…These granules are rich in quinones such as plastoquinone, α-tocopheryl quinone, and vitamin K, and contain small amounts of carotenoids and other lipids. Plasto granules are more abundant in etioplasts of etiolated tissues than in mature chloroplasts, and they decrease when etiolated tissues are exposed to light and thylakoids are formed, but increase when green leaves senesce and the thylakoid membrane system breaks down. Therefore, they are thought to serve as a storage site for quinone compounds. The stroma contains areas with few proteins and ribosomes that are highly transparent to electron beams, and thread-like (2.0-2.5 nm thick) or rod-like (5-10 nm long) structures identified as DNA can be seen there. … *Some of the terminology that mentions "Ethiopia" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…この顆粒はプラストキノン,α‐トコフェリルキノン,ビタミンKなどのキノン類に富み,少量のカロチノイドその他の脂質を含む。プラスト顆粒は成熟した葉緑体よりも黄化組織のエチオプラストetioplastに多く含まれ,黄化組織が光を受けチラコイドが形成されるときには減少し,緑葉が老化しチラコイド膜系がこわれるとき増大することから,キノン化合物の貯蔵場所になっているものと考えられている。ストロマにはタンパク質やリボソームが少なく電子線をよく透過させる部域があり,そこにDNAと同定される糸状(太さ2.0~2.5nm)または棒状(長さ5~10nm)の構造が見られる。… ※「エチオプラス」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
>>: Ethiopian Democratic Union
…In contrast, reciprocity between opposing dichot...
…He later became the first president of the Compa...
Hemp, native to Central and Western Asia, blooms ...
A phonetic script that was slightly modified from...
… In the anatomical sense, the foot is distinguis...
…It is also written as Katsuo-ki or Kuzuo-ki. It ...
… [Chokane Hayashi]. … *Some of the terminology t...
Also known as an environmental assessment, prior ...
A data model proposed in 1970 by IBM's Edgar F...
Italian architect and theorist. Born in Bologna. ...
It is one of the old styles of horsemanship, foun...
This refers to the number of crimes that have actu...
…It has many local names such as Akauo (Nagano Pr...
...From this, the previous equation can be expres...
A Polish female harpsichordist and pianist. She de...