LaDAL1 Coordinates Age and Environmental Signals in the Life Cycle of Larix kaempferi

Perennial woody plants are long-lived, and their life-cycle events occur in order in each generation, but what drives the occurrence and restart of these events in their offspring is unknown. Based on its age-dependent expression pattern and function, ( ), a MADS transcription factor has been sugges...

Full description

Saved in:
Bibliographic Details
Published in:International journal of molecular sciences 2022-12, Vol.24 (1), p.426
Main Authors: Li, Xiang-Yi, Ye, Zha-Long, Cheng, Dong-Xia, Zang, Qiao-Lu, Qi, Li-Wang, Li, Wan-Feng
Format: Article
Language:English
Subjects:
age
Communication
larch
life cycle
MADS
perennial
transgeneration
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Perennial woody plants are long-lived, and their life-cycle events occur in order in each generation, but what drives the occurrence and restart of these events in their offspring is unknown. Based on its age-dependent expression pattern and function, ( ), a MADS transcription factor has been suggested to be a time recorder and life-cycle event coordinator. Here, we studied the dynamic spatiotemporal expression pattern of in the life cycle of to analyze the molecular mechanism of life-cycle progression. In full view of the life cycle, transcription was related with life-cycle progression, and its transcript level increased sharply from age 3 to 5 years, which might be the molecular characteristic of the vegetative phase change, and then stayed at a high level. During sexual reproduction, transcript level decreased sequentially during meiosis and embryogenesis, suggesting that meiosis rapidly lowers the age signal, and after fertilization, the age signal was reset to "0" with the embryogenesis. When a seed germinates, the next generation restarts, and the age is re-counted. Altogether, these results not only provide important and novel insights into the life-cycle progression and transgeneration in perennial woody plants, but also advance our understanding of age recording.
ISSN:1422-0067
1661-6596
1422-0067
DOI:10.3390/ijms24010426