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- plantcelltechnology
- PPM-100
- 2025年09月15日
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- 详细信息
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- 供应商：
PPM –植物组织培养抗菌保护剂
- 规格：
100ml
Plant Preservative Mixture (PPM) 100 ml
Plant Preservative Mixture (PPM), is a broad-spectrum biocide/fungicide for plant tissue culture. PPM™ is the ultimate solution to the never-ending struggle against microbial airborne, waterborne and endogenous contamination.
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About Plant Preservative Mixture (PPM)
PPM™ is a heat stable preservative/biocide which can be used to effectively prevent or reduces microbial contamination in plant tissue culture.
At optimum doses, PPM™, which stands for Plant Preservative Mixture™, is an extremely effective Preservative/Biocide, yet does not impair in vitro seed germination, callus proliferation and callus regeneration.
Despite the most stringent use of sterile techniques, the contamination of plant cell and plant tissue cultures remain a persistent problem that can result in losses ranging from small number of cultures to the loss of whole batches.
PPM™ prevents the germination of both bacteria and fungi spores. It is heat stable and therefore can be autoclaved with the media.
PPM™ can be, and should be used as a standard ingredient in plant tissue culture media, and is also substantially less expensive than commonly used antibiotics.
While PPM™ was principally designed to inhibit airborne contamination, waterborne contamination and contamination introduced from human contact, it can also -- in many cases -- be used to reduce endogenous contamination.
The principal PCT scientist involved in the development of the PPM™ application is Dr. Assaf Guri. Dr. Assaf Guri holds degrees in genetics, applied genetics and plant breeding from the Hebrew University in Jerusalem and Michigan State University in the US. Before joining Plant Cell Technology, Inc., Assaf worked with the Volcani Agricultural Research Center in Israel, Michigan State University in East Lansing, Michigan and DNAP in New Jersey.
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文献和实验亦称 C3- 植物。在光合作用过程中仅以 C3 途径同化二氧化碳的植物。如小麦、大豆、烟草及菠菜等。与 C4 植物相比，它们的光呼吸及二氧化碳补偿点（ 50～ 150ppm）均高；光饱和点（ 2～ 3万米烛光）、光合作用最适温度（ 15～ 25℃）低，在强光及其他条件适合情况下，光合速率（ 10～ 40CO2 毫克·分米 -2 ·小时 -1 ）也低。
亦称 C4 -植物。在光合作用过程中，既具有 C3 途径，又具有 C4 途径的植物。如玉米、甘蔗、高粱、马齿苋等。其叶解剖学上的一个重要特点是在维管束周围，有一圈含叶绿体的维管束鞘细胞，典型者在这圈细胞外，又环列有几层叶肉细胞形成花环结构。与 C3 植物相比，光呼吸弱，二氧化碳补偿点（ 1～ 10ppm）低，光饱和点几乎达到全日照；光合作用最适温度（ 30～ 45℃）高；在强光及其他适合条件下光合速率（ 40～ 80CO2 毫克·分米 -2 ·小时 -1 ）高。这主要
Extraction and Purification of RNA from Plant Tissue Enriched in Polysaccharides
both between species and for the same species when grown under different environmental conditions (1 –7 ,11 ). We are interested in the effects of rising atmospheric CO2 on plant gene expression. Exposure of plants to elevated CO2 (e.g., 100 ppm) often results
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