madalinai

joined 1 year ago
 

Stevia rebaudiana Bertoni is a valuable plant whose products are increasingly used in medicine, pharmacy and the food industry. This necessitates the use of biotechnological approaches for its mass propagation. Establishing optimal conditions for in vitro cultivation is essential for obtaining high biomass and secondary metabolites production. A large number of articles considering the role of plant growth regulators and other additives in the culture medium in the growth and development of Stevia are available in the literature. However, there are no summarized data about the use of nanoparticles in Stevia tissue cultures. Therefore, this review also includes the research conducted so far on the effect of nanoparticles on Stevia micropropagation. Furthermore, the influence of different elicitors on secondary metabolite production and antioxidant activity of in vitro-cultivated Stevia plants have been discussed. By referring to the collected literature, we concluded that biotechnological approaches applied to S. rebaudiana cultivation might improve the agronomic traits of plants and steviol glycosides production.
#Stevia #kombucha #ikombucha_ro #ikombucha
https://pubmed.ncbi.nlm.nih.gov/36616282/

#science

2
Plants (media.kbin.social)
 

Plants
Our living beings, you may have left our eyes, but you have never left our hearts.
The second largest kingdom, after the animal, is represented by plants. The distinctive feature of plants is obtaining energy from sunlight, through the process called photosynthesis. Most plants have wide flat surfaces - the leaves, at the level of which this process is carried out. Just as there are many groups of animals, from simple worms to complicated mammals, so the groups of plants are also numerous and varied.
Mainly plants are divided into two broad categories – simple plants without flowers, and flowering plants.
Plants never seem to be active. But inside the millions of microscopic cells that form the body of a plant, thousands of chemical transformations take place, forming part of the body's vital processes. Like the body of an animal, the body of a plant has specialized areas to perform certain functions. Roots take from the soil water, mineral salts and other substances necessary for life. The rigid stem supports parts of the plant on the surface of the soil, away from animals on the ground that might eat them, and above other plants so that the leaves capture more light.
The leaves of plants are a kind of small factories that produce food with the help of light. They have a wide surface, to capture as much light as possible, and contain inside a green substance called chlorophyll, which absorbs the energy provided by sunlight. Chlorophyll uses energy to achieve a chemical reaction. Water, absorbed from the soil, and carbon dioxide, received from the air, unite and form glucose, which contains a large amount of energy stored in chemical form. Glucose is then used as a" fuel " for the plant's vital processes. The whole phenomenon is called photosynthesis-a word that means"to produce with the help of light".
The carbon dioxide needed for photosynthesis is taken from the air. It penetrates the leaf through small holes located on its lower face, called the stomata. In addition to organic substances, photosynthesis also results in oxygen, which is eliminated in the air.
Living beings need oxygen to live. Plants contribute to maintaining a sufficient amount of oxygen in the air.
We were only able to offer you a small space and positioned on the north-west side of the building, even if it was against our wishes. However, we lived together for a shorter or longer period of time. Thank you for this and for all you have offered. We hope that many wounds can be healed with these words: Forgive us!
Life is eternal, and love is immortal, and death is but a horizon; and a horizon is nothing but the limit of our sight. - Rossiter W. Raymond

#fediverse

 

Memories that time does not erase
The sun, the moon, the wind, the stars will always be around, recalling the love they shared and the peace they finally found after leaving the torment.
We've been begging for birds
And he gave us each
One feather at a time.
One tall eagle,
A red one from the bird of paradise,
One green from hummingbirds,
One yellow one from pigeons,
Blue one from nymphs
A chatty one from the parakeets,
One singer from singing parrots,
The cowardly one from the ostrich
Oh, what wings we made!
We took them to heart
And we started flying.
High Eagle Flight,
Red flight of paradise bird,
Green flight of hummingbirds,
Yellow pigeon flight,
Blue flight of nymph,
Chatty flight of the parakeet,
Flight singer parrot singer,
Cowardly flight of ostrich
Oh, I flew!
Perhaps they are not stars, but rather openings in heaven where the love of the lost pours out and shines upon us to make us know that they are happy. Our hearts cry asking for your forgiveness!

#animals

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