Article
Plant Sciences
Ueder P. Lopes, Galvin Alonzo, Rodrigo B. Onofre, Paulo P. Mello, David M. Gadoury, Gary E. Vallad, Natalia A. Peres
Summary: Ultraviolet light at wavelengths from 254 to 283 nm can effectively suppress powdery mildews in crops, including cucurbits. This study evaluated the use of UV-C in cantaloupe fields for powdery mildew suppression and its effects on plant growth and yield. The results showed that UV-C reduced powdery mildew development without damaging the plants, and the most effective control was achieved with a dose of 200 J/m(2) applied twice every week. This promising technology can be used commercially to suppress powdery mildew on cantaloupe in various growing systems.
Article
Agronomy
Katherine E. M. Hendricks, Pamela D. Roberts
Summary: Cucurbit powdery mildew caused by Podosphaera xanthii is a significant problem for cucurbit production worldwide. In the United States, the fungus has developed resistance to several fungicides. This study aimed to evaluate the sensitivity of locally obtained isolates in Florida to commercially available fungicides under laboratory, greenhouse, and field conditions. The results showed that some fungicides provided adequate control of powdery mildew, but none were able to completely prevent the establishment and sporulation of P. xanthii. Further research is necessary to monitor fungicide resistance, establish effective concentrations, and optimize application regimes.
Article
Green & Sustainable Science & Technology
Michel Frem, Franco Nigro, Serge Medawar, Maroun El Moujabber
Summary: This study evaluates the effectiveness of five safe biological treatments in managing powdery mildew disease in Lebanese squash. It found that plants treated with sodium bicarbonate and garlic extract had the lowest incidence and severity of the disease, while compost tea proved to be the least effective.
Article
Microbiology
Alejandra J. Porteous-Alvarez, M. Mercedes Maldonado-Gonzalez, Sara Mayo-Prieto, Alicia Lorenzana, Ana Paniagua-Garcia, Pedro A. Casquero
Summary: This study monitored powdery mildew control on hops, comparing different fungicide strategies. Organic and integrated disease management-based treatments showed significant reductions in powdery mildew on leaves and cones, while conventional treatments also reduced infection on leaves and cones, increasing cone quantity and quality.
Article
Plant Sciences
Belachew Asalf, Rodrigo B. Onofre, David M. Gadoury, Natalia A. Peres, Arne Stensvand
Summary: This study found that using pulsed water mist can effectively suppress powdery mildew in strawberry, with similar effect to multiple fungicide treatments. Additionally, rapid drying of the water mist can effectively suppress powdery mildew without increasing other fungal pathogens that might benefit from water films.
Article
Agronomy
Yasser S. Mostafa, Mohamed Hashem, Ali M. Alshehri, Saad Alamri, Ebrahem M. Eid, El-Sayed H. E. Ziedan, Sulaiman A. Alrumman
Summary: The research showed that essential oils significantly reduced the incidence of cucumber powdery mildew, while also promoting plant growth and increasing yield. It is recommended to use essential oils in appropriate doses for plant protection, avoiding overdosing to prevent adverse effects.
Article
Biochemistry & Molecular Biology
Jie Xiao, Yali Li, Byoung Ryong Jeong
Summary: This study aimed to investigate the optimal application method of silicon (Si) before cutting propagation to enhance the resistance to powdery mildew in strawberry daughter plants. The results showed that Si application promoted the growth of daughter plants and increased the content of phosphorus, potassium, and magnesium. Si treatment reduced powdery mildew damage by increasing proline content and suppressing reactive oxygen species. Moreover, Si increased the expression of resistance-gene and decreased the expression of susceptibility-gene of strawberry. Therefore, direct foliar Si spray to the daughter plants before cutting propagation is recommended to increase their resistance to powdery mildew.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Agriculture, Multidisciplinary
Pooja Bharmera, S. K. Gupta, Durga Parsad, Monica Sharma
Summary: The study revealed the presence of cleistothecia on summer squash in Himachal Pradesh, India, along with anamorphic stages. The development of powdery mildew disease was significantly favored at moderate temperature and high relative humidity. Maximum conidial germination was observed at 25 degrees temperature and 100% relative humidity.
INDIAN JOURNAL OF AGRICULTURAL SCIENCES
(2021)
Article
Plant Sciences
Yigal Elad, Dor Barnea, Dalia Rav-David, Uri Yermiyahu
Summary: The study found that spraying CaCl2, MgCl2, KCl, and K2SO4 can reduce the occurrence of cucumber powdery mildew. There is a significant negative correlation between salt concentrations and disease severity. Chloride salts are more effective than sulfate salts. Cucumbers at different growth stages have different nutrient requirements, and spraying treatments are more effective than fertigation treatments.
Article
Plant Sciences
Briana J. Claassen, Sierra N. Wolfenbarger, David H. Gent
Summary: Understanding the physical mode of action of fungicides can improve their effectiveness in controlling diseases. Greenhouse and field studies on hop powdery mildew show that preventive applications of fluopyram and flutriafol are most effective, while fluopyram or fluopyram + trifloxystrobin can suppress mildew development regardless of application timing.
Article
Forestry
Xinbo Ma, Zhanbin Wang, Run Liu, Yibing Jiang
Summary: By examining the microbial diversity, MDA concentrations, and antioxidant enzyme activities of peony leaves infected with powdery mildew, we found that MDA content increased with the severity of infection, and antioxidant enzyme activity initially increased and then declined. The fungal community diversity decreased following the onset of powdery mildew, while there was no significant change in bacterial communities. Some critical microbial taxa were found to be associated with the occurrence of powdery mildew.
JOURNAL OF FORESTRY RESEARCH
(2023)
Article
Plant Sciences
Wenrui Wang, Huagang He, Huiming Gao, Hongxing Xu, Wenyue Song, Xu Zhang, Lipei Zhang, Jiancheng Song, Cheng Liu, Kaichang Liu, Pengtao Ma
Summary: The Chinese wheat breeding line KN0816 possesses superior agronomic traits and resistance against powdery mildew due to the single dominant gene PmKN0816. This gene has been mapped to the Pm6 interval on chromosome arm 2BL and is expected to be a valuable asset in wheat breeding when transferred to different genetic backgrounds through marker-assisted selection.
Article
Plant Sciences
David M. M. Gadoury, Surya Sapkota, Lance Cadle-Davidson, Anna Underhill, Tyler McCann, Kaitlin M. M. Gold, Nikita Gambhir, David B. B. Combs
Summary: Nighttime applications of germicidal ultraviolet effectively suppressed three diseases of grapevine, including powdery mildew, downy mildew, and sour rot. UV-C light with a peak wavelength of 254 nm and a full width at half maximum (FWHM) of 5 nm strongly inhibited the germination of conidia of Erysiphe necator. Exposure to UV-C at a dose of 100 J/m(2) during darkness reduced infection and sporulation of Plasmopara viticola by over 70%.
Article
Agronomy
Eman Elagamey, Magdi A. E. Abdellatef, Maha S. A. Haridy, El-Sayed A. E. Abd El-aziz
Summary: This study evaluated the use of natural products as safe alternatives to fungicides for controlling cucumber powdery mildew and found that lemon oil, garlic oil, and Blight stop were effective in controlling the disease and improving the plant's physiological state.
EUROPEAN JOURNAL OF PLANT PATHOLOGY
(2023)
Article
Plant Sciences
Rodrigo B. Onofre, David M. Gadoury, Arne Stensvand, Andrew Bierman, Mark Rea, Natalia A. Peres
Summary: The study introduced an apparatus utilizing UV light for suppression of powdery mildew in strawberry production, which was evaluated in both commercial fields and research plots, showing consistent or better disease suppression compared to conventional fungicide spray programs.
Article
Plant Sciences
Cheng-Hua Huang, Rong-Tzong Tsai, Gary E. Vallad
JOURNAL OF PHYTOPATHOLOGY
(2016)
Article
Agriculture, Multidisciplinary
Shouan Zhang, Zelalem Mersha, Gary E. Vallad, Cheng-Hua Huang
PLANT PATHOLOGY JOURNAL
(2016)
Article
Agronomy
Cheng-Hua Huang, Gary E. Vallad
EUROPEAN JOURNAL OF PLANT PATHOLOGY
(2018)
Article
Agronomy
Ying-Tzu Li, San-Gwang Hwang, Yuh-Ming Huang, Cheng-Hua Huang
Article
Agronomy
Cheng-Hua Huang, Pamela D. Roberts, Liane R. Gale, Wade H. Elmer, Lawrence E. Datnoff
EUROPEAN JOURNAL OF PLANT PATHOLOGY
(2013)
Article
Plant Sciences
Cheng-Hua Huang, Gary E. Vallad, Heather Adkison, Carly Summers, Elaina Margenthaler, Christina Schneider, Jason Hong, Jeffrey B. Jones, Kevin Ong, David J. Norman
Article
Plant Sciences
Chenzhao Xie, Cheng-Hua Huang, Gary E. Vallad
Article
Agronomy
Yi-Chun Chien, Cheng-Hua Huang
EUROPEAN JOURNAL OF PLANT PATHOLOGY
(2020)
Article
Plant Sciences
Dumsane T. Matse, Cheng-Hua Huang, Yuh-Ming Huang, Ming-Yi Yen
JOURNAL OF PLANT NUTRITION
(2020)
Article
Plant Sciences
Dumsane Themba Matse, Cheng-Hua Huang, Yuh-Ming Huang, Ming-Yi Yen
JOURNAL OF PLANT NUTRITION
(2020)
Article
Agriculture, Multidisciplinary
Cheng-Huan Liu, Wanyi Siew, Yu-Ting Hung, Yu-Ti Jiang, Cheng-Hua Huang
Summary: This study revealed that the acdS gene in Pseudomonas azotoformans is associated with alleviating salt stress in tomato plants, with CHB 1107 WT showing greater growth promotion effects than CHB 1107 M under salt stress conditions. The loss of CHB 1107 M resulted in reduced uptake of K, Ca, and Mn in tomato plants.
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
(2021)
Article
Agronomy
Jia-Yang Su, Cheng-Huan Liu, Kimberly Tampus, Ya-Chi Lin, Cheng-Hua Huang
Summary: This study found that the application of manure compost can significantly increase the shoot dry weight of tomato plants, soil organic matter, and soil-exchangeable K and Mg. Moreover, it can also increase bacterial diversity and richness, and positively affect the relative abundance of Lysinibacillus, thereby promoting tomato growth.
Article
Biotechnology & Applied Microbiology
Syuan-Lu Chen, Meng-Ke Tsai, Yuh-Ming Huang, Cheng-Hua Huang
ANNALS OF MICROBIOLOGY
(2018)
Meeting Abstract
Plant Sciences
C. Xie, C. Huang, G. E. Vallad
Meeting Abstract
Plant Sciences
C. Huang