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Baker L, Grewal S, Yang CY, Hubbart-Edwards S, Scholefield D, Ashling S, Burridge AJ, Przewieslik-Allen AM, Wilkinson PA, King IP, King J. Exploiting the genome of Thinopyrum elongatum to expand the gene pool of hexaploid wheat. TAG. THEORETICAL AND APPLIED GENETICS. THEORETISCHE UND ANGEWANDTE GENETIK 2020; 133:2213-2226. [PMID: 32313991 PMCID: PMC7311493 DOI: 10.1007/s00122-020-03591-3] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/29/2019] [Accepted: 03/31/2020] [Indexed: 05/23/2023]
Abstract
One hundred and thirty four introgressions from Thinopyrum elongatum have been transferred into a wheat background and were characterised using 263 SNP markers. Species within the genus Thinopyrum have been shown to carry genetic variation for a very wide range of traits including biotic and abiotic stresses and quality. Research has shown that one of the species within this genus, Th. elongatum, has a close relationship with the genomes of wheat making it a highly suitable candidate to expand the gene pool of wheat. Homoeologous recombination, in the absence of the Ph1 gene, has been exploited to transfer an estimated 134 introgressions from Th. elongatum into a hexaploid wheat background. The introgressions were detected and characterised using 263 single nucleotide polymorphism markers from a 35 K Axiom® Wheat-Relative Genotyping Array, spread across seven linkage groups and validated using genomic in situ hybridisation. The genetic map had a total length of 187.8 cM and the average chromosome length was 26.8 cM. Comparative analyses of the genetic map of Th. elongatum and the physical map of hexaploid wheat confirmed previous work that indicated good synteny at the macro-level, although Th. elongatum does not contain the 4A/5A/7B translocation found in wheat.
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Affiliation(s)
- Lauren Baker
- School of Biosciences, The University of Nottingham, Sutton Bonington Campus, Loughborough, Leicestershire, LE12 5RD, UK
| | - Surbhi Grewal
- School of Biosciences, The University of Nottingham, Sutton Bonington Campus, Loughborough, Leicestershire, LE12 5RD, UK
| | - Cai-Yun Yang
- School of Biosciences, The University of Nottingham, Sutton Bonington Campus, Loughborough, Leicestershire, LE12 5RD, UK
| | - Stella Hubbart-Edwards
- School of Biosciences, The University of Nottingham, Sutton Bonington Campus, Loughborough, Leicestershire, LE12 5RD, UK
| | - Duncan Scholefield
- School of Biosciences, The University of Nottingham, Sutton Bonington Campus, Loughborough, Leicestershire, LE12 5RD, UK
| | - Stephen Ashling
- School of Biosciences, The University of Nottingham, Sutton Bonington Campus, Loughborough, Leicestershire, LE12 5RD, UK
| | - Amanda J Burridge
- School of Biological Sciences, University of Bristol, Bristol, BS8 1TQ, UK
| | | | - Paul A Wilkinson
- School of Biological Sciences, University of Bristol, Bristol, BS8 1TQ, UK
| | - Ian P King
- School of Biosciences, The University of Nottingham, Sutton Bonington Campus, Loughborough, Leicestershire, LE12 5RD, UK
| | - Julie King
- School of Biosciences, The University of Nottingham, Sutton Bonington Campus, Loughborough, Leicestershire, LE12 5RD, UK.
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Song L, Zhao H, Zhang Z, Zhang S, Liu J, Zhang W, Zhang N, Ji J, Li L, Li J. Molecular Cytogenetic Identification of Wheat- Aegilops Biuncialis 5M b Disomic Addition Line with Tenacious and Black Glumes. Int J Mol Sci 2020; 21:E4053. [PMID: 32517065 PMCID: PMC7312955 DOI: 10.3390/ijms21114053] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2019] [Revised: 05/23/2020] [Accepted: 06/03/2020] [Indexed: 12/02/2022] Open
Abstract
Production of wheat-alien disomic addition lines is of great value to the exploitation and utilization of elite genes originated from related species to wheat. In this study, a novel wheat-Aegilops biuncialis 5Mb disomic addition line WA317 was characterized by in situ hybridization (ISH) and specific-locus amplified fragment sequencing (SLAF-seq) markers. Compared to its parent Chinese Spring (CS), the glumes of WA317 had black color and were difficult to remove after harvesting, suggesting chromosome 5Mb carried gene(s) related to glume development and Triticeae domestication process. A total of 242 Ae. biuncialis SLAF-based markers (298 amplified patterns) were developed and further divided into four categories by Ae. biuncialis Y17, Ae. umbellulata Y139 and Ae. comosa Y258, including 172 markers amplifying the same bands of U and M genome, six and 102 markers amplifying U-specific and M-specific bands, respectively and eighteen markers amplifying specific bands in Y17. Among them, 45 markers had the specific amplifications in WA317 and were 5Mb specific markers. Taken together, line WA317 with tenacious and black glumes should serve as the foundation for understanding of the Triticeae domestication process and further exploitation of primitive alleles for wheat improvement. Ae. biuncialis SLAF-based markers can be used for studying syntenic relationships between U and M genomes as well as rapid tracking of U and M chromosomal segments in wheat background.
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Affiliation(s)
- Liqiang Song
- Center for Agricultural Resources Research, Institute of Genetics and Developmental Biology, The Innovative Academy of Seed Design, Chinese Academy of Sciences, Shijiazhuang 050022, China; (L.S.); (S.Z.); (J.L.); (W.Z.); (N.Z.); (J.J.)
- State Key Laboratory of Plant Cell and Chromosomal Engineering, Chinese Academy of Sciences, Beijing 100101, China
| | - Hui Zhao
- College of Bioscience and Bioengineering, Hebei University of Science and Technology, Shijiazhuang 050018, China;
| | - Zhi Zhang
- Institute of Crop Science, Chinese Academy of Agricultural Sciences, Beijing 100081, China; (Z.Z.); (L.L.)
| | - Shuai Zhang
- Center for Agricultural Resources Research, Institute of Genetics and Developmental Biology, The Innovative Academy of Seed Design, Chinese Academy of Sciences, Shijiazhuang 050022, China; (L.S.); (S.Z.); (J.L.); (W.Z.); (N.Z.); (J.J.)
| | - Jiajia Liu
- Center for Agricultural Resources Research, Institute of Genetics and Developmental Biology, The Innovative Academy of Seed Design, Chinese Academy of Sciences, Shijiazhuang 050022, China; (L.S.); (S.Z.); (J.L.); (W.Z.); (N.Z.); (J.J.)
| | - Wei Zhang
- Center for Agricultural Resources Research, Institute of Genetics and Developmental Biology, The Innovative Academy of Seed Design, Chinese Academy of Sciences, Shijiazhuang 050022, China; (L.S.); (S.Z.); (J.L.); (W.Z.); (N.Z.); (J.J.)
| | - Na Zhang
- Center for Agricultural Resources Research, Institute of Genetics and Developmental Biology, The Innovative Academy of Seed Design, Chinese Academy of Sciences, Shijiazhuang 050022, China; (L.S.); (S.Z.); (J.L.); (W.Z.); (N.Z.); (J.J.)
- State Key Laboratory of Plant Cell and Chromosomal Engineering, Chinese Academy of Sciences, Beijing 100101, China
| | - Jun Ji
- Center for Agricultural Resources Research, Institute of Genetics and Developmental Biology, The Innovative Academy of Seed Design, Chinese Academy of Sciences, Shijiazhuang 050022, China; (L.S.); (S.Z.); (J.L.); (W.Z.); (N.Z.); (J.J.)
- State Key Laboratory of Plant Cell and Chromosomal Engineering, Chinese Academy of Sciences, Beijing 100101, China
| | - Lihui Li
- Institute of Crop Science, Chinese Academy of Agricultural Sciences, Beijing 100081, China; (Z.Z.); (L.L.)
| | - Junming Li
- Center for Agricultural Resources Research, Institute of Genetics and Developmental Biology, The Innovative Academy of Seed Design, Chinese Academy of Sciences, Shijiazhuang 050022, China; (L.S.); (S.Z.); (J.L.); (W.Z.); (N.Z.); (J.J.)
- State Key Laboratory of Plant Cell and Chromosomal Engineering, Chinese Academy of Sciences, Beijing 100101, China
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Terletskaya NV, Shcherban AB, Nesterov MA, Perfil’ev RN, Salina EA, Altayeva NA, Blavachinskaya IV. Drought Stress Tolerance and Photosynthetic Activity of Alloplasmic Lines T. dicoccum x T. aestivum. Int J Mol Sci 2020; 21:E3356. [PMID: 32397492 PMCID: PMC7246993 DOI: 10.3390/ijms21093356] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2020] [Revised: 05/06/2020] [Accepted: 05/08/2020] [Indexed: 11/29/2022] Open
Abstract
Tetraploid species T. dicoccum Shuebl is a potential source of drought tolerance for cultivated wheat, including common wheat. This paper describes the genotyping of nine stable allolines isolated in the offspring from crossing of T. dicoccum x T. aestivum L. using 21 microsatellite (simple sequence repeats-SSR) markers and two cytoplasmic mitochondrial markers to orf256, rps19-p genes; evaluation of drought tolerance of allolines at different stages of ontogenesis (growth parameters, relative water content, quantum efficiency of Photosystem II, electron transport rate, energy dissipated in Photosystem II); and the study of drought tolerance regulator gene Dreb-1 with allele-specific PCR (AS-MARKER) and partial sequence analysis. Most allolines differ in genomic composition and T. dicoccum introgressions. Four allolines-D-b-05, D-d-05, D-d-05b, and D-41-05-revealed signs of drought tolerance of varying degrees. The more drought tolerant D-41-05 line was also characterized by Dreb-B1 allele introgression from T. dicoccum. A number of non-specific patterns and significant differences in allolines in regulation of physiological parameters in drought conditions is identified. Changes in photosynthetic activity in stress-drought are shown to reflect the level of drought tolerance of the forms studied. The contribution of different combinations of nuclear/cytoplasmic genome and alleles of Dreb-1 gene in allolines to the formation of stress tolerance and photosynthetic activity is discussed.
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Affiliation(s)
- Nina V. Terletskaya
- Department of Biodiversity and Biological Resources, Faculty of Biology and Biotechnology Al-Farabi Kazakh National University, Al-Farabi av., 71, Almaty 050040, Kazakhstan;
- Institute of Plant Biology and Biotechnology, Timiryazev str. 45, Almaty 050040, Kazakhstan;
| | - Andrey B. Shcherban
- Kurchatov Genomics Center, Institute of Cytology and Genetics SB RAS, Lavrentiev av., 10, 630090 Novosibirsk, Russia; (A.B.S.); (M.A.N.); (R.N.P.); (E.A.S.)
| | - Michail A. Nesterov
- Kurchatov Genomics Center, Institute of Cytology and Genetics SB RAS, Lavrentiev av., 10, 630090 Novosibirsk, Russia; (A.B.S.); (M.A.N.); (R.N.P.); (E.A.S.)
| | - Roman N. Perfil’ev
- Kurchatov Genomics Center, Institute of Cytology and Genetics SB RAS, Lavrentiev av., 10, 630090 Novosibirsk, Russia; (A.B.S.); (M.A.N.); (R.N.P.); (E.A.S.)
| | - Elena A. Salina
- Kurchatov Genomics Center, Institute of Cytology and Genetics SB RAS, Lavrentiev av., 10, 630090 Novosibirsk, Russia; (A.B.S.); (M.A.N.); (R.N.P.); (E.A.S.)
| | - Nazira A. Altayeva
- Institute of Plant Biology and Biotechnology, Timiryazev str. 45, Almaty 050040, Kazakhstan;
| | - Irina V. Blavachinskaya
- Department of Biodiversity and Biological Resources, Faculty of Biology and Biotechnology Al-Farabi Kazakh National University, Al-Farabi av., 71, Almaty 050040, Kazakhstan;
- Central Laboratory for Biocontrol, Certification and Preclinical Trials, Al-Farabi av., 93, Almaty 050040, Kazakhstan
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Tretyakova IN, Rogozhin EA, Pak ME, Petukhova IA, Shuklina AS, Pahomova AP, Sadykova VS. Use of Plant Antimicrobial Peptides in in vitro Embryogenic Cultures of Larix sibirica. BIOL BULL+ 2020. [DOI: 10.1134/s1062359020030097] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Han G, Liu S, Jin Y, Jia M, Ma P, Liu H, Wang J, An D. Scale development and utilization of universal PCR-based and high-throughput KASP markers specific for chromosome arms of rye (Secale cereale L.). BMC Genomics 2020; 21:206. [PMID: 32131733 PMCID: PMC7057559 DOI: 10.1186/s12864-020-6624-y] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2019] [Accepted: 02/25/2020] [Indexed: 02/01/2023] Open
Abstract
Background Rye (Secale cereale L., 2n = 2x = 14, RR), a relative of common wheat, is a large gene resource pool for wheat improvement. Accurate and convenient identification of the rye chromatin in wheat background will facilitate the transfer and utilization of elite genes derived from rye in wheat breeding. Results In the present study, five rye cultivars including Imperial, German White, Jingzhouheimai, Baili and Guyuan were sequenced by specific-locus amplified fragment sequencing (SLAF-seq) to develop large-scale rye-specific markers. Based on SLAF-seq and bioinformatics analyses, a total of 404 universal PCR-based and a whole set of Kompetitive allele-specific PCR (KASP) markers specific for the 14 individual rye chromosome arms were developed and validated. Additionally, two KASP markers specific for 1RS and 2RL were successfully applied in the detection of 1RS translocations in a natural population and 2RL chromosome arms in wheat-rye derived progenies that conferred adult resistance to powdery mildew. Conclusion The 404 PCR-based markers and 14 KASP markers specific for the 14 individual rye chromosome arms developed in this study can enrich the marker densities for gene mapping and accelerate the utilization of rye-derived genes in wheat improvement. Especially, the KASP markers achieved high-throughput and accurate detection of rye chromatin in wheat background, thus can be efficiently used in marker-assisted selection (MAS). Besides, the strategy of rye-specific PCR-based markers converting into KASP markers was high-efficient and low-cost, which will facilitate the tracing of alien genes, and can also be referred for other wheat relatives.
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Affiliation(s)
- Guohao Han
- Center for Agricultural Resources Research, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Shijiazhuang, 050021, Hebei, China.,University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Shiyu Liu
- Center for Agricultural Resources Research, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Shijiazhuang, 050021, Hebei, China.,University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Yuli Jin
- Center for Agricultural Resources Research, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Shijiazhuang, 050021, Hebei, China
| | - Mengshu Jia
- School of Life Sciences, Yantai University, Yantai, 264005, Shandong, China
| | - Pengtao Ma
- Center for Agricultural Resources Research, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Shijiazhuang, 050021, Hebei, China.,School of Life Sciences, Yantai University, Yantai, 264005, Shandong, China
| | - Hong Liu
- Center for Agricultural Resources Research, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Shijiazhuang, 050021, Hebei, China
| | - Jing Wang
- Center for Agricultural Resources Research, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Shijiazhuang, 050021, Hebei, China
| | - Diaoguo An
- Center for Agricultural Resources Research, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Shijiazhuang, 050021, Hebei, China. .,The Innovative Academy of Seed Design, Chinese Academy of Sciences, Beijing, China.
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56
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Kreszies T, Eggels S, Kreszies V, Osthoff A, Shellakkutti N, Baldauf JA, Zeisler-Diehl VV, Hochholdinger F, Ranathunge K, Schreiber L. Seminal roots of wild and cultivated barley differentially respond to osmotic stress in gene expression, suberization, and hydraulic conductivity. PLANT, CELL & ENVIRONMENT 2020; 43:344-357. [PMID: 31762057 DOI: 10.1111/pce.13675] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2019] [Revised: 10/23/2019] [Accepted: 11/03/2019] [Indexed: 05/13/2023]
Abstract
Wild barley, Hordeum vulgare spp. spontaneum, has a wider genetic diversity than its cultivated progeny, Hordeum vulgare spp. vulgare. Osmotic stress leads to a series of different responses in wild barley seminal roots, ranging from no changes in suberization to enhanced endodermal suberization of certain zones and the formation of a suberized exodermis, which was not observed in the modern cultivars studied so far. Further, as a response to osmotic stress, the hydraulic conductivity of roots was not affected in wild barley, but it was 2.5-fold reduced in cultivated barley. In both subspecies, osmotic adjustment by increasing proline concentration and decreasing osmotic potential in roots was observed. RNA-sequencing indicated that the regulation of suberin biosynthesis and water transport via aquaporins were different between wild and cultivated barley. These results indicate that wild barley uses different strategies to cope with osmotic stress compared with cultivated barley. Thus, it seems that wild barley is better adapted to cope with osmotic stress by maintaining a significantly higher hydraulic conductivity of roots during water deficit.
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Affiliation(s)
- Tino Kreszies
- Department of Ecophysiology, Institute of Cellular and Molecular Botany, University of Bonn, Bonn, 53115, Germany
| | - Stella Eggels
- Department of Ecophysiology, Institute of Cellular and Molecular Botany, University of Bonn, Bonn, 53115, Germany
- Plant Breeding, TUM School of Life Sciences Weihenstephan, Technical University of Munich, Munich, 85354, Germany
| | - Victoria Kreszies
- Department of Ecophysiology, Institute of Cellular and Molecular Botany, University of Bonn, Bonn, 53115, Germany
| | - Alina Osthoff
- Crop Functional Genomics, Institute of Crop Science and Resource Conservation (INRES), University of Bonn, Bonn, 53113, Germany
| | - Nandhini Shellakkutti
- Department of Ecophysiology, Institute of Cellular and Molecular Botany, University of Bonn, Bonn, 53115, Germany
| | - Jutta A Baldauf
- Crop Functional Genomics, Institute of Crop Science and Resource Conservation (INRES), University of Bonn, Bonn, 53113, Germany
| | - Viktoria V Zeisler-Diehl
- Department of Ecophysiology, Institute of Cellular and Molecular Botany, University of Bonn, Bonn, 53115, Germany
| | - Frank Hochholdinger
- Crop Functional Genomics, Institute of Crop Science and Resource Conservation (INRES), University of Bonn, Bonn, 53113, Germany
| | - Kosala Ranathunge
- School of Biological Sciences, Faculty of Science, University of Western Australia, Perth, 6009, Australia
| | - Lukas Schreiber
- Department of Ecophysiology, Institute of Cellular and Molecular Botany, University of Bonn, Bonn, 53115, Germany
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Miransari M, Smith D. Sustainable wheat ( Triticum aestivum L.) production in saline fields: a review. Crit Rev Biotechnol 2019; 39:999-1014. [PMID: 31448647 DOI: 10.1080/07388551.2019.1654973] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2019] [Revised: 07/03/2019] [Accepted: 07/24/2019] [Indexed: 10/26/2022]
Abstract
A large part of global agricultural fields, including the wheat (Triticum aestivum L.) ones, are subjected to various stresses including salinity. Given the increasing world population, finding methods and strategies that can alleviate salinity stress on crop yield production is of outmost importance. The presented review has consulted more than 400 articles related to the clean and sustainable production of wheat in saline fields affected by biological, environmental, economical, and social parameters including the important issue of climate change (global warming). The negative effects of salt stress on plant growth and the techniques, which have been so far detected to alleviate salinity stress on wheat growth have been analyzed and presented. The naturally tolerant species of wheat can use a range of mechanisms to alleviate salinity stress including sodium exclusion, potassium retention, and osmoregulation. However, the following can be considered as the most important techniques to enhance wheat tolerance under stress: (1) the biotechnological (crop breeding), biological (soil microbes), and biochemical (seed priming) methods, (2) the use of naturally tolerant genotypes, and (3) their combined use. The proper handling of irrigation water is also an important subject, which must be considered when planting wheat in saline fields. In conclusion, the sustainable and cleaner production of wheat under salt stress is determined by a combination of different parameters including the biotechnological techniques, which if handled properly, can enhance wheat production in saline fields.
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Affiliation(s)
- Mohammad Miransari
- Department of Book and Article, AbtinBerkeh Scientific Ltd. Company , Isfahan , Iran
| | - Donald Smith
- Department of Plant Science, Macdonald College of McGill University , Quebec , Canada
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Ivanizs L, Monostori I, Farkas A, Megyeri M, Mikó P, Türkösi E, Gaál E, Lenykó-Thegze A, Szőke-Pázsi K, Szakács É, Darkó É, Kiss T, Kilian A, Molnár I. Unlocking the Genetic Diversity and Population Structure of a Wild Gene Source of Wheat, Aegilops biuncialis Vis., and Its Relationship With the Heading Time. FRONTIERS IN PLANT SCIENCE 2019; 10:1531. [PMID: 31824545 PMCID: PMC6882925 DOI: 10.3389/fpls.2019.01531] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2019] [Accepted: 11/01/2019] [Indexed: 06/02/2023]
Abstract
Understanding the genetic diversity of Aegilops biuncialis, a valuable source of agronomical useful genes, may significantly facilitate the introgression breeding of wheat. The genetic diversity and population structure of 86 Ae. biuncialis genotypes were investigated by 32700 DArT markers with the simultaneous application of three statistical methods- neighbor-joining clustering, Principal Coordinate Analysis, and the Bayesian approach to classification. The collection of Ae. biuncialis accessions was divided into five groups that correlated well with their eco-geographic habitat: A (North Africa), B (mainly from Balkans), C (Kosovo and Near East), D (Turkey, Crimea, and Peloponnese), and E (Azerbaijan and the Levant region). The diversity between the Ae. biuncialis accessions for a phenological trait (heading time), which is of decisive importance in the adaptation of plants to different eco-geographical environments, was studied over 3 years. A comparison of the intraspecific variation in the heading time trait by means of analysis of variance and principal component analysis revealed four phenotypic categories showing association with the genetic structure and geographic distribution, except for minor differences. The detailed exploration of genetic and phenologic divergence provides an insight into the adaptation capacity of Ae. biuncialis, identifying promising genotypes that could be utilized for wheat improvement.
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Affiliation(s)
- László Ivanizs
- Agricultural Institute, Centre for Agricultural Research, Martonvásár, Hungary
| | - István Monostori
- Agricultural Institute, Centre for Agricultural Research, Martonvásár, Hungary
| | - András Farkas
- Agricultural Institute, Centre for Agricultural Research, Martonvásár, Hungary
| | - Mária Megyeri
- Agricultural Institute, Centre for Agricultural Research, Martonvásár, Hungary
| | - Péter Mikó
- Agricultural Institute, Centre for Agricultural Research, Martonvásár, Hungary
| | - Edina Türkösi
- Agricultural Institute, Centre for Agricultural Research, Martonvásár, Hungary
| | - Eszter Gaál
- Agricultural Institute, Centre for Agricultural Research, Martonvásár, Hungary
| | | | - Kitti Szőke-Pázsi
- Agricultural Institute, Centre for Agricultural Research, Martonvásár, Hungary
| | - Éva Szakács
- Agricultural Institute, Centre for Agricultural Research, Martonvásár, Hungary
| | - Éva Darkó
- Agricultural Institute, Centre for Agricultural Research, Martonvásár, Hungary
| | - Tibor Kiss
- Agricultural Institute, Centre for Agricultural Research, Martonvásár, Hungary
| | - Andrzej Kilian
- University of Canberra, Diversity Array Technologies, Canberra, ACT, Australia
| | - István Molnár
- Agricultural Institute, Centre for Agricultural Research, Martonvásár, Hungary
- Institute of Experimental Botany, Center of the Region Haná for Biotechnological and Agricultural Research, Olomouc, Czechia
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Li H, Dong Z, Ma C, Tian X, Xiang Z, Xia Q, Ma P, Liu W. Discovery of powdery mildew resistance gene candidates from Aegilops biuncialis chromosome 2Mb based on transcriptome sequencing. PLoS One 2019; 14:e0220089. [PMID: 31710598 PMCID: PMC6844473 DOI: 10.1371/journal.pone.0220089] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2019] [Accepted: 10/23/2019] [Indexed: 01/07/2023] Open
Abstract
Powdery mildew is one of the most widespread diseases of wheat. The development and deployment of resistant varieties are one of the most economical and effective methods to manage this disease. Our previous study showed that the gene(s) at 2Mb in Chinese Spring (CS)-Aegilops biuncialis 2Mb disomic addition line TA7733 conferred a high level of resistance to powdery mildew of wheat. In this study, resistance spectrum of TA7733 was assayed by using 15 Blumeria graminis f. sp. tritici (Bgt) isolates prevalent in different regions of China. The result indicated that TA7733 was highly resistant to all tested Bgt isolates and the gene(s) on chromosome 2Mb conferred broad-spectrum resistance to powdery mildew. In order to characterize mechanism of powdery mildew resistance by identifying candidates R-genes derived from Ae. biuncialis chromosome 2Mb and develop 2Mb-specific molecular markers, we performed RNA-seq analysis on TA7733 and CS. In total we identified 7,278 unigenes that showed specific expression in TA7733 pre and post Bgt-infection when compared to CS. Of these 7,278 unigenes, 295 were annotated as putative resistance (R) genes. Comparatively analysis of R-gene sequences from TA7733 and CS and integration CS Ref Seq v1.0 were used to develop R-gene specific primers. Of 295 R-genes we identified 53 R-genes were specific to 2Mb and could be involved in powdery mildew resistance. Functional annotation of majority of the 53 R-genes encoded nucleotide binding leucine rich repeat (NLR) protein. The broad-spectrum resistance to powdery mildew in TA7733 and availability of 2Mb-derived putative candidate R-gene specific molecular markers identified in this study will lay foundations for transferring powdery mildew resistance from 2Mb to common wheat by inducing CS-Ae. biuncialis homoeologous recombination. Our study also provides useful candidates for further isolation and cloning of powdery mildew resistance gene(s) from Ae. biuncialis chromosome 2Mb.
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Affiliation(s)
- Huanhuan Li
- College of Life Sciences, Henan Agricultural University, Zhengzhou, Henan Province, China
| | - Zhenjie Dong
- College of Life Sciences, Henan Agricultural University, Zhengzhou, Henan Province, China
| | - Chao Ma
- College of Life Sciences, Henan Agricultural University, Zhengzhou, Henan Province, China
| | - Xiubin Tian
- College of Life Sciences, Henan Agricultural University, Zhengzhou, Henan Province, China
| | - Zhiguo Xiang
- Wheat Research Center, Henan Academy of Agricultural Sciences, Zhengzhou, Henan Province, China
| | - Qing Xia
- College of Life Sciences, Henan Agricultural University, Zhengzhou, Henan Province, China
| | - Pengtao Ma
- College of Life Sciences, Yantai University, Yantai, Shandong Province, China
| | - Wenxuan Liu
- College of Life Sciences, Henan Agricultural University, Zhengzhou, Henan Province, China
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Genc Y, Taylor J, Lyons G, Li Y, Cheong J, Appelbee M, Oldach K, Sutton T. Bread Wheat With High Salinity and Sodicity Tolerance. FRONTIERS IN PLANT SCIENCE 2019; 10:1280. [PMID: 31695711 PMCID: PMC6817574 DOI: 10.3389/fpls.2019.01280] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/14/2019] [Accepted: 09/13/2019] [Indexed: 05/20/2023]
Abstract
Soil salinity and sodicity are major constraints to global cereal production, but breeding for tolerance has been slow. Narrow gene pools, over-emphasis on the sodium (Na+) exclusion mechanism, little attention to osmotic stress/tissue tolerance mechanism(s) in which accumulation of inorganic ions such as Na+ is implicated, and lack of a suitable screening method have impaired progress. The aims of this study were to discover novel genes for Na+ accumulation using genome-wide association studies, compare growth responses to salinity and sodicity in low-Na+ bread Westonia with Nax1 and Nax2 genes and high-Na+ bread wheat Baart-46, and evaluate growth responses to salinity and sodicity in bread wheats with varying leaf Na+ concentrations. The novel high-Na+ bread wheat germplasm, MW#293, had higher grain yield under salinity and sodicity, in absolute and relative terms, than the other bread wheat entries tested. Genes associated with high Na+ accumulation in bread wheat were identified, which may be involved in tissue tolerance/osmotic adjustment. As most modern bread wheats are efficient at excluding Na+, further reduction in plant Na+ is unlikely to provide agronomic benefit. The salinity and sodicity tolerant germplasm MW#293 provides an opportunity for the development of future salinity/sodicity tolerant bread wheat.
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Affiliation(s)
- Yusuf Genc
- South Australian Research and Development Institute, Adelaide, SA, Australia
- School of Agriculture, Food and Wine, University of Adelaide, Adelaide, SA, Australia
| | - Julian Taylor
- School of Agriculture, Food and Wine, University of Adelaide, Adelaide, SA, Australia
| | - Graham Lyons
- School of Agriculture, Food and Wine, University of Adelaide, Adelaide, SA, Australia
| | - Yongle Li
- School of Agriculture, Food and Wine, University of Adelaide, Adelaide, SA, Australia
| | - Judy Cheong
- South Australian Research and Development Institute, Adelaide, SA, Australia
| | | | - Klaus Oldach
- South Australian Research and Development Institute, Adelaide, SA, Australia
| | - Tim Sutton
- South Australian Research and Development Institute, Adelaide, SA, Australia
- School of Agriculture, Food and Wine, University of Adelaide, Adelaide, SA, Australia
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Lema M, Ali MY, Retuerto R. Domestication influences morphological and physiological responses to salinity in Brassica oleracea seedlings. AOB PLANTS 2019; 11:plz046. [PMID: 31579110 PMCID: PMC6757351 DOI: 10.1093/aobpla/plz046] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2018] [Accepted: 07/29/2019] [Indexed: 05/28/2023]
Abstract
Brassica oleracea cultivars include important vegetable and forage crops grown worldwide, whereas the wild counterpart occurs naturally on European sea cliffs. Domestication and selection processes have led to phenotypic and genetic divergence between domesticated plants and their wild ancestors that inhabit coastal areas and are exposed to saline conditions. Salinity is one of the most limiting factors for crop production. However, little is known about how salinity affects plants in relation to domestication of B. oleracea. The objective of this study was to determine the influence of domestication status (wild, landrace or cultivar) on the response of different B. oleracea crops to salinity, as measured by seed germination, plant growth, water content and mineral concentration parameters at the seedling stage. For this purpose, two independent pot experiments were conducted with six accessions of B. oleracea, including cabbage (group capitata) and kale (group acephala), in a growth chamber under controlled environmental conditions. In both taxonomic groups, differences in domestication status and salt stress significantly affected all major process such as germination, changes in dry matter, water relations and mineral uptake. In the acephala experiment, the domestication × salinity interaction significantly affected water content parameters and shoot Na+ allocation. At early stages of development, wild plants are more succulent than cultivated plants and have a higher capacity to maintain lower Na+ concentrations in their shoots in response to increasing levels of salinity. Different responses of domesticated and cultivated accessions in relation to these traits indicated a high level of natural variation in wild B. oleracea. Exclusion of Na+ from shoots and increasing succulence may enhance salt tolerance in B. oleracea exposed to extreme salinity in the long term. The wild germplasm can potentially be used to improve the salt tolerance of crops by the identification of useful genes and incorporation of these into salinity-sensitive cultivars.
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Affiliation(s)
- M Lema
- Department of Functional Biology, Faculty of Biology, University of Santiago de Compostela, Santiago de Compostela, Spain
| | - Md Y Ali
- Agrotechnology Discipline, Life Science School, Khulna University, Khulna, Bangladesh
| | - R Retuerto
- Department of Functional Biology, Faculty of Biology, University of Santiago de Compostela, Santiago de Compostela, Spain
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Dadshani S, Sharma RC, Baum M, Ogbonnaya FC, Léon J, Ballvora A. Multi-dimensional evaluation of response to salt stress in wheat. PLoS One 2019; 14:e0222659. [PMID: 31568491 PMCID: PMC6768486 DOI: 10.1371/journal.pone.0222659] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2019] [Accepted: 09/03/2019] [Indexed: 11/19/2022] Open
Abstract
Soil salinity is a major threat to crop production worldwide. The global climate change is further accelerating the process of soil salinization, particularly in dry areas of the world. Increasing genetic variability of currently used wheat varieties by introgression of exotic alleles/genes from related progenitors' species in breeding programs is an efficient approach to overcome limitations due to the absence of valuable genetic diversity in elite cultivars. Synthetic hexaploid wheat (SHW) is widely regarded as donor of favourable exotic alleles to improve tolerance against biotic and abiotic stresses such as salinity stress. In this study, synthetic backcross lines (SBLs) winter wheat population "Z86", derived from crosses involving synthetic hexaploid wheat Syn86L with German elite winter wheat cultivar Zentos, was evaluated for salinity tolerance at different developmental stages under controlled and field conditions in three growing seasons. High genetic variability was detected across the SBLs and their parents at various growth stages under controlled as well as under salt stress field trials. Greater performance of Zentos over Syn86L was detected at germination stage across all salt treatments and with respect to shoot dry weight (SDW) and root dry weight (RDW) at seedling stage. Whereas for the root length (RL) and the shoot length (SL) Syn86L surpassed the elite cultivar and most of the progenies. Our experiments revealed for almost all traits that some genotypes among the SBLs showed higher performance than their parents. Furthermore, positive transgressive segregations were detected among the SBLs for germination at high salinity levels, as well as for RDW and SDW at seedling stage. Therefore, the studied Z86 population is a suitable population for assessment of salinity stress on morphological and physiological traits at different plant growth stages. The identified SBLs provide a valuable source for genetic gain through recombination of superior alleles that can be directly applied in breeding programs for efficiently breeding cultivars with improved salinity tolerance and desired agronomic traits.
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Affiliation(s)
- Said Dadshani
- INRES Plant Breeding, Rheinische Friedrich-Wilhelms-University, Bonn, Germany
| | - Ram C. Sharma
- International Center for Agricultural Research in the Dry Areas (ICARDA), Tashkent, Uzbekistan
| | - Michael Baum
- International Center for Agricultural Research in the Dry Areas (ICARDA), Rabat, Morocco
| | | | - Jens Léon
- INRES Plant Breeding, Rheinische Friedrich-Wilhelms-University, Bonn, Germany
| | - Agim Ballvora
- INRES Plant Breeding, Rheinische Friedrich-Wilhelms-University, Bonn, Germany
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Dai F, Li A, Rao S, Chen J. Potassium Transporter LrKUP8 Is Essential for K + Preservation in Lycium ruthenicum, A Salt-Resistant Desert Shrub. Genes (Basel) 2019; 10:E600. [PMID: 31405002 PMCID: PMC6723441 DOI: 10.3390/genes10080600] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2019] [Revised: 07/29/2019] [Accepted: 08/07/2019] [Indexed: 11/16/2022] Open
Abstract
Salt stress is a major constraint for many crops and trees. A wild species of Goji named Lycium ruthenicum is an important economic halophyte in China and has an extremely high tolerance to salinity. L. ruthenicum grows in saline soil and is known as a potash-rich species. However, its salt adaptation strategies and ion balance mechanism remains poorly understood. Potassium (K+) is one of the essential macronutrients for plant growth and development. In this study, a putative salt stress-responsive gene encoding a HAK (high-affinity K+)/KUP (K+ uptake)/KT (K+ transporter) transporter was cloned and designated as LrKUP8. This gene belongs to the cluster II group of the KT/HAK/KUP family. The expression of LrKUP8 was strongly induced under high NaCl concentrations. The OE-LrKUP8 calli grew significantly better than the vector control calli under salt stress conditions. Further estimation by ion content and micro-electrode ion flux indicated a relative weaker K+ efflux in the OE-LrKUP8 calli than in the control. Thus, a key gene involved in K+ uptake under salt condition was functionally characterized using a newly established L. ruthenicum callus transformation system. The importance of K+ regulation in L. ruthenicum under salt tolerance was highlighted.
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Affiliation(s)
- Fengbin Dai
- College of Biological Sciences and technology, Beijing Forestry University, 35 Qinghua East Road, Beijing 100083, China
- National Engineering Laboratory for Tree Breeding, Beijing Forestry University, 35 Qinghua East Road, Beijing 100083, China
| | - Aijia Li
- College of Biological Sciences and technology, Beijing Forestry University, 35 Qinghua East Road, Beijing 100083, China
- National Engineering Laboratory for Tree Breeding, Beijing Forestry University, 35 Qinghua East Road, Beijing 100083, China
| | - Shupei Rao
- College of Biological Sciences and technology, Beijing Forestry University, 35 Qinghua East Road, Beijing 100083, China
- National Engineering Laboratory for Tree Breeding, Beijing Forestry University, 35 Qinghua East Road, Beijing 100083, China
| | - Jinhuan Chen
- College of Biological Sciences and technology, Beijing Forestry University, 35 Qinghua East Road, Beijing 100083, China.
- National Engineering Laboratory for Tree Breeding, Beijing Forestry University, 35 Qinghua East Road, Beijing 100083, China.
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Abstract
A major challenge of the Sustainable Development Goals linked to Agriculture, Food Security, and Nutrition, under the current global crop production paradigm, is that increasing crop yields often have negative environmental impacts. It is therefore urgent to develop and adopt optimal soil-improving cropping systems (SICS) that can allow us to decouple these system parameters. Soil salinization is a major environmental hazard that limits agricultural potential and is closely linked to agricultural mismanagement and water resources overexploitation, especially in arid climates. Here we review literature seeking to ameliorate the negative effect of soil salinization on crop productivity and conduct a global meta-analysis of 128 paired soil quality and yield observations from 30 studies. In this regard, we compared the effectivity of different SICS that aim to cope with soil salinization across 11 countries, in order to reveal those that are the most promising. The analysis shows that besides case-specific optimization of irrigation and drainage management, combinations of soil amendments, conditioners, and residue management can contribute to significant reductions of soil salinity while significantly increasing crop yields. These results highlight that conservation agriculture can also achieve the higher yields required for upscaling and sustaining crop production.
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65
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Xu Y, Sun FY, Ji C, Hu QW, Wang CY, Wu DX, Sun G. Nucleotide diversity patterns at the DREB1 transcriptional factor gene in the genome donor species of wheat (Triticum aestivum L). PLoS One 2019; 14:e0217081. [PMID: 31136598 PMCID: PMC6538315 DOI: 10.1371/journal.pone.0217081] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2019] [Accepted: 05/05/2019] [Indexed: 11/19/2022] Open
Abstract
Bread wheat (AABBDD) originated from the diploid progenitor Triticum urartu (AA), a relative of Aegilops speltoides (BB), and Ae. tauschii (DD). The DREB1 transcriptional factor plays key regulatory role in low-temperature tolerance. The modern breeding strategies resulted in serious decrease of the agricultural biodiversity, which led to a loss of elite genes underlying abiotic stress tolerance in crops. However, knowledge of this gene's natural diversity is largely unknown in the genome donor species of wheat. We characterized the dehydration response element binding protein 1 (DREB1) gene-diversity pattern in Ae. speltoides, Ae. tauschii, T. monococcum and T. urartu. The highest nucleotide diversity value was detected in Ae. speltoides, followed by Ae. tauschii and T. monococcum. The lowest nucleotide diversity value was observed in T. urartu. Nucleotide diversity and haplotype data might suggest no reduction of nucleotide diversity during T. monococcum domestication. Alignment of the 68 DREB1 sequences found a large-size (70 bp) insertion/deletion in the accession PI486264 of Ae. speltoides, which was different from the copy of sequences from other accessions of Ae. speltoides, suggesting a likely existence of two different ancestral Ae. speltoides forms. Implication of sequences variation of Ae. speltoides on origination of B genome in wheat was discussed.
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Affiliation(s)
- Yi Xu
- College of Agronomy, Anhui Agricultural University, Hefei, Anhui, China
| | - Fang-Yao Sun
- College of Agronomy, Anhui Agricultural University, Hefei, Anhui, China
| | - Chun Ji
- College of Agronomy, Anhui Agricultural University, Hefei, Anhui, China
| | - Quan-Wen Hu
- College of Agronomy, Anhui Agricultural University, Hefei, Anhui, China
| | - Cheng-Yu Wang
- College of Agronomy, Anhui Agricultural University, Hefei, Anhui, China
| | - De-Xiang Wu
- College of Agronomy, Anhui Agricultural University, Hefei, Anhui, China
| | - Genlou Sun
- College of Agronomy, Anhui Agricultural University, Hefei, Anhui, China
- Biology Department, Saint Mary’s University, Halifax, NS, Canada
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66
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Kishii M. An Update of Recent Use of Aegilops Species in Wheat Breeding. FRONTIERS IN PLANT SCIENCE 2019; 10:585. [PMID: 31143197 PMCID: PMC6521781 DOI: 10.3389/fpls.2019.00585] [Citation(s) in RCA: 58] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2019] [Accepted: 04/18/2019] [Indexed: 05/16/2023]
Abstract
Aegilops species have significantly contributed to wheat breeding despite the difficulties involved in the handling of wild species, such as crossability and incompatibility. A number of biotic resistance genes have been identified and incorporated into wheat varieties from Aegilops species, and this genus is also contributing toward improvement of complex traits such as yield and abiotic tolerance for drought and heat. The D genome diploid species of Aegilops tauschii has been utilized most often in wheat breeding programs. Other Aegilops species are more difficult to utilize in the breeding because of lower meiotic recombination frequencies; generally they can be utilized only after extensive and time-consuming procedures in the form of translocation/introgression lines. After the emergence of Ug99 stem rust and wheat blast threats, Aegilops species gathered more attention as a form of new resistance sources. This article aims to update recent progress on Aegilops species, as well as to cover new topics around their use in wheat breeding.
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Affiliation(s)
- Masahiro Kishii
- Global Wheat Program, International Maize and Wheat Improvement Center (CIMMYT), Texcoco, Mexico
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67
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Mirzaghaderi G, Mason AS. Broadening the bread wheat D genome. TAG. THEORETICAL AND APPLIED GENETICS. THEORETISCHE UND ANGEWANDTE GENETIK 2019; 132:1295-1307. [PMID: 30739154 DOI: 10.1007/s00122-019-03299-z] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/27/2018] [Accepted: 02/02/2019] [Indexed: 05/21/2023]
Abstract
Although Ae. tauschii has been extensively utilised for wheat breeding, the D-genome-containing allopolyploids have largely remained unexploited. In this review, we discuss approaches that can be used to exploit the D genomes of the different Aegilops species for the improvement of bread wheat. The D genome of allohexaploid bread wheat (Triticum aestivum, 2n = AABBDD) is the least diverse of the three wheat genomes and is unarguably less diverse than that of diploid progenitor Aegilops tauschii (2n = DD). Useful genetic variation and phenotypic traits also exist within each of the wheat group species containing a copy of the D genome: allopolyploid Aegilops species Ae. cylindrica (2n = DcDcCcCc), Ae. crassa 4x (2n = D1D1XcrXcr), Ae. crassa 6x (2n = D1D1XcrXcrDcrDcr), Ae. ventricosa (2n = DvDvNvNv), Ae. vavilovii (2n = D1D1XcrXcrSvSv) and Ae. juvenalis (2n = D1D1XcrXcrUjUj). Although Ae. tauschii has been extensively utilised for wheat breeding, the D-genome-containing allopolyploids have largely remained unexploited. Some of these D genomes appear to be modified relative to the bread wheat and Ae. tauschii D genomes, and others present in the allopolyploids may also contain useful variation as a result of adaptation to an allopolyploid, multi-genome environment. We summarise the genetic relationships, karyotypic variation and phenotypic traits known to be present in each of the D genome species that could be of relevance for bread wheat improvement and discuss approaches that can be used to exploit the D genomes of the different Aegilops species for the improvement of bread wheat. Better understanding of factors controlling chromosome inheritance and recombination in wheat group interspecific hybrids, as well as effective utilisation of new and developing genetics and genomics technologies, have great potential to improve the agronomic potential of the bread wheat D genome.
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Affiliation(s)
- Ghader Mirzaghaderi
- Department of Agronomy and Plant Breeding, Faculty of Agriculture, University of Kurdistan, P. O. Box 416, Sanandaj, Iran.
| | - Annaliese S Mason
- Department of Plant Breeding, Justus Liebig University, IFZ Research Centre for Biosystems, Land Use and Nutrition, Heinrich-Buff-Ring 26-32, Giessen, 35392, Germany
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68
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Przewieslik-Allen AM, Burridge AJ, Wilkinson PA, Winfield MO, Shaw DS, McAusland L, King J, King IP, Edwards KJ, Barker GLA. Developing a High-Throughput SNP-Based Marker System to Facilitate the Introgression of Traits From Aegilops Species Into Bread Wheat ( Triticum aestivum). FRONTIERS IN PLANT SCIENCE 2019; 9:1993. [PMID: 30733728 PMCID: PMC6354564 DOI: 10.3389/fpls.2018.01993] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/11/2018] [Accepted: 12/21/2018] [Indexed: 06/09/2023]
Abstract
The genus Aegilops contains a diverse collection of wild species exhibiting variation in geographical distribution, ecological adaptation, ploidy and genome organization. Aegilops is the most closely related genus to Triticum which includes cultivated wheat, a globally important crop that has a limited gene pool for modern breeding. Aegilops species are a potential future resource for wheat breeding for traits, such as adaptation to different ecological conditions and pest and disease resistance. This study describes the development and application of the first high-throughput genotyping platform specifically designed for screening wheat relative species. The platform was used to screen multiple accessions representing all species in the genus Aegilops. Firstly, the data was demonstrated to be useful for screening diversity and examining relationships within and between Aegilops species. Secondly, markers able to characterize and track introgressions from Aegilops species in hexaploid wheat were identified and validated using two different approaches.
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Affiliation(s)
| | | | | | | | - Daniel S. Shaw
- Life Sciences, University of Bristol, Bristol, United Kingdom
| | - Lorna McAusland
- Plant Sciences, Sutton Bonington Campus, Leicestershire, United Kingdom
| | - Julie King
- Plant Sciences, Sutton Bonington Campus, Leicestershire, United Kingdom
| | - Ian P. King
- Plant Sciences, Sutton Bonington Campus, Leicestershire, United Kingdom
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Kreszies T, Shellakkutti N, Osthoff A, Yu P, Baldauf JA, Zeisler‐Diehl VV, Ranathunge K, Hochholdinger F, Schreiber L. Osmotic stress enhances suberization of apoplastic barriers in barley seminal roots: analysis of chemical, transcriptomic and physiological responses. THE NEW PHYTOLOGIST 2019; 221:180-194. [PMID: 30055115 PMCID: PMC6586163 DOI: 10.1111/nph.15351] [Citation(s) in RCA: 63] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/29/2018] [Accepted: 06/18/2018] [Indexed: 05/08/2023]
Abstract
Barley (Hordeum vulgare) is more drought tolerant than other cereals, thus making it an excellent model for the study of the chemical, transcriptomic and physiological effects of water deficit. Roots are the first organ to sense soil water deficit. Therefore, we studied the response of barley seminal roots to different water potentials induced by polyethylene glycol (PEG) 8000. We investigated changes in anatomical parameters by histochemistry and microscopy, quantitative and qualitative changes in suberin composition by analytical chemistry, transcript changes by RNA-sequencing (RNA-Seq), and the radial water and solute movement of roots using a root pressure probe. In response to osmotic stress, genes in the suberin biosynthesis pathway were upregulated that correlated with increased suberin amounts in the endodermis and an overall reduction in hydraulic conductivity (Lpr ). In parallel, transcriptomic data indicated no or only weak effects of osmotic stress on aquaporin expression. These results indicate that osmotic stress enhances cell wall suberization and markedly reduces Lpr of the apoplastic pathway, whereas Lpr of the cell-to-cell pathway is not altered. Thus, the sealed apoplast markedly reduces the uncontrolled backflow of water from the root to the medium, whilst keeping constant water flow through the highly regulated cell-to-cell path.
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Affiliation(s)
- Tino Kreszies
- Department of EcophysiologyInstitute of Cellular and Molecular BotanyUniversity of BonnKirschallee 153115BonnGermany
| | - Nandhini Shellakkutti
- Department of EcophysiologyInstitute of Cellular and Molecular BotanyUniversity of BonnKirschallee 153115BonnGermany
| | - Alina Osthoff
- Crop Functional GenomicsInstitute of Crop Science and Resource Conservation (INRES)University of Bonn53113BonnGermany
| | - Peng Yu
- Crop Functional GenomicsInstitute of Crop Science and Resource Conservation (INRES)University of Bonn53113BonnGermany
| | - Jutta A. Baldauf
- Crop Functional GenomicsInstitute of Crop Science and Resource Conservation (INRES)University of Bonn53113BonnGermany
| | - Viktoria V. Zeisler‐Diehl
- Department of EcophysiologyInstitute of Cellular and Molecular BotanyUniversity of BonnKirschallee 153115BonnGermany
| | - Kosala Ranathunge
- School of Biological SciencesUniversity of Western Australia35 Stirling HighwayCrawley6009PerthAustralia
| | - Frank Hochholdinger
- Crop Functional GenomicsInstitute of Crop Science and Resource Conservation (INRES)University of Bonn53113BonnGermany
| | - Lukas Schreiber
- Department of EcophysiologyInstitute of Cellular and Molecular BotanyUniversity of BonnKirschallee 153115BonnGermany
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70
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Borrajo CI, Sánchez-Moreiras AM, Reigosa MJ. Morpho-physiological responses of tall wheatgrass populations to different levels of water stress. PLoS One 2018; 13:e0209281. [PMID: 30557312 PMCID: PMC6296543 DOI: 10.1371/journal.pone.0209281] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2018] [Accepted: 12/03/2018] [Indexed: 11/19/2022] Open
Abstract
Tall wheatgrass [Elymus elongatus subsp. ponticus (Podp.) Melderis] is a perennial forage grass cultivated in dry, saline or alkaline environments. The morpho-physiological characteristics of four populations of tall wheatgrass from different climatic-edaphic origins were evaluated under three conditions of water stress (100%-50%-30% of field capacity). The trial was analyzed with three replicates and two-factor ANOVA in pots within the greenhouse during 35 days. Only dry matter and tiller number showed interaction between populations and water conditions. The most relevant changes in morpho-physiological parameters under strong water stress were reduced dry matter production (48–32% differing among populations), smaller leaf and tiller size (46% and 28%), together with higher water use efficiency (74%), and increased proline and protein contents (144% and 71%), smaller tiller number (30–11% differing among populations) and a slight decrease in leaf water content (3%). The populations differed in growth strategies and morpho-physiological mechanisms to survive water stress, which could be related to their habitat background. The study shows the stability in dry matter production under all levels of water stress, which can be related to the higher tiller number. Due to this plasticity, tall wheatgrass should be studied as a species with great potential to adapt to drought stress.
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Affiliation(s)
- Celina I. Borrajo
- Department of Plant Biology and Soil Science, Faculty of Biology, University of Vigo, Vigo, Pontevedra, Spain
- * E-mail:
| | - Adela M. Sánchez-Moreiras
- Department of Plant Biology and Soil Science, Faculty of Biology, University of Vigo, Vigo, Pontevedra, Spain
| | - Manuel J. Reigosa
- Department of Plant Biology and Soil Science, Faculty of Biology, University of Vigo, Vigo, Pontevedra, Spain
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Liu Q, Tang J, Wang W, Zhang Y, Yuan H, Huang S. Transcriptome analysis reveals complex response of the medicinal/ornamental halophyte Iris halophila Pall. to high environmental salinity. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2018; 165:250-260. [PMID: 30199796 DOI: 10.1016/j.ecoenv.2018.09.003] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/11/2018] [Revised: 08/28/2018] [Accepted: 09/01/2018] [Indexed: 05/25/2023]
Abstract
The remediation and subsequent use of saline-alkaline land are of great significance to ecological environment construction and sustainable agricultural development. Iris halophila Pall. is a salt-tolerant medicinal and ornamental plant, which has good application prospects in the ecological construction of saline-alkaline land; therefore, study of the molecular mechanisms of salt tolerance in I. halophila has important theoretical and practical value. To evaluate the molecular mechanism of the response of I. halophila to salt toxicity, I. halophila seedlings were treated with salt (300 mM NaCl) and subjected to deep RNA sequencing. The clean reads were obtained and assembled into 297,188 unigenes. Among them, 1120 and 100 salt-responsive genes were identified in I. halophila shoots and roots, respectively. Among them, the key flavonoid and lignin biosynthetic genes, hormone signaling genes, sodium/potassium ion transporter genes, and transcription factors were analyzed and summarized. Quantitative reverse-transcription PCR analysis strengthened the reliability of the RNA sequencing results. This work provides an overview of the transcriptomic responses to salt toxicity in I. halophila and identifies the responsive genes that may contribute to its reduced salt toxicity. These results lay an important foundation for further study of the molecular mechanisms of salt tolerance in I. halophila and related species.
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Affiliation(s)
- Qingquan Liu
- Institute of Botany, Jiangsu Province and Chinese Academy of Sciences, Nanjing 210014, China; The Jiangsu Provincial Platform for Conservation and Utilization of Agricultural Germplasm, Nanjing 210014, China
| | - Jun Tang
- Institute of Botany, Jiangsu Province and Chinese Academy of Sciences, Nanjing 210014, China; The Jiangsu Provincial Platform for Conservation and Utilization of Agricultural Germplasm, Nanjing 210014, China; Jiangsu Key Laboratory for Horticultural Crop Genetic Improvement, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China
| | - Weilin Wang
- Institute of Botany, Jiangsu Province and Chinese Academy of Sciences, Nanjing 210014, China; The Jiangsu Provincial Platform for Conservation and Utilization of Agricultural Germplasm, Nanjing 210014, China
| | - Yongxia Zhang
- Institute of Botany, Jiangsu Province and Chinese Academy of Sciences, Nanjing 210014, China; The Jiangsu Provincial Platform for Conservation and Utilization of Agricultural Germplasm, Nanjing 210014, China
| | - Haiyan Yuan
- Institute of Botany, Jiangsu Province and Chinese Academy of Sciences, Nanjing 210014, China; The Jiangsu Provincial Platform for Conservation and Utilization of Agricultural Germplasm, Nanjing 210014, China
| | - Suzhen Huang
- Institute of Botany, Jiangsu Province and Chinese Academy of Sciences, Nanjing 210014, China; The Jiangsu Provincial Platform for Conservation and Utilization of Agricultural Germplasm, Nanjing 210014, China.
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Identification of COS markers specific for Thinopyrum elongatum chromosomes preliminary revealed high level of macrosyntenic relationship between the wheat and Th. elongatum genomes. PLoS One 2018; 13:e0208840. [PMID: 30540828 PMCID: PMC6291125 DOI: 10.1371/journal.pone.0208840] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2018] [Accepted: 11/25/2018] [Indexed: 11/19/2022] Open
Abstract
Thinopyrum elongatum (Host) D.R. Dewey has served as an important gene source for wheat breeding improvement for many years. The exact characterization of its chromosomes is important for the detailed analysis of prebreeding materials produced with this species. The major aim of this study was to identify and characterize new molecular markers to be used for the rapid analysis of E genome chromatin in wheat background. Sixty of the 169 conserved orthologous set (COS) markers tested on diverse wheat-Th. elongatum disomic/ditelosomic addition lines were assigned to various Th. elongatum chromosomes and will be used for marker-assisted selection. The macrosyntenic relationship between the wheat and Th. elongatum genomes was investigated using EST sequences. Several rearrangements were revealed in homoeologous chromosome groups 2, 5, 6 and 7, while chromosomes 1 and 4 were conserved. Molecular cytogenetic and marker analysis showed the presence of rearranged chromosome involved in 6ES and 2EL arms in the 6E disomic addition line. The selected chromosome arm-specific COS markers will make it possible to identify gene introgressions in breeding programmes and will also be useful in the development of new chromosome-specific markers, evolutionary analysis and gene mapping.
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73
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Nazari M, Moosavi SS, Maleki M. Morpho-physiological and proteomic responses of Aegilops tauschii to imposed moisture stress. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2018; 132:445-452. [PMID: 30292161 DOI: 10.1016/j.plaphy.2018.09.031] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/29/2018] [Revised: 09/24/2018] [Accepted: 09/25/2018] [Indexed: 06/08/2023]
Abstract
Moisture stress is the most important limitation of wheat production in the worldwide. Among the tribe Triticeae, Aegilops tauschii is one of the most valuable gene sources of resistance to abiotic stresses. In order to identify the most tolerant accession to moisture stress, and to understand its adaptive mechanisms at the molecular level, the present experiment was carried out on ten Ae. tauschii accessions under normal (95% soil pot capacity) and moisture stress (45% soil pot capacity) conditions. At the start of the heading time, the expanded flag leaves of treated and untreated plants were sampled for two-dimensional electrophoresis (2-DE) based on proteomics approach. A19 accession was less affected by the imposed moisture stress; therefore, it was used for the proteomics experiment. Among 252 protein spots which were reproducibly detected in each given 2-DE gels, 25 spots showed significant differences between the two moisture treatments; 17 spots were upregulated and 8 spots were downregulated. The identified proteins by MALDI-TOF/TOF, were allocated to seven functional protein groups, which were mainly involved in photosynthesis/respiration (28.5%), carbohydrate metabolism (14.2%), energy metabolism (7.1%), chaperone (14.2%), protein translation and processing (14.2%), repair and stability of the genome (7.1%) and unknown function (14.2%). We report this for the first time that RMI2 protein (in the group of repair and stability of the genome) was significantly changed in wheat in response to moisture stress. We believe that, the identified proteins could play important roles in acclimation and tolerance to moisture stress and provide the genetic pathways for improving tolerance to moisture stress in wheat.
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Affiliation(s)
- Maryam Nazari
- Department of Agronomy and Plant Breeding, Faculty of Agriculture, Bu-Ali Sina University, Hamedan, Iran
| | - Sayyed Saeed Moosavi
- Department of Agronomy and Plant Breeding, Faculty of Agriculture, Bu-Ali Sina University, Hamedan, Iran.
| | - Mahmood Maleki
- Department of Biotechnology, Institute of Science and High Technology and Environmental Science, Graduate University of Advanced Technology, Kerman, Iran
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Ferchichi S, Hessini K, Dell Aversana E, D Amelia L, Woodrow P, Ciarmiello LF, Fuggi A, Carillo P. Hordeum vulgare and Hordeum maritimum respond to extended salinity stress displaying different temporal accumulation pattern of metabolites. FUNCTIONAL PLANT BIOLOGY : FPB 2018; 45:1096-1109. [PMID: 32290971 DOI: 10.1071/fp18046] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2018] [Accepted: 04/21/2018] [Indexed: 05/27/2023]
Abstract
Hordeum maritimum With. (= H. marinum Huds. subsp. marinum, 2n=14) is a wild cereal present in the saline depressions of the Soliman and Kelbia Sebkhas, which contributes significantly to annual biomass production in Tunisia. This species is able to tolerate high NaCl concentrations at the seedling stage without showing symptoms of toxicity; however, the tolerance strategy mechanisms of this plant have not yet been unravelled. Our metabolite analysis, performed on leaves of H. maritimum during extended stress in comparison with Hordeum vulgare L. cv. Lamsi, has revealed an adaptive response of the wild species based on a different temporal accumulation pattern of ions and compatible metabolites. Further, wild and cultivated genotypes with contrasting salt-tolerant behaviour display different pattern of metabolites when salt stress is prolonged over 2 weeks. In particular, when exposed to up to 3 weeks of 200mM NaCl salt stress, H. maritimum is able to maintain lower leaf concentrations of sodium and chloride, and higher concentrations of potassium compared with H. vulgare. This likely restricts sodium entry into plants at the root level, and uses the toxic ions, glycine betaine and low levels of proline for osmotic adjustment. Under prolonged stress, the accumulation of proline increases, reaching the highest levels in concomitance with the decrease of potassium to sodium ratio, the increase of hydrogen peroxide and decrease of chlorophylls. The modulation of proline accumulation over time can be interpreted as an adaptive response to long-term salinity. Moreover, once synthetised glycine betaine is transported but not metabolised, it can contribute together with proline to osmotically balance H. maritimum leaves and protect them from oxidative stress. The 2-3 week delay of H. maritimum in showing the symptoms of stress and damages compared with H. vulgare could be important in the survival of plants when soil salinity is not a permanent condition, but just a transient state of stress.
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Affiliation(s)
- Selma Ferchichi
- Laboratory of Extremophile Plants, Center of Biotechnology of Borj Cedria, University of Elmanar, B.P. 901, Hammam-Lif 2050, Tunisia
| | - Kamel Hessini
- Laboratory of Extremophile Plants, Center of Biotechnology of Borj Cedria, University of Elmanar, B.P. 901, Hammam-Lif 2050, Tunisia
| | - Emilia Dell Aversana
- Department of Environmental, Biological and Pharmaceutical Sciences and Technologies, University of Campania 'Luigi Vanvitelli', Via Vivaldi 43, 81100 Caserta, Italy
| | - Luisa D Amelia
- Department of Environmental, Biological and Pharmaceutical Sciences and Technologies, University of Campania 'Luigi Vanvitelli', Via Vivaldi 43, 81100 Caserta, Italy
| | - Pasqualina Woodrow
- Department of Environmental, Biological and Pharmaceutical Sciences and Technologies, University of Campania 'Luigi Vanvitelli', Via Vivaldi 43, 81100 Caserta, Italy
| | - Loredana F Ciarmiello
- Department of Environmental, Biological and Pharmaceutical Sciences and Technologies, University of Campania 'Luigi Vanvitelli', Via Vivaldi 43, 81100 Caserta, Italy
| | - Amodio Fuggi
- Department of Environmental, Biological and Pharmaceutical Sciences and Technologies, University of Campania 'Luigi Vanvitelli', Via Vivaldi 43, 81100 Caserta, Italy
| | - Petronia Carillo
- Department of Environmental, Biological and Pharmaceutical Sciences and Technologies, University of Campania 'Luigi Vanvitelli', Via Vivaldi 43, 81100 Caserta, Italy
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75
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Efremova TT, Chumanova EV, Trubacheeva NV, Pershina LA. Compensation Ability between the Chromosomes of Homoeologous Group 7 of Triticum aestivum L. and Hordeum marinum ssp. gussoneanum Hudson (2n = 28) and Analysis of the Transmission Frequency of Alien 7H1Lmar Chromosome through Gametes in the Progeny of Wheat–Barley Substitution Lines. RUSS J GENET+ 2018. [DOI: 10.1134/s1022795418090065] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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76
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Wu H, Shabala L, Azzarello E, Huang Y, Pandolfi C, Su N, Wu Q, Cai S, Bazihizina N, Wang L, Zhou M, Mancuso S, Chen Z, Shabala S. Na+ extrusion from the cytosol and tissue-specific Na+ sequestration in roots confer differential salt stress tolerance between durum and bread wheat. JOURNAL OF EXPERIMENTAL BOTANY 2018; 69:3987-4001. [PMID: 29897491 PMCID: PMC6054258 DOI: 10.1093/jxb/ery194] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/12/2017] [Accepted: 05/21/2018] [Indexed: 05/25/2023]
Abstract
The progress in plant breeding for salinity stress tolerance is handicapped by the lack of understanding of the specificity of salt stress signalling and adaptation at the cellular and tissue levels. In this study, we used electrophysiological, fluorescence imaging, and real-time quantitative PCR tools to elucidate the essentiality of the cytosolic Na+ extrusion in functionally different root zones (elongation, meristem, and mature) in a large number of bread and durum wheat accessions. We show that the difference in the root's ability for vacuolar Na+ sequestration in the mature zone may explain differential salinity stress tolerance between salt-sensitive durum and salt-tolerant bread wheat species. Bread wheat genotypes also had on average 30% higher capacity for net Na+ efflux from the root elongation zone, providing the first direct evidence for the essentiality of the root salt exclusion trait at the cellular level. At the same time, cytosolic Na+ accumulation in the root meristem was significantly higher in bread wheat, leading to the suggestion that this tissue may harbour a putative salt sensor. This hypothesis was then tested by investigating patterns of Na+ distribution and the relative expression level of several key genes related to Na+ transport in leaves in plants with intact roots and in those in which the root meristems were removed. We show that tampering with this sensing mechanism has resulted in a salt-sensitive phenotype, largely due to compromising the plant's ability to sequester Na+ in mesophyll cell vacuoles. The implications of these findings for plant breeding for salinity stress tolerance are discussed.
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Affiliation(s)
- Honghong Wu
- School of Land and Food, University of Tasmania, Private Bag, Hobart, Tasmania, Australia
| | - Lana Shabala
- School of Land and Food, University of Tasmania, Private Bag, Hobart, Tasmania, Australia
| | - Elisa Azzarello
- Department of Horticulture, University of Florence, Sesto Fiorentino, Italy
| | - Yuqing Huang
- School of Science and Health, Hawkesbury Institute for the Environment, Western Sydney University, Penrith, NSW, Australia
| | - Camilla Pandolfi
- Department of Horticulture, University of Florence, Sesto Fiorentino, Italy
| | - Nana Su
- School of Land and Food, University of Tasmania, Private Bag, Hobart, Tasmania, Australia
| | - Qi Wu
- School of Land and Food, University of Tasmania, Private Bag, Hobart, Tasmania, Australia
| | - Shengguan Cai
- School of Science and Health, Hawkesbury Institute for the Environment, Western Sydney University, Penrith, NSW, Australia
| | - Nadia Bazihizina
- School of Land and Food, University of Tasmania, Private Bag, Hobart, Tasmania, Australia
- Department of Horticulture, University of Florence, Sesto Fiorentino, Italy
| | - Lu Wang
- School of Natural Sciences, University of Tasmania, Private Bag 55, Hobart, Tasmania, Australia
| | - Meixue Zhou
- School of Land and Food, University of Tasmania, Private Bag, Hobart, Tasmania, Australia
| | - Stefano Mancuso
- Department of Horticulture, University of Florence, Sesto Fiorentino, Italy
| | - Zhonghua Chen
- School of Science and Health, Hawkesbury Institute for the Environment, Western Sydney University, Penrith, NSW, Australia
| | - Sergey Shabala
- School of Land and Food, University of Tasmania, Private Bag, Hobart, Tasmania, Australia
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77
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Mansouri M, Naghavi MR, Alizadeh H, Mohammadi-Nejad G, Mousavi SA, Salekdeh GH, Tada Y. Transcriptomic analysis of Aegilops tauschii during long-term salinity stress. Funct Integr Genomics 2018; 19:13-28. [PMID: 29931612 DOI: 10.1007/s10142-018-0623-y] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2017] [Revised: 03/17/2018] [Accepted: 06/07/2018] [Indexed: 10/28/2022]
Abstract
Aegilops tauschii is the diploid progenitor of the bread wheat D-genome. It originated from Iran and is a source of abiotic stress tolerance genes. However, little is known about the molecular events of salinity tolerance in Ae. tauschii. This study investigates the leaf transcriptional changes associated with long-term salt stress. Total RNA extracted from leaf tissues of control and salt-treated samples was sequenced using the Illumina technology, and more than 98 million high-quality reads were assembled into 255,446 unigenes with an average length of 1398 bp and an N50 of 2269 bp. Functional annotation of the unigenes showed that 93,742 (36.69%) had at least a significant BLAST hit in the SwissProt database, while 174,079 (68.14%) showed significant similarity to proteins in the NCBI nr database. Differential expression analysis identified 4506 salt stress-responsive unigenes. Bioinformatic analysis of the differentially expressed unigenes (DEUs) revealed a number of biological processes and pathways involved in the establishment of ion homeostasis, signaling processes, carbohydrate metabolism, and post-translational modifications. Fine regulation of starch and sucrose content may be important features involved in salt tolerance in Ae. tauschii. Moreover, 82% of DEUs mapped to the D-subgenome, including known QTL for salt tolerance, and these DEUs showed similar salt stress responses in other accessions of Ae. tauschii. These results could provide fundamental insight into the regulatory process underlying salt tolerance in Ae. tauschii and wheat and facilitate identification of genes involved in their salt tolerance mechanisms.
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Affiliation(s)
- Mehdi Mansouri
- Department of Agricultural Biotechnology, Faculty of Agriculture, Shahid Bahonar University of Kerman, Kerman, Iran
| | - Mohammad Reza Naghavi
- Agronomy and Plant Breeding Department, Agricultural & Natural Resources College, University of Tehran, Karaj, 31587-11167, Iran.
| | - Hoshang Alizadeh
- Agronomy and Plant Breeding Department, Agricultural & Natural Resources College, University of Tehran, Karaj, 31587-11167, Iran
| | - Ghasem Mohammadi-Nejad
- Department of Agronomy and plant Breeding, College of Agriculture and Center of Excellence for Abiotic Stress in Cereal Crop, Shahid Bahonar University of Kerman, Kerman, Iran
| | - Seyed Ahmad Mousavi
- Department of Molecular Systems Biology at Cell Science Research Center, Royan Institute for Stem Cell Biology and Technology, ACECR, Tehran, Iran
| | - Ghasem Hosseini Salekdeh
- Department of Systems Biology, Agricultural Biotechnology Research Institute of Iran, Karaj, Iran
| | - Yuichi Tada
- School of Bioscience and Biotechnology, Tokyo University of Technology, 1404-1 Katakura, Hachioji, Tokyo, 192-0982, Japan.
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78
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Oyiga BC, Sharma RC, Baum M, Ogbonnaya FC, Léon J, Ballvora A. Allelic variations and differential expressions detected at quantitative trait loci for salt stress tolerance in wheat. PLANT, CELL & ENVIRONMENT 2018; 41:919-935. [PMID: 28044314 DOI: 10.1111/pce.12898] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/26/2016] [Revised: 12/23/2016] [Accepted: 12/24/2016] [Indexed: 05/08/2023]
Abstract
The increasing salinization of agricultural lands is a threat to global wheat production. Understanding of the mechanistic basis of salt tolerance (ST) is essential for developing breeding and selection strategies that would allow for increased wheat production under saline conditions to meet the increasing global demand. We used a set that consists of 150 internationally derived winter and facultative wheat cultivars genotyped with a 90K SNP chip and phenotyped for ST across three growth stages and for ionic (leaf K+ and Na+ contents) traits to dissect the genetic architecture regulating ST in wheat. Genome-wide association mapping revealed 187 Single Nucleotide Polymorphism (SNPs) (R2 = 3.00-30.67%), representing 37 quantitative trait loci (QTL), significantly associated with the ST traits. Of these, four QTL on 1BS, 2AL, 2BS and 3AL were associated with ST across the three growth stages and with the ionic traits. Novel QTL were also detected on 1BS and 1DL. Candidate genes linked to these polymorphisms were uncovered, and expression analyses were performed and validated on them under saline and non-saline conditions using transcriptomics and qRT-PCR data. Expressed sequence comparisons in contrasting ST wheat genotypes identified several non-synonymous/missense mutation sites that are contributory to the ST trait variations, indicating the biological relevance of these polymorphisms that can be exploited in breeding for ST in wheat.
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Affiliation(s)
- Benedict C Oyiga
- INRES Pflanzenzuchtung, Rheinische Friedrich-Wilhelms-Universitat, D-53115 Bonn, Germany
- Center for Development Research (ZEF), Rheinische Friedrich-Wilhelms-Universitat, D-53115 Bonn, Germany
| | - Ram C Sharma
- International Center for Agricultural Research in the Dry Areas (ICARDA), 6 Osiyo Street, Tashkent, 100000, Uzbekistan
| | - Michael Baum
- International Centre for Agricultural Research in the Dry Areas (ICARDA), PO Box 6299, Al Irfane, 10112, Rabat, Morocco
| | - Francis C Ogbonnaya
- International Centre for Agricultural Research in the Dry Areas (ICARDA), PO Box 6299, Al Irfane, 10112, Rabat, Morocco
- Grains Research and Development Corporation, PO Box 5367, Kingston, Australian Capital Territory, 2604, Australia
| | - Jens Léon
- INRES Pflanzenzuchtung, Rheinische Friedrich-Wilhelms-Universitat, D-53115 Bonn, Germany
| | - Agim Ballvora
- INRES Pflanzenzuchtung, Rheinische Friedrich-Wilhelms-Universitat, D-53115 Bonn, Germany
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79
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Monteiro F, Frese L, Castro S, Duarte MC, Paulo OS, Loureiro J, Romeiras MM. Genetic and Genomic Tools to Asssist Sugar Beet Improvement: The Value of the Crop Wild Relatives. FRONTIERS IN PLANT SCIENCE 2018; 9:74. [PMID: 29467772 PMCID: PMC5808244 DOI: 10.3389/fpls.2018.00074] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/11/2017] [Accepted: 01/15/2018] [Indexed: 05/21/2023]
Abstract
Sugar beet (Beta vulgaris L. ssp. vulgaris) is one of the most important European crops for both food and sugar production. Crop improvement has been developed to enhance productivity, sugar content or other breeder's desirable traits. The introgression of traits from Crop Wild Relatives (CWR) has been done essentially for lessening biotic stresses constraints, namely using Beta and Patellifolia species which exhibit disease resistance characteristics. Several studies have addressed crop-to-wild gene flow, yet, for breeding programs genetic variability associated with agronomically important traits remains unexplored regarding abiotic factors. To accomplish such association from phenotype-to-genotype, screening for wild relatives occurring in habitats where selective pressures are in play (i.e., populations in salt marshes for salinity tolerance; populations subjected to pathogen attacks and likely evolved resistance to pathogens) are the most appropriate streamline to identify causal genetic information. By selecting sugar beet CWR species based on genomic tools, rather than random variations, is a promising but still seldom explored route toward the development of improved crops. In this perspective, a viable streamline for sugar beet improvement is proposed through the use of different genomic tools by recurring to sugar beet CWRs and focusing on agronomic traits associated with abiotic stress tolerance. Overall, identification of genomic and epigenomic landscapes associated to adaptive ecotypes, along with the cytogenetic and habitat characterization of sugar beet CWR, will enable to identify potential hotspots for agrobiodiversity of sugar beet crop improvement toward abiotic stress tolerance.
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Affiliation(s)
- Filipa Monteiro
- Centre for Ecology, Evolution and Environmental Changes, Faculdade de Ciências Universidade de Lisboa, Lisboa, Portugal
- Linking Landscape, Environment, Agriculture and Food, Instituto Superior de Agronomia, Universidade de Lisboa, Lisboa, Portugal
| | - Lothar Frese
- Institute for Breeding Research on Agricultural Crops, Julius Kühn-Institut, Federal Research Centre for Cultivated Plants (JKI), Quedlinburg, Germany
| | - Sílvia Castro
- Department of Life Sciences, Centre for Functional Ecology, Universidade de Coimbra, Coimbra, Portugal
| | - Maria C. Duarte
- Centre for Ecology, Evolution and Environmental Changes, Faculdade de Ciências Universidade de Lisboa, Lisboa, Portugal
| | - Octávio S. Paulo
- Centre for Ecology, Evolution and Environmental Changes, Faculdade de Ciências Universidade de Lisboa, Lisboa, Portugal
| | - João Loureiro
- Department of Life Sciences, Centre for Functional Ecology, Universidade de Coimbra, Coimbra, Portugal
| | - Maria M. Romeiras
- Centre for Ecology, Evolution and Environmental Changes, Faculdade de Ciências Universidade de Lisboa, Lisboa, Portugal
- Linking Landscape, Environment, Agriculture and Food, Instituto Superior de Agronomia, Universidade de Lisboa, Lisboa, Portugal
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80
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Alvarez JB, Guzmán C. Interspecific and intergeneric hybridization as a source of variation for wheat grain quality improvement. TAG. THEORETICAL AND APPLIED GENETICS. THEORETISCHE UND ANGEWANDTE GENETIK 2018; 131:225-251. [PMID: 29285597 DOI: 10.1007/s00122-017-3042-x] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/24/2017] [Accepted: 12/17/2017] [Indexed: 05/27/2023]
Abstract
The hybridization events with wild relatives and old varieties are an alternative source for enlarging the wheat quality variability. This review describes these process and their effects on the technological and nutritional quality. Wheat quality and its end-uses are mainly based on variation in three traits: grain hardness, gluten quality and starch. In recent times, the importance of nutritional quality and health-related aspects has increased the range of these traits with the inclusion of other grain components such as vitamins, fibre and micronutrients. One option to enlarge the genetic variability in wheat for all these components has been the use of wild relatives, together with underutilised or neglected wheat varieties or species. In the current review, we summarise the role of each grain component in relation to grain quality, their variation in modern wheat and the alternative sources in which wheat breeders have found novel variation.
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Affiliation(s)
- Juan B Alvarez
- Departamento de Genética, Escuela Técnica Superior de Ingeniería Agronómica y de Montes, Edificio Gregor Mendel, Campus de Rabanales, Universidad de Córdoba, CeiA3, 14071, Córdoba, Spain.
| | - Carlos Guzmán
- CIMMYT, Global Wheat Program, Km 45 Carretera México-Veracruz, El Batán, C.P. 56130, Texcoco, Estado de México, Mexico
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81
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Arabbeigi M, Arzani A, Majidi MM, Sayed-Tabatabaei BE, Saha P. Expression pattern of salt tolerance-related genes in Aegilops cylindrica. PHYSIOLOGY AND MOLECULAR BIOLOGY OF PLANTS : AN INTERNATIONAL JOURNAL OF FUNCTIONAL PLANT BIOLOGY 2018; 24:61-73. [PMID: 29398839 PMCID: PMC5787114 DOI: 10.1007/s12298-017-0483-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/04/2017] [Revised: 10/19/2017] [Accepted: 10/29/2017] [Indexed: 05/02/2023]
Abstract
Aegilops cylindrica, a salt-tolerant gene pool of wheat, is a useful plant model for understanding mechanism of salt tolerance. A salt-tolerant USL26 and a salt-sensitive K44 genotypes of A. cylindrica, originating from Uremia Salt Lake shores in Northwest Iran and a non-saline Kurdestan province in West Iran, respectively, were identified based on screening evaluation and used for this work. The objective of the current study was to investigate the expression patterns of four genes related to ion homeostasis in this species. Under treatment of 400 mM NaCl, USL26 showed significantly higher root and shoot dry matter levels and K+ concentrations, together with lower Na+ concentrations than K44 genotype. A. cylindrica HKT1;5 (AecHKT1;5), SOS1 (AecSOS1), NHX1 (AecNHX1) and VP1 (AecVP1) were partially sequenced to design each gene specific primer. Quantitative real-time PCR showed a differential expression pattern of these genes between the two genotypes and between the root and shoot tissues. Expressions of AecHKT1;5 and AecSOS1 was greater in the roots than in the shoots of USL26 while AecNHX1 and AecVP1 were equally expressed in both tissues of USL26 and K44. The higher transcripts of AecHKT1;5 in the roots versus the shoots could explain both the lower Na+ in the shoots and the much lower Na+ and higher K+ concentrations in the roots/shoots of USL26 compared to K44. Therefore, the involvement of AecHKT1;5 in shoot-to-root handover of Na+ in possible combination with the exclusion of excessive Na+ from the root in the salt-tolerant genotype are suggested.
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Affiliation(s)
- Mahbube Arabbeigi
- Department of Agronomy and Plant Breeding, College of Agriculture, Isfahan University of Technology, Isfahan, 8415683111 Iran
| | - Ahmad Arzani
- Department of Agronomy and Plant Breeding, College of Agriculture, Isfahan University of Technology, Isfahan, 8415683111 Iran
- Department of Plant Sciences, University of California, Davis, Davis, CA 95616 USA
| | - Mohammad Mahdi Majidi
- Department of Agronomy and Plant Breeding, College of Agriculture, Isfahan University of Technology, Isfahan, 8415683111 Iran
| | | | - Prasenjit Saha
- Department of Plant Sciences, University of California, Davis, Davis, CA 95616 USA
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83
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Tilbrook J, Schilling RK, Berger B, Garcia AF, Trittermann C, Coventry S, Rabie H, Brien C, Nguyen M, Tester M, Roy SJ. Variation in shoot tolerance mechanisms not related to ion toxicity in barley. FUNCTIONAL PLANT BIOLOGY : FPB 2017; 44:1194-1206. [PMID: 32480644 DOI: 10.1071/fp17049] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/15/2017] [Accepted: 07/26/2017] [Indexed: 06/11/2023]
Abstract
Soil salinity can severely reduce crop growth and yield. Many studies have investigated salinity tolerance mechanisms in cereals using phenotypes that are relatively easy to measure. The majority of these studies measured the accumulation of shoot Na+ and the effect this has on plant growth. However, plant growth is reduced immediately after exposure to NaCl before Na+ accumulates to toxic concentrations in the shoot. In this study, nondestructive and destructive measurements are used to evaluate the responses of 24 predominately Australian barley (Hordeum vulgare L.) lines at 0, 150 and 250mM NaCl. Considerable variation for shoot tolerance mechanisms not related to ion toxicity (shoot ion-independent tolerance) was found, with some lines being able to maintain substantial growth rates under salt stress, whereas others stopped growing. Hordeum vulgare spp. spontaneum accessions and barley landraces predominantly had the best shoot ion independent tolerance, although two commercial cultivars, Fathom and Skiff, also had high tolerance. The tolerance of cv. Fathom may be caused by a recent introgression from H. vulgare L. spp. spontaneum. This study shows that the most salt-tolerant barley lines are those that contain both shoot ion-independent tolerance and the ability to exclude Na+ from the shoot (and thus maintain high K+:Na+ ratios).
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Affiliation(s)
- Joanne Tilbrook
- Australian Centre for Plant Functional Genomics, University of Adelaide, PMB1, Glen Osmond, SA 5064, Australia
| | - Rhiannon K Schilling
- Australian Centre for Plant Functional Genomics, University of Adelaide, PMB1, Glen Osmond, SA 5064, Australia
| | - Bettina Berger
- School of Agriculture, Food and Wine, University of Adelaide, PMB1, Glen Osmond, SA 5064, Australia
| | - Alexandre F Garcia
- Australian Centre for Plant Functional Genomics, University of Adelaide, PMB1, Glen Osmond, SA 5064, Australia
| | - Christine Trittermann
- Australian Centre for Plant Functional Genomics, University of Adelaide, PMB1, Glen Osmond, SA 5064, Australia
| | - Stewart Coventry
- School of Agriculture, Food and Wine, University of Adelaide, PMB1, Glen Osmond, SA 5064, Australia
| | - Huwaida Rabie
- School of Information Technology and Mathematical Services, University of South Australia, Mawson Lakes, SA 5095, Australia
| | - Chris Brien
- School of Information Technology and Mathematical Services, University of South Australia, Mawson Lakes, SA 5095, Australia
| | - Martin Nguyen
- School of Information Technology and Mathematical Services, University of South Australia, Mawson Lakes, SA 5095, Australia
| | - Mark Tester
- King Abdullah University of Science and Technology, Biological and Environmental Sciences and Engineering, Thuwal 23955-6900, Saudi Arabia
| | - Stuart J Roy
- Australian Centre for Plant Functional Genomics, University of Adelaide, PMB1, Glen Osmond, SA 5064, Australia
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Kumar A, Garg M, Kaur N, Chunduri V, Sharma S, Misser S, Kumar A, Tsujimoto H, Dou QW, Gupta RK. Rapid Development and Characterization of Chromosome Specific Translocation Line of Thinopyrum elongatum with Improved Dough Strength. FRONTIERS IN PLANT SCIENCE 2017; 8:1593. [PMID: 28959271 PMCID: PMC5604074 DOI: 10.3389/fpls.2017.01593] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/08/2017] [Accepted: 08/30/2017] [Indexed: 06/07/2023]
Abstract
The protein content and its type are principal factors affecting wheat (Triticum aestivum) end product quality. Among the wheat proteins, glutenin proteins, especially, high molecular weight glutenin subunits (HMW-GS) are major determinants of processing quality. Wheat and its primary gene pool have limited variation in terms of HMW-GS alleles. Wild relatives of wheat are an important source of genetic variation. For improvement of wheat processing quality its wild relative Thinopyrum elongatum with significant potential was utilized. An attempt was made to replace Th. elongatum chromosome long arm (1EL) carrying HMW-GS genes related to high dough strength with chromosome 1AL of wheat with least or negative effect on dough strength while retaining the chromosomes 1DL and 1BL with a positive effect on bread making quality. To create chromosome specific translocation line [1EL(1AS)], double monosomic of chromosomes 1E and 1A were created and further crossed with different cultivars and homoeologous pairing suppressor mutant line PhI . The primary selection was based upon glutenin and gliadin protein profiles, followed by sequential genomic in situ hybridization (GISH) and fluorescent in situ hybridization (FISH). These steps significantly reduced time, efforts, and economic cost in the generation of translocation line. In order to assess the effect of translocation on wheat quality, background recovery was carried out by backcrossing with recurrent parent for several generations and then selfing while selecting in each generation. Good recovery of parent background indicated the development of almost near isogenic line (NIL). Morphologically also translocation line was similar to recipient cultivar N61 that was further confirmed by seed storage protein profiles, RP-HPLC and scanning electron microscopy. The processing quality characteristics of translocation line (BC4F6) indicated significant improvement in the gluten performance index (GPI), dough mixing properties, dough strength, and extensibility. Our work aims to address the challenge of limited genetic diversity especially at chromosome 1A HMW-GS locus. We report successful development of chromosome 1A specific translocation line of Th. elongatum in wheat with improved dough strength.
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Affiliation(s)
- Aman Kumar
- National Agri-Food Biotechnology InstituteMohali, India
| | - Monika Garg
- National Agri-Food Biotechnology InstituteMohali, India
| | - Navneet Kaur
- National Agri-Food Biotechnology InstituteMohali, India
| | | | - Saloni Sharma
- National Agri-Food Biotechnology InstituteMohali, India
| | - Swati Misser
- National Agri-Food Biotechnology InstituteMohali, India
| | - Ashish Kumar
- National Agri-Food Biotechnology InstituteMohali, India
| | - Hisashi Tsujimoto
- United Graduate School of Agriculture, Tottori UniversityTottori, Japan
| | - Quan-Wen Dou
- Northwest Institute of Plateau Biology (CAS)Qinghai, China
| | - Raj K. Gupta
- Indian Institute of Wheat and Barley Research, Indian Council of Agricultural ResearchKarnal, India
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85
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Rakszegi M, Molnár I, Lovegrove A, Darkó É, Farkas A, Láng L, Bedő Z, Doležel J, Molnár-Láng M, Shewry P. Addition of Aegilops U and M Chromosomes Affects Protein and Dietary Fiber Content of Wholemeal Wheat Flour. FRONTIERS IN PLANT SCIENCE 2017; 8:1529. [PMID: 28932231 PMCID: PMC5592229 DOI: 10.3389/fpls.2017.01529] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2017] [Accepted: 08/21/2017] [Indexed: 05/22/2023]
Abstract
Cereal grain fiber is an important health-promoting component in the human diet. One option to improve dietary fiber content and composition in wheat is to introduce genes from its wild relatives Aegilops biuncialis and Aegilops geniculata. This study showed that the addition of chromosomes 2Ug, 4Ug, 5Ug, 7Ug, 2Mg, 5Mg, and 7Mg of Ae. geniculata and 3Ub, 2Mb, 3Mb, and 7Mb of Ae. biuncialis into bread wheat increased the seed protein content. Chromosomes 1Ug and 1Mg increased the proportion of polymeric glutenin proteins, while the addition of chromosomes 1Ub and 6Ub led to its decrease. Both Aegilops species had higher proportions of β-glucan compared to arabinoxylan (AX) than wheat lines, and elevated β-glucan content was also observed in wheat chromosome addition lines 5U, 7U, and 7M. The AX content in wheat was increased by the addition of chromosomes 5Ug, 7Ug, and 1Ub while water-soluble AX was increased by the addition of chromosomes 5U, 5M, and 7M, and to a lesser extent by chromosomes 3, 4, 6Ug, and 2Mb. Chromosomes 5Ug and 7Mb also affected the structure of wheat AX, as shown by the pattern of oligosaccharides released by digestion with endoxylanase. These results will help to map genomic regions responsible for edible fiber content in Aegilops and will contribute to the efficient transfer of wild alleles in introgression breeding programs to obtain wheat varieties with improved health benefits. Key Message: Addition of Aegilops U- and M-genome chromosomes 5 and 7 improves seed protein and fiber content and composition in wheat.
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Affiliation(s)
- Marianna Rakszegi
- Agricultural Institute, Centre for Agricultural Research, Hungarian Academy of SciencesMartonvásár, Hungary
| | - István Molnár
- Agricultural Institute, Centre for Agricultural Research, Hungarian Academy of SciencesMartonvásár, Hungary
| | - Alison Lovegrove
- Department of Plant Science, Rothamsted ResearchHarpenden, United Kingdom
| | - Éva Darkó
- Agricultural Institute, Centre for Agricultural Research, Hungarian Academy of SciencesMartonvásár, Hungary
| | - András Farkas
- Agricultural Institute, Centre for Agricultural Research, Hungarian Academy of SciencesMartonvásár, Hungary
| | - László Láng
- Agricultural Institute, Centre for Agricultural Research, Hungarian Academy of SciencesMartonvásár, Hungary
| | - Zoltán Bedő
- Agricultural Institute, Centre for Agricultural Research, Hungarian Academy of SciencesMartonvásár, Hungary
| | - Jaroslav Doležel
- Institute of Experimental Botany, Centre of the Region Haná for Biotechnological and Agricultural ResearchOlomouc, Czechia
| | - Márta Molnár-Láng
- Agricultural Institute, Centre for Agricultural Research, Hungarian Academy of SciencesMartonvásár, Hungary
| | - Peter Shewry
- Department of Plant Science, Rothamsted ResearchHarpenden, United Kingdom
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86
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87
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Salt tolerance response revealed by RNA-Seq in a diploid halophytic wild relative of sweet potato. Sci Rep 2017; 7:9624. [PMID: 28852001 PMCID: PMC5575116 DOI: 10.1038/s41598-017-09241-x] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2016] [Accepted: 07/17/2017] [Indexed: 01/08/2023] Open
Abstract
Crop wild relatives harbor exotic and novel genetic resources, which hold great potential for crop improvement. Ipomoea imperati is a wild diploid relative of sweet potato with the capability of high salinity tolerance. We compared the transcriptomes of I. imperati under salt stress vs. control to identify candidate genes and pathways involved in salt response. De novo assembly produced 67,911 transcripts with a high depth of coverage. A total of 39,902 putative genes were assigned annotations, and 936 and 220 genes involved in salt response in roots and leaves, respectively. Functional analysis indicated a whole system response during salt stress in I. imperati, which included four metabolic processes: sensory initiation, transcriptional reprogramming, cellular protein component change, and cellular homeostasis regulation. We identified a number of candidate genes involved in the ABA signaling pathway, as well as transcription factors, transporters, antioxidant enzymes, and enzymes associated with metabolism of synthesis and catalysis. Furthermore, two membrane transporter genes, including vacuole cation/proton exchanger and inositol transporter, were considered to play important roles in salt tolerance. This study provided valuable information not only for understanding the genetic basis of ecological adaptation but also for future application in sweet potato and other crop improvements.
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88
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Xue W, Yan J, Zhao G, Jiang Y, Cheng J, Cattivelli L, Tondelli A. A major QTL on chromosome 7HS controls the response of barley seedling to salt stress in the Nure × Tremois population. BMC Genet 2017; 18:79. [PMID: 28830338 PMCID: PMC5568257 DOI: 10.1186/s12863-017-0545-z] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2017] [Accepted: 08/11/2017] [Indexed: 12/13/2022] Open
Abstract
Background Seedling establishment is a crucial and vulnerable stage in the crop life cycle which determines further plant growth. While many studies are available on salt tolerance at the vegetative stage, the mechanisms and genetic bases of salt tolerance during seedling establishment have been poorly investigated. Here, a novel and accurate phenotyping protocol was applied to characterize the response of seedlings to salt stress in two barley cultivars (Nure and Tremois) and their double-haploid population. Results The combined phenotypic data and existing genetic map led to the identification of a new major QTL for root elongation under salt stress on chromosome 7HS, with the parent Nure carrying the favourable allele. Gene-based markers were developed from the rice syntenic genomic region to restrict the QTL interval to Bin2.1 of barley chromosome 7HS. Furthermore, doubled haploid lines with contrasting responses to salt stress revealed different root morphological responses to stress, with the susceptible genotypes exhibiting an overall reduction in root length and volume but an increase in root diameter and root hair density. Conclusions Salt tolerance at the seedling stage was studied in barley through a comprehensive phenotyping protocol that allowed the detection of a new major QTL on chromosome 7HS. Electronic supplementary material The online version of this article (doi:10.1186/s12863-017-0545-z) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Wentao Xue
- College of Life Sciences, Guizhou University, Guiyang, Guizhou, 550025, China
| | - Jun Yan
- School of Pharmacy and Bioengineering, Chengdu University, Chengdu, Sichuan, 610106, China
| | - Gang Zhao
- School of Pharmacy and Bioengineering, Chengdu University, Chengdu, Sichuan, 610106, China
| | - Yan Jiang
- College of Agriculture, Guizhou University, Guiyang, Guizhou, 550025, China
| | - Jianping Cheng
- College of Agriculture, Guizhou University, Guiyang, Guizhou, 550025, China.
| | - Luigi Cattivelli
- CREA, Research Centre for Genomics and Bioinformatics, 29017, Fiorenzuola d'Arda, Italy
| | - Alessandro Tondelli
- CREA, Research Centre for Genomics and Bioinformatics, 29017, Fiorenzuola d'Arda, Italy.
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89
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Garcia RM, Parra-Quijano M, Iriondo JM. Identification of ecogeographical gaps in the Spanish Aegilops collections with potential tolerance to drought and salinity. PeerJ 2017; 5:e3494. [PMID: 28761779 PMCID: PMC5534164 DOI: 10.7717/peerj.3494] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2016] [Accepted: 06/02/2017] [Indexed: 11/30/2022] Open
Abstract
Drought, one of the most important abiotic stress factors limiting biomass, significantly reduces crop productivity. Salinization also affects the productivity of both irrigated and rain-fed wheat crops. Species of genus Aegilops can be considered crop wild relatives (CWR) of wheat and have been widely used as gene sources in wheat breeding, especially in providing resistance to pests and diseases. Five species (Ae. biuncialis, Ae. geniculata, Ae. neglecta, Ae. triuncialis and Ae. ventricosa) are included in the Spanish National Inventory of CWRs. This study aimed to identify ecogeographic gaps in the Spanish Network on Plant Genetic Resources for Food and Agriculture (PGRFA) with potential tolerance to drought and salinity. Data on the Spanish populations of the target species collected and conserved in genebanks of the Spanish Network on PGRFA and data on other population occurrences in Spain were compiled and assessed for their geo-referencing quality. The records with the best geo-referencing quality values were used to identify the ecogeographical variables that might be important for Aegilops distribution in Spain. These variables were then used to produce ecogeographic land characterization maps for each species, allowing us to identify populations from low and non-represented ecogeographical categories in ex situ collections. Predictive characterization strategy was used to identify 45 Aegilops populations in these ecogeographical gaps with potential tolerance to drought and salinity conditions. Further efforts are being made to collect and evaluate these populations.
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Affiliation(s)
- Rosa María Garcia
- Centro Nacional de Recursos Fitogenéticos (CRF-INIA), Alcalá de Henares, Madrid, Spain
| | | | - Jose María Iriondo
- Área de Biodiversidad y Conservación, Universidad Rey Juan Carlos, Móstoles, Madrid, Spain
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90
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Landi S, Hausman JF, Guerriero G, Esposito S. Poaceae vs. Abiotic Stress: Focus on Drought and Salt Stress, Recent Insights and Perspectives. FRONTIERS IN PLANT SCIENCE 2017; 8:1214. [PMID: 28744298 PMCID: PMC5504180 DOI: 10.3389/fpls.2017.01214] [Citation(s) in RCA: 57] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2017] [Accepted: 06/27/2017] [Indexed: 05/03/2023]
Abstract
Poaceae represent the most important group of crops susceptible to abiotic stress. This large family of monocotyledonous plants, commonly known as grasses, counts several important cultivated species, namely wheat (Triticum aestivum), rice (Oryza sativa), maize (Zea mays), and barley (Hordeum vulgare). These crops, notably, show different behaviors under abiotic stress conditions: wheat and rice are considered sensitive, showing serious yield reduction upon water scarcity and soil salinity, while barley presents a natural drought and salt tolerance. During the green revolution (1940-1960), cereal breeding was very successful in developing high-yield crops varieties; however, these cultivars were maximized for highest yield under optimal conditions, and did not present suitable traits for tolerance under unfavorable conditions. The improvement of crop abiotic stress tolerance requires a deep knowledge of the phenomena underlying tolerance, to devise novel approaches and decipher the key components of agricultural production systems. Approaches to improve food production combining both enhanced water use efficiency (WUE) and acceptable yields are critical to create a sustainable agriculture in the future. This paper analyzes the latest results on abiotic stress tolerance in Poaceae. In particular, the focus will be directed toward various aspects of water deprivation and salinity response efficiency in Poaceae. Aspects related to cell wall metabolism will be covered, given the importance of the plant cell wall in sensing environmental constraints and in mediating a response; the role of silicon (Si), an important element for monocots' normal growth and development, will also be discussed, since it activates a broad-spectrum response to different exogenous stresses. Perspectives valorizing studies on landraces conclude the survey, as they help identify key traits for breeding purposes.
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Affiliation(s)
- Simone Landi
- Dipartimento di Biologia, Università di Napoli “Federico II”Napoli, Italy
| | - Jean-Francois Hausman
- Environmental Research and Innovation Department, Luxembourg Institute of Science and TechnologyEsch-sur-Alzette, Luxembourg
| | - Gea Guerriero
- Environmental Research and Innovation Department, Luxembourg Institute of Science and TechnologyEsch-sur-Alzette, Luxembourg
| | - Sergio Esposito
- Dipartimento di Biologia, Università di Napoli “Federico II”Napoli, Italy
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91
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Tounsi S, Feki K, Hmidi D, Masmoudi K, Brini F. Salt stress reveals differential physiological, biochemical and molecular responses in T. monococcum and T. durum wheat genotypes. PHYSIOLOGY AND MOLECULAR BIOLOGY OF PLANTS : AN INTERNATIONAL JOURNAL OF FUNCTIONAL PLANT BIOLOGY 2017; 23:517-528. [PMID: 28878491 PMCID: PMC5567718 DOI: 10.1007/s12298-017-0457-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/18/2016] [Revised: 06/09/2017] [Accepted: 06/12/2017] [Indexed: 05/30/2023]
Abstract
Salt stress responses implicate a complex mechanism and differ from plant species to another. In this study, we analyzed the physiological, biochemical and molecular responses to salt stress of the diploid wheat (T. monococcum) and compared to the tetraploid wheat (T. durum). Our results showed that the diploid wheat cultivar (cv. Turkey) is relatively tolerant to different salt stress conditions than the tetraploid wheat cultivar (cv. Om Rabia3). This tolerance was manifested by significant germination, plant growth and uptake of water generating cell turgor and development. Moreover, total chlorophyll content was higher in the diploid wheat than that in the tetraploid wheat. The Na+ content in leaf blade of the cv. Om Rabia3 was significantly higher than that of the cv. Turkey, suggesting that the diploid cultivar accumulates less toxic sodium in the photosynthetic tissues. This mechanism could be explained by the recirculation of the toxic ions Na+ into the xylem sap by SOS1 protein, which coordinates with HKT-like proteins to reduce the accumulation of Na+ ions in leaf blade. Interestingly, the expression of the three genes SOS1, HKT and NHX was enhanced under salinity especially in leaf blade of the cv. Turkey. Moreover, this wheat cultivar induced the antioxidative enzymes CAT and SOD activity more efficiently than the other cultivar.
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Affiliation(s)
- Sana Tounsi
- Biotechnology and Plant Improvement Laboratory, Centre of Biotechnology of Sfax (CBS), University of Sfax, BP “1177”, 3018 Sfax, Tunisia
| | - Kaouthar Feki
- Laboratoire Des Légumineuses, Centre de Biotechnologie de Bordj Cedria, BP901, CP2050 Hammam-Lif, Tunisia
| | - Dorsaf Hmidi
- Laboratoire Des Plantes Extrêmophiles (LPE), Centre de Biotechnologie de Bordj Cedria, BP901, CP2050 Hammam-Lif, Tunisia
| | - Khaled Masmoudi
- Biotechnology and Plant Improvement Laboratory, Centre of Biotechnology of Sfax (CBS), University of Sfax, BP “1177”, 3018 Sfax, Tunisia
- Arid Land Department, College of Food and Agriculture, Present Address: United Arab Emirates University, P.O. Box 15551, Al Ain, United Arab Emirates
| | - Faiçal Brini
- Biotechnology and Plant Improvement Laboratory, Centre of Biotechnology of Sfax (CBS), University of Sfax, BP “1177”, 3018 Sfax, Tunisia
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92
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Xiong H, Guo H, Xie Y, Zhao L, Gu J, Zhao S, Li J, Liu L. RNAseq analysis reveals pathways and candidate genes associated with salinity tolerance in a spaceflight-induced wheat mutant. Sci Rep 2017. [PMID: 28578401 DOI: 10.1038/s41598-41017-03024-41590] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/22/2023] Open
Abstract
Salinity stress has become an increasing threat to food security worldwide and elucidation of the mechanism for salinity tolerance is of great significance. Induced mutation, especially spaceflight mutagenesis, is one important method for crop breeding. In this study, we show that a spaceflight-induced wheat mutant, named salinity tolerance 1 (st1), is a salinity-tolerant line. We report the characteristics of transcriptomic sequence variation induced by spaceflight, and show that mutations in genes associated with sodium ion transport may directly contribute to salinity tolerance in st1. Furthermore, GO and KEGG enrichment analysis of differentially expressed genes (DEGs) between salinity-treated st1 and wild type suggested that the homeostasis of oxidation-reduction process is important for salt tolerance in st1. Through KEGG pathway analysis, "Butanoate metabolism" was identified as a new pathway for salinity responses. Additionally, key genes for salinity tolerance, such as genes encoding arginine decarboxylase, polyamine oxidase, hormones-related, were not only salt-induced in st1 but also showed higher expression in salt-treated st1 compared with salt-treated WT, indicating that these genes may play important roles in salinity tolerance in st1. This study presents valuable genetic resources for studies on transcriptome variation caused by induced mutation and the identification of salt tolerance genes in crops.
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Affiliation(s)
- Hongchun Xiong
- Institute of Crop Science, Chinese Academy of Agricultural Sciences/National Key Facility for Crop Gene Resources and Genetic Improvement, National Center of Space Mutagenesis for Crop Improvement, Beijing, 100081, China
| | - Huijun Guo
- Institute of Crop Science, Chinese Academy of Agricultural Sciences/National Key Facility for Crop Gene Resources and Genetic Improvement, National Center of Space Mutagenesis for Crop Improvement, Beijing, 100081, China
| | - Yongdun Xie
- Institute of Crop Science, Chinese Academy of Agricultural Sciences/National Key Facility for Crop Gene Resources and Genetic Improvement, National Center of Space Mutagenesis for Crop Improvement, Beijing, 100081, China
| | - Linshu Zhao
- Institute of Crop Science, Chinese Academy of Agricultural Sciences/National Key Facility for Crop Gene Resources and Genetic Improvement, National Center of Space Mutagenesis for Crop Improvement, Beijing, 100081, China
| | - Jiayu Gu
- Institute of Crop Science, Chinese Academy of Agricultural Sciences/National Key Facility for Crop Gene Resources and Genetic Improvement, National Center of Space Mutagenesis for Crop Improvement, Beijing, 100081, China
| | - Shirong Zhao
- Institute of Crop Science, Chinese Academy of Agricultural Sciences/National Key Facility for Crop Gene Resources and Genetic Improvement, National Center of Space Mutagenesis for Crop Improvement, Beijing, 100081, China
| | - Junhui Li
- Institute of Crop Science, Chinese Academy of Agricultural Sciences/National Key Facility for Crop Gene Resources and Genetic Improvement, National Center of Space Mutagenesis for Crop Improvement, Beijing, 100081, China
| | - Luxiang Liu
- Institute of Crop Science, Chinese Academy of Agricultural Sciences/National Key Facility for Crop Gene Resources and Genetic Improvement, National Center of Space Mutagenesis for Crop Improvement, Beijing, 100081, China.
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93
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RNAseq analysis reveals pathways and candidate genes associated with salinity tolerance in a spaceflight-induced wheat mutant. Sci Rep 2017; 7:2731. [PMID: 28578401 PMCID: PMC5457441 DOI: 10.1038/s41598-017-03024-0] [Citation(s) in RCA: 49] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2016] [Accepted: 04/20/2017] [Indexed: 12/23/2022] Open
Abstract
Salinity stress has become an increasing threat to food security worldwide and elucidation of the mechanism for salinity tolerance is of great significance. Induced mutation, especially spaceflight mutagenesis, is one important method for crop breeding. In this study, we show that a spaceflight-induced wheat mutant, named salinity tolerance 1 (st1), is a salinity-tolerant line. We report the characteristics of transcriptomic sequence variation induced by spaceflight, and show that mutations in genes associated with sodium ion transport may directly contribute to salinity tolerance in st1. Furthermore, GO and KEGG enrichment analysis of differentially expressed genes (DEGs) between salinity-treated st1 and wild type suggested that the homeostasis of oxidation-reduction process is important for salt tolerance in st1. Through KEGG pathway analysis, "Butanoate metabolism" was identified as a new pathway for salinity responses. Additionally, key genes for salinity tolerance, such as genes encoding arginine decarboxylase, polyamine oxidase, hormones-related, were not only salt-induced in st1 but also showed higher expression in salt-treated st1 compared with salt-treated WT, indicating that these genes may play important roles in salinity tolerance in st1. This study presents valuable genetic resources for studies on transcriptome variation caused by induced mutation and the identification of salt tolerance genes in crops.
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94
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Ismail AM, Horie T. Genomics, Physiology, and Molecular Breeding Approaches for Improving Salt Tolerance. ANNUAL REVIEW OF PLANT BIOLOGY 2017; 68:405-434. [PMID: 28226230 DOI: 10.1146/annurev-arplant-042916-040936] [Citation(s) in RCA: 222] [Impact Index Per Article: 31.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
Salt stress reduces land and water productivity and contributes to poverty and food insecurity. Increased salinization caused by human practices and climate change is progressively reducing agriculture productivity despite escalating calls for more food. Plant responses to salt stress are well understood, involving numerous critical processes that are each controlled by multiple genes. Knowledge of the critical mechanisms controlling salt uptake and exclusion from functioning tissues, signaling of salt stress, and the arsenal of protective metabolites is advancing. However, little progress has been made in developing salt-tolerant varieties of crop species using standard (but slow) breeding approaches. The genetic diversity available within cultivated crops and their wild relatives provides rich sources for trait and gene discovery that has yet to be sufficiently utilized. Transforming this knowledge into modern approaches using genomics and molecular tools for precision breeding will accelerate the development of tolerant cultivars and help sustain food production.
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Affiliation(s)
- Abdelbagi M Ismail
- Genetics and Biotechnology Division, International Rice Research Institute, Manila 1301, Philippines;
| | - Tomoaki Horie
- Division of Applied Biology, Faculty of Textile Science and Technology, Shinshu University, Ueda, Nagano 386-8567, Japan;
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95
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Padmanaban S, Zhang P, Hare RA, Sutherland MW, Martin A. Pentaploid Wheat Hybrids: Applications, Characterisation, and Challenges. FRONTIERS IN PLANT SCIENCE 2017; 8:358. [PMID: 28367153 PMCID: PMC5355473 DOI: 10.3389/fpls.2017.00358] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/09/2016] [Accepted: 03/01/2017] [Indexed: 05/09/2023]
Abstract
Interspecific hybridisation between hexaploid and tetraploid wheat species leads to the development of F1 pentaploid hybrids with unique chromosomal constitutions. Pentaploid hybrids derived from bread wheat (Triticum aestivum L.) and durum wheat (Triticum turgidum spp. durum Desf.) crosses can improve the genetic background of either parent by transferring traits of interest. The genetic variability derived from bread and durum wheat and transferred into pentaploid hybrids has the potential to improve disease resistance, abiotic tolerance, and grain quality, and to enhance agronomic characters. Nonetheless, pentaploid wheat hybrids have not been fully exploited in breeding programs aimed at improving crops. There are several potential barriers for efficient pentaploid wheat production, such as low pollen compatibility, poor seed set, failed seedling establishment, and frequent sterility in F1 hybrids. However, most of the barriers can be overcome by careful selection of the parental genotypes and by employing the higher ploidy level genotype as the maternal parent. In this review, we summarize the current research on pentaploid wheat hybrids and analyze the advantages and pitfalls of current methods used to assess pentaploid-derived lines. Furthermore, we discuss current and potential applications in commercial breeding programs and future directions for research into pentaploid wheat.
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Affiliation(s)
- Sriram Padmanaban
- Centre for Crop Health, University of Southern Queensland, ToowoombaQLD, Australia
| | - Peng Zhang
- Plant Breeding Institute, The University of Sydney, SydneyNSW, Australia
| | - Ray A. Hare
- Centre for Crop Health, University of Southern Queensland, ToowoombaQLD, Australia
| | - Mark W. Sutherland
- Centre for Crop Health, University of Southern Queensland, ToowoombaQLD, Australia
| | - Anke Martin
- Centre for Crop Health, University of Southern Queensland, ToowoombaQLD, Australia
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96
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Linc G, Gaál E, Molnár I, Icsó D, Badaeva E, Molnár-Láng M. Molecular cytogenetic (FISH) and genome analysis of diploid wheatgrasses and their phylogenetic relationship. PLoS One 2017; 12:e0173623. [PMID: 28278169 PMCID: PMC5344461 DOI: 10.1371/journal.pone.0173623] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2016] [Accepted: 02/23/2017] [Indexed: 11/22/2022] Open
Abstract
This paper reports detailed FISH-based karyotypes for three diploid wheatgrass species Agropyron cristatum (L.) Beauv., Thinopyrum bessarabicum (Savul.&Rayss) A. Löve, Pseudoroegneria spicata (Pursh) A. Löve, the supposed ancestors of hexaploid Thinopyrum intermedium (Host) Barkworth & D.R.Dewey, compiled using DNA repeats and comparative genome analysis based on COS markers. Fluorescence in situ hybridization (FISH) with repetitive DNA probes proved suitable for the identification of individual chromosomes in the diploid JJ, StSt and PP genomes. Of the seven microsatellite markers tested only the (GAA)n trinucleotide sequence was appropriate for use as a single chromosome marker for the P. spicata AS chromosome. Based on COS marker analysis, the phylogenetic relationship between diploid wheatgrasses and the hexaploid bread wheat genomes was established. These findings confirmed that the J and E genomes are in neighbouring clusters.
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Affiliation(s)
- Gabriella Linc
- Department of Plant Genetic Resources, Agricultural Institute, Centre for Agricultural Research, Hungarian Academy of Sciences, Martonvásár, Hungary
- * E-mail:
| | - Eszter Gaál
- Department of Plant Genetic Resources, Agricultural Institute, Centre for Agricultural Research, Hungarian Academy of Sciences, Martonvásár, Hungary
| | - István Molnár
- Department of Plant Genetic Resources, Agricultural Institute, Centre for Agricultural Research, Hungarian Academy of Sciences, Martonvásár, Hungary
| | - Diana Icsó
- Department of Plant Genetic Resources, Agricultural Institute, Centre for Agricultural Research, Hungarian Academy of Sciences, Martonvásár, Hungary
| | - Ekaterina Badaeva
- Vavilov Institute of General Genetics, Russian Academy of Sciences, Moscow, Russia
| | - Márta Molnár-Láng
- Department of Plant Genetic Resources, Agricultural Institute, Centre for Agricultural Research, Hungarian Academy of Sciences, Martonvásár, Hungary
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97
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Lou H, Dong L, Zhang K, Wang DW, Zhao M, Li Y, Rong C, Qin H, Zhang A, Dong Z, Wang D. High-throughput mining of E-genome-specific SNPs for characterizingThinopyrum elongatumintrogressions in common wheat. Mol Ecol Resour 2017; 17:1318-1329. [DOI: 10.1111/1755-0998.12659] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2015] [Revised: 12/25/2016] [Accepted: 01/30/2017] [Indexed: 01/01/2023]
Affiliation(s)
- Haijuan Lou
- The State Key Laboratory of Plant Cell and Chromosome Engineering; Institute of Genetics and Developmental Biology; Chinese Academy of Sciences; Beijing 100101 China
- University of Chinese Academy of Sciences; Beijing 100049 China
| | - Lingli Dong
- The State Key Laboratory of Plant Cell and Chromosome Engineering; Institute of Genetics and Developmental Biology; Chinese Academy of Sciences; Beijing 100101 China
| | - Kunpu Zhang
- The State Key Laboratory of Plant Cell and Chromosome Engineering; Institute of Genetics and Developmental Biology; Chinese Academy of Sciences; Beijing 100101 China
| | - Da-Wei Wang
- The State Key Laboratory of Plant Cell and Chromosome Engineering; Institute of Genetics and Developmental Biology; Chinese Academy of Sciences; Beijing 100101 China
- University of Chinese Academy of Sciences; Beijing 100049 China
| | - Maolin Zhao
- The State Key Laboratory of Plant Cell and Chromosome Engineering; Institute of Genetics and Developmental Biology; Chinese Academy of Sciences; Beijing 100101 China
| | - Yiwen Li
- The State Key Laboratory of Plant Cell and Chromosome Engineering; Institute of Genetics and Developmental Biology; Chinese Academy of Sciences; Beijing 100101 China
| | - Chaowu Rong
- The State Key Laboratory of Plant Cell and Chromosome Engineering; Institute of Genetics and Developmental Biology; Chinese Academy of Sciences; Beijing 100101 China
| | - Huanju Qin
- The State Key Laboratory of Plant Cell and Chromosome Engineering; Institute of Genetics and Developmental Biology; Chinese Academy of Sciences; Beijing 100101 China
| | - Aimin Zhang
- The State Key Laboratory of Plant Cell and Chromosome Engineering; Institute of Genetics and Developmental Biology; Chinese Academy of Sciences; Beijing 100101 China
| | - Zhenying Dong
- The State Key Laboratory of Plant Cell and Chromosome Engineering; Institute of Genetics and Developmental Biology; Chinese Academy of Sciences; Beijing 100101 China
| | - Daowen Wang
- The State Key Laboratory of Plant Cell and Chromosome Engineering; Institute of Genetics and Developmental Biology; Chinese Academy of Sciences; Beijing 100101 China
- The Collaborative Innovation Center for Grain Crops; Henan Agricultural University; Zhengzhou 450002 China
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98
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Orsenigo S, Guzzon F, Abeli T, Rossi G, Vagge I, Balestrazzi A, Mondoni A, Müller JV. Comparative germination responses to water potential across different populations of Aegilops geniculata and cultivar varieties of Triticum durum and Triticum aestivum. PLANT BIOLOGY (STUTTGART, GERMANY) 2017; 19:165-171. [PMID: 27917571 DOI: 10.1111/plb.12528] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/18/2015] [Accepted: 11/28/2016] [Indexed: 06/06/2023]
Abstract
Crop Wild Relatives are often used to improve crop quality and yields because they contain genetically important traits that can contribute to stress resistance and adaptation. Seed germination of different populations of Aegilops geniculata Roth collected along a latitudinal gradient was studied under different drought stress in order to find populations suitable for improving drought tolerance in wheat. Different accessions of Aegilops neglecta Req. ex Bertol., Triticum aestivum L. and T. durum Desf. were used as comparison. Under full hydration, germination was high in all populations, but increasing drought stress led to reduced and delayed germination. Significant differences in final germination and mean time to germinate were detected among populations. Wheat, durum wheat and the southern population of Ae. geniculata were not significantly affected by drought stress, germinating similarly under all treatments. However, seed germination of the northern populations of Ae. geniculata was significantly reduced under high water stress treatment. Differences between populations of the same species could not be explained by annual rainfall across populations' distributions, but by rainfall during seed development and maturation. Differences in the germination responses to drought found here highlight the importance of source populations as criteria for genotype selection for pre-breeders.
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Affiliation(s)
- S Orsenigo
- Department of Agricultural and Environmental Sciences - Production, Landscape, Agroenergy, University of Milan, Milan, Italy
| | - F Guzzon
- Department of Earth and Environmental Sciences, University of Pavia, Pavia, Italy
| | - T Abeli
- Department of Earth and Environmental Sciences, University of Pavia, Pavia, Italy
| | - G Rossi
- Department of Earth and Environmental Sciences, University of Pavia, Pavia, Italy
| | - I Vagge
- Department of Agricultural and Environmental Sciences - Production, Landscape, Agroenergy, University of Milan, Milan, Italy
| | - A Balestrazzi
- Department of Biology and Biotechnology "L. Spallanzani", University of Pavia, Pavia, Italy
| | - A Mondoni
- Department of Earth and Environmental Sciences, University of Pavia, Pavia, Italy
| | - J V Müller
- Millennium Seed Bank, Conservation Science Department, Royal Botanic Gardens Kew, Wakehurst Place, UK
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99
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Garriga M, Raddatz N, Véry AA, Sentenac H, Rubio-Meléndez ME, González W, Dreyer I. Cloning and functional characterization of HKT1 and AKT1 genes of Fragaria spp.-Relationship to plant response to salt stress. JOURNAL OF PLANT PHYSIOLOGY 2017; 210:9-17. [PMID: 28039842 DOI: 10.1016/j.jplph.2016.12.007] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/05/2016] [Revised: 12/08/2016] [Accepted: 12/11/2016] [Indexed: 05/03/2023]
Abstract
Commercial strawberry, Fragaria x ananassa Duch., is a species sensitive to salinity. Under saline conditions, Na+ uptake by the plant is increased, while K+ uptake is significantly reduced. Maintaining an adequate K+/Na+ cytosolic ratio determines the ability of the plant to survive in saline environments. The goal of the present work was to clone and functionally characterize the genes AKT1 and HKT1 involved in K+ and Na+ transport in strawberry and to determine the relationship of these genes with the responses of three Fragaria spp. genotypes having different ecological adaptations to salt stress. FaHKT1 and FcHKT1 proteins from F. x ananassa and F. chiloensis have 98.1% of identity, while FaAKT1 and FcAKT1 identity is 99.7%. FaHKT1 and FaAKT1 from F. x ananassa, were functionally characterized in Xenopus oocytes. FaHKT1, belongs to the group I of HKT transporters and is selective for Na+. Expression of FaAKT1 in oocytes showed that the protein is a typical inward-rectifying and highly K+-selective channel. The relative expression of Fragaria HKT1 and AKT1 genes was studied in roots of F. x ananassa cv. Camarosa and of F. chiloensis (accessions Bau and Cucao) grown under salt stress. The expression of AKT1 was transiently increased in 'Camarosa', decreased in 'Cucao' and was not affected in 'Bau' upon salt stress. HKT1 expression was significantly increased in roots of 'Cucao' and was not affected in the other two genotypes. The increased relative expression of HKT1 and decreased expression of AKT1 in 'Cucao' roots correlates with the higher tolerance to salinity of this genotype in comparison with 'Camarosa' and 'Bau'.
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Affiliation(s)
- Miguel Garriga
- Facultad de Ciencias Agrarias, Universidad de Talca, Casilla 747, Talca, Chile.
| | - Natalia Raddatz
- Plant Biophysics, Centro de Biotecnología y Genómica de Plantas, Universidad Politécnica de Madrid (UPM), Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria (INIA), E-28223 Pozuelo de Alarcón, Madrid, Spain
| | - Anne-Aliénor Véry
- Biochimie et Physiologie Moléculaire des Plantes, UMR 5004, ENSA.M INRA CNRS UMII, 34060 Montpellier, Cedex 2, France
| | - Hervé Sentenac
- Biochimie et Physiologie Moléculaire des Plantes, UMR 5004, ENSA.M INRA CNRS UMII, 34060 Montpellier, Cedex 2, France
| | - María E Rubio-Meléndez
- Facultad de Ciencias Agrarias, Universidad de Talca, Casilla 747, Talca, Chile; Instituto de Ciencias Biológicas, Universidad de Talca, Casilla 747, Talca, Chile
| | - Wendy González
- Centro de Bioinformática y Simulación Molecular, Universidad de Talca, Casilla 721, Talca, Chile
| | - Ingo Dreyer
- Plant Biophysics, Centro de Biotecnología y Genómica de Plantas, Universidad Politécnica de Madrid (UPM), Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria (INIA), E-28223 Pozuelo de Alarcón, Madrid, Spain; Centro de Bioinformática y Simulación Molecular, Universidad de Talca, Casilla 721, Talca, Chile.
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100
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Development of intron targeting (IT) markers specific for chromosome arm 4VS of Haynaldia villosa by chromosome sorting and next-generation sequencing. BMC Genomics 2017; 18:167. [PMID: 28202009 PMCID: PMC5310052 DOI: 10.1186/s12864-017-3567-z] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2016] [Accepted: 02/07/2017] [Indexed: 12/31/2022] Open
Abstract
Background Haynaldia villosa (L.) Schur (syn. Dasypyrum villosum L. Candargy, 2n = 14, genome VV) is the tertiary gene pool of wheat, and thus a potential resource of genes for wheat improvement. Among other, wheat yellow mosaic (WYM) resistance gene Wss1 and a take-all resistance gene were identified on the short arm of chromosome 4 V (4VS) of H. villosa. We had obtained introgressions on 4VS chromosome arm, with the objective of utilizing the target genes. However, monitoring these introgressions has been a daunting task because of inadequate knowledge as to H.villosa genome, as reflected by the lack of specific markers. Results This study aims to develop 4VS-specific markers by combination of chromosome sorting and next-generation sequencing. The short arm of chromosome 4VS of H.villosa was flow-sorted using a FACSVantage SE flow cytometer and sorter, and then sequenced by Illumina sequencing. The sequence of H. villosa 4VS was assembled by the software Hecate, and then was compared with the sequence assemblies of wheat chromosome arms 4AL, 4BS and 4DS and Ae. tauschii 4DS, with the objectives of identifying exon-exon junctions and localizing introns on chromosome 4VS of H. villosa. The intron length polymorphisms suitable for designing H. villosa primers were evaluated with criteria. Consequently, we designed a total of 359 intron targeting (IT) markers, among which 232 (64.62%) markers were specific for tracing the 4VS chromatin in the wheat background. Conclusion The combination of chromosome sorting and next-generation sequencing to develop specific IT markers for 4VS of H. villosa has high success rate and specificity, thus being applicable for the development of chromosome-specific markers for alien chromatin in wheat breeding. Electronic supplementary material The online version of this article (doi:10.1186/s12864-017-3567-z) contains supplementary material, which is available to authorized users.
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