翻訳と辞書 Words near each other ・ Root Force ・ Root gall nematode ・ Root hair ・ Root Hog or Die (album) ・ Root hog, or die ・ Root Into Europe ・ Root invasion ・ Root invasion (parasitic) ・ Root Lake railway station ・ Root locus ・ Root mean square ・ Root mean square fluctuation ・ Root microbiome ・ Root mucilage ・ Root name server ・ Root nodule ・ Root of all evil ・ Root of ansa cervicalis ・ Root of penis ・ Root of the hair ・ Root of the lung ・ Root of the mesentery ・ Root of Things ・ Root of unity ・ Root of unity modulo n ・ Root pressure ・ Root race ・ Root River ・ Root River (Algoma District) ・ Root River (Kenora District) Dictionary Lists mini英和辞書 mini和英辞書 Webster 1913 Latin-English FOLDOC Wikipedia English ウィキペディア

翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Root nodule ： ウィキペディア英語版 Root nodule Root nodules occur on the roots of plants (primarily Fabaceae) that associate with symbiotic nitrogen-fixing bacteria. Under nitrogen-limiting conditions, capable plants form a symbiotic relationship with a host-specific strain of bacteria known as rhizobia. This process has evolved multiple times within the Fabaceae, as well as in other species found within the Rosid clade. Within legume nodules, nitrogen gas from the atmosphere is converted into ammonia, which is then assimilated into amino acids (the building blocks of proteins), nucleotides (the building blocks of DNA and RNA as well as the important energy molecule ATP), and other cellular constituents such as vitamins, flavones, and hormones. Their ability to fix gaseous nitrogen makes legumes an ideal agricultural organism as their requirement for nitrogen fertilizer is reduced. Indeed high nitrogen content blocks nodule development as there is no benefit for the plant of forming the symbiosis. The energy for splitting the nitrogen gas in the nodule comes from sugar that is translocated from the leaf (a product of photosynthesis). Malate as a breakdown product of sucrose is the direct carbon source for the bacteroid. Nitrogen fixation in the nodule is very oxygen sensitive. Legume nodules harbor an iron containing protein called leghaemoglobin, closely related to animal myoglobin, to facilitate the conversion of nitrogen gas to ammonia.root nodules are present in leguminous plants (sweet pea) ==Root nodule symbiosis== 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「Root nodule」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.