Interactions in the Root Environment: An Integrated Approach Proceed

This volume contains a selection of papers presented at the Rothamsted Millennium Conference "Interactions in the Root Environment - an Integrated Approach". The meeting brought together scientists from a range of disciplines interested in the relationshi

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Interactions in the Root Environment: An Integrated Approach Proceedings of the Millenium Conference on Rhizosphere Interactions, IACR-Rothamsted, United Kingdom, 10-12 April, 2001

Edited by

DAVID S. POWLSON GEOFF L. BATEMAN KEITH G. DAVIES JOHN L. GAUNT and

PENNY R. HIRSCH

Reprinted from Plant and Soi!, Volume 232, Nos. 1-2 (2001).

SPRINGER SCIENCE+BUSINESS MEDIA, B.V.

Library of Congress Cataloging-in-Publication Data

A c.I.P. Catalogue record for this book is available from the library of Congress.

ISBN 978-94-010-3925-3 ISBN 978-94-010-0566-1 (eBook) DOI 10.1007/978-94-010-0566-1

Printed an acid-free paper

AII Rights reserved © 2002 Springer Science+Business Media Dordrecht Originally published by Kluwer Academic Publishers in 2002 Softcover reprint ofthe hardcover 1st edition 2002 No part of the material protected by this copyright notice may be reproduced or utilized in any form or by any means, electronic or mechanical, inc1uding photocopying, recording or by any information storage and retrieval system, without written permission from the copyright owner.

Contents

INTERACTIONS AN INTEGRATED

IN THE ROOT ENVIRONMENT : APPROACH

Proceedings ofthe Millenium Conference on Rhizo sphere Interactions , IACR-Rothamsted, United Kingdom. 10-/2 April, 2001 Foreword

Section I . Signalling and recognition in the root environment I . Analysis of N -acyl homoserine-lactone q uorum-sensingmolecules madeby differentstrains and biovarsof Rhizobium leguminosarum containingdifferentsymbioticplasmids J.K Lithgow, Y.E. Danino,J. Jones & J.A. Downie

3

2. Signalling betweenarbuscularmycorrhizalfungi and plants: identificationof a geneexpressed duringearly interactionsby differentialRNA d isplay analysis H . Roussel, D. van Tuinen, P. Franken,S . Gianinazzi & Y. Gianinazzi- Pearson

13

3. Methods for studying the nematophagousfungus Verticillium chlamydosporium in the root environment P.R. Hirsch,S .D. Atkins, T.H. Mauchline, e.O. Morton,KG . Davies & B.R . Kerry

21

4. Does allelopathyoffer realp romise for practicalw eedmanagementand forexplaining rhizosphere interactionsinvolving higherplants? M .A. Birkett,K Chamberlain,A .M . Hooper & J.A. Pickett

31

Section 2. Root structure and fun ction 5. Root proliferation , nitrateinflow and theircarboncosts during nitrogencaptureby competing plants inpatchysoil D . R obinson

41

6. The nutritionalcontrolof rootdevelopment B. Forde & H . Lorenzo

51

7. Effectof phosphorusavailabilityon basalrootshallownessin commonbean H. Liao, G. Rubio, X. Yan, A. Cao, KM. Brown & J.P. Lynch

69

8. A comparisonof structure , developmentand functionin clusterroots of Lupinus albus L. under phosphateand iron stress J. Hagstrom,W.M . James & KR. Skene

81

Section 3. Biologically-mediated processes in the root environment 9. Rhizospherecarbonflow measurement and implications:from isotopesto reportergenes K Killham & e. Yeomans

91

10. Soil andrhizosphereas habitatsfor Pseudomonas inoculants: new knowledgeon distribution, activity andphysiologicalstatederivedfrom micro-scaleand si