BENCIVENGA, S., S. SIMONINI, Eva FRIMLOVÁ and L. COLOMBO. The Transcription Factors BEL1 and SPL Are Required for Cytokinin and Auxin Signaling During Ovule Development in Arabidopsis. Plant Cell. ROCKVILLE: AMER SOC PLANT BIOLOGISTS, 2012, vol. 24, No 7, p. 2886-2897. ISSN 1040-4651. doi:10.1105/tpc.112.100164.
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Basic information
Original name The Transcription Factors BEL1 and SPL Are Required for Cytokinin and Auxin Signaling During Ovule Development in Arabidopsis
Authors BENCIVENGA, S. (380 Italy), S. SIMONINI (380 Italy), Eva FRIMLOVÁ (703 Slovakia, guarantor, belonging to the institution) and L. COLOMBO (380 Italy).
Edition Plant Cell, ROCKVILLE, AMER SOC PLANT BIOLOGISTS, 2012, 1040-4651.
Other information
Original language English
Type of outcome Article in a journal
Field of Study 10600 1.6 Biological sciences
Country of publisher United States of America
Confidentiality degree is not subject to a state or trade secret
Impact factor Impact factor: 9.251
RIV identification code RIV/00216224:14740/12:00082918
Organization unit Central European Institute of Technology
Doi http://dx.doi.org/10.1105/tpc.112.100164
UT WoS 000308352800016
Keywords in English WILD-TYPE ARABIDOPSIS; PATTERN-FORMATION; HISTIDINE KINASE; ATP/ADP ISOPENTENYLTRANSFERASES; FEMALE GAMETOPHYTE; EARLY SPOROGENESIS; PROXIMAL-DISTAL; ROOT-MERISTEM; GENE ENCODES; CELL-FATE
Tags rivok
Tags International impact, Reviewed
Changed by Changed by: Martina Prášilová, učo 342282. Changed: 30/9/2015 09:56.
Abstract
Hormones, such as auxin and cytokinin, are involved in the complex molecular network that regulates the coordinated development of plant organs. Genes controlling ovule patterning have been identified and studied in detail; however, the roles of auxin and cytokinin in ovule development are largely unknown. Here we show that key cytokinin pathway genes, such as isopentenyltransferase and cytokinin receptors, are expressed during ovule development. Also, in a cre1-12 ahk2-2 ahk3-3 triple mutant with severely reduced cytokinin perception, expression of the auxin efflux facilitator PIN-FORMED 1 (PIN1) was severely reduced. In sporocyteless/nozzle (spl/nzz) mutants, which show a similar phenotype to the cre1-12 ahk2-2 ahk3-3 triple mutant, PIN1 expression is also reduced. Treatment with the exogenous cytokinin N-6-benzylaminopurine also altered both auxin distribution and patterning of the ovule; this process required the homeodomain transcription factor BELL1 (BEL1). Thus, this article shows that cytokinin regulates ovule development through the regulation of PIN1. Furthermore, the transcription factors BEL1 and SPL/NZZ, previously described as key regulators of ovule development, are needed for the auxin and cytokinin signaling pathways for the correct patterning of the ovule.
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EE2.3.20.0043, research and development projectName: Rozvoj lidských zdrojů pro výzkum, vývoj a inovace v oblasti genomiky a proteomiky rostlinných systémů
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