Blue fungus

The root system of orchid is different from that of other plants in that it produces homomorphic clumps or scattered roots directly from the pseudobulm, which is grayish white and has a significant root cap, without main root, branch root, fine root and root hair. In case of hindrance or damage, many branches can be produced, but the shape is still the same as the original root. The structure of the root is divided into two layers, the inner layer as small as steel wire is called the central column, with a very strong mechanical structure, not easy to break, used to fix the orchid plant, but also a channel to transport water and nutrients. The outer layer is the cell epidermis, with root skin tissue, brittle and easy to break, storing water and nutrients, when full of water, it can prevent drought and protect the inner layer. There are green dots on the outer surface of the root bark, which is the unique air chamber of Langen.

In the orchid root tissue and the soil around the rhizosphere, there is usually a kind of root fungus called orchid. The mycelia of these orchids invade the cortical tissue inside the roots of orchids, forming a symbiotic relationship. The nutrition and water in the cortex of orchid root create necessary living conditions for orchid bacteria to reproduce and develop; at the same time, the mycelia of orchid bacteria are constantly decomposed and absorbed by orchids as nutrients of orchids. Promote orchids to root, sprout, blossom and bear fruit. The life of blue bacteria is stronger than that of other harmful bacteria and bacteria, and its multiplication forms a physical barrier to prevent the pathogen infection carried by orchid strains from the soil. When the orchid root lacks the blue fungus, it is difficult to grow.

White hyphae