P - Y英文單字 - plastid 中文 - EN166

plastid n.【生物學】1.成形粒。2.質體。

They are involved both in the production of mature proteins , acting as processing enzymes , and in the degradation of damaged or non - functional proteins [ 1 “ 8l in plant plastids , proteases function in protein degradation seem to act to adjust the stoichiometry of subunits in supramolecular complexes , as well as to regulate the stoichiometry between different supramolecular complexes in response to environmental changes and process the nuclear - encoded preproteins in the stromal 除了在相關蛋白質轉錄和翻譯方面的調控外，專一降解這些蛋白的蛋白酶活性以及轉錄翻譯量的上升也會加強對這些蛋白質的降解。雖然到目前為止對光系統中蛋白酶的了解尚且不如對光系統中各種多肽以及蛋白色素復合體的了解，但是對類囊體和葉綠體中蛋白酶的研究已經進展到相當深度了。
plastique
And now we can undertake many nasal endoscopies surgery , such as nasal hemostasia , healing of nasal leaking of central spine fluid ( csf ) , plastid of atresia of posterior naris , depression of optic nerve , excision of nasal or sinus tumor , functional endoscopy sinus surgery , combined surgery of anterior basilar tumor etc 目前我科已進開展了鼻內窺鏡下鼻腔止血、腦脊液鼻漏的修補、后鼻孔閉鎖成形術、視神經減壓、鼻腔鼻竇良惡性腫瘤切除、鼻竇炎鼻息肉切除、、前顱底腫瘤的聯合手術等手術
L were studied . during the meiotic process of megasporocyte , the ribosome population diminished greatly in prophase i and restored in metaphase i ; plastids and mitochondria turned unclear dedifferentiation in prophase i and recovered their normal structures redifferentiation in metaphase i . all these proved that cytoplasmic reorganization took place during the megasporogenesis of 發現了小麥大孢子母細胞減數分裂過程中，核糖體密度在前期顯著降低，到中期才完全恢復質體和線粒體也出現了脫分化和再分化。從而證明了小麥的大孢子形成過程中也存在著細胞質改組現象。
The observation by transmission electron microscope indicated that while a . vera l . had been shaded for six months , it showed decreased chloroplast grana and decreased and loosely arranged thylakoid lamellas in its leaf cells and the starch originally accumulated in its leaf plastids declined until it disappeared , presented such underdeveloped inner - membrane systems as endoplasmic reticula and golgiosomes 電鏡觀察結果表明，遮蔭處理6個月后，庫拉索蘆薈葉片細胞中葉綠體基粒數量減少，類囊體片層數目減少且排列疏松，質體中原來積累的淀粉粒逐漸減少直至消失；內質網、高爾基體等內膜系統不發達。
They are involved both in the production of mature proteins , acting as processing enzymes , and in the degradation of damaged or non - functional proteins [ 1 “ 8l in plant plastids , proteases function in protein degradation seem to act to adjust the stoichiometry of subunits in supramolecular complexes , as well as to regulate the stoichiometry between different supramolecular complexes in response to environmental changes and process the nuclear - encoded preproteins in the stromal 除了在相關蛋白質轉錄和翻譯方面的調控外，專一降解這些蛋白的蛋白酶活性以及轉錄翻譯量的上升也會加強對這些蛋白質的降解。雖然到目前為止對光系統中蛋白酶的了解尚且不如對光系統中各種多肽以及蛋白色素復合體的了解，但是對類囊體和葉綠體中蛋白酶的研究已經進展到相當深度了。
Among the three methods used in the experiment of dna extraction , only ctab , adding pvp in the dna isolation step , had effectively reduced the disturbance from fiber or other plastids and extracted suitable genomic dna as template for rapd process . pcr amplifications were performed in a final volume of 25 mm3 containing 0 . 5 units taq polymerase , 2 通過在抽提緩沖液加入2的pvp 、并用異丙醇和乙醇沉淀基因組dna等改良措施， ctab法能避開大量纖維、多糖的影響，有效地從不同屬種的棕櫚科植物的幼嫩葉片中提取并純化了適合rapd的基因組dna 。
Wax precursors are synthesized in the plastids and enlongated to very long acyl - coa chains as direct processors in er . once the very long acyl - coa chains are synthesized , they are converted to cuticular waxes by four different pathways 一般認為蠟質前體是在質體中合成并在內質網中延伸成特長鏈脂酰輔酶a ，合成的特長鏈脂酰輔酶a通過四種不同的途徑轉化成蠟質組成成分。
Proplastid a self - duplicating undifferentiated plastid , about 0 . 5 - 1 m in diameter and found in the meristematic regions of plants . they grow and develop into plastids of different types 前質體：能夠自我復制的沒有分化的質體，直徑約0 . 5 - 1微米，發現于植物分生組織區域。它們生長發育為不同類型的質體。
Leucoplast a colorless plastid , i . e . one not containing chlorophyll or any other pigment . leucoplasts are common in the cells of roots and underground stems and storage organs 白色體：一種無色的質體，不含葉綠素和任何其它色素。白色體多存在于根部細胞、地下莖和儲藏器官中。
Prokaryotes lack organelles such as nucleoli , mitochondria , plastids , golgi apparatus , and do not exhibit cyclosis 原核生物無細胞器，如核仁、線粒體、質體、高爾基體等，不出現胞質環流。
Proteoplast a colorless plastid ( leucoplast ) that stores protein 類蛋白體：指儲存蛋白質的無色質體（白色體）。
Amyloplast a plastid that synthesizes and stores starch grains 淀粉體：一種與合成和儲存淀粉粒有關的質體。
Research progress on plastid pigment from tobacco 煙草中質體色素研究進展
The internal lamellae originate from an invagination of the inner of double membrances that surround the plastid . 片層起源于圍著質體雙層膜的內膜向內折伸。