European Journal of Plant Pathology最新文献_第9页

Taxonomic and phylogenetic assessment of selected fungal pathogens associated with banana fruits in the local markets of northern Thailand 对泰国北部当地市场中与香蕉果实相关的部分真菌病原体进行分类和系统发育评估

IF 1.8 3区农林科学

European Journal of Plant Pathology Pub Date : 2024-04-02 DOI: 10.1007/s10658-024-02842-z

Binu C. Samarakoon, Milan C. Samarakoon, Dhanushka N. Wanasinghe, Ruvishika S. Jayawardena, Kevin D. Hyde, Putarak Chomnunti

{"title":"Taxonomic and phylogenetic assessment of selected fungal pathogens associated with banana fruits in the local markets of northern Thailand","authors":"Binu C. Samarakoon, Milan C. Samarakoon, Dhanushka N. Wanasinghe, Ruvishika S. Jayawardena, Kevin D. Hyde, Putarak Chomnunti","doi":"10.1007/s10658-024-02842-z","DOIUrl":"https://doi.org/10.1007/s10658-024-02842-z","url":null,"abstract":"Bananas are susceptible to various postharvest diseases caused by a diverse range of pathogens. The present study focused on the identification and characterization of two prevalent banana fruit diseases, anthracnose and speckle, in three provinces of northern Thailand. Symptomatic banana fruits were collected from local markets. Surface-sterilized, infected banana skin segments were used to isolate the associated fungi on potato dextrose agar. Morphologically distinct isolates of Colletotrichum spp. and Corynespora sp. were obtained from the anthracnose lesions and speckles, respectively. Fungal identification was based on morphology and phylogenetic analyses of the ITS, LSU, act, cmdA, tub2, chs-1, and gapdh sequences. Colletotrichum musae and C. siamense were identified as the causal agents of post-harvest anthracnose in the bananas Kluai Namwa (Musa acuminata × M. balbisiana; ABB genomic group; Pisang Awak) and Kluai Khai (M. acuminata; AA genomic group; Sucrier), respectively. Corynespora torulosa was found to cause speckles in Kluai Namwa fruits. Koch’s postulates were successfully established by inoculating fresh and unripe banana fruits with the identified strains, and confirmed the pathogenicity. Colletotrichum musae, C. siamense, and C. torulosa were re-isolated from the inoculated fruits and justified with morpho-molecular data. To our knowledge, this is the first confirmed occurrence of C. torulosa causing banana fruit speckles in Kluai Namwa in Thailand. In addition, we document the presence of C. siamense, causing post-harvest anthracnose in Kluai Khai. This study contributes to a better understanding of post-harvest banana diseases and addresses the current challenges in the commercial banana industry in northern Thailand.","PeriodicalId":12052,"journal":{"name":"European Journal of Plant Pathology","volume":"14 1","pages":""},"PeriodicalIF":1.8,"publicationDate":"2024-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140582330","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Haplotype diversity of Heterodera koreana (Tylenchida: Heteroderidae), affecting bamboo in Korea 影响韩国竹子的 Heterodera koreana（天牛科：Heteroderidae）的单倍型多样性

IF 1.8 3区农林科学

European Journal of Plant Pathology Pub Date : 2024-04-02 DOI: 10.1007/s10658-024-02823-2

Heonil Kang, Hyoung-Rai Ko, Yeon-Jeong Lim, Eun-Hyeong Park, Eun-Hwa Kim, Se-Keun Park, Byeong-Yong Park, Hyerim Han

{"title":"Haplotype diversity of Heterodera koreana (Tylenchida: Heteroderidae), affecting bamboo in Korea","authors":"Heonil Kang, Hyoung-Rai Ko, Yeon-Jeong Lim, Eun-Hyeong Park, Eun-Hwa Kim, Se-Keun Park, Byeong-Yong Park, Hyerim Han","doi":"10.1007/s10658-024-02823-2","DOIUrl":"https://doi.org/10.1007/s10658-024-02823-2","url":null,"abstract":"In a survey of plant-parasitic nematodes in agricultural fields, cyst-forming nematodes were found in soil planted bamboo in Korea. The aim of this study was to identify the cyst nematodes based on morphological and molecular characteristics. As the results, the morphology and morphometrics of cysts and second-stage juveniles (J2s) were consistent with those of previous descriptions of Heterodera koreana. In phylogenetic analyses based on DNA sequences, these cyst nematodes were clustered together with clade of H. koreana in internal transcribed spacer (ITS) region, and large subunit D2-D3 segments (LSU D2-D3). These nematodes were clustered together with clade of H. koreana in cytochrome c oxidase subunit I (COI) gene, but a haplotype was different when compared with previous reported haplotypes (haplotype A-C) in Japan. This study showed these cyst nematodes were identified as H. koreana, and a new haplotype of H. koreana is distributed in Korea. We suggest that the new haplotype of H. koreana name as haplotype D.","PeriodicalId":12052,"journal":{"name":"European Journal of Plant Pathology","volume":"83 1","pages":""},"PeriodicalIF":1.8,"publicationDate":"2024-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140582331","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Unveiling the potential antifungal role of essential oils in the management of Rhizoctonia solani causing sheath blight of rice 揭示精油在防治引起水稻鞘枯病的根瘤菌中的潜在抗真菌作用

IF 1.8 3区农林科学

European Journal of Plant Pathology Pub Date : 2024-04-02 DOI: 10.1007/s10658-024-02856-7

{"title":"Unveiling the potential antifungal role of essential oils in the management of Rhizoctonia solani causing sheath blight of rice","authors":"","doi":"10.1007/s10658-024-02856-7","DOIUrl":"https://doi.org/10.1007/s10658-024-02856-7","url":null,"abstract":"<h3>Abstract</h3> The present study aimed to investigate the fungicidal/fungistatic effects of essential oils (EOs) from 14 different plant species against Rhizoctonia solani. Bio-efficacy tests were carried out in a glasshouse and under field conditions during three consecutive years of kharif 2016–2018 by spraying essential oils on healthy rice plants followed by inoculation of R. solani. In vitro results revealed that, three essential oils i.e., Thyme (Thymus vulgaris L.), Cedarwood (Cedrus atiantica), Oregano (Oreganum vulgare) inhibit the mycelial growth by 100, 81.66 and 68.33 per cent respectively. Greenhouse and field experiments showed that Thyme (Thymus vulgaris L.), Cedarwood (Cedrus atiantica), Oregano (Oreganum vulgare) oils show significantly lower values of the disease index (PDI). During three consecutive years field evaluationsof essential oils (Eos) of Thyme (Thymus vulgaris L.), Cedarwood (Cedrus atiantica) and Oregano (Oreganum vulgare) oils recorded lowest PDI when compared with untreated control plot. Gas Chromatography-Mass-spectrometry (GC–MS) results showed limonene (18.38 per cent, peak 11) followed by cymene (12.28 per cent, peak 10), himachalene (16.07 per cent, peak 58) and atlantone (12.02 per cent, peak 79) in cedarwood oil. In oregano oil, limonene (70.55 per cent) was found to be the main compound. Studies on the efficacy of essential oils on yield and per cent yield increase under field conditions have shown that application of essential oils (EOs) such as Thyme (Thymus vulgaris L.), Cedarwood (Cedrus atiantica), and Oregano (Oreganum vulgare) resulted in a yield of 5, 523, 4,506 and 4, 935 kg/ha, respectively, with a per cent yield increase of 55.4, 26.57 and 38.62 per cent, respectively, during Kharif 2015, 2016 and 2017 with slight variations.","PeriodicalId":12052,"journal":{"name":"European Journal of Plant Pathology","volume":"14 1","pages":""},"PeriodicalIF":1.8,"publicationDate":"2024-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140582334","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

GGE biplot technique to delineate genotype × environment interactions to identify the stable resistance sources in the lentil—Stemphylium blight pathosystem 利用 GGE 双图谱技术描述基因型与环境之间的相互作用，以确定扁豆-Stemphylium 枯萎病病原系统中的稳定抗性来源

IF 1.8 3区农林科学

European Journal of Plant Pathology Pub Date : 2024-03-27 DOI: 10.1007/s10658-024-02851-y

{"title":"GGE biplot technique to delineate genotype × environment interactions to identify the stable resistance sources in the lentil—Stemphylium blight pathosystem","authors":"","doi":"10.1007/s10658-024-02851-y","DOIUrl":"https://doi.org/10.1007/s10658-024-02851-y","url":null,"abstract":"<h3>Abstract</h3> Stemphylium blight (SB) is one of the most important biotic stresses of lentil, occuring in almost all major lentil-growing nations. Among 150 species recorded, Stemphylium botryosum (Wallr.) is responsible for inciting SB in lentil. It has a wide host range and perpetuate in the seeds, crop debris and secondary spread occurs through air-borne conidia. The most vulnerable stage of infection is flowering to early pod setting, so, confers a serious threat to lentil production. Environment plays pivotal role in host–pathogen dynamics and also interfere in disease management. This study involves deciphering genotype × environment interactions by utilising GGE biplot to unveil and validate durable resistant genotypes and their performance over three different locations. Primarily, from 70 lentil genotypes, 23 promising genotypes were selected based on their disease reaction (< 30%) against SB and evaluated further across the three locations for two consecutive years. The test result from GGE biplot analysis revealed that genotype exerted higher proportion of variation in SB reaction than environment. Result confirmed the presence of inconsistent genotypic response over locations and years. Selected locations grouped into three environment clusters suggesting the existence of cross over interaction with in the genotypes. Integration of GGE biplot and BLUP analysis identified G-3 (ILL10838/ILWL11/X2016S) as the “ideal” genotype whereas, G-7 (8114/10956/16–1) and G-5 (LIRL22-107/LIRL21-50–1-1–1) as “desirable” genotypes considering their static response against SB over the environment. Genotypes detected through this study could be recommended for their future deployment in lentil resistance breeding programme.","PeriodicalId":12052,"journal":{"name":"European Journal of Plant Pathology","volume":"33 1","pages":""},"PeriodicalIF":1.8,"publicationDate":"2024-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140313481","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Evaluation of physiological and morphological responses of Salix alba and Salix babylonica to witches’ broom gall 评估白沙柳和巴比伦沙柳对女巫扫帚瘿的生理和形态反应

IF 1.8 3区农林科学

European Journal of Plant Pathology Pub Date : 2024-03-27 DOI: 10.1007/s10658-024-02833-0

Behrooz Salehi-Eskandari, Shahla Kazemi Renani, Shokoofeh Hajihashemi

{"title":"Evaluation of physiological and morphological responses of Salix alba and Salix babylonica to witches’ broom gall","authors":"Behrooz Salehi-Eskandari, Shahla Kazemi Renani, Shokoofeh Hajihashemi","doi":"10.1007/s10658-024-02833-0","DOIUrl":"https://doi.org/10.1007/s10658-024-02833-0","url":null,"abstract":"The gall formation in Salix species is caused by Candidatus phytoplasma trifolii. The present study was designed with the aim of evaluation of the morphological and physiological response of two species of Salix alba and Salix babylonica to gallers in the witches’ broom structure. The morphological responses of Salix species to gallers, denoted as biotic stress, were represented by growth suppression of leaves and shoots. Accordingly, the leaf area and shoot internodes significantly decreased, in comparison with healthy plants. The biotic stress can induce oxidative stress, which was observed in the present study with a high accumulation of H2O2 in galled tissues. High accumulation of H2O2 in the infected tissue damaged chlorophyll a and proteins. Even though Salix species induced the antioxidants catalase, peroxidase, proline, anthocyanins and phenols to scavenge reactive oxygen species (ROS), high accumulation of H2O2 was observed in galled tissues. Altogether, regardless of activation of antioxidants in response to galls-induced oxidative stress, ROS accumulation damaged photosynthetic apparatus and proteins.","PeriodicalId":12052,"journal":{"name":"European Journal of Plant Pathology","volume":"1 1","pages":""},"PeriodicalIF":1.8,"publicationDate":"2024-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140313812","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The effect of copper reduction on the control of downy mildew in Mediterranean grapevines 减铜对控制地中海葡萄霜霉病的影响

IF 1.8 3区农林科学

European Journal of Plant Pathology Pub Date : 2024-03-26 DOI: 10.1007/s10658-024-02845-w

{"title":"The effect of copper reduction on the control of downy mildew in Mediterranean grapevines","authors":"","doi":"10.1007/s10658-024-02845-w","DOIUrl":"https://doi.org/10.1007/s10658-024-02845-w","url":null,"abstract":"<h3>Abstract</h3> The application of copper-based fungicides has led to the problematic accumulation of copper in the soil of many European vineyards. In this work, we tested the effectiveness of downy mildew control strategies that considerably reduce the amount of copper, through the application of other non-toxic compounds. The study took place in three different regions of Catalonia, by combining smaller and larger-scale trials for two growing seasons. Although variations among experiments were detected, the treatments used here may reduce the applied copper content by up to 77 percent. The cooper reduction-strategies, which alternated standard copper application of copper oxychloride with applications of products based on Equisetum arvense L., or with applications of products with heptagluconic acid (an alternative formulation with a very low-rate of copper), provided the most consistent protection against downy mildew. Moreover, these treatments reduced copper inputs by 63 and 47 percent as compared to conventional treatments based on repeated applications of copper oxychloride. This work underlines the possibility of reducing the amount of copper applied to control downy mildew in Mediterranean vineyards, through the use of newly-developed formulations.","PeriodicalId":12052,"journal":{"name":"European Journal of Plant Pathology","volume":"31 1","pages":""},"PeriodicalIF":1.8,"publicationDate":"2024-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140302955","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Dynamics of Fusarium graminearum inoculum on residues of naturally infected winter and summer crops 自然感染的冬夏作物残留物上禾谷镰刀菌接种体的动态变化

IF 1.8 3区农林科学

European Journal of Plant Pathology Pub Date : 2024-03-23 DOI: 10.1007/s10658-024-02850-z

Cecilia A. Mourelos, Ismael Malbrán, Diego Mengual Gómez, Pablo D. Ghiringhelli, Gladys A. Lori

{"title":"Dynamics of Fusarium graminearum inoculum on residues of naturally infected winter and summer crops","authors":"Cecilia A. Mourelos, Ismael Malbrán, Diego Mengual Gómez, Pablo D. Ghiringhelli, Gladys A. Lori","doi":"10.1007/s10658-024-02850-z","DOIUrl":"https://doi.org/10.1007/s10658-024-02850-z","url":null,"abstract":"Fusarium graminearum is considered the main cause of Fusarium head blight (FHB) in Argentina. The development of this pathogen is dependent on weather conditions, and its occurrence results in economic losses associated with yield reduction, lower quality of grains, and frequent contamination with mycotoxins. The main inoculum source for FHB is F. graminearum perithecia in crop debris where the pathogen survives saprophytically. The adoption of conservationist tillage practices, which leave crop residues on the soil surface, impacts on the volume of inocula available which, in combination with the lack of FHB resistant wheat cultivars, increases the risk of disease development. Our objective was to analyze the long-term dynamics of F. graminearum inocula on different winter and summer crop residues. To do so, five winter cereal species (soft and durum wheat, barley, rye and tritordeum) were cultivated and harvested, and soybean was sown under no-till on the crop debris. The presence and viability of Fusarium graminearum propagules were later evaluated on the residues of the six crops in the 14 months following the harvest of soybean. A qPCR fungal quantification method was developed using previously available primers. The results obtained confirmed the presence and viability of the inoculum in all substrates throughout the time considered. Furthermore, a direct relationship was found between the amount of inoculum in the residues of the soybean sown under a zero-tillage system and the inoculum in the residues of the winter cereals previously sown. This research provides information that could help reduce the sources of F. graminearum inoculum and establish pre-harvest management strategies aimed at preventing mycotoxin contamination in the food chain.","PeriodicalId":12052,"journal":{"name":"European Journal of Plant Pathology","volume":"30 1","pages":""},"PeriodicalIF":1.8,"publicationDate":"2024-03-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140199776","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The antifungal effects of some plant extracts on Sclerotium rolfsii, the causal agent of peanut white stem rot disease 一些植物提取物对花生白茎腐病病原菌 Sclerotium rolfsii 的抗真菌作用

IF 1.8 3区农林科学

European Journal of Plant Pathology Pub Date : 2024-03-22 DOI: 10.1007/s10658-024-02848-7

Mohammad Reza Safari Motlagh, Leila Ebrahimi

{"title":"The antifungal effects of some plant extracts on Sclerotium rolfsii, the causal agent of peanut white stem rot disease","authors":"Mohammad Reza Safari Motlagh, Leila Ebrahimi","doi":"10.1007/s10658-024-02848-7","DOIUrl":"https://doi.org/10.1007/s10658-024-02848-7","url":null,"abstract":"Secondary metabolites of plants are used to protect plants against fungal and bacterial diseases. This research evaluated the effect of 10 plant extracts prepared with either ethanol solvent or methanol solvent on the control of Sclerotium rolfsii, the causal agent of peanut white stem rot disease, under in vitro and greenhouse conditions. The plant extracts were extracted from Trachyspermum copticum, Ocimum basilicum, Eugenia caryophillata, Eucalyptus camaldulensis, Thymus pubescens, Mentha aquatical, Urtica dioica, Rosmarinus officinalis, Artemisia dracunculus, and Viola odorata. The in vitro trials were conducted on both the ethanolic and methanolic extracts at different rates of 0, 0.5, 0.75, 0.125, and 1.0 in a factorial experiment based on a completely randomized design in three replications. The greenhouse trials examined the effects of 10 net plant extracts on the morphological traits and peanut crown infection percentage. According to the in vitro trials, the highest inhibitory activity was observed in the ethanolic and methanolic extracts of E. caryophillata so that it fully inhibited the mycelial growth of the pathogen irrespective of its rate. In the greenhouse trials, E. camaldulensis among the ethanolic extracts and R. officinalis among the methanolic extracts were most effective in reducing disease severity. All studied plant extracts improved the vegetative traits of the peanuts. Based on the results, the extracts of E. caryophillata, E. camaldulensis, and R. officinalis can be used to biologically control peanut white stem rot disease. How plant extracts act has practical relevance for suppressing pathogenic fungi because they can provide useful information for preparing appropriate specific formulations.","PeriodicalId":12052,"journal":{"name":"European Journal of Plant Pathology","volume":"123 1","pages":""},"PeriodicalIF":1.8,"publicationDate":"2024-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140199777","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Seed bio-/chemo-priming affects the reaction of sugar beet plants to Beet curly top virus-Svr 种子生物/化学引种影响甜菜植物对甜菜卷曲顶端病毒-Svr 的反应

IF 1.8 3区农林科学

European Journal of Plant Pathology Pub Date : 2024-03-20 DOI: 10.1007/s10658-024-02843-y

Keyvan Mafakheri, Sajad Astaraki, Naser Safaie, Masoud Shams-bakhsh

{"title":"Seed bio-/chemo-priming affects the reaction of sugar beet plants to Beet curly top virus-Svr","authors":"Keyvan Mafakheri, Sajad Astaraki, Naser Safaie, Masoud Shams-bakhsh","doi":"10.1007/s10658-024-02843-y","DOIUrl":"https://doi.org/10.1007/s10658-024-02843-y","url":null,"abstract":"Beet curly top disease is one of the most important viral diseases that causes economic damage to the yield of beet crops. The present study aimed to evaluate the effect of treating the Paya cultivar of sugar beet with Bacillus subtilis, Trichoderma harzianum, and Beta-aminobutyric acid (BABA), alone and in combination, on the growth and reaction of sugar beet to Beet curly top virus-Svr (BCTV-Svr). Anthocyanin concentration, peroxidase, and polyphenol oxidase enzyme activity were measured by spectrophotometry 14 days post-inoculation (dpi). At thirty dpi, virus accumulation was measured by quantitative polymerase chain reaction (qPCR), and physiological parameters in plants were assessed. The experiments were performed in a factorial, completely randomized design. The first symptoms of BCTV-Svr were observed at nine dpi in the control plants, while the symptoms appeared at 19 dpi in plants treated with B. subtilis, and between 12 and 14 dpi in the other treatments. Plants treated with B. subtilis and BABA showed the lowest and highest severity of the disease, respectively. The results of qPCR were consistent with the symptom severity results, and showed a significant difference in BCTV-Svr accumulation among the treatments. The highest level of anthocyanin concentration was observed in the B. subtilis treatment. On the other hand, polyphenol oxidase and peroxidase activity was increased using viral stress treatments at 14 dpi. The analyses showed that, in general, B. subtilis was more effective in inducing anthocyanin and enzyme activity in healthy and infected plants than the other treatments.","PeriodicalId":12052,"journal":{"name":"European Journal of Plant Pathology","volume":"2 1","pages":""},"PeriodicalIF":1.8,"publicationDate":"2024-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140199832","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Dynamic analysis of resistance in Colombian elite Hevea brasiliensis genotypes as a breeding strategy for enhancing South American leaf blight management under disease non-escape conditions in the Amazon region 哥伦比亚巴西红豆杉（Hevea brasiliensis）精英基因型的抗性动态分析，作为在亚马逊地区无病害条件下加强南美叶枯病管理的育种战略

IF 1.8 3区农林科学

European Journal of Plant Pathology Pub Date : 2024-03-18 DOI: 10.1007/s10658-024-02840-1

Lyda Constanza Galindo-Rodríguez, Armando Sterling, Herminton Muñoz-Ramirez, Edgar Martínez-Moyano, Jesica Andrea Fonseca-Restrepo, Luis Carlos Loaiza-Molina

{"title":"Dynamic analysis of resistance in Colombian elite Hevea brasiliensis genotypes as a breeding strategy for enhancing South American leaf blight management under disease non-escape conditions in the Amazon region","authors":"Lyda Constanza Galindo-Rodríguez, Armando Sterling, Herminton Muñoz-Ramirez, Edgar Martínez-Moyano, Jesica Andrea Fonseca-Restrepo, Luis Carlos Loaiza-Molina","doi":"10.1007/s10658-024-02840-1","DOIUrl":"https://doi.org/10.1007/s10658-024-02840-1","url":null,"abstract":"South American Leaf Blight (SALB) is the primary limitation to the establishment of new rubber (Hevea brasiliensis) crops in Latin America. This study aimed to assess the temporal dynamics of resistance to SALB in 99 elite Colombian genotypes and the IAN 873 cultivar (control) of H. brasiliensis in small-scale clone trials conducted under conditions with a high disease prevalence in the northwestern Colombian Amazon. Resistance monitoring was carried out on a monthly basis and analyzed over five climatic periods. Three variables were recorded: attack severity (AT, ranging from 0 to 4), reaction type (TR, ranging from 1 to 6) and stromal density (ST, ranging from 0 to 4). The maximum scores for TR and ST were used to classify the level of resistance of the genotypes. Highly significant differences in the mean values of AT, TR and ST among the genotypes, across the periods, and in the interaction between genotype and period were found. Over time, an increase in symptoms (AT) and signs (TR and ST) of SALB was observed. During the rainy periods, SALB intensity was highest, resulting in a leaf area affected ranging from 16 to 30%. Eight genotypes showed partial resistance (PR) (TR < 5 and ST < 2), while 16 genotypes demonstrated complete resistance (CR) (TR < 3 and ST = 0), and 76 genotypes were highly susceptible (HS) (TR > 5 or ST > 2). The temporal analysis identified 23 Colombian superior genotypes with varying degrees of SALB resistance, which can be a valuable breeding resource for improving SALB management in the Colombian Amazon region.","PeriodicalId":12052,"journal":{"name":"European Journal of Plant Pathology","volume":"91 1","pages":""},"PeriodicalIF":1.8,"publicationDate":"2024-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140155091","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0