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 脱色剂组分和脱色时间优化
图1 脱色剂组分对橡胶树叶片脱色效果的影响A~D:分别是配比为3∶1、4∶1、5∶1、6∶1的0.15%三氯乙酸乙醇溶液和氯仿的脱色剂的脱色效果。 Fig. 1 Effect of the agent composition on decolorizing rubber tree leaves A-D: The decolorizing effects of the agent of 0.15% trichloroacetic acid-alcohol solution and chloroform at the ratios of 3∶1, 4∶1, 5∶1, and 6∶1, respectively. |
2.2 染色剂筛选
图2 染色剂对橡胶树叶片和胶孢炭疽菌染色效果的影响A~C:分别为染色液处理后橡胶树叶片的着色效果,D~F分别为染色液处理后胶孢炭疽菌的染色效果。箭头所示为分生孢子。 Fig. 2 Effects of staining agent on staining rubber tree leaves and C. gloeosporioides A-C: The effects of different agents on staining rubber tree leaves, and D-F represent the effects of different agents on staining C. gloeosporioides. The arrow shows conidia. |
2.3 染色时间优化
图3 染色时间对橡胶树叶片中胶孢炭疽菌染色效果的影响A~F:分别是染色液处理0.5、1、1.5、2、3、4 h的染色结果。CO:孢子;GT:芽管;AP:附着胞;HY:菌丝。 Fig. 3 Effect of staining time on staining C. gloeosporioides in rubber tree leaves A-F: The staining effects of the agent at the staining time of 0.5, 1, 1.5, 2, 3, 4 h, respectively. CO: Conidium; GT: Germ tube; AP: Appressorium; HY: Hypha. |
2.4 胶孢炭疽菌接种橡胶树叶片后侵染症状
2.5 胶孢炭疽菌在寄主叶片上的发育进程及侵染结构的显微观察
图5 胶孢炭疽菌在橡胶树叶片上的发育进程和侵染结构A:接种0 h,分生孢子的形态;B:接种2 h,分生孢子开始萌发形成芽管;C:接种4 h,附着胞形成;D:接种12 h,附着胞形成侵染钉;E:接种12 h,分生孢子萌发形成多个芽管;F:接种24 h,分生孢子另一端的芽管产生附着胞;G:接种36 h,附着胞分化产生次级附着胞;H:接种48 h,芽管异化成菌丝并产生次级分生孢子;I:接种72 h,菌丝网状分布。CO:分生孢子;GT:芽管;AP:附着胞;IP:侵染钉;HY:菌丝;SC:次级分生孢子;CPS:分生孢子梗;SA:次级附着胞。 Fig. 5 Development process and infection structures of C. gleosporidoies in rubber tree leaves A: Morphology of conidia at 0 h inoculation; B: Conidium germinated and formed a germ tube at 2 h inoculation; C: Appressorium formation at 4 h inoculation; D: Appressorium infected nails at 12 h inoculation; E: Spores germinate to form multiple germ tubes at 12 h inoculation; F: The other germ tube of conidium formed appressorium at 24 h inoculation; G: Appressorium differentiated to produce secondary appressorium at 36 h inoculation; H: Germ tube differentiated into hyphae and produced secondary conidia at 48 h inoculation; I: Hyphae formed a net-like distribution after 72 h inoculation. CO: Conidium; GT: Germ tube; AP: Appressorium; IP: Infection peg; HY: Hypha; SC: Secondary conidia germinated; CPs: Conidiophores; SA: Secondary appressorium. |
