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Coles DW, Bithell SL, Jeffries T, Cuddy WS, Plett JM. Functional genomics identifies a small secreted protein that plays a role during the biotrophic to necrotrophic shift in the root rot pathogen Phytophthora medicaginis. FRONTIERS IN PLANT SCIENCE 2024; 15:1439020. [PMID: 39224851 PMCID: PMC11366588 DOI: 10.3389/fpls.2024.1439020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/27/2024] [Accepted: 07/15/2024] [Indexed: 09/04/2024]
Abstract
Introduction Hemibiotrophic Phytophthora are a group of agriculturally and ecologically important pathogenic oomycetes causing severe decline in plant growth and fitness. The lifestyle of these pathogens consists of an initial biotrophic phase followed by a switch to a necrotrophic phase in the latter stages of infection. Between these two phases is the biotrophic to necrotrophic switch (BNS) phase, the timing and controls of which are not well understood particularly in Phytophthora spp. where host resistance has a purely quantitative genetic basis. Methods To investigate this we sequenced and annotated the genome of Phytophthora medicaginis, causal agent of root rot and substantial yield losses to Fabaceae hosts. We analyzed the transcriptome of P. medicaginis across three phases of colonization of a susceptible chickpea host (Cicer arietinum) and performed co-regulatory analysis to identify putative small secreted protein (SSP) effectors that influence timing of the BNS in a quantitative pathosystem. Results The genome of P. medicaginis is ~78 Mb, comparable to P. fragariae and P. rubi which also cause root rot. Despite this, it encodes the second smallest number of RxLR (arginine-any amino acid-leucine-arginine) containing proteins of currently sequenced Phytophthora species. Only quantitative resistance is known in chickpea to P. medicaginis, however, we found that many RxLR, Crinkler (CRN), and Nep1-like protein (NLP) proteins and carbohydrate active enzymes (CAZymes) were regulated during infection. Characterization of one of these, Phytmed_10271, which encodes an RxLR effector demonstrates that it plays a role in the timing of the BNS phase and root cell death. Discussion These findings provide an important framework and resource for understanding the role of pathogenicity factors in purely quantitative Phytophthora pathosystems and their implications to the timing of the BNS phase.
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Affiliation(s)
- Donovin W. Coles
- Hawkesbury Institute for the Environment, Western Sydney University, Richmond, NSW, Australia
| | - Sean L. Bithell
- New South Wales Department of Primary Industries, Tamworth, NSW, Australia
| | - Thomas Jeffries
- Hawkesbury Institute for the Environment, Western Sydney University, Richmond, NSW, Australia
- School of Science and Health, Western Sydney University, Penrith, NSW, Australia
| | - William S. Cuddy
- New South Wales Department of Primary Industries, Elizabeth Macarthur Agricultural Institute, Menangle, NSW, Australia
| | - Jonathan M. Plett
- Hawkesbury Institute for the Environment, Western Sydney University, Richmond, NSW, Australia
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Adamczyk S, Latvala S, Poimala A, Adamczyk B, Hytönen T, Pennanen T. Diterpenes and triterpenes show potential as biocides against pathogenic fungi and oomycetes: a screening study. Biotechnol Lett 2023; 45:1555-1563. [PMID: 37910278 PMCID: PMC10635980 DOI: 10.1007/s10529-023-03438-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Revised: 08/24/2023] [Accepted: 09/18/2023] [Indexed: 11/03/2023]
Abstract
OBJECTIVES The aim was to screen di- and triterpenes as potential biocides against fungal pathogens (Alternaria sp., Fusarium avenaceum, F. sambucinum, Botrytis cinerea, Botryotina fuckeliana, Mycocentrospora acerina, Cylindrocarpon sp.) and oomycetes (Phytophthora cactorum, P. fragariae). Results We measured the antifungal activity of terpenes by estimating the growth area, ergosterol content and level of lipid peroxidation. Fungi and oomycetes were grown on solid media in Petri dishes. As a positive control, we used a common synthetic fungicide, fosetyl-Al. Di- and triterpenes showed promising potential as biocides against most of the studied species. The responses of fungi and oomycetes were dependent on the specific type of terpenes and identity of the fungi. Compared to synthetic fungicide, terpenes were equally effective as antifungal agents and even more effective for some species, especially for oomycetes. The terpene mode of action includes inhibition of ergosterol synthesis and increased lipid peroxidation. Conclusions Di- and triterpenes, natural compounds that are very abundant in northern countries, are excellent candidates for biocides.
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Affiliation(s)
- Sylwia Adamczyk
- Natural Resources Institute Finland (Luke), Latokartanonkaari 9, 00790, Helsinki, Finland.
| | - Satu Latvala
- Natural Resources Institute Finland (Luke), Latokartanonkaari 9, 00790, Helsinki, Finland
| | - Anna Poimala
- Natural Resources Institute Finland (Luke), Latokartanonkaari 9, 00790, Helsinki, Finland
| | - Bartosz Adamczyk
- Natural Resources Institute Finland (Luke), Latokartanonkaari 9, 00790, Helsinki, Finland
| | - Tuija Hytönen
- Natural Resources Institute Finland (Luke), Latokartanonkaari 9, 00790, Helsinki, Finland
| | - Taina Pennanen
- Natural Resources Institute Finland (Luke), Latokartanonkaari 9, 00790, Helsinki, Finland
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3
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Sapkota S, Burlakoti RR, Lubberts M, Lamour K. Genome resources and whole genome resequencing of Phytophthora rubi isolates from red raspberry. FRONTIERS IN PLANT SCIENCE 2023; 14:1161864. [PMID: 37457337 PMCID: PMC10339809 DOI: 10.3389/fpls.2023.1161864] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/08/2023] [Accepted: 05/15/2023] [Indexed: 07/18/2023]
Abstract
Phytophthora rubi is a primary causal agent of Phytophthora root rot and wilting of raspberry (Rubus idaeus L.) worldwide. The disease is a major concern for raspberry growers in Canada and USA. To date, no information is available on genomic diversity of P. rubi population from raspberry in Canada. Using a PCR-free library prep with dual-indexing for an Illumina HiSEQX running a 2x150 bp configuration, we generated whole genome sequence data of P. rubi isolates (n = 25) recovered during 2018 to 2020 from nine fields, four locations and four cultivars of raspberry growing areas of British Columbia, Canada. The assembled genome of 24 isolates of P. rubi averaged 8,541 scaffolds, 309× coverage, and 65,960,000 bp. We exploited single nucleotide polymorphisms (SNPs) obtained from whole genome sequence data to analyze the genome structure and genetic diversity of the P. rubi isolates. Low heterozygosity among the 72% of pathogen isolates and standardized index of association revealed that those isolates were clonal. Principal component analysis, discriminant analysis of principal component, and phylogenetic tree revealed that P. rubi isolates clustered with the raspberry specific cultivars. This study provides novel resources and insight into genome structure, genetic diversity, and reproductive biology of P rubi isolated from red raspberry. The availability of the P. rubi genomes also provides valuable resources for future comparative genomic and evolutionary studies for oomycetes pathogens.
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Affiliation(s)
- Sanjib Sapkota
- Agassiz Research and Development Centre, Agriculture and Agri-Food Canada, Agassiz, BC, Canada
| | - Rishi R. Burlakoti
- Agassiz Research and Development Centre, Agriculture and Agri-Food Canada, Agassiz, BC, Canada
| | - Mark Lubberts
- Summerland Research and Development Centre, Agriculture and Agri-Food Canada, Summerland, BC, Canada
| | - Kurt Lamour
- Department of Entomology and Plant Pathology, University of Tennessee, Knoxville, TN, United States
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4
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Jiménez NP, Feldmann MJ, Famula RA, Pincot DDA, Bjornson M, Cole GS, Knapp SJ. Harnessing underutilized gene bank diversity and genomic prediction of cross usefulness to enhance resistance to Phytophthora cactorum in strawberry. THE PLANT GENOME 2023; 16:e20275. [PMID: 36480594 DOI: 10.1002/tpg2.20275] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2022] [Accepted: 09/19/2022] [Indexed: 05/10/2023]
Abstract
The development of strawberry (Fragaria × ananassa Duchesne ex Rozier) cultivars resistant to Phytophthora crown rot (PhCR), a devastating disease caused by the soil-borne pathogen Phytophthora cactorum (Lebert & Cohn) J. Schröt., has been challenging partly because the resistance phenotypes are quantitative and only moderately heritable. To develop deeper insights into the genetics of resistance and build the foundation for applying genomic selection, a genetically diverse training population was screened for resistance to California isolates of the pathogen. Here we show that genetic gains in breeding for resistance to PhCR have been negligible (3% of the cultivars tested were highly resistant and none surpassed early 20th century cultivars). Narrow-sense genomic heritability for PhCR resistance ranged from 0.41 to 0.75 among training population individuals. Using multivariate genome-wide association studies (GWAS), we identified a large-effect locus (predicted to be RPc2) that explained 43.6-51.6% of the genetic variance, was necessary but not sufficient for resistance, and was associated with calcium channel and other candidate genes with known plant defense functions. The addition of underutilized gene bank resources to our training population doubled additive genetic variance, increased the accuracy of genomic selection, and enabled the discovery of individuals carrying favorable alleles that are either rare or not present in modern cultivars. The incorporation of an RPc2-associated single-nucleotide polymorphism (SNP) as a fixed effect increased genomic prediction accuracy from 0.40 to 0.55. Finally, we show that parent selection using genomic-estimated breeding values, genetic variances, and cross usefulness holds promise for enhancing resistance to PhCR in strawberry.
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Affiliation(s)
- Nicolás P Jiménez
- Dep. of Plant Sciences, Univ. of California, One Shields Ave, Davis, CA, 95616, USA
| | - Mitchell J Feldmann
- Dep. of Plant Sciences, Univ. of California, One Shields Ave, Davis, CA, 95616, USA
| | - Randi A Famula
- Dep. of Plant Sciences, Univ. of California, One Shields Ave, Davis, CA, 95616, USA
| | - Dominique D A Pincot
- Dep. of Plant Sciences, Univ. of California, One Shields Ave, Davis, CA, 95616, USA
| | - Marta Bjornson
- Dep. of Plant Sciences, Univ. of California, One Shields Ave, Davis, CA, 95616, USA
| | - Glenn S Cole
- Dep. of Plant Sciences, Univ. of California, One Shields Ave, Davis, CA, 95616, USA
| | - Steven J Knapp
- Dep. of Plant Sciences, Univ. of California, One Shields Ave, Davis, CA, 95616, USA
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5
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In silico characterization of molecular factors involved in metabolism and pathogenicity of Phytophthora cinnamomi. Mol Biol Rep 2021; 49:1463-1473. [PMID: 34751913 DOI: 10.1007/s11033-021-06901-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2020] [Accepted: 10/29/2021] [Indexed: 10/19/2022]
Abstract
Phytophthora cinnamomi is classified as one of the most devastating plant pathogens in the world. It has a destructive effect on more than 5000 horticultural and forestry species in the world, and especially on Castanea sativa. The genus Phytophthora belongs to the Class Oomycetes, a group of fungus like organisms which provoke plant diseases via motile zoospores. Control of this organism is considered very challenging because of the limited range of effective chemical inhibitors. The development of sustainable control measures for the future management of P. cinnamomi requires in-depth knowledge of the cellular and molecular bases of development and metabolism. The aim of this review was to identify molecular factors associated with the metabolism of P. cinnamomi by studying the genes implicated in fundamental metabolism using tools of bioinformatics. Also, some genes involved in pathogenicity will be cited and characterized, such as genes coding for transglycosylases. Genomic sequences of P. cinnamomi were analyzed using an open reading frame (ORF) finder. The identified ORFs products (proteins) were compared to sequences already described and with known functions present in databases such as NCBI and fungi database. In this way, homologous proteins were found, with the respective specific domains, to proteins involved in the metabolism and pathogenicity of Phytophthora ssp.
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6
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Nellist CF, Armitage AD, Bates HJ, Sobczyk MK, Luberti M, Lewis LA, Harrison RJ. Comparative Analysis of Host-Associated Variation in Phytophthora cactorum. Front Microbiol 2021; 12:679936. [PMID: 34276614 PMCID: PMC8285097 DOI: 10.3389/fmicb.2021.679936] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2021] [Accepted: 05/21/2021] [Indexed: 12/30/2022] Open
Abstract
Phytophthora cactorum is often described as a generalist pathogen, with isolates causing disease in a range of plant species. It is the causative agent of two diseases in the cultivated strawberry, crown rot (CR; causing whole plant collapse) and leather rot (LR; affecting the fruit). In the cultivated apple, P. cactorum causes girdling bark rots on the scion (collar rot) and rootstock (crown rot), as well as necrosis of the fine root system (root rot) and fruit rots. We investigated evidence for host specialisation within P. cactorum through comparative genomic analysis of 18 isolates. Whole genome phylogenetic analysis provided genomic support for discrete lineages within P. cactorum, with well-supported non-recombining clades for strawberry CR and apple infecting isolates specialised to strawberry crowns and apple tissue. Isolates of strawberry CR are genetically similar globally, while there is more diversity in apple-infecting isolates. We sought to identify the genetic basis of host specialisation, demonstrating gain and loss of effector complements within the P. cactorum phylogeny, representing putative determinants of host boundaries. Transcriptomic analysis highlighted that those effectors found to be specific to a single host or expanded in the strawberry lineage are amongst those most highly expressed during infection of strawberry and give a wider insight into the key effectors active during strawberry infection. Many effectors that had homologues in other Phytophthoras that have been characterised as avirulence genes were present but not expressed in our tested isolate. Our results highlight several RxLR-containing effectors that warrant further investigation to determine whether they are indeed virulence factors and host-specificity determinants for strawberry and apple. Furthermore, additional work is required to determine whether these effectors are suitable targets to focus attention on for future resistance breeding efforts.
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Affiliation(s)
| | - Andrew D. Armitage
- NIAB EMR, East Malling, United Kingdom
- National Resources Institute, University of Greenwich, Chatham, United Kingdom
| | - Helen J. Bates
- NIAB EMR, East Malling, United Kingdom
- NIAB, Cambridge, United Kingdom
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7
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Gómez-Pérez D, Kemen E. Predicting Lifestyle from Positive Selection Data and Genome Properties in Oomycetes. Pathogens 2021; 10:807. [PMID: 34202069 PMCID: PMC8308905 DOI: 10.3390/pathogens10070807] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Revised: 06/19/2021] [Accepted: 06/21/2021] [Indexed: 11/30/2022] Open
Abstract
As evidenced in parasitism, host and niche shifts are a source of genomic and phenotypic diversification. Exemplary is a reduction in the core metabolism as parasites adapt to a particular host, while the accessory genome often maintains a high degree of diversification. However, selective pressures acting on the genome of organisms that have undergone recent lifestyle or host changes have not been fully investigated. Here, we developed a comparative genomics approach to study underlying adaptive trends in oomycetes, a eukaryotic phylum with a wide and diverse range of economically important plant and animal parasitic lifestyles. Our analysis reveals converging evolution on biological processes for oomycetes that have similar lifestyles. Moreover, we find that certain functions, in particular carbohydrate metabolism, transport, and signaling, are important for host and environmental adaptation in oomycetes. Given the high correlation between lifestyle and genome properties in our oomycete dataset, together with the known convergent evolution of fungal and oomycete genomes, we developed a model that predicts plant pathogenic lifestyles with high accuracy based on functional annotations. These insights into how selective pressures correlate with lifestyle may be crucial to better understand host/lifestyle shifts and their impact on the genome.
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Affiliation(s)
| | - Eric Kemen
- Center for Plant Molecular Biology (ZMBP), University of Tübingen, 72074 Tübingen, Germany;
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8
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Liu H, Wu S, Li A, Ruan J. SMARTdenovo: a de novo assembler using long noisy reads. GIGABYTE 2021; 2021:gigabyte15. [PMID: 36824332 PMCID: PMC9632051 DOI: 10.46471/gigabyte.15] [Citation(s) in RCA: 89] [Impact Index Per Article: 29.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2020] [Accepted: 03/05/2021] [Indexed: 12/11/2022] Open
Abstract
Long-read single-molecule sequencing has revolutionized de novo genome assembly and enabled the automated reconstruction of reference-quality genomes. It has also been widely used to study structural variants, phase haplotypes and more. Here, we introduce the assembler SMARTdenovo, a single-molecule sequencing (SMS) assembler that follows the overlap-layout-consensus (OLC) paradigm. SMARTdenovo (RRID: SCR_017622) was designed to be a rapid assembler, which, unlike contemporaneous SMS assemblers, does not require highly accurate raw reads for error correction. It has performed well in the evaluation of congeneric assemblers and has been successfully users for various assembly projects. It is compatible with Canu for assembling high-quality genomes, and several of the assembly strategies in this program have been incorporated into subsequent popular assemblers. The assembler has been in use since 2015; here we provide information on the development of SMARTdenovo and how to implement its algorithms into current projects.
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Affiliation(s)
- Hailin Liu
- Guangdong Laboratory for Lingnan Modern Agriculture, Genome Analysis Laboratory of the Ministry of Agriculture, Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen 518120, China
| | - Shigang Wu
- Guangdong Laboratory for Lingnan Modern Agriculture, Genome Analysis Laboratory of the Ministry of Agriculture, Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen 518120, China
| | - Alun Li
- Guangdong Laboratory for Lingnan Modern Agriculture, Genome Analysis Laboratory of the Ministry of Agriculture, Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen 518120, China
| | - Jue Ruan
- Guangdong Laboratory for Lingnan Modern Agriculture, Genome Analysis Laboratory of the Ministry of Agriculture, Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen 518120, China
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9
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Gao RF, Wang JY, Liu KW, Yoshida K, Hsiao YY, Shi YX, Tsai KC, Chen YY, Mitsuda N, Liang CK, Wang ZW, Wang Y, Zhang DY, Huang L, Zhao X, Zhong WY, Cheng YH, Jiang ZD, Li MH, Sun WH, Yu X, Hu W, Zhou Z, Zhou XF, Yeh CM, Katoh K, Tsai WC, Liu ZJ, Martin F, Zhang GM. Comparative analysis of Phytophthora genomes reveals oomycete pathogenesis in crops. Heliyon 2021; 7:e06317. [PMID: 33665461 PMCID: PMC7907477 DOI: 10.1016/j.heliyon.2021.e06317] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2020] [Revised: 12/14/2020] [Accepted: 02/16/2021] [Indexed: 01/19/2023] Open
Abstract
The oomycete genus Phytophthora includes devastating plant pathogens that are found in almost all ecosystems. We sequenced the genomes of two quarantined Phytophthora species–P. fragariae and P. rubi. Comparing these Phytophthora species and related genera allowed reconstruction of the phylogenetic relationships within the genus Phytophthora and revealed Phytophthora genomic features associated with infection and pathogenicity. We found that several hundred Phytophthora genes are putatively inherited from red algae, but Phytophthora does not have vestigial plastids originating from phototrophs. The horizontally-transferred Phytophthora genes are abundant transposons that “transmit” exogenous gene to Phytophthora species thus bring about the gene recombination possibility. Several expansion events of Phytophthora gene families associated with cell wall biogenesis can be used as mutational targets to elucidate gene function in pathogenic interactions with host plants. This work enhanced the understanding of Phytophthora evolution and will also be helpful for the design of phytopathological control strategies.
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Affiliation(s)
- Rui-Fang Gao
- Animal & Plant Inspection and Quarantine Technology Center of Shenzhen Customs District P.R. China, Shenzhen 518045, China.,Shenzhen Key Laboratory for Research & Development on Detection Technology of Alien Pests, Shenzhen Academy of Inspection and Quarantine, Shenzhen 518045, China
| | - Jie-Yu Wang
- Key Laboratory of National Forestry and Grassland Administration for Orchid Conservation and Utilization at College of Landscape Architecture, Fujian Agriculture and Forestry University, Fuzhou 350002, China.,Key Laboratory of Plant Resources Conservation and Sustainable Utilization, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China
| | - Ke-Wei Liu
- School of Life Sciences, Tsinghua University, Beijing 100084, China.,Center for Biotechnology and Biomedicine, Shenzhen Key Laboratory of Gene and Antibody Therapy State Key Laboratory of Health Sciences and Technology (prep), Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, China.,Center for Precision Medicine and Healthcare, Tsinghua-Berkeley Shenzhen Institute (TBSI), Shenzhen 518055, China
| | - Kouki Yoshida
- Technology Center, Taisei Corporation, Nase-cho 344-1, Totsuka-ku, Yokohama, Kanagawa 245-0051, Japan
| | - Yu-Yun Hsiao
- Orchid Research and Development Center, National Cheng Kung University, Tainan 701, Taiwan
| | - Yi-Xiang Shi
- Shanghai Major Bio-pharm Technology Co., Ltd., Shanghai 201203, China
| | | | - You-Yi Chen
- Department of Life Sciences, National Cheng Kung University, Tainan 701, Taiwan
| | - Nobutaka Mitsuda
- Bioproduction Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Central 6, Higashi 1-1-1, Tsukuba, Ibaraki 305-8562, Japan
| | - Chieh-Kai Liang
- Department of Life Sciences, National Cheng Kung University, Tainan 701, Taiwan
| | - Zhi-Wen Wang
- PubBio-Tech Services Corporation, Wuhan 430070, China
| | - Ying Wang
- Animal & Plant Inspection and Quarantine Technology Center of Shenzhen Customs District P.R. China, Shenzhen 518045, China.,Shenzhen Key Laboratory for Research & Development on Detection Technology of Alien Pests, Shenzhen Academy of Inspection and Quarantine, Shenzhen 518045, China
| | - Di-Yang Zhang
- Key Laboratory of National Forestry and Grassland Administration for Orchid Conservation and Utilization at College of Landscape Architecture, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Laiqiang Huang
- School of Life Sciences, Tsinghua University, Beijing 100084, China.,Center for Biotechnology and Biomedicine, Shenzhen Key Laboratory of Gene and Antibody Therapy State Key Laboratory of Health Sciences and Technology (prep), Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, China
| | - Xiang Zhao
- PubBio-Tech Services Corporation, Wuhan 430070, China
| | | | - Ying-Hui Cheng
- Fairylake Botanical Garden, Shenzhen & Chinese Academy of Sciences, Shenzhen 518004, China
| | - Zi-De Jiang
- College of Agriculture, South China Agricultural University, Guangzhou 510640, China
| | - Ming-He Li
- Key Laboratory of National Forestry and Grassland Administration for Orchid Conservation and Utilization at College of Landscape Architecture, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Wei-Hong Sun
- Key Laboratory of National Forestry and Grassland Administration for Orchid Conservation and Utilization at College of Landscape Architecture, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Xia Yu
- Key Laboratory of National Forestry and Grassland Administration for Orchid Conservation and Utilization at College of Landscape Architecture, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Wenqi Hu
- Key Laboratory of National Forestry and Grassland Administration for Orchid Conservation and Utilization at College of Landscape Architecture, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Zhuang Zhou
- Key Laboratory of National Forestry and Grassland Administration for Orchid Conservation and Utilization at College of Landscape Architecture, Fujian Agriculture and Forestry University, Fuzhou 350002, China.,Zhejiang Institute of Subtropical Crops, Zhejiang Academy of Agricultural Sciences, Wenzhou 325005, China
| | - Xiao-Fan Zhou
- College of Agriculture, South China Agricultural University, Guangzhou 510640, China
| | - Chuan-Ming Yeh
- Bioproduction Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Central 6, Higashi 1-1-1, Tsukuba, Ibaraki 305-8562, Japan.,Graduate School of Science and Engineering, Saitama University, 255 Shimo-Okubo, Sakura-ku, Saitama 338-8570, Japan.,Institute of Molecular Biology, National Chung Hsing University, Taichung 40227, Taiwan
| | - Kazutaka Katoh
- Research Institute for Microbial Diseases, Osaka University, 3-1 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Wen-Chieh Tsai
- Orchid Research and Development Center, National Cheng Kung University, Tainan 701, Taiwan.,Department of Life Sciences, National Cheng Kung University, Tainan 701, Taiwan.,Institute of Tropical Plant Sciences and Microbiology, National Cheng Kung University, Tainan 701, Taiwan
| | - Zhong-Jian Liu
- Key Laboratory of National Forestry and Grassland Administration for Orchid Conservation and Utilization at College of Landscape Architecture, Fujian Agriculture and Forestry University, Fuzhou 350002, China.,Center for Biotechnology and Biomedicine, Shenzhen Key Laboratory of Gene and Antibody Therapy State Key Laboratory of Health Sciences and Technology (prep), Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, China.,Zhejiang Institute of Subtropical Crops, Zhejiang Academy of Agricultural Sciences, Wenzhou 325005, China.,Institute of Vegetable and Flowers, Shandong Academy of Agricultural Sciences, 250100, Jinan, China
| | - Francis Martin
- Institut National de la Recherche Agronomique, UMR Interactions Arbres/Microorganismes, Centre INRA Grand Est-Nancy, Université de Lorraine, 54280 Champenoux, France
| | - Gui-Ming Zhang
- Animal & Plant Inspection and Quarantine Technology Center of Shenzhen Customs District P.R. China, Shenzhen 518045, China.,Shenzhen Key Laboratory for Research & Development on Detection Technology of Alien Pests, Shenzhen Academy of Inspection and Quarantine, Shenzhen 518045, China
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