Heterodera sojae

Heterodera sojae	Contents	Rev 11/21/2023
White Soybean Cyst Nematode	Classification	Hosts
	Morphology and Anatomy	Life Cycle
Return to Heterodera Menu	Economic Importance	Damage
	Distribution	Management
Return to Heteroderidae Menu	Feeding	References
	Go to Nemaplex Main Menu	Go to Dictionary of Terminology

Classification:

Tylenchida
       Tylenchina
        Tylenchoidea
         Heteroderidae
          Heteroderinae

Heterodera sojae Kang, Eun, Ha, Kim, Park, Kim & Choi, 2016

Synonyms:

Review general characteristics of the genus Heterodera.

Based on morphological and molecular characteristics, Kang et al (2006) consider H. sojae to represent a new group of Heteodera in a clade between the Cyperi group and the Schachtii group of Heterodera spp.

Females:

Cysts:

Vulval cone present
Ambifenestrate
Vulval slit shortRounder, more shiny, and darker than those of H. glycines
Differs from H. glycines by fenestra length (23.5-54.2 um vs. 30-70 um), vulval slit length (9.0-24.4 vs. 43-60 um), tail length of J2 (54.3-74.8 vs. 40-61 um)

Males:

Heterodera sojae A. Entire body of J2. B. Anterior region of J2. C. Anterior region of male. D. Entire of male. E. Tail region of J2. F. Tail region with spicule of male. G. Anterior region of female. H. Cysts. I. Vulval cone.

Source: Kang et al (2016) Downloaded from Researchgate.net

Reported median body size for this species (Length mm; width micrometers; weight micrograms) - Click:

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Distribution:

Reported from soybean in Gyeongsangnam-do, Korea.

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Economic Importance:

Heterodera sojae is widespread in most provinces of Korea. It is considered to have the potential to be as harmful to soybean production as H. glycines.

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Feeding:

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Hosts:

Reported from soybean, Glycine max. The dicotyledonous host is more representative of the Schachtii group than the Cyperi group of Heterodera spp.

For an extensive host range list for this species, click

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Life Cycle:

Ecophysiological Parameters:

For Ecophysiological Parameters for this species, click	If species level data are not available, click for genus level parameters

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Damage:

The white soybean cyst nematode (Heterodera sojae), is widespread in most provinces of Korea. It is considered to have the potential to be as harmful to soybean as H. glycines.

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Management:

Host Plant Resistance, Non-hosts and Crop Rotation alternatives:

For plants reported to have some level of resistance to this species, click

Virulence phenotypes of 15 H. sojae populations from Korea were determined on seven soybean lines and one susceptible check variety. Two HS types were found. The more common HS type, 2.5.7, comprisied 73.3% of the populations; the less common, HS type 0, was represented by 26.7% of the tested populations. Kang et al. (2022) concluded that when considering the high frequency of H. sojae adaptation to soybean indicator lines, the PI 88788 group may not be a useful source of resistance. They suggested that PI 548402, PI 90763, PI 437654, and PI 89772 will be more useful as resistance sources for soybean breeding programs development of cultivars resistant to H. sojae.

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References:

Handoo, Z.A., Subbotin, S.A. 2018. Taxonomy, identification and principal species. Chapter 15 in Perry, R.N. Moens, M., and Jones, J.T.(eds) Cyst Nematodes. CAB International.

Kang, H., Eun, G., Ha, H., Kim, Y., Park, N., Kim, D., Choi. I., 2016. New Cyst Nematode, Heterodera sojae n. sp. (Nematoda: Heteroderidae foom soybean in Korea. J. Nematology 48:280-289.

Kang, H. Ko, H., Park, B., Choi, I. 2022. Characterization of Heterodera sojae viirulence phenotypes in Korea. Plant Pathol. J. 38:366-371 https://doi.org/10.5423/PPJ.OA.03.0046.

Subbotin, S,A., Mundo-Ocampo, M., Baldwin, J.G. 2010. Systematics of Cyst Nematodes (Nematode: Heteroderinae). Nematology Monographs and Perspectives Volume 8B, D.J. Hunt and R.N. Perry (eds) Brill, Leiden, The Netherlands 512p