DSpace

Digital.CSIC > Biología y Biomedicina > Centro Nacional de Biotecnología (CNB) > (CNB) Artículos >

Share

EndNote

Impact

Closed Access item Tomato Flower Abnormalities Induced by Low Temperatures Are Associated with Changes of Expression of MADS-Box Genes

Authors:Lozano, Rafael
Angosto, Trinidad
Gómez, Pedro
Payán, Carmen
Capel, Juan
Huijser, Peter
Salinas, Julio
Martínez-Zapater, José M.
Issue Date:May-1998
Publisher:American Society of Plant Physiologists
Citation:Plant Physiology 117(1): 91-100 (1998)
Abstract:Flower and fruit development in tomato (Lycopersicon esculentum Mill.) were severely affected when plants were grown at low temperatures, displaying homeotic and meristic transformations and alterations in the fusion pattern of the organs. Most of these homeotic transformations modified the identity of stamens and carpels, giving rise to intermediate organs. Complete homeotic transformations were rarely found and always affected organs of the reproductive whorls. Meristic transformations were also commonly observed in the reproductive whorls, which developed with an excessive number of organs. Scanning electron microscopy revealed that meristic transformations take place very early in the development of the flower and are related to a significant increase in the floral meristem size. However, homeotic transformations should occur later during the development of the organ primordia. Steady-state levels of transcripts corresponding to tomato MADS-box genesTM4, TM5, TM6, and TAG1 were greatly increased by low temperatures and could be related to these flower abnormalities. Moreover, in situ hybridization analyses showed that low temperatures also altered the stage-specific expression ofTM4.
Publisher version (URL):http://dx.doi.org/10.1104/pp.117.1.91
URI:http://hdl.handle.net/10261/42902
ISSN:0032-0889
E-ISSNmetadata.dc.identifier.doi = DOI:1532-2548
???metadata.dc.identifier.doi???:10.1104/pp.117.1.91
Appears in Collections:(CNB) Artículos

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.