Based on previous morphological classification and RAPD analysis, we recovered and sequenced genomic DNA of a specific fragment obtained from No. 45 Trichoderma harzianum strain in RAPD amplification. A pair of specif...Based on previous morphological classification and RAPD analysis, we recovered and sequenced genomic DNA of a specific fragment obtained from No. 45 Trichoderma harzianum strain in RAPD amplification. A pair of specific primers was synthesized and the RAPD markers were successfully converted into SCAR markers. The SCAR molecular marker exhibited the specificity that could differ T. harzianum from other Trichoderma strains. This pair of molecular primers was used for specific PCR amplification of 45 Trichoderma strains, and T. harzianum strains could amplify a 779 bp DNA band while other strains had no amplification products.展开更多
Trichoderma harzianum is a widely used biocontrol fungus. The growth promoting effect of strain Trichoderma harzianum TL-1 on tomato and pepper and its biological control effects against tomato seedling damping-off an...Trichoderma harzianum is a widely used biocontrol fungus. The growth promoting effect of strain Trichoderma harzianum TL-1 on tomato and pepper and its biological control effects against tomato seedling damping-off and pepper blight were investigated through pot experiments. The results showed that the stain TL-1 had significant promotion effect on growth of pepper and tomato in sterilized and natural soils. With the application dose of 3. 0 and 0. 5g/ pot,their dry weight were increased up to 46% and 150% compared with control,respectively. In addition,TL-1 had good control effects against tomato seedling damping-off and pepper blight. Compared with fungicide treatment,TL-1 treatment could control diseases for long term,without repeat occurrence of diseases.展开更多
基金Supported by Natural Science Fund of Hainan Province in 2013"DNA Barcode Research of Medical Plants in Euphorbiaceae in Hainan Province"(813190)
文摘Based on previous morphological classification and RAPD analysis, we recovered and sequenced genomic DNA of a specific fragment obtained from No. 45 Trichoderma harzianum strain in RAPD amplification. A pair of specific primers was synthesized and the RAPD markers were successfully converted into SCAR markers. The SCAR molecular marker exhibited the specificity that could differ T. harzianum from other Trichoderma strains. This pair of molecular primers was used for specific PCR amplification of 45 Trichoderma strains, and T. harzianum strains could amplify a 779 bp DNA band while other strains had no amplification products.
基金Supported by Natural Science Fund of Hainan Province in 2013"DNA Barcode Research of Medical Plants in Euphorbiaceae in Hainan Province"(813190)
文摘Trichoderma harzianum is a widely used biocontrol fungus. The growth promoting effect of strain Trichoderma harzianum TL-1 on tomato and pepper and its biological control effects against tomato seedling damping-off and pepper blight were investigated through pot experiments. The results showed that the stain TL-1 had significant promotion effect on growth of pepper and tomato in sterilized and natural soils. With the application dose of 3. 0 and 0. 5g/ pot,their dry weight were increased up to 46% and 150% compared with control,respectively. In addition,TL-1 had good control effects against tomato seedling damping-off and pepper blight. Compared with fungicide treatment,TL-1 treatment could control diseases for long term,without repeat occurrence of diseases.