The cell wall-modifying xyloglucan endotransglycosylase/hydrolase LeXTH1 is expressed during the defence reaction of tomato against the plant parasite Cuscuta reflexa

Plant Biology
M AlbertR Kaldenhoff

Abstract

A suppressive subtractive hybridization technique was used to identify genes, which were induced during the early phases of the interaction between dodder (Cuscuta reflexa), a phanerogamic parasite, and its incompatible host plant tomato. One of the identified genes encodes a tomato xyloglucan endotransglycosylase/hydrolase (XTH)--an enzyme involved in cell wall elongation and restructuring. The corresponding LeXTH1 mRNA accumulated 6 h after attachment of the parasite. In contrast, wounding did not influence the expression level. Subsequent to LeXTH1 mRNA accumulation, an increase in XTH activity at the infection sites as well as in adjacent tissues was observed. The effect of IAA on LeXTH1 expression was analyzed because the concentration of this phytohormone is known to increase in the tomato tissue during the interaction with the parasite. LeXTH1 mRNA accumulation was in fact induced by external application of auxin. However, in the auxin-insensitive tomato mutant diageotropica, Cuscuta induced LeXTH1-mRNA accumulated with a time course similar to wild type tomato. Thus, auxin appears not to be an essential signal for infection-induced LeXTH1 activation. Our data suggest a role for xyloglucan transglycosylation in defence r...Continue Reading

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Citations

Nov 9, 2010·BMC Evolutionary Biology·Luiz Eduardo V Del Bem, Michel G A Vincentz
Jan 24, 2014·Plant Molecular Biology·Shankar R PantVincent P Klink
Feb 9, 2007·The New Phytologist·N RispailD Rubiales
Mar 1, 2007·Molecular Plant Pathology·Petra M HoutermanMartijn Rep
Nov 2, 2006·The Plant Journal : for Cell and Molecular Biology·Markus AlbertRalf Kaldenhoff
Nov 26, 2009·Plant, Cell & Environment·Justin B RunyonConsuelo M De Moraes
Oct 15, 2013·Physiologia Plantarum·Tirupaati Swaroopa Rani, Appa Rao Podile
Jun 5, 2010·Plant Biology·M AlbertR Kaldenhoff
Sep 8, 2010·Plant Signaling & Behavior·Markus AlbertRalf Kaldenhoff
Feb 24, 2015·Frontiers in Plant Science·Bettina KaiserMarkus Albert
Dec 25, 2016·Plant Signaling & Behavior·Vincent P KlinkGary W Lawrence
Jan 30, 2018·Plant Biotechnology Journal·Balkrishna A ShindeAvinash C Kamble
Nov 30, 2019·Frontiers in Plant Science·Kohki Shimizu, Koh Aoki
Apr 2, 2021·Plant Physiology·Markus AlbertMichael P Timko
Oct 27, 2007·Journal of Agricultural and Food Chemistry·Eva Miedes, Ester P Lorences

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