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Article

Bioactivity and Control Efficacy of the Novel Antibiotic Tetramycin against Various Kiwifruit Diseases

1
Department of Food and Medicine, Guizhou Vocational College of Agriculture, Qingzhen 551400, China
2
Research Center for Engineering Technology of Kiwifruit, Institute of Crop Protection, College of Agriculture, Guizhou University, Guiyang 550025, China
*
Author to whom correspondence should be addressed.
Academic Editor: Helena P. Felgueiras
Received: 2 February 2021 / Revised: 6 March 2021 / Accepted: 7 March 2021 / Published: 10 March 2021
Tetramycin, a novel polyene agriculture antibiotic, has excellent antimicrobial activity against many plant pathogens. In this study, the antimicrobial activities of tetramycin and conventional antibiotics on eight common pathogens and their field control efficacies against four serious diseases in kiwifruit were investigated. The results show that 0.3% tetramycin aqueous solutions (AS) exhibited the superior antibacterial and antifungal activity against Pseudomonas syringae pv. actinidiae, Pseudomonas fulva, Agrobacterium tumefaciens, Botryosphaeriadothidea, Phomopsis sp., Alternaria tenuissima, Armillariella mellea and Phytophthora cactorum of kiwifruit pathogens with EC50 values of 1.21, 1.24, 0.72, 0.14, 0.09, 0.16, 0.06 and 0.17 mg kg−1, respectively. These EC50 values of tetramycin were much higher than those of conventional kasugamycin, zhongshengmycin or polyoxin. Meanwhile, 0.3% tetramycin AS possessed the good field control efficacies for canker, soft rot, blossom blight and brown spot disease of kiwifruit with 74.45, 83.55, 84.74 and 89.62%. Moreover, 0.3% tetramycin AS application notably increased fruit resistance substances contents, activated fruit superoxide dismutase and polyphenoloxidase activities, as well as remarkably enhanced fruit growth, improved fruit quality and storability. This study highlights that tetramycin can be used as a preferred alternative to conventional antibiotics in kiwifruit production. View Full-Text
Keywords: tetramycin; antimicrobial activity; kiwifruit disease; conventional antibiotics; storage quality tetramycin; antimicrobial activity; kiwifruit disease; conventional antibiotics; storage quality
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MDPI and ACS Style

Wang, Q.; Zhang, C.; Long, Y.; Wu, X.; Su, Y.; Lei, Y.; Ai, Q. Bioactivity and Control Efficacy of the Novel Antibiotic Tetramycin against Various Kiwifruit Diseases. Antibiotics 2021, 10, 289. https://0-doi-org.brum.beds.ac.uk/10.3390/antibiotics10030289

AMA Style

Wang Q, Zhang C, Long Y, Wu X, Su Y, Lei Y, Ai Q. Bioactivity and Control Efficacy of the Novel Antibiotic Tetramycin against Various Kiwifruit Diseases. Antibiotics. 2021; 10(3):289. https://0-doi-org.brum.beds.ac.uk/10.3390/antibiotics10030289

Chicago/Turabian Style

Wang, Qiuping, Cheng Zhang, Youhua Long, Xiaomao Wu, Yue Su, Yang Lei, and Qiang Ai. 2021. "Bioactivity and Control Efficacy of the Novel Antibiotic Tetramycin against Various Kiwifruit Diseases" Antibiotics 10, no. 3: 289. https://0-doi-org.brum.beds.ac.uk/10.3390/antibiotics10030289

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