Plant Health Progress最新文献_第2页

Sampling for the Early Detection of Peronospora sparsa in Blackberry Nursery Stock Plants 黑莓苗木中褐孢菌早期检测的抽样研究

Plant Health Progress Pub Date : 2023-10-04 DOI: 10.1094/php-05-23-0053-sc

Melanie Lewis Ivey, Alejandra Maria Jimenez Madrid

{"title":"Sampling for the Early Detection of Peronospora sparsa in Blackberry Nursery Stock Plants","authors":"Melanie Lewis Ivey, Alejandra Maria Jimenez Madrid","doi":"10.1094/php-05-23-0053-sc","DOIUrl":"https://doi.org/10.1094/php-05-23-0053-sc","url":null,"abstract":"Downy mildew, caused by Peronospora sparsa, is a systemic disease of blackberry that can cause significant production losses worldwide. P. sparsa in disseminated through asymptomatic infected blackberry plants. Currently there is no clean plant certification program for blackberry downy mildew. The objective of this research was to determine the detection frequency of P. sparsa in blackberry roots, stems, and leaves for the development of sampling guidelines for asymptomatic nursery plants. Stems, emerging leaves, and fully expanded leaves collected from commercial ‘Natchez’, ‘Ouachita’ and ‘Caddo’ nursery stock were tested by nested PCR using published primers at early bud sprouting, vegetative, and flowering to green berry phenological stages for the presence of P. sparsa. Initially, 90%, 40%, and 100% of Caddo, Natchez, and Ouachita, respectively, tested positive for P. sparsa. Detection of P. sparsa was inconsistent across cultivar, tissue type, plant, and phenological stage. Except for Natchez plants, P. sparsa was detected most frequently in leaves at all three phenological stages. Overall, detection of P. sparsa in Natchez was low with the highest frequency of detection occurring at the vegetative stage. For Caddo and Ouachita, newly emerging leaves at the bud sprouting stage yielded a slightly higher frequency of detection than fully expanded leaves. The detection frequency in stem or root tissue ranged from 0-50% depending on the cultivar and phenological stage. In this study we demonstrated that sampling newly emerging leaves at early bud break will result in an 80-90% detection frequency in cultivars that are susceptible to P. sparsa.","PeriodicalId":20251,"journal":{"name":"Plant Health Progress","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135646126","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Pathotype-characterization of Fusarium oxysporum f. sp. lentis (Fol) Isolates in North America 北美尖孢镰刀菌(Fusarium oxysporum f. sp. lentis, Fol)分离株的病原型特征

Plant Health Progress Pub Date : 2023-10-04 DOI: 10.1094/php-06-23-0055-rs

Collins Bugingo, Monica Brelsford, Kevin McPhee, Mary Burrows

引用次数: 0

The Potassium Phosphite-Based Fungicide Canon^® Controls Basil Downy Mildew Under Greenhouse Conditions in Israel 以磷酸钾为基础的杀菌剂佳能®控制以色列温室条件下的罗勒霜霉病

Plant Health Progress Pub Date : 2023-10-02 DOI: 10.1094/php-07-23-0062-rs

Nadav Nitzan, Hezi Goren

{"title":"The Potassium Phosphite-Based Fungicide Canon® Controls Basil Downy Mildew Under Greenhouse Conditions in Israel","authors":"Nadav Nitzan, Hezi Goren","doi":"10.1094/php-07-23-0062-rs","DOIUrl":"https://doi.org/10.1094/php-07-23-0062-rs","url":null,"abstract":"Sweet basil downy mildew (BDM), caused by Peronospora belbahrii is the most destructive disease of commercially produced sweet basil in Israel and unless properly managed, may lead to 100% yield reduction. Four experiments were conducted over three growing seasons (fall 2021, fall 2022 and spring 2023) under commercial-like conditions to determine the efficacy of the phosphonic acid-based fungicide Canon ® following a conservative, seven-day protective spraying protocol. While Canon did not eradicate the pathogen, treated plants had 41 to 99.9% less (P<0.05) disease incidence and / or severity than the untreated control plants. The disease scores on plants treated with Canon were similar (P>0.05) to an alternation of Revus ® / Cabrio ® in fall 2021; less (P<0.05) than Revus in fall 2022 and higher (P<0.05) than an alternation of Acrobat ® / Cabrio at the end of the spring 2023 experiment. The inhibitory effect of Canon, its short pre-harvest application interval and low cost compared to other fungicides make it an excellent addition and a potential replacement for controlling BDM under greenhouse conditions that should be further explored.","PeriodicalId":20251,"journal":{"name":"Plant Health Progress","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135830344","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Recovery Plan for Ralstonia solanacearum Race 3 Biovar 2 (Phylotype IIB, sequevars 1 and 2) Causing Brown Rot of Potato, Bacterial Wilt of Tomato, and Southern Wilt of Geranium 马铃薯褐腐病、番茄细菌性枯萎病和天竺葵南方枯萎病3号生物变种2(种型IIB，续系1和2)的恢复计划

Plant Health Progress Pub Date : 2023-09-27 DOI: 10.1094/php-03-23-0027-rp

Ellen R. Dickstein, Ana Maria Bocsanczy, Patrice Champoiseau, Jeff Jones, David Norman, Mathews Paret, Anuj Sharma, Timur M. Momol, Caitilyn Allen, Qi Huang, Sally Miller, Sylvia Shadman-Adolpho, Lynn Evans-Goldner, Zhaowei Liu, Russ Bulluck, Kitty Frances Cardwell, Julius E. Fajardo

{"title":"Recovery Plan for Ralstonia solanacearum Race 3 Biovar 2 (Phylotype IIB, sequevars 1 and 2) Causing Brown Rot of Potato, Bacterial Wilt of Tomato, and Southern Wilt of Geranium","authors":"Ellen R. Dickstein, Ana Maria Bocsanczy, Patrice Champoiseau, Jeff Jones, David Norman, Mathews Paret, Anuj Sharma, Timur M. Momol, Caitilyn Allen, Qi Huang, Sally Miller, Sylvia Shadman-Adolpho, Lynn Evans-Goldner, Zhaowei Liu, Russ Bulluck, Kitty Frances Cardwell, Julius E. Fajardo","doi":"10.1094/php-03-23-0027-rp","DOIUrl":"https://doi.org/10.1094/php-03-23-0027-rp","url":null,"abstract":"This recovery plan is one of several disease-specific documents produced as part of the National Plant Disease Recovery System (NPDRS) called for in Homeland Security Presidential Directive Number 9 (HSPD-9). The purpose of the NPDRS is to ensure that the tools, infrastructure, communication networks, and capacity required to mitigate the impact of high consequence plant disease outbreaks are such that a reasonable level of crop production is maintained. Each disease-specific plan is intended to provide a brief primer on the disease, assess the status of critical recovery components, and identify disease management research, extension, and education needs. These documents are not intended to be stand-alone documents that address the many and varied aspects of plant disease outbreaks, the multitude of decisions that must be made, and actions taken to achieve effective response and recovery. They are, however, documents that will help the United States Department of Agriculture (USDA) guide further efforts directed toward plant disease recovery.","PeriodicalId":20251,"journal":{"name":"Plant Health Progress","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135579124","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Comparing Inoculation Methods of Clavibacter nebraskensis on Corn (Zea mays) Under Greenhouse Conditions 温室条件下玉米内布拉斯卡杆菌接种方法比较

Plant Health Progress Pub Date : 2023-09-24 DOI: 10.1094/php-04-23-0038-rs

Nathan Haugrud, LeAnn Lux, Andrew Friskop, Joseph Ikley

{"title":"Comparing Inoculation Methods of Clavibacter nebraskensis on Corn (Zea mays) Under Greenhouse Conditions","authors":"Nathan Haugrud, LeAnn Lux, Andrew Friskop, Joseph Ikley","doi":"10.1094/php-04-23-0038-rs","DOIUrl":"https://doi.org/10.1094/php-04-23-0038-rs","url":null,"abstract":"Goss’s bacterial wilt and leaf blight of corn (Zea mays L.), caused by Clavibacter nebraskensis, is one of the top yield-reducing corn diseases in the Northern Great Plains. The use of efficient and repeatable inoculation methods in the greenhouse are needed to further understand disease development and host resistance. Although several inoculation methods have been reported, a direct comparison among them in the greenhouse has not been conducted. A greenhouse study was conducted to compare established methods for time to inoculate, disease incidence, and lesion development. Methods evaluated included creating wounds with scissors, pin-prick tools, sandpaper, or carborundum, or introducing bacteria by spraying, immersion, sponge, or syringe. Removing leaf tips with scissors and dipping newly injured leaf in bacterial suspension resulted in the fastest inoculation time (24 seconds), highest disease incidence (>80%), and fastest lesion development among methods tested. Most other methods had similar disease development, but varied on their success rate (incidence). These results can aid researchers on selecting inoculation methods to address research objectives on Goss’s wilt in the greenhouse.","PeriodicalId":20251,"journal":{"name":"Plant Health Progress","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135925742","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Assessing foliar fungicides for soybean disease management and yield in Indiana 评价叶面杀菌剂对印第安纳州大豆病害管理和产量的影响

Plant Health Progress Pub Date : 2023-09-24 DOI: 10.1094/php-05-23-0046-rs

Mariama T. Brown, Su Shim, Camila Rocco Da Silva, Kaitlin G. Waibel, Darcy E. P. Telenko

{"title":"Assessing foliar fungicides for soybean disease management and yield in Indiana","authors":"Mariama T. Brown, Su Shim, Camila Rocco Da Silva, Kaitlin G. Waibel, Darcy E. P. Telenko","doi":"10.1094/php-05-23-0046-rs","DOIUrl":"https://doi.org/10.1094/php-05-23-0046-rs","url":null,"abstract":"Foliar diseases can significantly impact soybean in Indiana and fungicides can be an effective management tool to protect yield against disease. Fourteen foliar fungicide products were evaluated for efficacy on soybean foliar diseases and yield in ten field trials from 2019 to 2021 in Indiana. Fungicides were applied at their recommended rates in a single application at the beginning pod (R3) growth stage. Cercospora leaf blight (Cercospora spp.), brown spot (Septoria glycines Hemmi), and frogeye leaf spot (Cercospora sojina Hara) were the most prominent foliar diseases observed in the trials. Under low to moderate Cercospora leaf blight disease pressure, there were no significant differences between foliar fungicides and the nontreated control averaged across all site-years. In contrast, all foliar fungicides significantly suppressed brown spot from 69 to 92% relative to the nontreated control. Only bixafen + flutriafol and azoxystrobin + pydiflumetofen + propiconazole significantly suppressed frogeye leaf spot severity over the nontreated control. Foliar fungicide applications did not significantly increase yield over the nontreated control across all site-years. Therefore, under low to moderate foliar disease risk, fungicide applications may not be warranted in Indiana. Growers should continue to scout soybean fields prior to the beginning pod (R3) growth stage, then make an informed, sustainable decision to use a fungicide for disease management.","PeriodicalId":20251,"journal":{"name":"Plant Health Progress","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135926289","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Aggressiveness of Xanthomonas translucens pv. undulosa Isolates and Differential Reaction Among Spring Wheat Varieties Under Controlled Environment 半透明黄单胞菌的侵袭性。控制环境下春小麦品种间undulosa分离株及差异反应

Plant Health Progress Pub Date : 2023-09-14 DOI: 10.1094/php-03-23-0020-rs

Abraham Hangamaisho, Bruce H. Bleakley, Shaukat Ali, Dalitso Yabwalo, Emmanuel Z. Byamukama

{"title":"Aggressiveness of Xanthomonas translucens pv. undulosa Isolates and Differential Reaction Among Spring Wheat Varieties Under Controlled Environment","authors":"Abraham Hangamaisho, Bruce H. Bleakley, Shaukat Ali, Dalitso Yabwalo, Emmanuel Z. Byamukama","doi":"10.1094/php-03-23-0020-rs","DOIUrl":"https://doi.org/10.1094/php-03-23-0020-rs","url":null,"abstract":"Xanthomonas translucens pv. undulosa (Xtu) causes bacterial leaf streak (BLS) in wheat that can lead up to 40% losses globally. Understanding the aggressiveness of isolates from different locations in a state may help in screening for BLS resistance in wheat breeding programs for that area. A greenhouse study to determine the aggressiveness of 17 isolates collected from South Dakota on spring wheat cv. ‘SY-Rockford’; and differential reaction of 21 spring wheat varieties grown in South Dakota to BLS under greenhouse conditions was conducted in 2021 and 2022. To assess BLS severity, one randomly selected plant per pot was rated based on the percentage of leaf area with BLS symptoms. Significant differences among the bacterial isolates were observed, with Xtpvu21OC (23.33%) as the most aggressive in causing BLS in SY-Rockford. Spring wheat varieties ‘MN Washburn’ (25.0%) and ‘ND Frohberg’ (22.5%) were found to be the most susceptible to BLS. It is suggested that the most aggressive Xanthomonas translucens pv. undulosa isolate available to researchers in their region be used in screening varieties and lines for BLS resistance.","PeriodicalId":20251,"journal":{"name":"Plant Health Progress","volume":"58 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134970556","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

First Detection of Cucurbit yellow stunting disorder virus in Iraq 伊拉克首次发现瓜黄色发育障碍病毒

Plant Health Progress Pub Date : 2023-09-12 DOI: 10.1094/php-09-23-0076-br

Mohammed S. Mohammed, Adnan Lahuf, Zuhair M. A. Jeddoa, Duraid Al-Taey

{"title":"First Detection of Cucurbit yellow stunting disorder virus in Iraq","authors":"Mohammed S. Mohammed, Adnan Lahuf, Zuhair M. A. Jeddoa, Duraid Al-Taey","doi":"10.1094/php-09-23-0076-br","DOIUrl":"https://doi.org/10.1094/php-09-23-0076-br","url":null,"abstract":"During the growing season of 2022, courgette plants displaying foliar yellowing that include leaves mottle and interveinal chlorosis along with green veins were observed in numerous courgette fields of Al-Yusufiyah, Baghdad Province, Iraq. Bemisia tabaci was abundant with the foliar yellowing plants in all fields investigated. Fifty symptomatic leaf samples showing typical foliar yellowing were collected randomly from several courgette fields. Three representative samples were sent to Macrogen Inc. (Seoul, South Korea) for high-throughput RNA sequencing. The BLASTn analyses of the assembled genome of Cucurbit yellow stunting disorder virus isolate Iraq-1 segment RNA1 and RNA2 demonstrated pairwise nucleotide identity between 99.23 to 99.84% for segment RNA1 and between 97.58 to 97.92% for segment RNA2 with several corresponding global isolates of CYSDV. Thus, these two segments of the CYSDV isolate Iraq-1 were deposited in GenBank under accession numbers OQ685958.1 and OQ685959.1, respectively. Additionally, the phylogenetic analysis indicated a relationship among CYSDV isolate Iraq-1 and numerous isolates of CYSDV reported from various origins, mainly those from the USA (MW147553.1 and EF547827.1) and Spain (AJ537493.1 and NC_004809) for the segment RNA1. However, the segment RNA2 of CYSDV isolate Iraq-1 was close to those from Spain (NC_004810.1, AY242078.1, and AJ439690.2), Greece (OL584360.1), and the USA (FJ492808.1). Although the CYSDV was previously reported in Europe, such as in Spain and France, Asia in Iran and Jordan, and North America in the United States and Mexico, it has not been reported in Iraq. Thus. This is the first report of CYSDV in Iraq.","PeriodicalId":20251,"journal":{"name":"Plant Health Progress","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135886196","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Prevalence of Stenocarpella maydis and Stenocarpella macrospora causing Diplodia ear rot in Kentucky 肯塔基州麦氏窄笛虫和大孢子窄笛虫引起的穗腐病流行

IF 2.3

Plant Health Progress Pub Date : 2023-08-18 DOI: 10.1094/php-06-23-0060-rs

N. Anderson, K. Wise

引用次数: 0

First report of Hirsutella thompsonii as an entomopathogenic fungus of hemp russet mite (Aculops cannabicola Farkas) in Kentucky 美国肯塔基州大麻赤藓（Aculops cannabicola Farkas）昆虫病原真菌汤普森Hirsutella thompsonii的首次报道

IF 2.3

Plant Health Progress Pub Date : 2023-08-10 DOI: 10.1094/php-04-23-0035-br

María Magdalena Ricciardi, Henry S. Smith, Z. Viloria, E. Dixon, D. Szarka, Bob Pearce, R. Villanueva, N. Gauthier

引用次数: 0