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Gene Review

KNAT5  -  homeobox protein knotted-1-like 5

Arabidopsis thaliana

Synonyms: F10N7.150, F10N7_150, KNOTTED1-like homeobox gene 5, TRANSCRIPTION FACTOR
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Disease relevance of KNAT5

  • We used the Affymetrix ATH1 GeneChip containing more than 22,500 probe sets to explore the anaerobic transcriptome of Arabidopsis seedlings kept under anoxia for 6 h in presence or absence of exogenous Suc [1].

High impact information on KNAT5

  • SND1, a NAC Domain Transcription Factor, Is a Key Regulator of Secondary Wall Synthesis in Fibers of Arabidopsis [2].
  • Arabidopsis thaliana rosettes were harvested six times during 12-h-light/12-h-dark treatments to investigate changes in gene expression using ATH1 arrays [3].
  • A light-regulated Arabidopsis thaliana homeobox 1 gene (ATH1) was identified in a transcription factor gene collection [4].
  • Therefore, a comprehensive survey of global gene expression in response to Pi deprivation was done by using Arabidopsis thaliana whole genome Affymetrix gene chip (ATH1) to quantify the spatio-temporal variations in transcript abundance of 22,810 genes [5].
  • The ATH1 Arabidopsis GeneChip from Affymetrix was used to search for transcriptome changes in Arabidopsis associated with the strong expression of transgenes regulated by constitutive promoters [6].

Biological context of KNAT5

  • We evaluated in detail two different Arabidopsis thaliana microarray platforms: our own Genomic Amplicon arrays and the Qiagen long oligonucleotide arrays designed by Operon; furthermore, we cross-validated these arrays against the Affymetrix AG and ATH1 GeneChips [7].

Other interactions of KNAT5

  • Northern analysis shows that although all three genes are expressed in all tissues examined, the level of KNAT3 RNA is highest in young siliques, inflorescences and roots, KNAT4 RNA level is strongest in leaves and young siliques, and KNAT5 RNA level is highest in roots [8].


  1. A genome-wide analysis of the effects of sucrose on gene expression in Arabidopsis seedlings under anoxia. Loreti, E., Poggi, A., Novi, G., Alpi, A., Perata, P. Plant Physiol. (2005) [Pubmed]
  2. SND1, a NAC Domain Transcription Factor, Is a Key Regulator of Secondary Wall Synthesis in Fibers of Arabidopsis. Zhong, R., Demura, T., Ye, Z.H. Plant Cell (2006) [Pubmed]
  3. Sugars and circadian regulation make major contributions to the global regulation of diurnal gene expression in Arabidopsis. Bläsing, O.E., Gibon, Y., Günther, M., Höhne, M., Morcuende, R., Osuna, D., Thimm, O., Usadel, B., Scheible, W.R., Stitt, M. Plant Cell (2005) [Pubmed]
  4. The homeobox gene ATH1 of Arabidopsis is derepressed in the photomorphogenic mutants cop1 and det1. Quaedvlieg, N., Dockx, J., Rook, F., Weisbeek, P., Smeekens, S. Plant Cell (1995) [Pubmed]
  5. A genome-wide transcriptional analysis using Arabidopsis thaliana Affymetrix gene chips determined plant responses to phosphate deprivation. Misson, J., Raghothama, K.G., Jain, A., Jouhet, J., Block, M.A., Bligny, R., Ortet, P., Creff, A., Somerville, S., Rolland, N., Doumas, P., Nacry, P., Herrerra-Estrella, L., Nussaume, L., Thibaud, M.C. Proc. Natl. Acad. Sci. U.S.A. (2005) [Pubmed]
  6. The stability of the Arabidopsis transcriptome in transgenic plants expressing the marker genes nptII and uidA. El Ouakfaoui, S., Miki, B. Plant J. (2005) [Pubmed]
  7. Comparison of transcript profiling on Arabidopsis microarray platform technologies. Pylatuik, J.D., Fobert, P.R. Plant Mol. Biol. (2005) [Pubmed]
  8. Three knotted1-like homeobox genes in Arabidopsis. Serikawa, K.A., Martinez-Laborda, A., Zambryski, P. Plant Mol. Biol. (1996) [Pubmed]
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