Ethylene Upregulates Auxin Biosynthesis inArabidopsisSeedlings to Enhance Inhibition of Root Cell Elongation | Zendy

Ranjan Swarup | Zendy; Paula Perry | Zendy; Dik Hagenbeek | Zendy; Dominique Van Der Straeten | Zendy; Gerrit T.S. Beemster | Zendy; Göran Sandberg | Zendy; Rishikesh P. Bhalerao | Zendy; Karin Ljung | Zendy; Malcolm J. Bennett | Zendy

AI Assistant Blog Pricing

Home ZAIA Blog

Open Access

Ethylene Upregulates Auxin Biosynthesis inArabidopsisSeedlings to Enhance Inhibition of Root Cell Elongation

Author(s) -

Ranjan Swarup,

Paula Perry,

Dik Hagenbeek,

Dominique Van Der Straeten,

Gerrit T.S. Beemster,

Göran Sandberg,

Rishikesh P. Bhalerao,

Karin Ljung,

Malcolm J. Bennett

Publication year - 2007

Publication title -

the plant cell

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 5.324

H-Index - 341

eISSN - 1532-298X

pISSN - 1040-4651

DOI - 10.1105/tpc.107.052100

Subject(s) - auxin , ethylene , arabidopsis , elongation , arabidopsis thaliana , biology , lateral root , plant hormone , apex (geometry) , biosynthesis , microbiology and biotechnology , botany , biochemistry , gene , mutant , materials science , ultimate tensile strength , metallurgy , catalysis

Ethylene represents an important regulatory signal for root development. Genetic studies in Arabidopsis thaliana have demonstrated that ethylene inhibition of root growth involves another hormone signal, auxin. This study investigated why auxin was required by ethylene to regulate root growth. We initially observed that ethylene positively controls auxin biosynthesis in the root apex. We subsequently demonstrated that ethylene-regulated root growth is dependent on (1) the transport of auxin from the root apex via the lateral root cap and (2) auxin responses occurring in multiple elongation zone tissues. Detailed growth studies revealed that the ability of the ethylene precursor 1-aminocyclopropane-1-carboxylic acid to inhibit root cell elongation was significantly enhanced in the presence of auxin. We conclude that by upregulating auxin biosynthesis, ethylene facilitates its ability to inhibit root cell expansion.

The content you want is available to Zendy users.

Already have an account? Click here to sign in.

Having issues? You can contact us here

Accelerating Research