Reversible cytoplasmic rearrangements precede wall apposition, hypersensitive cell death and defense-related gene activation in potato/Phytophthora infestans interactions

Planta ◽  
1994 ◽  
Vol 194 (1) ◽  
Author(s):  
Sibylle Freytag ◽  
Nikolaos Arabatzis ◽  
Klaus Hahlbrock ◽  
Elmon Schmelzer
Keyword(s):  
Cell Death ◽  
Phytophthora Infestans ◽  
Gene Activation ◽  
Related Gene ◽  
Hypersensitive Cell Death ◽  
Defense Related Gene ◽  
Wall Apposition

scholarly journals Jumonji C Domain Protein JMJ705-Mediated Removal of Histone H3 Lysine 27 Trimethylation Is Involved in Defense-Related Gene Activation in Rice

2013 ◽  
Vol 25 (11) ◽  
pp. 4725-4736 ◽  
Author(s):  
T. Li ◽  
X. Chen ◽  
X. Zhong ◽  
Y. Zhao ◽  
X. Liu ◽  
...  
Keyword(s):  
Gene Activation ◽  
Histone H3 ◽  
Related Gene ◽  
Defense Related Gene ◽  
Domain Protein

SPL5, a cell death and defense-related gene, encodes a putative splicing factor 3b subunit 3 (SF3b3) in rice

2011 ◽  
Vol 30 (2) ◽  
pp. 939-949 ◽  
Author(s):  
Xifeng Chen ◽  
Liang Hao ◽  
Jianwei Pan ◽  
Xixi Zheng ◽  
Guanghuai Jiang ◽  
...  
Keyword(s):  
Cell Death ◽  
Splicing Factor ◽  
Related Gene ◽  
Defense Related Gene ◽  
A Cell

scholarly journals Pseudomonas fluorescens PTA-CT2 Triggers Local and Systemic Immune Response Against Botrytis cinerea in Grapevine

2015 ◽  
Vol 28 (10) ◽  
pp. 1117-1129 ◽  
Author(s):  
Charlotte Gruau ◽  
Patricia Trotel-Aziz ◽  
Sandra Villaume ◽  
Fanja Rabenoelina ◽  
Christophe Clément ◽  
...  
Keyword(s):  
Immune Response ◽  
Cell Death ◽  
Pseudomonas Fluorescens ◽  
Botrytis Cinerea ◽  
Defense Responses ◽  
Systemic Resistance ◽  
Related Gene ◽  
Plant Parts ◽  
Defense Related Gene ◽  
Below Ground

Although induced systemic resistance (ISR) is well-documented in the context of plant–beneficial bacteria interactions, knowledge about the local and systemic molecular and biochemical defense responses before or upon pathogen infection in grapevine is very scarce. In this study, we first investigated the capacity of grapevine plants to express immune responses at both above- and below-ground levels upon interaction with a beneficial bacterium, Pseudomonas fluorescens PTA-CT2. We then explored whether the extent of priming state could contribute to the PTA-CT2-induced ISR in Botrytis cinerea–infected leaves. Our data provide evidence that this bacterium colonized grapevine roots but not the above-ground plant parts and altered the plant phenotype that displayed multiple defense responses both locally and systemically. The grapevine roots and leaves exhibited distinct patterns of defense-related gene expression during root colonization by PTA-CT2. Roots responded faster than leaves and some responses were more strongly upregulated in roots than in leaves and vice versa for other genes. These responses appear to be associated with some induction of cell death in roots and a transient expression of HSR, a hypersensitive response-related gene in both local (roots) and systemic (leaves) tissues. However, stilbenic phytoalexin patterns followed opposite trends in roots compared with leaves but no phytoalexin was exuded during plant-bacterium interaction, suggesting that roots could play an important role in the transfer of metabolites contributing to immune response at the systemic level. Unexpectedly, in B. cinerea–infected leaves PTA-CT2-mediated ISR was accompanied in large part by a downregulation of different defense-related genes, including HSR. Only phytoalexins and glutathion-S-transferase 1 transcripts were upregulated, while the expression of anthocyanin biosynthetic genes was maintained at a higher level than the control. This suggests that decreased expression of HSR, as a marker of cell death, and activation of secondary metabolism pathways could be responsible for a reduced B. cinerea colonization capacity in bacterized plants.

scholarly journals Fatty Acid Hydroperoxides and H2O2 in the Execution of Hypersensitive Cell Death in Tobacco Leaves

2005 ◽  
Vol 138 (3) ◽  
pp. 1516-1526 ◽  
Author(s):  
Jean-Luc Montillet ◽  
Sangpen Chamnongpol ◽  
Christine Rustérucci ◽  
James Dat ◽  
Brigitte van de Cotte ◽  
...  
Keyword(s):  
Cell Death ◽  
Fatty Acid ◽  
Hypersensitive Cell Death ◽  
Tobacco Leaves ◽  
Fatty Acid Hydroperoxides
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