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Liu B, Li M, Qiu J, Xue J, Liu W, Cheng Q, Zhao H, Xue Y, Nasrallah ME, Nasrallah JB, Liu P. A pollen selection system links self and interspecific incompatibility in the Brassicaceae. Nat Ecol Evol 2024; 8:1129-1139. [PMID: 38637692 DOI: 10.1038/s41559-024-02399-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2023] [Accepted: 03/19/2024] [Indexed: 04/20/2024]
Abstract
Self-incompatibility and recurrent transitions to self-compatibility have shaped the extant mating systems underlying the nonrandom mating critical for speciation in angiosperms. Linkage between self-incompatibility and speciation is illustrated by the shared pollen rejection pathway between self-incompatibility and interspecific unilateral incompatibility (UI) in the Brassicaceae. However, the pollen discrimination system that activates this shared pathway for heterospecific pollen rejection remains unknown. Here we show that Stigma UI3.1, the genetically identified stigma determinant of UI in Arabidopsis lyrata × Arabidopsis arenosa crosses, encodes the S-locus-related glycoprotein 1 (SLR1). Heterologous expression of A. lyrata or Capsella grandiflora SLR1 confers on some Arabidopsis thaliana accessions the ability to discriminate against heterospecific pollen. Acquisition of this ability also requires a functional S-locus receptor kinase (SRK), whose ligand-induced dimerization activates the self-pollen rejection pathway in the stigma. SLR1 interacts with SRK and interferes with SRK homomer formation. We propose a pollen discrimination system based on competition between basal or ligand-induced SLR1-SRK and SRK-SRK complex formation. The resulting SRK homomer levels would be sensed by the common pollen rejection pathway, allowing discrimination among conspecific self- and cross-pollen as well as heterospecific pollen. Our results establish a mechanistic link at the pollen recognition phase between self-incompatibility and interspecific incompatibility.
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Affiliation(s)
- Bo Liu
- State Key Laboratory of Nutrient Use and Management, Department of Ecology, College of Resources and Environmental Sciences, China Agricultural University, Beijing, China
- State Key Laboratory of Cotton Biology, School of Life Sciences, Henan University, Kaifeng, China
| | - Mengya Li
- State Key Laboratory of Nutrient Use and Management, Department of Ecology, College of Resources and Environmental Sciences, China Agricultural University, Beijing, China
| | - Jianfang Qiu
- State Key Laboratory of Nutrient Use and Management, Department of Ecology, College of Resources and Environmental Sciences, China Agricultural University, Beijing, China
| | - Jing Xue
- State Key Laboratory of Nutrient Use and Management, Department of Ecology, College of Resources and Environmental Sciences, China Agricultural University, Beijing, China
| | - Wenhong Liu
- State Key Laboratory of Nutrient Use and Management, Department of Ecology, College of Resources and Environmental Sciences, China Agricultural University, Beijing, China
| | - Qingqing Cheng
- State Key Laboratory of Nutrient Use and Management, Department of Ecology, College of Resources and Environmental Sciences, China Agricultural University, Beijing, China
| | - Hainan Zhao
- State Key Laboratory of Nutrient Use and Management, Department of Ecology, College of Resources and Environmental Sciences, China Agricultural University, Beijing, China
| | - Yongbiao Xue
- Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, China
| | - Mikhail E Nasrallah
- Section of Plant Biology, School of Integrative Plant Science, Cornell University, Ithaca, NY, USA
| | - June B Nasrallah
- Section of Plant Biology, School of Integrative Plant Science, Cornell University, Ithaca, NY, USA
| | - Pei Liu
- State Key Laboratory of Nutrient Use and Management, Department of Ecology, College of Resources and Environmental Sciences, China Agricultural University, Beijing, China.
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2
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Zhong S, Zhao P, Peng X, Li HJ, Duan Q, Cheung AY. From gametes to zygote: Mechanistic advances and emerging possibilities in plant reproduction. PLANT PHYSIOLOGY 2024; 195:4-35. [PMID: 38431529 PMCID: PMC11060694 DOI: 10.1093/plphys/kiae125] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/12/2023] [Revised: 02/13/2024] [Accepted: 02/13/2024] [Indexed: 03/05/2024]
Affiliation(s)
- Sheng Zhong
- State Key Laboratory for Protein and Plant Gene Research, Peking-Tsinghua Center for Life Sciences, New Cornerstone Science Laboratory, College of Life Sciences, Peking University, Beijing 100871, China
| | - Peng Zhao
- State Key Laboratory of Hybrid Rice, College of Life Sciences, Wuhan University, Wuhan 430072, China
- Hubei Hongshan Laboratory, Wuhan 430070, China
| | - Xiongbo Peng
- State Key Laboratory of Hybrid Rice, College of Life Sciences, Wuhan University, Wuhan 430072, China
- Hubei Hongshan Laboratory, Wuhan 430070, China
| | - Hong-Ju Li
- Key Laboratory of Seed Innovation, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Center for Molecular Agrobiology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China
| | - Qiaohong Duan
- College of Horticulture Science and Engineering, Shandong Agricultural University, Tai’an, Shandong 271018, China
| | - Alice Y Cheung
- Department of Biochemistry and Molecular Biology, Molecular and Cellular Biology Program, Plant Biology Graduate Program, University of Massachusetts, Amherst, MA 01003, USA
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3
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Gu J, Guan Z, Jiao Y, Liu K, Hong D. The story of a decade: Genomics, functional genomics, and molecular breeding in Brassica napus. PLANT COMMUNICATIONS 2024; 5:100884. [PMID: 38494786 PMCID: PMC11009362 DOI: 10.1016/j.xplc.2024.100884] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Revised: 03/01/2024] [Accepted: 03/14/2024] [Indexed: 03/19/2024]
Abstract
Rapeseed (Brassica napus L.) is one of the major global sources of edible vegetable oil and is also used as a feed and pioneer crop and for sightseeing and industrial purposes. Improvements in genome sequencing and molecular marker technology have fueled a boom in functional genomic studies of major agronomic characters such as yield, quality, flowering time, and stress resistance. Moreover, introgression and pyramiding of key functional genes have greatly accelerated the genetic improvement of important traits. Here we summarize recent progress in rapeseed genomics and genetics, and we discuss effective molecular breeding strategies by exploring these findings in rapeseed. These insights will extend our understanding of the molecular mechanisms and regulatory networks underlying agronomic traits and facilitate the breeding process, ultimately contributing to more sustainable agriculture throughout the world.
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Affiliation(s)
- Jianwei Gu
- National Key Laboratory of Crop Genetic Improvement, Hubei Hongshan Laboratory, Huazhong Agricultural University, Wuhan 430070, Hubei, China; College of Life Science and Technology, Hubei Engineering University, Xiaogan 432100 Hubei, China
| | - Zhilin Guan
- National Key Laboratory of Crop Genetic Improvement, Hubei Hongshan Laboratory, Huazhong Agricultural University, Wuhan 430070, Hubei, China; Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan 430074 Hubei, China
| | - Yushun Jiao
- National Key Laboratory of Crop Genetic Improvement, Hubei Hongshan Laboratory, Huazhong Agricultural University, Wuhan 430070, Hubei, China
| | - Kede Liu
- National Key Laboratory of Crop Genetic Improvement, Hubei Hongshan Laboratory, Huazhong Agricultural University, Wuhan 430070, Hubei, China.
| | - Dengfeng Hong
- National Key Laboratory of Crop Genetic Improvement, Hubei Hongshan Laboratory, Huazhong Agricultural University, Wuhan 430070, Hubei, China; Yazhouwan National Laboratory, Sanya 572024 Hainan, China.
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4
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Hu D, Lin D, Yi S, Gao S, Lei T, Li W, Xu T. Comparative stigmatic transcriptomics reveals self and cross pollination responses to heteromorphic incompatibility in Plumbago auriculata Lam. Front Genet 2024; 15:1372644. [PMID: 38510275 PMCID: PMC10953596 DOI: 10.3389/fgene.2024.1372644] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2024] [Accepted: 02/12/2024] [Indexed: 03/22/2024] Open
Abstract
"Heteromorphic self-incompatibility" (HetSI) in plants is a mechanism of defense to avoid self-pollination and promote outcrossing. However, the molecular mechanism underlying HetSI remains largely unknown. In this study, RNA-seq was conducted to explore the molecular mechanisms underlying self-compatible (SC, "T × P" and "P × T") and self-incompatible (SI, "T × T" and "P × P") pollination in the two types of flowers of Plumbago auriculata Lam. which is a representative HetSI plant. By comparing "T × P" vs. "T × T", 3773 (1407 upregulated and 2366 downregulated) differentially expressed genes (DEGs) were identified, 1261 DEGs between "P × T" and "P × P" (502 upregulated and 759 downregulated). The processes in which these DEGs were significantly enriched were "MAPK (Mitogen-Activated Protein Kinases-plant) signaling pathway", "plant-pathogen interaction","plant hormone signal transduction", and "pentose and glucuronate interconversion" pathways. Surprisingly, we discovered that under various pollination conditions, multiple notable genes that may be involved in HetSI exhibited distinct regulation. We can infer that the HetSI strategy might be unique in P. auriculata. It was similar to "sporophytic self-incompatibility" (SSI) but the HetSI mechanisms in pin and thrum flowers are diverse. In this study, new hypotheses and inferences were proposed, which can provide a reference for crop production and breeding.
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Affiliation(s)
- Di Hu
- College of Fine Art and Calligraphy, Sichuan Normal University, Chengdu, China
| | - Di Lin
- Sichuan Certification and Accreditation Association, Chengdu, China
| | - Shouli Yi
- College of Fine Art and Calligraphy, Sichuan Normal University, Chengdu, China
| | - Suping Gao
- College of Landscape Architecture, Sichuan Agricultural University, Chengdu, China
| | - Ting Lei
- College of Landscape Architecture, Sichuan Agricultural University, Chengdu, China
| | - Wenji Li
- School of Design, Chongqing Industry Polytechnic College, Chongqing, China
| | - Tingdan Xu
- College of Fine Art and Calligraphy, Sichuan Normal University, Chengdu, China
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Heo SH, Kim SY, Mo SY, Park HY. Development of S Haplotype-Specific Markers to Identify Genotypes of Self-Incompatibility in Radish ( Raphanus sativus L.). PLANTS (BASEL, SWITZERLAND) 2024; 13:725. [PMID: 38475571 DOI: 10.3390/plants13050725] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2024] [Revised: 02/25/2024] [Accepted: 03/01/2024] [Indexed: 03/14/2024]
Abstract
Radish (Raphanus sativus L.), a root vegetable belonging to the Brassicaceae family, is considered one of the representative crops displaying sporophytic self-incompatibility (SSI). The utilization of a self-incompatibility system in F1 breeding can improve the efficiency of cross-combinations, leading to a reduction in breeding time and aiding in the development of novel F1 varieties. The successful implementation of this system necessitates the rapid and accurate identification of S haplotypes in parental lines. In this study, we identified a total of nine S haplotypes among 22 elite radish lines through Sanger sequencing. Subsequently, we obtained sequences for showing a 95% similarity to nine S haplotypes, along with sequences identified by other researchers using BLAST. Following this, multiple sequence alignment (MSA) was conducted to identify SRK and SLG sequence similarities, as well as polymorphisms within the class I and II groups. Subsequently, S haplotype-specific marker sets were developed, targeting polymorphic regions of SRK and SLG alleles. These markers successfully amplified each of the nine S haplotypes. These markers will play a crucial role in the rapid and precise identification of parental S haplotypes in the radish F1 breeding process, proving instrumental in the radish F1 purity test.
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Affiliation(s)
- Seong-Ho Heo
- Department of Bioresources Engineering, Sejong University, Seoul 05006, Republic of Korea
- Institute of Breeding Research, DASAN Co., Ltd., Pyeongtaek 17864, Republic of Korea
| | - Su-Yeon Kim
- Department of Bioresources Engineering, Sejong University, Seoul 05006, Republic of Korea
| | - Suk-Yeon Mo
- Department of Bioresources Engineering, Sejong University, Seoul 05006, Republic of Korea
| | - Han-Yong Park
- Department of Bioresources Engineering, Sejong University, Seoul 05006, Republic of Korea
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6
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Brainard SH, Sanders DM, Bruna T, Shu S, Dawson JC. The first two chromosome-scale genome assemblies of American hazelnut enable comparative genomic analysis of the genus Corylus. PLANT BIOTECHNOLOGY JOURNAL 2024; 22:472-483. [PMID: 37870930 PMCID: PMC10826982 DOI: 10.1111/pbi.14199] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/08/2023] [Revised: 09/11/2023] [Accepted: 09/29/2023] [Indexed: 10/25/2023]
Abstract
The native, perennial shrub American hazelnut (Corylus americana) is cultivated in the Midwestern United States for its significant ecological benefits, as well as its high-value nut crop. Implementation of modern breeding methods and quantitative genetic analyses of C. americana requires high-quality reference genomes, a resource that is currently lacking. We therefore developed the first chromosome-scale assemblies for this species using the accessions 'Rush' and 'Winkler'. Genomes were assembled using HiFi PacBio reads and Arima Hi-C data, and Oxford Nanopore reads and a high-density genetic map were used to perform error correction. N50 scores are 31.9 Mb and 35.3 Mb, with 90.2% and 97.1% of the total genome assembled into the 11 pseudomolecules, for 'Rush' and 'Winkler', respectively. Gene prediction was performed using custom RNAseq libraries and protein homology data. 'Rush' has a BUSCO score of 99.0 for its assembly and 99.0 for its annotation, while 'Winkler' had corresponding scores of 96.9 and 96.5, indicating high-quality assemblies. These two independent assemblies enable unbiased assessment of structural variation within C. americana, as well as patterns of syntenic relationships across the Corylus genus. Furthermore, we identified high-density SNP marker sets from genotyping-by-sequencing data using 1343 C. americana, C. avellana and C. americana × C. avellana hybrids, in order to assess population structure in natural and breeding populations. Finally, the transcriptomes of these assemblies, as well as several other recently published Corylus genomes, were utilized to perform phylogenetic analysis of sporophytic self-incompatibility (SSI) in hazelnut, providing evidence of unique molecular pathways governing self-incompatibility in Corylus.
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Affiliation(s)
- Scott H. Brainard
- Department of Plant and Agroecosystem SciencesUniversity of Wisconsin‐MadisonMadisonWisconsinUSA
| | - Dean M. Sanders
- University of Wisconsin Biotechnology CenterUniversity of Wisconsin‐MadisonMadisonWisconsinUSA
| | - Tomas Bruna
- U.S. Department of Energy Joint Genome InstituteLawrence Berkeley National LaboratoryBerkeleyCaliforniaUSA
| | - Shengqiang Shu
- U.S. Department of Energy Joint Genome InstituteLawrence Berkeley National LaboratoryBerkeleyCaliforniaUSA
| | - Julie C. Dawson
- Department of Plant and Agroecosystem SciencesUniversity of Wisconsin‐MadisonMadisonWisconsinUSA
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7
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Bala M, Rehana S, Singh MP. Self-incompatibility: a targeted, unexplored pre-fertilization barrier in flower crops of Asteraceae. JOURNAL OF PLANT RESEARCH 2023; 136:587-612. [PMID: 37452973 DOI: 10.1007/s10265-023-01480-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Accepted: 07/03/2023] [Indexed: 07/18/2023]
Abstract
Asteraceae (synonym as Compositae) is one of the largest angiosperm families among flowering plants comprising one-tenth of all agri-horticultural species grown across various habitats except in Antarctica. These are commercially utilized as cut and loose flowers as well as pot and bedding plants in landscape gardens due to their unique floral traits. Consequently, ineffective seed setting and presence of an intraspecific reproductive barrier known as self-incompatibility (SI) severely reduces the effectiveness of hybridization and self-fertilization by traditional crossing. There have been very few detailed studies of pollen-stigma interactions in this family. Moreover, about 63% of Aster species can barely self-fertilize due to self-incompatibility (SI). The chrysanthemum (Chrysanthemum × morifolium) is one of the most economically important ornamental plants in the Asteraceae family which hugely shows incompatibility. Reasons for the low fertility and reproductive capacity of species are still indefinite or not clear. Hence, the temporal pattern of inheritance of self-incompatibility and its effect on reproductive biology needs to be investigated further to improve the breeding efficiency. This review highlights the self-incompatible (SI) system operating in important Astraceous (ornamental) crops which are adversely affected by this mechanism along with different physiological and molecular techniques involved in breaking down self-incompatibility.
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Affiliation(s)
- Madhu Bala
- Department of Floriculture and Landscaping, Punjab Agricultural University, Ludhiana, Punjab, 141 004, India.
| | - Shaik Rehana
- Department of Floriculture and Landscaping, Punjab Agricultural University, Ludhiana, Punjab, 141 004, India
| | - Mohini Prabha Singh
- Department of Floriculture and Landscaping, Punjab Agricultural University, Ludhiana, Punjab, 141 004, India
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Katche EI, Schierholt A, Schiessl SV, He F, Lv Z, Batley J, Becker HC, Mason AS. Genetic factors inherited from both diploid parents interact to affect genome stability and fertility in resynthesized allotetraploid Brassica napus. G3 (BETHESDA, MD.) 2023; 13:jkad136. [PMID: 37313757 PMCID: PMC10411605 DOI: 10.1093/g3journal/jkad136] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/24/2023] [Revised: 04/24/2023] [Accepted: 05/31/2023] [Indexed: 06/15/2023]
Abstract
Established allopolyploids are known to be genomically stable and fertile. However, in contrast, most newly resynthesized allopolyploids are infertile and meiotically unstable. Identifying the genetic factors responsible for genome stability in newly formed allopolyploid is key to understanding how 2 genomes come together to form a species. One hypothesis is that established allopolyploids may have inherited specific alleles from their diploid progenitors which conferred meiotic stability. Resynthesized Brassica napus lines are often unstable and infertile, unlike B. napus cultivars. We tested this hypothesis by characterizing 41 resynthesized B. napus lines produced by crosses between 8 Brassica rapa and 8 Brassica oleracea lines for copy number variation resulting from nonhomologous recombination events and fertility. We resequenced 8 B. rapa and 5 B. oleracea parent accessions and analyzed 19 resynthesized lines for allelic variation in a list of meiosis gene homologs. SNP genotyping was performed using the Illumina Infinium Brassica 60K array for 3 individuals per line. Self-pollinated seed set and genome stability (number of copy number variants) were significantly affected by the interaction between both B. rapa and B. oleracea parental genotypes. We identified 13 putative meiosis gene candidates which were significantly associated with frequency of copy number variants and which contained putatively harmful mutations in meiosis gene haplotypes for further investigation. Our results support the hypothesis that allelic variants inherited from parental genotypes affect genome stability and fertility in resynthesized rapeseed.
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Affiliation(s)
- Elizabeth Ihien Katche
- Plant Breeding Department, University of Bonn, Bonn 53115, Germany
- Department of Plant Breeding, Justus Liebig University, Giessen 35392, Germany
| | - Antje Schierholt
- Department of Crop Sciences, Division of Plant Breeding Methodology, Georg-August University Göttingen, Göttingen 37073, Germany
| | - Sarah-Veronica Schiessl
- Department of Plant Breeding, Justus Liebig University, Giessen 35392, Germany
- Department of Botany and Molecular Evolution, Senckenberg Research Institute and Natural History Museum Frankfurt, Frankfurt am Main D-60325, Germany
| | - Fei He
- Plant Breeding Department, University of Bonn, Bonn 53115, Germany
| | - Zhenling Lv
- Plant Breeding Department, University of Bonn, Bonn 53115, Germany
- Department of Plant Breeding, Justus Liebig University, Giessen 35392, Germany
| | - Jacqueline Batley
- School of Biological Sciences, University of Western Australia, Perth, WA 6009, Australia
| | - Heiko C Becker
- Department of Crop Sciences, Division of Plant Breeding Methodology, Georg-August University Göttingen, Göttingen 37073, Germany
| | - Annaliese S Mason
- Plant Breeding Department, University of Bonn, Bonn 53115, Germany
- Department of Plant Breeding, Justus Liebig University, Giessen 35392, Germany
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Kolesnikova UK, Scott AD, Van de Velde JD, Burns R, Tikhomirov NP, Pfordt U, Clarke AC, Yant L, Seregin AP, Vekemans X, Laurent S, Novikova PY. Transition to Self-compatibility Associated With Dominant S-allele in a Diploid Siberian Progenitor of Allotetraploid Arabidopsis kamchatica Revealed by Arabidopsis lyrata Genomes. Mol Biol Evol 2023; 40:msad122. [PMID: 37432770 PMCID: PMC10335350 DOI: 10.1093/molbev/msad122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/13/2023] Open
Abstract
A transition to selfing can be beneficial when mating partners are scarce, for example, due to ploidy changes or at species range edges. Here, we explain how self-compatibility evolved in diploid Siberian Arabidopsis lyrata, and how it contributed to the establishment of allotetraploid Arabidopsis kamchatica. First, we provide chromosome-level genome assemblies for two self-fertilizing diploid A. lyrata accessions, one from North America and one from Siberia, including a fully assembled S-locus for the latter. We then propose a sequence of events leading to the loss of self-incompatibility in Siberian A. lyrata, date this independent transition to ∼90 Kya, and infer evolutionary relationships between Siberian and North American A. lyrata, showing an independent transition to selfing in Siberia. Finally, we provide evidence that this selfing Siberian A. lyrata lineage contributed to the formation of the allotetraploid A. kamchatica and propose that the selfing of the latter is mediated by the loss-of-function mutation in a dominant S-allele inherited from A. lyrata.
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Affiliation(s)
- Uliana K Kolesnikova
- Department of Chromosome Biology, Max Planck Institute for Plant Breeding Research, Cologne, Germany
| | - Alison Dawn Scott
- Department of Chromosome Biology, Max Planck Institute for Plant Breeding Research, Cologne, Germany
| | - Jozefien D Van de Velde
- Department of Chromosome Biology, Max Planck Institute for Plant Breeding Research, Cologne, Germany
| | - Robin Burns
- Department of Plant Sciences, University of Cambridge, Cambridge, United Kingdom
| | - Nikita P Tikhomirov
- Faculty of Biology, Lomonosov Moscow State University, Moscow, Russia
- Papanin Institute for Biology of Inland Waters, Russian Academy of Sciences, Borok, Russia
| | - Ursula Pfordt
- Department of Chromosome Biology, Max Planck Institute for Plant Breeding Research, Cologne, Germany
| | - Andrew C Clarke
- Future Food Beacon of Excellence and School of Biosciences, University of Nottingham, Sutton Bonington, United Kingdom
| | - Levi Yant
- Future Food Beacon of Excellence and School of Life Sciences, University of Nottingham, Nottingham, United Kingdom
| | - Alexey P Seregin
- Herbarium (MW), Faculty of Biology, M. V. Lomonosov Moscow State University, Moscow, Russia
| | - Xavier Vekemans
- University Lille, CNRS, UMR 8198—Evo-Eco-Paleo, Lille, France
| | - Stefan Laurent
- Department of Comparative Development and Genetics, Max Planck Institute for Plant Breeding Research, Cologne, Germany
| | - Polina Yu Novikova
- Department of Chromosome Biology, Max Planck Institute for Plant Breeding Research, Cologne, Germany
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10
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Wang L, Filatov DA. Mechanisms of prezygotic post-pollination reproductive barriers in plants. FRONTIERS IN PLANT SCIENCE 2023; 14:1230278. [PMID: 37476168 PMCID: PMC10354421 DOI: 10.3389/fpls.2023.1230278] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/28/2023] [Accepted: 06/21/2023] [Indexed: 07/22/2023]
Abstract
Hybridisation between individuals of different species can lead to maladapted or inviable progeny due to genetic incompatibilities between diverging species. On the other hand, mating with close relatives, or self-fertilisation may lead to inbreeding depression. Thus, both too much or too little divergence may lead to problems and the organisms have to carefully choose mating partners to avoid both of these pitfalls. In plants this choice occurs at many stages during reproduction, but pollen-pistil interactions play a particularly important role in avoiding inbreeding and hybridisation with other species. Interestingly, the mechanisms involved in avoidance of selfing and interspecific hybridisation may work via shared molecular pathways, as self-incompatible species tend to be more 'choosy' with heterospecific pollen compared to self-compatible ones. This review discusses various prezygotic post-pollination barriers to interspecific hybridisation, with a focus on the mechanisms of pollen-pistil interactions and their role in the maintenance of species integrity.
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Affiliation(s)
- Ludi Wang
- Institute of Biological, Environmental and Rural Sciences (IBERS), Aberystwyth University, Gogerddan, Aberystwyth, United Kingdom
| | - Dmitry A. Filatov
- Department of Biology, University of Oxford, South Parks Road, Oxford, United Kingdom
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11
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Novikova PY, Kolesnikova UK, Scott AD. Ancestral self-compatibility facilitates the establishment of allopolyploids in Brassicaceae. PLANT REPRODUCTION 2023; 36:125-138. [PMID: 36282331 PMCID: PMC9957919 DOI: 10.1007/s00497-022-00451-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Accepted: 09/20/2022] [Indexed: 05/15/2023]
Abstract
Self-incompatibility systems based on self-recognition evolved in hermaphroditic plants to maintain genetic variation of offspring and mitigate inbreeding depression. Despite these benefits in diploid plants, for polyploids who often face a scarcity of mating partners, self-incompatibility can thwart reproduction. In contrast, self-compatibility provides an immediate advantage: a route to reproductive viability. Thus, diploid selfing lineages may facilitate the formation of new allopolyploid species. Here, we describe the mechanism of establishment of at least four allopolyploid species in Brassicaceae (Arabidopsis suecica, Arabidopsis kamchatica, Capsella bursa-pastoris, and Brassica napus), in a manner dependent on the prior loss of the self-incompatibility mechanism in one of the ancestors. In each case, the degraded S-locus from one parental lineage was dominant over the functional S-locus of the outcrossing parental lineage. Such dominant loss-of-function mutations promote an immediate transition to selfing in allopolyploids and may facilitate their establishment.
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Affiliation(s)
- Polina Yu Novikova
- Department of Chromosome Biology, Max Planck Institute for Plant Breeding Research, Carl-von-Linne-Weg 10, 50829, Cologne, Germany.
| | - Uliana K Kolesnikova
- Department of Chromosome Biology, Max Planck Institute for Plant Breeding Research, Carl-von-Linne-Weg 10, 50829, Cologne, Germany
| | - Alison Dawn Scott
- Department of Chromosome Biology, Max Planck Institute for Plant Breeding Research, Carl-von-Linne-Weg 10, 50829, Cologne, Germany
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12
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Ferriol M, Simó U, Mansanet CJ, Torres A, Picó B, Monforte AJ, Romero C. Pre- and Post-Zygotic Barriers Contribute to Reproductive Isolation and Correlate with Genetic Distance in Cucumis. PLANTS (BASEL, SWITZERLAND) 2023; 12:926. [PMID: 36840274 PMCID: PMC9963866 DOI: 10.3390/plants12040926] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Revised: 02/07/2023] [Accepted: 02/13/2023] [Indexed: 06/18/2023]
Abstract
Hybridization between Cucumis species, including cultivated melon (C. melo), is hampered by Interspecific Reproductive Barriers (IRBs). However, the nature of IRBs in Cucumis is largely unknown. This study explores locations, timing, and contribution to reproductive isolation (RI) of pre- and post-zygotic IRBs in Cucumis. To do this, we assessed crossability among Cucumis African wild species and C. melo at the pre-zygotic level by visualizing pollen tubes under fluorescence microscopy and, post-zygotically, by evaluating fruit/seed set and F1 hybrid fertility. Genetic distances among Cucumis species were inferred from Genotyping-by-Sequencing, and its correlation with RI stages was analyzed. Observed pre- and post-zygotic IRBs included pollen tube arrest, fruit set failure, and hybrid male sterility. Unilateral cross-incongruity/incompatibility (UCI) was detected in some hybridizations, and dominant gene action is suggested for pistil-side UCI in interspecific F1 hybrids. Notably, the allotetraploid C. ficifolius was very fertile as a seed parent but infertile in all reciprocal crosses. Contribution to RI was found significant for both pre- and post-zygotic IRBs. Additionally, a significant positive correlation was detected between genetic distance and pre- and post-zygotic RI stages. Interestingly, UCI offers an accessible system to dissect the genetics of IRBs in Cucumis, which may facilitate the use of wild relatives in breeding.
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Affiliation(s)
- María Ferriol
- Instituto Agroforestal Mediterráneo, Universitat Politècnica de València, Camino de Vera s/n, 46022 Valencia, Spain
| | - Unzué Simó
- Instituto Agroforestal Mediterráneo, Universitat Politècnica de València, Camino de Vera s/n, 46022 Valencia, Spain
- Instituto de Biología Molecular y Celular de Plantas, Consejo Superior de Investigaciones Científicas—Universitat Politècnica de València, c/Fausto Elio s/n, 46022 Valencia, Spain
| | - Carme J. Mansanet
- Instituto de Biología Molecular y Celular de Plantas, Consejo Superior de Investigaciones Científicas—Universitat Politècnica de València, c/Fausto Elio s/n, 46022 Valencia, Spain
| | - Alejandro Torres
- Instituto de Biología Molecular y Celular de Plantas, Consejo Superior de Investigaciones Científicas—Universitat Politècnica de València, c/Fausto Elio s/n, 46022 Valencia, Spain
| | - Belén Picó
- Instituto Universitario de Conservación y Mejora de la Agrodiversidad Valenciana, Universitat Politècnica de València, c/Fausto Elio s/n, 46022 Valencia, Spain
| | - Antonio J. Monforte
- Instituto de Biología Molecular y Celular de Plantas, Consejo Superior de Investigaciones Científicas—Universitat Politècnica de València, c/Fausto Elio s/n, 46022 Valencia, Spain
| | - Carlos Romero
- Instituto de Biología Molecular y Celular de Plantas, Consejo Superior de Investigaciones Científicas—Universitat Politècnica de València, c/Fausto Elio s/n, 46022 Valencia, Spain
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13
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Huang J, Yang L, Yang L, Wu X, Cui X, Zhang L, Hui J, Zhao Y, Yang H, Liu S, Xu Q, Pang M, Guo X, Cao Y, Chen Y, Ren X, Lv J, Yu J, Ding J, Xu G, Wang N, Wei X, Lin Q, Yuan Y, Zhang X, Ma C, Dai C, Wang P, Wang Y, Cheng F, Zeng W, Palanivelu R, Wu HM, Zhang X, Cheung AY, Duan Q. Stigma receptors control intraspecies and interspecies barriers in Brassicaceae. Nature 2023; 614:303-308. [PMID: 36697825 PMCID: PMC9908550 DOI: 10.1038/s41586-022-05640-x] [Citation(s) in RCA: 43] [Impact Index Per Article: 43.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2022] [Accepted: 12/09/2022] [Indexed: 01/26/2023]
Abstract
Flowering plants have evolved numerous intraspecific and interspecific prezygotic reproductive barriers to prevent production of unfavourable offspring1. Within a species, self-incompatibility (SI) is a widely utilized mechanism that rejects self-pollen2,3 to avoid inbreeding depression. Interspecific barriers restrain breeding between species and often follow the SI × self-compatible (SC) rule, that is, interspecific pollen is unilaterally incompatible (UI) on SI pistils but unilaterally compatible (UC) on SC pistils1,4-6. The molecular mechanisms underlying SI, UI, SC and UC and their interconnections in the Brassicaceae remain unclear. Here we demonstrate that the SI pollen determinant S-locus cysteine-rich protein/S-locus protein 11 (SCR/SP11)2,3 or a signal from UI pollen binds to the SI female determinant S-locus receptor kinase (SRK)2,3, recruits FERONIA (FER)7-9 and activates FER-mediated reactive oxygen species production in SI stigmas10,11 to reject incompatible pollen. For compatible responses, diverged pollen coat protein B-class12-14 from SC and UC pollen differentially trigger nitric oxide, nitrosate FER to suppress reactive oxygen species in SC stigmas to facilitate pollen growth in an intraspecies-preferential manner, maintaining species integrity. Our results show that SRK and FER integrate mechanisms underlying intraspecific and interspecific barriers and offer paths to achieve distant breeding in Brassicaceae crops.
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Affiliation(s)
- Jiabao Huang
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Tai'an, China
- College of Horticulture Science and Engineering, Shandong Agricultural University, Tai'an, China
| | - Lin Yang
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Tai'an, China
- College of Horticulture Science and Engineering, Shandong Agricultural University, Tai'an, China
| | - Liu Yang
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Tai'an, China
- College of Horticulture Science and Engineering, Shandong Agricultural University, Tai'an, China
| | - Xiaoyu Wu
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Tai'an, China
- College of Horticulture Science and Engineering, Shandong Agricultural University, Tai'an, China
| | - Xiaoshuang Cui
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Tai'an, China
- College of Horticulture Science and Engineering, Shandong Agricultural University, Tai'an, China
| | - Lili Zhang
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Tai'an, China
- College of Horticulture Science and Engineering, Shandong Agricultural University, Tai'an, China
| | - Jiyun Hui
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Tai'an, China
- College of Horticulture Science and Engineering, Shandong Agricultural University, Tai'an, China
| | - Yumei Zhao
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Tai'an, China
- College of Horticulture Science and Engineering, Shandong Agricultural University, Tai'an, China
| | - Hongmin Yang
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Tai'an, China
- College of Horticulture Science and Engineering, Shandong Agricultural University, Tai'an, China
| | - Shangjia Liu
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Tai'an, China
- College of Horticulture Science and Engineering, Shandong Agricultural University, Tai'an, China
| | - Quanling Xu
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Tai'an, China
- College of Horticulture Science and Engineering, Shandong Agricultural University, Tai'an, China
| | - Maoxuan Pang
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Tai'an, China
- College of Horticulture Science and Engineering, Shandong Agricultural University, Tai'an, China
| | - Xinping Guo
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Tai'an, China
- College of Horticulture Science and Engineering, Shandong Agricultural University, Tai'an, China
| | - Yunyun Cao
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Tai'an, China
- College of Horticulture Science and Engineering, Shandong Agricultural University, Tai'an, China
| | - Yu Chen
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Tai'an, China
- College of Horticulture Science and Engineering, Shandong Agricultural University, Tai'an, China
| | - Xinru Ren
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Tai'an, China
- College of Horticulture Science and Engineering, Shandong Agricultural University, Tai'an, China
| | - Jinzhi Lv
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Tai'an, China
- College of Horticulture Science and Engineering, Shandong Agricultural University, Tai'an, China
| | - Jianqiang Yu
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Tai'an, China
- College of Horticulture Science and Engineering, Shandong Agricultural University, Tai'an, China
| | - Junyi Ding
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Tai'an, China
| | - Gang Xu
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Tai'an, China
| | - Nian Wang
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Tai'an, China
| | - Xiaochun Wei
- Institute of Horticulture, Henan Academy of Agricultural Sciences, Zhengzhou, China
| | - Qinghui Lin
- Computer Network Information Centre, Chinese Academy of Sciences, Beijing, China
| | - Yuxiang Yuan
- Institute of Horticulture, Henan Academy of Agricultural Sciences, Zhengzhou, China
| | - Xiaowei Zhang
- Institute of Horticulture, Henan Academy of Agricultural Sciences, Zhengzhou, China
| | - Chaozhi Ma
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, China
| | - Cheng Dai
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, China
| | - Pengwei Wang
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, China
| | - Yongchao Wang
- Shandong Yiyi Agricultural Science and Technology Co., Ltd, Tai'an, China
| | - Fei Cheng
- College of Horticulture, Qingdao Agricultural University, Qingdao, China
| | - Weiqing Zeng
- International Flavors & Fragrances, Wilmington, DE, USA
| | | | - Hen-Ming Wu
- Department of Biochemistry and Molecular Biology, Molecular Cell Biology and Plant Biology Programs, University of Massachusetts, Amherst, MA, USA
| | - Xiansheng Zhang
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Tai'an, China
| | - Alice Y Cheung
- Department of Biochemistry and Molecular Biology, Molecular Cell Biology and Plant Biology Programs, University of Massachusetts, Amherst, MA, USA.
| | - Qiaohong Duan
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Tai'an, China.
- College of Horticulture Science and Engineering, Shandong Agricultural University, Tai'an, China.
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Hu H, Swift A, Mauro-Herrera M, Borrone J, Borja G, Doust AN. Transcriptomic analysis of seed development in Paysonia auriculata (Brassicaceae) identifies genes involved in hydroxy fatty acid biosynthesis. FRONTIERS IN PLANT SCIENCE 2023; 13:1079146. [PMID: 36714715 PMCID: PMC9880434 DOI: 10.3389/fpls.2022.1079146] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Accepted: 12/21/2022] [Indexed: 06/18/2023]
Abstract
Paysonia auriculata (Brassicaceae) produces multiple hydroxy fatty acids as major components of the seed oil. We tracked the changes in seed oil composition and gene expression during development, starting 14 days after flowers had been pollinated. Seed oil changes showed initially higher levels of saturated and unsaturated fatty acids (FAs) but little accumulation of hydroxy fatty acids (HFAs). Starting 21 days after pollination (DAP) HFA content sharply increased, and reached almost 30% at 28 DAP. Total seed oil also increased from a low of approximately 2% at 14 DAP to a high of approximately 20% by 42 DAP. We identified almost all of the fatty acid synthesis and modification genes that are known from Arabidopsis, and, in addition, a strong candidate for the hydroxylase gene that mediates the hydroxylation of fatty acids to produce valuable hydroxy fatty acids (HFAs) in this species. The gene expression network revealed is very similar to that of the emerging oil crop, Physaria fendleri, in the sister genus to Paysonia. Phylogenetic analyses indicate the hydroxylase enzyme, FAH12, evolved only once in Paysonia and Physaria, and that the enzyme is closely related to FAD2 enzymes. Phylogenetic analyses of FAD2 and FAH12 in the Brassicaceae and outgroup genera suggest that the branch leading to the hydroxylase clade of Paysonia and Physaria is under relaxed selection, compared with the strong purifying selection found across the FAD2 lineages.
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15
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The Core Jasmonic Acid-Signalling Module CoCOI1/CoJAZ1/CoMYC2 Are Involved in Jas Mediated Growth of the Pollen Tube in Camellia oleifera. Curr Issues Mol Biol 2022; 44:5405-5415. [PMID: 36354678 PMCID: PMC9689390 DOI: 10.3390/cimb44110366] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2022] [Revised: 10/27/2022] [Accepted: 10/28/2022] [Indexed: 11/06/2022] Open
Abstract
Camellia oleifera is a woody edible oil species with late self-incompatibility characteristics. Previous transcriptome analysis showed that genes involved in jasmonic acid signal transduction were significantly different in self-and cross-pollinated pistils of Camellia oleifera. To investigate the relationship between jasmonate signal and self-incompatibility by studying the core genes of jasmonate signal transduction. The results showed that exogenous JA and MeJA at 1.0 mM significantly inhibited pollen tube germination and pollen tube elongation. and JA up-regulated CoCOI1, CoJAZ1, and CoMYC, the core genes of jasmonate signal transduction. Subcellular localization indicated that CoCOI1 and CoJAZ1 were located in the nucleus and CoMYC2 in the endoplasmic reticulum. The three genes exhibited tissue-specific expression pattern. CoCOI1 was significantly expressed in pollen, CoJAZ1 was significantly expressed in ovary, CoMYC2 was significantly expressed in filaments, but not in pollen. Furthermore, CoJAZ1 and CoMYC2 were highly expressing at 24 h in self-pollinated styles. These results suggested that JA signal transduction of C. oleifera was involved in the process of self-pollination, and thus in the process of plant defense. When pollen tubes grew slowly in the style, ovary may receive JA signal, which initiates the molecular mechanism of inhibiting the growth of self-pollinating pollen tubes.
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16
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Rushworth CA, Wagner MR, Mitchell-Olds T, Anderson JT. The Boechera model system for evolutionary ecology. AMERICAN JOURNAL OF BOTANY 2022; 109:1939-1961. [PMID: 36371714 DOI: 10.1002/ajb2.16090] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/17/2022] [Revised: 08/27/2022] [Accepted: 08/30/2022] [Indexed: 06/16/2023]
Abstract
Model systems in biology expand the research capacity of individuals and the community. Closely related to Arabidopsis, the genus Boechera has emerged as an important ecological model owing to the ability to integrate across molecular, functional, and eco-evolutionary approaches. Boechera species are broadly distributed in relatively undisturbed habitats predominantly in western North America and provide one of the few experimental systems for identification of ecologically important genes through genome-wide association studies and investigations of selection with plants in their native habitats. The ecologically, evolutionarily, and agriculturally important trait of apomixis (asexual reproduction via seeds) is common in the genus, and field experiments suggest that abiotic and biotic environments shape the evolution of sex. To date, population genetic studies have focused on the widespread species B. stricta, detailing population divergence and demographic history. Molecular and ecological studies show that balancing selection maintains genetic variation in ~10% of the genome, and ecological trade-offs contribute to complex trait variation for herbivore resistance, flowering phenology, and drought tolerance. Microbiome analyses have shown that host genotypes influence leaf and root microbiome composition, and the soil microbiome influences flowering phenology and natural selection. Furthermore, Boechera offers numerous opportunities for investigating biological responses to global change. In B. stricta, climate change has induced a shift of >2 weeks in the timing of first flowering since the 1970s, altered patterns of natural selection, generated maladaptation in previously locally-adapted populations, and disrupted life history trade-offs. Here we review resources and results for this eco-evolutionary model system and discuss future research directions.
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Affiliation(s)
| | - Maggie R Wagner
- Department of Ecology and Evolutionary Biology, Kansas Biological Survey and Center for Ecological Research, University of Kansas, Lawrence, KS, 66045, USA
| | | | - Jill T Anderson
- Department of Genetics and Odum School of Ecology, University of Georgia, Athens, GA, 30602, USA
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17
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Ni M, Yi X, Wang Q, Wang J, Wang S, Liu L, Xu L, Wang Y. Classification and Identification of S Haplotypes in Radish Based on SRK Kinase Domain Sequence Analysis. PLANTS 2022; 11:plants11172304. [PMID: 36079686 PMCID: PMC9459979 DOI: 10.3390/plants11172304] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/18/2022] [Revised: 08/25/2022] [Accepted: 08/26/2022] [Indexed: 11/25/2022]
Abstract
Radish is a typical self-incompatible crop. The rapid and accurate identification of S haplotypes can circumvent the blindness of the hybrid combination process, which is critical in radish heterosis utilization and the breeding of new varieties. In this study, based on the gene sequence which encodes the S-locus receptor kinase (SRK) of radish, and the polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) analysis, the S haplotypes were identified among 79 cultivated radish genotypes. The PCR results indicated that 79 radish genotypes could be divided into 48 Class I, 13 Class II, and 17 Class I/II S haplotypes. Sequence alignment confirmed that the Class I materials contained 19 S haplotypes, of which three haplotypes (‘NAU-S53’, ‘NAU-S54’ and ‘NAU-S55’) were identified for the first time in radish. After digestion using the Hinf I restriction endonuclease, the SRK domain of DNA fragments of different genotypes showed high polymorphism. Homozygous materials S haplotypes could be quickly distinguished by the differences in the digested bands. Molecular identification of the S haplotype was highly consistent with the field pollination and pollen tube germination results. These results would provide an important approach for the rapid identification of radish S haplotypes and the efficient utilization of self-incompatibility in heterosis breeding.
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18
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Feng L, Lin H, Kang M, Ren Y, Yu X, Xu Z, Wang S, Li T, Yang W, Hu Q. A chromosome-level genome assembly of an alpine plant Crucihimalaya lasiocarpa provides insights into high-altitude adaptation. DNA Res 2022; 29:dsac004. [PMID: 35094078 PMCID: PMC8801980 DOI: 10.1093/dnares/dsac004] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Indexed: 11/23/2022] Open
Abstract
It remains largely unknown how plants adapt to high-altitude habitats. Crucihimalaya (Brassicaceae) is an alpine genus occurring in the Qinghai-Tibet Plateau characterized by cold temperatures and strong ultraviolet radiation. Here, we generated a chromosome-level genome for C. lasiocarpa with a total size of 255.8 Mb and a scaffold N50 size of 31.9 Mb. We first examined the karyotype origin of this species and found that the karyotype of five chromosomes resembled the ancestral karyotype of the Brassicaceae family, while the other three showed strong chromosomal structural variations. In combination with the rough genome sequence of another congener (C. himalaica), we found that the significantly expanded gene families and positively selected genes involved in alpine adaptation have occurred since the origin of this genus. Our new findings provide valuable information for the chromosomal karyotype evolution of Brassicaceae and investigations of high-altitude environment adaptation of the genus.
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Affiliation(s)
- Landi Feng
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu 610065, China
| | - Hao Lin
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu 610065, China
| | - Minghui Kang
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu 610065, China
| | - Yumeng Ren
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu 610065, China
| | - Xi Yu
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu 610065, China
| | - Zhanpeng Xu
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu 610065, China
| | - Shuo Wang
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu 610065, China
| | - Ting Li
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu 610065, China
| | - Wenjie Yang
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu 610065, China
| | - Quanjun Hu
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu 610065, China
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19
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Bayer PE, Scheben A, Golicz AA, Yuan Y, Faure S, Lee H, Chawla HS, Anderson R, Bancroft I, Raman H, Lim YP, Robbens S, Jiang L, Liu S, Barker MS, Schranz ME, Wang X, King GJ, Pires JC, Chalhoub B, Snowdon RJ, Batley J, Edwards D. Modelling of gene loss propensity in the pangenomes of three Brassica species suggests different mechanisms between polyploids and diploids. PLANT BIOTECHNOLOGY JOURNAL 2021; 19:2488-2500. [PMID: 34310022 PMCID: PMC8633514 DOI: 10.1111/pbi.13674] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/28/2021] [Revised: 07/11/2021] [Accepted: 07/20/2021] [Indexed: 05/26/2023]
Abstract
Plant genomes demonstrate significant presence/absence variation (PAV) within a species; however, the factors that lead to this variation have not been studied systematically in Brassica across diploids and polyploids. Here, we developed pangenomes of polyploid Brassica napus and its two diploid progenitor genomes B. rapa and B. oleracea to infer how PAV may differ between diploids and polyploids. Modelling of gene loss suggests that loss propensity is primarily associated with transposable elements in the diploids while in B. napus, gene loss propensity is associated with homoeologous recombination. We use these results to gain insights into the different causes of gene loss, both in diploids and following polyploidization, and pave the way for the application of machine learning methods to understanding the underlying biological and physical causes of gene presence/absence.
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Affiliation(s)
- Philipp E. Bayer
- School of Biological Sciences and the Institute of AgricultureFaculty of ScienceThe University of Western AustraliaCrawleyWAAustralia
| | - Armin Scheben
- School of Biological Sciences and the Institute of AgricultureFaculty of ScienceThe University of Western AustraliaCrawleyWAAustralia
| | - Agnieszka A. Golicz
- Plant Molecular Biology and Biotechnology LaboratoryFaculty of Veterinary and Agricultural SciencesUniversity of MelbourneParkvilleVICAustralia
| | - Yuxuan Yuan
- School of Biological Sciences and the Institute of AgricultureFaculty of ScienceThe University of Western AustraliaCrawleyWAAustralia
| | | | - HueyTyng Lee
- Department of Plant BreedingIFZ Research Centre for BiosystemsLand Use and NutritionJustus Liebig University GiessenGiessenGermany
| | - Harmeet Singh Chawla
- Department of Plant BreedingIFZ Research Centre for BiosystemsLand Use and NutritionJustus Liebig University GiessenGiessenGermany
| | - Robyn Anderson
- School of Biological Sciences and the Institute of AgricultureFaculty of ScienceThe University of Western AustraliaCrawleyWAAustralia
| | | | - Harsh Raman
- NSW Department of Primary IndustriesWagga Wagga Agricultural Institute, PMBWagga WaggaNSWAustralia
| | - Yong Pyo Lim
- Department of HorticultureChungnam National UniversityDaejeonSouth Korea
| | | | - Lixi Jiang
- Institute of crop scienceDepartment of Agronomy and Plant BreedingZhejiang UniversityHangzhouChina
| | - Shengyi Liu
- Chinese Academy of Agricultural SciencesOil Crops Research InstituteWuhanChina
| | - Michael S. Barker
- Department of Ecology & Evolutionary BiologyUniversity of ArizonaTucsonAZUSA
| | - M. Eric Schranz
- Biosystematics GroupWageningen University and Research CenterWageningenThe Netherlands
| | - Xiaowu Wang
- Institute of Vegetables and FlowersChinese Academy of Agricultural Sciences (IVF, CAAS)BeijingChina
| | - Graham J. King
- Southern Cross Plant ScienceSouthern Cross UniversityLismoreNSWAustralia
| | - J. Chris Pires
- Division of Biological SciencesBond Life Sciences CenterUniversity of MissouriColumbiaMissouriUSA
| | - Boulos Chalhoub
- Institute of crop scienceDepartment of Agronomy and Plant BreedingZhejiang UniversityHangzhouChina
| | - Rod J. Snowdon
- Department of Plant BreedingIFZ Research Centre for BiosystemsLand Use and NutritionJustus Liebig University GiessenGiessenGermany
| | - Jacqueline Batley
- School of Biological Sciences and the Institute of AgricultureFaculty of ScienceThe University of Western AustraliaCrawleyWAAustralia
| | - David Edwards
- School of Biological Sciences and the Institute of AgricultureFaculty of ScienceThe University of Western AustraliaCrawleyWAAustralia
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20
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Robinson R, Sollapura V, Couroux P, Sprott D, Ravensdale M, Routly E, Xing T, Robert LS. The Brassica mature pollen and stigma proteomes: preparing to meet. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2021; 107:1546-1568. [PMID: 33650121 DOI: 10.1111/tpj.15219] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/01/2021] [Revised: 02/16/2021] [Accepted: 02/18/2021] [Indexed: 06/12/2023]
Abstract
Successful pollination in Brassica brings together the mature pollen grain and stigma papilla, initiating an intricate series of molecular processes meant to eventually enable sperm cell delivery for fertilization and reproduction. At maturity, the pollen and stigma cells have acquired proteomes, comprising the primary molecular effectors required upon their meeting. Knowledge of the roles and global composition of these proteomes in Brassica species is largely lacking. To address this gap, gel-free shotgun proteomics was performed on the mature pollen and stigma of Brassica carinata, a representative of the Brassica family and its many crop species (e.g. Brassica napus, Brassica oleracea and Brassica rapa) that holds considerable potential as a bio-industrial crop. A total of 5608 and 7703 B. carinata mature pollen and stigma proteins were identified, respectively. The pollen and stigma proteomes were found to reflect not only their many common functional and developmental objectives, but also the important differences underlying their cellular specialization. Isobaric tag for relative and absolute quantification (iTRAQ) was exploited in the first analysis of a developing Brassicaceae stigma, and revealed 251 B. carinata proteins that were differentially abundant during stigma maturation, providing insight into proteins involved in the initial phases of pollination. Corresponding pollen and stigma transcriptomes were also generated, highlighting functional divergences between the proteome and transcriptome during different stages of pollen-stigma interaction. This study illustrates the investigative potential of combining the most comprehensive Brassicaceae pollen and stigma proteomes to date with iTRAQ and transcriptome data to provide a unique global perspective of pollen and stigma development and interaction.
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Affiliation(s)
- Reneé Robinson
- Ottawa Research and Development Centre, 960 Carling Ave., Ottawa, Ontario, K1A 0C6, Canada
- Department of Biology, Carleton University, 1125 Colonel By Drive, Ottawa, Ontario, K1S 5B6, Canada
| | - Vishwanath Sollapura
- Ottawa Research and Development Centre, 960 Carling Ave., Ottawa, Ontario, K1A 0C6, Canada
| | - Philippe Couroux
- Ottawa Research and Development Centre, 960 Carling Ave., Ottawa, Ontario, K1A 0C6, Canada
| | - Dave Sprott
- Ottawa Research and Development Centre, 960 Carling Ave., Ottawa, Ontario, K1A 0C6, Canada
| | - Michael Ravensdale
- Ottawa Research and Development Centre, 960 Carling Ave., Ottawa, Ontario, K1A 0C6, Canada
| | - Elizabeth Routly
- Ottawa Research and Development Centre, 960 Carling Ave., Ottawa, Ontario, K1A 0C6, Canada
| | - Tim Xing
- Department of Biology, Carleton University, 1125 Colonel By Drive, Ottawa, Ontario, K1S 5B6, Canada
| | - Laurian S Robert
- Ottawa Research and Development Centre, 960 Carling Ave., Ottawa, Ontario, K1A 0C6, Canada
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21
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Stotz HU, Brotherton D, Inal J. Communication is key: Extracellular vesicles as mediators of infection and defence during host-microbe interactions in animals and plants. FEMS Microbiol Rev 2021; 46:6358524. [PMID: 34448857 PMCID: PMC8767456 DOI: 10.1093/femsre/fuab044] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2021] [Accepted: 08/23/2021] [Indexed: 12/12/2022] Open
Abstract
Extracellular vesicles (EVs) are now understood to be ubiquitous mediators of cellular communication. In this review, we suggest that EVs have evolved into a highly regulated system of communication with complex functions including export of wastes, toxins and nutrients, targeted delivery of immune effectors and vectors of RNA silencing. Eukaryotic EVs come in different shapes and sizes and have been classified according to their biogenesis and size distributions. Small EVs (or exosomes) are released through fusion of endosome-derived multivesicular bodies with the plasma membrane. Medium EVs (or microvesicles) bud off the plasma membrane as a form of exocytosis. Finally, large EVs (or apoptotic bodies) are produced as a result of the apoptotic process. This review considers EV secretion and uptake in four eukaryotic kingdoms, three of which produce cell walls. The impacts cell walls have on EVs in plants and fungi are discussed, as are roles of fungal EVs in virulence. Contributions of plant EVs to development and innate immunity are presented. Compelling cases are sporophytic self-incompatibility and cellular invasion by haustorium-forming filamentous pathogens. The involvement of EVs in all of these eukaryotic processes is reconciled considering their evolutionary history.
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Affiliation(s)
- Henrik U Stotz
- School of Life and Medical Sciences, University of Hertfordshire, Hatfield AL10 9AB, UK
| | - Dominik Brotherton
- School of Life and Medical Sciences, University of Hertfordshire, Hatfield AL10 9AB, UK
| | - Jameel Inal
- School of Life and Medical Sciences, University of Hertfordshire, Hatfield AL10 9AB, UK.,School of Human Sciences, London Metropolitan University, London, N7 8DB, UK
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22
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Kim MJ, Jeon BW, Oh E, Seo PJ, Kim J. Peptide Signaling during Plant Reproduction. TRENDS IN PLANT SCIENCE 2021; 26:822-835. [PMID: 33715959 DOI: 10.1016/j.tplants.2021.02.008] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/04/2020] [Revised: 02/02/2021] [Accepted: 02/17/2021] [Indexed: 05/08/2023]
Abstract
Plant signaling peptides are involved in cell-cell communication networks and coordinate a wide range of plant growth and developmental processes. Signaling peptides generally bind to receptor-like kinases, inducing their dimerization with co-receptors for signaling activation to trigger cellular signaling and biological responses. Fertilization is an important life event in flowering plants, involving precise control of cell-cell communications between male and female tissues. Peptide-receptor-like kinase-mediated signaling plays an important role in male-female interactions for successful fertilization in flowering plants. Here, we describe the recent findings on the functions and signaling pathways of peptides and receptors involved in plant reproduction processes including pollen germination, pollen tube growth, pollen tube guidance to the embryo sac, and sperm cell reception in female tissues.
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Affiliation(s)
- Min-Jung Kim
- Department of Bioenergy Science and Technology, Chonnam National University, Gwangju 61186, Korea; Department of Integrative Food, Bioscience, and Technology, Chonnam National University, Gwangju 61186, Korea
| | - Byeong Wook Jeon
- Department of Bioenergy Science and Technology, Chonnam National University, Gwangju 61186, Korea; Department of Integrative Food, Bioscience, and Technology, Chonnam National University, Gwangju 61186, Korea
| | - Eunkyoo Oh
- Department of Life Sciences, Korea University, Seoul 02841, Korea
| | - Pil Joon Seo
- Department of Chemistry, Seoul National University, Seoul 08826, Korea
| | - Jungmook Kim
- Department of Bioenergy Science and Technology, Chonnam National University, Gwangju 61186, Korea; Department of Integrative Food, Bioscience, and Technology, Chonnam National University, Gwangju 61186, Korea; Kumho Life Science Laboratory, Chonnam National University, Buk-Gu, Gwangju 61186, Korea.
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23
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Abstract
Pollen-pistil interactions serve as important prezygotic reproductive barriers that play a critical role in mate selection in plants. Here, we highlight recent progress toward understanding the molecular basis of pollen-pistil interactions as reproductive isolating barriers. These barriers can be active systems of pollen rejection, or they can result from a mismatch of required male and female factors. In some cases, the barriers are mechanistically linked to self-incompatibility systems, while others represent completely independent processes. Pollen-pistil reproductive barriers can act as soon as pollen is deposited on a stigma, where penetration of heterospecific pollen tubes is blocked by the stigma papillae. As pollen tubes extend, the female transmitting tissue can selectively limit growth by producing cell wall-modifying enzymes and cytotoxins that interact with the growing pollen tube. At ovules, differential pollen tube attraction and inhibition of sperm cell release can act as barriers to heterospecific pollen tubes.
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Affiliation(s)
- Amanda K Broz
- Department of Biology, Colorado State University, Fort Collins, Colorado 80523-1878, USA; ,
| | - Patricia A Bedinger
- Department of Biology, Colorado State University, Fort Collins, Colorado 80523-1878, USA; ,
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24
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Liu Y, Watanabe M, Yasukawa S, Kawamura Y, Aneklaphakij C, Fernie AR, Tohge T. Cross-Species Metabolic Profiling of Floral Specialized Metabolism Facilitates Understanding of Evolutional Aspects of Metabolism Among Brassicaceae Species. FRONTIERS IN PLANT SCIENCE 2021; 12:640141. [PMID: 33868339 PMCID: PMC8045754 DOI: 10.3389/fpls.2021.640141] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/10/2020] [Accepted: 03/01/2021] [Indexed: 05/24/2023]
Abstract
Plants produce a variety of floral specialized (secondary) metabolites with roles in several physiological functions, including light-protection, attraction of pollinators, and protection against herbivores. Pigments and volatiles synthesized in the petal have been focused on and characterized as major chemical factors influencing pollination. Recent advances in plant metabolomics have revealed that the major floral specialized metabolites found in land plant species are hydroxycinnamates, phenolamides, and flavonoids albeit these are present in various quantities and encompass diverse chemical structures in different species. Here, we analyzed numerous floral specialized metabolites in 20 different Brassicaceae genotypes encompassing both different species and in the case of crop species different cultivars including self-compatible (SC) and self-incompatible (SI) species by liquid chromatography-mass spectrometry (LC-MS). Of the 228 metabolites detected in flowers among 20 Brassicaceae species, 15 metabolite peaks including one phenylacyl-flavonoids and five phenolamides were detected and annotated as key metabolites to distinguish SC and SI plant species, respectively. Our results provide a family-wide metabolic framework and delineate signatures for compatible and incompatible genotypes thereby providing insight into evolutionary aspects of floral metabolism in Brassicaceae species.
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Affiliation(s)
- Yuting Liu
- Graduate School of Biological Science, Nara Institute of Science and Technology (NAIST), Ikoma, Japan
| | - Mutsumi Watanabe
- Graduate School of Biological Science, Nara Institute of Science and Technology (NAIST), Ikoma, Japan
| | - Sayuri Yasukawa
- Graduate School of Biological Science, Nara Institute of Science and Technology (NAIST), Ikoma, Japan
| | - Yuriko Kawamura
- Graduate School of Biological Science, Nara Institute of Science and Technology (NAIST), Ikoma, Japan
| | - Chaiwat Aneklaphakij
- Graduate School of Biological Science, Nara Institute of Science and Technology (NAIST), Ikoma, Japan
- Department of Pharmacognosy, Faculty of Pharmacy, Mahidol University, Bangkok, Thailand
| | - Alisdair R. Fernie
- Max-Planck-Institute of Molecular Plant Physiology, Potsdam-Golm, Germany
| | - Takayuki Tohge
- Graduate School of Biological Science, Nara Institute of Science and Technology (NAIST), Ikoma, Japan
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25
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Lu Y, Moran Lauter AN, Makkena S, Scott MP, Evans MMS. Insights into the molecular control of cross-incompatibility in Zea mays. PLANT REPRODUCTION 2020; 33:117-128. [PMID: 32865620 DOI: 10.1007/s00497-020-00394-w] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/25/2020] [Accepted: 08/18/2020] [Indexed: 06/11/2023]
Abstract
Gametophytic cross-incompatibility systems in corn have been the subject of genetic studies for more than a century. They have tremendous economic potential as a genetic mechanism for controlling fertilization without controlling pollination. Three major genetically distinct and functionally equivalent cross-incompatibility systems exist in Zea mays: Ga1, Tcb1, and Ga2. All three confer reproductive isolation between maize or teosinte varieties with different haplotypes at any one locus. These loci confer genetically separable functions to the silk and pollen: a female function that allows the silk to block fertilization by non-self-type pollen and a male function that overcomes the block of the female function from the same locus. Identification of some of these genes has shed light on the reproductive isolation they confer. The identification of both male and female factors as pectin methylesterases reveals the importance of pectin methylesterase activity in controlling the decision between pollen acceptance versus rejection, possibly by regulating the degree of methylesterification of the pollen tube cell wall. The appropriate level and spatial distribution of pectin methylesterification is critical for pollen tube growth and is affected by both pectin methylesterases and pectin methylesterase inhibitors. We present a molecular model that explains how cross-incompatibility systems may function that can be tested in Zea and uncharacterized cross-incompatibility systems. Molecular characterization of these loci in conjunction with further refinement of the underlying molecular and cellular mechanisms will allow researchers to bring new and powerful tools to bear on understanding reproductive isolation in Zea mays and related species.
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Affiliation(s)
- Yongxian Lu
- Department of Plant Biology, Carnegie Institute for Science, Stanford, CA, 94305, USA
| | | | | | - M Paul Scott
- Corn Insects and Crop Genetics Research Unit, USDA ARS, Ames, IA, 50011, USA
| | - Matthew M S Evans
- Department of Plant Biology, Carnegie Institute for Science, Stanford, CA, 94305, USA.
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26
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Mittell EA, Cobbold CA, Ijaz UZ, Kilbride EA, Moore KA, Mable BK. Feral populations of Brassica oleracea along Atlantic coasts in western Europe. Ecol Evol 2020; 10:11810-11825. [PMID: 33145003 PMCID: PMC7593181 DOI: 10.1002/ece3.6821] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2020] [Revised: 07/23/2020] [Accepted: 07/24/2020] [Indexed: 01/16/2023] Open
Abstract
There has been growing emphasis on the role that crop wild relatives might play in supporting highly selected agriculturally valuable species in the face of climate change. In species that were domesticated many thousands of years ago, distinguishing wild populations from escaped feral forms can be challenging, but reintroducing variation from either source could supplement current cultivated forms. For economically important cabbages (Brassicaceae: Brassica oleracea), "wild" populations occur throughout Europe but little is known about their genetic variation or potential as resources for breeding more resilient crop varieties. The main aim of this study was to characterize the population structure of geographically isolated wild cabbage populations along the coasts of the UK and Spain, including the Atlantic range edges. Double-digest restriction-site-associated DNA sequencing was used to sample individual cabbage genomes, assess the similarity of plants from 20 populations, and explore environment-genotype associations across varying climatic conditions. Interestingly, there were no indications of isolation by distance; several geographically close populations were genetically more distinct from each other than to distant populations. Furthermore, several distant populations shared genetic ancestry, which could indicate that they were established by escapees of similar source cultivars. However, there were signals of local adaptation to different environments, including a possible relationship between genetic diversity and soil pH. Overall, these results highlight wild cabbages in the Atlantic region as an important genetic resource worthy of further research into their relationship with existing crop varieties.
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Affiliation(s)
- Elizabeth A. Mittell
- Institute of Biodiversity, Animal Health and Comparative MedicineUniversity of GlasgowGlasgowUK
- School of BiologyUniversity of St AndrewsSt AndrewsUK
| | - Christina A. Cobbold
- School of Mathematics and StatisticsUniversity of GlasgowGlasgowUK
- The Boyd Orr Centre for Population and Ecosystem HealthUniversity of GlasgowGlasgowUK
| | | | - Elizabeth A. Kilbride
- Institute of Biodiversity, Animal Health and Comparative MedicineUniversity of GlasgowGlasgowUK
| | | | - Barbara K. Mable
- Institute of Biodiversity, Animal Health and Comparative MedicineUniversity of GlasgowGlasgowUK
- The Boyd Orr Centre for Population and Ecosystem HealthUniversity of GlasgowGlasgowUK
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27
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Duan Z, Zhang Y, Tu J, Shen J, Yi B, Fu T, Dai C, Ma C. The Brassica napus GATA transcription factor BnA5.ZML1 is a stigma compatibility factor. JOURNAL OF INTEGRATIVE PLANT BIOLOGY 2020; 62:1112-1131. [PMID: 32022417 DOI: 10.1111/jipb.12916] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/09/2019] [Accepted: 02/02/2020] [Indexed: 05/16/2023]
Abstract
Self-incompatibility (SI) is a genetic mechanism that rejects self-pollen and thus prevents inbreeding in some hermaphroditic angiosperms. In the Brassicaceae, SI involves a pollen-stigma recognition system controlled by a single locus known as the S locus, which consists of two highly polymorphic genes that encode S-locus cysteine-rich protein (SCR) and S-receptor kinase (SRK). When self-pollen lands on the stigma, the S-haplotype-specific interaction between SCR and SRK triggers SI. Here, we show that the GATA transcription factor BnA5.ZML1 suppresses SI responses in Brassica napus and is induced after compatible pollination. The loss-of-function mutant bna5.zml1 displays reduced self-compatibility. In contrast, overexpression of BnA5.ZML1 in self-incompatible stigmas leads to a partial breakdown of SI responses, suggesting that BnA5.ZML1 is a stigmatic compatibility factor. Furthermore, the expression levels of SRK and ARC1 are up-regulated in bna5.zml1 mutants, and they are down-regulated in BnA5.ZML1 overexpressing lines. SRK affects the cellular localization of BnA5.ZML1 through direct protein-protein interaction. Overall, our findings highlight the fundamental role of BnA5.ZML1 in SI responses in B. napus, establishing a direct interaction between BnA5.ZML1 and SRK in this process.
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Affiliation(s)
- Zhiqiang Duan
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, 430070, China
| | - Yatao Zhang
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, 430070, China
| | - Jinxing Tu
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, 430070, China
| | - Jinxiong Shen
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, 430070, China
| | - Bin Yi
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, 430070, China
| | - Tingdong Fu
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, 430070, China
| | - Cheng Dai
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, 430070, China
| | - Chaozhi Ma
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, 430070, China
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28
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Li C, Mesgaran MB, Ades PK, Cousens RD. Inheritance of breeding system in Cakile (Brassicaceae) following hybridization: implications for plant invasions. ANNALS OF BOTANY 2020; 125:639-650. [PMID: 31802117 PMCID: PMC7102952 DOI: 10.1093/aob/mcz198] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2019] [Accepted: 12/04/2019] [Indexed: 06/10/2023]
Abstract
BACKGROUND AND AIMS Hybridization is commonly assumed to aid invasions through adaptive introgression. In contrast, a recent theoretical model predicted that there can be non-adaptive demographic advantages from hybridization and that the population consequences will depend on the breeding systems of the species and the extent to which subsequent generations are able to interbreed and reproduce. We examined cross-fertilization success and inheritance of breeding systems of two species in order to better assess the plausibility of the theoretical predictions. METHODS Reciprocal artificial crosses were made to produce F1, F2 and backcrosses between Cakile maritima (self-incompatible, SI) and Cakile edentula (self-compatible, SC) (Brassicaceae). Flowers were emasculated prior to anther dehiscence and pollen was introduced from donor plants to the recipient's stigma. Breeding system, pollen viability, pollen germination, pollen tube growth and reproductive output were then determined. The results were used to replace the assumptions made in the original population model and new simulations were made. KEY RESULTS The success rate with the SI species as the pollen recipient was lower than when it was the pollen donor, in quantitative agreement with the 'SI × SC rule' of unilateral incompatibility. Similar outcomes were found in subsequent generations where fertile hybrids were produced but lower success rates were observed in crosses of SI pollen donors with SC pollen recipients. Much lower proportions of SC hybrids were produced than expected from a single Mendelian allele. When incorporated into a population model, these results predicted an even faster rate of replacement of the SC species by the SI species than previously reported. CONCLUSIONS Our study of these two species provides even clearer support for the feasibility of the non-adaptive hybridization hypothesis, whereby the colonization of an SI species can be assisted by transient hybridization with a congener. It also provides novel insight into reproductive biology beyond the F1 generation.
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Affiliation(s)
- Chengjun Li
- School of BioSciences, The University of Melbourne, Melbourne, Victoria, Australia
| | - Mohsen B Mesgaran
- School of BioSciences, The University of Melbourne, Melbourne, Victoria, Australia
| | - Peter K Ades
- School of Ecosystem and Forest Sciences, The University of Melbourne, Melbourne, Victoria, Australia
| | - Roger D Cousens
- School of BioSciences, The University of Melbourne, Melbourne, Victoria, Australia
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29
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Chantreau M, Poux C, Lensink MF, Brysbaert G, Vekemans X, Castric V. Asymmetrical diversification of the receptor-ligand interaction controlling self-incompatibility in Arabidopsis. eLife 2019; 8:e50253. [PMID: 31763979 PMCID: PMC6908432 DOI: 10.7554/elife.50253] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2019] [Accepted: 11/22/2019] [Indexed: 11/13/2022] Open
Abstract
How two-component genetic systems accumulate evolutionary novelty and diversify in the course of evolution is a fundamental problem in evolutionary systems biology. In the Brassicaceae, self-incompatibility (SI) is a spectacular example of a diversified allelic series in which numerous highly diverged receptor-ligand combinations are segregating in natural populations. However, the evolutionary mechanisms by which new SI specificities arise have remained elusive. Using in planta ancestral protein reconstruction, we demonstrate that two allelic variants segregating as distinct receptor-ligand combinations diverged through an asymmetrical process whereby one variant has retained the same recognition specificity as their (now extinct) putative ancestor, while the other has functionally diverged and now represents a novel specificity no longer recognized by the ancestor. Examination of the structural determinants of the shift in binding specificity suggests that qualitative rather than quantitative changes of the interaction are an important source of evolutionary novelty in this highly diversified receptor-ligand system.
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Affiliation(s)
| | - Céline Poux
- CNRS, Univ. Lille, UMR 8198—Evo-Eco-Paléo, F-59000LilleFrance
| | - Marc F Lensink
- Univ. Lille, CNRS, UMR 8576 - UGSF - Unité de Glycobiologie Structurale et Fonctionnelle, F-59000LilleFrance
| | - Guillaume Brysbaert
- Univ. Lille, CNRS, UMR 8576 - UGSF - Unité de Glycobiologie Structurale et Fonctionnelle, F-59000LilleFrance
| | - Xavier Vekemans
- CNRS, Univ. Lille, UMR 8198—Evo-Eco-Paléo, F-59000LilleFrance
| | - Vincent Castric
- CNRS, Univ. Lille, UMR 8198—Evo-Eco-Paléo, F-59000LilleFrance
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30
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Franks SJ, Sekor MR, Davey S, Weis AE. Artificial seed aging reveals the invisible fraction: Implications for evolution experiments using the resurrection approach. Evol Ecol 2019. [DOI: 10.1007/s10682-019-10007-2] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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31
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Shi S, Gao Q, Zuo T, Lei Z, Pu Q, Wang Y, Liu G, He X, Ren X, Zhu L. Identification and characterization of BoPUB3: a novel interaction protein with S-locus receptor kinase in Brassica oleracea L. Acta Biochim Biophys Sin (Shanghai) 2019; 51:723-733. [PMID: 31168565 DOI: 10.1093/abbs/gmz057] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2018] [Revised: 04/03/2019] [Indexed: 12/27/2022] Open
Abstract
Armadillo repeat containing 1 (ARC1) is phosphorylated by S-locus receptor kinase (SRK) and functions as a positive regulator in self-incompatibility response of Brassica. However, ARC1 only causes partial breakdown of the self-incompatibility response, and other SRK downstream factors may also participate in the self-incompatibility signaling pathway. In the present study, to search for SRK downstream targets, a plant U-box protein 3 (BoPUB3) was identified from the stigma of Brassica oleracea L. BoPUB3 was highly expressed in the stigma, and its expression was increased with the stigma development and reached to the highest level in the mature-stage stigma. BoPUB3, a 76.8-kDa protein with 697 amino acids, is a member of the PUB-ARM family and contains three domain characteristics of BoARC1, including a U-box N-terminal domain, a U-box motif, and a C-terminal arm repeat domain. The phylogenic tree showed that BoPUB3 was close to BoARC1. The synteny analysis revealed that B. oleracea chromosomal region containing BoPUB3 had high synteny with the Arabidopsis thaliana chromosomal region containing AtPUB3 (At3G54790). In addition, the subcellular localization analysis showed that BoPUB3 primarily localized in the plasma membrane and also in the cytoplasm. The combination of the yeast two-hybrid and in vitro binding assay showed that both BoPUB3 and BoARC1 could interact with SRK kinase domain, and SRK showed much higher level of β-galactosidase activity in its interaction with BoPUB3 than with BoARC1. These results implied that BoPUB3 is a novel interactor with SRK, which lays a basis for further research on whether PUB3 participates in the self-incompatibility signaling pathway.
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Affiliation(s)
- Songmei Shi
- Key Laboratory of Horticulture Science for Southern Mountainous Regions, Ministry of Education/College of Horticulture and Landscape Architecture, Southwest University, Chongqing, China
- Centre of Excellence for Soil Biology, College of Resources and Environment, Southwest University, Chongqing, China
| | - Qiguo Gao
- Key Laboratory of Horticulture Science for Southern Mountainous Regions, Ministry of Education/College of Horticulture and Landscape Architecture, Southwest University, Chongqing, China
| | - Tonghong Zuo
- College of Agronomy and Biotechnology, Southwest University, Chongqing, China
| | - Zhenze Lei
- Key Laboratory of Horticulture Science for Southern Mountainous Regions, Ministry of Education/College of Horticulture and Landscape Architecture, Southwest University, Chongqing, China
| | - Quanming Pu
- Nanchong Academy of Agricultural Sciences, Nanchong, China
| | - Yukui Wang
- College of Agronomy and Biotechnology, Southwest University, Chongqing, China
| | - Guixi Liu
- Key Laboratory of Horticulture Science for Southern Mountainous Regions, Ministry of Education/College of Horticulture and Landscape Architecture, Southwest University, Chongqing, China
| | - Xinhua He
- Centre of Excellence for Soil Biology, College of Resources and Environment, Southwest University, Chongqing, China
- School of Biological Sciences, University of Western Australia, Perth, Western Australia, Australia
| | - Xuesong Ren
- Key Laboratory of Horticulture Science for Southern Mountainous Regions, Ministry of Education/College of Horticulture and Landscape Architecture, Southwest University, Chongqing, China
| | - Liquan Zhu
- College of Agronomy and Biotechnology, Southwest University, Chongqing, China
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32
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Manrique S, Friel J, Gramazio P, Hasing T, Ezquer I, Bombarely A. Genetic insights into the modification of the pre-fertilization mechanisms during plant domestication. JOURNAL OF EXPERIMENTAL BOTANY 2019; 70:3007-3019. [PMID: 31152173 DOI: 10.1093/jxb/erz231] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/25/2018] [Accepted: 05/02/2019] [Indexed: 05/26/2023]
Abstract
Plant domestication is the process of adapting plants to human use by selecting specific traits. The selection process often involves the modification of some components of the plant reproductive mechanisms. Allelic variants of genes associated with flowering time, vernalization, and the circadian clock are responsible for the adaptation of crops, such as rice, maize, barley, wheat, and tomato, to non-native latitudes. Modifications in the plant architecture and branching have been selected for higher yields and easier harvests. These phenotypes are often produced by alterations in the regulation of the transition of shoot apical meristems to inflorescences, and then to floral meristems. Floral homeotic mutants are responsible for popular double-flower phenotypes in Japanese cherries, roses, camellias, and lilies. The rise of peloric flowers in ornamentals such as snapdragon and florists' gloxinia is associated with non-functional alleles that control the relative expansion of lateral and ventral petals. Mechanisms to force outcrossing such as self-incompatibility have been removed in some tree crops cultivars such as almonds and peaches. In this review, we revisit some of these important concepts from the plant domestication perspective, focusing on four topics related to the pre-fertilization mechanisms: flowering time, inflorescence architecture, flower development, and pre-fertilization self-incompatibility mechanisms.
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Affiliation(s)
- Silvia Manrique
- Department of Biosciences, Università degli Studi di Milano, Milan, Italy
| | - James Friel
- Genetics and Biotechnology Laboratory, Plant and AgriBioscience Research Center (PABC), Ryan Institute, National University of Ireland Galway, Galway, Ireland
- School of Plant and Environmental Sciences (SPES), Virginia Tech, Blacksburg, VA, USA
| | - Pietro Gramazio
- Instituto de Conservación y Mejora de la Agrodiversidad Valenciana (COMAV), Universitat Politècnica de València, Valencia, Spain
- Faculty of Life and Environmental Sciences, University of Tsukuba, Tsukuba, Japan
| | - Tomas Hasing
- School of Plant and Environmental Sciences (SPES), Virginia Tech, Blacksburg, VA, USA
| | - Ignacio Ezquer
- Department of Biosciences, Università degli Studi di Milano, Milan, Italy
| | - Aureliano Bombarely
- Department of Biosciences, Università degli Studi di Milano, Milan, Italy
- School of Plant and Environmental Sciences (SPES), Virginia Tech, Blacksburg, VA, USA
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33
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Kawakatsu T, Ecker JR. Diversity and dynamics of DNA methylation: epigenomic resources and tools for crop breeding. BREEDING SCIENCE 2019; 69:191-204. [PMID: 31481828 PMCID: PMC6711733 DOI: 10.1270/jsbbs.19005] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2019] [Accepted: 03/18/2019] [Indexed: 05/17/2023]
Abstract
DNA methylation is an epigenetic modification that can affect gene expression and transposable element (TE) activities. Because cytosine DNA methylation patterns are inherited through both mitotic and meiotic cell divisions, differences in these patterns can contribute to phenotypic variability. Advances in high-throughput sequencing technologies have enabled the generation of abundant DNA sequence data. Integrated analyses of genome-wide gene expression patterns and DNA methylation patterns have revealed the underlying mechanisms and functions of DNA methylation. Moreover, associations between DNA methylation and agronomic traits have also been uncovered. The resulting information may be useful for future applications of natural epigenomic variation, for crop breeding. Additionally, artificial epigenome editing may be an attractive new plant breeding technique for generating novel varieties with improved agronomic traits.
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Affiliation(s)
- Taiji Kawakatsu
- Institute of Agrobiological Sciences, National Agriculture and Food Research Organization,
1-2 Owashi Tsukuba, Ibaraki 305-8634,
Japan
- Corresponding author (e-mail: )
| | - Joseph R. Ecker
- Howard Hughes Medical Institute,
10010 North Torrey Pines Road, La Jolla, CA 92037,
USA
- The Salk Institute for Biological Studies,
10010 North Torrey Pines Road, La Jolla, CA 92037,
USA
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34
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Sehgal N, Singh S. Progress on deciphering the molecular aspects of cell-to-cell communication in Brassica self-incompatibility response. 3 Biotech 2018; 8:347. [PMID: 30073132 PMCID: PMC6066494 DOI: 10.1007/s13205-018-1372-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2018] [Accepted: 07/26/2018] [Indexed: 10/28/2022] Open
Abstract
The sporophytic system of self-incompatibility is a widespread genetic phenomenon in plant species, promoting out-breeding and maintaining genetic diversity. This phenomenon is of commercial importance in hybrid breeding of Brassicaceae crops and is controlled by single S locus with multiple S haplotypes. The molecular genetic studies of Brassica 'S' locus has revealed the presence of three tightly linked loci viz. S-receptor kinase (SRK), S-locus cysteine-rich protein/S-locus protein 11 (SCR/SP11), and S-locus glycoprotein (SLG). On self-pollination, the allele-specific ligand-receptor interaction activates signal transduction in stigma papilla cells and leads to rejection of pollen tube on stigmatic surface. In addition, arm-repeat-containing protein 1 (ARC1), M-locus protein kinase (MLPK), kinase-associated protein phosphatase (KAPP), exocyst complex subunit (Exo70A1) etc. has been identified in Brassica crops and plays a key role in self-incompatibility signaling pathway. Furthermore, the cytoplasmic calcium (Ca2+) influx in papilla cells also mediates self-incompatibility response in Brassicaceae, but how this cytoplasmic Ca2+ influx triggers signal transduction to inhibit pollen hydration is still obscure. There are many other signaling components which are not well characterized yet. Much progress has been made in elucidating the downstream multiple pathways of Brassica self-incompatibility response. Hence, in this review, we have made an effort to describe the recent advances made on understanding the molecular aspects of genetic mechanism of self-incompatibility in Brassicaceae.
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Affiliation(s)
- Nidhi Sehgal
- Department of Vegetable Science, CCS Haryana Agricultural University, Hisar, 125 004 India
| | - Saurabh Singh
- Division of Vegetable Science, ICAR-Indian Agricultural Research Institute (IARI), New Delhi, 110 012 India
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35
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Wang F, Zhong X, Wang H, Song A, Chen F, Fang W, Jiang J, Teng N. Investigation of Differences in Fertility among Progenies from Self-Pollinated Chrysanthemum. Int J Mol Sci 2018. [PMID: 29533976 PMCID: PMC5877693 DOI: 10.3390/ijms19030832] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
Most chrysanthemum cultivars are self-incompatible, so it is very difficult to create pure lines that are important in chrysanthemum breeding and theoretical studies. In our previous study, we obtained a self-compatible chrysanthemum cultivar and its self-pollinated seed set was 56.50%. It was interesting that the seed set of its ten progenies ranged from 0% to 37.23%. Examination of the factors causing the differences in the seed set will lead to an improved understanding of chrysanthemum self-incompatibility, and provide valuable information for creating pure lines. Pollen morphology, pollen germination percentage, pistil receptivity and embryo development were investigated using the in vitro culture method, the paraffin section technique, scanning electron microscopy and transmission electron microscopy. Moreover, RNA sequencing and bioinformatics were applied to analyzing the transcriptomic profiles of mature stigmas and anthers. It was found that the self-pollinated seed set of "Q10-33-1①","Q10-33-1③","Q10-33-1④" and "Q10-33-1⑩" were 37.23%, 26.77%, 7.97% and 0%, respectively. The differences in fertility among four progenies were mainly attributable to differences in pollen germination percentage and pistil receptivity. Failure of the seed set in "Q10-33-1⑩" was possibly due to self-incompatibility. In the transcriptomic files, 22 potential stigma S genes and 8 potential pollen S genes were found out.
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Affiliation(s)
- Fan Wang
- College of Horticulture, Nanjing Agricultural University, Key Laboratory of Landscape Agriculture, Ministry of Agriculture, Nanjing 210095, China.
| | - Xinghua Zhong
- College of Horticulture, Nanjing Agricultural University, Key Laboratory of Landscape Agriculture, Ministry of Agriculture, Nanjing 210095, China.
| | - Haibin Wang
- College of Horticulture, Nanjing Agricultural University, Key Laboratory of Landscape Agriculture, Ministry of Agriculture, Nanjing 210095, China.
| | - Aiping Song
- College of Horticulture, Nanjing Agricultural University, Key Laboratory of Landscape Agriculture, Ministry of Agriculture, Nanjing 210095, China.
| | - Fadi Chen
- College of Horticulture, Nanjing Agricultural University, Key Laboratory of Landscape Agriculture, Ministry of Agriculture, Nanjing 210095, China.
| | - Weimin Fang
- College of Horticulture, Nanjing Agricultural University, Key Laboratory of Landscape Agriculture, Ministry of Agriculture, Nanjing 210095, China.
| | - Jiafu Jiang
- College of Horticulture, Nanjing Agricultural University, Key Laboratory of Landscape Agriculture, Ministry of Agriculture, Nanjing 210095, China.
| | - Nianjun Teng
- College of Horticulture, Nanjing Agricultural University, Key Laboratory of Landscape Agriculture, Ministry of Agriculture, Nanjing 210095, China.
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36
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Parkash C, Kumar S, Singh R, Kumar A, Kumar S, Dey SS, Bhatia R, Kumar R. 'Ogura'-based 'CMS' lines with different nuclear backgrounds of cabbage revealed substantial diversity at morphological and molecular levels. 3 Biotech 2018; 8:27. [PMID: 29276662 DOI: 10.1007/s13205-017-1047-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2017] [Accepted: 12/17/2017] [Indexed: 10/18/2022] Open
Abstract
A comprehensive study on characterization and genetic diversity analysis was carried out in 16 'Ogura'-based 'CMS' lines of cabbage using 14 agro-morphological traits and 29 SSR markers. Agro-morphological characterization depicted considerable variations for different horticultural traits studied. The genotype, ZHA-2, performed better for most of the economically important quantitative traits. Further, gross head weight (0.76), head length (0.60) and head width (0.83) revealed significant positive correlation with net head weight. Dendrogram based on 10 quantitative traits exhibited considerable diversity among different CMS lines and principle component analysis (PCA) indicated that net and gross head weight, and head length and width are the main components of divergence between 16 CMS lines of cabbage. In molecular study, a total of 58 alleles were amplified by 29 SSR primers, averaging to 2.0 alleles in each locus. High mean values of Shannon's Information index (0.62), expected (0.45) and observed (0.32) heterozygosity and polymorphic information content (0.35) depicted substantial polymorphism. Dendrogram based on Jaccard's similarity coefficient constructed two major groups and eight sub-groups, which revealed substantial diversity among different CMS lines. In overall, based on agro-morphological and molecular studies genotype RRMA, ZHA-2 and RCA were found most divergent. Hence, they have immense potential in future breeding programs for the high-yielding hybrid development in cabbage.
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37
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Vijayan V, López-González S, Sánchez F, Ponz F, Pagán I. Virulence evolution of a sterilizing plant virus: Tuning multiplication and resource exploitation. Virus Evol 2017; 3:vex033. [PMID: 29250431 PMCID: PMC5724401 DOI: 10.1093/ve/vex033] [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] [Indexed: 12/16/2022] Open
Abstract
Virulence evolution may have far-reaching consequences for virus epidemiology and emergence, and virologists have devoted increasing effort to understand the modulators of this process. However, still little is known on the mechanisms and determinants of virulence evolution in sterilizing viruses that, as they prevent host reproduction, may have devastating effects on host populations. Theory predicts that sterilizing parasites, including viruses, would evolve towards lower virulence and absolute host sterilization to optimize the exploitation of host resources and maximize fitness. However, this hypothesis has seldom been analyzed experimentally. We investigated the evolution of virulence of the sterilizing plant virus Turnip mosaic virus (TuMV) in its natural host Arabidopsis thaliana by serial passage experiments. After passaging, we quantified virus accumulation and infectivity, the effect of infection on plant growth and development, and virulence of the ancestral and passaged viral genotypes in A. thaliana. Results indicated that serial passaging increased the proportion of infected plants showing absolute sterility, reduced TuMV virulence, and increased virus multiplication and infectivity. Genomic comparison of the ancestral and passaged TuMV genotypes identified significant mutation clustering in the P1, P3, and 6K2 proteins, suggesting a role of these viral proteins in the observed phenotypic changes. Our results support theoretical predictions on the evolution of virulence of sterilizing parasites and contribute to better understand the phenotypic and genetic changes associated with this process.
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Affiliation(s)
- Viji Vijayan
- Centro de Biotecnología y Genómica de Plantas (UPM-INIA), Autopista M-40, km 38, Campus Montegancedo, Pozuelo de Alarcón, 28223 Madrid, Spain
| | - Silvia López-González
- Centro de Biotecnología y Genómica de Plantas (UPM-INIA), Autopista M-40, km 38, Campus Montegancedo, Pozuelo de Alarcón, 28223 Madrid, Spain
| | - Flora Sánchez
- Centro de Biotecnología y Genómica de Plantas (UPM-INIA), Autopista M-40, km 38, Campus Montegancedo, Pozuelo de Alarcón, 28223 Madrid, Spain
| | - Fernando Ponz
- Centro de Biotecnología y Genómica de Plantas (UPM-INIA), Autopista M-40, km 38, Campus Montegancedo, Pozuelo de Alarcón, 28223 Madrid, Spain
| | - Israel Pagán
- Centro de Biotecnología y Genómica de Plantas (UPM-INIA), Autopista M-40, km 38, Campus Montegancedo, Pozuelo de Alarcón, 28223 Madrid, Spain
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38
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Nasrallah JB. Plant mating systems: self-incompatibility and evolutionary transitions to self-fertility in the mustard family. Curr Opin Genet Dev 2017; 47:54-60. [PMID: 28915488 DOI: 10.1016/j.gde.2017.08.005] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2017] [Revised: 08/10/2017] [Accepted: 08/28/2017] [Indexed: 10/18/2022]
Abstract
Flowering plants have evolved diverse mechanisms that promote outcrossing. The most widespread of these outbreeding devices are self-incompatibility systems, the highly selective prefertilization mating barriers that prevent self-fertilization by disrupting pollen-pistil interactions. Despite the advantages of outcrossing, loss of self-incompatibility has occurred repeatedly in many plant families. In the mustard family, the highly polymorphic receptors and ligands that mediate the recognition and inhibition of self-pollen in self-incompatibility have been characterized and the 3D structure of the receptor-ligand complex has been solved. Sequence analyses and empirical studies in self-incompatible and self-compatible species are elucidating the genetic basis of switches from the outcrossing to selfing modes of mating and beginning to provide clues to the diversification of the self recognition repertoire.
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Affiliation(s)
- June B Nasrallah
- Section of Plant Biology, School of Integrative Plant Science, Cornell University, Ithaca, NY 14850, United States of America.
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39
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Takada Y, Murase K, Shimosato-Asano H, Sato T, Nakanishi H, Suwabe K, Shimizu KK, Lim YP, Takayama S, Suzuki G, Watanabe M. Duplicated pollen-pistil recognition loci control intraspecific unilateral incompatibility in Brassica rapa. NATURE PLANTS 2017. [PMID: 28650458 DOI: 10.1038/nplants.2017.96] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
In plants, cell-cell recognition is a crucial step in the selection of optimal pairs of gametes to achieve successful propagation of progeny. Flowering plants have evolved various genetic mechanisms, mediated by cell-cell recognition, to enable their pistils to reject self-pollen, thus preventing inbreeding and the consequent reduced fitness of progeny (self-incompatibility, SI), and to reject foreign pollen from other species, thus maintaining species identity (interspecific incompatibility)1. In the genus Brassica, the SI system is regulated by an S-haplotype-specific interaction between a stigma-expressed female receptor (S receptor kinase, SRK) and a tapetum cell-expressed male ligand (S locus protein 11, SP11), encoded by their respective polymorphic genes at the S locus2-6. However, the molecular mechanism for recognition of foreign pollen, leading to reproductive incompatibility, has not yet been identified. Here, we show that recognition between a novel pair of proteins, a pistil receptor SUI1 (STIGMATIC UNILATERAL INCOMPATIBILITY 1) and a pollen ligand PUI1 (POLLEN UNILATERAL INCOMPATIBILITY 1), triggers unilateral reproductive incompatibility between plants of two geographically distant self-incompatible Brassica rapa lines, even though crosses would be predicted to be compatible based on the S haplotypes of pollen and stigma. Interestingly, SUI1 and PUI1 are similar to the SI genes, SRK and SP11, respectively, and are maintained as cryptic incompatibility genes in these two populations. The duplication of the SRK and SP11 followed by reciprocal loss in different populations would provide a molecular mechanism of the emergence of a reproductive barrier in allopatry.
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Affiliation(s)
- Yoshinobu Takada
- Graduate School of Life Sciences, Tohoku University, Sendai 980-8577, Japan
| | - Kohji Murase
- Graduate School of Biological Sciences, Nara Institute of Science and Technology, Ikoma 630-0192, Japan
- Department of Applied Biological Chemistry, The University of Tokyo, Tokyo 113-8657, Japan
| | - Hiroko Shimosato-Asano
- Graduate School of Biological Sciences, Nara Institute of Science and Technology, Ikoma 630-0192, Japan
| | - Takahiro Sato
- Graduate School of Life Sciences, Tohoku University, Sendai 980-8577, Japan
| | - Honoka Nakanishi
- Division of Natural Science, Osaka Kyoiku University, Kashiwara 582-8582, Japan
| | - Keita Suwabe
- Graduate School of Bioresources, Mie University, Tsu 514-8507, Japan
| | - Kentaro K Shimizu
- Department of Evolutionary Biology and Environmental Studies, University of Zurich, Zurich CH-8057, Switzerland
- Kihara Institute for Biological Research, Yokohama City University, Yokohama 244-0813, Japan
| | - Yong Pyo Lim
- Department of Horticulture, Chungnam National University, Daejeon 34134, Korea
| | - Seiji Takayama
- Graduate School of Biological Sciences, Nara Institute of Science and Technology, Ikoma 630-0192, Japan
- Department of Applied Biological Chemistry, The University of Tokyo, Tokyo 113-8657, Japan
| | - Go Suzuki
- Division of Natural Science, Osaka Kyoiku University, Kashiwara 582-8582, Japan
| | - Masao Watanabe
- Graduate School of Life Sciences, Tohoku University, Sendai 980-8577, Japan
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40
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Kohzuma K, Chiba M, Nagano S, Anai T, Ueda MU, Oguchi R, Shirai K, Hanada K, Hikosaka K, Fujii N. Mutant selection in the self-incompatible plant radish ( Raphanus sativus L. var. sativus) using two-step TILLING. BREEDING SCIENCE 2017; 67:268-276. [PMID: 28744180 PMCID: PMC5515317 DOI: 10.1270/jsbbs.16200] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2016] [Accepted: 03/15/2017] [Indexed: 05/08/2023]
Abstract
Radish (Raphanus sativus L. var. sativus), a widely cultivated root vegetable crop, possesses a large sink organ (the root), implying that photosynthetic activity in radish can be enhanced by altering both the source and sink capacity of the plant. However, since radish is a self-incompatible plant, improved mutation-breeding strategies are needed for this crop. TILLING (Targeting Induced Local Lesions IN Genomes) is a powerful method used for reverse genetics. In this study, we developed a new TILLING strategy involving a two-step mutant selection process for mutagenized radish plants: the first selection is performed to identify a BC1M1 line, that is, progenies of M1 plants crossed with wild-type, and the second step is performed to identify BC1M1 individuals with mutations. We focused on Rubisco as a target, since Rubisco is the most abundant plant protein and a key photosynthetic enzyme. We found that the radish genome contains six RBCS genes and one pseudogene encoding small Rubisco subunits. We screened 955 EMS-induced BC1M1 lines using our newly developed TILLING strategy and obtained six mutant lines for the six RsRBCS genes, encoding proteins with four different types of amino acid substitutions. Finally, we selected a homozygous mutant and subjected it to physiological measurements.
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Affiliation(s)
- Kaori Kohzuma
- Graduate School of Life Sciences, Tohoku University,
Sendai, Miyagi 980-8578,
Japan
- CREST, Japan Science and Technology Agency,
Tokyo 102-0076,
Japan
| | - Motoko Chiba
- Graduate School of Life Sciences, Tohoku University,
Sendai, Miyagi 980-8578,
Japan
- CREST, Japan Science and Technology Agency,
Tokyo 102-0076,
Japan
| | - Soichiro Nagano
- Graduate School of Life Sciences, Tohoku University,
Sendai, Miyagi 980-8578,
Japan
- CREST, Japan Science and Technology Agency,
Tokyo 102-0076,
Japan
| | - Toyoaki Anai
- Faculty of Agriculture, Saga University,
Saga, Saga 840-8502,
Japan
| | - Miki U. Ueda
- Graduate School of Life Sciences, Tohoku University,
Sendai, Miyagi 980-8578,
Japan
| | - Riichi Oguchi
- Graduate School of Life Sciences, Tohoku University,
Sendai, Miyagi 980-8578,
Japan
| | - Kazumasa Shirai
- Frontier Research Academy for Young Researchers, Kyusyu Institute of Technology,
Iizuka, Fukuoka 820-8502,
Japan
- CREST, Japan Science and Technology Agency,
Tokyo 102-0076,
Japan
| | - Kousuke Hanada
- Frontier Research Academy for Young Researchers, Kyusyu Institute of Technology,
Iizuka, Fukuoka 820-8502,
Japan
- CREST, Japan Science and Technology Agency,
Tokyo 102-0076,
Japan
| | - Kouki Hikosaka
- Graduate School of Life Sciences, Tohoku University,
Sendai, Miyagi 980-8578,
Japan
- CREST, Japan Science and Technology Agency,
Tokyo 102-0076,
Japan
| | - Nobuharu Fujii
- Graduate School of Life Sciences, Tohoku University,
Sendai, Miyagi 980-8578,
Japan
- CREST, Japan Science and Technology Agency,
Tokyo 102-0076,
Japan
- Corresponding author (e-mail: )
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41
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Saumitou-Laprade P, Vernet P, Vekemans X, Billiard S, Gallina S, Essalouh L, Mhaïs A, Moukhli A, El Bakkali A, Barcaccia G, Alagna F, Mariotti R, Cultrera NGM, Pandolfi S, Rossi M, Khadari B, Baldoni L. Elucidation of the genetic architecture of self-incompatibility in olive: Evolutionary consequences and perspectives for orchard management. Evol Appl 2017; 10:867-880. [PMID: 29151878 PMCID: PMC5680433 DOI: 10.1111/eva.12457] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2016] [Accepted: 01/05/2017] [Indexed: 12/15/2022] Open
Abstract
The olive (Olea europaea L.) is a typical important perennial crop species for which the genetic determination and even functionality of self‐incompatibility (SI) are still largely unresolved. It is still not known whether SI is under gametophytic or sporophytic genetic control, yet fruit production in orchards depends critically on successful ovule fertilization. We studied the genetic determination of SI in olive in light of recent discoveries in other genera of the Oleaceae family. Using intra‐ and interspecific stigma tests on 89 genotypes representative of species‐wide olive diversity and the compatibility/incompatibility reactions of progeny plants from controlled crosses, we confirmed that O. europaea shares the same homomorphic diallelic self‐incompatibility (DSI) system as the one recently identified in Phillyrea angustifolia and Fraxinus ornus. SI is sporophytic in olive. The incompatibility response differs between the two SI groups in terms of how far pollen tubes grow before growth is arrested within stigma tissues. As a consequence of this DSI system, the chance of cross‐incompatibility between pairs of varieties in an orchard is high (50%) and fruit production may be limited by the availability of compatible pollen. The discovery of the DSI system in O. europaea will undoubtedly offer opportunities to optimize fruit production.
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Affiliation(s)
- Pierre Saumitou-Laprade
- CNRSUMR 8198 Evo-Eco-Paleo Université de Lille - Sciences et Technologies Villeneuve d'Ascq France
| | - Philippe Vernet
- CNRSUMR 8198 Evo-Eco-Paleo Université de Lille - Sciences et Technologies Villeneuve d'Ascq France
| | - Xavier Vekemans
- CNRSUMR 8198 Evo-Eco-Paleo Université de Lille - Sciences et Technologies Villeneuve d'Ascq France
| | - Sylvain Billiard
- CNRSUMR 8198 Evo-Eco-Paleo Université de Lille - Sciences et Technologies Villeneuve d'Ascq France
| | - Sophie Gallina
- CNRSUMR 8198 Evo-Eco-Paleo Université de Lille - Sciences et Technologies Villeneuve d'Ascq France
| | | | - Ali Mhaïs
- Montpellier SupAgro UMR 1334 AGAP Montpellier France.,INRAUR Amélioration des Plantes Marrakech Morocco.,Laboratoire AgroBiotech L02B005 Faculté des Sciences et Techniques Guéliz University Cadi Ayyad Marrakech Morocco
| | | | - Ahmed El Bakkali
- INRAUR Amélioration des Plantes et Conservation des Ressources Phytogénétiques Meknès Morocco
| | - Gianni Barcaccia
- Laboratory of Genomics and Plant Breeding DAFNAE - University of Padova Legnaro PD Italy
| | - Fiammetta Alagna
- Research Unit for Table Grapes and Wine Growing in Mediterranean Environment CREATuriBA Italy.,CNRInstitute of Biosciences and BioresourcesPerugiaItaly
| | | | | | | | - Martina Rossi
- CNRInstitute of Biosciences and BioresourcesPerugiaItaly
| | - Bouchaïb Khadari
- Montpellier SupAgro UMR 1334 AGAP Montpellier France.,INRA/CBNMed UMR 1334 Amélioration Génétique et Adaptation des Plantes (AGAP) Montpellier France
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42
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Bedinger PA, Broz AK, Tovar-Mendez A, McClure B. Pollen-Pistil Interactions and Their Role in Mate Selection. PLANT PHYSIOLOGY 2017; 173:79-90. [PMID: 27899537 PMCID: PMC5210727 DOI: 10.1104/pp.16.01286] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2016] [Accepted: 11/27/2016] [Indexed: 05/20/2023]
Abstract
Pollen-pistil interactions contribute to mate selection at the postmating, prezygotic level.
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Affiliation(s)
- Patricia A Bedinger
- Department of Biology, Colorado State University, Fort Collins, Colorado 80523-1878 (P.A.B., A.K.B.); and
- Division of Biochemistry, University of Missouri, Columbia, Missouri 65211 (A.T.-M., B.M.)
| | - Amanda K Broz
- Department of Biology, Colorado State University, Fort Collins, Colorado 80523-1878 (P.A.B., A.K.B.); and
- Division of Biochemistry, University of Missouri, Columbia, Missouri 65211 (A.T.-M., B.M.)
| | - Alejandro Tovar-Mendez
- Department of Biology, Colorado State University, Fort Collins, Colorado 80523-1878 (P.A.B., A.K.B.); and
- Division of Biochemistry, University of Missouri, Columbia, Missouri 65211 (A.T.-M., B.M.)
| | - Bruce McClure
- Department of Biology, Colorado State University, Fort Collins, Colorado 80523-1878 (P.A.B., A.K.B.); and
- Division of Biochemistry, University of Missouri, Columbia, Missouri 65211 (A.T.-M., B.M.)
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43
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Structural basis for specific self-incompatibility response in Brassica. Cell Res 2016; 26:1320-1329. [PMID: 27824028 DOI: 10.1038/cr.2016.129] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2016] [Revised: 09/04/2016] [Accepted: 09/07/2016] [Indexed: 11/08/2022] Open
Abstract
Self-incompatibility (SI) is a widespread mechanism in flowering plants which prevents self-fertilization and inbreeding. In Brassica, recognition of the highly polymorphic S-locus cysteine-rich protein (SCR; or S-locus protein 11) by the similarly polymorphic S-locus receptor kinase (SRK) dictates the SI specificity. Here, we report the crystal structure of the extracellular domain of SRK9 (eSRK9) in complex with SCR9 from Brassica rapa. SCR9 binding induces eSRK9 homodimerization, forming a 2:2 eSRK:SCR heterotetramer with a shape like the letter "A". Specific recognition of SCR9 is mediated through three hyper-variable (hv) regions of eSRK9. Each SCR9 simultaneously interacts with hvI and one-half of hvII from one eSRK9 monomer and the other half of hvII from the second eSRK9 monomer, playing a major role in mediating SRK9 homodimerization without involving interaction between the two SCR9 molecules. Single mutations of residues critical for the eSRK9-SCR9 interaction disrupt their binding in vitro. Our study rationalizes a body of data on specific recognition of SCR by SRK and provides a structural template for understanding the co-evolution between SRK and SCR.
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44
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Gao Q, Shi S, Liu Y, Pu Q, Liu X, Zhang Y, Zhu L. Identification of a novel MLPK homologous gene MLPKn1 and its expression analysis in Brassica oleracea. PLANT REPRODUCTION 2016; 29:239-250. [PMID: 27342989 DOI: 10.1007/s00497-016-0287-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/17/2016] [Accepted: 06/14/2016] [Indexed: 06/06/2023]
Abstract
M locus protein kinase, one of the SRK-interacting proteins, is a necessary positive regulator for the self-incompatibility response in Brassica. In B. rapa, MLPK is expressed as two different transcripts, MLPKf1 and MLPKf2, and either isoform can complement the mlpk/mlpk mutation. The AtAPK1B gene has been considered to be the ortholog of BrMLPK, and AtAPK1B has no role in self-incompatibility (SI) response in A. thaliana SRK-SCR plants. Until now, what causes the MLPK and APK1B function difference during SI response in Brassica and A. thaliana SRKb-SCRb plants has remained unknown. Here, in addition to the reported MLPKf1/2, we identified the new MLPKf1 homologous gene MLPKn1 from B. oleracea. BoMLPKn1 and BoMLPKf1 shared nucleotide sequence identity as high as 84.3 %, and the most striking difference consisted in two fragment insertions in BoMLPKn1. BoMLPKn1 and BoMLPKf1 had a similar gene structure; both their deduced amino acid sequences contained a typical plant myristoylation consensus sequence and a Ser/Thr protein kinase domain. BoMLPKn1 was widely expressed in petal, sepal, anther, stigma and leaf. Genome-wide survey revealed that the B. oleracea genome contained three MLPK homologous genes: BoMLPKf1/2, BoMLPKn1 and Bol008343n. The B. rapa genome also contained three MLPK homologous genes, BrMLPKf1/2, BraMLPKn1 and Bra040929. Phylogenetic analysis revealed that BoMLPKf1/2 and BrMLPKf1/2 were phylogenetically more distant from AtAPK1A than Bol008343n, Bra040929, BraMLPKn1 and BoMLPKn1, Synteny analysis revealed that the B. oleracea chromosomal region containing BoMLPKn1 displayed high synteny with the A. thaliana chromosomal region containing APK1B, whereas the B. rapa chromosomal region containing BraMLPKn1 showed high synteny with the A. thaliana chromosomal region containing APK1B. Together, these results revealed that BoMLPKn1/BraMLPKn1, and not the formerly reported BoMLPKf1/2 (BrMLPKf1/2), was the orthologous genes of AtAPK1B, and no ortholog of BoMLPKf1/2 (BrMLPKf1/2) was found in the A. thaliana genome. We speculated that Brassica MLPKf1/2 might have emerged after speciation of Brassica and A. thailiana, and that it was recruited to the SRK-triggered SI signaling cascade in Brassica.
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Affiliation(s)
- Qiguo Gao
- Key Laboratory of Horticulture Science for Southern Mountainous Regions, Ministry of Education/College of Horticulture and Landscape Architecture, Southwest University, Chongqing, 400715, China.
| | - Songmei Shi
- Key Laboratory of Horticulture Science for Southern Mountainous Regions, Ministry of Education/College of Horticulture and Landscape Architecture, Southwest University, Chongqing, 400715, China
| | - Yudong Liu
- Key Laboratory of Horticulture Science for Southern Mountainous Regions, Ministry of Education/College of Horticulture and Landscape Architecture, Southwest University, Chongqing, 400715, China
| | - Quanming Pu
- Key Laboratory of Horticulture Science for Southern Mountainous Regions, Ministry of Education/College of Horticulture and Landscape Architecture, Southwest University, Chongqing, 400715, China
| | - Xiaohuan Liu
- Key Laboratory of Horticulture Science for Southern Mountainous Regions, Ministry of Education/College of Horticulture and Landscape Architecture, Southwest University, Chongqing, 400715, China
| | - Ying Zhang
- Key Laboratory of Horticulture Science for Southern Mountainous Regions, Ministry of Education/College of Horticulture and Landscape Architecture, Southwest University, Chongqing, 400715, China
| | - Liquan Zhu
- College of Agronomy and Biotechnology, Southwest University, Chongqing, 400715, China.
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Schoen DJ, Roda MJ. Selection of sporophytic and gametophytic self-incompatibility in the absence of a superlocus. Evolution 2016; 70:1409-17. [PMID: 27111063 DOI: 10.1111/evo.12930] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2015] [Revised: 04/12/2016] [Accepted: 04/15/2016] [Indexed: 11/30/2022]
Abstract
Self-incompatibility (SI) is a complex trait that enforces outcrossing in plant populations. SI generally involves tight linkage of genes coding for the proteins that underlie self-pollen detection and pollen identity specification. Here, we develop two-locus genetic models to address the question of whether sporophytic SI (SSI) and gametophytic SI (GSI) can invade populations of self-compatible plants when there is no linkage or weak linkage of the underlying pollen detection and identity genes (i.e., no S-locus supergene). The models assume that SI evolves as a result of exaptation of genes formerly involved in functions other than SI. Model analysis reveals that SSI and GSI can invade populations even when the underlying genes are loosely linked, provided that inbreeding depression and selfing rate are sufficiently high. Reducing recombination between these genes makes conditions for invasion more lenient. These results can help account for multiple, independent evolution of SI systems as seems to have occurred in the angiosperms.
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Affiliation(s)
- Daniel J Schoen
- Department of Biology, McGill University, Montreal, Quebec, H3A 1B1, Canada.
| | - Megan J Roda
- Department of Biology, McGill University, Montreal, Quebec, H3A 1B1, Canada
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Qu LJ, Li L, Lan Z, Dresselhaus T. Peptide signalling during the pollen tube journey and double fertilization. JOURNAL OF EXPERIMENTAL BOTANY 2015; 66:5139-50. [PMID: 26068467 DOI: 10.1093/jxb/erv275] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
Flowering seed plants (angiosperms) have evolved unique ways to protect their gametes from pathogen attack and from drying out. The female gametes (egg and central cell) are deeply embedded in the maternal tissues of the ovule inside the ovary, while the male gametes (sperm cells) are enclosed in the vegetative pollen tube cell. After germination of the pollen tube at the surface of papilla cells of the stigma the two immobile sperm cells are transported deep inside the sporophytic maternal tissues to be released inside the ovule for double fertilization. Angiosperms have evolved a number of hurdles along the pollen tube journey to prevent inbreeding and fertilization by alien sperm cells, and to maximize reproductive success. These pre-zygotic hybridization barriers require intensive communication between the male and female reproductive cells and the necessity to distinguish self from non-self interaction partners. General molecules such as nitric oxide (NO) or gamma-aminobutyric acid (GABA) therefore appear to play only a minor role in these species-specific communication events. The past 20 years have shown that highly polymorphic peptides play a leading role in all communication steps along the pollen tube pathway and fertilization. Here we review our current understanding of the role of peptides during reproduction with a focus on peptide signalling during self-incompatibility, pollen tube growth and guidance as well as sperm reception and gamete activation.
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Affiliation(s)
- Li-Jia Qu
- State Key Laboratory for Protein and Plant Gene Research, Peking-Tsinghua Center for Life Sciences at College of Life Sciences, Peking University, Beijing 100871, China
| | - Ling Li
- State Key Laboratory for Protein and Plant Gene Research, Peking-Tsinghua Center for Life Sciences at College of Life Sciences, Peking University, Beijing 100871, China
| | - Zijun Lan
- State Key Laboratory for Protein and Plant Gene Research, Peking-Tsinghua Center for Life Sciences at College of Life Sciences, Peking University, Beijing 100871, China
| | - Thomas Dresselhaus
- Cell Biology and Plant Biochemistry, Biochemie-Zentrum Regensburg, University of Regensburg, 93053 Regensburg, Germany
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47
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The range of the morphological features of Brassicaceae s. l.: inflorescence, flower. UKRAINIAN BOTANICAL JOURNAL 2015. [DOI: 10.15407/ukrbotj72.02.122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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Depuydt S. Arguments for and against self and non-self root recognition in plants. FRONTIERS IN PLANT SCIENCE 2014; 5:614. [PMID: 25414719 PMCID: PMC4222137 DOI: 10.3389/fpls.2014.00614] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2014] [Accepted: 10/20/2014] [Indexed: 05/22/2023]
Abstract
Root-root interaction research gained more and more attention over the past few years. Roots are pivotal for plant survival because they ensure uptake of water and nutrients. Therefore, detection of adjacent roots might lead to competitive advantages. Several lines of experimental evidence suggest that roots have ways to discriminate non-related roots, kin, and-importantly-that they can sense self/non-self roots to avoid intra-plant competition. In this mini-review, the existence of self/non-self recognition in plant roots will be discussed and the current knowledge on the mechanisms that could be involved will be summarized. Although the process of identity recognition is still not completely understood, interesting data are available and emerging new technologies will certainly aid to better understand this research field that can have an important biological, ecological, and agricultural impact.
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Affiliation(s)
- Stephen Depuydt
- Ghent University Global Campus, Incheon, South Korea
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Ghent, Belgium
- Department of Plant Systems Biology, Flanders Institute for Biotechnology, Ghent, Belgium
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Yamagishi H, Bhat SR. Cytoplasmic male sterility in Brassicaceae crops. BREEDING SCIENCE 2014; 64:38-47. [PMID: 24987289 PMCID: PMC4031109 DOI: 10.1270/jsbbs.64.38] [Citation(s) in RCA: 66] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/27/2013] [Accepted: 12/05/2013] [Indexed: 05/20/2023]
Abstract
Brassicaceae crops display strong hybrid vigor, and have long been subject to F1 hybrid breeding. Because the most reliable system of F1 seed production is based on cytoplasmic male sterility (CMS), various types of CMS have been developed and adopted in practice to breed Brassicaceae oil seed and vegetable crops. CMS is a maternally inherited trait encoded in the mitochondrial genome, and the male sterile phenotype arises as a result of interaction of a mitochondrial CMS gene and a nuclear fertility restoring (Rf) gene. Therefore, CMS has been intensively investigated for gaining basic insights into molecular aspects of nuclear-mitochondrial genome interactions and for practical applications in plant breeding. Several CMS genes have been identified by molecular genetic studies, including Ogura CMS from Japanese radish, which is the most extensively studied and most widely used. In this review, we discuss Ogura CMS, and other CMS systems, and the causal mitochondrial genes for CMS. Studies on nuclear Rf genes and the cytoplasmic effects of alien cytoplasm on general crop performance are also reviewed. Finally, some of the unresolved questions about CMS are highlighted.
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Affiliation(s)
- Hiroshi Yamagishi
- Faculty of Life Sciences, Kyoto Sangyo University,
Kamigamo, Kita, Kyoto 603-8555,
Japan
- Corresponding author (e-mail: )
| | - Shripad R. Bhat
- National Research Centre of Plant Biotechnology,
New Delhi 10012,
India
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