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Evidence that auxin is required for normal seed size and starch synthesis in pea

Citation

McAdam, EL and Meitzel, T and Quittenden, LJ and Davidson, SE and Dalmais, M and Bendahmane, AI and Thompson, R and Smith, JJ and Nichols, DS and Urquhart, S and Gelinas-Marion, A and Aubert, G and Ross, JJ, Evidence that auxin is required for normal seed size and starch synthesis in pea, New Phytologist, 216, (1) pp. 193-204. ISSN 0028-646X (2017) [Refereed Article]


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DOI: doi:10.1111/nph.14690

Abstract

  • In recent years the biosynthesis of auxin has been clarified with the aid of mutations in auxin biosynthesis genes. However, we know little about the effects of these mutations on the seed-filling stage of seed development.
  • Here we investigate a key auxin biosynthesis mutation of the garden pea, which results in auxin deficiency in developing seeds. We exploit the large seed size of this model species, which facilitates the measurement of compounds in individual seeds.
  • The mutation results in small seeds with reduced starch content and a wrinkled phenotype at the dry stage. The phenotypic effects of the mutation were fully reversed by introduction of the wild-type gene as a transgene, and partially reversed by auxin application.
  • The results indicate that auxin is required for normal seed size and starch accumulation in pea, an important grain legume crop.
  • Item Details

    Item Type:Refereed Article
    Keywords:auxin, chlorinated auxin, mutants, Pisum sativum (pea), seed development, starch.\
    Research Division:Biological Sciences
    Research Group:Plant Biology
    Research Field:Plant Cell and Molecular Biology
    Objective Division:Plant Production and Plant Primary Products
    Objective Group:Horticultural Crops
    Objective Field:Vegetables
    Author:McAdam, EL (Dr Erin McAdam)
    Author:Quittenden, LJ (Dr Laura Quittenden)
    Author:Davidson, SE (Dr Sandra Davidson)
    Author:Smith, JJ (Ms Jenny Smith)
    Author:Nichols, DS (Dr David Nichols)
    Author:Urquhart, S (Miss Shelley Urquhart)
    Author:Gelinas-Marion, A (Ms Ariane Gelinas-Marion)
    Author:Ross, JJ (Associate Professor John Ross)
    ID Code:121259
    Year Published:2017
    Web of Science® Times Cited:1
    Deposited By:Central Science Laboratory
    Deposited On:2017-09-20
    Last Modified:2018-01-15
    Downloads:0

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