MAPKK kinase and stomata

Photo credit: Science

Interactions between YDA and other stomatal pattern genes in the abaxial epidermis of 7-dpg cotyledons: (A) wild type, (B) ΔN-YDA/+, (C) sdd1-1, (D) sdd1-1;ΔN-YDA/+, (E) tmm-1, (F) tmm-1;ΔN-YDA/+, (G) flp-1, and (H) flp-1;ΔN-YDA/+. Brackets indicate clusters. All images are the same magnification. Scale bar, 50 μm.

Stomatal development and pattern controlled by a MAPKK kinase.

by Bergmann D. C., Lukowitz W., Somerville C. R. (2004)

in Science 304:1494–1497. – 10.1126/science.1096014. –

Abstract/FREE Full Text – View ArticlePubMed – PubMed Abstract | CrossRef Full Text | Google Scholar

http://science.sciencemag.org/content/304/5676/1494.abstract?ijkey=577388e406e343563532353474c6da2ee7c6b3cf&keytype2=tf_ipsecsha

Abstract

Stomata are epidermal structures that modulate gas exchange between a plant and its environment. During development, stomata are specified and positioned nonrandomly by the integration of asymmetric cell divisions and intercellular signaling.

The Arabidopsis mitogen-activated protein kinase kinase kinase gene, YODA, acts as part of a molecular switch controlling cell identities in the epidermis. Null mutations in YODA lead to excess stomata, whereas constitutive activation of YODA eliminated stomata.

Transcriptome analysis of seedlings with altered YODA activity was used to identify potential stomatal regulatory genes. A putative transcription factor from this set was shown to regulate the developmental behavior of stomatal precursors.

MAPKK kinase and stomata

Photo credit: Google

Stomata Vicia Faba Leaf

Stomatal development and pattern controlled by a MAPKK kinase

by Bergmann D.C., Lukowitz W., Somerville C.R. (2004)

in Science 304:1494–1497.

PMID: 15178800

Abstract

Stomata are epidermal structures that modulate gas exchange between a plant and its environment. During development, stomata are specified and positioned nonrandomly by the integration of asymmetric cell divisions and intercellular signaling.

The Arabidopsis mitogen-activated protein kinase kinase kinase gene, YODA, acts as part of a molecular switch controlling cell identities in the epidermis. Null mutations in YODA lead to excess stomata, whereas constitutive activation of YODA eliminated stomata. Transcriptome analysis of seedlings with altered YODA activity was used to identify potential stomatal regulatory genes.

A putative transcription factor from this set was shown to regulate the developmental behavior of stomatal precursors.

See the text: NCBI