Plant-parasitic nematodes in some economically important crops in Myanmar – species, possible damage and control measures

Nematology ◽  
2018 ◽  
Vol 20 (1) ◽  
pp. 1-13 ◽  
Author(s):  
Yu Yu Min ◽  
Koki Toyota
Keyword(s):  
Control Measures ◽  
Parasitic Nematodes ◽  
Yield Losses ◽  
Plant Parasitic Nematodes ◽  
Cropping Patterns ◽  
Oilseed Crops ◽  
Potential Impact ◽  
Collective Information ◽  
And Control ◽  
Plant Parasitic

Rice, pulses and oilseed crops are major exporting crops in Myanmar. Many plant-parasitic nematodes, such asMeloidogyne incognita,M. javanica,M. graminicola,Ditylenchus angustus,Hirschmanniella oryzae,Heterodera cajaniandPratylenchusspp., have been detected in these crops in different cropping patterns and are considered one of the reasons for their low yields. Previous surveys have shown potential impact to yield losses in the crops. This Forum article provides collective information on species of the major plant-parasitic nematodes, possible damage and available control measures to such economically important crops in Myanmar.

Occurrence and importance of plant-parasitic nematodes in organic farming in Germany

Nematology ◽  
2007 ◽  
Vol 9 (6) ◽  
pp. 869-879 ◽  
Author(s):  
Andrea Frankenberg ◽  
Andreas Paffrath ◽  
Johannes Hallmann ◽  
Harald Schmidt
Keyword(s):  
Organic Farming ◽  
High Frequency ◽  
Production Systems ◽  
Parasitic Nematodes ◽  
Yield Losses ◽  
Plant Parasitic Nematodes ◽  
Severe Damage ◽  
Production Factors ◽  
Main Emphasis ◽  
Plant Parasitic

AbstractIn an attempt to evaluate the occurrence and economic importance of plant-parasitic nematodes in organic farming in Germany, a survey was conducted with the main emphasis on vegetable and cereal production systems. For vegetables, the survey included quantification and identification of plant-parasitic nematodes in soil samples and a questionnaire for growers querying production factors and damage levels. For cereals, the survey focused on quantification and identification of plant-parasitic nematodes in soil and plant samples. Overall, Pratylenchus and Tylenchorhynchus were the most prominent nematode genera under both production systems with an incidence of over 90% of the samples. Meloidogyne was detected in 51% of the samples in both systems. Other nematode genera showed differences between the two production systems. In production systems with a high frequency of vegetables, Paratylenchus was detected in 56% of the samples and Heterodera in 15%, whereas in rotations with a high cropping frequency of cereals, incidences of plant-parasitic nematodes were 56% for Heterodera, 47% for Trichodorus and 45% for Paratylenchus. Yield losses could exceed 50% on carrots, onions and cereals and were most pronounced on sandy soils. In many cases, nematode problems started 5 to 10 years after conversion to organic farming. The survey indicated that plant-parasitic nematodes are widely spread in organic farming in Germany and can cause severe damage which may result in complete loss of the crop.

scholarly journals Nematode Population Dynamics after Applications of Plant Extracts and Trichoderma Species as Soil Amendments in Tomato Field

2020 ◽  
Vol 9 (1) ◽  
pp. 43-49
Author(s):  
Timothy I. Olabiyi ◽  
Samuel O. Akinrinola ◽  
Olajumoke E. Ayanda
Keyword(s):  
Plant Extracts ◽  
Azadirachta Indica ◽  
Nematode Population ◽  
Growth And Yield ◽  
Parasitic Nematodes ◽  
Plant Parasitic Nematodes ◽  
Trichoderma Species ◽  
Tomato Field ◽  
And Control ◽  
Plant Parasitic

Three different plant extracts (Khaya ivorensis, Azadirachta indica and Daniella oleifera) and two Trichoderma species (T. harzianum and T. atroviride), singly and in combination, were assessed on nematode population changes and also in the control of plant parasitic nematodes on tomato under field condition during 2018 and 2019 planting seasons. During each trial, plant parasitic nematodes encountered in the field were Meloidogyne, Pratylenchus, Xiphinema and Helicotylenchus species. The experiment was a randomized complete block design with 4 x 3 factorial scheme and five replications. Factor A being plant extracts (Khaya ivorensis, Azadirachta indica, Daniella oleifera) and control, and factor B being bio-control agents (Trichoderma harzianum, T. atroviride) and control, resulting in 12 treatments. Significant reductions were observed on the population of the plant parasitic nematodes at all treatment levels with neem plant extract, in combination with either T. harzianum or T. atroviride resulted in the greatest significant decrease. Applications of different plant extracts and Trichoderma species, singly and in combination, enhanced the growth and yield of tomato infected with parasitic nematodes.

scholarly journals ATP-Binding Cassette (ABC) Transporter Genes in Plant-Parasitic Nematodes: An Opinion for Development of Novel Control Strategy

2020 ◽  
Author(s):  
Rinu Kooliyottil ◽  
Koushik Rao Gadhachanda ◽  
Nejra Solo ◽  
Louise-Marie Dandurand
Keyword(s):  
Immune Response ◽  
Host Plant ◽  
Abc Transporters ◽  
Current Knowledge ◽  
Control Measures ◽  
Parasitic Nematodes ◽  
Initial Contact ◽  
Plant Parasitic Nematodes ◽  
Plant Parasitic ◽  
Detoxification Pathways

The molecular interaction between the nematode and the host plant cells is complex and sophisticated. Initial contact with the plant parasitic nematodes (PPNs) triggers immune response in the host plant system which includes the release of toxic molecules. To put a bridle on this immune response, PPNs trigger pivotal cytoprotective mechanisms, such as antioxidant and detoxification pathways. Mechanisms of these pathways have been studied in PPNs and the specific genes involved have been targeted for gene silencing research in view of developing novel control measures. However, one of the important group of proteins involved in detoxification pathways known as ABC-transporters are not being studied until recently in PPNs. This opinion article focusses on the current knowledge and future prospects of ABC transporters in PPNs.

scholarly journals Community Analysis of Nematodes Associated with Banana, Identification of root knot nematode and Evaluation the Susceptibility of Some Cultivars to Infection

2021 ◽  
Author(s):  
Radwa G. Mostafa ◽  
Aida M. El-Zawahry ◽  
Ashraf E. M. Khalil ◽  
Ameer E. Elfarash ◽  
Ali D. A. Allam
Keyword(s):  
Meloidogyne Javanica ◽  
Nematode Species ◽  
Common Species ◽  
Molecular Techniques ◽  
Control Measures ◽  
Parasitic Nematodes ◽  
Plant Parasitic Nematodes ◽  
Root Knot Nematode ◽  
Root Knot Nematodes ◽  
Plant Parasitic

Abstract Background Plant-parasitic nematodes are extremely dangerous pests in a variety of economically important crops. The purpose of this study was a survey of all nematode species existing in banana from three sites in Assiut Governorate, Egypt and to characterize the most common species by morphological, morphometric and molecular techniques (PCR with species-specific primers). Then, study of resistance or sensitivity of some banana cultivars to root-knot nematodes.Methods and Results Four nematodes, Meloidogyne, Rotylenchulus reniformis, Helicotylenchus and Pratylenchus were isolated and identified from soil and root samples collected from banana plants. Most frequently occurring of plant parasitic nematode species in banana was Meloidogyne. Former research found differences in species and in resistance to root-knot nematodes among the examined plant cultivars. Identification of Root-knot nematodes by Characterize of morphometric, molecularly, morphological isolate of Meloidogyne related to banana plants. The results revealed that the identified nematode species, Meloidogyne javanica, is the most common plant-parasitic nematodes in all locations. Data on the susceptibility of the tested banana cultivars to M. javanica revealed that Grand Naine was highly susceptible (HS) however, Magraby was susceptible (S) but Williams and Hindi cultivars were moderately resistant (MR).Conclusions we concluded that a survey revealed the significant prevalence of Meloidogyne javanica, the most important nematodes on banana in Assiut. The morphometric, morphological, and molecular identification were harmonic with one another. In addition to the host response of certain banana cultivars, to M. javanica that resistance is of significance and can be helpful to incorporate through planning control measures for root- knot nematodes.

A multi-pronged approach for the management of plant parasitic nematodes in vineyards in South Africa.

2021 ◽  
pp. 215-223
Author(s):  
Sheila Storey ◽  
Hans Hugo
Keyword(s):  
South Africa ◽  
Host Range ◽  
Integrated Management ◽  
Soil Health ◽  
Economic Importance ◽  
Control Measures ◽  
Future Research ◽  
Parasitic Nematodes ◽  
Plant Parasitic Nematodes ◽  
Plant Parasitic

Abstract This chapter discusses the economic importance, distribution, host range, and recommended integrated management of plant parasitic nematodes in vineyards in South Africa. Future research requirements into the use of novel control measures which include biocontrol, novel biology and soil health are also mentioned.

scholarly journals The Genus Pratylenchus (Nematoda: Pratylenchidae) in Israel: From Taxonomy to Control Practices

Plants ◽  
2020 ◽  
Vol 9 (11) ◽  
pp. 1475
Author(s):  
Patricia Bucki ◽  
Xue Qing ◽  
Pablo Castillo ◽  
Abraham Gamliel ◽  
Svetlana Dobrinin ◽  
...  
Keyword(s):  
Climatic Conditions ◽  
Control Measures ◽  
Parasitic Nematodes ◽  
Plant Parasitic Nematodes ◽  
Crop Fields ◽  
Pratylenchus Thornei ◽  
Common Control ◽  
Molecular Phylogenetic ◽  
Unidentified Species ◽  
Plant Parasitic

Due to Israel’s successful agricultural production and diverse climatic conditions, plant-parasitic nematodes are flourishing. The occurrence of new, previously unidentified species in Israel or of suggested new species worldwide is a consequence of the continuous withdrawal of efficient nematicides. Among plant-parasitic nematodes, migratory endoparasitic species of the genus Pratylenchus are widely distributed in vegetable and crop fields in Israel and are associated with major reductions in quality and yield. This review focuses on the occurrence, distribution, diagnosis, pathogenicity, and phylogeny of all Pratylenchus species recorded over the last few decades on different crops grown throughout Israel—covering early information from nematologists to recent reports involving the use of molecular phylogenetic methodologies. We explore the accepted distinction between Pratylenchus thornei and Pratylenchus mediterraneus isolated from Israel’s northern Negev region, and address the confusion concerning the findings related to these Pratylenchus species. Our recent sampling from the northern Negev revealed the occurrence of both P. thornei and P. mediterraneus on the basis of molecular identification, indicating P. mediterraneus as a sister species of P. thornei and their potential occurrence in a mixed infection. Finally, the efficiencies of common control measures taken to reduce Pratylenchus’ devastating damage in protected crops and field crops is discussed.

scholarly journals Diversity of plant-parasitic nematodes on medicinal plants in melinh station for biodiversity, Vinh Phuc Province, Vietnam

2019 ◽  
Vol 41 (3) ◽  
Author(s):  
Nguyen Huu Tien ◽  
Nguyen Thi Duyen ◽  
Le Duc Huy ◽  
Nobleza Neriza ◽  
Trinh Quang Phap
Keyword(s):  
Medicinal Plants ◽  
Dominant Species ◽  
Control Measures ◽  
Parasitic Nematodes ◽  
Plant Parasitic Nematodes ◽  
Potential Threat ◽  
The World ◽  
Sustainable Cultivation ◽  
Number Of Individuals ◽  
Plant Parasitic

Plant-parasitic nematodes are known as one of the most important pests attacking various plants in the world, and investigating the nematode component is very essential for management of this pest and prevent damage to plants in general. Our survey of plant-parasitic nematodes on medicinal plants in Melinh Station for Biodiversity, a place for conservation of precious plants and animals in Vietnam, identified ten species that belong to nine genera, five families, and two orders of plant-parasitic nematodes parasitizing six medicinal plants. Excoecaria cochinchinensis was parasitized by the highest number of nematode genera (5 genera, including Xiphinema, Discocriconemella, Meloidogyne, Helicotylenchus, and Hemicriconemoides), while Hymenocallis littoralis was associated with the highest number of plant-parasitic nematodes (2060 nematodes/250g soil). The results also showed that Discocriconemella limitanea was found to be a dominant species with the highest number of individuals on 6 medicinal plants, and the genus Helicotylenchus had the highest frequency of appearance (5/6 plants or 83.3%). These nematodes caused symptoms such as yellowing leaves, root galls, and root lesions, which directly affect the quality and yield of medicinal plants. Based on the results, this study showed that plant-parasitic nematodes are a potential threat to the cultivation of medicinal plants in Melinh Station for Biodiversity, and thus, control measures should be applied to ensure sustainable cultivation of medicinal plants in this place.

scholarly journals Biocontrol of Plant Parasitic Nematodes by Fungi: Efficacy and Control Strategies

2015 ◽  
pp. 219-247 ◽  
Author(s):  
Mohd. Sayeed Akhtar ◽  
Jitendra Panwar ◽  
Siti Nor Akmar Abdullah ◽  
Yasmeen Siddiqui ◽  
Mallappa Kumara Swamy ◽  
...  
Keyword(s):  
Control Strategies ◽  
Parasitic Nematodes ◽  
Plant Parasitic Nematodes ◽  
And Control ◽  
Plant Parasitic

scholarly journals Diversity of plant-parasitic nematodes on medicinal plants in melinh station for biodiversity, Vinh Phuc Province, Vietnam

2019 ◽  
Vol 41 (3) ◽  
Author(s):  
Nguyen Huu Tien ◽  
Nguyen Thi Duyen ◽  
Le Duc Huy ◽  
Nobleza Neriza ◽  
Trinh Quang Phap
Keyword(s):  
Medicinal Plants ◽  
Dominant Species ◽  
Control Measures ◽  
Parasitic Nematodes ◽  
Plant Parasitic Nematodes ◽  
Potential Threat ◽  
The World ◽  
Sustainable Cultivation ◽  
Number Of Individuals ◽  
Plant Parasitic

Plant-parasitic nematodes are known as one of the most important pests attacking various plants in the world, and investigating the nematode component is very essential for management of this pest and prevent damage to plants in general. Our survey of plant-parasitic nematodes on medicinal plants in Melinh Station for Biodiversity, a place for conservation of precious plants and animals in Vietnam, identified ten species that belong to nine genera, five families, and two orders of plant-parasitic nematodes parasitizing six medicinal plants. Excoecaria cochinchinensis was parasitized by the highest number of nematode genera (5 genera, including Xiphinema, Discocriconemella, Meloidogyne, Helicotylenchus, and Hemicriconemoides), while Hymenocallis littoralis was associated with the highest number of plant-parasitic nematodes (2060 nematodes/250g soil). The results also showed that Discocriconemella limitanea was found to be a dominant species with the highest number of individuals on 6 medicinal plants, and the genus Helicotylenchus had the highest frequency of appearance (5/6 plants or 83.3%). These nematodes caused symptoms such as yellowing leaves, root galls, and root lesions, which directly affect the quality and yield of medicinal plants. Based on the results, this study showed that plant-parasitic nematodes are a potential threat to the cultivation of medicinal plants in Melinh Station for Biodiversity, and thus, control measures should be applied to ensure sustainable cultivation of medicinal plants in this place.

Sign in / Sign up

Export Citation Format

Share Document