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Near-isogenic lines of Triticum aestivum with distinct modes of resistance exhibit dissimilar transcriptional regulation during Diuraphis noxia feeding.

Botha AM, van Eck L, Burger NF, Swanevelder ZH - Biol Open (2014)

Bottom Line: Although the effects of several D. noxia (Dn) resistance genes are known, none have been isolated or characterized.Tolerance is a passive resistance mechanism that acts through repair or de novo synthesis of photosystem proteins.Results further suggest that ethylene-mediated pathways are possibly involved in generating volatile compounds and cell wall fortification during the antixenosic response.

View Article: PubMed Central - PubMed

Affiliation: Department of Genetics, Stellenbosch University, Stellenbosch 7601, South Africa ambo@sun.ac.za.

No MeSH data available.


Related in: MedlinePlus

Effect of D. noxia infestation on the total β-1,3-glucanase activity of susceptible (Tugela) and resistant (Tugela-Dn1, Tugela-Dn2, Tugela-Dn5) near isogenic wheat lines.Values are means ± SD (n = 3).
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f05: Effect of D. noxia infestation on the total β-1,3-glucanase activity of susceptible (Tugela) and resistant (Tugela-Dn1, Tugela-Dn2, Tugela-Dn5) near isogenic wheat lines.Values are means ± SD (n = 3).

Mentions: To elucidate the effect of D. noxia feeding on the NILs, levels of ROS enzymes (peroxidase, LOX and GST) and a SAR marker enzyme (β-1,3-glucanase) were measured in uninfested leaf tissue (Figs 2–5). The activity of peroxidase and GST were significantly higher in the resistant NILsTugela-Dn1 and Tugela-Dn5 after infestation with D. noxia when compared with susceptible Tugela and the tolerant Tugela-Dn2 (Figs 2 and 3). Even though LOX activity was higher in the resistant NILs when compared with the susceptible Tugela, the activity did not differ significantly (P≤0.05) (Fig. 4). Glucanase activity increased in the resistant NILs when compared to the susceptible Tugela after D. noxia feeding (Fig. 5).


Near-isogenic lines of Triticum aestivum with distinct modes of resistance exhibit dissimilar transcriptional regulation during Diuraphis noxia feeding.

Botha AM, van Eck L, Burger NF, Swanevelder ZH - Biol Open (2014)

Effect of D. noxia infestation on the total β-1,3-glucanase activity of susceptible (Tugela) and resistant (Tugela-Dn1, Tugela-Dn2, Tugela-Dn5) near isogenic wheat lines.Values are means ± SD (n = 3).
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4232770&req=5

f05: Effect of D. noxia infestation on the total β-1,3-glucanase activity of susceptible (Tugela) and resistant (Tugela-Dn1, Tugela-Dn2, Tugela-Dn5) near isogenic wheat lines.Values are means ± SD (n = 3).
Mentions: To elucidate the effect of D. noxia feeding on the NILs, levels of ROS enzymes (peroxidase, LOX and GST) and a SAR marker enzyme (β-1,3-glucanase) were measured in uninfested leaf tissue (Figs 2–5). The activity of peroxidase and GST were significantly higher in the resistant NILsTugela-Dn1 and Tugela-Dn5 after infestation with D. noxia when compared with susceptible Tugela and the tolerant Tugela-Dn2 (Figs 2 and 3). Even though LOX activity was higher in the resistant NILs when compared with the susceptible Tugela, the activity did not differ significantly (P≤0.05) (Fig. 4). Glucanase activity increased in the resistant NILs when compared to the susceptible Tugela after D. noxia feeding (Fig. 5).

Bottom Line: Although the effects of several D. noxia (Dn) resistance genes are known, none have been isolated or characterized.Tolerance is a passive resistance mechanism that acts through repair or de novo synthesis of photosystem proteins.Results further suggest that ethylene-mediated pathways are possibly involved in generating volatile compounds and cell wall fortification during the antixenosic response.

View Article: PubMed Central - PubMed

Affiliation: Department of Genetics, Stellenbosch University, Stellenbosch 7601, South Africa ambo@sun.ac.za.

No MeSH data available.


Related in: MedlinePlus