Aluminum resistance and cell-wall characteristics of pineapple root apices

2013 ◽  
Vol 176 (5) ◽  
pp. 795-800
Author(s):  
Yong-Hong Lin ◽  
Jen-Hshuan Chen
Keyword(s):  
Cell Wall ◽  
Aluminum Resistance ◽  
Root Apices

scholarly journals Short-Term Boron Deprivation Inhibits Endocytosis of Cell Wall Pectins in Meristematic Cells of Maize and Wheat Root Apices

2002 ◽  
Vol 130 (1) ◽  
pp. 415-421 ◽  
Author(s):  
Qin Yu ◽  
Andrej Hlavacka ◽  
Toru Matoh ◽  
Dieter Volkmann ◽  
Diedrik Menzel ◽  
...  
Keyword(s):  
Cell Wall ◽  
Wheat Root ◽  
Short Term ◽  
Meristematic Cells ◽  
Root Apices

Effects of D-galactose on the ultrastructure of bentgrass root apices

1968 ◽  
Vol 46 (4) ◽  
pp. 391-395 ◽  
Author(s):  
R. M. Endo ◽  
W. W. Thomson ◽  
Emmylou M. Krausman
Keyword(s):  
Cell Wall ◽  
Cell Plate ◽  
Root Cap ◽  
Agrostis Palustris ◽  
Thin Sections ◽  
Cellular Processes ◽  
Growth Inhibitory ◽  
Apparent Reduction ◽  
And Function ◽  
Root Apices

To study the effects of growth-inhibitory concentrations of D-galactose on the morphology and function of organelles, thin sections of galactose-treated, KMnO4-fixed bentgrass (Agrostis palustris L.) root apices were examined in the electron microscope. Inhibitory effects were noted on root cap mucilage formation, cell plate formation, cell wall accretion, and the organelles associated with these processes such as the dictyosomes and the endoplasmic reticulum. These studies suggest that D-galactose inhibits root elongation by not only suppressing the synthesis of cell wall precursors—as evidenced by apparent reduction in the activity of the dictyosomes and root cap mucilage formation—but also the cellular processes involved in cell wall accretion and the formation of the cell plate.

scholarly journals Evaluating the Madeiran wheat germplasm for aluminum resistance using aluminium-induced callose formation in root apices as a marker

2005 ◽  
Vol 27 (3) ◽  
pp. 297-302 ◽  
Author(s):  
Teresa M. M. dos Santos ◽  
Jan J. laski ◽  
Miguel ă. A. Pinheiro de Carvalho ◽  
Gregory J. Taylor ◽  
Maria R. Clemente Vieira
Keyword(s):  
Aluminum Resistance ◽  
Wheat Germplasm ◽  
Callose Formation ◽  
Root Apices

Aluminum resistance in common bean (Phaseolus vulgaris) involves induction and maintenance of citrate exudation from root apices

2010 ◽  
Vol 138 (2) ◽  
pp. 176-190 ◽  
Author(s):  
Andrés Felipe Rangel ◽  
Idupulapati Madhusudana Rao ◽  
Hans-Peter Braun ◽  
Walter Johannes Horst
Keyword(s):  
Phaseolus Vulgaris ◽  
Common Bean ◽  
Aluminum Resistance ◽  
Root Apices ◽  
Citrate Exudation

scholarly journals The High Level of Aluminum Resistance in Signalgrass Is Not Associated with Known Mechanisms of External Aluminum Detoxification in Root Apices

2001 ◽  
Vol 125 (3) ◽  
pp. 1473-1484 ◽  
Author(s):  
Peter Wenzl ◽  
Gloria M. Patiño ◽  
Alba L. Chaves ◽  
Jorge E. Mayer ◽  
Idupulapati M. Rao
Keyword(s):  
Aluminum Resistance ◽  
High Level ◽  
Root Apices

Influence of Cell Wall Composition on the Fossilisation of Bacteria and the Implications for the Search for Early Life Forms

1997 ◽  
Vol 161 ◽  
pp. 491-504 ◽  
Author(s):  
Frances Westall
Keyword(s):  
Cell Wall ◽  
Life Forms ◽  
Cation Binding ◽  
Positive Bacterium ◽  
Gram Positive ◽  
Gram Positive Bacteria ◽  
Transmission Electron ◽  
Hydrothermal Sediments ◽  
Identification Of Bacteria ◽  
The Difference

AbstractThe oldest cell-like structures on Earth are preserved in silicified lagoonal, shallow sea or hydrothermal sediments, such as some Archean formations in Western Australia and South Africa. Previous studies concentrated on the search for organic fossils in Archean rocks. Observations of silicified bacteria (as silica minerals) are scarce for both the Precambrian and the Phanerozoic, but reports of mineral bacteria finds, in general, are increasing. The problems associated with the identification of authentic fossil bacteria and, if possible, closer identification of bacteria type can, in part, be overcome by experimental fossilisation studies. These have shown that not all bacteria fossilise in the same way and, indeed, some seem to be very resistent to fossilisation. This paper deals with a transmission electron microscope investigation of the silicification of four species of bacteria commonly found in the environment. The Gram positiveBacillus laterosporusand its spore produced a robust, durable crust upon silicification, whereas the Gram negativePseudomonas fluorescens, Ps. vesicularis, andPs. acidovoranspresented delicately preserved walls. The greater amount of peptidoglycan, containing abundant metal cation binding sites, in the cell wall of the Gram positive bacterium, probably accounts for the difference in the mode of fossilisation. The Gram positive bacteria are, therefore, probably most likely to be preserved in the terrestrial and extraterrestrial rock record.

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