Activity of fungal culture filtrates against soybean cyst nematode and root-knot nematode egg hatch and juvenile motility
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Abstract
Fungi were isolated from soybean cyst nematode (SCN, Heterodera glycines) eggs collected in China, and 253 fungal isolates were assayed for production of compounds active against SCN and root-knot nematode (RKN, Meloidogyne incognita). Fungal isolates were grown for 3 and 7 days in potato dextrose broth (PDB), the culture broths were sterile-filtered to remove fungal biomass, and the filtrates were placed into 24-well plates to test for effects on egg hatch and juvenile motility. Meloidogyne incognita egg hatch ranged from 2 to 121% of hatch in PDB controls and H. glycines hatch from 15 to 224%. Activities of filtrates harvested after 3 and 7 days were significantly correlated. Only four isolates produced filtrates that significantly inhibited juvenile motility of SCN, RKN or both nematodes. This study identified fungal isolates capable of producing compounds active against these nematodes, and demonstrated that there was a low correlation in activity against SCN and RKN. The active fungal isolates are candidates for studies on identification of potential nematicides.
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| All Time | Past 365 days | Past 30 Days | |
|---|---|---|---|
| Abstract Views | 1641 | 222 | 22 |
| Full Text Views | 258 | 52 | 2 |
| PDF Views & Downloads | 136 | 22 | 4 |
Activity of fungal culture filtrates against soybean cyst nematode and root-knot nematode egg hatch and juvenile motility
In: NematologySearch for other papers by Susan Meyer in
Current site
Google Scholar
PubMed
Search for other papers by Robin Huettel in
Current site
Google Scholar
PubMed
Search for other papers by Xing Zhong Liu in
Current site
Google Scholar
PubMed
Search for other papers by Richard Humber in
Current site
Google Scholar
PubMed
Search for other papers by Jean Juba in
Current site
Google Scholar
PubMed
Search for other papers by James Nitao in
Current site
Google Scholar
PubMed
Abstract
Fungi were isolated from soybean cyst nematode (SCN, Heterodera glycines) eggs collected in China, and 253 fungal isolates were assayed for production of compounds active against SCN and root-knot nematode (RKN, Meloidogyne incognita). Fungal isolates were grown for 3 and 7 days in potato dextrose broth (PDB), the culture broths were sterile-filtered to remove fungal biomass, and the filtrates were placed into 24-well plates to test for effects on egg hatch and juvenile motility. Meloidogyne incognita egg hatch ranged from 2 to 121% of hatch in PDB controls and H. glycines hatch from 15 to 224%. Activities of filtrates harvested after 3 and 7 days were significantly correlated. Only four isolates produced filtrates that significantly inhibited juvenile motility of SCN, RKN or both nematodes. This study identified fungal isolates capable of producing compounds active against these nematodes, and demonstrated that there was a low correlation in activity against SCN and RKN. The active fungal isolates are candidates for studies on identification of potential nematicides.
| All Time | Past 365 days | Past 30 Days | |
|---|---|---|---|
| Abstract Views | 1641 | 222 | 22 |
| Full Text Views | 258 | 52 | 2 |
| PDF Views & Downloads | 136 | 22 | 4 |
