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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Fasciation ： ウィキペディア英語版 Fasciation Fasciation (or cresting) is a relatively rare condition of abnormal growth in vascular plants in which the apical meristem (growing tip), which normally is concentrated around a single point and produces approximately cylindrical tissue, instead becomes elongated perpendicularly to the direction of growth, thus, producing flattened, ribbon-like, crested, or elaborately contorted tissue.〔 DOI: 10.1007/BF02861723 〕 Fasciation may also cause plant parts to increase in weight and volume in some instances.〔 〕 The phenomenon may occur in the stem, root, fruit, or flower head. Some plants are grown and prized aesthetically for their development of fasciation. Any occurrence of fasciation has several possible causes, including hormonal, genetic, bacterial, fungal, viral and environmental causes. ==Causation== Fasciation can be caused by hormonal imbalances in the meristematic cells of plants, which are cells where growth can occur.〔Galun, Esra (2007). (''Plant Patterning: Structural and Molecular Genetic Aspects'' ). World Scientific Publishing Company. p. 333. ISBN 9789812704085〕 Fasciation can also be caused by random genetic mutation. Bacterial and viral infections can also cause fasciation.〔 The bacterial phytopathogen ''Rhodococcus fascians'' has been demonstrated as one cause of fasciation, such as in sweet pea (''Lathyrus odoratus'') plants,〔 〕 but many fasciated plants have tested negative for the bacteria in studies, hence bacterial infection is not an exclusive causation. Additional environmental factors that can cause fasciation include fungi, mite or insect attack and exposure to chemicals.〔 General damage to a plant's growing tip〔 and exposure to cold and frost can also cause fasciation.〔〔 Some plants, such as peas and cockscomb ''Celosia'', may inherit the trait.〔 Fasciation is not contagious,〔 but bacteria that cause fasciation can be spread from infected plants to others from contact with wounds on infected plants and from water that carries the bacteria to other plants. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Fasciation」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.