scholarly journals NADP-Dependent Malic Enzyme 1 Participates in the Abscisic Acid Response in Arabidopsis thaliana

2018 ◽  
Vol 9 ◽  
Author(s):  
Cintia L. Arias ◽  
Tatiana Pavlovic ◽  
Giuliana Torcolese ◽  
Mariana B. Badia ◽  
Mauro Gismondi ◽  
...  
Keyword(s):  
Arabidopsis Thaliana ◽  
Abscisic Acid ◽  
Malic Enzyme

scholarly journals NADP-dependent malic enzyme 1 participates in the abscisic acid response in Arabidopsis thaliana

2018 ◽  
Author(s):  
Cintia L. Arias ◽  
Tatiana Pavlovic ◽  
Giuliana Torcolese ◽  
Mariana B. Badia ◽  
Mauro Gismondi ◽  
...  
Keyword(s):  
Arabidopsis Thaliana ◽  
Abscisic Acid ◽  
Seed Development ◽  
Malic Enzyme ◽  
Lateral Root ◽  
Seed Viability ◽  
Constitutive Expression ◽  
Wild Type ◽  
Phenotypic Analysis ◽  
Mature Seeds

AbstractArabidopsis thaliana possesses three cytosolic (NADP-ME1-3) and one plastidic (NADP-ME4) NADP-dependent malic enzymes. NADP-ME2 and-ME4 show constitutive expression, in contrast to NADP-ME1 and-ME3, which are restricted to particular tissues. Here, we show that NADP-ME1 transcript and protein were almost undetectable during normal vegetative growth, but gradually increased and reached levels higher than those of the other isoforms in the latest stages of seed development. Accordingly, in knockout nadp-me1 mature seeds the total NADP-ME activity was significantly lower than in wild type mature seeds. The phenotypic analysis of nadp-me1 plants indicated alterations of seed viability and germination. Besides, the treatment with abscisic acid (ABA), NaCl and mannitol specifically induced the accumulation of NADP-ME1 in seedlings. In line with this, nadp-me1 plants show a weaker response of primary and lateral root length and stomatal opening to the presence of ABA.The results suggest that NADP-ME1 plays a specialized role, linked to ABA signalling during the seed development as well as in the response to saline and osmotic stress.

Arabidopsis thaliana lipid phosphate phosphatase 2 is involved in abscisic acid signalling in leaves

2011 ◽  
Vol 49 (3) ◽  
pp. 357-362 ◽  
Author(s):  
Sophie Paradis ◽  
Ana Laura Villasuso ◽  
Susana Saez Aguayo ◽  
Régis Maldiney ◽  
Yvette Habricot ◽  
...  
Keyword(s):  
Arabidopsis Thaliana ◽  
Abscisic Acid ◽  
Lipid Phosphate

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.

Bacterial Quorum-Sensing Signaling-Related drr1 Mutant Influences Abscisic Acid Responsiveness in Arabidopsis thaliana L.

2021 ◽  
Author(s):  
Salvador Barrera-Ortiz ◽  
Claudia Marina López-García ◽  
Randy Ortiz-Castro ◽  
Ángel Arturo Guevara-García ◽  
José López-Bucio
Keyword(s):  
Arabidopsis Thaliana ◽  
Abscisic Acid ◽  
Quorum Sensing ◽  
Bacterial Quorum Sensing ◽  
Bacterial Quorum

Evidence of a role for tyrosine dephosphorylation in the control of postgermination arrest of development by abscisic acid in Arabidopsis thaliana L

Planta ◽  
2005 ◽  
Vol 223 (2) ◽  
pp. 381-385 ◽  
Author(s):  
David Reyes ◽  
Dolores Rodríguez ◽  
Gregorio Nicolás ◽  
Carlos Nicolás
Keyword(s):  
Arabidopsis Thaliana ◽  
Abscisic Acid

scholarly journals Abscisic acid-mediated developmental flexibility of stigmatic papillae in response to ambient humidity in Arabidopsis thaliana

2018 ◽  
Vol 93 (5) ◽  
pp. 209-220 ◽  
Author(s):  
Seiji Takeda ◽  
Kohki Ochiai ◽  
Yasuaki Kagaya ◽  
Wataru Egusa ◽  
Hiroaki Morimoto ◽  
...  
Keyword(s):  
Arabidopsis Thaliana ◽  
Abscisic Acid ◽  
Ambient Humidity ◽  
Stigmatic Papillae
Sign in / Sign up

Export Citation Format

Share Document