Hormonal regulation of rest, ageing and stress. Ageing of plants, maturing of fruits and subsidence of leaves

you are: Hormonal regulation of rest, ageing and stress

Etilen, apparently, plays the important role in regulation of many aspects of ageing of a plant, such, as withering tsvetkov, maturing of fruits and subsidence of leaves. If the flower orhidnogo plants without pollination remains fresh during long time after pollination it it is very fast zavjadaet. Reason of it consists that pollination initiates formation etilena which then causes ageing of flower petals. At ipomei as the supervising factor any specific process, and time serves not. Tsvetki open early in the morning, begin zavjadat a bit later and by noon turn to shapeless weight of the braided languid petals (fig. 10.3).

The ageing Beginning in which specifies twisting of petals, coincides with the allocation beginning etilena. Presenilation can be caused also processing of plants etilenom. It is difficult to define, whether really etilen causes ageing or it simply accelerates this process. At ipomei ageing of fabrics can become the reason of some ' courses ' tonoplasta therefore methionine, the predecessor etilena, leaves from vakuoli in cytoplasm where turns in etilen. Etilen in turn can then destroy a membrane vakuoli, accelerating all process of ageing as a whole.

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