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稻瘟病菌和胡麻斑病菌的碳氮营养有明显的差别。稻瘟病菌对碳源利用的顺序是:麦芽糖、葡萄糖>果糖、蔗糖>乳糖、淀粉>木糖>门冬酰胺、半乳糖、阿拉伯糖,不能利用甘油。胡麻斑病菌利用碳源的顺序是:麦芽糖、乳糖>淀粉>蔗糖>木糖>葡萄糖、果糖、半乳糖>阿拉伯糖,不能利用门冬酰胺和甘油。稻瘟病菌和胡麻斑病菌都能利用各种无机氮。氨态氮和硝态氮同时存在时,两种病菌都是先利用氨态氮,而后利用硝态氮。胡麻斑病菌利用硝态氮的能力较强。试验结果证明,在适宜的碳源条件下,胡麻斑病菌对氮源的利用效率比稻瘟病菌高。而对不同碳源的利用效率则有不同的反应,胡麻斑病菌对麦芽糖利用较好,对葡萄糖的利用则不如稻瘟病菌,此对麦芽糖的利用效率低1/3左右,而稻瘟病菌对葡萄糖和麦芽糖的利用都很好。胡麻斑病菌对各种氨基酸的利用比稻瘟病菌广泛。21种供试氨基酸中,胡麻斑病菌能更好利用的有17种,而稻瘟病菌只有8种。最适于稻瘟病菌生长利用的氨基酸,大部分是稻株在多施氮肥条件下含量显著增高的几种氨基酸,如L-门冬氨酸、L-门冬酰胺、L-谷氨酸、L-谷氨酰胺、DL-丝氨酸、L-脯氨酸、L-丙氨酸和γ-氨基丁酸等。
There was a clear difference between carbon and nitrogen of M. grisea and R. solani. Magnaporthe grisea carbon source utilization order is: maltose, glucose> fructose, sucrose> lactose, starch> xylose> asparagine, galactose, arabinose, can not use glycerol. The order of utilization of carbon sources by Rhododendron gossypii is: maltose, lactose> starch> sucrose> xylose> glucose, fructose, galactose> arabinose, asparagine and glycerol can not be utilized. Both Magnaporthe grisea and Rhizoctonia solani can utilize various inorganic nitrogen. Ammonia nitrogen and nitrate nitrogen exist at the same time, the two bacteria are the first to use ammonia nitrogen, and then use nitrate nitrogen. Rhizoctonia solani utilization of nitrate ability. The results showed that under the suitable carbon source conditions, Rhizoctonia solani to nitrogen source utilization efficiency higher than Magnaporthe. However, the efficiency of utilization of different carbon sources is different, the use of Malvaceae by Rhizoctonia solani is better, the utilization of glucose is not as good as that of Magnaporthe grisea, the utilization efficiency of maltose is about 1/3, The use of glucose and maltose are good. Flammulina’s use of various amino acids is more extensive than Magnaporthe grisea. Of the 21 kinds of tested amino acids, 17 species were better used by R. solani and 8 species were M. grisea. Most suitable for the growth and utilization of Magnaporthe grisea amino acids, most of them are several amino acids significantly increased under the conditions of nitrogen fertilizer application, such as L-aspartic acid, L-asparagine, L-glutamic acid, L-glutamine, DL-serine, L-proline, L-alanine and γ-aminobutyric acid and the like.