain sugar levels than either single mutant. Starch is a biologically and commercially important glucose polymer synthesized by plants as semicrystalline starch granules (SGs). Because SG morphology affects starch properties, mutants with altered SG morphology may be useful in breeding crops with desirable starch properties, including potentially novel properties. In this study, we employed a simple screen for mutants with altered SG morphology in barley (Hordeum vulgare). We isolated mutants that formed compound SGs together with the normal simple SGs in the endosperm and found that they were allelic mutants of the starch biosynthesis genes ISOAMYLASE1 (HvISA1) and FLOURY ENDOSPERM 6 (HvFLO6), encoding starch debranching enzyme and CARBOHYDRATE-BINDING MODULE 48-containing protein, respectively. We generated the hvflo6 hvisa1 double mutant and showed that it had significantly reduced starch biosynthesis and developed shrunken grains. In contrast to starch, soluble α-glucan, phytoglycogen, and sugars accumulated to higher levels in the double mutant than in the single mutants. In addition, the double mutants showed defects in SG morphology in the endosperm and in the pollen. This novel genetic interaction suggests that hvflo6 acts as an enhancer of the sugary phenotype caused by hvisa1 mutation.
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Affiliation(s)
- Ryo Matsushima
- Institute of Plant Science and Resources, Okayama University, 2-20-1 Chuo, Kurashiki, Okayama, 710-0046, Japan.
| | - Hiroshi Hisano
- Institute of Plant Science and Resources, Okayama University, 2-20-1 Chuo, Kurashiki, Okayama, 710-0046, Japan
| | - Ivan Galis
- Institute of Plant Science and Resources, Okayama University, 2-20-1 Chuo, Kurashiki, Okayama, 710-0046, Japan
| | - Satoko Miura
- Department of Biological Production, Akita Prefectural University, Akita, 010-0195, Japan
| | - Naoko Crofts
- Department of Biological Production, Akita Prefectural University, Akita, 010-0195, Japan
| | - Yuto Takenaka
- College of Life Sciences, Ritsumeikan University, Kusatsu, Shiga, 525-8577, Japan
| | - Naoko F Oitome
- Department of Biological Production, Akita Prefectural University, Akita, 010-0195, Japan
| | - Takeshi Ishimizu
- College of Life Sciences, Ritsumeikan University, Kusatsu, Shiga, 525-8577, Japan
| | - Naoko Fujita
- Department of Biological Production, Akita Prefectural University, Akita, 010-0195, Japan
| | - Kazuhiro Sato
- Institute of Plant Science and Resources, Okayama University, 2-20-1 Chuo, Kurashiki, Okayama, 710-0046, Japan
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6
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Niu L, Liu L, Zhang J, Scali M, Wang W, Hu X, Wu X. Genetic Engineering of Starch Biosynthesis in Maize Seeds for Efficient Enzymatic Digestion of Starch during Bioethanol Production. Int J Mol Sci 2023; 24:ijms24043927. [PMID: 36835340 PMCID: PMC9967003 DOI: 10.3390/ijms24043927] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Revised: 01/20/2023] [Accepted: 02/14/2023] [Indexed: 02/17/2023] Open
Abstract
Maize accumulates large amounts of starch in seeds which have been used as food for human and animals. Maize starch is an importantly industrial raw material for bioethanol production. One critical step in bioethanol production is degrading starch to oligosaccharides and glucose by α-amylase and glucoamylase. This step usually requires high temperature and additional equipment, leading to an increased production cost. Currently, there remains a lack of specially designed maize cultivars with optimized starch (amylose and amylopectin) compositions for bioethanol production. We discussed the features of starch granules suitable for efficient enzymatic digestion. Thus far, great advances have been made in molecular characterization of the key proteins involved in starch metabolism in maize seeds. The review explores how these proteins affect starch metabolism pathway, especially in controlling the composition, size and features of starch. We highlight the roles of key enzymes in controlling amylose/amylopectin ratio and granules architecture. Based on current technological process of bioethanol production using maize starch, we propose that several key enzymes can be modified in abundance or activities via genetic engineering to synthesize easily degraded starch granules in maize seeds. The review provides a clue for developing special maize cultivars as raw material in the bioethanol industry.
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Affiliation(s)
- Liangjie Niu
- National Key Laboratory of Wheat and Maize Crop Science, Henan Agricultural University, Zhengzhou 450002, China
- College of Life Sciences, Henan Agricultural University, Zhengzhou 450002, China
| | - Liangwei Liu
- College of Life Sciences, Henan Agricultural University, Zhengzhou 450002, China
- Key Laboratory of Enzyme Engineering of Agricultural Microbiology, Ministry of Agriculture and Rural Affairs, Henan Agricultural University, Zhengzhou 450002, China
| | - Jinghua Zhang
- National Key Laboratory of Wheat and Maize Crop Science, Henan Agricultural University, Zhengzhou 450002, China
- College of Life Sciences, Henan Agricultural University, Zhengzhou 450002, China
| | - Monica Scali
- Department of Life Sciences, University of Siena, 53100 Siena, Italy
| | - Wei Wang
- National Key Laboratory of Wheat and Maize Crop Science, Henan Agricultural University, Zhengzhou 450002, China
- College of Life Sciences, Henan Agricultural University, Zhengzhou 450002, China
- Correspondence:
| | - Xiuli Hu
- National Key Laboratory of Wheat and Maize Crop Science, Henan Agricultural University, Zhengzhou 450002, China
- College of Life Sciences, Henan Agricultural University, Zhengzhou 450002, China
| | - Xiaolin Wu
- National Key Laboratory of Wheat and Maize Crop Science, Henan Agricultural University, Zhengzhou 450002, China
- College of Life Sciences, Henan Agricultural University, Zhengzhou 450002, China
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7
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Hu S, Qin Q, Liu J, Yin H, Meng Q, Yu J, Huang S, Ma Z. The Correlations of Barley Vitality and Storage Reserve Mobilization during Early Germination. JOURNAL OF THE AMERICAN SOCIETY OF BREWING CHEMISTS 2023. [DOI: 10.1080/03610470.2022.2161270] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Shumin Hu
- State Key Laboratory of Biological Fermentation Engineering of Beer, Tsingtao Brewery Co. Ltd, Qingdao, Shandong, China
| | - Qingqing Qin
- State Key Laboratory of Biological Fermentation Engineering of Beer, Tsingtao Brewery Co. Ltd, Qingdao, Shandong, China
| | - Jia Liu
- State Key Laboratory of Biological Fermentation Engineering of Beer, Tsingtao Brewery Co. Ltd, Qingdao, Shandong, China
| | - Hua Yin
- State Key Laboratory of Biological Fermentation Engineering of Beer, Tsingtao Brewery Co. Ltd, Qingdao, Shandong, China
| | - Qingshang Meng
- State Key Laboratory of Biological Fermentation Engineering of Beer, Tsingtao Brewery Co. Ltd, Qingdao, Shandong, China
| | - Junhong Yu
- State Key Laboratory of Biological Fermentation Engineering of Beer, Tsingtao Brewery Co. Ltd, Qingdao, Shandong, China
| | - Shuxia Huang
- State Key Laboratory of Biological Fermentation Engineering of Beer, Tsingtao Brewery Co. Ltd, Qingdao, Shandong, China
| | - Zengxin Ma
- State Key Laboratory of Biological Fermentation Engineering of Beer, Tsingtao Brewery Co. Ltd, Qingdao, Shandong, China
- School of Life Sciences, Shandong Province Key Laboratory of Applied Mycology and Qingdao International Center on Microbes Utilizing Biogas, Qingdao Agricultural University, Qingdao, Shandong, China
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8
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Liang G, Hou Y, Wang H, Wang P, Mao J, Chen B. VaBAM1 weakens cold tolerance by interacting with the negative regulator VaSR1 to suppress β-amylase expression. Int J Biol Macromol 2023; 225:1394-1404. [PMID: 36436609 DOI: 10.1016/j.ijbiomac.2022.11.197] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2022] [Revised: 11/18/2022] [Accepted: 11/20/2022] [Indexed: 11/27/2022]
Abstract
Cold stress is a key climatic factor that limits grape productivity and quality. Although β-amylase (BAM) is known to play an important role as a mediator of starch degradation under conditions of cold stress, the mechanism by which BAM regulates cold tolerance in grape remains unclear. Here, we identified VaBAM1 from Vitis amurensis and characterized its interactive regulating mechanism under cold stress in Arabidopsis thaliana and grape. VaBAM1-overexpressing A. thaliana plants (OEs) exhibited high freezing tolerance. Soluble sugar content and amylase activity were increased in OEs and VaBAM1-overexpressing grape calli (VaBAM1-OEs) under cold stress; however, they were decreased in grape calli in which VaBAM1 was edited using CRISPR/Cas9. The results of yeast two-hybrid, bimolecular fluorescence complementation, and pull-down experiments showed that serine/arginine-rich splicing factor 1 (VaSR1) interacted with VaBAM1. Furthermore, the expression of VaSR1 was opposite that of VaBAM1 in phloem tissue of Vitis amurensis during winter dormancy. In VaSR1-overexpressing grape calli (VaSR1-OEs), BAM activity and the expression levels of C-repeat binding transcription factor and cold response genes were all significantly lower than that in untransformed calli subjected to cold stress. Moreover, VvBAM1 was downregulated in VaSR1-OEs under cold stress. Overall, we identified that VaSR1 interacts with VaBAM1, negatively regulating BAM activity and resulting in decreased plant cold tolerance.
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Affiliation(s)
- Guoping Liang
- College of Horticulture, Gansu Agricultural University, Lanzhou 730070, China
| | - Yingjun Hou
- College of Horticulture, Gansu Agricultural University, Lanzhou 730070, China
| | - Han Wang
- College of Horticulture, Gansu Agricultural University, Lanzhou 730070, China
| | - Ping Wang
- College of Horticulture, Gansu Agricultural University, Lanzhou 730070, China
| | - Juan Mao
- College of Horticulture, Gansu Agricultural University, Lanzhou 730070, China; State Key Laboratory of Aridland Crop Science, Gansu Agricultural University, Lanzhou 730070, China.
| | - Baihong Chen
- College of Horticulture, Gansu Agricultural University, Lanzhou 730070, China; State Key Laboratory of Aridland Crop Science, Gansu Agricultural University, Lanzhou 730070, China.
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9
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Xiao Q, Huang T, Cao W, Ma K, Liu T, Xing F, Ma Q, Duan H, Ling M, Ni X, Liu Z. Profiling of transcriptional regulators associated with starch biosynthesis in sorghum ( Sorghum bicolor L.). FRONTIERS IN PLANT SCIENCE 2022; 13:999747. [PMID: 36110358 PMCID: PMC9468648 DOI: 10.3389/fpls.2022.999747] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/21/2022] [Accepted: 08/08/2022] [Indexed: 06/15/2023]
Abstract
Starch presents as the major component of grain endosperm of sorghum (Sorghum bicolor L.) and other cereals, serving as the main energy supplier for both plants and animals, as well as important industrial raw materials of human beings, and was intensively concerned world widely. However, few documents focused on the pathway and transcriptional regulations of starch biosynthesis in sorghum. Here we presented the RNA-sequencing profiles of 20 sorghum tissues at different developmental stages to dissect key genes associated with sorghum starch biosynthesis and potential transcriptional regulations. A total of 1,708 highly expressed genes were detected, namely, 416 in grains, 736 in inflorescence, 73 in the stalk, 215 in the root, and 268 genes in the leaf. Besides, 27 genes encoded key enzymes associated with starch biosynthesis in sorghum were identified, namely, six for ADP-glucose pyrophosphorylase (AGPase), 10 for starch synthases (SSs), four for both starch-branching enzymes (SBE) and starch-debranching enzymes (DBEs), two for starch phosphorylases (SPs), and one for Brittle-1 (BT1). In addition, 65 transcription factors (TFs) that are highly expressed in endosperm were detected to co-express with 16 out of 27 genes, and 90 cis-elements were possessed by all 27 identified genes. Four NAC TFs were cloned, and the further assay results showed that three of them could in vitro bind to the CACGCAA motif within the promoters of SbBt1 and SbGBSSI, two key genes associated with starch biosynthesis in sorghum, functioning in similar ways that reported in other cereals. These results confirmed that sorghum starch biosynthesis might share the same or similar transcriptional regulations documented in other cereals, and provided informative references for further regulatory mechanism dissection of TFs involved in starch biosynthesis in sorghum.
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Affiliation(s)
- Qianlin Xiao
- College of Agronomy and Biotechnology, Southwest University, Chongqing, China
| | - Tianhui Huang
- College of Agronomy and Biotechnology, Southwest University, Chongqing, China
| | - Wan Cao
- College of Agronomy and Biotechnology, Southwest University, Chongqing, China
| | - Kuang Ma
- College of Agronomy and Biotechnology, Southwest University, Chongqing, China
| | - Tingting Liu
- College of Agronomy and Biotechnology, Southwest University, Chongqing, China
| | - Fangyu Xing
- College of Agronomy and Biotechnology, Southwest University, Chongqing, China
| | - Qiannan Ma
- College of Agronomy and Biotechnology, Southwest University, Chongqing, China
| | - Hong Duan
- College of Agronomy and Biotechnology, Southwest University, Chongqing, China
| | - Min Ling
- College of Agronomy and Biotechnology, Southwest University, Chongqing, China
| | - Xianlin Ni
- Rice and Sorghum Research Institute, Sichuan Academy of Agricultural Sciences, Deyang, China
- Sichuan Sub Center, National Sorghum Improvement Center, Luzhou, China
| | - Zhizhai Liu
- College of Agronomy and Biotechnology, Southwest University, Chongqing, China
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10
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Vinje MA, Walling JG, Henson CA, Duke SH. Temporal Expression Analysis of Barley Disproportionating Enzyme 1 ( DPE1) during Grain Development and Malting. JOURNAL OF THE AMERICAN SOCIETY OF BREWING CHEMISTS 2022. [DOI: 10.1080/03610470.2022.2104060] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
Affiliation(s)
- Marcus A. Vinje
- Cereal Crops Research Unit, USDA, Agricultural Research Service, Madison, WI, U.S.A
| | - Jason G. Walling
- Cereal Crops Research Unit, USDA, Agricultural Research Service, Madison, WI, U.S.A
| | - Cynthia A. Henson
- Cereal Crops Research Unit, USDA, Agricultural Research Service, Madison, WI, U.S.A
- Department of Agronomy, University of Wisconsin- Madison, Madison, WI, U.S.A
| | - Stanley H. Duke
- Department of Agronomy, University of Wisconsin- Madison, Madison, WI, U.S.A
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11
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Sharma V, Fandade V, Kumar P, Parveen A, Madhawan A, Bathla M, Mishra A, Sharma H, Rishi V, Satbhai SB, Roy J. Protein targeting to starch 1, a functional protein of starch biosynthesis in wheat (Triticum aestivum L.). PLANT MOLECULAR BIOLOGY 2022; 109:101-113. [PMID: 35332427 DOI: 10.1007/s11103-022-01260-1] [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: 10/27/2021] [Accepted: 03/02/2022] [Indexed: 06/14/2023]
Abstract
TaPTST1, a wheat homolog of AtPTST1 containing CBM can interact with GBSSI and regulate starch metabolism in wheat endosperm. In cereal endosperm, native starch comprising amylose and amylopectin is synthesized by the coordinated activities of several pathway enzymes. Amylose in starch influences its physio-chemical properties resulting in several human health benefits. The Granule-Bound Starch Synthase I (GBSSI) is the most abundant starch-associated protein. GBSSI lacks dedicated Carbohydrate-binding module (CBM). Previously, Protein Targeting To Starch 1 (PTST1) was identified as a crucial protein for the localization of GBSSI to the starch granules in Arabidopsis. The function of its homologous protein in the wheat endosperm is not known. In this study, TaPTST1, an AtPTST1 homolog, containing a CBM and a coiled-coil domain was identified in wheat. Protein-coding nucleotide sequence of TaPTST1 from Indian wheat variety 'C 306' was cloned and characterized. Homology modelling and molecular docking suggested the potential interaction of TaPTST1 with glucans and GBSSI. The TaPTST1 expression was higher in wheat grain than the other tissues, suggesting a grain-specific function. In vitro binding assays demonstrated different binding affinities of TaPTST1 for native starch, amylose, and amylopectin. Furthermore, the immunoaffinity pull-down assay revealed that TaPTST1 directly interacts with GBSSI, and the interaction is mediated by a coiled-coil domain. The direct protein-protein interaction was further confirmed by bimolecular fluorescence complementation assay (BiFC) in planta. Based on our findings we postulate a functional role for TaPTST1 in starch metabolism by targeting GBSSI to starch granules in wheat endosperm.
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Affiliation(s)
- Vinita Sharma
- National Agri-Food Biotechnology Institute (NABI), Sector-81, SAS Nagar, Mohali, Punjab, 140 306, India
- Department of Biological Sciences, Indian Institute of Science Education & Research (IISER) Mohali, Sector-81, SAS Nagar, Mohali, Punjab, 140 306, India
| | - Vikas Fandade
- National Agri-Food Biotechnology Institute (NABI), Sector-81, SAS Nagar, Mohali, Punjab, 140 306, India
| | - Prashant Kumar
- National Agri-Food Biotechnology Institute (NABI), Sector-81, SAS Nagar, Mohali, Punjab, 140 306, India
| | - Afsana Parveen
- National Agri-Food Biotechnology Institute (NABI), Sector-81, SAS Nagar, Mohali, Punjab, 140 306, India
| | - Akansha Madhawan
- National Agri-Food Biotechnology Institute (NABI), Sector-81, SAS Nagar, Mohali, Punjab, 140 306, India
| | - Manik Bathla
- National Agri-Food Biotechnology Institute (NABI), Sector-81, SAS Nagar, Mohali, Punjab, 140 306, India
| | - Ankita Mishra
- National Agri-Food Biotechnology Institute (NABI), Sector-81, SAS Nagar, Mohali, Punjab, 140 306, India
| | - Himanshu Sharma
- National Agri-Food Biotechnology Institute (NABI), Sector-81, SAS Nagar, Mohali, Punjab, 140 306, India
| | - Vikas Rishi
- National Agri-Food Biotechnology Institute (NABI), Sector-81, SAS Nagar, Mohali, Punjab, 140 306, India
| | - Santosh B Satbhai
- Department of Biological Sciences, Indian Institute of Science Education & Research (IISER) Mohali, Sector-81, SAS Nagar, Mohali, Punjab, 140 306, India
| | - Joy Roy
- National Agri-Food Biotechnology Institute (NABI), Sector-81, SAS Nagar, Mohali, Punjab, 140 306, India.
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Crofts N, Domon A, Miura S, Hosaka Y, Oitome NF, Itoh A, Noge K, Fujita N. Starch synthases SSIIa and GBSSI control starch structure but do not determine starch granule morphology in the absence of SSIIIa and SSIVb. PLANT MOLECULAR BIOLOGY 2022; 108:379-398. [PMID: 34671919 DOI: 10.1007/s11103-021-01197-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Accepted: 09/20/2021] [Indexed: 05/21/2023]
Abstract
High levels of two major starch synthases, SSIIa and GBSSI, in ss3a ss4b double mutant rice alter the starch structure but fail to recover the polygonal starch granule morphology. The endosperm starch granule is polygonal in wild-type rice but spherical in double mutant japonica rice lacking genes encoding two of the five major Starch synthase (SS) isozymes expressed in endosperm, SSIIIa and SSIVb. Japonica rice naturally has low levels of SSIIa and Granule-bound SSI (GBSSI). Therefore, introduction of active SSIIa allele and/or high-expressing GBSSI allele from indica rice into the japonica rice mutant lacking SS isozymes can help elucidate the compensatory roles of SS isozymes in starch biosynthesis. In this study, we crossed the ss3a ss4a double mutant japonica rice with the indica rice to generate three new rice lines with high and/or low SSIIa and GBSSI levels, and examined their starch structure, physicochemical properties, and levels of other starch biosynthetic enzymes. Lines with high SSIIa levels showed more SSI and SSIIa bound to starch granule, reduced levels of short amylopectin chains (7 ≤ DP ≤ 12), increased levels of amylopectin chains with DP > 13, and consequently higher gelatinization temperature. Lines with high GBSSI levels showed an increase in amylose content. The ADP-glucose content of the crude extract was high in lines with low or high SSIIa and low GBSSI levels, but was low in lines with high GBSSI. Addition of high SSIIa and GBSSI altered the starch structure and physicochemical properties but did not affect the starch granule morphology, confirming that SSIIIa and SSIVb are key enzymes affecting starch granule morphology in rice. The relationship among SS isozymes and its effect on the amount of substrate (ADP-glucose) is discussed.
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Affiliation(s)
- Naoko Crofts
- Department of Biological Production, Akita Prefectural University, Akita, Japan
| | - Asaka Domon
- Department of Biological Production, Akita Prefectural University, Akita, Japan
| | - Satoko Miura
- Department of Biological Production, Akita Prefectural University, Akita, Japan
| | - Yuko Hosaka
- Department of Biological Production, Akita Prefectural University, Akita, Japan
| | - Naoko F Oitome
- Department of Biological Production, Akita Prefectural University, Akita, Japan
| | - Ayaka Itoh
- Department of Biological Production, Akita Prefectural University, Akita, Japan
| | - Koji Noge
- Department of Biological Production, Akita Prefectural University, Akita, Japan
| | - Naoko Fujita
- Department of Biological Production, Akita Prefectural University, Akita, Japan.
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13
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Zhang Q, Pritchard J, Mieog J, Byrne K, Colgrave ML, Wang JR, Ral JPF. Over-Expression of a Wheat Late Maturity Alpha-Amylase Type 1 Impact on Starch Properties During Grain Development and Germination. FRONTIERS IN PLANT SCIENCE 2022; 13:811728. [PMID: 35422830 PMCID: PMC9002352 DOI: 10.3389/fpls.2022.811728] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Accepted: 02/04/2022] [Indexed: 05/14/2023]
Abstract
The hydrolysis of starch is a complex process that requires synergistic action of multiple hydrolytic enzymes, including α-amylases. Wheat over-expression of TaAmy1, driven by seed specific promoter, resulted in a 20- to 230-fold total α-amylase activity in mature grains. Ectopic expression of TaAmy1 showed a significant elevated α-amylase activity in stem and leaf without consequences on transitory starch. In mature grain, overexpressed TaAMY1 was mainly located in the endosperm with high expression of TaAmy1. This is due to early developing grains having effect on starch granules from 18 days post-anthesis (DPA) and on soluble sugar accumulation from 30 DPA. While accumulation of TaAMY1 led to a high degree of damaged starch in grain, the dramatic alterations of starch visco-properties caused by the elevated levels of α-amylase essentially occurred during processing, thus suggesting a very small impact of related starch damage on grain properties. Abnormal accumulation of soluble sugar (α-gluco-oligosaccharide and sucrose) by TaAMY1 over-expression reduced the grain dormancy and enhanced abscisic acid (ABA) resistance. Germination study in the presence of α-amylase inhibitor suggested a very limited role of TaAMY1 in the early germination process and starch conversion into soluble sugars.
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Affiliation(s)
- Qin Zhang
- Agriculture and Food, Commonwealth Scientific and Industrial Research Organisation (CSIRO), Canberra, ACT, Australia
- Triticeae Research Institute, Sichuan Agricultural University, Chengdu, China
| | - Jenifer Pritchard
- Agriculture and Food, Commonwealth Scientific and Industrial Research Organisation (CSIRO), Canberra, ACT, Australia
| | - Jos Mieog
- Agriculture and Food, Commonwealth Scientific and Industrial Research Organisation (CSIRO), Canberra, ACT, Australia
- Southern Cross Plant Science, Southern Cross University, Lismore, NSW, Australia
| | - Keren Byrne
- Agriculture and Food, Commonwealth Scientific and Industrial Research Organisation (CSIRO), Canberra, ACT, Australia
- Agriculture and Food, Commonwealth Scientific and Industrial Research Organisation (CSIRO), St Lucia, QLD, Australia
| | - Michelle L. Colgrave
- Agriculture and Food, Commonwealth Scientific and Industrial Research Organisation (CSIRO), Canberra, ACT, Australia
- Agriculture and Food, Commonwealth Scientific and Industrial Research Organisation (CSIRO), St Lucia, QLD, Australia
| | - Ji-Rui Wang
- Triticeae Research Institute, Sichuan Agricultural University, Chengdu, China
| | - Jean-Philippe F. Ral
- Agriculture and Food, Commonwealth Scientific and Industrial Research Organisation (CSIRO), Canberra, ACT, Australia
- *Correspondence: Jean-Philippe F. Ral,
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14
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Mukherjee S, Koramutla MK, Levin DB, Ayele BT. Genetic variation in transcriptional regulation of wheat seed starch content and its conversion to bioethanol. Food Energy Secur 2021. [DOI: 10.1002/fes3.339] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- Shalini Mukherjee
- Department of Plant Science University of Manitoba Winnipeg Manitoba Canada
| | | | - David B. Levin
- Department of Biosystems Engineering University of Manitoba Winnipeg Manitoba Canada
| | - Belay T. Ayele
- Department of Plant Science University of Manitoba Winnipeg Manitoba Canada
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15
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Chaban IA, Gulevich AA, Smirnova EA, Baranova EN. Morphological and Ultrastructural Features of Formation of the Skin of Wheat ( Triticum aestivum L.) Kernel. PLANTS (BASEL, SWITZERLAND) 2021; 10:plants10112538. [PMID: 34834901 PMCID: PMC8624426 DOI: 10.3390/plants10112538] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/16/2021] [Revised: 11/15/2021] [Accepted: 11/16/2021] [Indexed: 05/14/2023]
Abstract
The integumentary tissues of plant seeds protect the embryo (new sporophyte) forming in them from unfavorable external conditions; therefore, comprehensive knowledge about the structural and functional specificity of seed covers in various plants may be of both theoretical and practical interest. As a result of our study, additional data were obtained on the morphological and ultrastructural features of the formation of a multilayer skin of wheat (Triticum aestivum L.) kernel (caryopsis). The ultrastructure research analysis showed that differentiation of the pericarp and inner integument of the ovule leads to the formation of functionally different layers of the skin of mature wheat grain. Thus, the differentiation of exocarp and endocarp cells is accompanied by a significant thickening of the cell walls, which reliably protect the ovule from adverse external conditions. The cells of the two-layer inner integument of the ovule differentiate into cuticular and phenolic layers, which are critical for protecting daughter tissues from various pathogens. The epidermis of the nucellus turns into a layer of mucilage, which apparently helps to maintain the water balance of the seed. Morphological and ultrastructural data showed that the formation of the kernel's skin occurs in coordination with the development of the embryo and endosperm up to the full maturity of the kernel. This is evidenced by the structure of the cytoplasm and nucleus, characteristic of metabolically active protoplasts of cells, which is observed in most integumentary layers at the late stages of maturation. This activity can also be confirmed by a significant increase in the thickness of the cell walls in the cells of two layers of the exocarp and in cross cells in comparison with the earlier stages. Based on these results, we came to the conclusion that the cells of a majority in the covering tissues of the wheat kernel during its ontogenesis are transformed into specialized layers of the skin by terminal differentiation.
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Affiliation(s)
- Inna A. Chaban
- Plant Cell Biology Laboratory, All-Russia Research Institute of Agricultural Biotechnology, Timiryzevskaya 42, 127550 Moscow, Russia;
- Correspondence: (I.A.C.); (E.N.B.); Tel.: +7-(903)-6245971 (E.N.B.)
| | - Alexander A. Gulevich
- Plant Cell Engineering Laboratory, All-Russia Research Institute of Agricultural Biotechnology, Timiryazevskaya 42, 127550 Moscow, Russia;
| | - Elena A. Smirnova
- Plant Cell Biology Laboratory, All-Russia Research Institute of Agricultural Biotechnology, Timiryzevskaya 42, 127550 Moscow, Russia;
- Biology Faculty, Lomonosov Moscow State University, Leninskie Gory 1, Building 12, 119991 Moscow, Russia
| | - Ekaterina N. Baranova
- Plant Cell Biology Laboratory, All-Russia Research Institute of Agricultural Biotechnology, Timiryzevskaya 42, 127550 Moscow, Russia;
- Plant Protection Laboratory, N.V. Tsitsin Main Botanical Garden of Russian Academy of Sciences, 127276 Moscow, Russia
- Correspondence: (I.A.C.); (E.N.B.); Tel.: +7-(903)-6245971 (E.N.B.)
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16
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Zhang Q, Pritchard J, Mieog J, Byrne K, Colgrave ML, Wang J, Ral JF. Overexpression of a wheat α-amylase type 2 impact on starch metabolism and abscisic acid sensitivity during grain germination. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2021; 108:378-393. [PMID: 34312931 PMCID: PMC9290991 DOI: 10.1111/tpj.15444] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/16/2020] [Revised: 07/16/2021] [Accepted: 07/20/2021] [Indexed: 05/27/2023]
Abstract
Despite being of vital importance for seed establishment and grain quality, starch degradation remains poorly understood in organs such as cereal or legume seeds. In cereals, starch degradation requires the synergetic action of different isoforms of α-amylases. Ubiquitous overexpression of TaAmy2 resulted in a 2.0-437.6-fold increase of total α-amylase activity in developing leaf and harvested grains. These increases led to dramatic alterations of starch visco-properties and augmentation of soluble carbohydrate levels (mainly sucrose and α-gluco-oligosaccharide) in grain. Interestingly, the overexpression of TaAMY2 led to an absence of dormancy in ripened grain due to abscisic acid (ABA) insensitivity. Using an allosteric α-amylase inhibitor (acarbose), we demonstrated that ABA insensitivity was due to the increased soluble carbohydrate generated by the α-amylase excess. Independent from the TaAMY2 overexpression, inhibition of α-amylase during germination led to the accumulation of soluble α-gluco-oligosaccharides without affecting the first stage of germination. These findings support the hypotheses that (i) endosperm sugar may overcome ABA signalling and promote sprouting, and (ii) α-amylase may not be required for the initial stage of grain germination, an observation that questions the function of the amylolytic enzyme in the starch degradation process during germination.
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Affiliation(s)
- Qin Zhang
- Agriculture and foodCSIRO Agriculture and FoodCanberraACT2601Australia
- Triticeae Research InstituteSichuan Agricultural UniversityChengduSichuan611130China
| | - Jenifer Pritchard
- Agriculture and foodCSIRO Agriculture and FoodCanberraACT2601Australia
| | - Jos Mieog
- Agriculture and foodCSIRO Agriculture and FoodCanberraACT2601Australia
- Present address:
Plant ScienceSouthern Cross UniversityLismoreACTAustralia
| | - Keren Byrne
- Agriculture and foodCSIRO Agriculture and FoodCanberraACT2601Australia
- CSIRO Agriculture and FoodSt. LuciaQLD4067Australia
| | - Michelle L. Colgrave
- Agriculture and foodCSIRO Agriculture and FoodCanberraACT2601Australia
- CSIRO Agriculture and FoodSt. LuciaQLD4067Australia
| | - Ji‐Rui Wang
- Triticeae Research InstituteSichuan Agricultural UniversityChengduSichuan611130China
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17
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Huang L, Tan H, Zhang C, Li Q, Liu Q. Starch biosynthesis in cereal endosperms: An updated review over the last decade. PLANT COMMUNICATIONS 2021; 2:100237. [PMID: 34746765 PMCID: PMC8554040 DOI: 10.1016/j.xplc.2021.100237] [Citation(s) in RCA: 89] [Impact Index Per Article: 29.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/05/2021] [Revised: 08/08/2021] [Accepted: 08/27/2021] [Indexed: 05/13/2023]
Abstract
Starch is a vital energy source for living organisms and is a key raw material and additive in the food and non-food industries. Starch has received continuous attention in multiple research fields. The endosperm of cereals (e.g., rice, corn, wheat, and barley) is the most important site for the synthesis of storage starch. Around 2010, several excellent reviews summarized key progress in various fields of starch research, serving as important references for subsequent research. In the past 10 years, many achievements have been made in the study of starch synthesis and regulation in cereals. The present review provides an update on research progress in starch synthesis of cereal endosperms over the past decade, focusing on new enzymes and non-enzymatic proteins involved in starch synthesis, regulatory networks of starch synthesis, and the use of elite alleles of starch synthesis-related genes in cereal breeding programs. We also provide perspectives on future research directions that will further our understanding of cereal starch biosynthesis and regulation to support the rational design of ideal quality grain.
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Affiliation(s)
- Lichun Huang
- Jiangsu Key Laboratory of Crop Genomics and Molecular Breeding, State Key Laboratory of Hybrid Rice, Key Laboratory of Plant Functional Genomics of the Ministry of Education, College of Agriculture, Yangzhou University, Yangzhou 225009, China
- Co-Innovation Center for Modern Production Technology of Grain Crops of Jiangsu Province, Key Laboratory of Crop Genetics and Physiology of Jiangsu Province, Yangzhou University, Yangzhou 225009, China
| | - Hongyan Tan
- Jiangsu Key Laboratory of Crop Genomics and Molecular Breeding, State Key Laboratory of Hybrid Rice, Key Laboratory of Plant Functional Genomics of the Ministry of Education, College of Agriculture, Yangzhou University, Yangzhou 225009, China
| | - Changquan Zhang
- Jiangsu Key Laboratory of Crop Genomics and Molecular Breeding, State Key Laboratory of Hybrid Rice, Key Laboratory of Plant Functional Genomics of the Ministry of Education, College of Agriculture, Yangzhou University, Yangzhou 225009, China
- Co-Innovation Center for Modern Production Technology of Grain Crops of Jiangsu Province, Key Laboratory of Crop Genetics and Physiology of Jiangsu Province, Yangzhou University, Yangzhou 225009, China
| | - Qianfeng Li
- Jiangsu Key Laboratory of Crop Genomics and Molecular Breeding, State Key Laboratory of Hybrid Rice, Key Laboratory of Plant Functional Genomics of the Ministry of Education, College of Agriculture, Yangzhou University, Yangzhou 225009, China
- Co-Innovation Center for Modern Production Technology of Grain Crops of Jiangsu Province, Key Laboratory of Crop Genetics and Physiology of Jiangsu Province, Yangzhou University, Yangzhou 225009, China
| | - Qiaoquan Liu
- Jiangsu Key Laboratory of Crop Genomics and Molecular Breeding, State Key Laboratory of Hybrid Rice, Key Laboratory of Plant Functional Genomics of the Ministry of Education, College of Agriculture, Yangzhou University, Yangzhou 225009, China
- Co-Innovation Center for Modern Production Technology of Grain Crops of Jiangsu Province, Key Laboratory of Crop Genetics and Physiology of Jiangsu Province, Yangzhou University, Yangzhou 225009, China
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18
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Bose U, Juhász A, Yu R, Bahmani M, Byrne K, Blundell M, Broadbent JA, Howitt CA, Colgrave ML. Proteome and Nutritional Shifts Observed in Hordein Double-Mutant Barley Lines. FRONTIERS IN PLANT SCIENCE 2021; 12:718504. [PMID: 34567030 PMCID: PMC8458801 DOI: 10.3389/fpls.2021.718504] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Accepted: 08/09/2021] [Indexed: 06/13/2023]
Abstract
Lysine is the most limiting essential amino acid in cereals, and efforts have been made over the decades to improve the nutritional quality of these grains by limiting storage protein accumulation and increasing lysine content, while maintaining desired agronomic traits. The single lys3 mutation in barley has been shown to significantly increase lysine content but also reduces grain size. Herein, the regulatory effect of the lys3 mutation that controls storage protein accumulation as well as a plethora of critically important processes in cereal seeds was investigated in double mutant barley lines. This was enabled through the generation of three hordein double-mutants by inter-crossing three single hordein mutants, that had all been backcrossed three times to the malting barley cultivar Sloop. Proteome abundance measurements were integrated with their phenotype measurements; proteins were mapped to chromosomal locations and to their corresponding functional classes. These models enabled the prediction of previously unknown points of crosstalk that connect the impact of lys3 mutations to other signalling pathways. In combination, these results provide an improved understanding of how the mutation at the lys3 locus remodels cellular functions and impact phenotype that can be used in selective breeding to generate favourable agronomic traits.
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Affiliation(s)
- Utpal Bose
- CSIRO Agriculture and Food, St Lucia, QLD, Australia
- Australian Research Council Centre of Excellence for Innovations in Peptide and Protein Science, School of Science, Edith Cowan University, Joondalup, WA, Australia
| | - Angéla Juhász
- Australian Research Council Centre of Excellence for Innovations in Peptide and Protein Science, School of Science, Edith Cowan University, Joondalup, WA, Australia
| | - Ronald Yu
- CSIRO Agriculture and Food, Canberra, ACT, Australia
| | - Mahya Bahmani
- Australian Research Council Centre of Excellence for Innovations in Peptide and Protein Science, School of Science, Edith Cowan University, Joondalup, WA, Australia
| | - Keren Byrne
- CSIRO Agriculture and Food, St Lucia, QLD, Australia
| | | | | | | | - Michelle L. Colgrave
- CSIRO Agriculture and Food, St Lucia, QLD, Australia
- Australian Research Council Centre of Excellence for Innovations in Peptide and Protein Science, School of Science, Edith Cowan University, Joondalup, WA, Australia
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19
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Doronina TV, Lazareva EM. Structure of antipodal cells nuclei of wheat embryo sac during programmed cell death. PLANTA 2021; 254:48. [PMID: 34379202 DOI: 10.1007/s00425-021-03701-5] [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: 06/05/2021] [Accepted: 08/04/2021] [Indexed: 06/13/2023]
Abstract
During antipodal cells PCD, polytene chromosomes rearrangement, segregation of nucleoli components and extrusion of nuclear components occur, cytochrome c is released from the mitochondria and DNA breaks appear. We studied in detail the nuclei of cells of the antipodal complex of wheat embryo sac (Triticum aestivum L.) during programmed cell death (PCD). The antipodal complex has been reported to be formed before double fertilisation of the embryo sac. Polyploidisation leads to the formation of giant polytene chromosomes in the nuclei of antipodal cells. These chromosomes are involved in secretory functions and are important for the development of cellular endosperm. Terminal deoxynucleotidyl transferase dUTP nick end labelling assay and immunodetection revealed DNA breaks in the nuclei and release of cytochrome c from mitochondria into the cytoplasm of antipodal cells during PCD. We used transmission electron microscopy, immunodetection and histochemistry to analyse the characteristic structural changes in the nuclei of antipodal cells during PCD. These included sequential structural changes in the nuclei containing polytene chromosomes, segregation of some components of the nucleolus into the bodies of polytene chromosomes, extrusion of nucleolar components and parts of chromosomes into the cytoplasm of antipodal cells and then into the endosperm coenocyte. The obtained results expand the understanding of the structural changes of plant cells with giant polytene chromosomes during PCD.
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Affiliation(s)
- T V Doronina
- Biology Faculty, Lomonosov Moscow State University, Leninskie Gory, 1, Building 12, Moscow, 119992, Russia.
| | - E M Lazareva
- Biology Faculty, Lomonosov Moscow State University, Leninskie Gory, 1, Building 12, Moscow, 119992, Russia
- All-Russia Research Institute for Agricultural Biotechnology, Moscow, 127550, Russia
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20
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Zhang S, Ghatak A, Bazargani MM, Bajaj P, Varshney RK, Chaturvedi P, Jiang D, Weckwerth W. Spatial distribution of proteins and metabolites in developing wheat grain and their differential regulatory response during the grain filling process. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2021; 107:669-687. [PMID: 34227164 PMCID: PMC9291999 DOI: 10.1111/tpj.15410] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2021] [Revised: 06/06/2021] [Accepted: 06/25/2021] [Indexed: 05/03/2023]
Abstract
Grain filling and grain development are essential biological processes in the plant's life cycle, eventually contributing to the final seed yield and quality in all cereal crops. Studies of how the different wheat (Triticum aestivum L.) grain components contribute to the overall development of the seed are very scarce. We performed a proteomics and metabolomics analysis in four different developing components of the wheat grain (seed coat, embryo, endosperm, and cavity fluid) to characterize molecular processes during early and late grain development. In-gel shotgun proteomics analysis at 12, 15, 20, and 26 days after anthesis (DAA) revealed 15 484 identified and quantified proteins, out of which 410 differentially expressed proteins were identified in the seed coat, 815 in the embryo, 372 in the endosperm, and 492 in the cavity fluid. The abundance of selected protein candidates revealed spatially and temporally resolved protein functions associated with development and grain filling. Multiple wheat protein isoforms involved in starch synthesis such as sucrose synthases, starch phosphorylase, granule-bound and soluble starch synthase, pyruvate phosphate dikinase, 14-3-3 proteins as well as sugar precursors undergo a major tissue-dependent change in abundance during wheat grain development suggesting an intimate interplay of starch biosynthesis control. Different isoforms of the protein disulfide isomerase family as well as glutamine levels, both involved in the glutenin macropolymer pattern, showed distinct spatial and temporal abundance, revealing their specific role as indicators of wheat gluten quality. Proteins binned into the functional category of cell growth/division and protein synthesis/degradation were more abundant in the early stages (12 and 15 DAA). At the metabolome level all tissues and especially the cavity fluid showed highly distinct metabolite profiles. The tissue-specific data are integrated with biochemical networks to generate a comprehensive map of molecular processes during grain filling and developmental processes.
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Affiliation(s)
- Shuang Zhang
- Department of Functional and Evolutionary EcologyMolecular Systems Biology Lab (MOSYS)University of ViennaAlthanstrasse 14ViennaA‐1090Austria
| | - Arindam Ghatak
- Department of Functional and Evolutionary EcologyMolecular Systems Biology Lab (MOSYS)University of ViennaAlthanstrasse 14ViennaA‐1090Austria
| | | | - Prasad Bajaj
- Centre of Excellence in Genomics and Systems BiologyInternational Crops Research Institute for the Semi‐Arid Tropics (ICRISAT)Hyderabad502324India
| | - Rajeev K. Varshney
- Centre of Excellence in Genomics and Systems BiologyInternational Crops Research Institute for the Semi‐Arid Tropics (ICRISAT)Hyderabad502324India
- State Agricultural Biotechnology CentreCentre for Crop and Food InnovationMurdoch UniversityMurdochWA6150Australia
| | - Palak Chaturvedi
- Department of Functional and Evolutionary EcologyMolecular Systems Biology Lab (MOSYS)University of ViennaAlthanstrasse 14ViennaA‐1090Austria
| | - Dong Jiang
- National Technique Innovation Center for Regional Wheat Production/Key Laboratory of Crop EcophysiologyMinistry of Agriculture/Nanjing Agricultural UniversityNanjing210095China
| | - Wolfram Weckwerth
- Department of Functional and Evolutionary EcologyMolecular Systems Biology Lab (MOSYS)University of ViennaAlthanstrasse 14ViennaA‐1090Austria
- Vienna Metabolomics Center (VIME)University of ViennaAlthanstrasse 14ViennaA‐1090Austria
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21
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Vinje MA, Henson CA, Duke SH, Simmons CH, Le K, Hall E, Hirsch CD. Description and functional analysis of the transcriptome from malting barley. Genomics 2021; 113:3310-3324. [PMID: 34273497 DOI: 10.1016/j.ygeno.2021.07.011] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2020] [Revised: 06/24/2021] [Accepted: 07/07/2021] [Indexed: 11/16/2022]
Abstract
The present study aimed to establish an early model of the malting barley transcriptome, which describes the expression of genes and their ontologies, identify the period during malting with the largest dynamic shift in gene expression for future investigation, and to determine the expression patterns of all starch degrading enzyme genes relevant to the malting and brewing industry. Large dynamic increases in gene expression occurred early in malting with differential expressed genes enriched for cell wall and starch hydrolases amongst many malting related categories. Twenty-five of forty starch degrading enzyme genes were differentially expressed in the malting barley transcriptome including eleven α-amylase genes, six β-amylase genes, three α-glucosidase genes, and all five starch debranching enzyme genes. Four new or novel α-amylase genes, one β-amylase gene (Bmy3), three α-glucosidase genes, and two isoamylase genes had appreciable expression that requires further exploration into their potential relevance to the malting and brewing industry.
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Affiliation(s)
- Marcus A Vinje
- USDA, Agricultural Research Service, Cereal Crops Research Unit, Madison, WI 53726, USA.
| | - Cynthia A Henson
- USDA, Agricultural Research Service, Cereal Crops Research Unit, Madison, WI 53726, USA; University of Wisconsin-Madison, Department of Agronomy, Madison, WI 53706, USA
| | - Stanley H Duke
- University of Wisconsin-Madison, Department of Agronomy, Madison, WI 53706, USA
| | - Carl H Simmons
- USDA, Agricultural Research Service, Cereal Crops Research Unit, Madison, WI 53726, USA
| | - Khoa Le
- University of Minnesota, Department of Plant Pathology, St. Paul, MN 55108, USA
| | - Evan Hall
- University of Minnesota, Department of Plant Pathology, St. Paul, MN 55108, USA
| | - Cory D Hirsch
- University of Minnesota, Department of Plant Pathology, St. Paul, MN 55108, USA
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22
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Geißinger C, Gastl M, Becker T. Enzymes from Cereal and Fusarium Metabolism Involved in the Malting Process – A Review. JOURNAL OF THE AMERICAN SOCIETY OF BREWING CHEMISTS 2021. [DOI: 10.1080/03610470.2021.1911272] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Cajetan Geißinger
- Chair of Brewing and Beverage Technology, Technical University of Munich (TUM), Freising, Germany
| | - Martina Gastl
- Chair of Brewing and Beverage Technology, Technical University of Munich (TUM), Freising, Germany
| | - Thomas Becker
- Chair of Brewing and Beverage Technology, Technical University of Munich (TUM), Freising, Germany
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23
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Radchuk V, Tran V, Hilo A, Muszynska A, Gündel A, Wagner S, Fuchs J, Hensel G, Ortleb S, Munz E, Rolletschek H, Borisjuk L. Grain filling in barley relies on developmentally controlled programmed cell death. Commun Biol 2021; 4:428. [PMID: 33785858 PMCID: PMC8009944 DOI: 10.1038/s42003-021-01953-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2020] [Accepted: 03/02/2021] [Indexed: 11/25/2022] Open
Abstract
Cereal grains contribute substantially to the human diet. The maternal plant provides the carbohydrate and nitrogen sources deposited in the endosperm, but the basis for their spatial allocation during the grain filling process is obscure. Here, vacuolar processing enzymes have been shown to both mediate programmed cell death (PCD) in the maternal tissues of a barley grain and influence the delivery of assimilate to the endosperm. The proposed centrality of PCD has implications for cereal crop improvement. Radchuk et al. report on the role of vacuolar processing enzymes (VPEs) in mediating programmed cell death (PCD) in the maternal tissues of a barley grain and influencing the delivery of assimilate to the endosperm. This study presents a means of increasing the efficiency of the grain filling process in the major cereal crop species by manipulating the timing of PCD.
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Affiliation(s)
- Volodymyr Radchuk
- Leibniz Institute of Plant Genetics and Crop Plant Research (IPK) Gatersleben, Seeland, Germany.
| | - Van Tran
- Leibniz Institute of Plant Genetics and Crop Plant Research (IPK) Gatersleben, Seeland, Germany
| | - Alexander Hilo
- Leibniz Institute of Plant Genetics and Crop Plant Research (IPK) Gatersleben, Seeland, Germany
| | - Aleksandra Muszynska
- Leibniz Institute of Plant Genetics and Crop Plant Research (IPK) Gatersleben, Seeland, Germany
| | - Andre Gündel
- Leibniz Institute of Plant Genetics and Crop Plant Research (IPK) Gatersleben, Seeland, Germany
| | - Steffen Wagner
- Leibniz Institute of Plant Genetics and Crop Plant Research (IPK) Gatersleben, Seeland, Germany
| | - Joerg Fuchs
- Leibniz Institute of Plant Genetics and Crop Plant Research (IPK) Gatersleben, Seeland, Germany
| | - Goetz Hensel
- Leibniz Institute of Plant Genetics and Crop Plant Research (IPK) Gatersleben, Seeland, Germany
| | - Stefan Ortleb
- Leibniz Institute of Plant Genetics and Crop Plant Research (IPK) Gatersleben, Seeland, Germany
| | - Eberhard Munz
- Leibniz Institute of Plant Genetics and Crop Plant Research (IPK) Gatersleben, Seeland, Germany
| | - Hardy Rolletschek
- Leibniz Institute of Plant Genetics and Crop Plant Research (IPK) Gatersleben, Seeland, Germany
| | - Ljudmilla Borisjuk
- Leibniz Institute of Plant Genetics and Crop Plant Research (IPK) Gatersleben, Seeland, Germany.
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24
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Ram H, Singh A, Katoch M, Kaur R, Sardar S, Palia S, Satyam R, Sonah H, Deshmukh R, Pandey AK, Gupta I, Sharma TR. Dissecting the nutrient partitioning mechanism in rice grain using spatially resolved gene expression profiling. JOURNAL OF EXPERIMENTAL BOTANY 2021; 72:2212-2230. [PMID: 33197257 DOI: 10.1093/jxb/eraa536] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/26/2020] [Accepted: 11/12/2020] [Indexed: 06/11/2023]
Abstract
Rice, a staple food worldwide, contains varying amounts of nutrients in different grain tissues. The underlying molecular mechanism of such distinct nutrient partitioning remains poorly investigated. Here, an optimized rapid laser capture microdissection (LCM) approach was used to individually collect pericarp, aleurone, embryo and endosperm from grains 10 days after fertilization. Subsequent RNA-Seq analysis in these tissues identified 7760 differentially expressed genes. Analysis of promoter sequences of tissue-specific genes identified many known and novel cis-elements important for grain filling and seed development. Using the identified differentially expressed genes, comprehensive spatial gene expression pathways were built for accumulation of starch, proteins, lipids, and iron. The extensive transcriptomic analysis provided novel insights about nutrient partitioning mechanisms; for example, it revealed a gradient in seed storage protein accumulation across the four tissue types analysed. The analysis also revealed that the partitioning of various minerals, such as iron, is most likely regulated through transcriptional control of their transporters. We present the extensive analysis from this study as an interactive online tool that provides a much-needed resource for future functional genomics studies aimed to improve grain quality and seed development.
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Affiliation(s)
- Hasthi Ram
- National Agri-Food Biotechnology Institute (NABI), S.A.S. Nagar, Mohali, Punjab, India
| | - Anmol Singh
- National Agri-Food Biotechnology Institute (NABI), S.A.S. Nagar, Mohali, Punjab, India
| | - Megha Katoch
- National Agri-Food Biotechnology Institute (NABI), S.A.S. Nagar, Mohali, Punjab, India
| | - Ravneet Kaur
- National Agri-Food Biotechnology Institute (NABI), S.A.S. Nagar, Mohali, Punjab, India
| | - Shaswati Sardar
- National Agri-Food Biotechnology Institute (NABI), S.A.S. Nagar, Mohali, Punjab, India
| | - Shubham Palia
- Department of Biochemical Engineering and Biotechnology, Block I, Indian Institute of Technology Delhi, Hauz Khas, New Delhi, India
| | - Rohit Satyam
- Department of Biochemical Engineering and Biotechnology, Block I, Indian Institute of Technology Delhi, Hauz Khas, New Delhi, India
| | - Humira Sonah
- National Agri-Food Biotechnology Institute (NABI), S.A.S. Nagar, Mohali, Punjab, India
| | - Rupesh Deshmukh
- National Agri-Food Biotechnology Institute (NABI), S.A.S. Nagar, Mohali, Punjab, India
| | - Ajay Kumar Pandey
- National Agri-Food Biotechnology Institute (NABI), S.A.S. Nagar, Mohali, Punjab, India
| | - Ishaan Gupta
- Department of Biochemical Engineering and Biotechnology, Block I, Indian Institute of Technology Delhi, Hauz Khas, New Delhi, India
| | - Tilak Raj Sharma
- National Agri-Food Biotechnology Institute (NABI), S.A.S. Nagar, Mohali, Punjab, India
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25
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Lu J, Le Hir R, Gómez-Páez DM, Coen O, Péchoux C, Jasinski S, Magnani E. The nucellus: between cell elimination and sugar transport. PLANT PHYSIOLOGY 2021; 185:478-490. [PMID: 33721907 PMCID: PMC8133628 DOI: 10.1093/plphys/kiaa045] [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: 10/20/2020] [Accepted: 11/10/2020] [Indexed: 05/29/2023]
Abstract
The architecture of the seed is shaped by the processes of tissue partitioning, which determines the volume ratio of maternal and zygotic tissues, and nutrient partitioning, which regulates nutrient distribution among tissues. In angiosperms, early seed development is characterized by antagonistic development of the nucellus maternal tissue and the endosperm fertilization product to become the main sugar sink. This process marked the evolution of angiosperms and outlines the most ancient seed architectures. In Arabidopsis, the endosperm partially eliminates the nucellus and imports sugars from the seed coat. Here, we show that the nucellus is symplasmically connected to the chalaza, the seed nutrient unloading zone, and works as both a sugar sink and source alongside the seed coat. After fertilization, the transient nucellus accumulates starch early on and releases it in the apoplasmic space during its elimination. By contrast, the persistent nucellus exports sugars toward the endosperm through the SWEET4 hexose facilitator. Finally, we analyzed sugar metabolism and transport in the transparent testa 16 mutant, which fails to undergo nucellus cell elimination, which shed light on the coordination between tissue and nutrient partitioning. Overall, this study identifies a path of sugar transport in the Arabidopsis seed and describes a link between sugar redistribution and the nucellus cell-elimination program.
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Affiliation(s)
- Jing Lu
- Institut Jean-Pierre Bourgin, INRAE, AgroParisTech, CNRS, University of Paris-Saclay, Route de St-Cyr (RD10), 78026 Versailles Cedex, France
- École Doctorale 567 Sciences du Végétal, University Paris-Sud, University of Paris-Saclay, bat 360, 91405 Orsay Cedex, France
| | - Rozenn Le Hir
- Institut Jean-Pierre Bourgin, INRAE, AgroParisTech, CNRS, University of Paris-Saclay, Route de St-Cyr (RD10), 78026 Versailles Cedex, France
| | - Dennys-Marcela Gómez-Páez
- Institut Jean-Pierre Bourgin, INRAE, AgroParisTech, CNRS, University of Paris-Saclay, Route de St-Cyr (RD10), 78026 Versailles Cedex, France
| | - Olivier Coen
- Institut Jean-Pierre Bourgin, INRAE, AgroParisTech, CNRS, University of Paris-Saclay, Route de St-Cyr (RD10), 78026 Versailles Cedex, France
- École Doctorale 567 Sciences du Végétal, University Paris-Sud, University of Paris-Saclay, bat 360, 91405 Orsay Cedex, France
| | - Christine Péchoux
- INRAE, Génétique Animale et Biologie Intégrative, Domaine de Vilvert, 78352 Jouy-en-Josas Cedex, France
| | - Sophie Jasinski
- Institut Jean-Pierre Bourgin, INRAE, AgroParisTech, CNRS, University of Paris-Saclay, Route de St-Cyr (RD10), 78026 Versailles Cedex, France
| | - Enrico Magnani
- Institut Jean-Pierre Bourgin, INRAE, AgroParisTech, CNRS, University of Paris-Saclay, Route de St-Cyr (RD10), 78026 Versailles Cedex, France
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26
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Nowicka A, Kovacik M, Tokarz B, Vrána J, Zhang Y, Weigt D, Doležel J, Pecinka A. Dynamics of endoreduplication in developing barley seeds. JOURNAL OF EXPERIMENTAL BOTANY 2021; 72:268-282. [PMID: 33005935 DOI: 10.1093/jxb/eraa453] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/25/2020] [Accepted: 09/29/2020] [Indexed: 06/11/2023]
Abstract
Seeds are complex biological systems comprising three genetically distinct tissues: embryo, endosperm, and maternal tissues (including seed coats and pericarp) nested inside one another. Cereal grains represent a special type of seeds, with the largest part formed by the endosperm, a specialized triploid tissue ensuring embryo protection and nourishment. We investigated dynamic changes in DNA content in three of the major seed tissues from the time of pollination up to the dry seed. We show that the cell cycle is under strict developmental control in different seed compartments. After an initial wave of active cell division, cells switch to endocycle and most endoreduplication events are observed in the endosperm and seed maternal tissues. Using different barley cultivars, we show that there is natural variation in the kinetics of this process. During the terminal stages of seed development, specific and selective loss of endoreduplicated nuclei occurs in the endosperm. This is accompanied by reduced stability of the nuclear genome, progressive loss of cell viability, and finally programmed cell death. In summary, our study shows that endopolyploidization and cell death are linked phenomena that frame barley grain development.
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Affiliation(s)
- Anna Nowicka
- Institute of Experimental Botany of the Czech Academy of Sciences, Centre of the Region Haná for Biotechnological and Agricultural Research, Olomouc, Czech Republic
- The Polish Academy of Sciences, The Franciszek Górski Institute of Plant Physiology, Krakow, Poland
| | - Martin Kovacik
- Institute of Experimental Botany of the Czech Academy of Sciences, Centre of the Region Haná for Biotechnological and Agricultural Research, Olomouc, Czech Republic
| | - Barbara Tokarz
- Department of Botany, Physiology and Plant Protection, Faculty of Biotechnology and Horticulture, University of Agriculture in Krakow, Krakow, Poland
| | - Jan Vrána
- Institute of Experimental Botany of the Czech Academy of Sciences, Centre of the Region Haná for Biotechnological and Agricultural Research, Olomouc, Czech Republic
| | - Yueqi Zhang
- Research School Biology (RSB), University of Western Australia (UWA), Crawley, Perth, Australia
| | - Dorota Weigt
- Department of Genetics and Plant Breeding, Poznan University of Life Sciences, Poznan, Poland
| | - Jaroslav Doležel
- Institute of Experimental Botany of the Czech Academy of Sciences, Centre of the Region Haná for Biotechnological and Agricultural Research, Olomouc, Czech Republic
| | - Ales Pecinka
- Institute of Experimental Botany of the Czech Academy of Sciences, Centre of the Region Haná for Biotechnological and Agricultural Research, Olomouc, Czech Republic
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27
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Xie D, Yu Y, Dai Z, Sun J, Su J. Identification and characterization of miRNAs and target genes in developing flax seeds by multigroup analysis. BIOTECHNOL BIOTEC EQ 2021. [DOI: 10.1080/13102818.2021.1903337] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
Affiliation(s)
- Dongwei Xie
- Department of Biotechnology, School of Life Science, Nantong University, Jiangsu, Nantong, PR China
| | - Yue Yu
- Laboratory of Germplasm Resources and Utilization of Economic Crops in South China, Institute of Bast Fiber Crops, Chinese Academy of Agricultural Sciences, Hunan, Changsha, PR China
| | - Zhigang Dai
- Laboratory of Germplasm Resources and Utilization of Economic Crops in South China, Institute of Bast Fiber Crops, Chinese Academy of Agricultural Sciences, Hunan, Changsha, PR China
| | - Jian Sun
- Department of Biotechnology, School of Life Science, Nantong University, Jiangsu, Nantong, PR China
| | - Jianguang Su
- Laboratory of Germplasm Resources and Utilization of Economic Crops in South China, Institute of Bast Fiber Crops, Chinese Academy of Agricultural Sciences, Hunan, Changsha, PR China
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28
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Collins HM, Betts NS, Dockter C, Berkowitz O, Braumann I, Cuesta-Seijo JA, Skadhauge B, Whelan J, Bulone V, Fincher GB. Genes That Mediate Starch Metabolism in Developing and Germinated Barley Grain. FRONTIERS IN PLANT SCIENCE 2021; 12:641325. [PMID: 33732278 PMCID: PMC7959180 DOI: 10.3389/fpls.2021.641325] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Accepted: 01/27/2021] [Indexed: 05/21/2023]
Abstract
Starch is synthesized in the endosperm of developing barley grain, where it functions as the primary source of stored carbohydrate. In germinated grain these starch reserves are hydrolyzed to small oligosaccharides and glucose, which are transported to the embryo to support the growth of the developing seedling. Some of the mobilized glucose is transiently stored as starch in the scutellum of germinated grain. These processes are crucial for early seedling vigor, which is a key determinant of crop productivity and global food security. Several starch synthases (SS), starch-branching enzymes (SBEs), and starch debranching enzymes (isoamylases, ISA), together with a limit dextrinase (LD), have been implicated in starch synthesis from nucleotide-sugar precursors. Starch synthesis occurs both in the developing endosperm and in the scutellum of germinated grain. For the complete depolymerization of starch to glucose, α-amylase (Amy), β-amylase (Bmy), isoamylase (ISA), limit dextrinase (LD), and α-glucosidase (AGL) are required. Most of these enzymes are encoded by gene families of up to 10 or more members. Here RNA-seq transcription data from isolated tissues of intact developing and germinated barley grain have allowed us to identify the most important, specific gene family members for each of these processes in vivo and, at the same time, we have defined in detail the spatio-temporal coordination of gene expression in different tissues of the grain. A transcript dataset for 81,280 genes is publicly available as a resource for investigations into other cellular and biochemical processes that occur in the developing grain from 6 days after pollination.
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Affiliation(s)
- Helen M. Collins
- Australian Research Council Centre of Excellence in Plant Cell Walls, School of Agriculture, Food and Wine, University of Adelaide, Glen Osmond, SA, Australia
| | - Natalie S. Betts
- Australian Research Council Centre of Excellence in Plant Cell Walls, School of Agriculture, Food and Wine, University of Adelaide, Glen Osmond, SA, Australia
| | | | - Oliver Berkowitz
- School of Life Sciences and ARC Centre of Excellence in Plant Energy Biology, La Trobe University, Bundoora, VIC, Australia
| | | | | | | | - James Whelan
- School of Life Sciences and ARC Centre of Excellence in Plant Energy Biology, La Trobe University, Bundoora, VIC, Australia
| | - Vincent Bulone
- Australian Research Council Centre of Excellence in Plant Cell Walls, School of Agriculture, Food and Wine, University of Adelaide, Glen Osmond, SA, Australia
- Adelaide Glycomics, School of Agriculture, Food and Wine, University of Adelaide, Glen Osmond, SA, Australia
| | - Geoffrey B. Fincher
- Australian Research Council Centre of Excellence in Plant Cell Walls, School of Agriculture, Food and Wine, University of Adelaide, Glen Osmond, SA, Australia
- *Correspondence: Geoffrey B. Fincher,
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29
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Sun H, Li J, Song H, Yang D, Deng X, Liu J, Wang Y, Ma J, Xiong Y, Liu Y, Yang M. Comprehensive analysis of AGPase genes uncovers their potential roles in starch biosynthesis in lotus seed. BMC PLANT BIOLOGY 2020; 20:457. [PMID: 33023477 PMCID: PMC7541243 DOI: 10.1186/s12870-020-02666-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/09/2020] [Accepted: 09/23/2020] [Indexed: 05/06/2023]
Abstract
BACKGROUND Starch in the lotus seed contains a high proportion of amylose, which endows lotus seed a promising property in the development of hypoglycemic and low-glycemic index functional food. Currently, improving starch content is one of the major goals for seed-lotus breeding. ADP-glucose pyrophosphorylase (AGPase) plays an essential role in regulating starch biosynthesis in plants, but little is known about its characterization in lotus. RESULTS We describe the nutritional compositions of lotus seed among 30 varieties with starch as a major component. Comparative transcriptome analysis showed that AGPase genes were differentially expressed in two varieties (CA and JX) with significant different starch content. Seven putative AGPase genes were identified in the lotus genome (Nelumbo nucifera Gaertn.), which could be grouped into two subfamilies. Selective pressure analysis indicated that purifying selection acted as a vital force in the evolution of AGPase genes. Expression analysis revealed that lotus AGPase genes have varying expression patterns, with NnAGPL2a and NnAGPS1a as the most predominantly expressed, especially in seed and rhizome. NnAGPL2a and NnAGPS1a were co-expressed with a number of starch and sucrose metabolism pathway related genes, and their expressions were accompanied by increased AGPase activity and starch content in lotus seed. CONCLUSIONS Seven AGPase genes were characterized in lotus, with NnAGPL2a and NnAGPS1a, as the key genes involved in starch biosynthesis in lotus seed. These results considerably extend our understanding on lotus AGPase genes and provide theoretical basis for breeding new lotus varieties with high-starch content.
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Affiliation(s)
- Heng Sun
- Key Laboratory of Plant Germplasm Enhancement and Specialty Agriculture, Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan, 430074 China
| | - Juanjuan Li
- Hubei Province Research Center of Engineering Technology for Utilization of Botanical Functional Ingredients, Hubei Key Laboratory of Quality Control of Characteristic Fruits and Vegetables, College of Life Science and Technology, Hubei Engineering University, Xiaogan, 432000 Hubei China
| | - Heyun Song
- Key Laboratory of Plant Germplasm Enhancement and Specialty Agriculture, Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan, 430074 China
- University of Chinese Academy of Sciences, 19A Yuquanlu, Beijing, 100049 China
| | - Dong Yang
- Key Laboratory of Plant Germplasm Enhancement and Specialty Agriculture, Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan, 430074 China
- Center of Economic Botany, Core Botanical Gardens, Chinese Academy of Sciences, Wuhan, 430074 China
| | - Xianbao Deng
- Key Laboratory of Plant Germplasm Enhancement and Specialty Agriculture, Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan, 430074 China
- Center of Economic Botany, Core Botanical Gardens, Chinese Academy of Sciences, Wuhan, 430074 China
| | - Juan Liu
- Key Laboratory of Plant Germplasm Enhancement and Specialty Agriculture, Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan, 430074 China
| | - Yunmeng Wang
- Key Laboratory of Plant Germplasm Enhancement and Specialty Agriculture, Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan, 430074 China
- University of Chinese Academy of Sciences, 19A Yuquanlu, Beijing, 100049 China
| | - Junyu Ma
- Key Laboratory of Plant Germplasm Enhancement and Specialty Agriculture, Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan, 430074 China
- University of Chinese Academy of Sciences, 19A Yuquanlu, Beijing, 100049 China
| | - Yaqian Xiong
- Key Laboratory of Plant Germplasm Enhancement and Specialty Agriculture, Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan, 430074 China
- University of Chinese Academy of Sciences, 19A Yuquanlu, Beijing, 100049 China
| | - Yanling Liu
- Key Laboratory of Plant Germplasm Enhancement and Specialty Agriculture, Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan, 430074 China
| | - Mei Yang
- Key Laboratory of Plant Germplasm Enhancement and Specialty Agriculture, Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan, 430074 China
- Center of Economic Botany, Core Botanical Gardens, Chinese Academy of Sciences, Wuhan, 430074 China
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Doronina TV, Sheval EV, Lazareva EM. Programmed Cell Death during Formation of the Embryo Sac and Seed. Russ J Dev Biol 2020. [DOI: 10.1134/s1062360420030029] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Vinje MA, Duke SH, Henson CA. De novo Expression of β-amylase2 (Bmy2) in Barley Grains During Micromalting. JOURNAL OF THE AMERICAN SOCIETY OF BREWING CHEMISTS 2020. [DOI: 10.1080/03610470.2019.1705104] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- Marcus A. Vinje
- Agricultural Research Service, Cereal Crops Research Unit, USDA, Madison, WI, U.S.A.
| | - Stanley H. Duke
- Department of Agronomy, University of Wisconsin- Madison, Madison, WI, U.S.A
| | - Cynthia A. Henson
- Agricultural Research Service, Cereal Crops Research Unit, USDA, Madison, WI, U.S.A.
- Department of Agronomy, University of Wisconsin- Madison, Madison, WI, U.S.A
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Andersen S, Svensson B, Møller MS. Roles of the N-terminal domain and remote substrate binding subsites in activity of the debranching barley limit dextrinase. BIOCHIMICA ET BIOPHYSICA ACTA-PROTEINS AND PROTEOMICS 2020; 1868:140294. [DOI: 10.1016/j.bbapap.2019.140294] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/16/2019] [Revised: 09/15/2019] [Accepted: 10/10/2019] [Indexed: 11/28/2022]
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Lim WL, Collins HM, Byrt CS, Lahnstein J, Shirley NJ, Aubert MK, Tucker MR, Peukert M, Matros A, Burton RA. Overexpression of HvCslF6 in barley grain alters carbohydrate partitioning plus transfer tissue and endosperm development. JOURNAL OF EXPERIMENTAL BOTANY 2020; 71:138-153. [PMID: 31536111 PMCID: PMC6913740 DOI: 10.1093/jxb/erz407] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/08/2019] [Accepted: 09/06/2019] [Indexed: 05/05/2023]
Abstract
In cereal grain, sucrose is converted into storage carbohydrates: mainly starch, fructan, and mixed-linkage (1,3;1,4)-β-glucan (MLG). Previously, endosperm-specific overexpression of the HvCslF6 gene in hull-less barley was shown to result in high MLG and low starch content in mature grains. Morphological changes included inwardly elongated aleurone cells, irregular cell shapes of peripheral endosperm, and smaller starch granules of starchy endosperm. Here we explored the physiological basis for these defects by investigating how changes in carbohydrate composition of developing grain impact mature grain morphology. Augmented MLG coincided with increased levels of soluble carbohydrates in the cavity and endosperm at the storage phase. Transcript levels of genes relating to cell wall, starch, sucrose, and fructan metabolism were perturbed in all tissues. The cell walls of endosperm transfer cells (ETCs) in transgenic grain were thinner and showed reduced mannan labelling relative to the wild type. At the early storage phase, ruptures of the non-uniformly developed ETCs and disorganization of adjacent endosperm cells were observed. Soluble sugars accumulated in the developing grain cavity, suggesting a disturbance of carbohydrate flow from the cavity towards the endosperm, resulting in a shrunken mature grain phenotype. Our findings demonstrate the importance of regulating carbohydrate partitioning in maintenance of grain cellularization and filling processes.
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Affiliation(s)
- Wai Li Lim
- Australian Research Council Centre of Excellence in Plant Cell Walls, University of Adelaide, Waite Campus, Urrbrae, SA, Australia
- School of Agriculture, Food and Wine, University of Adelaide, Waite Campus, Urrbrae, SA, Australia
| | - Helen M Collins
- Australian Research Council Centre of Excellence in Plant Cell Walls, University of Adelaide, Waite Campus, Urrbrae, SA, Australia
- School of Agriculture, Food and Wine, University of Adelaide, Waite Campus, Urrbrae, SA, Australia
| | - Caitlin S Byrt
- Australian Research Council Centre of Excellence in Plant Cell Walls, University of Adelaide, Waite Campus, Urrbrae, SA, Australia
- School of Agriculture, Food and Wine, University of Adelaide, Waite Campus, Urrbrae, SA, Australia
- Present address: Australian Research Council Centre of Excellence in Plant Energy Biology, University of Adelaide, Waite Campus, Urrbrae, SA, Australia
| | - Jelle Lahnstein
- Australian Research Council Centre of Excellence in Plant Cell Walls, University of Adelaide, Waite Campus, Urrbrae, SA, Australia
- School of Agriculture, Food and Wine, University of Adelaide, Waite Campus, Urrbrae, SA, Australia
| | - Neil J Shirley
- Australian Research Council Centre of Excellence in Plant Cell Walls, University of Adelaide, Waite Campus, Urrbrae, SA, Australia
- School of Agriculture, Food and Wine, University of Adelaide, Waite Campus, Urrbrae, SA, Australia
| | - Matthew K Aubert
- Australian Research Council Centre of Excellence in Plant Cell Walls, University of Adelaide, Waite Campus, Urrbrae, SA, Australia
- School of Agriculture, Food and Wine, University of Adelaide, Waite Campus, Urrbrae, SA, Australia
| | - Matthew R Tucker
- Australian Research Council Centre of Excellence in Plant Cell Walls, University of Adelaide, Waite Campus, Urrbrae, SA, Australia
- School of Agriculture, Food and Wine, University of Adelaide, Waite Campus, Urrbrae, SA, Australia
| | - Manuela Peukert
- Applied Biochemistry Group, Leibniz Institute of Plant Genetics and Crop Plant Research Stadt Seeland, Gatersleben, Germany
- Present address: Federal Research Institute of Nutrition and Food, Department of Safety and Quality of Meat, Kulmbach, Bavaria, Germany
| | - Andrea Matros
- Applied Biochemistry Group, Leibniz Institute of Plant Genetics and Crop Plant Research Stadt Seeland, Gatersleben, Germany
- Present address: Australian Research Council Centre of Excellence in Plant Energy Biology, University of Adelaide, Waite Campus, Urrbrae, SA, Australia
| | - Rachel A Burton
- Australian Research Council Centre of Excellence in Plant Cell Walls, University of Adelaide, Waite Campus, Urrbrae, SA, Australia
- School of Agriculture, Food and Wine, University of Adelaide, Waite Campus, Urrbrae, SA, Australia
- Correspondence:
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Mapping dynamic QTL dissects the genetic architecture of grain size and grain filling rate at different grain-filling stages in barley. Sci Rep 2019; 9:18823. [PMID: 31827117 PMCID: PMC6906516 DOI: 10.1038/s41598-019-53620-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2019] [Accepted: 08/31/2019] [Indexed: 02/07/2023] Open
Abstract
Grain filling is an important growth process in formation of yield and quality for barley final yield determination. To explore the grain development behavior during grain filling period in barley, a high-density genetic map with 1962 markers deriving from a doubled haploid (DH) population of 122 lines was used to identify dynamic quantitative trait locus (QTL) for grain filling rate (GFR) and five grain size traits: grain area (GA), grain perimeter (GP), grain length (GL), grain width (GW) and grain diameter (GD). Unconditional QTL mapping is to detect the cumulative effect of genetic factors on a phenotype from development to a certain stage. Conditional QTL mapping is to detect a net effect of genetic factors on the phenotype at adjacent time intervals. Using unconditional, conditional and covariate QTL mapping methods, we successfully detected 34 major consensus QTLs. Moreover, certain candidate genes related to grain size, plant height, yield, and starch synthesis were identified in six QTL clusters, and individual gene was specifically expressed in different grain filling stages. These findings provide useful information for understanding the genetic basis of the grain filling dynamic process and will be useful for molecular marker-assisted selection in barley breeding.
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Cuesta-Seijo JA, De Porcellinis AJ, Valente AH, Striebeck A, Voss C, Marri L, Hansson A, Jansson AM, Dinesen MH, Fangel JU, Harholt J, Popovic M, Thieme M, Hochmuth A, Zeeman SC, Mikkelsen TN, J�rgensen RB, Roitsch TG, M�ller BL, Braumann I. Amylopectin Chain Length Dynamics and Activity Signatures of Key Carbon Metabolic Enzymes Highlight Early Maturation as Culprit for Yield Reduction of Barley Endosperm Starch after Heat Stress. PLANT & CELL PHYSIOLOGY 2019; 60:2692-2706. [PMID: 31397873 PMCID: PMC6896705 DOI: 10.1093/pcp/pcz155] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/19/2019] [Accepted: 07/30/2019] [Indexed: 05/30/2023]
Abstract
Abiotic environmental stresses have a negative impact on the yield and quality of crops. Understanding these stresses is an essential enabler for mitigating breeding strategies and it becomes more important as the frequency of extreme weather conditions increases due to climate change. This study analyses the response of barley (Hordeum vulgare L.) to a heat wave during grain filling in three distinct stages: the heat wave itself, the return to a normal temperature regime, and the process of maturation and desiccation. The properties and structure of the starch produced were followed throughout the maturational stages. Furthermore, the key enzymes involved in the carbohydrate supply to the grain were monitored. We observed differences in starch structure with well-separated effects because of heat stress and during senescence. Heat stress produced marked effects on sucrolytic enzymes in source and sink tissues. Early cessation of plant development as an indirect consequence of the heat wave was identified as the major contributor to final yield loss from the stress, highlighting the importance for functional stay-green traits for the development of heat-resistant cereals.
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Affiliation(s)
| | | | | | - Alexander Striebeck
- Carlsberg Research Laboratory, J.C, Jacobsens Gade 4, 1799 Copenhagen V, Denmark
| | - Cynthia Voss
- Carlsberg Research Laboratory, J.C, Jacobsens Gade 4, 1799 Copenhagen V, Denmark
| | - Lucia Marri
- Carlsberg Research Laboratory, J.C, Jacobsens Gade 4, 1799 Copenhagen V, Denmark
| | - Andreas Hansson
- Carlsberg Research Laboratory, J.C, Jacobsens Gade 4, 1799 Copenhagen V, Denmark
| | - Anita M Jansson
- Carlsberg Research Laboratory, J.C, Jacobsens Gade 4, 1799 Copenhagen V, Denmark
| | | | - Jonatan Ulrik Fangel
- Carlsberg Research Laboratory, J.C, Jacobsens Gade 4, 1799 Copenhagen V, Denmark
| | - Jesper Harholt
- Carlsberg Research Laboratory, J.C, Jacobsens Gade 4, 1799 Copenhagen V, Denmark
| | - Milan Popovic
- Department of Plant and Environmental Sciences, Copenhagen Plant Science Centre, University of Copenhagen, Hojbakkegard Alle, 2630 Taastrup, Denmark
| | - Mercedes Thieme
- Carlsberg Research Laboratory, J.C, Jacobsens Gade 4, 1799 Copenhagen V, Denmark
- Institute of Molecular Plant Biology, ETH Zurich, Zurich 8092, Switzerland
| | - Anton Hochmuth
- Carlsberg Research Laboratory, J.C, Jacobsens Gade 4, 1799 Copenhagen V, Denmark
- Institute of Molecular Plant Biology, ETH Zurich, Zurich 8092, Switzerland
| | - Samuel C Zeeman
- Institute of Molecular Plant Biology, ETH Zurich, Zurich 8092, Switzerland
| | - Teis N�rgaard Mikkelsen
- Atmospheric Environment, DTU Environmental engineering, Technical University of Denmark, Building 115, 2800 Kgs, Lyngby, Denmark
| | - Rikke Bagger J�rgensen
- Atmospheric Environment, DTU Environmental engineering, Technical University of Denmark, Building 115, 2800 Kgs, Lyngby, Denmark
| | - Thomas Georg Roitsch
- Department of Plant and Environmental Sciences, Copenhagen Plant Science Centre, University of Copenhagen, Hojbakkegard Alle, 2630 Taastrup, Denmark
| | - Birger Lindberg M�ller
- Carlsberg Research Laboratory, J.C, Jacobsens Gade 4, 1799 Copenhagen V, Denmark
- Plant Biochemistry Laboratory, Department of Plant and Environmental Sciences, University of Copenhagen, 1871 Frederiksberg, Denmark
| | - Ilka Braumann
- Carlsberg Research Laboratory, J.C, Jacobsens Gade 4, 1799 Copenhagen V, Denmark
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36
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Dong J, Zheng Y, Fu Y, Wang J, Yuan S, Wang Y, Zhu Q, Ou X, Li G, Kang G. PDIL1-2 can indirectly and negatively regulate expression of the AGPL1 gene in bread wheat. Biol Res 2019; 52:56. [PMID: 31699158 PMCID: PMC6839113 DOI: 10.1186/s40659-019-0263-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2018] [Accepted: 10/25/2019] [Indexed: 12/02/2022] Open
Abstract
Background ADP-glucose pyrophosphorylase (AGPase), the key enzyme in plant starch biosynthesis, is a heterotetramer composed of two identical large subunits and two identical small subunits. AGPase has plastidial and cytosolic isoforms in higher plants, whereas it is mainly detected in the cytosol of grain endosperms in cereal crops. Our previous results have shown that the expression of the TaAGPL1 gene, encoding the cytosolic large subunit of wheat AGPase, temporally coincides with the rate of starch accumulation and that its overexpression dramatically increases wheat AGPase activity and the rate of starch accumulation, suggesting an important role. Methods In this study, we performed yeast one-hybrid screening using the promoter of the TaAGPL1 gene as bait and a wheat grain cDNA library as prey to screen out the upstream regulators of TaAGPL1 gene. And the barley stripe mosaic virus-induced gene-silencing (BSMV-VIGS) method was used to verify the functional characterization of the identified regulators in starch biosynthesis. Results Disulfide isomerase 1-2 protein (TaPDIL1-2) was screened out, and its binding to the TaAGPL1-1D promoter was further verified using another yeast one-hybrid screen. Transiently silenced wheat plants of the TaPDIL1-2 gene were obtained by using BSMV-VIGS method under field conditions. In grains of BSMV-VIGS-TaPDIL1-2-silenced wheat plants, the TaAGPL1 gene transcription levels, grain starch contents, and 1000-kernel weight also significantly increased. Conclusions As important chaperones involved in oxidative protein folding, PDIL proteins have been reported to form hetero-dimers with some transcription factors, and thus, our results suggested that TaPDIL1-2 protein could indirectly and negatively regulate the expression of the TaAGPL1 gene and function in starch biosynthesis.
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Affiliation(s)
- Jie Dong
- The National Key Laboratory of Wheat and Maize Crop Science, Henan Agricultural University, #15 Longzihu College District, Zhengzhou, 450046, China
| | - Yongxing Zheng
- The National Engineering Research Center for Wheat, Henan Agricultural University, #63 Nongye Road, Zhengzhou, 450046, Henan, China
| | - Yihan Fu
- The National Engineering Research Center for Wheat, Henan Agricultural University, #63 Nongye Road, Zhengzhou, 450046, Henan, China
| | - Jinxi Wang
- The National Key Laboratory of Wheat and Maize Crop Science, Henan Agricultural University, #15 Longzihu College District, Zhengzhou, 450046, China
| | - Shasha Yuan
- The National Engineering Research Center for Wheat, Henan Agricultural University, #63 Nongye Road, Zhengzhou, 450046, Henan, China
| | - Yonghua Wang
- The National Engineering Research Center for Wheat, Henan Agricultural University, #63 Nongye Road, Zhengzhou, 450046, Henan, China
| | - Qidi Zhu
- The School of Science and Technology, Henan Institute of Science and Technology, Xinxiang, 453003, China
| | - Xingqi Ou
- The School of Science and Technology, Henan Institute of Science and Technology, Xinxiang, 453003, China
| | - Gezi Li
- The National Key Laboratory of Wheat and Maize Crop Science, Henan Agricultural University, #15 Longzihu College District, Zhengzhou, 450046, China.
| | - Guozhang Kang
- The National Key Laboratory of Wheat and Maize Crop Science, Henan Agricultural University, #15 Longzihu College District, Zhengzhou, 450046, China. .,The National Engineering Research Center for Wheat, Henan Agricultural University, #63 Nongye Road, Zhengzhou, 450046, Henan, China.
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37
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Lee DW, Lee SK, Rahman MM, Kim YJ, Zhang D, Jeon JS. The Role of Rice Vacuolar Invertase2 in Seed Size Control. Mol Cells 2019; 42:711-720. [PMID: 31607684 PMCID: PMC6821455 DOI: 10.14348/molcells.2019.0109] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2019] [Revised: 08/19/2019] [Accepted: 08/21/2019] [Indexed: 12/23/2022] Open
Abstract
Sink strength optimizes sucrose import, which is fundamental to support developing seed grains and increase crop yields, including those of rice (Oryza sativa). In this regard, little is known about the function of vacuolar invertase (VIN) in controlling sink strength and thereby seed size. Here, in rice we analyzed mutants of two VINs, OsVIN1 and OsVIN2, to examine their role during seed development. In a phenotypic analysis of the T-DNA insertion mutants, only the OsVIN2 mutant osvin2-1 exhibited reduced seed size and grain weight. Scanning electron microscopy analysis revealed that the small seed grains of osvin2-1 can be attributed to a reduction in spikelet size. A significant decrease in VIN activity and hexose level in the osvin2-1 spikelets interfered with spikelet growth. In addition, significant reduction in starch and increase in sucrose, which are characteristic features of reduced turnover and flux of sucrose due to impaired sink strength, were evident in the pre-storage stage of osvin2-1 developing grains. In situ hybridization analysis found that expression of OsVIN2 was predominant in the endocarp of developing grains. A genetically complemented line with a native genomic clone of OsVIN2 rescued reduced VIN activity and seed size. Two additional mutants, osvin2-2 and osvin2-3 generated by the CRISPR/Cas9 method, exhibited phenotypes similar to those of osvin2-1 in spikelet and seed size, VIN activity, and sugar metabolites. These results clearly demonstrate an important role of OsVIN2 as sink strength modulator that is critical for the maintenance of sucrose flux into developing seed grains.
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Affiliation(s)
- Dae-Woo Lee
- Graduate School of Biotechnology and Crop Biotech Institute, Kyung Hee University, Yongin 17104,
Korea
| | - Sang-Kyu Lee
- Graduate School of Biotechnology and Crop Biotech Institute, Kyung Hee University, Yongin 17104,
Korea
| | - Md Mizanor Rahman
- Graduate School of Biotechnology and Crop Biotech Institute, Kyung Hee University, Yongin 17104,
Korea
| | - Yu-Jin Kim
- Graduate School of Biotechnology and Crop Biotech Institute, Kyung Hee University, Yongin 17104,
Korea
- Joint International Research Laboratory of Metabolic and Developmental Sciences, State Key Laboratory of Hybrid Rice, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai 200240,
China
| | - Dabing Zhang
- Joint International Research Laboratory of Metabolic and Developmental Sciences, State Key Laboratory of Hybrid Rice, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai 200240,
China
| | - Jong-Seong Jeon
- Graduate School of Biotechnology and Crop Biotech Institute, Kyung Hee University, Yongin 17104,
Korea
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Abstract
sugary enhancer1 (se1) is a naturally occurring mutant allele involved in starch metabolism in maize endosperm. It is a recessive modifier of sugary1 (su1) and commercially important in modern sweet corn breeding, but its molecular identity and mode of action remain unknown. Here, we developed a pair of near-isogenic lines, W822Gse (su1-ref/su1-ref se1/se1) and W822GSe (su1-ref/su1-ref Se1/Se1), that Mendelize the se1 phenotype in an su1-ref background. W822Gse kernels have lower starch and higher water soluble polysaccharide and sugars than W822GSe kernels. Using high-resolution genetic mapping, we found that wild-type Se1 is a gene Zm00001d007657 on chromosome 2 and a deletion of this gene causes the se1 phenotype. Comparative metabolic profiling of seed tissue between these 2 isolines revealed the remarkable difference in carbohydrate metabolism, with sucrose and maltose highly accumulated in the mutant. Se1 is predominantly expressed in the endosperm, with low expression in leaf and root tissues. Differential expression analysis identified genes enriched in both starch biosynthesis and degradation processes, indicating a pleiotropic regulatory effect of se1 Repressed expression of Se1 and Su1 in RNA interference-mediated transgenic maize validates that deletion of the gene identified as Se1 is a true causal gene responsible for the se1 phenotype. The findings contribute to our understanding of starch metabolism in cereal crops.
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Li ZQ, Xing W, Luo P, Zhang FJ, Jin XL, Zhang MH. Comparative transcriptome analysis of Rosa chinensis 'Slater's crimson China' provides insights into the crucial factors and signaling pathways in heat stress response. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2019; 142:312-331. [PMID: 31352248 DOI: 10.1016/j.plaphy.2019.07.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/08/2019] [Revised: 06/30/2019] [Accepted: 07/01/2019] [Indexed: 06/10/2023]
Abstract
Heat stress limits the growth of roses and adversely affects the yield and the quality of the rose cut-flowers. To investigate the heat stress response (HSR) mechanisms of rose, we compared the transcriptome profiling generated from Rosa chinensis 'Slater's crimson China' exposed to heat stress for five different time duration (0, 0.5, 2, 6, 12 h). Overall, 6175 differentially expressed genes (DGEs) were identified and exhibited different temporal expression patterns. Up-regulated genes related to chaperone-mediated protein folding, signal transduction and ROS scavenging were rapidly induced after 0.5-2 h of heat treatment, which provides evidence for the early adjustments of heat stress response in R. chinensis. While the down-regulated genes related to light reaction, sucrose biosynthesis, starch biosynthesis and cell wall biosynthesis were identified after as short as 6 h of heat stress, which indicated the ongoing negative effects on the physiology of R. chinensis. Using weighted gene co-expression network analysis, we found that different heat stress stages could be delineated by several modules. Based on integrating the transcription factors with upstream enriched DNA motifs of co-expressed genes in these modules, the gene regulation networks were predicted and several regulators of HSR were identified. Of particular importance was the discovery of the module associated with rapid sensing and signal transduction, in which numerous co-expressed genes related to chaperones, Ca2+ signaling pathways and transcription factors were identified. The results of this study provided an important resource for further dissecting the role of candidate genes governing the transcriptional regulatory network of HSR in Rose.
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Affiliation(s)
- Ze Qing Li
- College of Landscape Architecture, Central South University of Forestry and Technology, Changsha, 410004, Hunan, China
| | - Wen Xing
- College of Landscape Architecture, Central South University of Forestry and Technology, Changsha, 410004, Hunan, China.
| | - Ping Luo
- Zhejiang Agriculture and Forestry University, Hangzhou, 311300, Zhejiang, China
| | - Fang Jing Zhang
- College of Landscape Architecture, Central South University of Forestry and Technology, Changsha, 410004, Hunan, China
| | - Xiao Ling Jin
- College of Landscape Architecture, Central South University of Forestry and Technology, Changsha, 410004, Hunan, China
| | - Min Huan Zhang
- College of Landscape Architecture, Central South University of Forestry and Technology, Changsha, 410004, Hunan, China
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Cordenunsi-Lysenko BR, Nascimento JRO, Castro-Alves VC, Purgatto E, Fabi JP, Peroni-Okyta FHG. The Starch Is (Not) Just Another Brick in the Wall: The Primary Metabolism of Sugars During Banana Ripening. FRONTIERS IN PLANT SCIENCE 2019; 10:391. [PMID: 31001305 PMCID: PMC6454214 DOI: 10.3389/fpls.2019.00391] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/05/2019] [Accepted: 03/14/2019] [Indexed: 05/25/2023]
Abstract
The monocot banana fruit is one of the most important crops worldwide. As a typical climacteric fruit, the harvest of commercial bananas usually occurs when the fruit is physiologically mature but unripe. The universal treatment of green bananas with ethylene or ethylene-releasing compounds in order to accelerate and standardize the ripening of a bunch of bananas mimics natural maturation after increasing the exogenous production of ethylene. The trigger of autocatalytic ethylene production regulated by a dual positive feedback loop circuit derived from a NAC gene and three MADS genes results in metabolic processes that induce changes in the primary metabolism of bananas. These changes include pulp softening and sweetening which are sensorial attributes that determine banana postharvest quality. During fruit development, bananas accumulate large amounts of starch (between 15 and 35% w/w of their fresh weight, depending on the cultivar). Pulp softening and sweetening during banana ripening are attributed not only to changes in the activities of cell wall hydrolases but also to starch-to-sugar metabolism. Therefore, starch granule erosion and disassembling are key events that lead bananas to reach their optimal postharvest quality. The knowledge of the mechanisms that regulate sugar primary metabolism during banana ripening is fundamental to reduce postharvest losses and improve final product quality, though. Recent studies have shown that ethylene-mediated regulation of starch-degrading enzymes at transcriptional and translational levels is crucial for sugar metabolism in banana ripening. Furthermore, the crosstalk between ethylene and other hormones including indole-3-acetic acid and abscisic acid also influences primary sugar metabolism. In this review, we will describe the state-of-the-art sugar primary metabolism in bananas and discuss the recent findings that shed light on the understanding of the molecular mechanisms involved in the regulation of this metabolism during fruit ripening.
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Affiliation(s)
- Beatriz Rosana Cordenunsi-Lysenko
- Department of Food Science and Experimental Nutrition, School of Pharmaceutical Sciences, University of São Paulo, São Paulo, Brazil
- Food Research Center (FoRC), Research, Innovation and Dissemination Centers, São Paulo Research Foundation (CEPID-FAPESP), São Paulo, Brazil
- Food and Nutrition Research Center (NAPAN), University of São Paulo, São Paulo, Brazil
| | - João Roberto Oliveira Nascimento
- Department of Food Science and Experimental Nutrition, School of Pharmaceutical Sciences, University of São Paulo, São Paulo, Brazil
- Food Research Center (FoRC), Research, Innovation and Dissemination Centers, São Paulo Research Foundation (CEPID-FAPESP), São Paulo, Brazil
- Food and Nutrition Research Center (NAPAN), University of São Paulo, São Paulo, Brazil
| | - Victor Costa Castro-Alves
- Department of Food Science and Experimental Nutrition, School of Pharmaceutical Sciences, University of São Paulo, São Paulo, Brazil
- Food Research Center (FoRC), Research, Innovation and Dissemination Centers, São Paulo Research Foundation (CEPID-FAPESP), São Paulo, Brazil
| | - Eduardo Purgatto
- Department of Food Science and Experimental Nutrition, School of Pharmaceutical Sciences, University of São Paulo, São Paulo, Brazil
- Food Research Center (FoRC), Research, Innovation and Dissemination Centers, São Paulo Research Foundation (CEPID-FAPESP), São Paulo, Brazil
- Food and Nutrition Research Center (NAPAN), University of São Paulo, São Paulo, Brazil
| | - João Paulo Fabi
- Department of Food Science and Experimental Nutrition, School of Pharmaceutical Sciences, University of São Paulo, São Paulo, Brazil
- Food Research Center (FoRC), Research, Innovation and Dissemination Centers, São Paulo Research Foundation (CEPID-FAPESP), São Paulo, Brazil
- Food and Nutrition Research Center (NAPAN), University of São Paulo, São Paulo, Brazil
| | - Fernanda Helena Gonçalves Peroni-Okyta
- Department of Food Science and Experimental Nutrition, School of Pharmaceutical Sciences, University of São Paulo, São Paulo, Brazil
- Food Research Center (FoRC), Research, Innovation and Dissemination Centers, São Paulo Research Foundation (CEPID-FAPESP), São Paulo, Brazil
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41
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Vinje MA, Walling JG, Henson CA, Duke SH. Comparative gene expression analysis of the β-amylase and hordein gene families in the developing barley grain. Gene 2019; 693:127-136. [DOI: 10.1016/j.gene.2018.12.041] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2018] [Revised: 11/29/2018] [Accepted: 12/14/2018] [Indexed: 11/16/2022]
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42
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New insights into the origin and evolution of α-amylase genes in green plants. Sci Rep 2019; 9:4929. [PMID: 30894656 PMCID: PMC6426938 DOI: 10.1038/s41598-019-41420-w] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2018] [Accepted: 10/05/2018] [Indexed: 01/16/2023] Open
Abstract
Gene duplication is a source of genetic materials and evolutionary changes, and has been associated with gene family expansion. Functional divergence of duplicated genes is strongly directed by natural selections such as organism diversification and novel feature acquisition. We show that, plant α-amylase gene family (AMY) is comprised of six subfamilies (AMY1-AMY6) that fell into two ancient phylogenetic lineages (AMY3 and AMY4). Both AMY1 and AMY2 are grass-specific and share a single-copy ancestor, which is derived from grass AMY3 genes that have undergone massive tandem and whole-genome duplications during evolution. Ancestral features of AMY4 and AMY5/AMY6 genes have been retained among four green algal sequences (Chrein_08.g362450, Vocart_0021s0194, Dusali_0430s00012 and Monegl_16464), suggesting a gene duplication event following Chlorophyceae diversification. The observed horizontal gene transfers between plant and bacterial AMYs, and chromosomal locations of AMY3 and AMY4 genes in the most ancestral green body (C. reinhardtii), provide evidences for the monophyletic origin of plant AMYs. Despite subfamily-specific sequence divergence driven by natural selections, the active site and SBS1 are well-conserved across different AMY isoforms. The differentiated electrostatic potentials and hydrogen bands-forming residue polymorphisms, further imply variable digestive abilities for a broad substrates in particular tissues or subcellular localizations.
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Ju L, Deng G, Liang J, Zhang H, Li Q, Pan Z, Yu M, Long H. Structural organization and functional divergence of high isoelectric point α-amylase genes in bread wheat (Triticum aestivum L.) and barley (Hordeum vulgare L.). BMC Genet 2019; 20:25. [PMID: 30845909 PMCID: PMC6404323 DOI: 10.1186/s12863-019-0732-1] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2018] [Accepted: 02/26/2019] [Indexed: 12/18/2022] Open
Abstract
BACKGROUND High isoelectric point α-amylase genes (Amy1) play major roles during cereal seed germination, and are associated with unacceptable high residual α-amylase activities in ripe wheat grains. However, in wheat and barley, due to extremely high homology of duplicated copies, and large and complex genome background, the knowledge on this multigene family is limited. RESULTS In the present work, we identified a total of 41 Amy1 genes among 13 investigated grasses. By using genomic resources and experimental validation, the exact copy numbers and chromosomal locations in wheat and barley were determined. Phylogenetic and syntenic analyses revealed tandem gene duplication and chromosomal rearrangement leading to separation of Amy1 into two distinct loci, Amy1θ and Amy1λ. The divergence of Amy1λ from Amy1θ was driven by adaptive selection pressures performed on two amino acids, Arg97 and Asn233 (P > 0.95*). The predicted protein structural alteration caused by substitution of Asp233Asn in the conserved starch binding surface site, and significantly expressional differentiation during seed germination and grain development provided evidence of functional divergence between Amy1θ and Amy1λ genes. We screened out candidate copies (TaAmy1-A1/A2 and TaAmy1-D1) associated with high residual α-amylase activities in ripe grains. Furthermore, we proposed an evolutionary model for expansion dynamics of Amy1 genes. CONCLUSIONS Our study provides comprehensive analyses of the Amy1 multigene family, and defines the fixation of two spatially structural Amy1 loci in wheat and barley. Potential functional divergence between them is reflected by their sequence features and expressional patterns, and driven by gene duplication, chromosome rearrangement and natural selections during gene family evolution. Furthermore, the discrimination of differentially effective copies during seed germination and/or grain development will provide guidance to manipulation of α-amylase activity in wheat and barley breeding for better yield and processing properties.
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Affiliation(s)
- Liangliang Ju
- Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu, 610041 China
- University of Chinese Academy of Sciences, Beijing, 100049 China
| | - Guangbing Deng
- Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu, 610041 China
| | - Junjun Liang
- Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu, 610041 China
| | - Haili Zhang
- Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu, 610041 China
| | - Qiao Li
- Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu, 610041 China
| | - Zhifen Pan
- Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu, 610041 China
| | - Maoqun Yu
- Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu, 610041 China
| | - Hai Long
- Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu, 610041 China
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Zhang R, Li C, Fu K, Li C, Li C. An improved method for studying whole sections of late developing wheat grain. Biotech Histochem 2018; 93:471-477. [PMID: 30403883 DOI: 10.1080/10520295.2017.1386802] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022] Open
Abstract
Whole sections are important for investigation in situ of the development of cell morphology and accumulation of storage substance in cereal kernels. We developed an improved, simple method to obtain good quality whole histological sections of wheat grains during mid- and late-stage (28 and 35 days post anthesis) grain filling. The wheat grains were fixed and dehydrated, cleared in chloroform for 3 days and infiltrated in paraffin at 55° C for 3 - 5 days. The infiltrated grains then were embedded in paraffin wax, softened using diethyl pyrocarbonate (DEPC) water before sectioning. After these treatments, the wheat grains can be sectioned easily at 10 - 25 μm while retaining the cellular structure and antigenicity. The cell structure, cell distribution, autofluorescence, starch accumulation and localization in situ of bam1, one of the genes encoding β-amylase transcripts in the sections of the late developing wheat grain were observed readily.
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Affiliation(s)
- R Zhang
- a College of Agriculture, Shihezi University/The Key Laboratory of Oasis Eco-agriculture, Xinjiang Production and Construction Group , Shihezi Xinjiang , China
| | - C Li
- a College of Agriculture, Shihezi University/The Key Laboratory of Oasis Eco-agriculture, Xinjiang Production and Construction Group , Shihezi Xinjiang , China
| | - K Fu
- a College of Agriculture, Shihezi University/The Key Laboratory of Oasis Eco-agriculture, Xinjiang Production and Construction Group , Shihezi Xinjiang , China
| | - C Li
- a College of Agriculture, Shihezi University/The Key Laboratory of Oasis Eco-agriculture, Xinjiang Production and Construction Group , Shihezi Xinjiang , China
| | - C Li
- a College of Agriculture, Shihezi University/The Key Laboratory of Oasis Eco-agriculture, Xinjiang Production and Construction Group , Shihezi Xinjiang , China
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Goren A, Ashlock D, Tetlow IJ. Starch formation inside plastids of higher plants. PROTOPLASMA 2018; 255:1855-1876. [PMID: 29774409 DOI: 10.1007/s00709-018-1259-4] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2018] [Accepted: 05/03/2018] [Indexed: 05/09/2023]
Abstract
Starch is a water-insoluble polyglucan synthesized inside the plastid stroma within plant cells, serving a crucial role in the carbon budget of the whole plant by acting as a short-term and long-term store of energy. The highly complex, hierarchical structure of the starch granule arises from the actions of a large suite of enzyme activities, in addition to physicochemical self-assembly mechanisms. This review outlines current knowledge of the starch biosynthetic pathway operating in plant cells in relation to the micro- and macro-structures of the starch granule. We highlight the gaps in our knowledge, in particular, the relationship between enzyme function and operation at the molecular level and the formation of the final, macroscopic architecture of the granule.
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Affiliation(s)
- Asena Goren
- Department of Mathematics and Statistics, University of Guelph, Guelph, ON, N1G 2W1, Canada
| | - Daniel Ashlock
- Department of Mathematics and Statistics, University of Guelph, Guelph, ON, N1G 2W1, Canada
| | - Ian J Tetlow
- Department of Molecular and Cellular Biology, College of Biological Sciences, University of Guelph, Guelph, ON, N1G 2W1, Canada.
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Noronha H, Silva A, Dai Z, Gallusci P, Rombolà AD, Delrot S, Gerós H. A molecular perspective on starch metabolism in woody tissues. PLANTA 2018; 248:559-568. [PMID: 30022278 PMCID: PMC6096779 DOI: 10.1007/s00425-018-2954-2] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2018] [Accepted: 07/11/2018] [Indexed: 05/20/2023]
Abstract
MAIN CONCLUSION The elucidation of the molecular mechanisms of starch synthesis and mobilization in perennial woody tissues is of the utmost scientific and agricultural importance. Starch is the main carbohydrate reserve in plants and is fundamental in human nutrition and several industrial processes. In leaves, starch accumulated during the day is degraded throughout the night and the resulting sugars, glucose and maltose, are exported to the cytosol by the specialized transmembrane translocators pGT and MEX, respectively. Nevertheless, the degradation of the starch granule is a complex process not completely elucidated. While the mechanisms of starch mobilization during germination in the dead endosperm of cereal seeds are well described, the molecular and biochemical mechanisms involved in starch storage in the heterotrophic tissues of woody plants and its utilization in spring and winter are still puzzling. It is known that some biochemical steps of starch synthesis are conserved in heterotrophic tissues and in the leaves, but some aspects are particular to sink organs. From an agronomic standpoint, the knowledge on starch storage and mobilization in woody tissues is pivotal to understand (and to optimize) some common practices in the field that modify source-sink relationships, such as pruning and defoliation. Soluble sugars resulting from starch are also pivotal to cold adaptation, and in several fruits, such as banana and kiwifruit, starch may provide soluble sugars during ripening. In this review, we explore the recent advances on the molecular mechanisms and regulations involved in starch synthesis and mobilization, with a focus on perennial woody tissues.
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Affiliation(s)
- Henrique Noronha
- Centre of Molecular and Environmental Biology (CBMA), University of Minho, Braga, Portugal
| | - Angélica Silva
- Centre of Molecular and Environmental Biology (CBMA), University of Minho, Braga, Portugal
| | - Zhanwu Dai
- UMR EGFV, Bordeaux Science Agro, INRA, Université de Bordeaux, Villenave D'Ornon, France
| | - Philippe Gallusci
- UMR EGFV, Bordeaux Science Agro, INRA, Université de Bordeaux, Villenave D'Ornon, France
| | - Adamo D Rombolà
- Department of Agricultural Sciences, Alma Mater Studiorum, University of Bologna, Bologna, Italy
| | - Serge Delrot
- UMR EGFV, Bordeaux Science Agro, INRA, Université de Bordeaux, Villenave D'Ornon, France
| | - Hernâni Gerós
- Centre of Molecular and Environmental Biology (CBMA), University of Minho, Braga, Portugal.
- Centro de Investigação e de Tecnologias Agro-ambientais e Biológicas (CITAB), Vila Real, Portugal.
- Centre of Biological Engineering (CEB), University of Minho, Braga, Portugal.
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Lu J, Magnani E. Seed tissue and nutrient partitioning, a case for the nucellus. PLANT REPRODUCTION 2018; 31:309-317. [PMID: 29869727 PMCID: PMC6105262 DOI: 10.1007/s00497-018-0338-1] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/08/2018] [Accepted: 04/25/2018] [Indexed: 05/18/2023]
Abstract
Flowering plants display a large spectrum of seed architectures. The volume ratio of maternal versus zygotic seed tissues changes considerably among species and underlies different nutrient-storing strategies. Such diversity arose through the evolution of cell elimination programs that regulate the relative growth of one tissue over another to become the major storage compartment. The elimination of the nucellus maternal tissue is regulated by developmental programs that marked the origin of angiosperms and outlined the most ancient seed architectures. This review focuses on such a defining mechanism for seed evolution and discusses the role of nucellus development in seed tissues and nutrient partitioning at the light of novel discoveries on its molecular regulation.
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Affiliation(s)
- Jing Lu
- Institut Jean-Pierre Bourgin, INRA, AgroParisTech, CNRS, University of Paris-Saclay, Route de St-Cyr (RD10), 78026, Versailles Cedex, France
- Ecole Doctorale 567 Sciences du Végétal, University Paris-Sud, University of Paris-Saclay, Bat 360, 91405, Orsay Cedex, France
| | - Enrico Magnani
- Institut Jean-Pierre Bourgin, INRA, AgroParisTech, CNRS, University of Paris-Saclay, Route de St-Cyr (RD10), 78026, Versailles Cedex, France.
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Mahalingam R. Temporal Analyses of Barley Malting Stages Using Shotgun Proteomics. Proteomics 2018; 18:e1800025. [DOI: 10.1002/pmic.201800025] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2018] [Revised: 06/08/2018] [Indexed: 01/08/2023]
Affiliation(s)
- Ramamurthy Mahalingam
- United States Department of Agriculture; Agricultural Research Service; Cereal Crops Research Unit; 502 Walnut Street 53726 Madison WI USA
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Zhu GR, Yan X, Zhu D, Deng X, Wu JS, Xia J, Yan YM. Lysine acetylproteome profiling under water deficit reveals key acetylated proteins involved in wheat grain development and starch biosynthesis. J Proteomics 2018; 185:8-24. [DOI: 10.1016/j.jprot.2018.06.019] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2018] [Revised: 06/06/2018] [Accepted: 06/18/2018] [Indexed: 01/17/2023]
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Aubert MK, Coventry S, Shirley NJ, Betts NS, Würschum T, Burton RA, Tucker MR. Differences in hydrolytic enzyme activity accompany natural variation in mature aleurone morphology in barley (Hordeum vulgare L.). Sci Rep 2018; 8:11025. [PMID: 30038399 DOI: 10.1038/s41598-018-29068-29064] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2018] [Accepted: 07/04/2018] [Indexed: 05/27/2023] Open
Abstract
The aleurone is a critical component of the cereal seed and is located at the periphery of the starchy endosperm. During germination, the aleurone is responsible for releasing hydrolytic enzymes that degrade cell wall polysaccharides and starch granules, which is a key requirement for barley malt production. Inter- and intra-species differences in aleurone layer number have been identified in the cereals but the significance of this variation during seed development and germination remains unclear. In this study, natural variation in mature aleurone features was examined in a panel of 33 Hordeum vulgare (barley) genotypes. Differences were identified in the number of aleurone cell layers, the transverse thickness of the aleurone and the proportion of aleurone relative to starchy endosperm. In addition, variation was identified in the activity of hydrolytic enzymes that are associated with germination. Notably, activity of the free fraction of β-amylase (BMY), but not the bound fraction, was increased at grain maturity in barley varieties possessing more aleurone. Laser capture microdissection (LCM) and transcriptional profiling confirmed that HvBMY1 is the most abundant BMY gene in developing grain and accumulates in the aleurone during early stages of grain fill. The results reveal a link between molecular pathways influencing early aleurone development and increased levels of free β-amylase enzyme, potentially highlighting the aleurone as a repository of free β-amylase at grain maturity.
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Affiliation(s)
- Matthew K Aubert
- School of Agriculture, Food and Wine, Waite Research Institute, The University of Adelaide, Glen Osmond, SA, Australia
- Australian Research Council Centre of Excellence in Plant Cell Walls, the University of Adelaide, Adelaide, Australia
| | - Stewart Coventry
- School of Agriculture, Food and Wine, Waite Research Institute, The University of Adelaide, Glen Osmond, SA, Australia
| | - Neil J Shirley
- School of Agriculture, Food and Wine, Waite Research Institute, The University of Adelaide, Glen Osmond, SA, Australia
- Australian Research Council Centre of Excellence in Plant Cell Walls, the University of Adelaide, Adelaide, Australia
| | - Natalie S Betts
- School of Agriculture, Food and Wine, Waite Research Institute, The University of Adelaide, Glen Osmond, SA, Australia
| | - Tobias Würschum
- State Plant Breeding Institute, University of Hohenheim, Stuttgart, Germany
| | - Rachel A Burton
- Australian Research Council Centre of Excellence in Plant Cell Walls, the University of Adelaide, Adelaide, Australia
| | - Matthew R Tucker
- School of Agriculture, Food and Wine, Waite Research Institute, The University of Adelaide, Glen Osmond, SA, Australia.
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