Overview of the South African Plant-Parasitic Nematode Survey (SAPPNS)

2017 ◽  
pp. 451-458 ◽  
Author(s):  
Mariette Marais ◽  
Antoinette Swart ◽  
Naomi Buckley
Keyword(s):  
South African ◽  
Parasitic Nematode ◽  
Plant Parasitic Nematode ◽  
The South ◽  
Plant Parasitic

Aphelenchoides spp. (Nematoda: Aphelenchida) and Panagrolaimus leperisini (Nematoda: Rhabditida) found associated with grass seeds in the Telperion Nature Reserve, South Africa

Zootaxa ◽  
2018 ◽  
Vol 4370 (2) ◽  
pp. 137
Author(s):  
CHANTELLE GIRGAN ◽  
ANTOINETTE SWART ◽  
MARIETTE MARAIS ◽  
HENDRIKA FOURIE
Keyword(s):  
South Africa ◽  
South African ◽  
Nature Reserve ◽  
Parasitic Nematode ◽  
New Records ◽  
The South ◽  
African Populations ◽  
Nematode Diversity ◽  
Plant Parasitic ◽  
South African Populations

As part of the South African Plant-Parasitic Nematode Survey (SAPPNS), an extensive nematode diversity survey was conducted in the Telperion Nature Reserve, Mpumalanga, South Africa. During this survey, samples of grass seeds were collected. Some of these seeds yielded specimens of the genera Aphelenchoides, Aphelenchus and Panagrolaimus. Identified species include Aphelenchoides africanus, A. besseyi, A. lichenicola, A. rutgersi, A. spicomucronatus and Panagrolaimus leperisini. Four of these species are new records for South Africa and the South African populations of these species are described in this paper. 

scholarly journals The role of Caenorhabditis elegans sex-determination homologs, Mi-sdc-1 and Mi-tra-1 in Meloidogyne incognita

2021 ◽  
Author(s):  
Anil Baniya ◽  
Soumi Joseph ◽  
Larry Duncan ◽  
William Crow ◽  
Tesfamariam Mengistu
Keyword(s):  
Caenorhabditis Elegans ◽  
Sex Determination ◽  
Meloidogyne Incognita ◽  
Egg Production ◽  
Target Genes ◽  
Parasitic Nematode ◽  
Plant Parasitic Nematode ◽  
Root Knot Nematode ◽  
Model Free ◽  
Plant Parasitic

AbstractSex determination is a key developmental event in all organisms. The pathway that regulates sexual fate has been well characterized at the molecular level in the model free-living nematode Caenorhabditis elegans. This study aims to gain a preliminary understanding of sex-determining pathways in a plant-parasitic nematode Meloidogyne incognita, and the extent to which the roles of the sex determination genes are conserved in a hermaphrodite species, C. elegans, and plant-parasitic nematode species, M. incognita. In this study, we targeted two sex-determining orthologues, sdc-1 and tra-1 from M. incognita using RNA interference (RNAi). RNAi was performed by soaking second-stage juveniles of M. incognita in a solution containing dsRNA of either Mi-tra-1or Mi-sdc-1 or both. To determine the effect of RNAi of the target genes, the juveniles treated with the dsRNA were inoculated onto a susceptible cultivar of cowpea grown in a nutrient pouch at 28 °C for 5 weeks. The development of the nematodes was analyzed at different time points during the growth period and compared to untreated controls. Our results showed that neither Mi-sdc-1 nor Mi-tra-1 have a significant role in regulating sexual fate in M. incognita. However, the silencing of Mi-sdc-1 significantly delayed maturity to adult females but did not affect egg production in mature females. In contrast, the downregulation of Mi-tra-1 transcript resulted in a significant reduction in egg production in both single and combinatorial RNAi-treated nematodes. Our results indicate that M. incognita may have adopted a divergent function for Mi-sdc-1 and Mi-tra-1distinct from Caenorhabditis spp. However, Mi-tra-1 might have an essential role in female fecundity in M. incognita and is a promising dsRNA target for root-knot nematode (RKN) management using host-delivered RNAi.

Effects of organic amendments on plant-parasitic nematode populations, root damage, and banana plant growth

2011 ◽  
Vol 47 (3) ◽  
pp. 341-347 ◽  
Author(s):  
Perrine Tabarant ◽  
Cécile Villenave ◽  
Jean-Michel Risède ◽  
Jean Roger-Estrade ◽  
Marc Dorel
Keyword(s):  
Plant Growth ◽  
Parasitic Nematode ◽  
Organic Amendments ◽  
Plant Parasitic Nematode ◽  
Root Damage ◽  
Banana Plant ◽  
Plant Parasitic

Effect of Previous Rotation on Plant Parasitic Nematode Population in Peanut and Crop Yield

cftm ◽  
2017 ◽  
Vol 3 (1) ◽  
pp. cftm2016.12.0086 ◽  
Author(s):  
David L. Jordan ◽  
Tommy Corbett ◽  
Clyde Bogle ◽  
Barbara Shew ◽  
Rick Brandenburg ◽  
...  
Keyword(s):  
Crop Yield ◽  
Parasitic Nematode ◽  
Plant Parasitic Nematode ◽  
Nematode Population ◽  
Plant Parasitic

scholarly journals In situ Hybridization (ISH) in Preparasitic and Parasitic Stages of the Plant-parasitic Nematode Meloidogyne spp.

BIO-PROTOCOL ◽  
2018 ◽  
Vol 8 (6) ◽  
Author(s):  
Maëlle Jaouannet ◽  
Chinh-Nghia Nguyen ◽  
Michaël Quentin ◽  
Stéphanie Jaubert-Possamai ◽  
Marie-Noëlle Rosso ◽  
...  
Keyword(s):  
In Situ Hybridization ◽  
Parasitic Nematode ◽  
Plant Parasitic Nematode ◽  
Meloidogyne Spp ◽  
Plant Parasitic
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