NUST MISIS: Clones of Trees Will Help Restore Forests - Russian Scientists Increase the Survival Rate of Seedlings for After-Fire Reforestation

To restore forest resources, burned areas are sown with seedlings grown in special laboratory conditions using the method of microclonal reproduction. The method is based on the ability of a plant cell to give rise to an entire plant organism under favorable conditions. Tree microclones can be reproduced 3-4 times faster than conventional seedlings, while they are genetically homogeneous. To restore forest resources, burned areas are sown with seedlings grown in special laboratory conditions...

To restore forest resources, burned areas are sown with seedlings grown in special laboratory conditions using the method of microclonal reproduction. The method is based on the ability of a plant cell to give rise to an entire plant organism under favorable conditions. Tree microclones can be reproduced 3-4 times faster than conventional seedlings, while they are genetically homogeneous.

However, during adaptation to the soil, there is a high probability of their death, which reduces the effectiveness of the technology as a whole. To solve this problem, a team of scientists from NUST MISIS and TSU obtained experimental samples of unique nanopreparations for microclonal reproduction of trees based on colloidal solutions of nanoparticles.

"The obtained nanopreparations are the basis of the nutrient medium. They protect the microclonal seedlings of trees from infections. These are mostly microscopic phytopathogenic fungi, which at this stage kill about 30% of seedlings, - said the Project Manager, Director of the TSU Ecology and Biotechnology Research Institute Alexander Gusev. - Infections are especially dangerous when sprouts are transferred from laboratory test tubes to the non-sterile environment of the greenhouse, where they grow to become seedlings that can be planted in open ground."

The experiments in the framework of the project have shown that nanopreparations in a nutrient medium ensure the death of about 90-95% of pathogenic microorganisms.

"The active substance of the preparations is nanocomposites of the graphene oxide-silver and graphene oxide-copper oxide composition. In this case, silver or copper oxide nanoparticles are located on the surface of the graphene oxide sheets, - said the representative of the nanocomposite developers and the Head of the NUST MISIS Department of Functional Nanosystems and High-Temperature Materials Denis Kuznetsov. Graphene oxide serves as a bioactive nanoparticles carrier and a colloidal systems stabilizer, and silver and copper oxide act as non-toxic wide spectrum of action fungicides for plants." As a result of the project, stimulators of growth and phytoimmunity of tree crops, which have no analogs, were created. They are intended for use as components of cultivation media for microclonal sprouts and for treating plants in a greenhouse during growing in the closed ground.

The development of Russian scientists has export potential since it can be in demand in countries where the majority of planting material is produced by microclonal propagation laboratories – the USA, Canada, Spain, Italy, Portugal, Poland, Germany, Latvia, Belgium, and Holland.

Source: https://en.misis.ru/university/news/science/2020-02/6525/