Show simple item record Donnison, Iain Gay, Alan Thomas, Howard Edwards, Keith J. Edwards, David Evans, Caron Thomas, Ann Ougham, Helen 2008-12-11T17:06:30Z 2008-12-11T17:06:30Z 2007-02
dc.identifier.citation Donnison , I , Gay , A , Thomas , H , Edwards , K J , Edwards , D , Evans , C , Thomas , A & Ougham , H 2007 , ' Modification of nitrogen remobilisation, grain fill and leaf senescence in maize (Zea mays L.) by transposon insertional mutagenensis in a protease gene ' New Phytologist , vol 173 , no. 3 , pp. 481-494 . DOI: 10.1111/j.1469-8137.2006.01928.x en
dc.identifier.issn 0028-646X
dc.identifier.other PURE: 92570
dc.identifier.other PURE UUID: ffea0b54-9cbd-4765-a2ec-c532c0c82c5e
dc.identifier.other dspace: 2160/1565
dc.description Donnison, I. S., Gay, A. P., Thomas, Howard, Edwards, K. J., Edwards, D., James, C. L., Thomas, A. M., Ougham, H. J. (2007). Modification of nitrogen remobilization, grain fill and leaf senescence in maize (Zea mays) by transposon insertional mutagenensis in a protease gene. New Phytologist, 173 (3), 481-494. Sponsorship: BBSRC RAE2008 en
dc.description.abstract A maize (Zea mays) senescence-associated legumain gene, See2β, was characterized at the physiological and molecular levels to determine its role in senescence and resource allocation. • A reverse-genetics screen of a maize Mutator (Mu) population identified a Mu insertion in See2β. Maize plants homozygous for the insertion were produced. These See2 mutant and sibling wild-type plants were grown under high or low quantities of nitrogen (N). • The early development of both genotypes was similar; however, tassel tip and collar emergence occurred earlier in the mutant. Senescence of the mutant leaves followed a similar pattern to that of wild-type leaves, but at later sampling points mutant plants contained more chlorophyll than wild-type plants and showed a small extension in photosynthetic activity. Total plant weight was higher in the wild-type than in the mutant, and there was a genotype × N interaction. Mutant plants under low N maintained cob weight, in contrast to wild-type plants under the same treatment. • It is concluded, on the basis of transposon mutagenesis, that See2β has an important role in N-use and resource allocation under N-limited conditions, and a minor but significant function in the later stages of senescence. en
dc.format.extent 14 en
dc.language.iso eng
dc.relation.ispartof New Phytologist en
dc.rights en
dc.subject chlorophyll en
dc.subject leaf senescence en
dc.subject legumain en
dc.subject nitrogen remobilization en
dc.subject photosynthesis en
dc.subject source-sink relationship en
dc.subject transposon en
dc.subject mutagenesis en
dc.subject Zea mays (maize) en
dc.title Modification of nitrogen remobilisation, grain fill and leaf senescence in maize (Zea mays L.) by transposon insertional mutagenensis in a protease gene en
dc.type /dk/atira/pure/researchoutput/researchoutputtypes/contributiontojournal/article en
dc.contributor.institution Institute of Biological, Environmental and Rural Sciences en
dc.description.status Peer reviewed en

Files in this item

Files Size Format View

There are no files associated with this item.

This item appears in the following Collection(s)

Show simple item record

Search Cadair

Advanced Search