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Plant senescence is the process of aging in plants. Plants have both stress-induced and age-related developmental aging. [1] Chlorophyll degradation during leaf senescence reveals the carotenoids, such as anthocyanin and xanthophylls, which are the cause of autumn leaf color in deciduous trees. Leaf senescence has the important function of ...
Yuletide firs are dying from a severe drought that’s plagued parts of the Northeast for weeks — with some farmers losing 25% of this year’s crop and predicting a future shortage.
Jizera Mountains in Central Europe in 2006 Tree dieback because of persistent drought in the Saxonian Vogtland in 2020. Forest dieback (also "Waldsterben", a German loan word, pronounced [ˈvaltˌʃtɛʁbn̩] ⓘ) is a condition in trees or woody plants in which peripheral parts are killed, either by pathogens, parasites or conditions like acid rain, drought, [1] and more.
Hypoxylon canker of shade trees is a secondary disease: a primary factor, such as drought or physical damage, usually causes the dying and decaying of the tree first before the Hypoxylon canker pathogen infects. [5] This will cause the tree to be in stress and potentially start to decay.
Plants that cause illness or death after consuming them are referred to as poisonous plants. The toxins in poisonous plants affect herbivores , and deter them from consuming the plants. Plants cannot move to escape their predators, so they must have other means of protecting themselves from herbivorous animals.
Marcescent leaves may protect some species from water stress or temperature stress. For example, in tropical alpine environments a wide variety of plants in different plant families and different parts of the world have evolved a growth form known as the caulescent rosette, characterized by evergreen rosettes growing above marcescent leaves.
Death, the underworld; "my regrets follow you to the grave"; [2] [3] [7] remembered beyond the tomb [8] Aster: Symbol of love, daintiness, [4] talisman of love, trusting; cheerfulness in old age [8] Astragalus: Your presence softens my pain [5] [2] Azalea: Take care, temperance, [2] [5] [8] fragile, gratitude, passion, Chinese symbols of ...
Plants which flower en masse (gregariously) before dying are known as plietesials. The term hapaxanth is most often in conjunction with describing some of the taxa of Arecaceae (palms) and some species of bamboo, but rarely used otherwise; its antonym is pleonanth. This was first used by Alexander Braun.