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Plant Physiol

Title:		Dynamic Precision Phenotyping Reveals Mechanism of Crop Tolerance to Root Herbivory
Author(s):		Qu W; Robert CA; Erb M; Hibbard BE; Paven M; Gleede T; Riehl B; Kersting L; Cankaya AS; Kunert AT; Xu Y; Schueller MJ; Shea C; Alexoff D; Lee SJ; Fowler JS; Ferrieri RA;
Address:		"Department of Biology, Brookhaven National Laboratory, Upton, New York 11973 (W.Q., Y.X., M.J.S., C.S., D.A., S.J.L., J.S.F., R.A.F.);Biotic Interactions, Institute of Plant Sciences, University of Bern, 3013 Bern, Switzerland (C.A.M.R., M.E.);Plant Genetics Research Unit, United States Department of Agriculture Agricultural Research Service, University of Missouri, Columbia, Missouri 65211 (B.E.H.); andInstitut fur Kernchemie, Johannes Gutenberg-Universitat, 55128 Mainz, Germany (M.P., T.G., B.R., L.K., A.S.C., A.T.K.). Department of Biology, Brookhaven National Laboratory, Upton, New York 11973 (W.Q., Y.X., M.J.S., C.S., D.A., S.J.L., J.S.F., R.A.F.);Biotic Interactions, Institute of Plant Sciences, University of Bern, 3013 Bern, Switzerland (C.A.M.R., M.E.);Plant Genetics Research Unit, United States Department of Agriculture Agricultural Research Service, University of Missouri, Columbia, Missouri 65211 (B.E.H.); andInstitut fur Kernchemie, Johannes Gutenberg-Universitat, 55128 Mainz, Germany (M.P., T.G., B.R., L.K., A.S.C., A.T.K.) ferrierir@missouri.edu"
Journal Title:		Plant Physiol
Year:		2016
Volume:		20160712
Issue:		2
Page Number:		776 - 788
DOI:		10.1104/pp.16.00735
ISSN/ISBN:		1532-2548 (Electronic) 0032-0889 (Print) 0032-0889 (Linking)
Abstract:		"The western corn rootworm (WCR; Diabrotica virgifera virgifera LeConte) is a major pest of maize (Zea mays) that is well adapted to most crop management strategies. Breeding for tolerance is a promising alternative to combat WCR but is currently constrained by a lack of physiological understanding and phenotyping tools. We developed dynamic precision phenotyping approaches using (11)C with positron emission tomography, root autoradiography, and radiometabolite flux analysis to understand maize tolerance to WCR Our results reveal that WCR attack induces specific patterns of lateral root growth that are associated with a shift in auxin biosynthesis from indole-3-pyruvic acid to indole-3-acetonitrile. WCR attack also increases transport of newly synthesized amino acids to the roots, including the accumulation of Gln. Finally, the regrowth zones of WCR-attacked roots show an increase in Gln turnover, which strongly correlates with the induction of indole-3-acetonitrile-dependent auxin biosynthesis. In summary, our findings identify local changes in the auxin biosynthesis flux network as a promising marker for induced WCR tolerance"
Keywords:		"Amino Acids/biosynthesis Animals Biological Transport Carbon Radioisotopes/metabolism Coleoptera/*physiology Crops, Agricultural/genetics/metabolism/*parasitology Glutamine/metabolism Herbivory/physiology Host-Parasite Interactions Indoleacetic Acids/meta;"
Notes:		"MedlineQu, Wenchao Robert, Christelle A M Erb, Matthias Hibbard, Bruce E Paven, Maxim Gleede, Tassilo Riehl, Barbara Kersting, Lena Cankaya, Aylin S Kunert, Anna T Xu, Youwen Schueller, Michael J Shea, Colleen Alexoff, David Lee, So Jeong Fowler, Joanna S Ferrieri, Richard A eng Research Support, Non-U.S. Gov't Research Support, U.S. Gov't, Non-P.H.S. 2016/07/14 Plant Physiol. 2016 Oct; 172(2):776-788. doi: 10.1104/pp.16.00735. Epub 2016 Jul 12"