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由 亚种引起的柑橘溃疡病的生物防治 由 进行。 （这段英文原文似乎不完整，表述不太清晰准确）

Biocontrol of citrus bacterial canker caused by subsp. by .

作者信息

Rabbee Muhammad Fazle, Islam Nurul, Baek Kwang-Hyun

机构信息

Department of Biotechnology, Yeungnam University, Gyeongsan, Gyeongbuk 38541, Republic of Korea.

Soil Resource Development Institute, Regional Office, Rajshahi 6000, Bangladesh.

出版信息

Saudi J Biol Sci. 2022 Apr;29(4):2363-2371. doi: 10.1016/j.sjbs.2021.12.005. Epub 2021 Dec 10.

DOI:10.1016/j.sjbs.2021.12.005
PMID:35531204
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9072923/
Abstract

Microorganisms with biocontrol capabilities against plant pathogens are considered as one of the most promising approaches for healthy crop management. In this study, ethyl acetate extracts of 25 strains were investigated for their antagonistic effect on subsp. (), which causes the citrus bacterial canker (CBC) disease. Among them, 21 strains exerted antibacterial activity against wild-type strains Based on the strength of the antibacterial activity, nine strains were selected for 16S rRNA analysis. 16S rRNA sequence homology revealed that several strains were closely related to . , where strains with no antibacterial activity grouped as the soil-associated community of . . . Bv-21 exhibited the highest antibacterial activity against wild type and streptomycin resistant with inhibition zones of 22.91 ± 0.45 and 20.28 ± 0.53, respectively. Furthermore, . Bv-21 strain was tested for biocontrol activity against a streptomycin-resistant M4 in detached susceptible citrus leaves. The strain reduced the incidence of CBC by 26.30% and pathogen density of M4 by 81.68% over control. The results of the study strongly suggest that . can be used as an effective and eco-friendly biocontrol agent either by itself or as an active compound, against both, the wild-type and streptomycin-resistant .

摘要

具有对植物病原体进行生物防治能力的微生物被认为是健康作物管理最有前景的方法之一。在本研究中，对25个菌株的乙酸乙酯提取物对引起柑橘溃疡病（CBC）的野油菜黄单胞菌柑橘致病变种（Xanthomonas citri subsp. citri）的拮抗作用进行了研究。其中，21个菌株对野生型菌株具有抗菌活性。基于抗菌活性的强度，选择了9个菌株进行16S rRNA分析。16S rRNA序列同源性显示，几个菌株与野油菜黄单胞菌密切相关。无抗菌活性的菌株归为野油菜黄单胞菌的土壤相关群落。Bv - 21对野生型和链霉素抗性菌株表现出最高的抗菌活性，抑菌圈分别为22.91±0.45和20.28±0.53。此外，在离体易感柑橘叶片上测试了Bv - 21菌株对链霉素抗性M4的生物防治活性。与对照相比，该菌株使柑橘溃疡病的发病率降低了26.30%，M4的病原菌密度降低了81.68%。研究结果强烈表明，Bv - 21本身或作为一种活性化合物，可作为一种有效且环保的生物防治剂，对抗野生型和链霉素抗性的野油菜黄单胞菌柑橘致病变种。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ff21/9072923/6ef45922346b/gr4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ff21/9072923/a32088872496/gr1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ff21/9072923/717496282a88/gr2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ff21/9072923/fe5d56e16bdc/gr3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ff21/9072923/6ef45922346b/gr4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ff21/9072923/a32088872496/gr1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ff21/9072923/717496282a88/gr2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ff21/9072923/fe5d56e16bdc/gr3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ff21/9072923/6ef45922346b/gr4.jpg

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