Myrothamnus flabellifolius

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Myrothamnus flabellifolius is a plant species in the genus Myrothamnus found in Southern Africa. It is also called the resurrection plant, for the speed with which apparently dead leaves revive when the rains come. (see Poikilohydry)

3,4,5-Tri-O-galloylquinic acid is a tannin found in M. flabellifolius.

Description

Myrothamnus flabellifolius is a small resinous shoot that reaches 200 - 1200mm in height. It can be found in either single bundles or colonies. These colonies are commonly found to have extensive root systems. During the winter these plants are known to lose all of their leaves. It will stay in this state for approximately half of the year. After first rainfall, it can grow back its leaves very quickly. These plants were shown to have a noticeable difference in size, between its dehydrated state and re-hydrated state.

Myrothamnus flabellifolius undergoes a rapid transformation after rainfall, changing from a metabolically inactive state. It can also maintain all its photosynthetic apparatus and chlorophyll throughout all phases of life. The plant is also able to fold its leaf and stems, to reduce the level of light being absorbed by the plant. Thylakoid membranes are stacked upon each other to reduce photo-oxidative stress. Most of the mesophyll cells fold their cell wall in response to desiccation. Sclerenchyma and vascular cells do not fold, providing support for the plant. Once water is re-introduced, water absorption happens mostly via the roots, as leaves are unable to absorb any water at all. Water transport is aided with the help of lipids found in the xylem. The lipids help prevents cavitation which helps in re-hydration.

Myrothamnus flabellifolius - Wikipedia

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