Jin X Wang RS Zhu M Jeon BW Albert R Chen S et al (2013) Abscisic acid-responsive guard cell metabolomes of Arabidopsis wild-type and gpa1 G-protein mutants Plant Cell 25:4789–4811 PubMedCentral CrossRef PubMed Google Scholar ![Figure][1] Abscisic acid (ABA) is the major hormone that controls plant's ability to survive in a harsh changing environment The ABA signaling pathway is conserved across all plants including mosses and is considered a very early adaptation to the terrestrial environment ABA participates in the control of root growth seed desiccation and dormancy guard cell responses and cellular

Plant Systems Biology at the Single

Abscisic acid-responsive guard cell metabolomes of arabidopsis wild-type and gpa1 G-protein mutants Plant Cell 2013 25: Guard cells modulate stomatal aperture in response to environmental stimuli to control plant transpiration gas exchange Analysis of abscisic acid responsive proteins in Brassica napus guard cells by multiplexed

Sep 15 2006By a differential cDNA screening technique we have isolated a dehydration-inducible gene (designated OSRK1) that encodes a 41 8 kD protein kinase of SnRK2 family from Oryza sativa The OSRK1 transcript level was undetectable in vegetative tissues but significantly increased by hyperosmotic stress and Abscisic acid (ABA) To determine its biochemical properties we expressed

Abscisic acid (ABA) participates in the control of diverse physiological processes The characterization of deficient mutants has clarified the ABA biosynthetic pathway in higher plants Deficient mutants also lead to a revaluation of the extent of ABA action during seed development and in the response of vegetative tissues to environmental stress

Abscisic Acid–Responsive Guard Cell Metabolomes of Arabidopsis Wild-Type and gpa1 G-Protein Mutants C W 4789 Xiaofen Jin Rui-Sheng Wang Mengmeng Zhu Byeong Wook Jeon Reka Albert Sixue Chen and Sarah M Assmann CAROTENOID CLEAVAGE DIOXYGENASE4 Is a Negative Regulator of b-Carotene Content in Arabidopsis Seeds W 4812

Metabolomes in Arabidopsis and the legume Vicia faba guard cell and Bradyrhizobium japonicum infected soybean root hair in separate investigations include ROS nitric oxide flavonoids trehalose carboxylic acids abscisic acid and auxin as important components of the signaling cascade controlling the stomatal movements in response to osmotic

Mechanisms of abscisic acid

Dec 01 2015ABA biosynthesis degradation and transport in guard cells A recent study showed that guard cells are capable of autonomously synthesizing ABA [5 ••] providing evidence for classical observations [] The wilting phenotype of the Arabidopsis aba3-1 mutant that lacks the final step of ABA biosynthesis (the conversion of ABA-aldehyde to ABA) [] was complemented by guard cell

Cross-talk in hormone signaling reflects an organism's ability to integrate different inputs and respond appropriately a crucial function at the heart of signaling network operation Abscisic acid (ABA) is a plant hormone involved in bud and seed dormancy growth regulation leaf senescence and abscission stomatal opening and a variety of plant stress responses

Abscisic acid-responsive guard cell metabolomes of Arabidopsis wild-type and gpa1 G-protein mutants Plant Cell 25 : 4789-4811 Crossref Medline Google Scholar Knight VI Wang H Lincoln JE Lulai EC Gilchrist DG Bostock RM

Mar 20 2016For instance Sarah Assmann's group performed a transcriptomic analysis of A thaliana guard cells in response to abscisic acid a plant hormone acting on plant water conservation 909 genes were specifically regulated in response to ABA in guard cells Plant resistance to heavy metal has also been investigated at the level of single plant

(A) Light-induced swelling of guard cell protoplasts is greater in wild-type than in bzu1-1 Images (top) and the diameters (bottom) of guard cell protoplasts before and after stimulation with light for 15 min were compared for wild-type (WT) and the buz1-1 mutant Scale bar 2 μm Data are means SEM of three independent experiments

Guard cells which form stomata on the leaf epidermis play important roles in plant gas exchange and defense against pathogens Abscisic acid (ABA) is a phytohormone that can be induced by drought and leads to stomatal closure Guard cells have been a premier model system for studying ABA signal transduction Despite significant progress on the identification of molecular components in the ABA

Abscisic acid (ABA) is one of the "classical" plant hormones i e discovered at least 50 years ago that regulates many aspects of plant growth and development This chapter reviews our current understanding of ABA synthesis metabolism transport and signal transduction emphasizing knowledge gained from studies of Arabidopsis A combination of genetic molecular and biochemical studies

Nov 29 2011Guard cells of the slac1 mutant are insensitive to several environmental stimuli including changes in CO 2 concentration (4 80) and guard cell–derived protoplasts of slac1 plants do not produce anion currents when exposed to high concentrations of CO 2 and carbonic acid (CO 2 /HCO 3 – a mixture of CO 2 and carbonic acid was used in

Metabolite Transporter Regulation of

Pairs of guard cells form stomatal pores through which gas exchange occurs Gas exchange includes transpirational water loss and guard cell signaling in drought response has been studied for decades Abscisic acid (ABA) is the major hormone that regulates drought responses ABA and other metabolites can be synthesized in one cell type or subcellular compartment and transported across

Guard cell-specific expression of either carbonic anhydrase restores the CO 2 responsiveness indicating that carbonic anhydrases can mediate the CO 2 response directly in guard cells Interestingly ca1ca4ht1–2 triple mutant plants exhibit the same constitutive high-[CO 2 ] response as ht1–2 demonstrating that HT1 is epistatic to βCA1

Jin X Wang RS Zhu M Jeon BW Albert R Chen S et al (2013) Abscisic acid-responsive guard cell metabolomes of Arabidopsis wild-type and gpa1 G-protein mutants Plant Cell 25:4789–4811 PubMedCentral CrossRef PubMed Google Scholar

Sep 15 2006By a differential cDNA screening technique we have isolated a dehydration-inducible gene (designated OSRK1) that encodes a 41 8 kD protein kinase of SnRK2 family from Oryza sativa The OSRK1 transcript level was undetectable in vegetative tissues but significantly increased by hyperosmotic stress and Abscisic acid (ABA) To determine its biochemical properties we expressed

During the past decade much progress has been made toward understanding the mechanisms underlying plant hormone activity from perception to nuclear events However the signaling mechanisms for abscisic acid (ABA) have remained largely obscure Recent breakthroughs identifying FCA which is an RNA-binding protein the Mg-chelatase H subunit and a G protein-coupled receptor as receptors

Whereas in wild-type guard cells ABA induces a burst of H 2 O 2 and NO in the rbohD/F double mutant affected in NADPH oxidases D and F H 2 O 2 and NO production as well as ABA-induced stomatal closure were impaired (Bright et al 2006) This points to an ABA-dependent and rbohD/ rbohF-mediated production of NO in guard cells

INTRODUCTION Guard cells are highly specialized epidermal cells that border tiny pores called stomata Guard cells rapidly change volume and shape enabling stomatal pores to open or close in response to environmental signals and thus regulating CO 2 uptake and water loss Stomatal function is essential for plant growth yield and interaction with the environment

Oct 01 2003C Garcia-Mata L LamattinaNitric oxide and abscisic acid cross talk in guard cells Plant Physiol 128 (2002) pp 790-792 M K Walker-SimmonsThe abscisic acid-responsive kinase PKABA1 interacts with a seed-specific abscisic acid response element-binding factor TaABF and phosphorylates TaABF peptide sequences Plant Physiol 130 (2002) pp