SSR mapping and confirmation of the QTL from PI96354 conditioning soybean resistance to southern root-knot nematode

Li, Z.; Jakkula, Lakshmi R.; Hussey, R. S.; Tamulonis, J. P.; Boerma, H. R.

doi:10.1007/s001220100672

Cited by 84 publications

(104 citation statements)

References 13 publications

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“…The F 2 population was screened with a number of SSR evenly distributed throughout the soybean genome, with Satt201, Satt358, Satt487 and Satt590 being the SSR markers identified as those linked to the resistance trait. 46 QTL data obtained for LS5995 differed from those published by other authors 41,42 because no SSR markers could be identified in association with resistance to M. incognita in LS5995 on LG-G. In contrast, a minor QTL (Satt012) on LG-G that explained 18% of the variation in M. incognita gall indices 41 as well as three SNPs in Satt199 source-sequences were linked near a major QTL in the exotic line PI96354.…”

Section: Meloidogyne Incognitacontrasting

confidence: 60%

“…On the other hand, the major QTL on LG-M identified in this study explained 80% of the variation in M. incognita eggs and J2 numbers/root system. The latter QTL was not identified in the exotic line PI96354, 42 suggesting that different resistance mechanisms are involved in the two genotypes. The frequency distribution of the F 2 progeny for both M. incognita gall indices and eggs and J2 numbers/ root system suggested that resistance in LS5995 was quantitatively inherited and is thus controlled by a number of genes and not by partially dominant inheritance of one major gene.…”

Section: Meloidogyne Incognitamentioning

confidence: 95%

“…marker-assisted selection (MAS) during breeding, have been applied widely to improve the success rate and levels of rootknot nematode resistance selection 28 and to accelerate the development of soybean cultivars that exhibit this trait. [39][40][41][42][43][44] Genetic markers associated with resistance to M. incognita [41][42][43] , M. javanica 39,44 and M. arenaria 40 have been identified using amplified fragment length polymorphism (AFLP), restriction fragment length polymorphism (RFLP), sequence characterised amplified regions (SCAR) and/or micro-satellite or simple sequence repeat (SSR) markers. The use of such markers linked to root-knot nematode resistance traits in soybean cultivars and subsequent application of MAS is a quick and effective way to expedite nematode resistance breeding processes 28,[39][40][41][42][43][44] , which has also been exploited in local resistance breeding programmes 45,46 .…”

Section: Molecular Markers Linked To Root-knot Nematode Resistancementioning

confidence: 99%

“…In contrast, a minor QTL (Satt012) on LG-G that explained 18% of the variation in M. incognita gall indices 41 as well as three SNPs in Satt199 source-sequences were linked near a major QTL in the exotic line PI96354. 42 In the local F 2 mapping population, two QTLs were identified using variation in gall indices and egg and J2 numbers/root system. One of these was located on LG-O (close to the one identified for the exotic line PI96354), 42 while the other major QTL was located on LG-M.…”

Section: Meloidogyne Incognitamentioning

confidence: 99%

“…42 In the local F 2 mapping population, two QTLs were identified using variation in gall indices and egg and J2 numbers/root system. One of these was located on LG-O (close to the one identified for the exotic line PI96354), 42 while the other major QTL was located on LG-M. The QTL located near Satt358 explained 56% of the variation in gall indices on LG-O for PI96354, while in local cultivar LS5995, it only explained 32% of the phenotypic variation for this parameter.…”

Section: Meloidogyne Incognitamentioning

confidence: 99%

See 4 more Smart Citations

Nematode pests threatening soybean production in South Africa, with reference to Meloidogyne

Fourie¹,

Waele²,

Donald³

et al. 2015

S. Afr. J. Sci.

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DeceasedThe area planted to soybean in South Africa has increased by 54% since the 2009 growing season, mainly as a result of the increasing demand for protein-rich food and fodder sources. Moreover, the introduction of advanced technology, namely the availability of genetically modified herbicide tolerant soybean cultivars also contributed towards increased soybean production. The omnipresence of plant-parasitic nematodes in local agricultural soils, however, poses a threat to the sustainable expansion and production of soybean and other rotation crops. Meloidogyne incognita and M. javanica are the predominant nematode pests in local soybean production areas and those where other grain-, legume-and/or vegetable crops are grown. The lack of registered nematicides for soybean locally, crop production systems that are conducive to nematode pest build-ups as well as the limited availability of genetic host plant resistance to root-knot nematode pests, complicate their management. Research aimed at various aspects related to soybean-nematode research, namely, audits of nematode assemblages associated with the crop, identification of genetic host plant resistance in soybean germplasm to M. incognita and M. javanica, the use of molecular markers that are linked to such genetic resistance traits as well as agronomic performance of pre-released cultivars that can be valuable to producers and the industry are accentuated in this review. Evaluation of syntheticallyderived as well as biological-control agents are also discussed as complementary management tactics. It is important that lessons learned through extensive research on soybean-nematode interactions in South Africa be shared with researchers and industries in other countries as they might experience or expect similar problems and/or challenges.

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Section: Meloidogyne Incognitacontrasting

confidence: 60%

Section: Meloidogyne Incognitamentioning

confidence: 95%

Section: Molecular Markers Linked To Root-knot Nematode Resistancementioning

confidence: 99%

Section: Meloidogyne Incognitamentioning

confidence: 99%

Section: Meloidogyne Incognitamentioning

confidence: 99%

See 3 more Smart Citations

Nematode pests threatening soybean production in South Africa, with reference to Meloidogyne

Fourie¹,

Waele²,

Donald³

et al. 2015

S. Afr. J. Sci.

View full text Add to dashboard Cite

show abstract

Nematode Resistance in Soybean

Vuong¹,

Jiao²,

Shannon³

et al. 2013

Translational Genomics for Crop Breeding

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A major quantitative trait locus resistant to southern root‐knot nematode sustains soybean yield under nematode pressure

et al. 2021

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Southern root‐knot nematode (SRKN) is one of the most yield‐suppressing pathogens in soybean [(Glycine max (L.) Merr.] in the United States. With limited chemical and cultural management options, the use of genetic resistance is the most efficient and economical approach to control SRKN. A major quantitative trait locus (QTL) mapped to chromosome 10 is the primary source of resistance in soybean cultivars; however, limited studies have been conducted to evaluate its efficacy in minimizing yield suppression under field conditions with SRKN pressure. This study evaluated the yield performance of 202 elite soybean lines in field conditions with variable distribution of SRKN. Soybean lines were characterized based on the presence of the major QTL on chromosome 10 and grown in four‐row yield plots across six environments over 2 yr. Plots were soil sampled and enumerated to determine nematode population densities. No statistically significant differences in yield performance between resistant and susceptible lines were observed in the absence of nematode pressure, indicating no yield drag associated with resistance. Under SRKN pressure, the group of resistant lines yielded, on average, 19.1 and 23.3% higher than the susceptible lines in 2018 and 2019, respectively. For the susceptible lines, the presence of 1,000 SRKN second‐stage juveniles (J2) in 100 cm−3 of soil negatively affected yield by 6.2%. The presence of the major resistance allele on chromosome 10 reduced yield losses by approximately six‐fold in comparison to the susceptible group which provided significant yield protection under high SRKN pressure.

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SSR mapping and confirmation of the QTL from PI96354 conditioning soybean resistance to southern root-knot nematode

Cited by 84 publications

References 13 publications

Nematode pests threatening soybean production in South Africa, with reference to Meloidogyne

Nematode pests threatening soybean production in South Africa, with reference to Meloidogyne

Nematode Resistance in Soybean

A major quantitative trait locus resistant to southern root‐knot nematode sustains soybean yield under nematode pressure

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