Evaluation of Soil Suppressiveness of Various Japanese Soils against the Soybean Cyst Nematode <i<Heterodera glycines</i< and Its Relation with the Soil Chemical and Biological Properties

This study aimed to evaluate the suppressive potential of different soils on soybean cyst nematodes (SCN) and to estimate the suppressive mechanism. Fifteen soils (designated as soil A to O) from different agricultural fields with varying organic inputs were added with SCN-infested soil and grown wi...
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Autor*in:	Yanyan Yang [verfasserIn] Junnan Wu [verfasserIn] Roland N. Perry [verfasserIn] Koki Toyota [verfasserIn]

Format:	E-Artikel
Sprache:	Englisch

Erschienen:	2023

Schlagwörter:	soybean cyst nematode (SCN) suppression disease-suppressive soils soil fungi

Übergeordnetes Werk:	In: Agronomy - MDPI AG, 2012, 13(2023), 11, p 2826
Übergeordnetes Werk:	volume:13 ; year:2023 ; number:11, p 2826

Links:	Link aufrufen Link aufrufen Link aufrufen Journal toc

DOI / URN:	10.3390/agronomy13112826

Katalog-ID:	DOAJ101285868

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520			\|a This study aimed to evaluate the suppressive potential of different soils on soybean cyst nematodes (SCN) and to estimate the suppressive mechanism. Fifteen soils (designated as soil A to O) from different agricultural fields with varying organic inputs were added with SCN-infested soil and grown with a green soybean variety. The SCN density in the soil at 6 weeks of soybean growth was markedly different depending on the soils used, indicating a different level of disease suppressiveness. No significant correlation was observed between the SCN density and any of the soil physicochemical and biological characteristics tested. Then, to estimate a suppression mechanism, F-soil that showed the lowest density of SCN was added to the SCN-infested soil with or without streptomycin to kill bacteria and grown with soybean. SCN density was not increased by the addition of streptomycin, indicating that soil bacteria may not be involved in the suppressiveness of F-soil. In total, 128 fungal strains were isolated from the rhizosphere of F-soil and inoculated in a combination or singly in the SCN-infested soil. After repeated screenings, five strains were selected since the SCN density was consistently decreased by them. Sequence analysis showed that they were closest to <i<Clonostachys rosea</i<, <i<Aspergillus niger</i<, <i<Aspergillus fumigatus</i<, <i<Fusarium oxysporum,</i< and <i<Cylindrodendrum alicantinum</i<. All five strains significantly reduced the mobility of second-stage juveniles (J2). Further, <i<C. rosea</i< a2, <i<A. niger</i< a8, and <i<F. oxysporum</i< a25 significantly decreased hatching. Overall, the present study demonstrated that soil fungi played an important role in SCN suppression in F-soil.
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allfields	10.3390/agronomy13112826 doi (DE-627)DOAJ101285868 (DE-599)DOAJb42244d1703a4528b4f303ba591ea850 DE-627 ger DE-627 rakwb eng Yanyan Yang verfasserin aut Evaluation of Soil Suppressiveness of Various Japanese Soils against the Soybean Cyst Nematode <i<Heterodera glycines</i< and Its Relation with the Soil Chemical and Biological Properties 2023 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier This study aimed to evaluate the suppressive potential of different soils on soybean cyst nematodes (SCN) and to estimate the suppressive mechanism. Fifteen soils (designated as soil A to O) from different agricultural fields with varying organic inputs were added with SCN-infested soil and grown with a green soybean variety. The SCN density in the soil at 6 weeks of soybean growth was markedly different depending on the soils used, indicating a different level of disease suppressiveness. No significant correlation was observed between the SCN density and any of the soil physicochemical and biological characteristics tested. Then, to estimate a suppression mechanism, F-soil that showed the lowest density of SCN was added to the SCN-infested soil with or without streptomycin to kill bacteria and grown with soybean. SCN density was not increased by the addition of streptomycin, indicating that soil bacteria may not be involved in the suppressiveness of F-soil. In total, 128 fungal strains were isolated from the rhizosphere of F-soil and inoculated in a combination or singly in the SCN-infested soil. After repeated screenings, five strains were selected since the SCN density was consistently decreased by them. Sequence analysis showed that they were closest to <i<Clonostachys rosea</i<, <i<Aspergillus niger</i<, <i<Aspergillus fumigatus</i<, <i<Fusarium oxysporum,</i< and <i<Cylindrodendrum alicantinum</i<. All five strains significantly reduced the mobility of second-stage juveniles (J2). Further, <i<C. rosea</i< a2, <i<A. niger</i< a8, and <i<F. oxysporum</i< a25 significantly decreased hatching. Overall, the present study demonstrated that soil fungi played an important role in SCN suppression in F-soil. soybean cyst nematode (SCN) suppression disease-suppressive soils soil fungi Agriculture S Junnan Wu verfasserin aut Roland N. Perry verfasserin aut Koki Toyota verfasserin aut In Agronomy MDPI AG, 2012 13(2023), 11, p 2826 (DE-627)658000543 (DE-600)2607043-1 20734395 nnns volume:13 year:2023 number:11, p 2826 https://doi.org/10.3390/agronomy13112826 kostenfrei https://doaj.org/article/b42244d1703a4528b4f303ba591ea850 kostenfrei https://www.mdpi.com/2073-4395/13/11/2826 kostenfrei https://doaj.org/toc/2073-4395 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_24 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 13 2023 11, p 2826
spelling	10.3390/agronomy13112826 doi (DE-627)DOAJ101285868 (DE-599)DOAJb42244d1703a4528b4f303ba591ea850 DE-627 ger DE-627 rakwb eng Yanyan Yang verfasserin aut Evaluation of Soil Suppressiveness of Various Japanese Soils against the Soybean Cyst Nematode <i<Heterodera glycines</i< and Its Relation with the Soil Chemical and Biological Properties 2023 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier This study aimed to evaluate the suppressive potential of different soils on soybean cyst nematodes (SCN) and to estimate the suppressive mechanism. Fifteen soils (designated as soil A to O) from different agricultural fields with varying organic inputs were added with SCN-infested soil and grown with a green soybean variety. The SCN density in the soil at 6 weeks of soybean growth was markedly different depending on the soils used, indicating a different level of disease suppressiveness. No significant correlation was observed between the SCN density and any of the soil physicochemical and biological characteristics tested. Then, to estimate a suppression mechanism, F-soil that showed the lowest density of SCN was added to the SCN-infested soil with or without streptomycin to kill bacteria and grown with soybean. SCN density was not increased by the addition of streptomycin, indicating that soil bacteria may not be involved in the suppressiveness of F-soil. In total, 128 fungal strains were isolated from the rhizosphere of F-soil and inoculated in a combination or singly in the SCN-infested soil. After repeated screenings, five strains were selected since the SCN density was consistently decreased by them. Sequence analysis showed that they were closest to <i<Clonostachys rosea</i<, <i<Aspergillus niger</i<, <i<Aspergillus fumigatus</i<, <i<Fusarium oxysporum,</i< and <i<Cylindrodendrum alicantinum</i<. All five strains significantly reduced the mobility of second-stage juveniles (J2). Further, <i<C. rosea</i< a2, <i<A. niger</i< a8, and <i<F. oxysporum</i< a25 significantly decreased hatching. Overall, the present study demonstrated that soil fungi played an important role in SCN suppression in F-soil. soybean cyst nematode (SCN) suppression disease-suppressive soils soil fungi Agriculture S Junnan Wu verfasserin aut Roland N. Perry verfasserin aut Koki Toyota verfasserin aut In Agronomy MDPI AG, 2012 13(2023), 11, p 2826 (DE-627)658000543 (DE-600)2607043-1 20734395 nnns volume:13 year:2023 number:11, p 2826 https://doi.org/10.3390/agronomy13112826 kostenfrei https://doaj.org/article/b42244d1703a4528b4f303ba591ea850 kostenfrei https://www.mdpi.com/2073-4395/13/11/2826 kostenfrei https://doaj.org/toc/2073-4395 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_24 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 13 2023 11, p 2826
allfields_unstemmed	10.3390/agronomy13112826 doi (DE-627)DOAJ101285868 (DE-599)DOAJb42244d1703a4528b4f303ba591ea850 DE-627 ger DE-627 rakwb eng Yanyan Yang verfasserin aut Evaluation of Soil Suppressiveness of Various Japanese Soils against the Soybean Cyst Nematode <i<Heterodera glycines</i< and Its Relation with the Soil Chemical and Biological Properties 2023 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier This study aimed to evaluate the suppressive potential of different soils on soybean cyst nematodes (SCN) and to estimate the suppressive mechanism. Fifteen soils (designated as soil A to O) from different agricultural fields with varying organic inputs were added with SCN-infested soil and grown with a green soybean variety. The SCN density in the soil at 6 weeks of soybean growth was markedly different depending on the soils used, indicating a different level of disease suppressiveness. No significant correlation was observed between the SCN density and any of the soil physicochemical and biological characteristics tested. Then, to estimate a suppression mechanism, F-soil that showed the lowest density of SCN was added to the SCN-infested soil with or without streptomycin to kill bacteria and grown with soybean. SCN density was not increased by the addition of streptomycin, indicating that soil bacteria may not be involved in the suppressiveness of F-soil. In total, 128 fungal strains were isolated from the rhizosphere of F-soil and inoculated in a combination or singly in the SCN-infested soil. After repeated screenings, five strains were selected since the SCN density was consistently decreased by them. Sequence analysis showed that they were closest to <i<Clonostachys rosea</i<, <i<Aspergillus niger</i<, <i<Aspergillus fumigatus</i<, <i<Fusarium oxysporum,</i< and <i<Cylindrodendrum alicantinum</i<. All five strains significantly reduced the mobility of second-stage juveniles (J2). Further, <i<C. rosea</i< a2, <i<A. niger</i< a8, and <i<F. oxysporum</i< a25 significantly decreased hatching. Overall, the present study demonstrated that soil fungi played an important role in SCN suppression in F-soil. soybean cyst nematode (SCN) suppression disease-suppressive soils soil fungi Agriculture S Junnan Wu verfasserin aut Roland N. Perry verfasserin aut Koki Toyota verfasserin aut In Agronomy MDPI AG, 2012 13(2023), 11, p 2826 (DE-627)658000543 (DE-600)2607043-1 20734395 nnns volume:13 year:2023 number:11, p 2826 https://doi.org/10.3390/agronomy13112826 kostenfrei https://doaj.org/article/b42244d1703a4528b4f303ba591ea850 kostenfrei https://www.mdpi.com/2073-4395/13/11/2826 kostenfrei https://doaj.org/toc/2073-4395 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_24 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 13 2023 11, p 2826
allfieldsGer	10.3390/agronomy13112826 doi (DE-627)DOAJ101285868 (DE-599)DOAJb42244d1703a4528b4f303ba591ea850 DE-627 ger DE-627 rakwb eng Yanyan Yang verfasserin aut Evaluation of Soil Suppressiveness of Various Japanese Soils against the Soybean Cyst Nematode <i<Heterodera glycines</i< and Its Relation with the Soil Chemical and Biological Properties 2023 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier This study aimed to evaluate the suppressive potential of different soils on soybean cyst nematodes (SCN) and to estimate the suppressive mechanism. Fifteen soils (designated as soil A to O) from different agricultural fields with varying organic inputs were added with SCN-infested soil and grown with a green soybean variety. The SCN density in the soil at 6 weeks of soybean growth was markedly different depending on the soils used, indicating a different level of disease suppressiveness. No significant correlation was observed between the SCN density and any of the soil physicochemical and biological characteristics tested. Then, to estimate a suppression mechanism, F-soil that showed the lowest density of SCN was added to the SCN-infested soil with or without streptomycin to kill bacteria and grown with soybean. SCN density was not increased by the addition of streptomycin, indicating that soil bacteria may not be involved in the suppressiveness of F-soil. In total, 128 fungal strains were isolated from the rhizosphere of F-soil and inoculated in a combination or singly in the SCN-infested soil. After repeated screenings, five strains were selected since the SCN density was consistently decreased by them. Sequence analysis showed that they were closest to <i<Clonostachys rosea</i<, <i<Aspergillus niger</i<, <i<Aspergillus fumigatus</i<, <i<Fusarium oxysporum,</i< and <i<Cylindrodendrum alicantinum</i<. All five strains significantly reduced the mobility of second-stage juveniles (J2). Further, <i<C. rosea</i< a2, <i<A. niger</i< a8, and <i<F. oxysporum</i< a25 significantly decreased hatching. Overall, the present study demonstrated that soil fungi played an important role in SCN suppression in F-soil. soybean cyst nematode (SCN) suppression disease-suppressive soils soil fungi Agriculture S Junnan Wu verfasserin aut Roland N. Perry verfasserin aut Koki Toyota verfasserin aut In Agronomy MDPI AG, 2012 13(2023), 11, p 2826 (DE-627)658000543 (DE-600)2607043-1 20734395 nnns volume:13 year:2023 number:11, p 2826 https://doi.org/10.3390/agronomy13112826 kostenfrei https://doaj.org/article/b42244d1703a4528b4f303ba591ea850 kostenfrei https://www.mdpi.com/2073-4395/13/11/2826 kostenfrei https://doaj.org/toc/2073-4395 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_24 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 13 2023 11, p 2826
allfieldsSound	10.3390/agronomy13112826 doi (DE-627)DOAJ101285868 (DE-599)DOAJb42244d1703a4528b4f303ba591ea850 DE-627 ger DE-627 rakwb eng Yanyan Yang verfasserin aut Evaluation of Soil Suppressiveness of Various Japanese Soils against the Soybean Cyst Nematode <i<Heterodera glycines</i< and Its Relation with the Soil Chemical and Biological Properties 2023 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier This study aimed to evaluate the suppressive potential of different soils on soybean cyst nematodes (SCN) and to estimate the suppressive mechanism. Fifteen soils (designated as soil A to O) from different agricultural fields with varying organic inputs were added with SCN-infested soil and grown with a green soybean variety. The SCN density in the soil at 6 weeks of soybean growth was markedly different depending on the soils used, indicating a different level of disease suppressiveness. No significant correlation was observed between the SCN density and any of the soil physicochemical and biological characteristics tested. Then, to estimate a suppression mechanism, F-soil that showed the lowest density of SCN was added to the SCN-infested soil with or without streptomycin to kill bacteria and grown with soybean. SCN density was not increased by the addition of streptomycin, indicating that soil bacteria may not be involved in the suppressiveness of F-soil. In total, 128 fungal strains were isolated from the rhizosphere of F-soil and inoculated in a combination or singly in the SCN-infested soil. After repeated screenings, five strains were selected since the SCN density was consistently decreased by them. Sequence analysis showed that they were closest to <i<Clonostachys rosea</i<, <i<Aspergillus niger</i<, <i<Aspergillus fumigatus</i<, <i<Fusarium oxysporum,</i< and <i<Cylindrodendrum alicantinum</i<. All five strains significantly reduced the mobility of second-stage juveniles (J2). Further, <i<C. rosea</i< a2, <i<A. niger</i< a8, and <i<F. oxysporum</i< a25 significantly decreased hatching. Overall, the present study demonstrated that soil fungi played an important role in SCN suppression in F-soil. soybean cyst nematode (SCN) suppression disease-suppressive soils soil fungi Agriculture S Junnan Wu verfasserin aut Roland N. Perry verfasserin aut Koki Toyota verfasserin aut In Agronomy MDPI AG, 2012 13(2023), 11, p 2826 (DE-627)658000543 (DE-600)2607043-1 20734395 nnns volume:13 year:2023 number:11, p 2826 https://doi.org/10.3390/agronomy13112826 kostenfrei https://doaj.org/article/b42244d1703a4528b4f303ba591ea850 kostenfrei https://www.mdpi.com/2073-4395/13/11/2826 kostenfrei https://doaj.org/toc/2073-4395 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_24 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 13 2023 11, p 2826
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author	Yanyan Yang
spellingShingle	Yanyan Yang misc soybean cyst nematode (SCN) suppression misc disease-suppressive soils misc soil fungi misc Agriculture misc S Evaluation of Soil Suppressiveness of Various Japanese Soils against the Soybean Cyst Nematode <i<Heterodera glycines</i< and Its Relation with the Soil Chemical and Biological Properties
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topic_title	Evaluation of Soil Suppressiveness of Various Japanese Soils against the Soybean Cyst Nematode <i<Heterodera glycines</i< and Its Relation with the Soil Chemical and Biological Properties soybean cyst nematode (SCN) suppression disease-suppressive soils soil fungi
topic	misc soybean cyst nematode (SCN) suppression misc disease-suppressive soils misc soil fungi misc Agriculture misc S
topic_unstemmed	misc soybean cyst nematode (SCN) suppression misc disease-suppressive soils misc soil fungi misc Agriculture misc S
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title	Evaluation of Soil Suppressiveness of Various Japanese Soils against the Soybean Cyst Nematode <i<Heterodera glycines</i< and Its Relation with the Soil Chemical and Biological Properties
ctrlnum	(DE-627)DOAJ101285868 (DE-599)DOAJb42244d1703a4528b4f303ba591ea850
title_full	Evaluation of Soil Suppressiveness of Various Japanese Soils against the Soybean Cyst Nematode <i<Heterodera glycines</i< and Its Relation with the Soil Chemical and Biological Properties
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author_browse	Yanyan Yang Junnan Wu Roland N. Perry Koki Toyota
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title_sort	evaluation of soil suppressiveness of various japanese soils against the soybean cyst nematode <i<heterodera glycines</i< and its relation with the soil chemical and biological properties
title_auth	Evaluation of Soil Suppressiveness of Various Japanese Soils against the Soybean Cyst Nematode <i<Heterodera glycines</i< and Its Relation with the Soil Chemical and Biological Properties
abstract	This study aimed to evaluate the suppressive potential of different soils on soybean cyst nematodes (SCN) and to estimate the suppressive mechanism. Fifteen soils (designated as soil A to O) from different agricultural fields with varying organic inputs were added with SCN-infested soil and grown with a green soybean variety. The SCN density in the soil at 6 weeks of soybean growth was markedly different depending on the soils used, indicating a different level of disease suppressiveness. No significant correlation was observed between the SCN density and any of the soil physicochemical and biological characteristics tested. Then, to estimate a suppression mechanism, F-soil that showed the lowest density of SCN was added to the SCN-infested soil with or without streptomycin to kill bacteria and grown with soybean. SCN density was not increased by the addition of streptomycin, indicating that soil bacteria may not be involved in the suppressiveness of F-soil. In total, 128 fungal strains were isolated from the rhizosphere of F-soil and inoculated in a combination or singly in the SCN-infested soil. After repeated screenings, five strains were selected since the SCN density was consistently decreased by them. Sequence analysis showed that they were closest to <i<Clonostachys rosea</i<, <i<Aspergillus niger</i<, <i<Aspergillus fumigatus</i<, <i<Fusarium oxysporum,</i< and <i<Cylindrodendrum alicantinum</i<. All five strains significantly reduced the mobility of second-stage juveniles (J2). Further, <i<C. rosea</i< a2, <i<A. niger</i< a8, and <i<F. oxysporum</i< a25 significantly decreased hatching. Overall, the present study demonstrated that soil fungi played an important role in SCN suppression in F-soil.
abstractGer	This study aimed to evaluate the suppressive potential of different soils on soybean cyst nematodes (SCN) and to estimate the suppressive mechanism. Fifteen soils (designated as soil A to O) from different agricultural fields with varying organic inputs were added with SCN-infested soil and grown with a green soybean variety. The SCN density in the soil at 6 weeks of soybean growth was markedly different depending on the soils used, indicating a different level of disease suppressiveness. No significant correlation was observed between the SCN density and any of the soil physicochemical and biological characteristics tested. Then, to estimate a suppression mechanism, F-soil that showed the lowest density of SCN was added to the SCN-infested soil with or without streptomycin to kill bacteria and grown with soybean. SCN density was not increased by the addition of streptomycin, indicating that soil bacteria may not be involved in the suppressiveness of F-soil. In total, 128 fungal strains were isolated from the rhizosphere of F-soil and inoculated in a combination or singly in the SCN-infested soil. After repeated screenings, five strains were selected since the SCN density was consistently decreased by them. Sequence analysis showed that they were closest to <i<Clonostachys rosea</i<, <i<Aspergillus niger</i<, <i<Aspergillus fumigatus</i<, <i<Fusarium oxysporum,</i< and <i<Cylindrodendrum alicantinum</i<. All five strains significantly reduced the mobility of second-stage juveniles (J2). Further, <i<C. rosea</i< a2, <i<A. niger</i< a8, and <i<F. oxysporum</i< a25 significantly decreased hatching. Overall, the present study demonstrated that soil fungi played an important role in SCN suppression in F-soil.
abstract_unstemmed	This study aimed to evaluate the suppressive potential of different soils on soybean cyst nematodes (SCN) and to estimate the suppressive mechanism. Fifteen soils (designated as soil A to O) from different agricultural fields with varying organic inputs were added with SCN-infested soil and grown with a green soybean variety. The SCN density in the soil at 6 weeks of soybean growth was markedly different depending on the soils used, indicating a different level of disease suppressiveness. No significant correlation was observed between the SCN density and any of the soil physicochemical and biological characteristics tested. Then, to estimate a suppression mechanism, F-soil that showed the lowest density of SCN was added to the SCN-infested soil with or without streptomycin to kill bacteria and grown with soybean. SCN density was not increased by the addition of streptomycin, indicating that soil bacteria may not be involved in the suppressiveness of F-soil. In total, 128 fungal strains were isolated from the rhizosphere of F-soil and inoculated in a combination or singly in the SCN-infested soil. After repeated screenings, five strains were selected since the SCN density was consistently decreased by them. Sequence analysis showed that they were closest to <i<Clonostachys rosea</i<, <i<Aspergillus niger</i<, <i<Aspergillus fumigatus</i<, <i<Fusarium oxysporum,</i< and <i<Cylindrodendrum alicantinum</i<. All five strains significantly reduced the mobility of second-stage juveniles (J2). Further, <i<C. rosea</i< a2, <i<A. niger</i< a8, and <i<F. oxysporum</i< a25 significantly decreased hatching. Overall, the present study demonstrated that soil fungi played an important role in SCN suppression in F-soil.
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container_issue	11, p 2826
title_short	Evaluation of Soil Suppressiveness of Various Japanese Soils against the Soybean Cyst Nematode <i<Heterodera glycines</i< and Its Relation with the Soil Chemical and Biological Properties
url	https://doi.org/10.3390/agronomy13112826 https://doaj.org/article/b42244d1703a4528b4f303ba591ea850 https://www.mdpi.com/2073-4395/13/11/2826 https://doaj.org/toc/2073-4395
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After repeated screenings, five strains were selected since the SCN density was consistently decreased by them. Sequence analysis showed that they were closest to <i<Clonostachys rosea</i<, <i<Aspergillus niger</i<, <i<Aspergillus fumigatus</i<, <i<Fusarium oxysporum,</i< and <i<Cylindrodendrum alicantinum</i<. All five strains significantly reduced the mobility of second-stage juveniles (J2). Further, <i<C. rosea</i< a2, <i<A. niger</i< a8, and <i<F. oxysporum</i< a25 significantly decreased hatching. 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Evaluation of Soil Suppressiveness of Various Japanese Soils against the Soybean Cyst Nematode <i<Heterodera glycines</i< and Its Relation with the Soil Chemical and Biological Properties

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