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United States Department of Agriculture

Agricultural Research Service

Title: Phosphorus Stress Induced Genes in Proteoid Roots of White Lupin

Authors
item Li, A - UNIVERSITY OF MINNESOTA
item Udhe, C - UNIVERSITY OF MINNESOTA
item Damen, M - UNIVERSITY OF MINNESOTA
item Allan, D - UNIVERSITY OF MINNESOTA
item Vance, Carroll

Submitted to: American Society of Agronomy Meetings
Publication Type: Abstract Only
Publication Acceptance Date: November 6, 2000
Publication Date: N/A

Technical Abstract: To assess plant molecular control of processes mediating white lupin adaptation to phosphorus (P) stress involving proteoid root formation and organic acid exudation, 1257 expressed sequence tags (ESTs) sere sequenced from a cDNA library made to -P-stressed white lupin roots. Nucleic acid and deduced amino acid analysis of the ESTs showed that 656 were singletons (found only once) and 601 were redundant (found more than once). Based on homology to known proteins, the ESTs were grouped into four main categories: metabolism (34%); cell cycle, plant development (9%); interaction with environment (24%); and unknown (34%). Macro-array experiments are in progress to compare expression of EST under -P and +P conditions in roots and leaves. Expression data will be presented for several genes related to plant growth hormone synthesis.

Last Modified: 10/21/2014
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