scholarly journals TaPCNA plays a role in programmed cell death after UV-B exposure in wheat (Triticum aestivum)

2021 ◽  
Author(s):  
Meiting Du ◽  
Ying Zhang ◽  
Huize Chen ◽  
Rong Han
Keyword(s):  
Triticum Aestivum ◽  
Cell Death ◽  
Programmed Cell Death

scholarly journals Mannose inhibition of nitrate uptake by wheat roots

2011 ◽  
Vol 79 (2) ◽  
pp. 107-110
Author(s):  
Jin Zhi Li ◽  
William John Cram ◽  
Guang Yuan He
Keyword(s):  
Triticum Aestivum ◽  
Cell Death ◽  
Steady State ◽  
Programmed Cell Death ◽  
Nitrate Uptake ◽  
Atp Depletion ◽  
Invasive Technique ◽  
Wheat Roots ◽  
Control Value ◽  
Non Invasive

The effect of mannose on nitrate uptake was investigated by a new non-invasive technique. Under normal condition, nitrate uptake by wheat (<em>Triticum aestivum</em> L.) roots was about 1-7 µmol gfwt<sup>-1</sup> h<sup>-1</sup>. After the addition of 10 mM mannose, net nitrate influx by wheat roots started to decrease and reached a new steady state at -40 ±50% of the control value after 73 min. After mannose supplied for 2 h, its removal caused net nitrate influx to be recovered to an original rate. Therefore, the inhibition of mannose on nitrate uptake is not due to the onset of programmed cell death because it starts too rapidly and it is reversible, however, it is probably due to Pi and consequent ATP depletion.

Evidence of ceased programmed cell death in metaphloem sieve elements in the developing caryopsis of Triticum aestivum L.

PROTOPLASMA ◽  
2008 ◽  
Vol 234 (1-4) ◽  
pp. 87-96 ◽  
Author(s):  
Likai Wang ◽  
Zhuqing Zhou ◽  
Xuefang Song ◽  
Jiwei Li ◽  
Xiangyi Deng ◽  
...  
Keyword(s):  
Triticum Aestivum ◽  
Cell Death ◽  
Programmed Cell Death ◽  
Triticum Aestivum L ◽  
Sieve Elements

Programmed cell death in wheat (Triticum aestivum L.) endosperm cells is affected by drought stress

PROTOPLASMA ◽  
2018 ◽  
Vol 255 (4) ◽  
pp. 1039-1052 ◽  
Author(s):  
Chao Li ◽  
Cheng Li ◽  
Bingbing Wang ◽  
Runqi Zhang ◽  
Kaiyong Fu ◽  
...  
Keyword(s):  
Triticum Aestivum ◽  
Cell Death ◽  
Drought Stress ◽  
Programmed Cell Death ◽  
Triticum Aestivum L

Study on programmed cell death and dynamic changes of starch accumulation in pericarp cells of Triticum aestivum L.*

PROTOPLASMA ◽  
2009 ◽  
Vol 236 (1-4) ◽  
pp. 49-58 ◽  
Author(s):  
Zhuqing Zhou ◽  
Likai Wang ◽  
Jiwei Li ◽  
Xuefang Song ◽  
Chaonan Yang
Keyword(s):  
Triticum Aestivum ◽  
Cell Death ◽  
Programmed Cell Death ◽  
Triticum Aestivum L ◽  
Starch Accumulation ◽  
Dynamic Changes

The release of cytochrome c and the regulation of the programmed cell death progress in the endosperm of winter wheat (Triticum aestivum L.) under waterlogging

PROTOPLASMA ◽  
2018 ◽  
Vol 255 (6) ◽  
pp. 1651-1665 ◽  
Author(s):  
Yuan-Hong Qi ◽  
Fang-Fang Mao ◽  
Zhu-Qing Zhou ◽  
Dong-Cheng Liu ◽  
Min-Yu ◽  
...  
Keyword(s):  
Triticum Aestivum ◽  
Cell Death ◽  
Cytochrome C ◽  
Programmed Cell Death ◽  
Winter Wheat ◽  
Triticum Aestivum L

Aerenchyma formation: programmed cell death in adventitious roots of winter wheat (Triticum aestivum) under waterlogging

2010 ◽  
Vol 37 (8) ◽  
pp. 748 ◽  
Author(s):  
Zhen Jiang ◽  
Xue-Fang Song ◽  
Zhu-Qing Zhou ◽  
Li-Kai Wang ◽  
Ji-Wei Li ◽  
...  
Keyword(s):  
Triticum Aestivum ◽  
Cell Death ◽  
Plasma Membrane ◽  
Programmed Cell Death ◽  
Chromatin Condensation ◽  
Cortical Cell ◽  
Triticum Aestivum L ◽  
Morphological Development ◽  
Acid Phosphatases ◽  
Aerenchyma Formation

This study determined the characteristics of cortical cell death in wheat (Triticum aestivum L.) roots during programmed cell death (PCD) and the relationship between PCD and acid phosphatases. An examination of morphological development by light microscrope revealed that aerenchyma formed in roots waterlogged for 24 h and well developed aerenchyma formed in roots waterlogged for 120 h. The first detectable events were observed by electron microscopy and included plasma membrane invagination and the appearance of vesicles between the plasma membrane and the cell wall. Later, chromatin condensation and double-membrane-bound structures resembling autophagosomes were observed. The activity of acid phosphatases gradually increased during waterlogging and was present during the entire process of cell death. These observations suggest that cortical cell death during aerenchyma formation induced by waterlogging was a form of PCD. Acid phosphatases play an important role in PCD induced by waterlogging, being responsible for the hydrolysis of cell components at the later stages of PCD.

scholarly journals Bacterial putative metacaspase structure from Geobacter sulfureducens as a template for homology modeling of type II Triticum aestivum metacaspase (TaeMCAII).

2012 ◽  
Vol 59 (3) ◽  
Author(s):  
Malgorzata Z Dudkiewicz ◽  
Ewa Piszczek
Keyword(s):  
Triticum Aestivum ◽  
Cell Death ◽  
Reaction Mechanism ◽  
Programmed Cell Death ◽  
Substrate Specificity ◽  
Homology Modeling ◽  
Cysteine Proteases ◽  
Biochemical Data ◽  
Type Ii ◽  
Homology Models

Metacaspases, cysteine proteases belonging to the peptidase C14 family, are suspected of being involved in the programmed cell death of plants, although their sequences and substrate specificity differ from those of animal caspases. At present, the knowledge on the metacaspase reaction mechanism is based only on biochemical data and homology models constructed on caspase templates. Here we propose a novel template for metacaspase modeling and demonstrate important advantages in comparison to the conventionally used caspase templates. We also point out the connection between plant and bacterial metacaspases, underlining the prokaryotic roots of Programmed Cell Death (PCD).

scholarly journals Hypoxia-Induced Programmed Cell Death in Root-Tip Meristematic Cells of Triticum aestivum L.

2015 ◽  
Vol 57 (1) ◽  
pp. 51-61
Author(s):  
Nan Pang ◽  
Feixiong Zhang
Keyword(s):  
Hydrogen Peroxide ◽  
Triticum Aestivum ◽  
Cell Death ◽  
Programmed Cell Death ◽  
Morphological Changes ◽  
Chromatin Condensation ◽  
Root Tip ◽  
Nuclear Condensation ◽  
Obvious Effect ◽  
Meristematic Cells

Abstract In this study, wheat (Triticum aestivum L.) roots were treated with hypoxic water. The staining of cell preparations with DAPI revealed morphological changes of the cells such as nuclear condensation, deformation and fragmentation. Under TEM, cellular membrane shrinkage and breakage, chromatin condensation and apoptotic-like bodies were displayed. The number of mitochondria increased dramatically; their cristae were damaged; the interior became a cavitation and only some flocculent materials were distributed. Indirect immunofluorescence staining indicated that cytochrome C diffused from mitochondria to nucleoplasm and cytoplasm. TUNEL positive nuclei indicated double strand breaks of DNA. DAB staining was used for the identification of hydrogen peroxide and examination showed that the longer the treating time, the darker the staining of the meristematic zones of the roots which suggested the increased accumulation of these Reactive Oxygen Species (ROS). The elevation of hydrogen peroxide production was paralleled with the increase of SOD and POD activities. A negative correlation between the exposure time under hypoxia and the contents of soluble proteins was found. No obvious effect of hypoxia on MDA was established. The obtained results demonstrate that hypoxia causes programmed cell death in the root-tip meristematic cells of Triticum aestivum L. which is most probably attributed to the accumulation of large amounts of ROS.

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