TY - JOUR
T1 - Modulation of Abscisic Acid Signal Transduction and Biosynthesis by an Sm-like Protein in Arabidopsis
AU - Xiong, Liming
AU - Gong, Zhizhong
AU - Rock, Christopher D.
AU - Subramanian, Senthil
AU - Guo, Yan
AU - Xu, Wenying
AU - Galbraith, David
AU - Zhu, Jian Kang
N1 - Funding Information:
We sincerely thank R.T. Leonard and R.A. Bressan for critical reading of the manuscript, V. Hugouvieux and J.I. Schroeder for providing the pAS-ABH1 and pAS-CBC20 yeast strains, and B. Stevenson and T.G. Lu for excellent technical assistance. Supported by National Science Foundation grants IBN-9808398 and DBI-9813360.
PY - 2001/12/1
Y1 - 2001/12/1
N2 - The phytohormone abscisic acid (ABA) regulates plant growth and development as well as stress tolerance. The Arabidopsis sad1 (supersensitive to ABA and drought) mutation increases plant sensitivity to drought stress and ABA in seed germination, root growth, and the expression of some stress-responsive genes. sad1 plants are also defective in the positive feedback regulation of ABA biosynthesis genes by ABA and are impaired in drought stress induction of ABA biosynthesis. SAD1 encodes a polypeptide similar to multifunctional Sm-like snRNP proteins that are required for mRNA splicing, export, and degradation. These results suggest a critical role for mRNA metabolism in the control of ABA signaling as well as in the regulation of ABA homeostasis.
AB - The phytohormone abscisic acid (ABA) regulates plant growth and development as well as stress tolerance. The Arabidopsis sad1 (supersensitive to ABA and drought) mutation increases plant sensitivity to drought stress and ABA in seed germination, root growth, and the expression of some stress-responsive genes. sad1 plants are also defective in the positive feedback regulation of ABA biosynthesis genes by ABA and are impaired in drought stress induction of ABA biosynthesis. SAD1 encodes a polypeptide similar to multifunctional Sm-like snRNP proteins that are required for mRNA splicing, export, and degradation. These results suggest a critical role for mRNA metabolism in the control of ABA signaling as well as in the regulation of ABA homeostasis.
UR - http://www.scopus.com/inward/record.url?scp=0035654544&partnerID=8YFLogxK
U2 - 10.1016/S1534-5807(01)00087-9
DO - 10.1016/S1534-5807(01)00087-9
M3 - Article
C2 - 11740939
AN - SCOPUS:0035654544
SN - 1534-5807
VL - 1
SP - 771
EP - 781
JO - Developmental Cell
JF - Developmental Cell
IS - 6
ER -