Inflorescence deficient in abscission controls floral organ abscission in Arabidopsis and identifies a novel family of putative Ligands in Plants

Butenko, Melinka A.Division of Cell and Molecular Biology, University of Oslo, Norway (author)

Abscission is an active process that enables plants to shed unwanted organs. Because the purpose of the flower is to facilitate pollination, it often is abscised after fertilization. We have identified an Arabidopsis ethylene-sensitive mutant, inflorescence deficient in abscission (ida), in which floral organs remain attached to the plant body after the shedding of mature seeds, even though a floral abscission zone develops. The IDA gene, positioned in the genomic DNA flanking the single T-DNA present in the ida line, was identified by complementation. The gene encodes a small protein with an N-terminal signal peptide, suggesting that the IDA protein is the ligand of an unknown receptor involved in the developmental control of floral abscission. We have identified Arabidopsis genes, and cDNAs from a variety of plant species, that encode similar proteins, which are distinct from known ligands. IDA and the IDA-like proteins may represent a new class of ligands in plants

Patterson, Sara E.Department of Horticulture, University of Wisconsin-Madison, USA (author)
Grini, Paul E.Division of Cell and Molecular Biology, University of Oslo, Norway (author)
Stenvik, Grethe-ElisabethDivision of Cell and Molecular Biology, University of Oslo, Norway (author)
Amundsen, Silja S.Division of Cell and Molecular Biology, University of Oslo, Norway (author)
Mandal, AbulHögskolan i Skövde,Institutionen för naturvetenskap(Swepub:his)mana (author)
Aalen, Reidunn B.Division of Cell and Molecular Biology, University of Oslo, Norway (author)
Division of Cell and Molecular Biology, University of Oslo, NorwayDepartment of Horticulture, University of Wisconsin-Madison, USA (creator_code:org_t)

In:The Plant Cell: American Society of Plant Biologists15:10, s. 2296-23071040-46511532-298X

By the author/editor: Butenko, Melinka ...; Patterson, Sara ...; Grini, Paul E.; Stenvik, Grethe- ...; Amundsen, Silja ...; Mandal, Abul; show more...; Aalen, Reidunn B ...; show less...

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