1
|
Mandal MK, Koike ST, Tsuchida C, Stanghellini H, Guerrero J, Sandoya GV, Klosterman SJ, Simko I, Subbarao KV. Distribution of Three Verticillium dahliae Races in Coastal California and Evaluation of Resistance in Lettuce. PLANT DISEASE 2024; 108:2170-2180. [PMID: 38506911 DOI: 10.1094/pdis-01-24-0193-re] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/21/2024]
Abstract
Verticillium wilt, caused by Verticillium dahliae, is one of the most devastating soilborne diseases of lettuce (Lactuca sativa L.). There are three races of V. dahliae, and each race has been characterized by markers representing race-specific effectors. Race 1 is differentiated by the presence of the functional secretory Ave1 effector. Similarly, races 2 and 3 are differentiated by effectors VdR2e and VdR3e, respectively. Although the presence of race 1 in coastal California was well established, the presence of effector-based races 2 and 3 was uncertain. This study therefore focused on characterizing 727 isolates collected from 142 ranches of symptomatic lettuce and other crops from coastal California. Based on this evaluation, 523 isolates were designated as race 1, 20 isolates as race 2, 23 isolates as race 3, and 17 as race undefined. Isolates representing other Verticillium species totaled 110, and 34 were non-Verticillium fungal species. Because the use of resistant cultivars is a key strategy to manage this disease, we evaluated 48 lettuce germplasm lines and 1 endive (Cichorium endivia L.) line, comprising commercial cultivars and breeding lines, including the race 1-resistant heirloom cultivar La Brillante and the susceptible cultivar Salinas as controls. Resistance against races 1, 2, and 3 along with VdLs17, a virulent isolate of V. dahliae from lettuce that is currently not assigned to a race, was evaluated in replicated greenhouse experiments. Two crisphead lettuce lines, HL28 and HL29, exhibited resistance against race 1 and a partial resistance against race 2, whereas all other lines were highly susceptible to races 1 and 2 and VdLs17. The majority of lines exhibited higher resistance to race 3 relative to the other two races. This study documents the current distribution of the different races in coastal California. In addition, the sources of resistance currently being developed should be effective or partially effective against these races for targeted deployment as soon as they are available.
Collapse
Affiliation(s)
- Mihir K Mandal
- Department of Plant Pathology, University of California, Davis, c/o Sam Farr United States Crop Improvement and Protection Research Center, Salinas, CA 93905
| | | | | | | | | | - Germán V Sandoya
- Horticultural Sciences Department, Everglades Research & Education Center, University of Florida, Belle Glade, FL 33430
| | - Steven J Klosterman
- Sam Farr United States Crop Improvement and Protection Research Center, U.S. Department of Agriculture, Agricultural Research Service, Salinas, CA 93905
| | - Ivan Simko
- Sam Farr United States Crop Improvement and Protection Research Center, U.S. Department of Agriculture, Agricultural Research Service, Salinas, CA 93905
| | - Krishna V Subbarao
- Department of Plant Pathology, University of California, Davis, c/o Sam Farr United States Crop Improvement and Protection Research Center, Salinas, CA 93905
| |
Collapse
|
2
|
Simko I, Zhao R. Phenotypic characterization, plant growth and development, genome methylation, and mineral elements composition of neotetraploid lettuce ( Lactuca sativa L.). FRONTIERS IN PLANT SCIENCE 2023; 14:1296660. [PMID: 38143587 PMCID: PMC10739468 DOI: 10.3389/fpls.2023.1296660] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/18/2023] [Accepted: 11/27/2023] [Indexed: 12/26/2023]
Abstract
Stable neotetraploid lines of lettuce (Lactuca sativa L.) were produced from three phenotypically distinct cultivars (Annapolis, Eruption, Merlot) and an advanced breeding line (SM13-L2) using colchicine treatment of seeds or young seedlings. When tested under the greenhouse and field conditions, neotetraploids initially grew more rapidly than their diploid progenitors, however they reached their reproductive stage (bolting, flower bud formation, and flowering) substantially later. Seeds production on neotetraploids was delayed by more than 30 days compared to diploids. Tetraploid plants had fewer, but larger stomata and leaves, less chlorophyll per area, higher photosystem II photochemical efficiency, generally lighter root system, and produced less than 1% of seeds in comparison with diploids. Field-grown neotetraploids of all lines displayed a significant reduction in tipburn (1.8% vs. 22.2%, respectively), a highly undesirable physiological disorder. Changes in leaf and root mineral composition were detected in neotetraploids. Several elements were found in lower abundance than in diploids, most notably iron, calcium, and silicon. Whole genome bisulfite sequencing (WGBS) revealed 498 differentially methylated regions (DMR), with 106 of these regions having at least 50% difference in the level of methylation between neotetraploids and their diploid progenitors. At least 18 of the most prominent DMR were detected in proximity to genes predicted to be involved in plant development or reaction to biotic and abiotic stressors. Because neotetraploid lines have low seed production, they are not suitable for commercial cultivation. They can be used, however, in research to study the factors contributing to tipburn, traits affected by stomata size or density, and the effect of ploidy on resistance to environmental stressors.
Collapse
Affiliation(s)
- Ivan Simko
- Sam Farr United States Crop Improvement and Protection Research Center, Agricultural Research Service, U.S. Department of Agriculture, Salinas, CA, United States
| | | |
Collapse
|
3
|
Nayak S, Richardson K. Inheritance of Partial Resistance to Isolate VdLs17 of Verticillium dahliae Within Lactuca spp. PLANT DISEASE 2023; 107:3868-3876. [PMID: 37311229 DOI: 10.1094/pdis-09-22-2194-re] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Lettuce (Lactuca sativa L.) production is greatly threatened by Verticillium wilt, which is caused by three pathogenic races (races 1, 2, and 3) of the soilborne fungus Verticillium dahliae. Race 1 is predominant, and resistant varieties that provide full protection against it are commercially available. However, heavily relying on race 1-resistant cultivars could shift the population towards resistance-breaking isolates and impact the durability of plant resistance. This study determined the inheritance of partial resistance to isolate VdLs17 of V. dahliae within Lactuca spp. using 258 F2:3 progeny generated from a cross between two partially resistant accessions, 11G99 (L. serriola) and PI 171674 (L. sativa). Eight experiments were performed under greenhouse and growth room conditions across 3 years using a randomized complete block design, and segregation analysis was conducted to determine the inheritance pattern. The results indicate that partial resistance to isolate VdLs17 of V. dahliae is conditioned by a two-major-gene genetic model with additive-dominance-epistatic effects. Transgressive segregants were infrequent but observed in both directions, indicating that favorable and adverse alleles are dispersed in both parents. Combining favorable alleles of these two partially resistant parents appears to be challenging because of epistatic effects and a significant role of environment in disease severity. The probability of capturing favorable additive genes could be maximized by generating and evaluating a large population and making selections at late generations. This study provides valuable insights into the inheritance pattern of partial resistance to isolate VdLs17 of V. dahliae that will be helpful in designing efficient breeding strategies in lettuce.[Formula: see text] Copyright © 2023 The Author(s). This is an open access article distributed under the CC BY-NC-ND 4.0 International license.
Collapse
Affiliation(s)
- Santosh Nayak
- Crop Improvement and Protection Research Unit, Agricultural Research Service, U.S. Department of Agriculture, Salinas, CA 93905
| | - Kelley Richardson
- Crop Improvement and Protection Research Unit, Agricultural Research Service, U.S. Department of Agriculture, Salinas, CA 93905
| |
Collapse
|
4
|
Vining KJ, Pandelova I. Dynamic Tissue—Specific Transcriptome Changes in Response to Verticillium dahliae in Wild Mint Species Mentha longifolia. PLANTS 2022; 11:plants11050674. [PMID: 35270144 PMCID: PMC8912525 DOI: 10.3390/plants11050674] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/01/2022] [Revised: 02/23/2022] [Accepted: 02/23/2022] [Indexed: 11/19/2022]
Abstract
Mentha longifolia is a wild mint species being used as a model to study the genetics of resistance to the fungal wilt pathogen Verticillium dahliae. We used high-throughput Illumina sequencing to study gene expression in response to V. dahliae inoculation in two M. longifolia USDA accessions with contrasting phenotypes: wilt-resistant CMEN 585 and wilt-susceptible CMEN 584. Roots and stems were sampled at two early post-inoculation time points, four hours and twenty-four hours, and again at ten days and twenty days post-inoculation. Overall, many more genes were differentially-regulated in wilt-resistant CMEN 585 than in wilt-susceptible CMEN 584. The greatest numbers of differentially expressed genes were found in the roots of CMEN 585 at the early time points. Specific genes exhibiting early, strong upregulation in roots of CMEN 585 but not in CMEN 584 included homologs of known plant defense response genes as well as genes involved in monoterpene biosynthesis. These genes were also upregulated in stems at the later time points. This study provides a comprehensive view of transcription reprogramming in Verticillium wilt-resistant mint, which will be the basis for further study and for molecular marker development.
Collapse
|
5
|
Deng Y, Qin Y, Yang P, Du J, Kuang Z, Zhao Y, Wang Y, Li D, Wei J, Guo X, Li L, Yang X. Comprehensive Annotation and Functional Exploration of MicroRNAs in Lettuce. FRONTIERS IN PLANT SCIENCE 2021; 12:781836. [PMID: 35003165 PMCID: PMC8739914 DOI: 10.3389/fpls.2021.781836] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/23/2021] [Accepted: 10/28/2021] [Indexed: 05/28/2023]
Abstract
MicroRNA (miRNA) is an important endogenous post-transcriptional regulator, while lettuce (Lactuca sativa) is a leafy vegetable of global economic significance. However, there are few studies on miRNAs in lettuce, and research on miRNA regulatory network in lettuce is absent. In this study, through deep sequencing of small RNAs in different tissues, together with a reference genome, 157 high-confidence miRNA loci in lettuce were comprehensively identified, and their expression patterns were determined. Using a combination of computational prediction and high-throughput experimental verification, a set of reliable lettuce miRNA targets were obtained. Furthermore, through RNA-Seq, the expression profiles of these targets and a comprehensive view of the negative regulatory relationship between miRNAs and their targets was acquired based on a correlation analysis. To further understand miRNA functions, a miRNA regulatory network was constructed, with miRNAs at the core and combining transcription factors and miRNA target genes. This regulatory network, mainly composed of feed forward loop motifs, greatly increases understanding of the potential functions of miRNAs, and many unknown potential regulatory links were discovered. Finally, considering its specific expression pattern, Lsa-MIR408 as a hub gene was employed to illustrate the function of the regulatory network, and genetic experiments revealed its ability to increase the fresh weight and achene size of lettuce. In short, this work lays a solid foundation for the study of miRNA functions and regulatory networks in lettuce.
Collapse
Affiliation(s)
- Yang Deng
- Beijing Academy of Agriculture and Forestry Sciences, Beijing, China
- Beijing Key Laboratory of Agricultural Genetic Resources and Biotechnology, Beijing Agro-Biotechnology Research Center, Beijing, China
| | - Yajuan Qin
- Beijing Academy of Agriculture and Forestry Sciences, Beijing, China
- Beijing Key Laboratory of Agricultural Genetic Resources and Biotechnology, Beijing Agro-Biotechnology Research Center, Beijing, China
| | - Pan Yang
- Beijing Academy of Agriculture and Forestry Sciences, Beijing, China
- College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, China
- State Key Laboratory of Protein and Plant Gene Research, Peking-Tsinghua Center for Life Sciences, School of Advanced Agricultural Sciences and School of Life Sciences, Peking University, Beijing, China
| | - Jianjun Du
- Beijing Academy of Agriculture and Forestry Sciences, Beijing, China
- Beijing Key Lab of Digital Plant, Beijing Research Center for Information Technology in Agriculture, Beijing, China
| | - Zheng Kuang
- Beijing Academy of Agriculture and Forestry Sciences, Beijing, China
- State Key Laboratory of Protein and Plant Gene Research, Peking-Tsinghua Center for Life Sciences, School of Advanced Agricultural Sciences and School of Life Sciences, Peking University, Beijing, China
| | - Yongxin Zhao
- Beijing Academy of Agriculture and Forestry Sciences, Beijing, China
- Beijing Key Laboratory of Agricultural Genetic Resources and Biotechnology, Beijing Agro-Biotechnology Research Center, Beijing, China
| | - Ying Wang
- State Key Laboratory of Protein and Plant Gene Research, Peking-Tsinghua Center for Life Sciences, School of Advanced Agricultural Sciences and School of Life Sciences, Peking University, Beijing, China
| | - Dayong Li
- Beijing Academy of Agriculture and Forestry Sciences, Beijing, China
- Beijing Key Laboratory of Vegetable Germplasm Improvement, Beijing Vegetable Research Center, Beijing, China
| | - Jianhua Wei
- Beijing Academy of Agriculture and Forestry Sciences, Beijing, China
- Beijing Key Laboratory of Agricultural Genetic Resources and Biotechnology, Beijing Agro-Biotechnology Research Center, Beijing, China
| | - Xinyu Guo
- Beijing Academy of Agriculture and Forestry Sciences, Beijing, China
- Beijing Key Lab of Digital Plant, Beijing Research Center for Information Technology in Agriculture, Beijing, China
| | - Lei Li
- State Key Laboratory of Protein and Plant Gene Research, Peking-Tsinghua Center for Life Sciences, School of Advanced Agricultural Sciences and School of Life Sciences, Peking University, Beijing, China
| | - Xiaozeng Yang
- Beijing Academy of Agriculture and Forestry Sciences, Beijing, China
- Beijing Key Laboratory of Agricultural Genetic Resources and Biotechnology, Beijing Agro-Biotechnology Research Center, Beijing, China
| |
Collapse
|
6
|
Functional Genomics and Comparative Lineage-Specific Region Analyses Reveal Novel Insights into Race Divergence in Verticillium dahliae. Microbiol Spectr 2021; 9:e0111821. [PMID: 34937170 PMCID: PMC8694104 DOI: 10.1128/spectrum.01118-21] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
Abstract
Verticillium dahliae is a widespread soilborne fungus that causes Verticillium wilt on numerous economically important plant species. In tomato, until now, three races have been characterized based on the response of differential cultivars to V. dahliae, but the genetic basis of race divergence in V. dahliae remains undetermined. To investigate the genetic basis of race divergence, we sequenced the genomes of two race 2 strains and four race 3 strains for comparative analyses with two known race 1 genomes. The genetic basis of race divergence was described by the pathogenicity-related genes among the three races, orthologue analyses, and genomic structural variations. Global comparative genomics showed that chromosomal rearrangements are not the only source of race divergence and that race 3 should be split into two genotypes based on orthologue clustering. Lineage-specific regions (LSRs), frequently observed between genomes of the three races, encode several predicted secreted proteins that potentially function as suppressors of immunity triggered by known effectors. These likely contribute to the virulence of the three races. Two genes in particular that can act as markers for race 2 and race 3 (VdR2e and VdR3e, respectively) contribute to virulence on tomato, and the latter acts as an avirulence factor of race 3. We elucidated the genetic basis of race divergence through global comparative genomics and identified secreted proteins in LSRs that could potentially play critical roles in the differential virulence among the races in V. dahliae. IMPORTANCE Deciphering the gene-for-gene relationships during host-pathogen interactions is the basis of modern plant resistance breeding. In the Verticillium dahliae-tomato pathosystem, two races (races 1 and 2) and their corresponding avirulence (Avr) genes have been identified, but strains that lack these two Avr genes exist in nature. In this system, race 3 has been described, but the corresponding Avr gene has not been identified. We de novo-sequenced genomes of six strains and identified secreted proteins within the lineage-specific regions (LSRs) distributed among the genomes of the three races that could potentially function as manipulators of host immunity. One of the LSR genes, VdR3e, was confirmed as the Avr gene for race 3. The results indicate that differences in transcriptional regulation may contribute to race differentiation. This is the first study to describe these differences and elucidate roles of secreted proteins in LSRs that play roles in race differentiation.
Collapse
|
7
|
Sandoya GV, Truco MJ, Bertier LD, Subbarao KV, Simko I, Hayes RJ, Michelmore RW. Genetics of Partial Resistance Against Verticillium dahliae Race 2 in Wild and Cultivated Lettuce. PHYTOPATHOLOGY 2021; 111:842-849. [PMID: 33141646 DOI: 10.1094/phyto-09-20-0396-r] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
Lettuce (Lactuca sativa) is one of the most economically important vegetables in the United States, with approximately 50% of the domestic production concentrated in the Salinas Valley of California. Verticillium wilt, caused by races 1 and 2 of the fungal pathogen Verticillium dahliae, poses a major threat to lettuce production in this area. Although resistance governed by a single dominant gene against race 1 has previously been identified and is currently being incorporated into commercial cultivars, identification of resistance against race 2 has been challenging and no lines with complete resistance have been identified. In this study, we screened germplasm for resistance and investigated the genetics of partial resistance against race 2 using three mapping populations derived from crosses involving L. sativa × L. sativa and L. serriola × L. sativa. The inheritance of resistance in Lactuca species against race 2 is complex but a common quantitative trait locus (QTL) on linkage group 6, designated qVERT6.1 (quantitative Verticillium dahliae resistance on LG 6, first QTL), was detected in multiple populations. Additional race 2 resistance QTLs located in several linkage groups were detected in individual populations and environments. Because resistance in lettuce against race 2 is polygenic with a large genotype by environment interaction, breeding programs to incorporate these resistance genes should be aware of this complexity as they implement strategies to control race 2.
Collapse
Affiliation(s)
- Germán V Sandoya
- Genome Center and Department of Plant Sciences, University of California, Davis, CA 95616
| | - Maria José Truco
- Genome Center and Department of Plant Sciences, University of California, Davis, CA 95616
| | - Lien D Bertier
- Genome Center and Department of Plant Sciences, University of California, Davis, CA 95616
| | - Krishna V Subbarao
- Plant Pathology Department, University of California, Davis, Salinas, CA 93905
| | - Ivan Simko
- Crop Improvement and Protection Research Unit, U.S. Department of Agriculture Agricultural Research Service, Salinas, CA 93905
| | - Ryan J Hayes
- Crop Improvement and Protection Research Unit, U.S. Department of Agriculture Agricultural Research Service, Salinas, CA 93905
| | - Richard W Michelmore
- Genome Center and Department of Plant Sciences, University of California, Davis, CA 95616
| |
Collapse
|
8
|
Dung JKS. Verticillium Wilt of Mint in the United States of America. PLANTS 2020; 9:plants9111602. [PMID: 33218083 PMCID: PMC7698963 DOI: 10.3390/plants9111602] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/01/2020] [Revised: 11/09/2020] [Accepted: 11/10/2020] [Indexed: 11/18/2022]
Abstract
Verticillium wilt, caused by the fungus Verticillium dahliae, is the most important and destructive disease of mint (Mentha spp.) in the United States (U.S.). The disease was first observed in commercial mint fields in the Midwestern U.S. in the 1920s and, by the 1950s, was present in mint producing regions of the U.S. Pacific Northwest. Verticillium wilt continues to be a major limiting factor in commercial peppermint (Mentha x piperita) and Scotch spearmint (Mentha x gracilis) production, two of the most important sources of mint oil in the U.S. The perennial aspect of U.S. mint production, coupled with the soilborne, polyetic nature of V. dahliae, makes controlling Verticillium wilt in mint a challenge. Studies investigating the biology and genetics of the fungus, the molecular mechanisms of virulence and resistance, and the role of soil microbiota in modulating host-pathogen interactions are needed to improve our understanding of Verticillium wilt epidemiology and inform novel disease management strategies. This review will discuss the history and importance of Verticillium wilt in commercial U.S. mint production, as well as provide a format to highlight past and recent research advances in an effort to better understand and manage the disease.
Collapse
Affiliation(s)
- Jeremiah K S Dung
- Central Oregon Agricultural Research and Extension Center, Department of Botany and Plant Pathology, Oregon State University, Madras, OR 97741, USA
| |
Collapse
|
9
|
Chen JY, Zhang DD, Huang JQ, Wang D, Hao SJ, Li R, Puri KD, Yang L, Tong BZ, Xiong KX, Simko I, Klosterman SJ, Subbarao KV, Dai XF. Genome Sequence of Verticillium dahliae Race 1 Isolate VdLs.16 From Lettuce. MOLECULAR PLANT-MICROBE INTERACTIONS : MPMI 2020; 33:1265-1269. [PMID: 32967552 DOI: 10.1094/mpmi-04-20-0103-a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Verticillium dahliae is a widespread fungal pathogen that causes Verticillium wilt on many economically important crops and ornamentals worldwide. Populations of V. dahliae have been divided into two distinct races based upon differential host responses in tomato and lettuce. Recently, the contemporary race 2 isolates were further divided into an additional race in tomato. Herein, we provide a high-quality reference genome for the race 1 strain VdLs.16 isolated from lettuce in California, U.S.A. This resource will contribute to ongoing research that aims to elucidate the genetic basis of V. dahliae pathogenicity and population genomic diversity.
Collapse
Affiliation(s)
- Jie-Yin Chen
- Team of Crop Verticillium wilt, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Dan-Dan Zhang
- Team of Crop Verticillium wilt, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | | | - Dan Wang
- Team of Crop Verticillium wilt, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Shi-Jun Hao
- Team of Crop Verticillium wilt, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Ran Li
- Team of Crop Verticillium wilt, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Krishna D Puri
- Department of Plant Pathology, University of California, Davis, c/o U.S. Agricultural Research Station, Salinas, CA, U.S.A
| | - Lin Yang
- BGI-Shenzhen, Shenzhen, Guangdong, China
| | | | | | - Ivan Simko
- United States Department of Agriculture, Agricultural Research Service, Crop Improvement and Protection Research Unit, Salinas, CA, U.S.A
| | - Steven J Klosterman
- United States Department of Agriculture, Agricultural Research Service, Crop Improvement and Protection Research Unit, Salinas, CA, U.S.A
| | - Krishna V Subbarao
- Department of Plant Pathology, University of California, Davis, c/o U.S. Agricultural Research Station, Salinas, CA, U.S.A
| | - Xiao-Feng Dai
- Team of Crop Verticillium wilt, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| |
Collapse
|
10
|
Inderbitzin P, Christopoulou M, Lavelle D, Reyes-Chin-Wo S, Michelmore RW, Subbarao KV, Simko I. Correction to: The LsVe1L allele provides a molecular marker for resistance to Verticillium dahliae race 1 in lettuce. BMC PLANT BIOLOGY 2019; 19:374. [PMID: 31451107 PMCID: PMC6710860 DOI: 10.1186/s12870-019-1966-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Following publication of the original article [1], the author reported a processing error in Figure 5. This has been corrected in the original article.
Collapse
Affiliation(s)
- Patrik Inderbitzin
- Department of Plant Pathology, University of California, Davis, CA, 95616, USA
- Present address: Indigo Ag, Charlestown, MA, 02129, USA
| | | | - Dean Lavelle
- Genome Center, University of California, Davis, CA, 95616, USA
| | | | - Richard W Michelmore
- Genome Center, University of California, Davis, CA, 95616, USA
- Departments of Plant Sciences, Molecular & Cellular Biology, Medical Microbiology & Immunology, University of California, Davis, CA, 95616, USA
| | - Krishna V Subbarao
- Department of Plant Pathology, University of California, Davis, CA, 95616, USA.
| | - Ivan Simko
- United States Department of Agriculture, Agricultural Research Service, Crop Improvement and Protection Research Unit, Salinas, CA, 93905, USA.
| |
Collapse
|
11
|
Mamo BE, Hayes RJ, Truco MJ, Puri KD, Michelmore RW, Subbarao KV, Simko I. The genetics of resistance to lettuce drop (Sclerotinia spp.) in lettuce in a recombinant inbred line population from Reine des Glaces × Eruption. TAG. THEORETICAL AND APPLIED GENETICS. THEORETISCHE UND ANGEWANDTE GENETIK 2019; 132:2439-2460. [PMID: 31165222 DOI: 10.1007/s00122-019-03365-6] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/28/2019] [Accepted: 05/17/2019] [Indexed: 05/08/2023]
Abstract
KEY MESSAGE Two QTLs for resistance to lettuce drop, qLDR1.1 and qLDR5.1, were identified. Associated SNPs will be useful in breeding for lettuce drop and provide the foundation for future molecular analysis. Lettuce drop, caused by Sclerotinia minor and S. sclerotiorum, is an economically important disease of lettuce. The association of resistance to lettuce drop with the commercially undesirable trait of fast bolting has hindered the integration of host resistance in control of this disease. Eruption is a slow-bolting cultivar that exhibits a high level of resistance to lettuce drop. Eruption also is completely resistant to Verticillium wilt caused by race 1 of Verticillium dahliae. A recombinant inbred line population from the cross Reine des Glaces × Eruption was genotyped by sequencing and evaluated for lettuce drop and bolting in separate fields infested with either S. minor or V. dahliae. Two quantitative trait loci (QTLs) for lettuce drop resistance were consistently detected in at least two experiments, and two other QTLs were identified in another experiment; the alleles for resistance at all four QTLs originated from Eruption. A QTL for lettuce drop resistance on linkage group (LG) 5, qLDR5.1, was consistently detected in all experiments and explained 11 to 25% of phenotypic variation. On LG1, qLDR1.1 was detected in two experiments explaining 9 to 12% of the phenotypic variation. Three out of four resistance QTLs are distinct from QTLs for bolting; qLDR5.1 is pleiotropic or closely linked with a QTL for early bolting; however, the rate of bolting shows only a small effect on the variance in resistance observed at this locus. The SNP markers linked with these QTLs will be useful in breeding for resistance through marker-assisted selection.
Collapse
Affiliation(s)
- Bullo Erena Mamo
- Department of Plant Pathology, University of California, Davis, c/o U.S. Agricultural Research Station, 1636 E. Alisal St, Salinas, CA, 93905, USA
| | - Ryan J Hayes
- United States Department of Agriculture, Agricultural Research Service, Crop Improvement and Protection Research Unit, 1636 E. Alisal St, Salinas, CA, 93905, USA
- United States Department of Agriculture, Agricultural Research Service, Forage Seed and Cereal Research Unit, 3450 SW Campus Way, Corvallis, OR, 97321, USA
| | | | - Krishna D Puri
- Department of Plant Pathology, University of California, Davis, c/o U.S. Agricultural Research Station, 1636 E. Alisal St, Salinas, CA, 93905, USA
| | - Richard W Michelmore
- UC Davis Genome Center, Davis, CA, 95616, USA
- Departments of Plant Sciences, Molecular and Cellular Biology, Medical Microbiology and Immunology, University of California, Davis, Davis, CA, 95616, USA
| | - Krishna V Subbarao
- Department of Plant Pathology, University of California, Davis, c/o U.S. Agricultural Research Station, 1636 E. Alisal St, Salinas, CA, 93905, USA
| | - Ivan Simko
- United States Department of Agriculture, Agricultural Research Service, Crop Improvement and Protection Research Unit, 1636 E. Alisal St, Salinas, CA, 93905, USA.
| |
Collapse
|