Cytokinin response factors integrate auxin and cytokinin pathways for female reproductive organ development

M. Cucinotta, S. Manrique, A. Guazzotti, N. Quadrelli, M. Mendes, E. Benková, L. Colombo, Development 143 (2016) 4419–4424.

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Journal Article | Published | English
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Abstract
The developmental programme of the pistil is under the control of both auxin and cytokinin. Crosstalk between these factors converges on regulation of the auxin carrier PIN-FORMED 1 (PIN1). Here, we show that in the triple transcription factor mutant cytokinin response factor 2 (crf2) crf3 crf6 both pistil length and ovule number were reduced. PIN1 expression was also lower in the triple mutant and the phenotypes could not be rescued by exogenous cytokinin application. pin1 complementation studies using genomic PIN1 constructs showed that the pistil phenotypes were only rescued when the PCRE1 domain, to which CRFs bind, was present. Without this domain, pin mutants resemble the crf2 crf3 crf6 triple mutant, indicating the pivotal role of CRFs in auxin-cytokinin crosstalk.
Publishing Year
Date Published
2016-12-01
Journal Title
Development
Acknowledgement
M.C. was funded by a PhD fellowship from the Università degli Studi di Milano-Bicocca and from Ministero dell'Istruzione, dell'Università e della Ricerca (MIUR) [MIUR-PRIN 2012]. L.C. is also supported by MIUR [MIUR-PRIN 2012]. We would like to thank Andrew MacCabe and Edward Kiegle for editing the paper.
Volume
143
Issue
23
Page
4419 - 4424
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Cucinotta M, Manrique S, Guazzotti A, et al. Cytokinin response factors integrate auxin and cytokinin pathways for female reproductive organ development. Development. 2016;143(23):4419-4424. doi:10.1242/dev.143545
Cucinotta, M., Manrique, S., Guazzotti, A., Quadrelli, N., Mendes, M., Benková, E., & Colombo, L. (2016). Cytokinin response factors integrate auxin and cytokinin pathways for female reproductive organ development. Development, 143(23), 4419–4424. https://doi.org/10.1242/dev.143545
Cucinotta, Mara, Silvia Manrique, Andrea Guazzotti, Nadia Quadrelli, Marta Mendes, Eva Benková, and Lucia Colombo. “Cytokinin Response Factors Integrate Auxin and Cytokinin Pathways for Female Reproductive Organ Development.” Development 143, no. 23 (2016): 4419–24. https://doi.org/10.1242/dev.143545.
M. Cucinotta et al., “Cytokinin response factors integrate auxin and cytokinin pathways for female reproductive organ development,” Development, vol. 143, no. 23, pp. 4419–4424, 2016.
Cucinotta M, Manrique S, Guazzotti A, Quadrelli N, Mendes M, Benková E, Colombo L. 2016. Cytokinin response factors integrate auxin and cytokinin pathways for female reproductive organ development. Development. 143(23), 4419–4424.
Cucinotta, Mara, et al. “Cytokinin Response Factors Integrate Auxin and Cytokinin Pathways for Female Reproductive Organ Development.” Development, vol. 143, no. 23, Company of Biologists, 2016, pp. 4419–24, doi:10.1242/dev.143545.

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