浙江农业学报 ›› 2024, Vol. 36 ›› Issue (11): 2535-2545.DOI: 10.3969/j.issn.1004-1524.20231282
收稿日期:2023-11-13
出版日期:2024-11-25
发布日期:2024-11-27
作者简介:龚娜(1982—),女,辽宁朝阳人,硕士,副研究员,主要从事食药用菌育种与栽培生理等研究工作。E-mail:doll52133@163.com
通讯作者:
*肖军,E-mail:xiaojun20002@163.com
基金资助:
GONG Na(
), LIU Guoli, CHEN Xun, MA Xiaoying, ZHAO Ying, XIAO Jun(
)
Received:2023-11-13
Online:2024-11-25
Published:2024-11-27
摘要:
为优化肺形侧耳液体发酵的培养基配方,以采集到的野生侧耳菌株为试验材料,通过分子生物学方法确定该菌株为肺形侧耳,利用单因素试验筛选该野生肺形侧耳液体发酵培养基的最适碳源、氮源、无机盐及其质量浓度;根据单因素试验结果,选择玉米粉、豆粕粉、MgSO4·7H2O为考察因素,以肺形侧耳菌丝生物量为指标,采用Box-Benhnken设计优化肺形侧耳的液体发酵培养基。单因素试验结果表明,野生肺形侧耳液体发酵培养基的最适碳源、氮源、无机盐分别是玉米粉、豆粕粉和MgSO4·7H2O。Box-Benhnken设计试验结果显示:响应面回归模型拟合系数可达0.968 4,肺形侧耳的最佳液体发酵培养基配方为玉米粉24.36 g·L-1、豆粕粉9.98 g·L-1、MgSO4·7H2O 2.66 g·L-1;在最佳培养基中,肺形侧耳菌丝体的理论生物量为11.15 mg·mL-1,实测生物量为11.09 mg·mL-1。优化后的液体发酵培养基比PDA培养基发酵时间缩短4 d,产量提高1.21 mg·L-1。
中图分类号:
龚娜, 刘国丽, 陈珣, 马晓颖, 肇莹, 肖军. 一株野生肺形侧耳的鉴定及其液体发酵培养基的优化[J]. 浙江农业学报, 2024, 36(11): 2535-2545.
GONG Na, LIU Guoli, CHEN Xun, MA Xiaoying, ZHAO Ying, XIAO Jun. Identification of a wild strain of Pleurotus pulmonarius and optimization of its liquid fermentation culture medium[J]. Acta Agriculturae Zhejiangensis, 2024, 36(11): 2535-2545.
| 水平 Level | 因素Factor | ||
|---|---|---|---|
| A玉米粉 Corn flour | B豆粕粉 Soybean meal | C MgSO4·7H2O | |
| -1 | 10 | 6 | 1 |
| 0 | 20 | 9 | 2.5 |
| 1 | 30 | 12 | 4 |
表1 Box-Behnken实验设计的因素与水平
Table 1 Factors and levels of Box-Behnken design g·L-1
| 水平 Level | 因素Factor | ||
|---|---|---|---|
| A玉米粉 Corn flour | B豆粕粉 Soybean meal | C MgSO4·7H2O | |
| -1 | 10 | 6 | 1 |
| 0 | 20 | 9 | 2.5 |
| 1 | 30 | 12 | 4 |
图2 不同碳源培养基中野生肺形侧耳菌丝的长势、形态和生物量 图A中1、2、3、4、5和6分别是以可溶性淀粉、蔗糖、木屑粉、葡萄糖、果糖和玉米粉为碳源的培养基。图B中柱上无相同小写字母表示差异显著(P<0.05)。
Fig.2 Growth, morphology and biomass of wild P. pulmonarius mycelium under different carbon sources 1, 2, 3, 4, 5 and 6 in figure A were media with soluble starch, sucrose, sawdust, glucose, fructose and corn flour as carbon source, respectively. The bars in figure B marked without the same lowercase letter indicated significant differences at P<0.05.
图3 不同质量浓度玉米粉培养基中肺形侧耳菌丝的生物量和菌球数量
Fig.3 The mycelium biomass and globule number of wild Pleurotus pulmonarius under different mass concentrations of corn meal
图4 不同氮源培养基中野生肺形侧耳菌丝的长势、形态和生物量 图A中1、2、3、4、5和6分别是以蛋白胨、酵母膏、麸皮、牛肉膏、麦芽浸粉、豆粕粉为氮源的培养基。图B中柱上无相同小写字母表示差异显著(P<0.05)。
Fig.4 Growth, morphology and biomass of wild P. pulmonarius mycelium under different nitrogen sources 1, 2, 3, 4, 5 and 6 in figure A were media with peptone, yeast, bran, beef extract, malt extract and soybean meal as nitrogen source, respectively. The bars in figure B marked without the same lowercase letter indicated significant differences at P<0.05.
图6 不同无机盐对肺形侧耳菌丝生长和生物量的影响 Ⅰ,KH2PO4;Ⅱ,MgSO4·7H2O;Ⅲ,NaCl;Ⅳ,CoCl2;Ⅴ,FeSO4;Ⅵ,ZnSO4。柱上无相同小写字母表示差异显著(P<0.05)。
Fig.6 Effect of different inorganic salts on the growth and biomass of P. pulmonarius mycelium Ⅰ, KH2PO4; Ⅱ, MgSO4·7H2O; Ⅲ, NaCl; Ⅳ, CoCl2; Ⅴ, FeSO4; Ⅵ, ZnSO4. The bars marked without the same lowercase letter indicated significant differences at P<0.05.
| 序号 No. | 因素Factor | 菌丝生物量 Mycelium biomass/ (mg·mL-1) | |||
|---|---|---|---|---|---|
| A玉米粉 Corn meal | B豆粕粉 Soybean meal | C MgSO4·7H2O | |||
| 1 | -1 | -1 | 0 | 3.65 | |
| 2 | 1 | -1 | 0 | 5.10 | |
| 3 | -1 | 1 | 0 | 5.08 | |
| 4 | 1 | 1 | 0 | 9.50 | |
| 5 | -1 | 0 | -1 | 4.63 | |
| 6 | 1 | 0 | -1 | 8.17 | |
| 7 | -1 | 0 | 1 | 4.43 | |
| 8 | 1 | 0 | 1 | 8.97 | |
| 9 | 0 | -1 | -1 | 5.78 | |
| 10 | 0 | 1 | -1 | 6.92 | |
| 11 | 0 | -1 | 1 | 5.15 | |
| 12 | 0 | 1 | 1 | 7.90 | |
| 13 | 0 | 0 | 0 | 10.15 | |
| 14 | 0 | 0 | 0 | 11.47 | |
| 15 | 0 | 0 | 0 | 10.67 | |
| 16 | 0 | 0 | 0 | 11.03 | |
| 17 | 0 | 0 | 0 | 9.50 | |
表2 响应面法试验设计和结果
Table 2 Experimental design and results of response surface method
| 序号 No. | 因素Factor | 菌丝生物量 Mycelium biomass/ (mg·mL-1) | |||
|---|---|---|---|---|---|
| A玉米粉 Corn meal | B豆粕粉 Soybean meal | C MgSO4·7H2O | |||
| 1 | -1 | -1 | 0 | 3.65 | |
| 2 | 1 | -1 | 0 | 5.10 | |
| 3 | -1 | 1 | 0 | 5.08 | |
| 4 | 1 | 1 | 0 | 9.50 | |
| 5 | -1 | 0 | -1 | 4.63 | |
| 6 | 1 | 0 | -1 | 8.17 | |
| 7 | -1 | 0 | 1 | 4.43 | |
| 8 | 1 | 0 | 1 | 8.97 | |
| 9 | 0 | -1 | -1 | 5.78 | |
| 10 | 0 | 1 | -1 | 6.92 | |
| 11 | 0 | -1 | 1 | 5.15 | |
| 12 | 0 | 1 | 1 | 7.90 | |
| 13 | 0 | 0 | 0 | 10.15 | |
| 14 | 0 | 0 | 0 | 11.47 | |
| 15 | 0 | 0 | 0 | 10.67 | |
| 16 | 0 | 0 | 0 | 11.03 | |
| 17 | 0 | 0 | 0 | 9.50 | |
| 方差来源 Source of variation | 平方和 Sum of square | 自由度 Degree of freedom | 均方 Mean square | F值 F value | P |
|---|---|---|---|---|---|
| 模型Model | 4.220 0 | 9 | 0.468 5 | 23.85 | 0.000 2 |
| A | 0.970 7 | 1 | 0.970 7 | 49.42 | 0.000 2 |
| B | 0.472 1 | 1 | 0.472 1 | 24.03 | 0.001 7 |
| C | 0.004 5 | 1 | 0.004 5 | 0.23 | 0.646 3 |
| AB | 0.088 0 | 1 | 0.088 0 | 4.48 | 0.072 1 |
| AC | 0.010 0 | 1 | 0.010 0 | 0.51 | 0.498 6 |
| BC | 0.026 1 | 1 | 0.026 1 | 1.33 | 0.286 5 |
| A2 | 0.897 7 | 1 | 0.897 7 | 45.71 | 0.000 3 |
| B2 | 0.987 3 | 1 | 0.987 3 | 50.27 | 0.000 2 |
| C2 | 0.489 4 | 1 | 0.489 4 | 24.91 | 0.001 6 |
| 残差Residual | 0.137 5 | 7 | 0.019 6 | ||
| 失拟项Lack of fit | 0.043 5 | 3 | 0.014 5 | 0.62 | 0.639 3 |
| 纯误差Pure error | 0.094 0 | 4 | 0.023 5 | ||
| 总离差Total dispersion | 4.350 0 | 16 |
表3 回归模型方差分析
Table 3 Variance analysis of regression model
| 方差来源 Source of variation | 平方和 Sum of square | 自由度 Degree of freedom | 均方 Mean square | F值 F value | P |
|---|---|---|---|---|---|
| 模型Model | 4.220 0 | 9 | 0.468 5 | 23.85 | 0.000 2 |
| A | 0.970 7 | 1 | 0.970 7 | 49.42 | 0.000 2 |
| B | 0.472 1 | 1 | 0.472 1 | 24.03 | 0.001 7 |
| C | 0.004 5 | 1 | 0.004 5 | 0.23 | 0.646 3 |
| AB | 0.088 0 | 1 | 0.088 0 | 4.48 | 0.072 1 |
| AC | 0.010 0 | 1 | 0.010 0 | 0.51 | 0.498 6 |
| BC | 0.026 1 | 1 | 0.026 1 | 1.33 | 0.286 5 |
| A2 | 0.897 7 | 1 | 0.897 7 | 45.71 | 0.000 3 |
| B2 | 0.987 3 | 1 | 0.987 3 | 50.27 | 0.000 2 |
| C2 | 0.489 4 | 1 | 0.489 4 | 24.91 | 0.001 6 |
| 残差Residual | 0.137 5 | 7 | 0.019 6 | ||
| 失拟项Lack of fit | 0.043 5 | 3 | 0.014 5 | 0.62 | 0.639 3 |
| 纯误差Pure error | 0.094 0 | 4 | 0.023 5 | ||
| 总离差Total dispersion | 4.350 0 | 16 |
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