TY - JOUR
T1 - Detailing early shoot growth arrest in Kro-0 x BG-5 hybrids of Arabidopsis thaliana
AU - Sageman-Furnas, Katelyn
AU - Turqueto Duarte, Gustavo
AU - Laitinnen, Roosa A.E.
N1 - Score=10
Publisher Copyright:
© The Author(s) 2024. Published by Oxford University Press on behalf of Japanese Society of Plant Physiologists.
PY - 2024/3/1
Y1 - 2024/3/1
N2 - Shoot growth directly impacts plant productivity. Plants adjust their shoot growth in response to varying environments to maximize resource capture and stress resilience. While several factors controlling shoot growth are known, the complexity of the regulation and the input of the environment are not fully understood. We have investigated shoot growth repression induced by low ambient temperatures in hybrids of Arabidopsis thaliana Kro-0 and BG-5 accessions. To continue our previous studies, we confirmed that the Kro-0 allele of DYNAMIN-RELATED PROTEIN 3B causes stunted shoot growth in the BG-5 background. We also found that shoot growth repression was most pronounced near the apex at a lower temperature and that the cells in the hybrid stem failed to elongate correctly. Furthermore, we observed that shoot growth repression in hybrids depended on light availability. Global gene expression analysis indicated the involvement of hormones, especially strigolactone, associated with the dwarf phenotype. Altogether, this study enhances our knowledge on the genetic, physiological and environmental factors associated with shoot growth regulation.
AB - Shoot growth directly impacts plant productivity. Plants adjust their shoot growth in response to varying environments to maximize resource capture and stress resilience. While several factors controlling shoot growth are known, the complexity of the regulation and the input of the environment are not fully understood. We have investigated shoot growth repression induced by low ambient temperatures in hybrids of Arabidopsis thaliana Kro-0 and BG-5 accessions. To continue our previous studies, we confirmed that the Kro-0 allele of DYNAMIN-RELATED PROTEIN 3B causes stunted shoot growth in the BG-5 background. We also found that shoot growth repression was most pronounced near the apex at a lower temperature and that the cells in the hybrid stem failed to elongate correctly. Furthermore, we observed that shoot growth repression in hybrids depended on light availability. Global gene expression analysis indicated the involvement of hormones, especially strigolactone, associated with the dwarf phenotype. Altogether, this study enhances our knowledge on the genetic, physiological and environmental factors associated with shoot growth regulation.
KW - Arabidopsis thaliana
KW - Shoot growth
KW - Hybrid incompatibility
KW - DYNAMINRELATED PROTEIN 3B
KW - DYNAMIN-RELATED PROTEIN 3B
UR - http://www.scopus.com/inward/record.url?scp=85190833881&partnerID=8YFLogxK
U2 - 10.1093/pcp/pcad167
DO - 10.1093/pcp/pcad167
M3 - Article
SN - 0032-0781
VL - 65
SP - 420
EP - 427
JO - Plant & Cell Physiology
JF - Plant & Cell Physiology
IS - 3
M1 - pcad167
ER -