PMID: 9161033Apr 1, 1997Paper

Programmed cell death in the root cortex of soybean root necrosis mutants

The Plant Journal : for Cell and Molecular Biology
R M KosslakB A Bowen

Abstract

The soybean root necrosis (rn) mutation causes a progressive browning of the root soon after germination that is associated with accumulation of phytoalexins and pathogenesis-related proteins and an increased tolerance to root-borne infection by the fungal pathogen, Phytophthora sojae. Grafting and decapitation experiments indicate that the rn phenotype is root-autonomous at the macroscopic level. However, the onset and severity of browning was modulated in intact plants by exposure to light, as was the extent of lateral root formation, suggesting that both lateral roots and the rn phenotype could be directly or indirectly controlled by similar shoot-derived factors. Browning first occurs in differentiated inner cortical cells adjacent to the stele and is preceded by a wave of autofluorescence that emanates from cortical cells opposite the xylem poles and spreads across the cortex. Before any visible changes in autofluorescence or browning, fragmented DNA was detected by TUNEL (Terminal deoxynucleotidyl transferase-mediated dUTP-digoxigenin nick end labeling) in small clusters of inner cortical cells that subsequently could be distinguished cytologically from neighboring cells throughout rn root development. Inner cortical cell...Continue Reading

Citations

Jul 2, 2008·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·R G PalmerM K Bhattacharyya
Mar 8, 2005·Trends in Plant Science·Wouter G van Doorn, Ernst J Woltering
Mar 5, 2002·The Plant Journal : for Cell and Molecular Biology·Gyung-Hye HuhPaul M Hasegawa
Dec 4, 2003·Molecular Plant-microbe Interactions : MPMI·Stig Uggerhøj AndersenErik Ostergaard Jensen
Dec 14, 2002·Plant Physiology·John GrayGurmukh S Johal
Apr 21, 2004·European Journal of Biochemistry·Cinthya Assunção Guimarães, Rafael Linden
Mar 22, 2008·Genome Génome / Conseil National De Recherches Canada·Reid G PalmerMin Xu
Mar 12, 2004·Annual Review of Phytopathology·D G Gilchrist
Nov 2, 2013·Planta·Waseem Shahri, Inayatullah Tahir
Sep 17, 2003·Proceedings of the National Academy of Sciences of the United States of America·Wim D'HaezeMarcelle Holsters
Mar 10, 2001·Physiologia Plantarum·Erland Liljeroth, Tomas Bryngelsson
Jan 13, 2011·The Plant Journal : for Cell and Molecular Biology·Jong-Jin ParkGynheung An
Oct 28, 2016·Apoptosis : an International Journal on Programmed Cell Death·Márta M-HamvasCsaba Máthé
Dec 1, 2002·The New Phytologist·Masami WatanabeYukio Watanabe

❮ Previous
Next ❯

Related Concepts

Related Feeds

Apoptosis

Apoptosis is a specific process that leads to programmed cell death through the activation of an evolutionary conserved intracellular pathway leading to pathognomic cellular changes distinct from cellular necrosis