Cereal Research Communications
Volume/Issue:
Volume 47: Issue 2
Salicylic acid pathway changes in barley plants challenged with either a biotrophic or a necrotrophic pathogen
Authors:
A. Al-Daoude AECS, P. O. Box 6091 Damascus, Syria, Damascus, Syria

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,
E. Al-Shehadah AECS, P. O. Box 6091 Damascus, Syria, Damascus, Syria

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A. Shoaib AECS, P. O. Box 6091 Damascus, Syria, Damascus, Syria

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M. Jawhar AECS, P. O. Box 6091 Damascus, Syria, Damascus, Syria

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M.I.E. Arabi AECS, P. O. Box 6091 Damascus, Syria, Damascus, Syria

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Pages:
324–333
Online Publication Date:
Jun 2019
Publication Date:
01 Jun 2019
Article Category:
Research Article
DOI:
https://doi.org/10.1556/0806.47.2019.04
Keywords:
barley; powdery mildew; spot blotch; defense response; PCR (qPCR); salicylic acid
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The biotrophic Blumeria graminis (Bg) and the necrotrophic Cochliobolus sativus; (Cs) are economically important fungal pathogens of barley globally. To better understand barley mechanisms to resist these pathogens, changes in salicylic acid (SA) and its responsive genes particularly the pathogenesis related PR1, PR2, PR3 and PR5 were evaluated using qRT-PCR across four time points post infection. Data showed that SA contents significantly increased (P = 0.001) in infected plants of both resistant and susceptible genotypes 24 h post inoculation in comparison with non-infected controls. In addition, time-course tests revealed a notable contradiction in the defense-related genes expression patterns between barley and Bg and Cs interactions, showing that expression patterns of the same defense-associated genes were altered in adaptation to different pathogens. PR1 and PR2 genes were highlyactivated inresistant plants infected with the necrotrophic pathogen Cs rather than of the biotrophic one. The uniformity in barley defense response mechanisms could be in convention with the well-accepted notion that these responses are high intense in the resistant genotype. Our work provides useful information on the expected role of SA pathways in barley towards biotrophic and necroptrophic pathogens with different lifestyles.

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Cover Cereal Research Communications
Cereal Research Communications A Quarterly of the Cereal Research Non-Profit Ltd. Company
Print ISSN:
0133-3720
Online ISSN:
1788-9170

 

 

 

Cereal Research Communications
Language English
Size A4
Year of
Foundation		 1973
Volumes
per Year		 1
Issues
per Year		 4
Founder Akadémiai Kiadó
Founder's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245
Publisher Akadémiai Kiadó
Springer Nature Switzerland AG
Publisher's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible
Publisher		 Chief Executive Officer, Akadémiai Kiadó
ISSN 0133-3720 (Print)
ISSN 1788-9170 (Online)

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