Advanced search
Start date
(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Rhythms of Transcription in Field-Grown Sugarcane Are Highly Organ Specific

Full text
de Barros Dantas, Luiza Lane [1, 2] ; Almeida-Jesus, Felipe Marcelo [1] ; de Lima, Natalia Oliveira [1] ; Alves-Lima, Cicero [1] ; Nishiyama-, Jr., Milton Yutaka [3] ; Carneiro, Monalisa Sampaio [4] ; Souza, Glaucia Mendes [1] ; Hotta, Carlos Takeshi [1]
Total Authors: 8
[1] Univ Sao Paulo, Inst Quim, Dept Bioquim, BR-05508000 Sao Paulo, SP - Brazil
[2] Max Planck Inst Mol Plant Physiol, D-14476 Potsdam - Germany
[3] Inst Butantan, Lab Especial Toxicol Aplicada, BR-05503900 Sao Paulo, SP - Brazil
[4] Univ Fed Sao Carlos, Dept Biotecnol & Prod Vegetal & Anim, Ctr Ciencias Agr, BR-13600970 Sao Carlos, SP - Brazil
Total Affiliations: 4
Document type: Journal article
Source: SCIENTIFIC REPORTS; v. 10, n. 1 APR 16 2020.
Web of Science Citations: 3

Circadian clocks improve plant fitness in a rhythmic environment. As each cell has its own circadian clock, we hypothesized that sets of cells with different functions would have distinct rhythmic behaviour. To test this, we investigated whether different organs in field-grown sugarcane follow the same rhythms in transcription. We assayed the transcriptomes of three organs during a day: leaf, a source organ; internodes 1 and 2, sink organs focused on cell division and elongation; and internode 5, a sink organ focused on sucrose storage. The leaf had twice as many rhythmic transcripts (>68%) as internodes, and the rhythmic transcriptomes of the internodes were more like each other than to those of the leaves. Among the transcripts expressed in all organs, only 7.4% showed the same rhythmic pattern. Surprisingly, the central oscillators of these organs - the networks that generate circadian rhythms - had similar dynamics, albeit with different amplitudes. The differences in rhythmic transcriptomes probably arise from amplitude differences in tissue-specific circadian clocks and different sensitivities to environmental cues, highlighted by the sampling under field conditions. The vast differences suggest that we must study tissue-specific circadian clocks in order to understand how the circadian clock increases the fitness of the whole plant. (AU)

FAPESP's process: 15/06260-0 - Organ- and tissue- specific circadian clocks in C4 grasses
Grantee:Carlos Takeshi Hotta
Support type: Program for Research on Bioenergy (BIOEN) - Regular Program Grants
FAPESP's process: 16/06740-4 - Circadian clock caracterization in photosyntetic tissues of plants C4
Grantee:Natalia Oliveira de Lima
Support type: Scholarships in Brazil - Scientific Initiation
FAPESP's process: 13/05301-9 - Study on the interactions between the biological clock and desiccation in photosynthetic eukaryotes
Grantee:Cícero Alves Lima Júnior
Support type: Scholarships in Brazil - Doctorate
FAPESP's process: 11/00818-8 - Development of alternative biological models for the study of sugarcane regulatory networks
Grantee:Carlos Takeshi Hotta
Support type: Program for Research on Bioenergy (BIOEN) - Young Investigators Grants
FAPESP's process: 11/08897-4 - Characterization of the sugarcane circadian clock and its impact on the metabolism
Grantee:Luíza Lane de Barros Dantas
Support type: Scholarships in Brazil - Doctorate