The homeobox gene BREVIPEDICELLUS is a key regulator of inflorescence architecture in Arabidopsis

Proceedings of the National Academy of Sciences of the United States of America
S P VenglatR Datla

Abstract

Flowering plants display a remarkable range of inflorescence architecture, and pedicel characteristics are one of the key contributors to this diversity. However, very little is known about the genes or the pathways that regulate pedicel development. The brevipedicellus (bp) mutant of Arabidopsis thaliana displays a unique phenotype with defects in pedicel development causing downward-pointing flowers and a compact inflorescence architecture. Cloning and molecular analysis of two independent mutant alleles revealed that BP encodes the homeodomain protein KNAT1, a member of the KNOX family. bp-1 is a null allele with deletion of the entire locus, whereas bp-2 has a point mutation that is predicted to result in a truncated protein. In both bp alleles, the pedicels and internodes were compact because of fewer cell divisions; in addition, defects in epidermal and cortical cell differentiation and elongation were found in the affected regions. The downward-pointing pedicels were produced by an asymmetric effect of the bp mutation on the abaxial vs. adaxial sides. Cell differentiation, elongation, and growth were affected more severely on the abaxial than adaxial side, causing the change in the pedicel growth angle. In addition, bp p...Continue Reading

References

Jan 1, 1994·Annual Review of Biochemistry·W J GehringT Bürglin
Jun 11, 1996·Proceedings of the National Academy of Sciences of the United States of America·L DiatchenkoP D Siebert
Nov 1, 1996·Plant Molecular Biology·K A SerikawaP Zambryski
Jun 10, 1998·BioEssays : News and Reviews in Molecular, Cellular and Developmental Biology·R W Williams
May 20, 1999·Molecular Biology and Evolution·G BharathanN Sinha
Mar 9, 2000·Trends in Plant Science·J L Bowman, Y Eshed
Apr 26, 2000·Proceedings of the National Academy of Sciences of the United States of America·C Kappen
Feb 13, 2001·Current Opinion in Plant Biology·I M Sussex, N M Kerk
Feb 13, 2001·BioEssays : News and Reviews in Molecular, Cellular and Developmental Biology·U BrandR Simon
Apr 3, 2001·Nature Reviews. Molecular Cell Biology·S E Clark
Aug 16, 2001·Proceedings of the National Academy of Sciences of the United States of America·T WernerT Schmülling
Sep 6, 2001·Seminars in Cell & Developmental Biology·R Simon

❮ Previous
Next ❯

Citations

May 3, 2013·Development Genes and Evolution·Angelika StammlerStefan Gleissberg
Feb 8, 2006·Plant Molecular Biology·Elisabeth TruernitJim Haseloff
Nov 1, 2008·Plant Molecular Biology·Ryoko MorimotoShigeo Takumi
Oct 11, 2003·Current Opinion in Genetics & Development·Mary E ByrneRobert A Martienssen
Jan 21, 2004·Current Opinion in Plant Biology·Bruce Veit
Mar 8, 2005·Trends in Plant Science·Stephen M Swain, Davinder P Singh
Jan 22, 2003·The Plant Journal : for Cell and Molecular Biology·Julien CurabaGilles Vachon
Oct 14, 2008·Proceedings of the National Academy of Sciences of the United States of America·Gang WuRandall A Kerstetter
Jul 16, 2010·Journal of Experimental Botany·María Jazmín Abraham-JuárezJune Simpson
Dec 6, 2011·Journal of Experimental Botany·Yang LiLin Xu
Oct 12, 2002·Plant Physiology·Olivier HamantVéronique Pautot
Nov 13, 2013·Plant Physiology·Nathalie BolducSarah Hake
Dec 23, 2003·The Plant Cell·Fuquan LiuDaoxin Xie
Jun 27, 2006·The Plant Cell·Enric Belles-BoixVéronique Pautot
Oct 12, 2004·Annual Review of Cell and Developmental Biology·Sarah HakeJulio Ramirez
Nov 15, 2012·BMC Plant Biology·J Peter EtchellsHugh G Dickinson

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.