1
|
Liao TZ, Chen YH, Tsai JN, Chao C, Huang TP, Hong CF, Wu ZC, Tsai IJ, Lee HH, Klopfenstein NB, Kim MS, Stewart JE, Atibalentja N, Brooks FE, Cannon P, Mohd Farid A, Hattori T, Kwan HS, Lam YCR, Ota Y, Sahashi N, Schlub RL, Shuey LS, Tang AMC, Chung CL. Translocation of fungicides and their efficacy in controlling Phellinus noxius, the cause of brown root rot disease. Plant Dis 2022. [PMID: 36428260 DOI: 10.1094/pdis-06-22-1285-re] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Brown root rot disease (BRRD), caused by Phellinus noxius, is an important tree disease in tropical/subtropical areas. To improve chemical control of BRRD and deter emergence of fungicide resistance in P. noxius, this study investigated control efficacies and systemic activities of fungicides with different modes of action. Fourteen fungicides with 11 different modes of action were tested for inhibitory effects in vitro on 39 P. noxius isolates from Taiwan, Hong Kong, Malaysia, Australia, and Pacific Islands. Cyproconazole, epoxiconazole, and tebuconazole (FRAC 3, target-site G1) inhibited colony growth of P. noxius by 99.9 to 100% at 10 ppm and 97.7 to 99.8% at 1 ppm. The other effective fungicide was cyprodinil + fludioxonil (FRAC 9 + 12, target-site D1 + E2), which showed growth inhibition of 96.9% at 10 ppm and 88.6% at 1 ppm. Acropetal translocation of six selected fungicides was evaluated in bishop wood (Bischofia javanica) seedlings by immersion of the root tips in 100 ppm of each fungicide, followed by liquid or gas chromatography tandem-mass spectrometry analyses of consecutive segments of root, stem, and leaf tissues at 7- and 21-days post-treatment. Bi-directional translocation of the fungicides was also evaluated by stem injection of fungicide solutions. Cyproconazole and tebuconazole were the most readily absorbed by roots and efficiently transported acropetally. Greenhouse experiments suggested that cyproconazole, tebuconazole, and epoxiconazole have a slightly higher potential for controlling BRRD than mepronil, prochloraz, and cyprodinil + fludioxonil. Because all tested fungicides lacked basipetal translocation, soil drenching should be considered instead of trunk injection for their use in BRRD control.
Collapse
Affiliation(s)
- Ting-Zhi Liao
- National Taiwan University, 33561, Master Program for Plant Medicine, Taipei, Taiwan;
| | - Yu-Hsuan Chen
- National Chung Hsing University, 34916, Pesticide Residue Analysis Center, Taichung, Taiwan
- National Chung Hsing University, 34916, Department of Plant Pathology, Taichung, Taiwan;
| | - Jyh-Nong Tsai
- Taiwan Agricultural Research Institute, 56091, Plant Pathology, Taichung, Taiwan;
| | - Chieh Chao
- National Chung Hsing University, 34916, Pesticide Residue Analysis Center, Taichung, Taiwan;
| | - Tzu-Pi Huang
- National Chung Hsing University, 34916, Pesticide Residue Analysis Center, Taichung, Taiwan
- National Chung Hsing University, 34916, Plant Pathology, Taichung, Taiwan;
| | - Cheng-Fang Hong
- National Chung Hsing University, 34916, Pesticide Residue Analysis Center, Taichung, Taiwan
- National Chung Hsing University, 34916, Plant Pathology, Taichung, Taiwan;
| | - Zong-Chi Wu
- National Taiwan University, 33561, Plant Pathology and Microbiology, Taipei, Taiwan;
| | - Isheng Jason Tsai
- Academia Sinica, 38017, Biodiversity Research Center, Taipei, Taiwan;
| | - Hsin-Han Lee
- Academia Sinica, 38017, Biodiversity Research Center, Taipei, Taiwan;
| | - Ned Brian Klopfenstein
- USDA Forest Service Rocky Mountain Research Station, 116528, Fort Collins, Colorado, United States;
| | - Mee-Sook Kim
- USDA Forest Service Pacific Northwest Research Station, 170428, Portland, Oregon, United States;
| | - Jane E Stewart
- Colorado State University, 3447, Department of Agricultural Biology, 1177 Campus Delivery, Fort Collins, Colorado, United States, 80523;
| | - Ndeme Atibalentja
- American Samoa Community College, 52639, Division of Agriculture, Community, and Natural Resources, 5319 College Road, Pago Pago, American Samoa, 96799;
| | - Fred E Brooks
- 1961 Westwood Pl., Pomona, California, United States;
| | - Phil Cannon
- USDA Forest Service Region 5, 124309, 1323 Club Drive, Vallejo, CA 94592, Vallejo, California, United States, 94592-0000;
| | - Ahmad Mohd Farid
- Forest Research Institute Malaysia, 69803, Mycology and Pathology Branch, Forest Biodiversity Division, Kepong, Selangor Darul Ehsan, Malaysia;
| | - Tsutomu Hattori
- Forestry and Forest Products Research Institute, 57880, Tsukuba, Ibaraki, Japan;
| | - Hoi-Shan Kwan
- The Chinese University of Hong Kong, 26451, School of Life Sciences, Hong Kong, Hong Kong;
| | - Yau-Ching Regent Lam
- The Chinese University of Hong Kong, 26451, School of Life Sciences, Hong Kong, Hong Kong
- Muni Arborist Limited, Hong Kong, Hong Kong;
| | - Yuko Ota
- Nihon University College of Bioresource Sciences Graduate School of Bioresource Sciences, 73661, Fujisawa, Kanagawa, Japan;
| | - Norio Sahashi
- Forestry and Forest Products Research Institute, 57880, Department of Forest Microbiology, Tsukuba, Ibaraki, Japan;
| | - Robert L Schlub
- University of Guam, 5305, Cooperative Extension and Outreach, Mangilao, Guam;
| | - Louise S Shuey
- Queensland Department of Agriculture and Fisheries, 1962, Brisbane, Queensland, Australia;
| | - Alvin M C Tang
- Muni Arborist Limited, Hong Kong, Hong Kong
- Hong Kong Baptist University, 26679, Division of Applied Science, College of International Education, School of Continuing Education, Hong Kong, Hong Kong;
| | - Chia-Lin Chung
- National Taiwan University, 33561, Plant Pathology and Microbiology, Room 303, The First Hall, No. 1, Sec. 4, Roosevelt Road, Taipei, Taiwan, 10617;
| |
Collapse
|