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Plasma membrane H ATPases sustain pollen tube growth

Plasma membrane H + -ATPases sustain pollen tube growth ...Pollen tubes are highly polarized tip-growing cells that depend on cytosolic pH gradients for signaling and growth. Autoinhibited plasma membrane proton (H +) ATPases (AHAs) have been proposed to energize pollen tube growth and underlie cell polarity, however, me...

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Translate this pageMay 25, 2020Pollen tubes are highly polarized tip-growing cells that depend on cytosolic pH gradients for signaling and growth. Autoinhibited plasma membrane proton (H +) ATPases (AHAs) have been proposed to energize pollen tube growth and underlie cell polarity, however, mechanistic evidence for this is lacking. Here we report that the combined loss of AHA6, AHA8, and AHA9 in Arabidopsis Osmoregulation in Lilium Pollen Grains Occurs via Plasma membrane H ATPases sustain pollen tube growth To allow successful germination and growth of a pollen tube, mature and dehydrated pollen grains (PGs) take up water and have to adjust their turgor pressure according to the water potential of the surrounding stigma surface. The turgor pressure of PGs of lily (Lilium longiflorum) was measured with a modified pressure probe for simultaneous recordings of turgor pressure and membrane potential Plasma membrane H ATPases sustain pollen tube growth (PDF) Ions and Pollen Tube Growth Rui Malhó and Joseph Plasma membrane H ATPases sustain pollen tube growth Feijó et al. (1992) showed ATPase activity on the plasma membrane of both the grain and pollen tube, whereas Ober- meyer et al. (1992) only demonstrated strong activity in association with the Ions and Pollen Tube Growth 53 Fig. 3 A nonlinear, reactiondiffusion model for pH regulation [adapted from a model rst published by Feijó et al Plasma membrane H ATPases sustain pollen tube growth

(PDF) Membrane trafficking and polar growth in root hairs Plasma membrane H ATPases sustain pollen tube growth

Current models recognize membrane trafcking as growth cones (Gomez and Spitzer, 1999), and lily pollen fundamental to tip growth, notably its role in supplying tubes (Lilium longiflorum L.) can achieve the astonishing lipid and protein to the new plasma membrane and cell growth rate of 250 nm sÿ1 (Pier et al., 1996; Messerli wall that Plasma membrane H ATPases sustain pollen tube growth A Plant Plasma Membrane Ca 2+ Pump Is Required for tube plasma membrane and is a key regulator of pollen tube growth and fertilization. Three independent gene disruptions of ACA9 were shown to result in a semisterile phenotype. This phenotype originates from two defects in the male gametophyte. First, mutant pollen tubes display a reduced growth rate and growth potential (i.e., length). Second Plasma membrane H ATPases sustain pollen tube growth A plant plasma membrane Ca2 pump is required for tube plasma membrane and is a key regulator of pollen tube growth and fertilization. Three independent gene disruptions of ACA9 were shown to result in a semisterile phenotype. This phenotype originates from two defects in the male gametophyte. First, mutant pollen tubes display a reduced growth rate and growth potential (i.e., length). Second, mutant pollen tubes that

A plant plasma membrane Ca2+ pump is required for normal Plasma membrane H ATPases sustain pollen tube growth

Jun 22, 2004Here, we provide evidence that ACA9 functions in the pollen tube plasma membrane and is a key regulator of pollen tube growth and fertilization. Three independent gene disruptions of ACA9 were shown to result in a semisterile phenotype. This phenotype originates from ACA12 Is a Deregulated Isoform of Plasma Membrane Ca2 Plasma membrane H ATPases sustain pollen tube growth Schiøtt M, Romanowsky SM, Baekgaard L, Jakobsen MK, Palmgren MG, Harper JF. A plant plasma membrane Ca 2+ pump is required for normal pollen tube growth and fertilization. Proc Natl Acad Sci USA. 2004; 101 (25):95029507. [PMC free article] Shiu SH, Bleecker AB.ARCA Página principalPlasma membrane H+-ATPases sustain pollen tube growth and fertilization Pollen tubes are highly polarized tip-growing cells that depend on cytosolic pH gradients for signaling and growth. Autoinhibited plasma membrane proton (H+) ATPases (AHAs) have been proposed to energize pollen tube growth and underlie cell polarity, however, mechanistic Plasma membrane H ATPases sustain pollen tube growth

Arabidopsis Phosphatidylinositol-4-Monophosphate 5

However, the growth rate of mutant pollen tubes was much slower than that of wild-type pollen, with pip5k4 pollen tubes requiring about twice the amount time (42 h after pollination) to fully traverse the pistil . These observations are consistent with the observed reduced transmission of Chloride-selective liquid ion-exchanger microelectrode Plasma membrane H ATPases sustain pollen tube growth Pollen tubes are highly polarized tip-growing cells that depend on cytosolic pH gradients for signaling and growth. Autoinhibited plasma membrane proton (H+) ATPases (AHAs) have been proposed to energize pollen tube growth and underlie cell polarity, however, mechanistic evidence for Plasma membrane H ATPases sustain pollen tube growth Cited by 20Publish Year 2020Author Robert D. Hoffmann, Maria Teresa Portes, Lene Irene Olsen, Daniel Santa Cruz Damineli, Daniel Santa Plasma membrane H ATPases sustain pollen tube growth Images of Plasma membrane H Atpases sustain pollen tube g imagesPlasma membrane H + -ATPases-mediated cytosolic proton Plasma membrane H ATPases sustain pollen tube growth An in vitro pharmacological assay previously implicated proton flux in pollen tube growth, although genetic and cellular supporting evidence was lacking. Here, we report that protons form a gradient from the pollen tube tip to the shank region and this gradient is generated by three members of Arabidopsis H +-ATPases (AHAs). Genetic analysis suggested that these AHAs are essential for pollen tube growth, thus providing new insight into the regulation of polar growth.

Cited by 20Publish Year 2020Author Robert D. Hoffmann, Maria Teresa Portes, Lene Irene Olsen, Daniel Santa Cruz Damineli, Daniel Santa Plasma membrane H ATPases sustain pollen tube growth Plasma membrane H + -ATPases sustain pollen tube growth Plasma membrane H ATPases sustain pollen tube growth

The plasma membrane H + -ATPase has been proposed to be the powerhouse driving pollen tube growth 13, 14. Plasma membrane H + -ATPases energize the plasma membrane and drive the uptake of Cited by 4Publish Year 2020Author Wei Chen, PengFei Jia, WeiCai Yang, HongJu LiPlasma membrane H + â ATPasesâ mediated cytosolic Plasma membrane H+ATPasesmediated cytosolic proton gradient regulates pollen tube growthFA Wei Chen1, PengFei Jia1, WeiCai Yang1,2 and HongJu Li1* 1. State Key Laboratory of Molecular Developmental Biology, Institute of Genetics and Developmental Biology, the Chinese Academy of Sciences, Beijing 100101, China 2.Cited by 4Publish Year 2020Author Wei Chen, PengFei Jia, WeiCai Yang, HongJu LiPlasma membrane H + -ATPases sustain pollen tube growth Plasma membrane H ATPases sustain pollen tube growth Plasma membrane H +-ATPases sustain pollen tube growth and fertilization. Publikation Bidrag til tidsskrift Tidsskriftartikel Forskning fagfællebedømt. Præsentation; Citationsformater; Dokumenter. s41467-020-16253-1. Forlagets udgivne version, 5,27 MB, PDF-dokument. Robert D. Hoffmann;

Cited by 4Publish Year 2020Author Wei Chen, PengFei Jia, WeiCai Yang, HongJu LiPlasma membrane H + ATPasesmediated cytosolic proton Plasma membrane H ATPases sustain pollen tube growth

Jun 10, 2020Based on pharmacological assays, it has been hypothesized that pollen tubes, like other plant cells, use H + ATPases to generate proton flux that modulates membrane potential and ion flux across membranes (Feijó et al. 1999; Palmgren 2001; Certal et al. 2008; Lang et al. 2014). These observations imply the existence of a specific pH pattern in polarized pollen tubes.Comparative proteomic analysis reveals a dynamic pollen Plasma membrane H ATPases sustain pollen tube growth Jan 05, 2017The coordination of pollen tube (PT) growth, guidance and timely growth arrest and rupture mediated by PT-pistil interaction is crucial for the PT to transport sperm cells into ovules for double fertilization. The plasma membrane (PM) represents an important interface for cellcell interaction, and PM proteins of PTs are pioneers for mediating PT integrity and interaction with pistils.Exclusion of a proton ATPase from the apical membrane is Plasma membrane H ATPases sustain pollen tube growth Mar 25, 2008Plasma membrane H +-ATPases sustain pollen tube growth and fertilization. Hoffmann RD, Portes MT, Olsen LI, Damineli DSC, Hayashi M, Nunes CO, Pedersen JT, Lima PT, Campos C, Feijó JA, Palmgren M. Nat Commun, 11(1):2395, 14 May 2020

Exploring P-type Pumps and Novel Crops Institut for Plasma membrane H ATPases sustain pollen tube growth

Hoffmann RD, Portes MT, Olsen LI, Damineli DSC, Hayashi M, Nunes CO, Pedersen JT, Lima PT, Campos C, Feijó JA, Palmgren M (2020) Plasma membrane H +-ATPases sustain pollen tube growth and fertilization. Nature Communications 11 2395.Frontiers Mechanics of Pollen Tube Elongation A Plasma membrane H ATPases sustain pollen tube growth Oct 20, 2020Wu, H. M., Wang, H., and Cheung, A. Y. (1995). A pollen tube growth stimulatory glycoprotein is deglycosylated by pollen tubes and displays a glycosylation gradient in the flower. Cell 82, 395403. doi 10.1016/0092-8674(95)90428-X. CrossRef Full Text Google ScholarFrontiers Modulation of Ion Transport Across Plant Plasma membrane H ATPases sustain pollen tube growth Jan 26, 2021Spermidine oxidase-derived H 2 O 2 regulates pollen plasma membrane hyperpolarization-activated Ca 2+-permeable channels and pollen tube growth. Plant J. 63, 10421053. doi 10.1111/j.1365-313X.2010.04301.x

How Does pH Fit in with Oscillating Polar Growth?

growth theory, which considers that auxin triggers apoplastic acidication by activating plasma membrane P-type H+-ATPases (AHAs) along with cell wall relaxation pH over long periods, the apoplastic pH (apopH) regulatory mechanisms are unknown for polar growth. Polar growth is a fast process mediated by rapid oscillations that repeat every 20 Plasma membrane H ATPases sustain pollen tube growth Hydrogen ionophore I - cocktail B SelectophorePollen tubes are highly polarized tip-growing cells that depend on cytosolic pH gradients for signaling and growth. Autoinhibited plasma membrane proton (H+) ATPases (AHAs) have been proposed to energize pollen tube growth and underlie cell polarity, however, mechanistic evidence for Plasma membrane H ATPases sustain pollen tube growth IAA stimulates pollen tube growth and mediates the Plasma membrane H ATPases sustain pollen tube growth Pollen tube growth In a preliminary study it was found that 4 mg l 1 (22.8 lM) IAA, 2mgl 1zeatin (ZT) (9.1 lM), or 4 mg l (11.5 lM) gibberellin (GA 3) could notably stimulate pollen tube growth of T. fournieri in vitro. In this study, the work was continued to investigate the effects of mixed hormones on pollen tube growth. IAA, ZT, and GA 3 were

Identification of a Nicotiana plumbaginifolia Plasma Plasma membrane H ATPases sustain pollen tube growth

Aug 01, 2005In Nicotiana plumbaginifolia, plasma membrane H + -ATPases ( PMAs) are encoded by a gene family of nine members. Here, we report on the characterization of a new isogene, NpPMA5 (belonging to subfamily IV), and the determination of its expression pattern using the -glucuronidase ( gusA) reporter gene. p NpPMA5 gusA was expressed in cotyledons, in vascular tissues of the stem Identification of a Nicotiana plumbaginifolia plasma Plasma membrane H ATPases sustain pollen tube growth Aug 01, 2005The subcellular localization of PM H(+)-ATPase in the pollen tube was analyzed by immunocytodecoration. As expected, this enzyme was localized to the plasma membrane. However, neither the tip nor the base of the pollen tube was labeled, showing In vivo cross-linking combined with mass spectrometry Plasma membrane H ATPases sustain pollen tube growth Aug 28, 2014Thus, it seems very plausible that in the plasma membrane of lily pollen a panel of proteins works together to sense various external or internal stimuli to initiate downstream responses to modulate the activity of the PM H + ATPase for successful pollen grain germination and tube growth during sexual reproduction in plants. Surprisingly, V1 Plasma membrane H ATPases sustain pollen tube growth

In vivo cross-linking combined with mass spectrometry Plasma membrane H ATPases sustain pollen tube growth

For this process, adaption to specific environmental conditions and communication between male and female organs are essential, requiring the sensing of internal and external signals which are translated into tube growth. The plasma membrane (PM) H + ATPase energises the pollen plasma membrane for nutrient, ion and water uptake, but Plasma membrane H ATPases sustain pollen tube growth Membrane trafficking and polar growth in root hairs and Plasma membrane H ATPases sustain pollen tube growth Abstract. Root hairs and pollen tubes extend by rapid elongation that occurs exclusively at the tip. Fundamental for such local, tip-focused growth (so-called tip growth) is the polarization of the cytoplasm that directs secretory events to the tip, and the presence of internal gradients and transmembrane flux of ions, notably Ca 2+, H +, K +, and Cl .Michael Broberg Palmgren - Research outputs - Transport Plasma membrane H ATPases sustain pollen tube growth Department of Plant and Environmental Sciences. Vis søgemuligheder. Department of Plant and Environmental Sciences

Newfound knowledge may prove valuable to understand

Jun 16, 2020Hoffman, R. D., Plasma membrane H +-ATPases sustain pollen tube growth and fertilization. Nature Communications. doi. org/ 10. 1038/ s41467-020-16253-1.Panicle Apical Abortion 3 Controls Panicle Development and Plasma membrane H ATPases sustain pollen tube growth Jul 15, 2021Hoffmann RD, Portes MT, Olsen LI, Damineli DSC, Hayashi M, Nunes CO, Pedersen JT, Lima PT, Campos C, Feijo JA, Palmgren M (2020) Plasma membrane H(+)-ATPases sustain pollen tube growth and fertilization. Nat Commun 11(1):2395. CAS Article Google Scholarplasma membrane in animal cellplasma membrane of a cellplasma membrane parts and functionstypes of plasma membrane proteinsfour functions of plasma membranepicture of a plasma membraneLoss of the Arabidopsis thaliana P4-ATPases ALA6 and 2 35 Abstract 36 Members of the P4 subfamily of P-type ATPases are thought to create and maintain lipid 37 asymmetry in biological membranes by flipping specific lipids between membrane leaflets. In 38 Arabidopsis, 7 of the 12 Aminophospholipid ATPase (ALA) family members are expressed in 39 pollen. Here we show that double knockout of ALA6 and ALA7 (ala6/7) results in siliques with

what is the function ofthe ocary in plantspollination managementwhat is the function of the stamenwhat is anither name for pollen tubeconfectionery meaningwhat is the function ofthe sepalIJMS Free Full-Text Plasma Membrane-Localized Calcium Plasma membrane H ATPases sustain pollen tube growth

Calcium plays an important role in plant growth, development, and response to environmental stimuli. Copines are conserved plasma membrane-localized calcium-binding proteins which regulate plant immune responses and development. In this study, we found that copine proteins BON2 and BON3, the paralogs of BON1, physically interact with calcium pumps ACA8 and ACA10 in Arabidopsis.Periplasmic arabinogalactan glycoproteins act as a calcium Plasma membrane H ATPases sustain pollen tube growth Oct 29, 2012During tip growth, stretch-activated H +-ATPases of the plasma membrane (Pertl et al., 2010) generate pulses of H + (Monshausen et al., 2007). The H + flux measured variably as 0.4490 pmol cm 2 s 1 (Holdaway-Clarke & Hepler, 2003 ) would correspond to a pH of c . 03 in the small periplasmic volume of the growing region.Phytosulfokine Regulates Growth in Arabidopsis through Phytosulfokine Regulates Growth in Arabidopsis through a Response Module at the Plasma Membrane That Includes CYCLIC NUCLEOTIDE-GATED CHANNEL17, H+-ATPase, and BAK1OPEN Friederike Ladwig,a Renate I. Dahlke,b Nils Stührwohldt,b Jens Hartmann,b Klaus Harter,a and Margret Sauterb,1 a Universität Tübingen, ZMBP, Plant Physiology, D-72076 Tübingen, Germany b Entwicklungsbiologie

Plant Pollen Tube Could be Natures Biggest Erection Plasma membrane H ATPases sustain pollen tube growth

Jun 17, 2020The team discovered that when the plants were engineered to lack certain aha genes, pollen tube defects were observed, causing a drastic reduction in fertility.The aha group of genes control the production of the proton pumps that generate the electrical voltage across the cell membrane that is needed for pollen tube elongation. In experiments, we were able to see that the mutant pollen Plasma membrane H ATPases sustain pollen tube growth Plants Free Full-Text Dynamics of Pollen Activation Plasma membrane H ATPases sustain pollen tube growth In pollen tubes of flowering plants, important functions of plasma membrane H + -ATPase include maintaining the pH gradient in the cytoplasm and MP gradient on the plasmalemma as well as osmoregulation [ 26, 29, 30 ].Plasma membrane H + -ATPases sustain pollen tube growth Plasma membrane H ATPases sustain pollen tube growth Pollen tubes are highly polarized tip-growing cells that depend on cytosolic pH gradients for signaling and growth. Autoinhibited plasma membrane proton (H +) ATPases (AHAs) have been proposed to energize pollen tube growth and underlie cell polarity, however, mechanistic evidence for this is lacking. Here we report that the combined loss of AHA6, AHA8, and AHA9 in Arabidopsis thaliana delays pollen germination and causes pollen tube growth

Publication Search Results - Arabidopsis

Keywords apical plasma membrane, membrane, plasma membrane, growth, pollen germination, regulation of growth, pollen tube growth, fertilization, cellular process Plasma membrane H ATPases sustain pollen tube growth Pump up the volume - a central role for the plasma Plasma membrane H ATPases sustain pollen tube growth Oct 05, 2013Additionally, all antagonists of the PM H + ATPase also inhibited pollen germination and tube growth, whereas stimulators of the PM H + ATPase activity were also able to boost the germination frequency as well as the tube growth rates as summarized in Fig. 2 (see also Fricker et al. 1997; Certal et al. 2008). The inhibitors vanadate and erythrosine B can totally block lily pollen germination.Researchers explore pollen fertilization mechanisms Plasma membrane H ATPases sustain pollen tube growth Aug 12, 2020Biologically speaking, how tip growth is orchestrated is poorly understood. Now we can study it further, Damineli said. The article Plasma membrane H +-ATPases sustain pollen tube growth and fertilization can be read at nature/articles/s41467-020-16253-1. Republish

Roles of plasma membrane proton ATPases AHA2 and AHA7

Plasma membrane H+ATPase pumps build up the electrochemical H+ gradients that energize most other transport processes into and out of plant cells through channel proteins and secondary active carriers. In Arabidopsis thaliana, the AUTOINHIBITED PLASMA MEMBRANE H+ATPases AHA1, AHA2 and AHA7 are predominant in root epidermal cells. In contrast to other H+ATPases, we find SPECIAL ISSUE PAPER Membrane trafcking and polar lipid and protein to the new plasma membrane and cell Plasma membrane H ATPases sustain pollen tube growth organization of the cytoplasm is retained and must sustain tip growth during the development of the root hair (Fig. 2B). On maturation, the root hair stops growing and the Plasma membrane H ATPases sustain pollen tube growth concurrently both in root hair and in pollen tube growth, suggests that the two proteins may function within differ-Signaling in Pollen Tube Growth Crosstalk, , and Plasma membrane H ATPases sustain pollen tube growth Pollen germination and pollen tube growth can be replicated in vitro without an external signal, implying that pollen tube growth is a self-organizing process when tip reorientation is not required. The polarized cytoplasm of pollen tubes is divided into several structurally distinct zones.

quest for the central players governing pollen tube growth Plasma membrane H ATPases sustain pollen tube growth

In Arabidopsis (Arabidopsis thaliana) pollen tubes, the oscillations in intracellular pH in both the shank and tip are synchronized with growth rate with a period of around 0.6 min. Triple mutant pollen tubes in which the Autoinhibited plasma membrane H +-ATPase6 (AHA6), AHA8, and AHA9 have been mutated show a greatly decreased amplitude of synchronized pH and growth rate oscillations with a period of

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