scholarly journals Large Expression Differences in Genes for Iron and Zinc Homeostasis, Stress Response, and Lignin Biosynthesis Distinguish Roots of Arabidopsis thaliana and the Related Metal Hyperaccumulator Thlaspi caerulescens

2006 ◽  
Vol 142 (3) ◽  
pp. 1127-1147 ◽  
Author(s):  
Judith E. van de Mortel ◽  
Laia Almar Villanueva ◽  
Henk Schat ◽  
Jeroen Kwekkeboom ◽  
Sean Coughlan ◽  
...  
Keyword(s):  
Arabidopsis Thaliana ◽  
Stress Response ◽  
Lignin Biosynthesis ◽  
Thlaspi Caerulescens ◽  
Zinc Homeostasis ◽  
Iron And Zinc

Effects of Polychlorinated Biphenyls on Lignin Biosynthesis in Arabidopsis thaliana

2021 ◽  
Author(s):  
Fanella Zamcho ◽  
Aaron Newborn ◽  
Ayesha Karamat ◽  
Rouzbeh Tehrani ◽  
Nancy Pleshko ◽  
...  
Keyword(s):  
Arabidopsis Thaliana ◽  
Polychlorinated Biphenyls ◽  
Lignin Biosynthesis

Bioinformatic and functional characterization of the basic peroxidase 72 from Arabidopsis thaliana involved in lignin biosynthesis

Planta ◽  
2013 ◽  
Vol 237 (6) ◽  
pp. 1599-1612 ◽  
Author(s):  
Joaquín Herrero ◽  
Francisco Fernández-Pérez ◽  
Tatiana Yebra ◽  
Esther Novo-Uzal ◽  
Federico Pomar ◽  
...  
Keyword(s):  
Arabidopsis Thaliana ◽  
Functional Characterization ◽  
Lignin Biosynthesis

scholarly journals Alternative Oxidase Involvement in Cold Stress Response of Arabidopsis thaliana fad2 and FAD3+ Cell Suspensions Altered in Membrane Lipid Composition

2007 ◽  
Vol 48 (6) ◽  
pp. 856-865 ◽  
Author(s):  
Ana Rita Matos ◽  
Cécile Hourton-Cabassa ◽  
Dominique Ciçek ◽  
Nathalie Rezé ◽  
Joao Daniel Arrabaça ◽  
...  
Keyword(s):  
Arabidopsis Thaliana ◽  
Stress Response ◽  
Cold Stress ◽  
Lipid Composition ◽  
Alternative Oxidase ◽  
Membrane Lipid ◽  
Cell Suspensions ◽  
Membrane Lipid Composition

scholarly journals Cloning and Functional Identification of Phosphoethanolamine Methyltransferase in Soybean (Glycine max)

2021 ◽  
Vol 12 ◽  
Author(s):  
Xiaomin Ji ◽  
Xiaoyue Wu ◽  
Wei Chen ◽  
Qianhui Yuan ◽  
Yixin Shen ◽  
...  
Keyword(s):  
Arabidopsis Thaliana ◽  
Glycine Max ◽  
Stress Response ◽  
Cell Metabolism ◽  
Plant Stress ◽  
Lipid Synthesis ◽  
Normal Growth ◽  
Functional Identification ◽  
Short Root ◽  
Response Elements

Phosphoethanolamine methyltransferase (PEAMT), a kind of S-adenosylmethionine-dependent methyltransferases, plays an essential role in many biological processes of plants, such as cell metabolism, stress response, and signal transduction. It is the key rate-limiting enzyme that catalyzes the three-step methylation of ethanolamine-phosphate (P-EA) to phosphocholine (P-Cho). To understand the unique function of PEAMT in soybean (Glycine max) lipid synthesis, we cloned two phosphoethanolamine methyltransferase genes GmPEAMT1 and GmPEAMT2, and performed functional identification. Both GmPEAMT1 and GmPEAMT2 contain two methyltransferase domains. GmPEAMT1 has the closest relationship with MtPEAMT2, and GmPEAMT2 has the closest relationship with CcPEAMT. GmPEAMT1 and GmPEAMT2 are located in the nucleus and endoplasmic reticulum. There are many light response elements and plant hormone response elements in the promoters of GmPEAMT1 and GmPEAMT2, indicating that they may be involved in plant stress response. The yeast cho2 opi3 mutant, co-expressing Arabidopsis thaliana phospholipid methyltransferase (PLMT) and GmPEAMT1 or GmPEAMT2, can restore normal growth, indicating that GmPEAMTs can catalyze the methylation of phosphoethanolamine to phosphate monomethylethanolamine. The heterologous expression of GmPEAMT1 and GmPEAMT2 can partially restore the short root phenotype of the Arabidopsis thaliana peamt1 mutant, suggesting GmPEAMTs have similar but different functions to AtPEAMT1.

Redundant roles of four ZIP family members in zinc homeostasis and seed development in Arabidopsis thaliana

2021 ◽  
Author(s):  
Sichul Lee ◽  
Joohyun Lee ◽  
Felipe K. Ricachenevsky ◽  
Tracy Punshon ◽  
Ryan Tappero ◽  
...  
Keyword(s):  
Arabidopsis Thaliana ◽  
Seed Development ◽  
Family Members ◽  
Zinc Homeostasis ◽  
Zip Family

Identification of IAA-regulated genes in Pseudomonas syringae pv. tomato strain DC3000

2021 ◽  
Author(s):  
Arnaud-Thierry Djami-Tchatchou ◽  
Zipeng Alex Li ◽  
Paul Stodghill ◽  
Melanie J. Filiatrault ◽  
Barbara N. Kunkel
Keyword(s):  
Gene Expression ◽  
Arabidopsis Thaliana ◽  
Acetic Acid ◽  
Stress Response ◽  
Pseudomonas Syringae ◽  
Plant Pathogen ◽  
Type Iii Secretion ◽  
Plant Hormone ◽  
Indole 3 Acetic Acid ◽  
Exogenous Iaa

The auxin indole-3-acetic acid (IAA) is a plant hormone that not only regulates plant growth and development but also plays important roles in plant-microbe interactions. We previously reported that IAA alters expression of several virulence-related genes in the plant pathogen Pseudomonas syringae pv. tomato strain DC3000 ( Pto DC3000). To learn more about the impact of IAA on regulation of Pto DC3000 gene expression we performed a global transcriptomic analysis of bacteria grown in culture, in the presence or absence of exogenous IAA. We observed that IAA repressed expression of genes involved in the Type III secretion (T3S) system and motility and promoted expression of several known and putative transcriptional regulators. Several of these regulators are orthologs of factors known to regulate stress responses and accordingly expression of several stress response-related genes was also upregulated by IAA. Similar trends in expression for several genes were also observed by RT-qPCR. Using an Arabidopsis thaliana auxin receptor mutant that accumulates elevated auxin, we found that many of the P. syringae genes regulated by IAA in vitro were also regulated by auxin in planta . Collectively the data indicate that IAA modulates many aspects of Pto DC3000 biology, presumably to promote both virulence and survival under stressful conditions, including those encountered in or on plant leaves. IMPORTANCE Indole-3-acetic acid (IAA), a form of the plant hormone auxin, is used by many plant-associated bacteria as a cue to sense the plant environment. Previously, we showed that IAA can promote disease in interactions between the plant pathogen Pseudomonas syringae strain Pto DC000 and one of its hosts, Arabidopsis thaliana . However, the mechanisms by which IAA impacts the biology of Pto DC3000 and promotes disease are not well understood. Here we demonstrate that IAA is a signal molecule that regulates gene expression in Pto DC3000. The presence of exogenous IAA affects expression of over 700 genes in the bacteria, including genes involved in Type III secretion and genes involved in stress response. This work offers insight into the roles of auxin promoting pathogenesis.

scholarly journals Iron and Zinc Homeostasis and Interactions: Does Enteric Zinc Excretion Cross-Talk with Intestinal Iron Absorption?

Nutrients ◽  
2019 ◽  
Vol 11 (8) ◽  
pp. 1885 ◽  
Author(s):  
Palsa Kondaiah ◽  
Puneeta Singh Yaduvanshi ◽  
Paul A Sharp ◽  
Raghu Pullakhandam
Keyword(s):  
Iron Absorption ◽  
Iron Status ◽  
The Body ◽  
Zinc Homeostasis ◽  
Iron Accumulation ◽  
Intestinal Cell ◽  
Deficiency Anemia ◽  
Intestinal Iron Absorption ◽  
Tissue Iron ◽  
Iron And Zinc

Iron and zinc are essential micronutrients required for growth and health. Deficiencies of these nutrients are highly prevalent among populations, but can be alleviated by supplementation and food fortification. Cross-sectional studies in humans showed positive association of serum zinc levels with hemoglobin and markers of iron status. Dietary restriction of zinc or intestinal specific conditional knock out of ZIP4 (SLC39A4), an intestinal zinc transporter, in experimental animals demonstrated iron deficiency anemia and tissue iron accumulation. Similarly, increased iron accumulation has been observed in cultured cells exposed to zinc deficient media. These results together suggest a potential role of zinc in modulating intestinal iron absorption and mobilization from tissues. Studies in intestinal cell culture models demonstrate that zinc induces iron uptake and transcellular transport via induction of divalent metal iron transporter-1 (DMT1) and ferroportin (FPN1) expression, respectively. It is interesting to note that intestinal cells are exposed to very high levels of zinc through pancreatic secretions, which is a major route of zinc excretion from the body. Therefore, zinc appears to be modulating the iron metabolism possibly via regulating the DMT1 and FPN1 levels. Herein we critically reviewed the available evidence to hypothesize novel mechanism of Zinc-DMT1/FPN1 axis in regulating intestinal iron absorption and tissue iron accumulation to facilitate future research aimed at understanding the yet elusive mechanisms of iron and zinc interactions.

scholarly journals Dissection of Molecular Processes and Genetic Architecture Underlying Iron and Zinc Homeostasis for Biofortification: From Model Plants to Common Wheat

2020 ◽  
Vol 21 (23) ◽  
pp. 9280
Author(s):  
Jingyang Tong ◽  
Mengjing Sun ◽  
Yue Wang ◽  
Yong Zhang ◽  
Awais Rasheed ◽  
...  
Keyword(s):  
Wheat Genome ◽  
Zinc Homeostasis ◽  
Molecular Processes ◽  
Physiological Mechanisms ◽  
Sequencing Technologies ◽  
Zn Homeostasis ◽  
Iron And Zinc ◽  
Trait Locus ◽  
Edible Parts ◽  
Generation Sequencing

The micronutrients iron (Fe) and zinc (Zn) are not only essential for plant survival and proliferation but are crucial for human health. Increasing Fe and Zn levels in edible parts of plants, known as biofortification, is seen a sustainable approach to alleviate micronutrient deficiency in humans. Wheat, as one of the leading staple foods worldwide, is recognized as a prioritized choice for Fe and Zn biofortification. However, to date, limited molecular and physiological mechanisms have been elucidated for Fe and Zn homeostasis in wheat. The expanding molecular understanding of Fe and Zn homeostasis in model plants is providing invaluable resources to biofortify wheat. Recent advancements in NGS (next generation sequencing) technologies coupled with improved wheat genome assembly and high-throughput genotyping platforms have initiated a revolution in resources and approaches for wheat genetic investigations and breeding. Here, we summarize molecular processes and genes involved in Fe and Zn homeostasis in the model plants Arabidopsis and rice, identify their orthologs in the wheat genome, and relate them to known wheat Fe/Zn QTL (quantitative trait locus/loci) based on physical positions. The current study provides the first inventory of the genes regulating grain Fe and Zn homeostasis in wheat, which will benefit gene discovery and breeding, and thereby accelerate the release of Fe- and Zn-enriched wheats.

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