ALTERED MERISTEM PROGRAM 1 Plays a Role in Seed Coat Development, Root Growth, and Post-Embryonic Epidermal Cell Elongation in Arabidopsis
Por:
Marina Lopez-Garcia, Claudia, Raya-Gonzalez, Javier, Salvador Lopez-Bucio, Jesus, Arturo Guevara-Garcia, Angel, Lopez-Bucio, Jose
Publicada:
1 dic 2016
Resumen:
Plant development relies on the capacity of cells to interpret
positional information and translate it into proliferation, elongation,
and differentiation programs. ALTERED MERISTEM PROGRAM 1 (AMP1) encodes
a putative glutamate carboxypeptidase involved in embryo development,
plant growth, and phytohormone homeostasis. Here, we show that mutations
of AMP1 cause defective seed coat formation, which correlates with
increased frequency of embryo abortion, low seed production, and
retarded germination. Seed alterations in amp1 mutants were related to
decreased production of trichomes on leaves and increased ratio of short
or bifurcated root hairs in primary roots and primary root growth
inhibition. Expression analyses of hormone-related gene constructs
TCS::GFP, DR5:uidA, and pABI4:uidA indicated that slow root growth is
likely independent of cytokinin and auxin signaling and involves changes
in abscisic acid responsiveness. Our data show that AMP1 is necessary
for normal seed coat and embryo establishment during seed development
and plays an important role in post-embryonic root growth and epidermal
cell elongation.
Filiaciones:
Marina Lopez-Garcia, Claudia:
Univ Michoacana San Nicola Hidalgo, Inst Invest Quim Biol, Edificio B3,Ciudad Univ, Morelia 58030, Michoacan, Mexico
Raya-Gonzalez, Javier:
Univ Michoacana San Nicola Hidalgo, Inst Invest Quim Biol, Edificio B3,Ciudad Univ, Morelia 58030, Michoacan, Mexico
Salvador Lopez-Bucio, Jesus:
UNAM, Inst Biotechnol, Ave Univ 2001, Cuernavaca, Morelos, Mexico
Arturo Guevara-Garcia, Angel:
UNAM, Inst Biotechnol, Ave Univ 2001, Cuernavaca, Morelos, Mexico
Lopez-Bucio, Jose:
Univ Michoacana San Nicola Hidalgo, Inst Invest Quim Biol, Edificio B3,Ciudad Univ, Morelia 58030, Michoacan, Mexico
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