Differential vascularization of nematode-induced feeding sites.

Proceedings of the National Academy of Sciences of the United States of America
Stefan HothUlrich Z Hammes

Abstract

Sedentary nematodes are destructive plant pathogens that cause significant yield losses. In the roots of their host plants, cyst nematodes (CNs) and root-knot nematodes (RKNs) induce different, highly specialized feeding sites--syncytia or giant cells (GCs), respectively--to optimize nutrient uptake. We compared the mechanisms by which nutrients are delivered from the model host plant, Arabidopsis, to GCs induced by the RKN Meloidogyne incognita or to syncytia induced by the CN Heterodera schachtii. From previous work, syncytia were known to be symplastically connected to newly formed host phloem composed of sieve elements (SEs) and companion cells. Here we studied the formation of plasmodesmata (PD) during GC and syncytia development by monitoring a viral movement protein that targets branched PD and the development of host phloem during GC formation by applying confocal laser scanning microscopy and immunocytochemistry. Analyses of plants expressing soluble or membrane-anchored green fluorescent protein in their phloem demonstrated symplastic isolation of GCs. GCs were found to be embedded in a tissue that consists exclusively of SEs. These de novo-formed SEs, contained nuclei and were interconnected by secondary PD. A simila...Continue Reading

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Citations

Jun 3, 2009·Journal of Experimental Botany·Julia HofmannFlorian M W Grundler
Oct 25, 2011·Journal of Experimental Botany·Kathrin Wippel, Norbert Sauer
Dec 18, 2013·Journal of Experimental Botany·Derek G BartlemUlrich Z Hammes
Apr 8, 2014·Journal of Bioscience and Bioengineering·Arshana N N AminDerek G Bartlem
Jul 5, 2013·Planta·Tina KyndtJanice de Almeida-Engler
Dec 3, 2015·Current Biology : CB·Benedikt MüllerUlrich Z Hammes
Apr 12, 2013·The New Phytologist·Paulo VieiraJanice de Almeida Engler
Dec 17, 2009·The Plant Journal : for Cell and Molecular Biology·Marta BarcalaCarolina Escobar
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May 23, 2014·Frontiers in Plant Science·Natalia RodiucJanice de Almeida Engler
Nov 18, 2015·Plant, Cell & Environment·Ulrich Z Hammes
Jan 20, 2017·Plant, Cell & Environment·Roberta Ramos CoelhoJanice de Almeida Engler
Apr 7, 2010·Molecular Plant-microbe Interactions : MPMI·Julia HofmannFlorian M W Grundler
Oct 8, 2016·The New Phytologist·Charles W Melnyk
Jul 20, 2019·The Plant Journal : for Cell and Molecular Biology·Julia HolbeinShahid Siddique
Mar 23, 2017·Molecular Plant-microbe Interactions : MPMI·Elena E GanusovaTessa M Burch-Smith
Dec 27, 2017·The Plant Journal : for Cell and Molecular Biology·Geert SmantAska Goverse

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