Acta Horticulturae Sinica ›› 2026, Vol. 53 ›› Issue (5): 1521-1534.doi: 10.16420/j.issn.0513-353x.2025-0286
• Plant Protection • Previous Articles Next Articles
YANG Jiani, MA Qiaonü, GU Xin*(
), JIANG Tong, SU Xiaofen
Received:2025-04-01
Revised:2025-11-06
Online:2026-05-25
Published:2026-05-26
Contact:
GU Xin
YANG Jiani, MA Qiaonü, GU Xin, JIANG Tong, SU Xiaofen. Screening of Biocontrol Bacteria Against Fusarium Wilt in Watermelon and Study on Their Biocontrol Mechanisms[J]. Acta Horticulturae Sinica, 2026, 53(5): 1521-1534.
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URL: https://www.ahs.ac.cn/EN/10.16420/j.issn.0513-353x.2025-0286
| 菌株 Strain | 菌落直径/mm FON colony diameter | 抑菌率/% Inhibition rate |
|---|---|---|
| 对照Control | 62.04 ± 0.19 a | — |
| PJ3 | 13.38 ± 2.19 h | 78.40 ± 3.55 a |
| JB | 14.86 ± 0.21 gh | 76.03 ± 0.32 ab |
| XG2 | 15.59 ± 0.28 fgh | 74.87 ± 0.48 abc |
| MX | 21.03 ± 1.20 de | 66.10 ± 1.94 de |
| SL1 | 19.11 ± 0.60 def | 69.23 ± 0.97 cde |
| MD-1 | 20.85 ± 0.12 de | 66.40 ± 0.17 de |
| XB-3 | 17.63 ± 3.04 fg | 71.57 ± 4.91 cde |
| T1-4 | 22.45 ± 0.32 cd | 63.83 ± 0.52 ef |
| PJ16 | 22.79 ± 0.20 cd | 63.27 ± 0.32 ef |
| J4-2 | 25.16 ± 0.24 bc | 59.47 ± 0.38 fg |
| TYC-4 | 28.72 ± 1.10 b | 53.70 ± 1.79 g |
Table 1 Effect of different biocontrol bacteria on FON
| 菌株 Strain | 菌落直径/mm FON colony diameter | 抑菌率/% Inhibition rate |
|---|---|---|
| 对照Control | 62.04 ± 0.19 a | — |
| PJ3 | 13.38 ± 2.19 h | 78.40 ± 3.55 a |
| JB | 14.86 ± 0.21 gh | 76.03 ± 0.32 ab |
| XG2 | 15.59 ± 0.28 fgh | 74.87 ± 0.48 abc |
| MX | 21.03 ± 1.20 de | 66.10 ± 1.94 de |
| SL1 | 19.11 ± 0.60 def | 69.23 ± 0.97 cde |
| MD-1 | 20.85 ± 0.12 de | 66.40 ± 0.17 de |
| XB-3 | 17.63 ± 3.04 fg | 71.57 ± 4.91 cde |
| T1-4 | 22.45 ± 0.32 cd | 63.83 ± 0.52 ef |
| PJ16 | 22.79 ± 0.20 cd | 63.27 ± 0.32 ef |
| J4-2 | 25.16 ± 0.24 bc | 59.47 ± 0.38 fg |
| TYC-4 | 28.72 ± 1.10 b | 53.70 ± 1.79 g |
| 菌株 Strain | FON菌落直径/mm FON diameter | 抑菌率/% Inhibition rate |
|---|---|---|
| 对照Control | 52.74 ± 0.37 a | / |
| PJ3/HY5 | 10.56 ± 0.61 d | 79.90 ± 1.15 a |
| PJ3 | 15.56 ± 0.56 c | 70.37 ± 1.06 b |
| HY5 | 18.36 ± 1.24 b | 65.05 ± 2.35 b |
Table 2 Inhibition rate of compound bacterial inoculum on FON
| 菌株 Strain | FON菌落直径/mm FON diameter | 抑菌率/% Inhibition rate |
|---|---|---|
| 对照Control | 52.74 ± 0.37 a | / |
| PJ3/HY5 | 10.56 ± 0.61 d | 79.90 ± 1.15 a |
| PJ3 | 15.56 ± 0.56 c | 70.37 ± 1.06 b |
| HY5 | 18.36 ± 1.24 b | 65.05 ± 2.35 b |
Fig. 5 Effect of crude extract of biocontrol bacterial inhibitory substance on permeability of FON mycelium cell membrane t-Test,* indicates significantly difference at P < 0.05 level,** indicates significantly difference at P < 0.01 level,ns indicates no significant difference. The same blow
Fig. 7 Effect of crude extract of biocontrol bacterial bacteriostatic protein on MDA content of FON hyphae and culture medium JMDA:In mycelium,PMDA:In the culture medium,JMDA + PMDA:The total content
| 处理 Treatments | 发病率/% Disease incidence | 病情指数 Disease index | 防治效果/% Control efficiency |
|---|---|---|---|
| 不接种FON(No FON vaccination) | 73.33 ± 3.34 b | 56.00 ± 1.47 b | — |
| FON(对照Control) | 100.00 ± 0.00 a | 90.67 ± 4.35 a | — |
| PJ3 | 40.00 ± 2.44 c | 25.00 ± 1.33 d | 72.42 ± 2.44 a |
| HY5 | 33.33 ± 3.12 d | 22.67 ± 1.54 c | 75.00 ± 2.87 b |
| PJ3/HY5 | 26.67 ± 1.24 e | 15.00 ± 1.32 d | 83.46 ± 3.48 c |
Table 3 Control effect of different fermentation broth treatments on potted watermelon Fusarium wilt
| 处理 Treatments | 发病率/% Disease incidence | 病情指数 Disease index | 防治效果/% Control efficiency |
|---|---|---|---|
| 不接种FON(No FON vaccination) | 73.33 ± 3.34 b | 56.00 ± 1.47 b | — |
| FON(对照Control) | 100.00 ± 0.00 a | 90.67 ± 4.35 a | — |
| PJ3 | 40.00 ± 2.44 c | 25.00 ± 1.33 d | 72.42 ± 2.44 a |
| HY5 | 33.33 ± 3.12 d | 22.67 ± 1.54 c | 75.00 ± 2.87 b |
| PJ3/HY5 | 26.67 ± 1.24 e | 15.00 ± 1.32 d | 83.46 ± 3.48 c |
| 处理 Treatment | 根际土壤 The soil of melon seedling roots | 瓜苗根内 The roots of melon seedlings | ||
|---|---|---|---|---|
| 10 d | 30 d | 10 d | 30 d | |
| 不接种FON(No FON vaccination) | 19.29 ± 1.57 b | 27.77 ± 0.97 b | 18.38 ± 0.30 b | 25.19 ± 1.10 b |
| FON(对照Control) | 23.67 ± 0.48 a | 31.27 ± 0.63 a | 22.96 ± 0.51 a | 28.21 ± 1.46 a |
| PJ3 | 10.83 ± 0.92 cd | 3.28 ± 0.40 c | 11.16 ± 0.50 c | 2.40 ± 0.51 c |
| HY5 | 11.13 ± 0.39 c | 3.32 ± 0.99 c | 11.36 ± 0.32 c | 2.88 ± 0.28 c |
| PJ3/HY5 | 8.29 ± 0.84 d | 2.37 ± 0.25 c | 10.88 ± 0.53 c | 1.48 ± 0.33 c |
Table 4 Colonization amount of watermelon Fusarium wilt pathogen(FON)in rhizosphere soil and seedling roots after biocontrol bacteria treatment ng · g-1
| 处理 Treatment | 根际土壤 The soil of melon seedling roots | 瓜苗根内 The roots of melon seedlings | ||
|---|---|---|---|---|
| 10 d | 30 d | 10 d | 30 d | |
| 不接种FON(No FON vaccination) | 19.29 ± 1.57 b | 27.77 ± 0.97 b | 18.38 ± 0.30 b | 25.19 ± 1.10 b |
| FON(对照Control) | 23.67 ± 0.48 a | 31.27 ± 0.63 a | 22.96 ± 0.51 a | 28.21 ± 1.46 a |
| PJ3 | 10.83 ± 0.92 cd | 3.28 ± 0.40 c | 11.16 ± 0.50 c | 2.40 ± 0.51 c |
| HY5 | 11.13 ± 0.39 c | 3.32 ± 0.99 c | 11.36 ± 0.32 c | 2.88 ± 0.28 c |
| PJ3/HY5 | 8.29 ± 0.84 d | 2.37 ± 0.25 c | 10.88 ± 0.53 c | 1.48 ± 0.33 c |
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