Ethylene promotes seed iron storage during Arabidopsis seed maturation via ERF95 transcription factor

2020 ◽  
Vol 62 (8) ◽  
pp. 1193-1212
Author(s):  
Ying Sun ◽  
Jia Qi Li ◽  
Jing Ying Yan ◽  
Jun Jie Yuan ◽  
Gui Xin Li ◽  
...  
Keyword(s):  
Transcription Factor ◽  
Seed Maturation ◽  
Iron Storage ◽  
Arabidopsis Seed

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 Direct and indirect targets of the arabidopsis seed transcription factor ABSCISIC ACID INSENSITIVE3

2020 ◽  
Vol 103 (5) ◽  
pp. 1679-1694 ◽  
Author(s):  
Ran Tian ◽  
Fangfang Wang ◽  
Qiaolin Zheng ◽  
Venus M. A. G. E. Niza ◽  
A. Bruce Downie ◽  
...  
Keyword(s):  
Transcription Factor ◽  
Abscisic Acid ◽  
Arabidopsis Seed ◽  
Abscisic Acid Insensitive3

scholarly journals Molecular networks regulating Arabidopsis seed maturation, after-ripening, dormancy and germination

2008 ◽  
Vol 179 (1) ◽  
pp. 33-54 ◽  
Author(s):  
Michael J. Holdsworth ◽  
Leónie Bentsink ◽  
Wim J. J. Soppe
Keyword(s):  
Seed Maturation ◽  
Molecular Networks ◽  
Arabidopsis Seed

Late Embryogenesis Abundant (LEA) protein gene regulation during Arabidopsis seed maturation

2001 ◽  
Vol 158 (4) ◽  
pp. 419-427 ◽  
Author(s):  
Michel Delseny ◽  
Natacha Bies-Etheve ◽  
Christel Carles ◽  
Gillian Hull ◽  
Carlos Vicient ◽  
...  
Keyword(s):  
Gene Regulation ◽  
Protein Gene ◽  
Late Embryogenesis Abundant ◽  
Seed Maturation ◽  
Lea Protein ◽  
Arabidopsis Seed ◽  
Late Embryogenesis
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