Sergeeva, Anna, Liu, Hongjiu, Mai, Hans-Jorg, Mettler-Altmann, Tabea, Kiefer, Christiane, Coupland, George and Bauer, Petra (2021). Cytokinin-promoted secondary growth and nutrient storage in the perennial stem zone of Arabis alpina. Plant J., 105 (6). S. 1459 - 1477. HOBOKEN: WILEY. ISSN 1365-313X
Full text not available from this repository.Abstract
Perennial plants maintain their lifespan through several growth seasons. Arabis alpina serves as a model Brassicaceae species to study perennial traits. Lateral stems of A. alpina have a proximal vegetative zone with a dormant bud zone and a distal senescing seed-producing inflorescence zone. We addressed how this zonation is distinguished at the anatomical level, whether it is related to nutrient storage and which signals affect the zonation. We found that the vegetative zone exhibits secondary growth, which we termed the perennial growth zone (PZ). High-molecular-weight carbon compounds accumulate there in cambium and cambium derivatives. Neither vernalization nor flowering were requirements for secondary growth and the sequestration of storage compounds. The inflorescence zone with only primary growth, termed the annual growth zone (AZ), or roots exhibited different storage characteristics. Following cytokinin application cambium activity was enhanced and secondary phloem parenchyma was formed in the PZ and also in the AZ. In transcriptome analysis, cytokinin-related genes represented enriched gene ontology terms and were expressed at a higher level in the PZ than in the AZ. Thus, A. alpina primarily uses the vegetative PZ for nutrient storage, coupled to cytokinin-promoted secondary growth. This finding lays a foundation for future studies addressing signals for perennial growth.
| Item Type: | Journal Article | ||||||||||||||||||||||||||||||||
| Creators: |
|
||||||||||||||||||||||||||||||||
| URN: | urn:nbn:de:hbz:38-577664 | ||||||||||||||||||||||||||||||||
| DOI: | 10.1111/tpj.15123 | ||||||||||||||||||||||||||||||||
| Journal or Publication Title: | Plant J. | ||||||||||||||||||||||||||||||||
| Volume: | 105 | ||||||||||||||||||||||||||||||||
| Number: | 6 | ||||||||||||||||||||||||||||||||
| Page Range: | S. 1459 - 1477 | ||||||||||||||||||||||||||||||||
| Date: | 2021 | ||||||||||||||||||||||||||||||||
| Publisher: | WILEY | ||||||||||||||||||||||||||||||||
| Place of Publication: | HOBOKEN | ||||||||||||||||||||||||||||||||
| ISSN: | 1365-313X | ||||||||||||||||||||||||||||||||
| Language: | English | ||||||||||||||||||||||||||||||||
| Faculty: | Unspecified | ||||||||||||||||||||||||||||||||
| Divisions: | Unspecified | ||||||||||||||||||||||||||||||||
| Subjects: | no entry | ||||||||||||||||||||||||||||||||
| Uncontrolled Keywords: |
|
||||||||||||||||||||||||||||||||
| URI: | http://kups.ub.uni-koeln.de/id/eprint/57766 |
Downloads
Downloads per month over past year
Altmetric
Export
Actions (login required)
 |
View Item |