1 材料与方法
1.1 材料
1.2 方法
1.3 数据处理
2 结果与分析
2.1 病害症状描述
2.2 致病性测定
图2 致病性测定A:接种5个月后的木麻黄整株枯死;B、C:病原菌已在接种部位定殖,内部组织白腐;D、E:对照;F:接种分离菌的瓶装木屑培养基诱导长出的担子果。 Fig. 2 Pathogenicity test A: Whole plant dead after 5 months of inoculation; B and C: The pathogen colonized the tissue surrounding the inoculation site, and the internal tissue turned white rot; D and E: CK; F: The induced basidiocarp developed from the sawdust medium inoculated by the isolated pathogen. |
2.3 病原菌的鉴定
图3 病原菌形态A:PDA培养基上生长4d的菌落(正面);B-G:不同时期生长的担子果;H:皮壳;I:菌丝(①缠绕菌丝;②骨架菌丝;③生殖菌丝);J:锁状联合;K:担孢子(大小2种)。 Fig. 3 Morphology of pathogen A: Pathogen’s colony morphology on PDA medium for 4 days (front side); B-G: The basidiocarps grown in different periods; H: Cutis; I: Hyphae(①Binding hyphae; ②Skeletal hyphae; ③Generative hyphae); J: Clamp connection; K: Basidiospores (two types). |
2.4 生物学特性
图6 不同光照下二孢假芝的菌落直径不同大写字母表示0.01水平上差异极显著,不同小写字母表示0.05水平上差异显著。 Fig. 6 Colony diameter of A. subresinosum cultured under different light conditions Different capital letters mean extremely significant difference at 0.01 level. Different small letters mean significant difference at 0.05 level. |
表1 不同碳源培养二孢假芝的菌落直径及特征Tab. 1 Colony diameter and colony characteristics of A. subresinosum under different carbon sources conditions |
| 碳源Carbon source | 菌落直径 Colony diameter/cm | 菌落特征 Colony characteristics |
|---|---|---|
| 甘露醇Mannitol | 5.92±0.10aA | 菌丝层近透明,长势差 |
| 蔗糖Sucrose | 5.58±0.09bB | 菌丝层较厚且厚薄均匀,长势优良 |
| 葡萄糖Glucose | 5.50±0.04bB | 菌丝层较厚且厚薄均匀,长势优良 |
| D-木糖D-Xylose | 5.15±0.07cC | 菌丝层较厚且厚薄均匀,长势优良 |
| D-半乳糖D- Galactose | 4.70±0.08dD | 菌丝层厚薄不均,长势良好 |
| D-果糖D-Fructose | 4.22±0.08eE | 菌丝层厚薄不均,长势良好 |
| 可溶性淀粉Soluble starch | 4.12±0.08eEF | 菌丝层厚薄不均,长势良好 |
| D-山梨醇D-Sorbitol | 4.10±0.07eEF | 菌丝层近透明,长势差 |
| 麦芽糖Maltose | 4.08±0.05eEF | 菌丝层厚薄不均,长势良好 |
| 肌醇Inositol | 4.08±0.06eEF | 菌丝层近透明,长势差 |
| α-乳糖α-Lactose | 3.88±0.12fF | 菌落几乎全透明, 长势极差 |
| 甘油Glycerol | 3.08±0.05gG | 菌落几乎全透明, 长势极差 |
| 对照CK | 4.65±0.10dD | 菌落几乎全透明, 长势极差 |
Note: Different capital letters mean extremely significant difference at 0.01 level. Different small letters mean significant difference at 0.05 level. | |
注:不同大写字母表示0.01水平上差异极显著, 不同小写字母表示0.05水平上差异极显著。 |
表2 不同氮培养二孢假芝的菌落直径及特征Tab. 2 Colony diameter and colony characteristics of A. subresinosum under different nitrogen sources conditions |
| 氮源 Nitrogen source | 菌落直径 Colony diameter/cm | 菌落特征 Colony characteristics |
|---|---|---|
| 大豆蛋白胨Soya peptone | 7.75±0.04aA | 菌落乳白色,菌丝层浓密,长势好 |
| 酵母浸膏Yeast extract | 6.90±0.07bB | 菌落乳白色,菌丝层浓密,长势好 |
| 牛肉浸膏Beef extract | 5.88±0.08cC | 菌落乳白色,菌丝层浓密,长势好 |
| L-天冬酰胺L-Asparagine | 5.60±0.07dD | 菌丝层较厚且厚薄均匀,长势优良 |
| 氯化铵Ammonium chloride | 5.53±0.08dD | 菌丝层较厚且厚薄均匀,长势优良 |
| 硫酸铵Ammonium sulphate | 5.28±0.09eE | 菌丝层较厚且厚薄均匀,长势优良 |
| 硝酸铵Ammonium nitrate | 4.73±0.09fF | 菌丝层较厚且厚薄均匀,长势优良 |
| 硝酸钙Calcium nitrate | 4.28±0.09gG | 菌丝层厚薄不均,长势良好 |
| 硝酸钾Potassium nitrate | 3.70±0.04hH | 菌丝层厚薄不均,长势良好 |
| 硝酸钠Sodium nitrate | 3.48±0.02iI | 菌丝层近透明,长势差 |
| 草酸铵Ammonium oxalate | 2.67±0.06jJ | 菌丝层厚薄不均,长势良好 |
| 对照CK | 4.32±0.06gG | 菌落几乎全透明, 长势极差 |
Note: Different capital letters mean extremely significant difference at 0.01 level. Different small letters mean significant difference at 0.05 level. | |
注:不同大写字母表示0.01水平上差异极显著, 不同小写字母表示0.05水平上差异显著。 |
