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Guo H, Jing L, Xia C, Zhu Y, Xie Y, Ma X, Fang J, Wang Z, Zuo Z. Copper Promotes LPS-Induced Inflammation via the NF-кB Pathway in Bovine Macrophages. Biol Trace Elem Res 2024:10.1007/s12011-024-04107-6. [PMID: 38376728 DOI: 10.1007/s12011-024-04107-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/21/2023] [Accepted: 02/13/2024] [Indexed: 02/21/2024]
Abstract
Inflammation is a complex physiological process that enables the clearance of pathogens and repairing damaged tissues. Elevated serum copper concentration has been reported in cases of inflammation, but the role of copper in inflammatory responses remains unclear. This study used bovine macrophages to establish lipopolysaccharide (LPS)-induced inflammation model. There were five groups in the study: a group treated with LPS (100 ng/ml), a group treated with either copper chelator (tetrathiomolybdate, TTM) (20 μmol) or CuSO4 (25 μmol or 50 μmol) after LPS stimulation, and a control group. Copper concentrations increased in macrophages after the LPS treatment. TTM decreased mRNA expression of pro-inflammatory factors (IL-1β, TNF-α, IL-6, iNOS, and COX-2), whereas copper supplement increased them. Compared to the control group, TLP4 and MyD88 protein levels were increased in the TTM and copper groups. However, TTM treatment decreased p-p65 and increased IкB-α while the copper supplement showed reversed results. In addition, the phagocytosis and migration of bovine macrophages decreased in the TTM treatment group while increased in the copper treatment groups. Results mentioned above indicated that copper could promote the LPS-induced inflammatory response in bovine macrophages, promote pro-inflammatory factors by activating the NF-кB pathway, and increase phagocytosis capacity and migration. Our study provides a possible targeted therapy for bovine inflammation.
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Affiliation(s)
- Hongrui Guo
- College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, Sichuan, 611130, People's Republic of China.
- Key Laboratory of Animal Diseases and Environmental Hazards of Sichuan Province, Sichuan Agriculture University, Wenjiang, Chengdu, 611130, People's Republic of China.
| | - Lin Jing
- College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, Sichuan, 611130, People's Republic of China
| | - Chenglong Xia
- College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, Sichuan, 611130, People's Republic of China
| | - Yanqiu Zhu
- College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, Sichuan, 611130, People's Republic of China
- Key Laboratory of Animal Diseases and Environmental Hazards of Sichuan Province, Sichuan Agriculture University, Wenjiang, Chengdu, 611130, People's Republic of China
| | - Yue Xie
- College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, Sichuan, 611130, People's Republic of China
| | - Xiaoping Ma
- College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, Sichuan, 611130, People's Republic of China
| | - Jing Fang
- College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, Sichuan, 611130, People's Republic of China
- Key Laboratory of Animal Diseases and Environmental Hazards of Sichuan Province, Sichuan Agriculture University, Wenjiang, Chengdu, 611130, People's Republic of China
| | - Zhisheng Wang
- Institute of Animal Nutrition, Sichuan Agricultural University, Chengdu, 611134, China
| | - Zhicai Zuo
- College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, Sichuan, 611130, People's Republic of China.
- Key Laboratory of Animal Diseases and Environmental Hazards of Sichuan Province, Sichuan Agriculture University, Wenjiang, Chengdu, 611130, People's Republic of China.
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Mouse tissue glycome atlas 2022 highlights inter-organ variation in major N-glycan profiles. Sci Rep 2022; 12:17804. [PMID: 36280747 PMCID: PMC9592591 DOI: 10.1038/s41598-022-21758-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2022] [Accepted: 09/30/2022] [Indexed: 01/19/2023] Open
Abstract
This study presents "mouse tissue glycome atlas" representing the profiles of major N-glycans of mouse glycoproteins that may define their essential functions in the surface glycocalyx of mouse organs/tissues and serum-derived extracellular vesicles (exosomes). Cell surface glycocalyx composed of a variety of N-glycans attached covalently to the membrane proteins, notably characteristic "N-glycosylation patterns" of the glycocalyx, plays a critical role for the regulation of cell differentiation, cell adhesion, homeostatic immune response, and biodistribution of secreted exosomes. Given that the integrity of cell surface glycocalyx correlates significantly with maintenance of the cellular morphology and homeostatic immune functions, dynamic alterations of N-glycosylation patterns in the normal glycocalyx caused by cellular abnormalities may serve as highly sensitive and promising biomarkers. Although it is believed that inter-organs variations in N-glycosylation patterns exist, information of the glycan diversity in mouse organs/tissues remains to be elusive. Here we communicate for the first-time N-glycosylation patterns of 16 mouse organs/tissues, serum, and serum-derived exosomes of Slc:ddY mice using an established solid-phase glycoblotting platform for the rapid, easy, and high throughput MALDI-TOFMS-based quantitative glycomics. The present results elicited occurrence of the organ/tissue-characteristic N-glycosylation patterns that can be discriminated to each other. Basic machine learning analysis using this N-glycome dataset enabled classification between 16 mouse organs/tissues with the highest F1 score (69.7-100%) when neural network algorithm was used. A preliminary examination demonstrated that machine learning analysis of mouse lung N-glycome dataset by random forest algorithm allows for the discrimination of lungs among the different mouse strains such as the outbred mouse Slc:ddY, inbred mouse DBA/2Crslc, and systemic lupus erythematosus model mouse MRL-lpr/lpr with the highest F1 score (74.5-83.8%). Our results strongly implicate importance of "human organ/tissue glycome atlas" for understanding the crucial and diversified roles of glycocalyx determined by the organ/tissue-characteristic N-glycosylation patterns and the discovery research for N-glycome-based disease-specific biomarkers and therapeutic targets.
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Tan Q, Wang Y, Zhang G, Lu B, Wang T, Tao T, Wang H, Jiang H, Chen W. The metabolic effects of multi-trace elements on parenteral nutrition for critically ill pediatric patients: a randomized controlled trial and metabolomic research. Transl Pediatr 2021; 10:2579-2593. [PMID: 34765482 PMCID: PMC8578764 DOI: 10.21037/tp-21-456] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/26/2021] [Accepted: 10/20/2021] [Indexed: 11/26/2022] Open
Abstract
BACKGROUND We investigated the efficacy and metabolic dose-effect of multi-trace element injection I [MTEI-(I)] for severe pediatric patients via a parallel, randomized control study. METHODS The inclusion criteria were as follows: (I) patients who required parenteral nutrition (PN) due to various diseases, and were expected to receive PN for >5 days; (II) patients aged <18 years; (III) patients with no serious cardiac, hepatic, renal, or pulmonary dysfunction; and (IV) patients with an established central venous pathway. Enrolled patients were randomly assigned into two groups using sequentially numbered, sealed, opaque envelopes: Group A (low-dose group) received MTEI-(I) at 1 mL/kg/d, and Group B (high-dose group) received MTEI-(I) at 2 mL/kg/d, up to a maximum dose of 15 mL/d. The concentrations of manganese (Mn), copper (Cu), zinc (Zn), and selenium (Se) were detected. The following indexes were measured after 5 days of treatment (T5): β-oxidation of very-long-chain fatty acids, arginine and proline metabolism, pentose phosphate metabolism, ketone body metabolism, citric acid cycle, purine metabolism, caffeine metabolism, and pyruvate metabolism. The participants, care givers, and data analysis staff were blinded to the group assignment. RESULTS Overall, at T5, Mn and Cu levels were decreased, while Zn and Se levels were increased. The increase of Zn levels (A: 0.170±0.479 vs. B: 0.193±0.900) and decrease of Cu levels (A: -0.240±0.382 vs. B: -0.373±0.465) of patients in Group B (n=22) were significantly higher than those in Group A (n=18). At T5, the β-oxidation of very-long-chain fatty acids, arginine and proline metabolism, pentose phosphate metabolism, ketone body metabolism, citric acid cycle, purine metabolism, caffeine metabolism, and pyruvate metabolism were variably decreased (P<0.05) in Group B compared to Group A. CONCLUSIONS Our results suggested that the high-dose administration of MTEI-(I) is safe for severe pediatric patients, and may alleviate inflammation and antioxidation, relieve hyperactivity caused by stress, and improve tissues-based hypoxia and renal function. TRIAL REGISTRATION Chinese Clinical Trial Registry ChiCTR2100052198.
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Affiliation(s)
- Qingti Tan
- Pediatric Intensive Care Unit, Chengdu Women's and Children's Central Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu, China
| | - Yu Wang
- Institute for Emergency and Disaster Medicine, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, China.,Institute for Emergency and Disaster Medicine, Chinese Academy of Science Sichuan Translational Medicine Research Hospital, Chengdu, China
| | - Guoying Zhang
- Pediatric Intensive Care Unit, Chengdu Women's and Children's Central Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu, China
| | - Bin Lu
- Pediatric Intensive Care Unit, Chengdu Women's and Children's Central Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu, China
| | - Tao Wang
- Pediatric Intensive Care Unit, Chengdu Women's and Children's Central Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu, China
| | - Tao Tao
- Pediatric Intensive Care Unit, Chengdu Women's and Children's Central Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu, China
| | - He Wang
- School of Pharmacy, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Hua Jiang
- Institute for Emergency and Disaster Medicine, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, China.,Institute for Emergency and Disaster Medicine, Chinese Academy of Science Sichuan Translational Medicine Research Hospital, Chengdu, China
| | - Wei Chen
- Department of Clinical Nutrition, Department of Health Medicine, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
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Abstract
Stenotrophomonas maltophilia is an opportunistic pathogen of significant concern to susceptible patient populations. This pathogen can cause nosocomial and community-acquired respiratory and bloodstream infections and various other infections in humans. Sources include water, plant rhizospheres, animals, and foods. Studies of the genetic heterogeneity of S. maltophilia strains have identified several new genogroups and suggested adaptation of this pathogen to its habitats. The mechanisms used by S. maltophilia during pathogenesis continue to be uncovered and explored. S. maltophilia virulence factors include use of motility, biofilm formation, iron acquisition mechanisms, outer membrane components, protein secretion systems, extracellular enzymes, and antimicrobial resistance mechanisms. S. maltophilia is intrinsically drug resistant to an array of different antibiotics and uses a broad arsenal to protect itself against antimicrobials. Surveillance studies have recorded increases in drug resistance for S. maltophilia, prompting new strategies to be developed against this opportunist. The interactions of this environmental bacterium with other microorganisms are being elucidated. S. maltophilia and its products have applications in biotechnology, including agriculture, biocontrol, and bioremediation.
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Cooperativity between Stenotrophomonas maltophilia and Pseudomonas aeruginosa during Polymicrobial Airway Infections. Infect Immun 2020; 88:IAI.00855-19. [PMID: 31932329 DOI: 10.1128/iai.00855-19] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2019] [Accepted: 12/23/2019] [Indexed: 11/20/2022] Open
Abstract
Stenotrophomonas maltophilia is a Gram-negative bacterium found ubiquitously in the environment that has historically been regarded as nonpathogenic. S. maltophilia is increasingly observed in patient sputa in cystic fibrosis (CF), and while existing epidemiology indicates that patients with S. maltophilia have poorer diagnoses, its clinical significance remains unclear. Moreover, as multidrug resistance is common among S. maltophilia isolates, treatment options for these infections may be limited. Here, we investigated the pathogenicity of S. maltophilia alone and during polymicrobial infection with Pseudomonas aeruginosa Colonization, persistence, and virulence of S. maltophilia were assessed in experimental respiratory infections of mice. The results of this study indicate that S. maltophilia transiently colonizes the lung accompanied by significant weight loss and immune cell infiltration and the expression of early inflammatory markers, including interleukin 6 (IL-6), IL-1α, and tumor necrosis factor alpha (TNF-α). Importantly, polymicrobial infection with P. aeruginosa elicited significantly higher S. maltophilia counts in bronchoalveolar lavages and lung tissue homogenates. This increase in bacterial load was directly correlated with the density of the P. aeruginosa population and required viable P. aeruginosa bacteria. Microscopic analysis of biofilms formed in vitro revealed that S. maltophilia formed well-integrated biofilms with P. aeruginosa, and these organisms colocalize in the lung during dual-species infection. Based on these results, we conclude that active cellular processes by P. aeruginosa afford a significant benefit to S. maltophilia during polymicrobial infections. Furthermore, these results indicate that S. maltophilia may have clinical significance in respiratory infections.
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Gajdács M, Urbán E. Prevalence and Antibiotic Resistance of Stenotrophomonas maltophilia in Respiratory Tract Samples: A 10-Year Epidemiological Snapshot. Health Serv Res Manag Epidemiol 2019; 6:2333392819870774. [PMID: 31453265 PMCID: PMC6698998 DOI: 10.1177/2333392819870774] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2019] [Revised: 07/30/2019] [Accepted: 07/30/2019] [Indexed: 12/13/2022] Open
Abstract
Background: Since the 1980s, Stenotrophomonas maltophilia has emerged as an
important pathogen associated with significant mortality in pneumonia and bacteremia of
severely immunocompromised, hospitalized patients. The drug of choice in S
maltophilia infections is sulfamethoxazole-trimethoprim (SMX/TMP); SMX/TMP
resistance is a serious concern in clinical practice. The aim of this study was to
assess the prevalence of S maltophilia in lower respiratory tract
(LRTI) samples at a tertiary-care university hospital. Methods: This retrospective cohort study was carried out using microbiological data collected
between January 2008 and December 2017. Routine antimicrobial susceptibility testing was
performed for SMX/TMP and levofloxacin; in case of resistance, susceptibility testing
for additional antibiotics (tigecycline, amikacin, and colistin) was also performed. Results: A total of 579 individual S maltophilia isolates were identified
(2008-2012: n = 160, 2013-2017: n = 419; P = .0008). In all, 78.46% of
patients were younger than 5 or older than 50 years of age and had recent trauma,
surgery, or underlying conditions (malignancies, respiratory distress syndrome,
congenital disorders, and cystic fibrosis). In 28.16% of samples, more than 1 pathogen
was identified, and 5.35% of coisolated pathogens were multidrug resistant (MDR). In
all, 12.1% of isolates were SMX/TMP-resistant (2008-2012: 6.12%, 2013-2017: 18.06%;
P = .034), while 8.99% were resistant to levofloxacin (2008-2012:
7.86%, 2013-2017: 10.12%; P > .05). SMX/TMP resistance was detected
more frequently in samples originating from inpatients (n = 2.50 ± 2.39 vs n = 11.50 ±
3.76; P = .0002). Conclusions: In all, 5.87% of isolates were extensively drug resistant (XDR), that is, in addition
to SMX/TMP, they were resistant to levofloxacin, amikacin, colistin, and tigecycline.
The results of our study correspond to the findings in the literature.
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Affiliation(s)
- Márió Gajdács
- Faculty of Pharmacy, Department of Pharmacodynamics and Biopharmacy, University of Szeged, Szeged, Hungary.,Faculty of Medicine, Institute of Clinical Microbiology, University of Szeged, Szeged, Hungary
| | - Edit Urbán
- Faculty of Medicine, Department of Public Health, University of Szeged, Szeged, Hungary
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Jair HW, Lu HF, Huang YW, Pan SY, Lin IL, Huang HH, Yang TC. Roles of the Two-MnSOD System of Stenotrophomonas maltophilia in the Alleviation of Superoxide Stress. Int J Mol Sci 2019; 20:ijms20071770. [PMID: 30974814 PMCID: PMC6479884 DOI: 10.3390/ijms20071770] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2019] [Revised: 03/28/2019] [Accepted: 04/09/2019] [Indexed: 01/04/2023] Open
Abstract
Manganese-dependent superoxide dismutase (MnSOD, SodA) and iron-dependent SOD (FeSOD, SodB) are critical cytosolic enzymes for alleviating superoxide stress. Distinct from the singular sodA gene in most bacteria, Stenotrophomonas maltophilia harbors two sodA genes, sodA1 and sodA2. The roles of SodA1, SodA2, and SodB of S. maltophilia in alleviating superoxide stress were investigated. The expression of sod genes was determined by promoter–xylE transcriptional fusion assay and qRT–PCR. SodA2 and sodB expressions were proportional to the bacterial logarithmic growth, but unaffected by menadione (MD), iron, or manganese challenges. SodA1 was intrinsically unexpressed and inducibly expressed by MD. Complementary expression of sodA1 was observed when sodA2 was inactivated. The individual or combined sod deletion mutants were constructed using the gene replacement strategy. The functions of SODs were assessed by evaluating cell viabilities of different sod mutants in MD, low iron-stressed, and/or low manganese-stressed conditions. Inactivation of SodA1 or SodA2 alone did not affect bacterial viability; however, simultaneously inactivating sodA1 and sodA2 significantly compromised bacterial viability in both aerobic growth and stressed conditions. SodA1 can either rescue or support SodA2 when SodA2 is defective or insufficiently potent. The presence of two MnSODs gives S. maltophilia an advantage against superoxide stress.
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Affiliation(s)
- Herng-Woei Jair
- Department of Clinical Pathology, Cheng Hsin General Hospital, Taipei 11220; Taiwan.
| | - Hsu-Feng Lu
- Department of Clinical Pathology, Cheng Hsin General Hospital, Taipei 11220; Taiwan.
- Department of Restaurant, Hotel and Institutional Management, 24205, Fu-Jen Catholic University, New Taipei City 24205, Taiwan.
| | - Yi-Wei Huang
- Department of Biotechnology and Laboratory Science in Medicine, 11221, National Yang-Ming University, Taipei 11221, Taiwan.
| | - Sz-Yun Pan
- Department of Biotechnology and Laboratory Science in Medicine, 11221, National Yang-Ming University, Taipei 11221, Taiwan.
| | - I-Ling Lin
- Department of Biotechnology and Laboratory Science in Medicine, 11221, National Yang-Ming University, Taipei 11221, Taiwan.
| | - Hsin-Hui Huang
- Department of Biotechnology and Laboratory Science in Medicine, 11221, National Yang-Ming University, Taipei 11221, Taiwan.
| | - Tsuey-Ching Yang
- Department of Biotechnology and Laboratory Science in Medicine, 11221, National Yang-Ming University, Taipei 11221, Taiwan.
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Juttukonda LJ, Skaar EP. Manganese homeostasis and utilization in pathogenic bacteria. Mol Microbiol 2015; 97:216-28. [PMID: 25898914 DOI: 10.1111/mmi.13034] [Citation(s) in RCA: 80] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/16/2015] [Indexed: 01/08/2023]
Abstract
Manganese (Mn) is a required cofactor for all forms of life. Given the importance of Mn to bacteria, the host has devised strategies to sequester Mn from invaders. In the macrophage phagosome, NRAMP1 removes Mn and other essential metals to starve intracellular pathogens; in the extracellular space, calprotectin chelates Mn and Zn. Calprotectin-mediated Mn sequestration is a newly appreciated host defense mechanism, and recent findings are highlighted herein. In order to acquire Mn when extracellular concentrations are low, bacteria have evolved efficient Mn acquisition systems that are under elegant transcriptional control. To counteract Mn overload, some bacteria possess Mn-specific export systems that are important in vivo, presumably for control of intracellular Mn levels. Mn transporters, their transcriptional regulators and some Mn-requiring enzymes are necessary for virulence of certain bacterial pathogens, as revealed by animal models of infection. Furthermore, Mn is an important facet of the cellular response to oxidative stress, a host antibacterial strategy. The battle for Mn between host and pathogen is now appreciated to be a major determinant of the outcome of infection. In this MicroReview, the contribution of Mn to the host-pathogen interaction is reviewed, and key questions are proposed for future study.
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Affiliation(s)
- Lillian J Juttukonda
- Department of Pathology, Microbiology, and Immunology, Vanderbilt University School of Medicine, Nashville, TN, 37232, USA
| | - Eric P Skaar
- Department of Pathology, Microbiology, and Immunology, Vanderbilt University School of Medicine, Nashville, TN, 37232, USA
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Navarrete F, De La Fuente L. Zinc Detoxification Is Required for Full Virulence and Modification of the Host Leaf Ionome by Xylella fastidiosa. MOLECULAR PLANT-MICROBE INTERACTIONS : MPMI 2015; 28:497-507. [PMID: 25561271 DOI: 10.1094/mpmi-07-14-0221-r] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Zinc (Zn) is an essential element for all forms of life because it is a structural or catalytic cofactor of many proteins, but it can have toxic effects at high concentrations; thus, microorganisms must tightly regulate its levels. Here, we evaluated the role of Zn homeostasis proteins in the virulence of the xylem-limited bacterium Xylella fastidiosa, causal agent of Pierce's disease of grapevine, among other diseases. Two mutants of X. fastidiosa 'Temecula' affected in genes which regulate Zn homeostasis (zur) and Zn detoxification (czcD) were constructed. Both knockouts showed increased sensitivity to Zn at physiologically relevant concentrations and increased intracellular accumulation of this metal compared with the wild type. Increased Zn sensitivity was correlated with decreased growth in grapevine xylem sap, reduced twitching motility, and downregulation of exopolysaccharide biosynthetic genes. Tobacco plants inoculated with either knockout mutant showed reduced foliar symptoms and a much reduced (czcD) or absent (zur) modification of the leaf ionome (i.e., the mineral nutrient and trace element composition), as well as reduced bacterial populations. The results show that detoxification of Zn is crucial for the virulence of X. fastidiosa and verifies our previous findings that modification of the host leaf ionome correlates with bacterial virulence.
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Affiliation(s)
- Fernando Navarrete
- Department of Entomology and Plant Pathology, Auburn University, Auburn, AL 36849, U.S.A
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