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  Dynamic Precision Phenotyping Reveals Mechanism of Crop Tolerance to Root Herbivory

Qu, W., Robert, C. A. M., Erb, M., Hibbard, B. E., Paven, M., Gleede, T., et al. (2016). Dynamic Precision Phenotyping Reveals Mechanism of Crop Tolerance to Root Herbivory. Plant Physiology, 172(2), 776-788. doi:10.1104/pp.16.00735.

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 Creators:
Qu, Wenchao1, Author
Robert, Christelle A. M.1, Author
Erb, Matthias1, Author
Hibbard, Bruce E.1, Author
Paven, Maxim1, Author
Gleede, Tassilo1, Author
Riehl, Barbara1, Author
Kersting, Lena1, Author
Cankaya, Aylin S.1, Author
Kunert, A. T.2, Author              
Xu, Youwen1, Author
Schueller, Michael J.1, Author
Shea, Colleen1, Author
Alexoff, David1, Author
Lee, So Jeong1, Author
Fowler, Joanna S.1, Author
Ferrieri, Richard A.1, Author
Affiliations:
1external, ou_persistent22              
2Multiphase Chemistry, Max Planck Institute for Chemistry, Max Planck Society, ou_1826290              

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 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 C-11 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.

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Language(s): eng - English
 Dates: 2016
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: ISI: 000391147700013
DOI: 10.1104/pp.16.00735
 Degree: -

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Title: Plant Physiology
  Other : Plant Physiol.
Source Genre: Journal
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Publ. Info: Bethesda, Md. : American Society of Plant Biologists
Pages: - Volume / Issue: 172 (2) Sequence Number: - Start / End Page: 776 - 788 Identifier: ISSN: 0032-0889
CoNE: https://pure.mpg.de/cone/journals/resource/991042744294438