Biology Reference
In-Depth Information
Transcriptional Regulation of the Lignin Biosynthetic
Pathway Revisited: New Players and Insights
JACQUELINE GRIMA-PETTENATI,
*,1
MAR ¸ AL SOLER,
*
EDUARDO LEAL O. CAMARGO
*,
{
AND HUA WANG
*
*Laboratoire de Recherche en Sciences V´g´tales, UMR 5546 : CNRS -
Universit´ de Toulouse III (UPS), BP 42617 Auzeville, 31326
Castanet-Tolosan, France
{
Laborat
´
rio de Gen
ˆ
mica e Express˜o, Instituto de Biologia,
Universidade Estadual de Campinas (UNICAMP),
Campinas, S
˜
o Paulo, Brazil
I. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
174
II. Phenylpropanoid and Lignin Biosynthetic Genes Contain AC-Rich
Cis-Regulatory Elements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
175
III. MYB TF
S
and the Regulation of the Lignin Pathway. . . . . . . . . . . . . . . . . . . .
177
A. MYB Proteins Repressing the Phenylpropanoid and
Lignin Pathway . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 178
B. MYB Transcriptional Activators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 182
IV. The NAC-Mediated Regulation of the SW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 187
A. NAC
S
Regulating SWs in Fibres. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 187
B. NAC
S
Regulating SWs in Xylem Vessels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 188
C. Poplar NAC
S
................................................................. 189
D. Upstream Regulators and Downstream Target Genes . . . . . . . . . . . . . . . . . 189
E. Complex Feedback Regulation of SW NACs. . . . . . . . . . . . . . . . . . . . . . . . . . . . 190
F. Other NAC Domain Proteins Involved
in Secondary Wall Formation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 191
V. Other TF Families Regulating Lignin Biosynthesis. . . . . . . . . . . . . . . . . . . . . . .
192
1
Corresponding author: E-mail: grima@lrsv.ups-tlse.fr
