摘要
为了探索盾壳霉固体发酵的条件,提高其生防效果,比较了6种天然培养基对盾壳霉固体发酵的影响,测定了在不同发酵培养基、温度、初始湿度、接种比例条件下盾壳霉的产孢量。结果表明:盾壳霉在麦粒和谷粒培养基上产孢量最大;而在麸皮和棉籽培养基上生长和产孢也较好,且成本低,成为后续试验的发酵材料。在含麦麸、棉籽壳及无机盐的培养料作为基质时,采用温度为20℃,发酵料初始湿度为60%,接种比例为7%,最终孢子含量可达109个/g以上。同时对发酵的条件做了进一步优化,发现麦粒与谷粒的混合比例、光照条件、甘露糖和甘氨酸含量对盾壳霉产孢量的影响较大。
In order to study solid fermentation conditions in Coniothyrium minitans and improve its biocontroleffect, the effect of six natural substrates on solid-state fermentation in C. minitans was compared. Spore of C minitans was tested at different fermenting media, temperature, initial moisture and inoculation rate. The results showed that, spore was most in wheat grain and corn grain media and better in wheat bran and cotton seed hulls media. Being cheaper, wheat bran and cotton seed hulls acted as fermentation materials of following test. When substrates contained wheat bran, cotton seed and inorganic salt, the temperature was 20℃, initial moisture of fermentation substrates was 60%, inoculation rate was 7%, spore could reach 1 × 10^9 conidia/g at last. Fermenting conditions were further optimized. It showed that rate of wheat grain and corn grain, light, contents of mannose and glycine obviously influenced spore.
出处
《中国农学通报》
CSCD
2012年第30期101-105,共5页
Chinese Agricultural Science Bulletin
基金
山西省科技攻关项目"酒红链霉菌St24代谢产物的结构鉴定及在植物病虫害防治上的应用"(20100311038)
"山西省地方优良果树资源的收集利用--梨树内生细菌LP3抗菌物质的分离纯化及应用研究"(20110311013-1)
山西省留学归国基金"果树内生细菌的分离鉴定及其生物学功能研究"(2009043)
"梨树内生枯草芽孢杆菌LP3防病促生作用的研究"(2011-52)
关键词
盾壳霉
固体发酵
温度
初始湿度
接种比例
Coniothyrium minitans
solid-state fermentation
temperature
initial moisture
inoculation rate
