Striga hermonthica MAX2 restores branching but not the Very Low Fluence Response in the Arabidopsis thaliana max2 mutant.

Autor: Liu Q; Laboratory of Plant Physiology, Wageningen UR, PO Box 658, 6700 AR, Wageningen, the Netherlands., Zhang Y; Laboratory of Plant Physiology, Wageningen UR, PO Box 658, 6700 AR, Wageningen, the Netherlands., Matusova R; Laboratory of Plant Physiology, Wageningen UR, PO Box 658, 6700 AR, Wageningen, the Netherlands.; Institute of Plant Genetics and Biotechnology, Slovak Academy of Sciences, Nitra, Slovakia., Charnikhova T; Laboratory of Plant Physiology, Wageningen UR, PO Box 658, 6700 AR, Wageningen, the Netherlands., Amini M; Laboratory of Plant Physiology, Wageningen UR, PO Box 658, 6700 AR, Wageningen, the Netherlands., Jamil M; Laboratory of Plant Physiology, Wageningen UR, PO Box 658, 6700 AR, Wageningen, the Netherlands.; Department of Biosciences, COMSATS Institute of Information Technology, Islamabad, Pakistan., Fernandez-Aparicio M; Department of Plant Pathology, Physiology and Weed Science, Virginia Tech., Blacksburg, VA, 24061, USA.; Department of Plant Breeding, Institute for Sustainable Agriculture, IAS-CSIC, Córdoba, 14080, Spain., Huang K; Department of Biology, University of Virginia, Charlottesville, VA, 22904, USA., Timko MP; Department of Biology, University of Virginia, Charlottesville, VA, 22904, USA., Westwood JH; Department of Plant Pathology, Physiology and Weed Science, Virginia Tech., Blacksburg, VA, 24061, USA., Ruyter-Spira C; Laboratory of Plant Physiology, Wageningen UR, PO Box 658, 6700 AR, Wageningen, the Netherlands.; Plant Research International, Business Unit Bioscience, Droevendaalsesteeg 1, 6708 PB, Wageningen, the Netherlands., van der Krol S; Laboratory of Plant Physiology, Wageningen UR, PO Box 658, 6700 AR, Wageningen, the Netherlands., Bouwmeester HJ; Laboratory of Plant Physiology, Wageningen UR, PO Box 658, 6700 AR, Wageningen, the Netherlands.; Centre for Biosystems Genomics, Wageningen, the Netherlands.
Jazyk: angličtina
Zdroj: The New phytologist [New Phytol] 2014 Apr; Vol. 202 (2), pp. 531-541. Date of Electronic Publication: 2014 Jan 31.
DOI: 10.1111/nph.12692
Abstrakt: Seed germination of Striga spp. (witchweeds), one of the world's most destructive parasitic weeds, cannot be induced by light but is specifically induced by strigolactones. It is not known whether Striga uses the same components for strigolactone signaling as host plants, whether it has endogenous strigolactone biosynthesis and whether there is post-germination strigolactone signaling in Striga. Strigolactones could not be detected in in vitro grown Striga, while for host-grown Striga, the strigolactone profile is dominated by a subset of the strigolactones present in the host. Branching of in vitro grown Striga is affected by strigolactone biosynthesis inhibitors. ShMAX2, the Striga ortholog of Arabidopsis MORE AXILLARY BRANCHING 2 (AtMAX2) - which mediates strigolactone signaling - complements several of the Arabidopsis max2-1 phenotypes, including the root and shoot phenotype, the High Irradiance Response and the response to strigolactones. Seed germination of max2-1 complemented with ShMAX2 showed no complementation of the Very Low Fluence Response phenotype of max2-1. Results provide indirect evidence for ShMAX2 functions in Striga. A putative role of ShMAX2 in strigolactone-dependent seed germination of Striga is discussed.
(© 2014 The Authors. New Phytologist © 2014 New Phytologist Trust.)
Databáze: MEDLINE
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