Involvement of proteases induced in cowpea plants by the cowpea rust fungus during the hypersensitive response: a putative form of programmed cell death

1997 ◽  
Vol 75 (4) ◽  
pp. 468
Author(s):  
I D'Silva ◽  
M C Heath
Keyword(s):  
Cell Death ◽  
Programmed Cell Death ◽  
Hypersensitive Response ◽  
Rust Fungus

Inhibition of Rust-induced Hypersensitive Response in Flax Cells by the Microtubule Inhibitor Oryzalin

1997 ◽  
Vol 24 (6) ◽  
pp. 733 ◽  
Author(s):  
Issei Kobayashi ◽  
Yuhko Kobayashi ◽  
Adrienne R. Hardham
Keyword(s):  
Cell Death ◽  
Hypersensitive Response ◽  
Rust Fungus ◽  
Specific Interaction ◽  
Differential Sensitivity ◽  
Incompatible Interaction ◽  
Microtubule Inhibitor ◽  
Mesophyll Cells ◽  
Hypersensitive Cell Death ◽  
Linum Usitatissimum L

Interactions between the flax rust fungus Melampsora lini and flax Linum usitatissimum L. are governed by a gene-for-gene relationship which determines pathogen virulence or avirulence and host resistance or susceptibility. The present study demonstrates differential sensitivity of M. lini and flax to the microtubule depolymerising drug, oryzalin, such that microtubule depolymerisation in flax cells but not in fungal cells could be obtained. Normally, in an incompatible interaction, a rapid hypersensitive response about 24 h after inoculation inhibits fungal development and invasion. However, in an incompatible interaction in the presence of oryzalin, the occurrence of hypersensitive cell death was delayed and its frequency reduced. This allowed a normally avirulent race of M. lini to form haustoria in living host mesophyll cells at a rate and efficiency similar to that achieved by a virulent race in a compatible interaction during the first 36 h after inoculation. After that time, the incidence of hypersensitive cell death increased and further development of the pathogen was arrested. The results indicate that microtubules play a role in effecting rapid and efficient hypersensitive response in the race–cultivar specific interaction between flax and the flax rust fungus.

Pathogen-induced programmed cell death in tobacco

1997 ◽  
Vol 110 (11) ◽  
pp. 1333-1344 ◽  
Author(s):  
R. Mittler ◽  
L. Simon ◽  
E. Lam
Keyword(s):  
Cell Death ◽  
Programmed Cell Death ◽  
Tobacco Mosaic Virus ◽  
Chloroplast Dna ◽  
Mosaic Virus ◽  
Hypersensitive Response ◽  
Nuclear Periphery ◽  
Death Process ◽  
Tobacco Plants ◽  
Systemic Spread

Sacrificing an infected cell or cells in order to prevent systemic spread of a pathogen appears to be a conserved strategy in both plants and animals. We studied some of the morphological and biochemical events that accompany programmed cell death during the hypersensitive response of tobacco plants infected with tobacco mosaic virus. Certain aspects of this cell death process appeared to be similar to those that take place during apoptosis in animal cells. These included condensation and vacuolization of the cytoplasm and cleavage of nuclear DNA to 50 kb fragments. In contrast, internucleosomal fragmentation, condensation of chromatin at the nuclear periphery and apoptotic bodies were not observed in tobacco plants during tobacco mosaic virus-induced hypersensitive response. A unique aspect of programmed cell death during the hypersensitive response of tobacco to tobacco mosaic virus involved an increase in the amount of monomeric chloroplast DNA. Morphological changes to the chloroplast and cytosol of tobacco cells and increase in monomeric chloroplast DNA occurred prior to gross changes in nuclear morphology and significant chromatin cleavage. Our findings suggest that certain aspects of programmed cell death may have been conserved during the evolution of plants and animals.

scholarly journals A Connected Set of Genes Associated with Programmed Cell Death Implicated in Controlling the Hypersensitive Response in Maize

Genetics ◽  
2012 ◽  
Vol 193 (2) ◽  
pp. 609-620 ◽  
Author(s):  
Bode A. Olukolu ◽  
Adisu Negeri ◽  
Rahul Dhawan ◽  
Bala P. Venkata ◽  
Pankaj Sharma ◽  
...  
Keyword(s):  
Cell Death ◽  
Programmed Cell Death ◽  
Hypersensitive Response ◽  
Connected Set

scholarly journals Lazarus1, a DUF300 Protein, Contributes to Programmed Cell Death Associated with Arabidopsis acd11 and the Hypersensitive Response

PLoS ONE ◽  
2010 ◽  
Vol 5 (9) ◽  
pp. e12586 ◽  
Author(s):  
Frederikke G. Malinovsky ◽  
Peter Brodersen ◽  
Berthe Katrine Fiil ◽  
Lea Vig McKinney ◽  
Stephan Thorgrimsen ◽  
...  
Keyword(s):  
Cell Death ◽  
Programmed Cell Death ◽  
Hypersensitive Response

Programmed cell death, mitochondria and the plant hypersensitive response

Nature ◽  
2001 ◽  
Vol 411 (6839) ◽  
pp. 848-853 ◽  
Author(s):  
Eric Lam ◽  
Naohiro Kato ◽  
Michael Lawton
Keyword(s):  
Cell Death ◽  
Programmed Cell Death ◽  
Hypersensitive Response
Sign in / Sign up

Export Citation Format

Share Document