scholarly journals A genomics approach to the early stages of triterpene saponin biosynthesis in Medicago truncatula

2002 ◽  
Vol 32 (6) ◽  
pp. 1033-1048 ◽  
Author(s):  
Hideyuki Suzuki ◽  
Lahoucine Achnine ◽  
Ran Xu ◽  
Seiichi P. T. Matsuda ◽  
Richard A. Dixon
Keyword(s):  
Medicago Truncatula ◽  
Triterpene Saponin ◽  
Early Stages ◽  
Saponin Biosynthesis

scholarly journals The bHLH Transcription Factors TSAR1 and TSAR2 Regulate Triterpene Saponin Biosynthesis in Medicago truncatula

2015 ◽  
Vol 170 (1) ◽  
pp. 194-210 ◽  
Author(s):  
Jan Mertens ◽  
Jacob Pollier ◽  
Robin Vanden Bossche ◽  
Irene Lopez-Vidriero ◽  
José Manuel Franco-Zorrilla ◽  
...  
Keyword(s):  
Transcription Factors ◽  
Medicago Truncatula ◽  
Triterpene Saponin ◽  
Saponin Biosynthesis ◽  
Bhlh Transcription Factors

scholarly journals Genomic and Coexpression Analyses Predict Multiple Genes Involved in Triterpene Saponin Biosynthesis in Medicago truncatula

2010 ◽  
Vol 22 (3) ◽  
pp. 850-866 ◽  
Author(s):  
Marina A. Naoumkina ◽  
Luzia V. Modolo ◽  
David V. Huhman ◽  
Ewa Urbanczyk-Wochniak ◽  
Yuhong Tang ◽  
...  
Keyword(s):  
Medicago Truncatula ◽  
Triterpene Saponin ◽  
Saponin Biosynthesis ◽  
Multiple Genes

scholarly journals A Seed-Specific Regulator of Triterpene Saponin Biosynthesis in Medicago truncatula

2020 ◽  
Vol 32 (6) ◽  
pp. 2020-2042 ◽  
Author(s):  
Bianca Ribeiro ◽  
Elia Lacchini ◽  
Keylla U. Bicalho ◽  
Jan Mertens ◽  
Philipp Arendt ◽  
...  
Keyword(s):  
Medicago Truncatula ◽  
Triterpene Saponin ◽  
Saponin Biosynthesis

Enhanced triterpene saponin biosynthesis and root nodulation in transgenic barrel medic (Medicago truncatulaGaertn.) expressing a novel β-amyrin synthase (AsOXA1) gene

2009 ◽  
Vol 7 (2) ◽  
pp. 172-182 ◽  
Author(s):  
Massimo Confalonieri ◽  
Maria Cammareri ◽  
Elisa Biazzi ◽  
Paola Pecchia ◽  
Manuel Pedro Salema Fevereiro ◽  
...  
Keyword(s):  
Root Nodulation ◽  
Triterpene Saponin ◽  
Barrel Medic ◽  
Saponin Biosynthesis

Characterization of the Orobanche-Medicago truncatula association for studying early stages of the parasite-host interaction

Weed Research ◽  
2004 ◽  
Vol 44 (3) ◽  
pp. 218-223 ◽  
Author(s):  
M F Rodriguez-Conde ◽  
M T Moreno ◽  
J I Cubero ◽  
D Rubiales
Keyword(s):  
Medicago Truncatula ◽  
Early Stages ◽  
Host Interaction

scholarly journals CYP72A67 Catalyzes a Key Oxidative Step in Medicago truncatula Hemolytic Saponin Biosynthesis

2015 ◽  
Vol 8 (10) ◽  
pp. 1493-1506 ◽  
Author(s):  
Elisa Biazzi ◽  
Maria Carelli ◽  
Aldo Tava ◽  
Pamela Abbruscato ◽  
Ilaria Losini ◽  
...  
Keyword(s):  
Medicago Truncatula ◽  
Saponin Biosynthesis

scholarly journals ER-Anchored Transcription Factors bZIP17 and bZIP60 Regulate Triterpene Saponin Biosynthesis in Medicago truncatula1[OPEN]

2020 ◽  
Author(s):  
Bianca Ribeiro ◽  
Marie-Laure Erffelinck ◽  
Maite Colinas ◽  
Clara Williams ◽  
Evelien Van Hamme ◽  
...  
Keyword(s):  
Transcription Factors ◽  
Er Stress ◽  
Indole Alkaloid ◽  
Stress Conditions ◽  
Basic Leucine Zipper ◽  
Defense Compounds ◽  
Model Legume ◽  
Triterpene Saponin ◽  
Saponin Biosynthesis ◽  
Bhlh Transcription Factors

ABSTRACTTriterpene saponins (TS) are a structurally diverse group of metabolites that are widely distributed in plants. They primarily serve as defense compounds and their production is often triggered by biotic stresses through signaling cascades that are modulated by phytohormones such as the jasmonates (JA). Two JA-modulated basic helix-loop-helix (bHLH) transcription factors (TFs), TRITERPENE SAPONIN BIOSYNTHESIS ACTIVATING REGULATOR 1 (TSAR1) and TSAR2, have been previously identified as direct activators of TS biosynthesis in the model legume Medicago truncatula. Here, we report on the involvement of the core endoplasmic reticulum (ER) stress basic leucine zipper (bZIP) TFs bZIP17 and bZIP60 in the regulation of TS biosynthesis. Expression and processing of M. truncatula bZIP17 and bZIP60 proteins was altered in roots with perturbed TS biosynthesis or treated with JA. Accordingly, such roots displayed an altered ER network structure. M. truncatula bZIP17 and bZIP60 proteins were shown to be capable of interfering with the TSAR-mediated transactivation of TS biosynthesis genes, particularly under ER stress conditions, when they translocate from the ER to the nucleus. Furthermore, the inhibitory role of ER stress bZIP TFs in the regulation of JA-dependent terpene biosynthetic pathways appears to be widespread in the plant kingdom, as we demonstrate that it also occurs in the regulation of monoterpene indole alkaloid biosynthesis in the medicinal plant Catharanthus roseus. We postulate that activation of ER stress bZIP TFs provides the plant with a mechanism to balance metabolic activities and thereby adequately govern modulation of growth, development and defense processes in defined stress situations.One sentence summaryER stress bZIP transcription factors can interfere with the activity of jasmonate-inducible bHLH transcription factors to modulate the elicitation of plant specialized metabolism in stress conditions.

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