Role of ABA and ABI3 in desiccation tolerance.
Science
; 327(5965): 546, 2010 Jan 29.
Article
in En
| MEDLINE
| ID: mdl-20110497
ABSTRACT
We show in bryophytes that abscisic acid (ABA) pretreatment of moss (Physcomitrella patens) cells confers desiccation tolerance. In angiosperms, both ABA and the transcriptional regulator ABSCISIC ACID INSENSITIVE 3 (ABI3) are required to protect the seed during desiccation. ABA was not able to protect moss cells in stable deletion lines of ABI3 (DeltaPpabi3). Hence, moss has the same functional link between ABA, ABI3, and the desiccation tolerance phenotype that is found in angiosperms. Furthermore, we identified 22 genes that were induced during ABA pretreatment in wild-type lines. When their expression was compared with that of DeltaPpabi3 during ABA pretreatment and immediately after desiccation, a new target of ABI3 action appears to be in the recovery period.
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Plant Proteins
/
Transcription Factors
/
Transcriptional Activation
/
Abscisic Acid
/
Gene Expression Regulation, Plant
/
Bryopsida
Type of study:
Prognostic_studies
Language:
En
Journal:
Science
Year:
2010
Document type:
Article