| Full text | |
| Author(s): |
Dantas, Luiza Lane Barros
[1, 2]
;
Dourado, Maira Marins
[1]
;
de Lima, Natalia Oliveira
[1]
;
Cavacana, Natale
[1]
;
Nishiyama, Jr., Milton Yutaka
[3]
;
Souza, Glaucia Mendes
[1]
;
Carneiro, Monalisa Sampaio
[4]
;
Caldana, Camila
[5]
;
Hotta, Carlos Takeshi
[1]
Total Authors: 9
|
| Affiliation: | [1] Univ Sao Paulo, Inst Quim, Dept Bioquim, BR-05508000 Sao Paulo, SP - Brazil
[2] John Innes Ctr, Norwich Res Pk, Norwich NR4 7UH, Norfolk - England
[3] Inst Butantan, Lab Especial Toxicol Aplicada, BR-05503900 Sao Paulo, SP - Brazil
[4] Univ Fed Sao Carlos, Ctr Ciencias Agr, Dept Biotecnol & Prod Vegetal & Anim, BR-13600970 Sao Carlos, SP - Brazil
[5] Max Planck Inst Mol Plant Physiol, D-14476 Potsdam - Germany
Total Affiliations: 5
|
| Document type: | Journal article |
| Source: | NEW PHYTOLOGIST; v. 232, n. 4 AUG 2021. |
| Web of Science Citations: | 0 |
| Abstract | |
Most research in plant chronobiology has been done in laboratory conditions. However, laboratories usually fail to mimic natural conditions and their slight fluctuations, highlighting or obfuscating rhythmicity. High-density crops, such as sugarcane (Saccharum hybrid), generate field microenvironments with specific light and temperature regimes resulting from mutual shading. We measured the metabolic and transcriptional rhythms in the leaves of 4-month-old (4 mo) and 9 mo field-grown sugarcane. Most of the assayed rhythms in 9 mo sugarcane peaked >1 h later than in 4 mo sugarcane, including rhythms of the circadian clock gene, LATE ELONGATED HYPOCOTYL (LHY). We hypothesized that older sugarcane perceives dawn later than younger sugarcane as a consequence of self-shading. As a test, we measured LHY rhythms in plants on the east and the west sides of a field. We also tested if a wooden wall built between lines of sugarcane plants changed their rhythms. The LHY peak was delayed in the plants in the west of the field or beyond the wall; both shaded at dawn. We conclude that plants in the same field may have different phases resulting from field microenvironments, impacting important agronomical traits, such as flowering time, stalk weight and number. (AU) | |
| 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: | 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: | 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 |
| 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: | 19/08534-0 - Characterization of the circadian clock of sugarcane genotypes contrasting for sucrose and fiber content |
| Grantee: | Carlos Takeshi Hotta |
| Support type: | Program for Research on Bioenergy (BIOEN) - Regular Program Grants |
| FAPESP's process: | 17/50326-0 - Diurnal regulation of carbon metabolism in plants |
| Grantee: | Carlos Takeshi Hotta |
| Support type: | Regular Research Grants |