Evidence for intra- and extra-protoplasmic feruloylation and cross-linking in wheat seedling roots

Planta ◽  
2008 ◽  
Vol 229 (2) ◽  
pp. 343-355 ◽  
Author(s):  
Lucia Ilenia Mastrangelo ◽  
Marcello Salvatore Lenucci ◽  
Gabriella Piro ◽  
Giuseppe Dalessandro
Keyword(s):  
Wheat Seedling ◽  
Cross Linking ◽  
Seedling Roots ◽  
Wheat Seedling Roots

The Effect of Salicylic Acid on Resistance in Wheat (Triticum aestivum) Seedling Roots Against the Take-All Fungus, Gaeumannomyces graminis var tritici

1996 ◽  
Vol 44 (4) ◽  
pp. 499 ◽  
Author(s):  
S Seah ◽  
K Sivasithamparam ◽  
DW Turner
Keyword(s):  
Triticum Aestivum ◽  
Salicylic Acid ◽  
Wheat Seedling ◽  
Triticum Aestivum L ◽  
Gaeumannomyces Graminis ◽  
Resistance Response ◽  
Wheat Seedlings ◽  
Seedling Roots ◽  
Wheat Seedling Roots ◽  
Take All

The effect of salicylic acid (SA) applied as foliar dip, foliar wipe, root drench or pre-germination soak on the susceptibility of wheat (Triticum aestivum L.) seedlings to Gaeumannomyces graminis (Sacc.) Arx & Olivier var. tritici Walker (take-all fungus, Ggt) was studied. It was hypothesised that an increase in SA concentration applied using these methods would increase the resistance in wheat seedling roots against Ggt. Leaves (by foliar wipe and foliar dip) and roots (by root drench) of 1-2-week-old wheat seedlings grown in Lancelin sand, were treated with 0, 0.1 or 1 mM SA, and treatments of 0, 0.1 or 0.5 mM SA were applied in a pre-germination soak method. Ggt infection reduced (P Ͱ4 0.05) chlorophyll content and concentration and root length (P Ͱ4 0.10). Experiments that were conducted suggested that the SA treatments failed to induce a resistance response because they did not stimulate phenylalanine ammonia-lyase and peroxidase activities in the wheat seedling roots. Therefore, SA applied using these methods was not effective in reducing the susceptibility of wheat seedlings to Ggt. The chemical or biological induction of resistance in plant roots and its applicability as a root disease control strategy requires further clarification.

scholarly journals Study of the Effect of Azospirillum Lectins on the Formation of Hydrogen Peroxide in Wheat Seedling Roots

2012 ◽  
Vol 12 (4) ◽  
pp. 56-63
Author(s):  
S. A. Alen’kina ◽  
◽  
K. A. Trutneva ◽  
V. А. Velikov ◽  
V. E. Nikitina ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Azospirillum Brasilense ◽  
Wheat Seedling ◽  
Oxalate Oxidase ◽  
Lectin Activity ◽  
Production Of Hydrogen ◽  
Seedling Roots ◽  
Azospirillum Brasilense Sp7 ◽  
Wheat Seedling Roots ◽  
Adaptation Processes

We show that the lectins isolated from the surface of the nitrogenfixing soil bacterium Azospirillum brasilense Sp7 and its mutant defective in lectin activity, A. brasilense Sp7.2.3., can regulate the production of hydrogen peroxide in wheat seedling roots, which is associated with the activation of superoxide dismutase, peroxidase and oxalate oxidase, as well as with the inhibition of catalase activity. We show that activation of oxalate oxidase is the most rapidly inducible pathway for the formation of hydrogen peroxide in wheat seedling roots under the effect of lectins. The obtained data indicate that the Azospirillum lectins can act as inducers of adaptation processes in wheat seedling roots.

Comparative assessment of inductive effects of Azospirillum lectins with different antigenic properties on the signal systems of wheat seedling roots

Microbiology ◽  
2014 ◽  
Vol 83 (3) ◽  
pp. 262-269 ◽  
Author(s):  
S. A. Alen’kina ◽  
L. P. Petrova ◽  
M. K. Sokolova ◽  
M. P. Chernyshova ◽  
K. A. Trutneva ◽  
...  
Keyword(s):  
Wheat Seedling ◽  
Comparative Assessment ◽  
Signal Systems ◽  
Antigenic Properties ◽  
Inductive Effects ◽  
Seedling Roots ◽  
Wheat Seedling Roots

Regulation by Azospirillum lectins of the activity of antioxidant enzymes in wheat seedling roots under short-term stresses

2018 ◽  
Vol 41 (3) ◽  
pp. 579-587 ◽  
Author(s):  
Svetlana A. Alen’kina ◽  
Nikita I. Romanov ◽  
Valentina E. Nikitina
Keyword(s):  
Antioxidant Enzymes ◽  
Wheat Seedling ◽  
Short Term ◽  
Seedling Roots ◽  
Wheat Seedling Roots

Bidirectional Zn-Fluxes and Compartmentation in Wheat Seedling Roots

1988 ◽  
Vol 132 (3) ◽  
pp. 312-315 ◽  
Author(s):  
Guillermo E. Santa María ◽  
Daniel H. Cogliatti
Keyword(s):  
Wheat Seedling ◽  
Seedling Roots ◽  
Wheat Seedling Roots
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