scholarly journals PETAL LOSS, a trihelix transcription factor that represses growth in Arabidopsis thaliana, binds the energy-sensing SnRK1 kinase AKIN10

2015 ◽  
Vol 66 (9) ◽  
pp. 2475-2485 ◽  
Author(s):  
Martin O’Brien ◽  
Ruth N. Kaplan-Levy ◽  
Tezz Quon ◽  
Pia G. Sappl ◽  
David R. Smyth
Keyword(s):  
Arabidopsis Thaliana ◽  
Transcription Factor ◽  
Energy Sensing ◽  
Trihelix Transcription Factor

scholarly journals Brassinosteroids repress the seed maturation program during the seed-to-seedling transition

2021 ◽  
Author(s):  
Jiuxiao Ruan ◽  
Huhui Chen ◽  
Tao Zhu ◽  
Yaoguang Yu ◽  
Yawen Lei ◽  
...  
Keyword(s):  
Arabidopsis Thaliana ◽  
Transcription Factor ◽  
Abscisic Acid ◽  
Plant Hormone ◽  
Flowering Plants ◽  
Seed Maturation ◽  
Domain Protein ◽  
Abscisic Acid Insensitive3 ◽  
Underlying Mechanisms ◽  
Embryonic Structure

Abstract In flowering plants, repression of the seed maturation program is essential for the transition from the seed to the vegetative phase, but the underlying mechanisms remain poorly understood. The B3-domain protein VIVIPAROUS1/ABSCISIC ACID-INSENSITIVE3-LIKE 1 (VAL1) is involved in repressing the seed maturation program. Here we uncovered a molecular network triggered by the plant hormone brassinosteroid (BR) that inhibits the seed maturation program during the seed-to-seedling transition in Arabidopsis (Arabidopsis thaliana). val1-2 mutant seedlings treated with a BR biosynthesis inhibitor form embryonic structures, whereas BR signaling gain-of-function mutations rescue the embryonic structure trait. Furthermore, the BR-activated transcription factors BRI1-EMS-SUPPRESSOR 1 and BRASSINAZOLE-RESISTANT 1 bind directly to the promoter of AGAMOUS-LIKE15 (AGL15), which encodes a transcription factor involved in activating the seed maturation program, and suppress its expression. Genetic analysis indicated that BR signaling is epistatic to AGL15 and represses the seed maturation program by downregulating AGL15. Finally, we showed that the BR-mediated pathway functions synergistically with the VAL1/2-mediated pathway to ensure the full repression of the seed maturation program. Together, our work uncovered a mechanism underlying the suppression of the seed maturation program, shedding light on how BR promotes seedling growth.

scholarly journals Rational design of a stapled JAZ9 peptide inhibiting protein–protein interaction of a plant transcription factor

2021 ◽  
Author(s):  
Kaho Suzuki ◽  
Yousuke Takaoka ◽  
Minoru Ueda
Keyword(s):  
Arabidopsis Thaliana ◽  
Transcription Factor ◽  
Protein Interaction ◽  
Rational Design ◽  
Master Regulators ◽  
Jasmonate Signaling ◽  
Protein Protein Interaction ◽  
Inhibiting Protein

A rationally designed stapled JAZ peptide selectively inhibited MYCs, master-regulators of the jasmonate signaling in Arabidopsis thaliana. It is proposed as a novel chemical tool for the analysis of MYC related jasmonate signaling.

scholarly journals The Trihelix Transcription Factor GTL1 Regulates Ploidy-Dependent Cell Growth in the Arabidopsis Trichome

2009 ◽  
Vol 21 (8) ◽  
pp. 2307-2322 ◽  
Author(s):  
Christian Breuer ◽  
Ayako Kawamura ◽  
Takanari Ichikawa ◽  
Rumi Tominaga-Wada ◽  
Takuji Wada ◽  
...  
Keyword(s):  
Transcription Factor ◽  
Cell Growth ◽  
Dependent Cell ◽  
Trihelix Transcription Factor

The intron of the Arabidopsis thaliana COX5c gene is able to improve the drought tolerance conferred by the sunflower Hahb-4 transcription factor

Planta ◽  
2007 ◽  
Vol 226 (5) ◽  
pp. 1143-1154 ◽  
Author(s):  
Julieta V. Cabello ◽  
Carlos A. Dezar ◽  
Pablo A. Manavella ◽  
Raquel L. Chan
Keyword(s):  
Arabidopsis Thaliana ◽  
Transcription Factor ◽  
Drought Tolerance
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