Status of Pratylenchus coffeae in banana-growing areas of Tanzania

Luambano, Nessie D.; Kashando, Beatrice; Masunga, Minza; Mwenisongole, Ambilikile E.; Mziray, Magreth F.; Mbaga, Jeremiah E.; Polini, Renifrida M.; Mgonja, Doreen M.

doi:10.1016/j.pmpp.2018.08.002

Cited by 13 publications

(9 citation statements)

References 31 publications

(30 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This methodology could play an important role in the development of permanent integrated pest management strategies to mitigate the effects of R. similis in the cultivation of banana and other crops. This work also provides a basis for further nematode research, which should include a comprehensive survey of all major banana-producing regions to determine PPN distribution, for example as presented by Luambano et al (2017) , aggressiveness, and diversity of PPN species that affect banana production in Tanzania, to improve control of the spread of parasitic nematodes in this region.…”

Section: Discussionmentioning

confidence: 99%

Molecular approach to confirm traditional identification of Radopholus similis sampled in Tanzania

Mgonja

Temu

Ndunguru

et al. 2020

Journal of Nematology

Self Cite

View full text Add to dashboard Cite

Banana (Musa spp. L.) is an important staple food and cash crop for about 30% of the population in Tanzania; however, the burrowing plant-parasitic nematode Radopholus similis causes black head disease and toppling in banana plants, which results in yield losses. We collected and identified 80 specimens of R. similis from four agroecological zones in Tanzania using morphological characters. We then used universal and specific R. similis primers to amplify the small subunit, internal transcribed spacer and large subunit of ribosomal DNA regions of these specimens. The amplicons were subsequently sequenced and analyzed using Bayesian inference. We identified two major clades, one that comprised all R. similis sequences derived from this study and another that included R. similis and Radopholus spp. sequences obtained from GenBank, indicating the separation of this species from congeneric sequences. Our findings provide a useful, simple and rapid method for identifying burrowing nematodes. This outcome could contribute to the development of permanent, integrated pest management strategies for the control of R. similis in banana and other crops in order to reduce associated yield losses in Tanzania. To our knowledge, this is the first study of nematodes to use combined morphological and molecular methods for the identification of R. similis in Tanzania.

show abstract

Section: Discussionmentioning

confidence: 99%

Molecular approach to confirm traditional identification of Radopholus similis sampled in Tanzania

Mgonja

Temu

Ndunguru

et al. 2020

Journal of Nematology

Self Cite

View full text Add to dashboard Cite

show abstract

“…and other Helicotylenchus spp., among others, regularly occur [103]. In the hotter lowland areas in East Africa, the nematode community composition has shifted away from R. similis, with Pratylenchus coffeae, as well as P. goodeyi, becoming more prevalent [120][121][122]. In West Africa, however, where R. similis has previously been the dominant nematode pest species, a trend in the rise of P. coffeae has been observed [117].…”

Section: Effects Of Banana Cropping Systems On Nematodesmentioning

confidence: 99%

Functional Diversity of Soil Nematodes in Relation to the Impact of Agriculture—A Review

et al. 2021

View full text Add to dashboard Cite

The analysis of the functional diversity of soil nematodes requires detailed knowledge on theoretical aspects of the biodiversity–ecosystem functioning relationship in natural and managed terrestrial ecosystems. Basic approaches applied are reviewed, focusing on the impact and value of soil nematode diversity in crop production and on the most consistent external drivers affecting their stability. The role of nematode trophic guilds in two intensively cultivated crops are examined in more detail, as representative of agriculture from tropical/subtropical (banana) and temperate (apple) climates. The multiple facets of nematode network analysis, for management of multitrophic interactions and restoration purposes, represent complex tasks that require the integration of different interdisciplinary expertise. Understanding the evolutionary basis of nematode diversity at the field level, and its response to current changes, will help to explain the observed community shifts. Integrating approaches based on evolutionary biology, population genetics and ecology can quantify the contribution of nematode fauna to fundamental soil functions. These include carbon transformation, nutrient cycling, pest control and disease transmission. In conclusion, different facets of nematode diversity such as trophic groups, life history traits, variability in body size and/or taxa identities in combination with DNA-based techniques are needed in order to disclose nematode–soil–ecosystem functioning relationships. Further experimental studies are required to define locally adapted and sustainable management practices, through ecosystem-based approaches and nature-based solutions.

show abstract

“…There are considerable difficulties associated with differentiating species of Pratylenchus morphometrically, especially with the P. coffeae sensu lato group ( 49 ). The nematode species occurrence has altered radically in some places from R. similis to P. coffeae ( 33 ), although elsewhere the ecological range of Pratylenchus goodeyi appears to have adjusted and is now present in hot tropical locations in Tanzania ( 93 ) and Kenya ( 123 ), where it was previously undetected ( 63 , 112 , 116 ). In West Africa, P. coffeae has replaced R. similis ,which has traditionally been the dominant nematode pest; in East Africa, P. coffeae incidence is rising ( 93 , 123 ).…”

Section: Emerging Threats To African Agro-ecosystem Resiliencementioning

confidence: 99%

“…The nematode species occurrence has altered radically in some places from R. similis to P. coffeae ( 33 ), although elsewhere the ecological range of Pratylenchus goodeyi appears to have adjusted and is now present in hot tropical locations in Tanzania ( 93 ) and Kenya ( 123 ), where it was previously undetected ( 63 , 112 , 116 ). In West Africa, P. coffeae has replaced R. similis ,which has traditionally been the dominant nematode pest; in East Africa, P. coffeae incidence is rising ( 93 , 123 ). Uncertainties concerning the validity of nematode species, unless resolved, will present practical problems related to their management and quarantine measures ( 46 ), a point highlighted by the recent discovery of PCNs in SSA.…”

Section: Emerging Threats To African Agro-ecosystem Resiliencementioning

confidence: 99%

Plant-Parasitic Nematodes and Food Security in Sub-Saharan Africa

Coyne

Cortada

Dalzell

et al. 2018

Annu. Rev. Phytopathol.

205

149

View full text Add to dashboard Cite

Sub-Saharan Africa (SSA) is a region beset with challenges, not least its ability to feed itself. Low agricultural productivity, exploding populations, and escalating urbanization have led to declining per capita food availability. In order to reverse this trend, crop production systems must intensify, which brings with it an elevated threat from pests and diseases, including plant-parasitic nematodes. A holistic systems approach to pest management recognizes disciplinary integration. However, a critical under-representation of nematology expertise is a pivotal shortcoming, especially given the magnitude of the threat nematodes pose under more intensified systems. With more volatile climates, efficient use of water by healthy root systems is especially crucial. Within SSA, smallholder farming systems dominate the agricultural landscape, where a limited understanding of nematode problems prevails. This review provides a synopsis of current nematode challenges facing SSA and presents the opportunities to overcome current shortcomings, including a means to increase nematology capacity.

show abstract

Status of Pratylenchus coffeae in banana-growing areas of Tanzania

Cited by 13 publications

References 31 publications

Molecular approach to confirm traditional identification of Radopholus similis sampled in Tanzania

Molecular approach to confirm traditional identification of Radopholus similis sampled in Tanzania

Functional Diversity of Soil Nematodes in Relation to the Impact of Agriculture—A Review

Plant-Parasitic Nematodes and Food Security in Sub-Saharan Africa

Contact Info

Product

Resources

About