Genetic Variation among Heterodera schachtii Populations Coincided with Differences in Invasion and Propagation in Roots of a Set of Cruciferous Plants

Abstract

Genes of host plants and parasitic nematodes govern the plant–nematode interaction. The biological receptors and parasitism effectors are variable among plant species and nematode populations, respectively. In the present study, hatch testing and bioassays on cabbage, oilseed radish, and mustard were conducted to compare the biological characteristics among six populations of the beet cyst nematode Heterodera schachtii. Genetic patterns of the vap1 gene for the studied populations were distinct as shown by denaturing the gradient gel electrophoresis of PCR-amplified gene fragments. Concurrently, significant differences in the hatching rates, number of penetrated J2 in roots, and eggs/cyst ratios among the six nematode populations for the three cruciferous species were observed. In conclusion, analyzing the population genetic structure of H. schachtii plays a pivotal role in illustrating the variability in the plant–nematode interaction among its populations and plant species, which in its role leads to developing nematode management depending on plant resistance.

No Pairwise Interactions of GmSNAP18, GmSHMT08 and AtPR1 with Suppressed AtPR1 Expression Enhance the Susceptibility of Arabidopsis to Beet Cyst Nematode

“…These combined comparisons further support that no pairwise interactions of GmSNAP18, GmSHMT08, and AtPR1 with suppressed expression of AtPR1 enhanced the susceptibility of Arabidopsis to BCN. Nuaima et al (2023) studied six Heterodera schachtii populations that coincided with differences in invasion and propagation in plant roots, which show that the plant–nematode interaction between cruciferous plants and H. schachtii occurred in a host- and population-specific manner [ 31 ]. The specialized interaction with each plant variety may explain why GmSNAP18 and GmSHMT08 show different interactions in soybean and Arabidopsis with SCN and BCN.…”

Contribution of parasite and host genotype to immunopathology of schistosome infections

“…In specific cases, such as Schistocephalus solidus tapeworms of sticklebacks, host immune gene expression and immunological parameters vary depending on the parasite population they are infected with [7]. Moreover, genetic variation impacts infection rate, egg burden per cyst, and egg hatching rate in the sugarbeet nematode Heterodera schachtii , with implications for pathogenicity in plants [8]. Different Trichinella spiralis nematode isolates exhibit significant variation in infection clearance, larval burden, and host-inflammatory response in mammalian hosts [9,10].…”

Contribution of parasite and host genotype to immunopathology of schistosome infections

“…In specific cases, such as Schistocephalus solidus tapeworms of sticklebacks, host immune gene expression and immunological parameters vary depending on the parasite population they are infected with [ 9 ]. Moreover, genetic variation impacts infection rate, egg burden per cyst and egg hatching rate in the sugarbeet nematode Heterodera schachtii , with implications for pathogenicity in plants [ 10 ]. Different Trichinella spiralis nematode isolates exhibit significant variation in infection clearance, larval burden and host-inflammatory response in mammalian hosts [ 11 , 12 ].…”