Premium
Ethylene‐induced hyponastic growth in Arabidopsis thaliana is controlled by ERECTA
Author(s) -
Van Zanten Martijn,
Basten Snoek L.,
Van EckStouten Evelien,
Proveniers Marcel C.G.,
Torii Keiko U.,
Voesenek Laurentius A.C.J.,
Peeters Anton J.M.,
Millenaar Frank F.
Publication year - 2010
Publication title -
the plant journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.058
H-Index - 269
eISSN - 1365-313X
pISSN - 0960-7412
DOI - 10.1111/j.1365-313x.2009.04035.x
Subject(s) - petiole (insect anatomy) , arabidopsis thaliana , biology , arabidopsis , mutant , complementation , ethylene , quantitative trait locus , botany , gene , genetics , biochemistry , hymenoptera , catalysis
Summary Plants can respond quickly and profoundly to detrimental changes in their environment. For example, Arabidopsis thaliana can induce an upward leaf movement response through differential petiole growth (hyponastic growth) to outgrow complete submergence. This response is induced by accumulation of the phytohormone ethylene in the plant. Currently, only limited information is available on how this response is molecularly controlled. In this study, we utilized quantitative trait loci (QTL) analysis of natural genetic variation among Arabidopsis accessions to isolate novel factors controlling constitutive petiole angles and ethylene‐induced hyponastic growth. Analysis of mutants in various backgrounds and complementation analysis of naturally occurring mutant accessions provided evidence that the leucin‐rich repeat receptor‐like Ser/Thr kinase gene, ERECTA , controls ethylene‐induced hyponastic growth. Moreover, ERECTA controls leaf positioning in the absence of ethylene treatment. Our data demonstrate that this is not due to altered ethylene production or sensitivity.