Sarah M. Assmann, Ph. D, Réka Albert, Ph. D, Sarah M. Assmann
A major aim of systems biology is the study of the inter-relationships found within and between large biological datasets. Here we describe one systems biology method, in which the tools of network...
Gookin, Timothy E, Kim, Junhyong, Assmann, Sarah M
Abstract Background The classic paradigm of heterotrimeric G-protein signaling describes a heptahelical, membrane-spanning G-protein coupled receptor that physically interacts with an intracellular...
Li, Song, Assmann, Sarah M., Albert, Reka
Plants both lose water and take in carbon dioxide through microscopic stomatal pores, each of which is regulated by a surrounding pair of guard cells. During drought, the plant hormone abscisic acid...
Song Li, Sarah M. Assmann, Réka Albert
Plants both lose water and take in carbon dioxide through microscopic stomatal pores, each of which is regulated by a surrounding pair of guard cells. During drought, the plant hormone abscisic acid...
Lee, Caroline Shih-Yi., Assmann, Sarah M.
Thesis supervisor: Sarah M. Assmann.
Ca2+-Permeable, Outwardly-Rectifying K+ Channels in Mesophyll Cells of Arabidopsis taliana (1998)
Romano, Lisa A., Miedema, Hendrik, Assmann, Sarah M.
Arabidopsis thaliana has become a powerful tool in genetics and molecular biology. In order to use Arabidopsis as a model system for electrophysiological studies on plant cells, a detailed...
Rosenberg, Laurie A., Padgett, Pamela E., Assmann, Sarah M., Walling, Linda L., Leonard, Robert T.
Band 3 is a well characterized ion transporter in mammalian cells. To determine if Zea mays expressed Band 3-related polypeptides, polyclonal antibodies to a 13-amino acid sequence at the carboxyl...
The properties of photosynthetic O2 evolution by mesophyll cell chloroplasts (MCC) and guard cell chloroplasts (GCC) isolated from protoplasts of Vicia faba L. have been studied and effects on O2...
Abscisic acid signal transduction in guard cells is mediated by phospholipase D activity
Jacob, Tobias, Ritchie, Sian, Assmann, Sarah M., Gilroy, Simon
In guard cells, the plant hormone abscisic acid (ABA) inhibits stomatal opening and induces stomatal closure through the coordinated regulation of ion transport. Despite this central role of ABA in...
Ozone inhibits guard cell K+ channels implicated in stomatal opening
Torsethaugen, Gro, Pell, Eva J., Assmann, Sarah M.
Ozone (O3) deleteriously affects organisms ranging from humans to crop plants, yet little is understood regarding the underlying mechanisms. In plants, O3 decreases CO2 assimilation, but whether this...
Wang, Xi-Qing, Wu, Wei-Hua, Assmann, Sarah M.
Regulation by abscisic acid (ABA) and Ca2+ of broad bean (Vicia faba) abaxial and adaxial guard cell movements and inward K+ currents were compared. One millimolar Ca2+ in the bathing medium...
Li, Jiaxu, Julie Lee, Yuh-Ru, Assmann, Sarah M.
Increasing evidence suggests that changes in cytosolic Ca2+ levels and phosphorylation play important roles in the regulation of stomatal aperture and as ion transporters of guard cells. However,...
Sutton, Fedora, Paul, Sunil S., Wang, Xi-Qing, Assmann, Sarah M.
Regulation of guard cell ion transport by abscisic acid (ABA) and in particular ABA inhibition of a guard cell inward K+ current (IKin) is well documented. However, little is known concerning ABA...
Taylor, Alison R., Assmann, Sarah M.
In guard cells, membrane hyperpolarization in response to a blue light (BL) stimulus is achieved by the activation of a plasma membrane H+-ATPase. Using the patch clamp technique on broad bean (Vicia...
Abscisic Acid Induces Rapid Subnuclear Reorganization in Guard Cells1[w]
Ng, Carl K.-Y., Kinoshita, Toshinori, Pandey, Sona, Shimazaki, Ken-ichiro, Assmann, Sarah M.
Pandey, Sona, Assmann, Sarah M.
Heterotrimeric G proteins composed of α, β, and γ subunits link ligand perception by G protein–coupled receptors (GPCRs) with downstream effectors, providing a ubiquitous signaling mechanism in...
Chen, Jin-Gui, Pandey, Sona, Huang, Jirong, Alonso, José M., Ecker, Joseph R., Assmann, Sarah M., ...
Signal recognition by seven-transmembrane (7TM) cell-surface receptors is typically coupled by heterotrimeric G-proteins to downstream effectors in metazoan, fungal, and amoeboid cells. Some...
The effects of environmental parameters on the blue light response of stomata were studied by quantifying transient increases in stomatal conductance in Commelina communis following 15 seconds by...
The Magnitude of the Stomatal Response to Blue Light 1: Modulation by Atmospheric Humidity
Assmann, Sarah M., Grantz, David A.
The effect of leaf-air vapor pressure difference (VPD) on the magnitude of the stomatal response to blue light was investigated in soybean (Glycine max) by administering blue light pulses (22 seconds...
Zeiger, Eduardo, Grivet, C., Assmann, Sarah M., Deitzer, Gerald F., Hannegan, M. W.
Leaves from Paphiopedilum sp. (Orchidaceae) having achlorophyllous stomata, show reduced levels of stomatal conductance when irradiated with red light, as compared with either the related,...
Stomatal Responses to CO2 in Paphiopedilum and Phragmipedium1: Role of the Guard Cell Chloroplast
Assmann, Sarah M., Zeiger, Eduardo
A role of the guard cell chloroplasts in the CO2 response of stomata was investigated through a comparison of the leaf gas exchange characteristics of two closely related orchids: Paphiopedilum...
Coursol, Sylvie, Le Stunff, Hervé, Lynch, Daniel V., Gilroy, Simon, Assmann, Sarah M., Spiegel, Sarah
Sphingolipids are a major component of membrane lipids and their metabolite sphingosine-1-phosphate (S1P) is a potent lipid mediator in animal cells. Recently, we have shown that the enzyme...
Cellular Distribution of Calmodulin and Calmodulin-Binding Proteins in Vicia faba L. 1
Ling, Vincent, Assmann, Sarah M.
The distribution of calmodulin (CaM) and CaM-binding proteins within Vicia faba was investigated. Both CaM and CaM-binding proteins were found to be differentially distributed among organs, tissues,...
Karlsson, Per Erik, Assmann, Sarah M.
Low intensity (0.015 millimole per square meter per second) blue light applied to leaves of Hedera helix under a high intensity red light background (0.50 millimole per square meter per second red...
Assmann, Sarah M., Schwartz, Amnon
Upon incubation of epidermal peels of Commelina communis in 1 millimolar KCl, a synergistic effect of light and low fusicoccin (FC) concentrations on stomatal opening is observed. In 1 millimolar...
Plants: the latest model system for G-protein research
Jones, Alan M., Assmann, Sarah M.
In humans, heterotrimeric G proteins couple stimulus perception by G-protein-coupled receptors (GPCRs) with numerous downstream effectors. By contrast, despite great complexity in their...
Li, Song, Assmann, Sarah M, Albert, Réka
Plants both lose water and take in carbon dioxide through microscopic stomatal pores, each of which is regulated by a surrounding pair of guard cells. During drought, the plant hormone abscisic acid...
Abscisic acid signal transduction in guard cells is mediated by phospholipase D activity
Jacob, Tobias, Ritchie, Sian, Assmann, Sarah M., Gilroy, Simon
In guard cells, the plant hormone abscisic acid (ABA) inhibits stomatal opening and induces stomatal closure through the coordinated regulation of ion transport. Despite this central role of ABA in...
Ozone inhibits guard cell K+ channels implicated in stomatal opening
Torsethaugen, Gro, Pell, Eva J., Assmann, Sarah M.
Ozone (O3) deleteriously affects organisms ranging from humans to crop plants, yet little is understood regarding the underlying mechanisms. In plants, O3 decreases CO2 assimilation, but whether this...
Wang, Xi-Qing, Wu, Wei-Hua, Assmann, Sarah M.
Regulation by abscisic acid (ABA) and Ca2+ of broad bean (Vicia faba) abaxial and adaxial guard cell movements and inward K+ currents were compared. One millimolar Ca2+ in the bathing medium...
Li, Jiaxu, Julie Lee, Yuh-Ru, Assmann, Sarah M.
Increasing evidence suggests that changes in cytosolic Ca2+ levels and phosphorylation play important roles in the regulation of stomatal aperture and as ion transporters of guard cells. However,...
Sutton, Fedora, Paul, Sunil S., Wang, Xi-Qing, Assmann, Sarah M.
Regulation of guard cell ion transport by abscisic acid (ABA) and in particular ABA inhibition of a guard cell inward K+ current (IKin) is well documented. However, little is known concerning ABA...
Taylor, Alison R., Assmann, Sarah M.
In guard cells, membrane hyperpolarization in response to a blue light (BL) stimulus is achieved by the activation of a plasma membrane H+-ATPase. Using the patch clamp technique on broad bean (Vicia...
Abscisic Acid Induces Rapid Subnuclear Reorganization in Guard Cells1[w]
Ng, Carl K.-Y., Kinoshita, Toshinori, Pandey, Sona, Shimazaki, Ken-ichiro, Assmann, Sarah M.
Pandey, Sona, Assmann, Sarah M.
Heterotrimeric G proteins composed of α, β, and γ subunits link ligand perception by G protein–coupled receptors (GPCRs) with downstream effectors, providing a ubiquitous signaling mechanism in...
Chen, Jin-Gui, Pandey, Sona, Huang, Jirong, Alonso, José M., Ecker, Joseph R., Assmann, Sarah M., ...
Signal recognition by seven-transmembrane (7TM) cell-surface receptors is typically coupled by heterotrimeric G-proteins to downstream effectors in metazoan, fungal, and amoeboid cells. Some...
The effects of environmental parameters on the blue light response of stomata were studied by quantifying transient increases in stomatal conductance in Commelina communis following 15 seconds by...
The Magnitude of the Stomatal Response to Blue Light 1: Modulation by Atmospheric Humidity
Assmann, Sarah M., Grantz, David A.
The effect of leaf-air vapor pressure difference (VPD) on the magnitude of the stomatal response to blue light was investigated in soybean (Glycine max) by administering blue light pulses (22 seconds...
Zeiger, Eduardo, Grivet, C., Assmann, Sarah M., Deitzer, Gerald F., Hannegan, M. W.
Leaves from Paphiopedilum sp. (Orchidaceae) having achlorophyllous stomata, show reduced levels of stomatal conductance when irradiated with red light, as compared with either the related,...
Stomatal Responses to CO2 in Paphiopedilum and Phragmipedium1: Role of the Guard Cell Chloroplast
Assmann, Sarah M., Zeiger, Eduardo
A role of the guard cell chloroplasts in the CO2 response of stomata was investigated through a comparison of the leaf gas exchange characteristics of two closely related orchids: Paphiopedilum...
Coursol, Sylvie, Le Stunff, Hervé, Lynch, Daniel V., Gilroy, Simon, Assmann, Sarah M., Spiegel, Sarah
Sphingolipids are a major component of membrane lipids and their metabolite sphingosine-1-phosphate (S1P) is a potent lipid mediator in animal cells. Recently, we have shown that the enzyme...
Cellular Distribution of Calmodulin and Calmodulin-Binding Proteins in Vicia faba L. 1
Ling, Vincent, Assmann, Sarah M.
The distribution of calmodulin (CaM) and CaM-binding proteins within Vicia faba was investigated. Both CaM and CaM-binding proteins were found to be differentially distributed among organs, tissues,...
Karlsson, Per Erik, Assmann, Sarah M.
Low intensity (0.015 millimole per square meter per second) blue light applied to leaves of Hedera helix under a high intensity red light background (0.50 millimole per square meter per second red...
Assmann, Sarah M., Schwartz, Amnon
Upon incubation of epidermal peels of Commelina communis in 1 millimolar KCl, a synergistic effect of light and low fusicoccin (FC) concentrations on stomatal opening is observed. In 1 millimolar...
Plants: the latest model system for G-protein research
Jones, Alan M., Assmann, Sarah M.
In humans, heterotrimeric G proteins couple stimulus perception by G-protein-coupled receptors (GPCRs) with numerous downstream effectors. By contrast, despite great complexity in their...
Li, Song, Assmann, Sarah M, Albert, Réka
Plants both lose water and take in carbon dioxide through microscopic stomatal pores, each of which is regulated by a surrounding pair of guard cells. During drought, the plant hormone abscisic acid...
Pandey, Sona, Chen, Jin-Gui, Jones, Alan M., Assmann, Sarah M.
Abscisic acid (ABA) plays regulatory roles in a host of physiological processes throughout plant growth and development. Seed germination, early seedling development, stomatal guard cell functions,...
Gookin, Timothy E, Kim, Junhyong, Assmann, Sarah M
Computational prediction and in vivo protein coupling experiments identify candidate plant G-protein coupled receptors in Arabidopsis, rice and poplar.
Fan, Liu-Min, Zhang, Wei, Chen, Jin-Gui, Taylor, J. Philip, Jones, Alan M., Assmann, Sarah M.
In mammals, basal currents through G protein-coupled inwardly rectifying K+ (GIRK) channels are repressed by Gαi/oGDP, and the channels are activated by direct binding of free Gβγ subunits...
Trusov, Yuri, Zhang, Wei, Assmann, Sarah M., Botella, José Ramón
Heterotrimeric G proteins are signaling molecules ubiquitous among all eukaryotes. The Arabidopsis (Arabidopsis thaliana) genome contains one Gα (GPA1), one Gβ (AGB1), and two Gγ subunit (AGG1 and...
Zhao, Zhixin, Zhang, Wei, Stanley, Bruce A., Assmann, Sarah M.
We isolated a total of 3 × 108 guard cell protoplasts from 22,000 Arabidopsis thaliana plants and identified 1734 unique proteins using three complementary proteomic methods: protein spot...