Suppression of Powdery Mildew Using the Water Extract of Xylogone ganodermophthora and Aqueous Potassium Phosphonate Solution on Watermelon under Greenhouse Conditions
Xylogone ganodermophthora (Xg) is an ascomycetous fungus that causes yellow rot on cultivated Ganoderma lucidum. Previously, we reported in vitro antifungal activities of a Xg culture extract against several watermelon pathogens. In 2014, we conducted greenhouse experiments to evaluate the control e...
| Main Authors: | , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Hanrimwon Publishing Company
2015-12-01
|
| Series: | Research in Plant Disease |
| Subjects: | |
| Online Access: | http://www.online-rpd.org/journal/view.html?uid=1470&&vmd=Full |
| _version_ | 1811247360982908928 |
|---|---|
| author | Hyo-Jung Kang Youngsang Kim Taeil Kim Taek Ku Jeong Chong U Han Sang Young Nam Ik-Jei Kim |
| author_facet | Hyo-Jung Kang Youngsang Kim Taeil Kim Taek Ku Jeong Chong U Han Sang Young Nam Ik-Jei Kim |
| author_sort | Hyo-Jung Kang |
| collection | DOAJ |
| description | Xylogone ganodermophthora (Xg) is an ascomycetous fungus that causes yellow rot on cultivated Ganoderma lucidum. Previously, we reported in vitro antifungal activities of a Xg culture extract against several watermelon pathogens. In 2014, we conducted greenhouse experiments to evaluate the control efficacy of a water extract of cultured Xg on watermelon powdery mildew (WPM). The test material (stock solution, ca. 4,000 µg/ml) was prepared by an autoclaved Xg culture in water at a ratio of 800 g of culture per 6 liter of water, and then filtering it through filter paper. Six foliar applications of the solutions (diluted 100- and 1,000-fold) significantly suppressed the formation of conidiophores and conidia. The inhibitory effect of aqueous potassium phosphonate solution on the disease and its phytotoxicity was tested. Phytotoxicity on watermelon plants was observed at concentrations of 1,000 and 2,000 µg/ml as irregular brownish spots. The control efficacies against WPM were 91.9% at 2,000 µg/ml, 64.9% at 1,000 µg/ml, and 62.2% at 500 µg/ml. |
| first_indexed | 2024-04-12T15:08:25Z |
| format | Article |
| id | doaj.art-341b34ac6efe4095baff6be554c36135 |
| institution | Directory Open Access Journal |
| issn | 1598-2262 2233-9191 |
| language | English |
| last_indexed | 2024-04-12T15:08:25Z |
| publishDate | 2015-12-01 |
| publisher | Hanrimwon Publishing Company |
| record_format | Article |
| series | Research in Plant Disease |
| spelling | doaj.art-341b34ac6efe4095baff6be554c361352022-12-22T03:27:51ZengHanrimwon Publishing CompanyResearch in Plant Disease1598-22622233-91912015-12-01214309314http://dx.doi.org/10.5423/RPD.2015.21.4.309Suppression of Powdery Mildew Using the Water Extract of Xylogone ganodermophthora and Aqueous Potassium Phosphonate Solution on Watermelon under Greenhouse ConditionsHyo-Jung Kang0Youngsang Kim1Taeil Kim2Taek Ku Jeong3Chong U Han4Sang Young Nam5Ik-Jei Kim6Chungcheongbuk-do Agricultural Research and Extension Services, Eumsung 369-824, KoreaChungcheongbuk-do Agricultural Research and Extension Services, Eumsung 369-824, KoreaChungcheongbuk-do Agricultural Research and Extension Services, Eumsung 369-824, KoreaChungcheongbuk-do Agricultural Research and Extension Services, Eumsung 369-824, KoreaChungcheongbuk-do Agricultural Research and Extension Services, Eumsung 369-824, KoreaChungcheongbuk-do Agricultural Research and Extension Services, Eumsung 369-824, KoreaChungcheongbuk-do Agricultural Research and Extension Services, Eumsung 369-824, KoreaXylogone ganodermophthora (Xg) is an ascomycetous fungus that causes yellow rot on cultivated Ganoderma lucidum. Previously, we reported in vitro antifungal activities of a Xg culture extract against several watermelon pathogens. In 2014, we conducted greenhouse experiments to evaluate the control efficacy of a water extract of cultured Xg on watermelon powdery mildew (WPM). The test material (stock solution, ca. 4,000 µg/ml) was prepared by an autoclaved Xg culture in water at a ratio of 800 g of culture per 6 liter of water, and then filtering it through filter paper. Six foliar applications of the solutions (diluted 100- and 1,000-fold) significantly suppressed the formation of conidiophores and conidia. The inhibitory effect of aqueous potassium phosphonate solution on the disease and its phytotoxicity was tested. Phytotoxicity on watermelon plants was observed at concentrations of 1,000 and 2,000 µg/ml as irregular brownish spots. The control efficacies against WPM were 91.9% at 2,000 µg/ml, 64.9% at 1,000 µg/ml, and 62.2% at 500 µg/ml.http://www.online-rpd.org/journal/view.html?uid=1470&&vmd=FullControlFungicidePowdery mildewWatermelon |
| spellingShingle | Hyo-Jung Kang Youngsang Kim Taeil Kim Taek Ku Jeong Chong U Han Sang Young Nam Ik-Jei Kim Suppression of Powdery Mildew Using the Water Extract of Xylogone ganodermophthora and Aqueous Potassium Phosphonate Solution on Watermelon under Greenhouse Conditions Research in Plant Disease Control Fungicide Powdery mildew Watermelon |
| title | Suppression of Powdery Mildew Using the Water Extract of Xylogone ganodermophthora and Aqueous Potassium Phosphonate Solution on Watermelon under Greenhouse Conditions |
| title_full | Suppression of Powdery Mildew Using the Water Extract of Xylogone ganodermophthora and Aqueous Potassium Phosphonate Solution on Watermelon under Greenhouse Conditions |
| title_fullStr | Suppression of Powdery Mildew Using the Water Extract of Xylogone ganodermophthora and Aqueous Potassium Phosphonate Solution on Watermelon under Greenhouse Conditions |
| title_full_unstemmed | Suppression of Powdery Mildew Using the Water Extract of Xylogone ganodermophthora and Aqueous Potassium Phosphonate Solution on Watermelon under Greenhouse Conditions |
| title_short | Suppression of Powdery Mildew Using the Water Extract of Xylogone ganodermophthora and Aqueous Potassium Phosphonate Solution on Watermelon under Greenhouse Conditions |
| title_sort | suppression of powdery mildew using the water extract of xylogone ganodermophthora and aqueous potassium phosphonate solution on watermelon under greenhouse conditions |
| topic | Control Fungicide Powdery mildew Watermelon |
| url | http://www.online-rpd.org/journal/view.html?uid=1470&&vmd=Full |
| work_keys_str_mv | AT hyojungkang suppressionofpowderymildewusingthewaterextractofxylogoneganodermophthoraandaqueouspotassiumphosphonatesolutiononwatermelonundergreenhouseconditions AT youngsangkim suppressionofpowderymildewusingthewaterextractofxylogoneganodermophthoraandaqueouspotassiumphosphonatesolutiononwatermelonundergreenhouseconditions AT taeilkim suppressionofpowderymildewusingthewaterextractofxylogoneganodermophthoraandaqueouspotassiumphosphonatesolutiononwatermelonundergreenhouseconditions AT taekkujeong suppressionofpowderymildewusingthewaterextractofxylogoneganodermophthoraandaqueouspotassiumphosphonatesolutiononwatermelonundergreenhouseconditions AT chonguhan suppressionofpowderymildewusingthewaterextractofxylogoneganodermophthoraandaqueouspotassiumphosphonatesolutiononwatermelonundergreenhouseconditions AT sangyoungnam suppressionofpowderymildewusingthewaterextractofxylogoneganodermophthoraandaqueouspotassiumphosphonatesolutiononwatermelonundergreenhouseconditions AT ikjeikim suppressionofpowderymildewusingthewaterextractofxylogoneganodermophthoraandaqueouspotassiumphosphonatesolutiononwatermelonundergreenhouseconditions |