کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8358254 | 1542064 | 2014 | 14 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Programmed cell death: A mechanism for the lysigenous formation of secretory cavities in leaves of Dictamnus dasycarpus
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کلمات کلیدی
DAPIPCDDictamnus dasycarpusRutaceaeTem - این استTerminal deoxynucleotidyl transferase-mediated dUTP nick end labeling - ترمینال deoxynucleotidyl transferase-mediated dUTP نام نهایی پایان نامهFormation - تشکیلTUNEL - تونلSecretory cavities - حفره های مخفیEssential oils - روغن های ضروریtracheary element - عنصر ترسناکProgrammed cell death - مرگ برنامهریزی شده یاختهprogrammed cell death (PCD) - مرگ سلولی برنامه ریزی شده (PCD)Transmission electron microscopy - میکروسکوپ الکترونی عبوری
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم کشاورزی و بیولوژیک
دانش گیاه شناسی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Programmed cell death: A mechanism for the lysigenous formation of secretory cavities in leaves of Dictamnus dasycarpus Programmed cell death: A mechanism for the lysigenous formation of secretory cavities in leaves of Dictamnus dasycarpus](/preview/png/8358254.png)
چکیده انگلیسی
The formation of secretory cavities in Rutaceae has been the subject of great interest. In this study, cytological events that are involved in the lysigenous formation of the secretory cavities in the leaves of Dictamnus dasycarpus are characterized by an interesting pattern of programmed cell death (PCD). During the developmental process, clusters of cells from a single protoepidermal cell embark on different trajectories and undergo different cell death fates: the cell walls of the secretory cells have characteristics of thinning or complete breakdown, while the sheath cells present a predominantly thick-walled feature. A DAPI assay shows deformed nuclei that are further confirmed to be TUNEL-positive. Gel electrophoresis indicates that DNA cleavage is random and does not result in ladder-like DNA fragmentation. Ultrastructurally, several remarkable features of PCD have been determined, such as misshapen nuclei with condensed chromatin and a significantly diffused membrane, degenerated mitochondria and plastids with disturbed membrane systems, multivesicular bodies, plastolysomes, vacuole disruption and lysis of the center secretory cell. Cytological evidence and Nile red stains exhibit abundant essential oils accumulated in degenerated outer secretory cells after the dissolution of the center secretory cell. In addition, explanations of taxonomic importance and the relationship between PCD and oil droplet accumulation in the secretory cavities are also discussed.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Plant Science - Volume 225, August 2014, Pages 147-160
Journal: Plant Science - Volume 225, August 2014, Pages 147-160
نویسندگان
Ya-Fu Zhou, Shao-Li Mao, Si-Feng Li, Xi-Lu Ni, Bin Li, Wen-Zhe Liu,