Specific tissue proteins 1 and 6 are involved in root biology during normal development and under symbiotic and pathogenic interactions in Medicago truncatula.


MAIN CONCLUSION:ST1 and ST6 are possibly involved in primary and lateral root and symbiotic nodule development, but only ST6 participates in the interaction with hemibiotrophic fungi. Specific tissue (ST) proteins have been shown to be involved in several processes related to plant nutritional status, development, and responses to biotic agents. In particular, ST1 and ST6 are mainly expressed in roots throughout plant development. Here, we analyze where and how the expression of the genes encoding both proteins are modulated in the legume model plant Medicago truncatula in response to the plant developmental program, nodulation induced by a beneficial nitrogen-fixing bacterium (Sinorhizobium meliloti) and the defense response triggered by a pathogenic hemibiotrophic fungus (Fusarium oxysporum). Gene expression results show that ST1 and ST6 participate in the vasculature development of both primary and lateral roots, although only ST6 is related to meristem activity. ST1 and ST6 clearly display different roles in the biotic interactions analyzed, where ST1 is activated in response to a N2-fixing bacterium and ST6 is up-regulated after inoculation with F. oxysporum. The role of ST1 and ST6 in the nodulation process may be related to nodule organogenesis rather than to the establishment of the interaction itself, and an increase in ST6 correlates with the activation of the salicylic acid signaling pathway during the infection and colonization processes. These results further support the role of ST6 in response to hemibiotrophic fungi. This research contributes to the understanding of the complex network that controls root biology and strengthens the idea that ST proteins are involved in several processes such as primary and lateral root development, nodule organogenesis, and the plant-microbe interaction.






Albornos L,Casado-Del-Castillo V,Martín I,Díaz-Mínguez JM,Labrador E,Dopico B




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2021-01-02 00:00:00
















  • Cell wall regeneration and cell division in isolated tobacco mesophyll protoplasts.

    abstract::Protoplasts were isolated from palisade tissue of tobacco leaves by treatment with pectinase and cellulase under aseptic conditions, and were cultured in a synthetic liquid medium. Calcofluor, a fluorescent brightener, was found to be an excellent stain for plant cell walls and was used to demonstrate regeneration of ...


    pub_type: 杂志文章


    authors: Nagata T,Takebe I

    更新日期:1970-12-01 00:00:00

  • Silicic-acid uptake in diatoms studied with [(68)Ge]germanic acid as tracer.

    abstract::Uptake of silicic acid in the diatoms Navicula pelliculosa and Nitzschia alba was studied, using the natural isotope, (28)Si, or a radioisotope, (31)Si. The rate of uptake of silicic acid was also determined by using [(68)Ge]germanic acid as a tracer of silicic acid. At a given silicicacid concentration in the growth ...


    pub_type: 杂志文章


    authors: Azam F

    更新日期:1974-01-01 00:00:00

  • NopA64, a novel nucleolar phosphoprotein from proliferating onion cells, sharing immunological determinants with mammalian nucleolin.

    abstract::Five major soluble nuclear proteins associated with cell proliferation were identified in Allium cepa L. root cells. One of them, of 64 kDa, was revealed by Western blotting with anti-mammalian nucleolin antibodies. A polyclonal antibody raised against this protein, which we have named NopA64, localised it in the nucl...


    pub_type: 杂志文章


    authors: de Cárcer G,Cerdido A,Medina FJ

    更新日期:1997-01-01 00:00:00

  • Cytology of induced systemic resistance of cucumber to Colletotrichum lagenarium.

    abstract::The infection of cucumber leaves by Colletotrichum lagenarium was studied using cytological methods. Its progress in untreated plants was compared with that in plants in which systemic resistance had been induced by pre-infecting the first true leaf with the same fungus. In induced plants, a reduction of fungal develo...


    pub_type: 杂志文章


    authors: Kováts K,Binder A,Hohl HR

    更新日期:1991-03-01 00:00:00

  • Efficient translation of long-lived messengers in extracts from dry pea primary axes : Evidence for the presence of lectin mRNA.

    abstract::Extracts prepared from dry pea (Pisum sativum, L; cv oberon) primary axes translate efficiently their endogenous messengers in an in vitro protein synthesizing system. The native long-lived messengers are biologically fully active and direct the synthesis of a whole range of polypeptides with MW ranging up to 130,000....


    pub_type: 杂志文章


    authors: Peumans WJ,Delaey BM,Manickam A,Carlier AR

    更新日期:1980-12-01 00:00:00

  • Fe-deficiency-induced expression of bHLH104 enhances Fe-deficiency tolerance of Arabidopsis thaliana.

    abstract:MAIN CONCLUSION:Expression of bHLH104 - GFP driven by the MYB72 promoter improves plants' tolerance to Fe deficiency and increases seed Fe concentrations. Iron (Fe) deficiency causes reduced crop yield and quality. In humans, Fe deficiency is directly associated with Fe-deficiency anemia. Therefore, breeding Fe-deficie...


    pub_type: 杂志文章


    authors: Wang C,Yao X,Yu D,Liang G

    更新日期:2017-09-01 00:00:00

  • Free and membrane bound ribosomes of the cotyledons of Vicia faba (L.) : I. Seed development.

    abstract::Changes in the quantities of free and membrane-bound ribosomes were followed in the cotyledons of developing seeds. During the phase of storage protein synthesis, free and membrane bound ribosomes do not interchange, and as both classes synthesise protein in vivo, it is possible that they may synthesise different grou...


    pub_type: 杂志文章


    authors: Payne PI,Bouter D

    更新日期:1969-09-01 00:00:00

  • The effect of Cl(-) upon the sensitivity of starch-containing and starch-deficient stomata and guard cell protoplasts towards potassium ions, fusicoccin and abscisic acid.

    abstract::Chloride ions are necessary to compensate for the positively charged potassium ions imported into guard cells of Allium cepa L. during stomatal opening. Therefore an external Cl(-) supply of intact Allium plants is important. But high levels of chloride have been found to reduce the sensitivity of the starch-lacking s...


    pub_type: 杂志文章


    authors: Schnabl H

    更新日期:1978-01-01 00:00:00

  • Characterization of germination-specific lipid transfer proteins from Euphorbia lagascae.

    abstract::The endosperm of Euphorbia lagascae Spreng. seeds contains high levels of the epoxidated fatty acid vernolic acid ( cis-12-epoxyoctadeca-cis-9-enoic acid). To obtain transgenic oilcrops producing high levels of vernolic acid, better knowledge of its endogenous metabolism is needed. In this paper we study the gene acti...


    pub_type: 杂志文章


    authors: Edqvist J,Farbos I

    更新日期:2002-05-01 00:00:00

  • Site-specific phosphorylation of L-form starch phosphorylase by the protein kinase activity from sweet potato roots.

    abstract::A 78-amino acid insertion (L78) is found in the low-affinity type (L-form) of starch phosphorylase (L-SP, EC This insertion blocks the starch-binding site on the L-SP molecule, and it decreases the binding affinity of L-SP toward starch. The computational analysis of the amino acid sequence on L78 predicts s...


    pub_type: 杂志文章


    authors: Young GH,Chen HM,Lin CT,Tseng KC,Wu JS,Juang RH

    更新日期:2006-02-01 00:00:00

  • Frond development and CO2-fixation in Laminaria hyperborea.

    abstract::Discs punched out of different zones of the found of Laminaria hyperborea (Gunn.) Fossl. were exposed to H(14)CO3 (-) in the light and in the dark for various lengths of time. Photosynthetic rates in young and old parts were in the same range, 12-39 μmol CO2 dm(-2) h(-1) at 4°C, whereas dark fixation was remarkably hi...


    pub_type: 杂志文章


    authors: Willenbrink J,Rangoni-Kübbeler M,Tersky B

    更新日期:1975-01-01 00:00:00

  • Photosynthesis in sugar beet depends on root growth.

    abstract::Sugar-beet plants, germinated in growth cabinets at 20°C and transplanted into the field after 3 weeks, developed much larger roots than plants grown from seed drilled directly into the soil. At the end of the season, the roots of transplants were 39% greater than from drilled seed-an increase of 14 m tons per hectare...


    pub_type: 杂志文章


    authors: Humphries EC,French SA

    更新日期:1969-03-01 00:00:00

  • Composition, ultrastructure and function of the cutin- and suberin-containing layers in the leaf, fruit peel, juice-sac and inner seed coat of grapefruit (Citrus paradisi Macfed.).

    abstract::Cutin and suberin polymers from various anatomical regions of grapefruit were analyzed chemically and ultrastructurally. The leaf, fruit peel and juice-sac showed an amorphous cuticular layer. The cutin in the leaf was composed of 10,16-dihydroxy C16 acid and its positional isomers as the major monomers whereas 16-hyd...


    pub_type: 杂志文章


    authors: Espelie KE,Davis RW,Kolattukudy PE

    更新日期:1980-10-01 00:00:00

  • Vanillin biosynthetic pathways in plants.

    abstract:MAIN CONCLUSION:The present review compiles the up-to-date knowledge on vanillin biosynthesis in plant systems to focus principally on the enzymatic reactions of in planta vanillin biosynthetic pathway and to find out its impact and prospect in future research in this field. Vanillin, a very popular flavouring compound...


    pub_type: 杂志文章,评审


    authors: Kundu A

    更新日期:2017-06-01 00:00:00

  • Continuous-light tolerance in tomato is graft-transferable.

    abstract::Continuous light induces a potentially lethal injury in domesticated tomato (Solanum lycopersicum) plants. Recently, continuous-light tolerance was reported in several wild tomato species, yet the molecular mechanisms underpinning tolerance/sensitivity are still elusive. Here, we investigated from which part of the pl...


    pub_type: 杂志文章


    authors: Velez-Ramirez AI,van Ieperen W,Vreugdenhil D,Millenaar FF

    更新日期:2015-01-01 00:00:00

  • The vaccine adjuvant extra domain A from fibronectin retains its proinflammatory properties when expressed in tobacco chloroplasts.

    abstract::We previously showed that recombinant extra domain A from fibronectin (EDA) purified from Escherichia coli was able to bind to toll-like receptor 4 (TLR4) and stimulate production of proinflammatory cytokines by dendritic cells. Because EDA could be used as an adjuvant for vaccine development, we aimed to express it f...


    pub_type: 杂志文章


    authors: Farran I,McCarthy-Suárez I,Río-Manterola F,Mansilla C,Lasarte JJ,Mingo-Castel AM

    更新日期:2010-03-01 00:00:00

  • Changes in the permeability of the inner mitochondrial membrane associated with plastid development.

    abstract::Mitochondria isolated from greening etiolated laminae of Avena sativa L. show changes in the permeability of their inner membranes during chloroplast development similar to those described earlier for plastids. Oxalo-acetate, succinate and α-keto-glutarate permeate most readily inner membranes of mitochondria isolated...


    pub_type: 杂志文章


    authors: Hampp R,Wellburn AR

    更新日期:1976-01-01 00:00:00

  • The gibberellin 13-oxidase that specifically converts gibberellin A9 to A20 in Tripterygium wilfordii is a 2-oxoglutarate-dependent dioxygenase.

    abstract:MAIN CONCLUSION:A novel GA13-oxidase ofTripterygium wilfordii, TwGA13ox, is a 2-oxoglutarate-dependent dioxygenase. It specifically catalyzes the conversion of GA9to GA20, but not GA4to GA1. Gibberellins (GAs) play essential roles in plant growth and development. Previous characterization of GA20- and GA3-oxidases yiel...


    pub_type: 杂志文章


    authors: Zhang Y,Su P,Wu X,Zhou J,Zhao Y,Hu T,Tong Y,Huang L,Gao W

    更新日期:2019-11-01 00:00:00

  • An auxin-inducible gene from loblolly pine (Pinus taeda L.) is differentially expressed in mature and juvenile-phase shoots and encodes a putative transmembrane protein.

    abstract::We have isolated a gene from loblolly pine, 5NG4, that is highly and specifically induced by auxin in juvenile loblolly pine shoots prior to adventitious root formation, but substantially down-regulated in physiologically mature shoots that are adventitious rooting incompetent. 5NG4 was highly auxin-induced in roots, ...


    pub_type: 杂志文章


    authors: Busov VB,Johannes E,Whetten RW,Sederoff RR,Spiker SL,Lanz-Garcia C,Goldfarb B

    更新日期:2004-04-01 00:00:00

  • [The kinetics of ion uptake by young and old branches of mnium cuspidatum].

    abstract::Isotherms of K(Rb)-, Cl- and SO4-uptake by young and old branches of the moss Mnium cuspidatum were investigated. Old moss gametophytes from the 1966 vegetation period were collected in the forests surrounding Darmstadt from February to mid-April 1967 and from the 1967 season in late September 1967. Young plants were ...


    pub_type: 杂志文章


    authors: Lüttge U,Bauer K

    更新日期:1968-09-01 00:00:00

  • Heterogeneous inhibition of photosynthesis over the leaf surface of rosa rubiginosa L. during water stress and abscisic acid treatment: induction of a metabolic component by limitation of CO(2) diffusion

    abstract::The contribution of changes in stomatal conductance and metabolism in determining heterogeneous photosynthesis inhibition during dehydration and abscisic acid (ABA) feeding was investigated using detached leaves of Rosa rubiginosa L. The steady-state and maximal rates of electron transport under a transient high CO(2)...


    pub_type: 杂志文章


    authors: Meyer S,Genty B

    更新日期:1999-11-01 00:00:00

  • The involvement of mitochondrial phosphate transporter in accelerating bud dormancy release during chilling treatment of tree peony (Paeonia suffruticosa).

    abstract::A cDNA clone was isolated from tree peony (Paeonia suffruticosa) subtractive cDNA library of burst buds and characterized with regard to its sequence, expression in response to chilling treatment during the release of bud dormancy, and its function in transgenic Arabidopsis thaliana. The clone, designated as PsMPT, co...


    pub_type: 杂志文章


    authors: Huang X,Zhu W,Dai S,Gai S,Zheng G,Zheng C

    更新日期:2008-09-01 00:00:00

  • Transcriptomic variation of the flower-fruit transition in Physalis and Solanum.

    abstract:MAIN CONCLUSION:Gene expression variations in response to fertilization between Physalis and Solanum might play essential roles in species divergence and fruit evolution. Fertilization triggers variation in fruit development and morphology. The Chinese lantern, a morphological novelty derived from the calyx, is formed ...


    pub_type: 杂志文章


    authors: Gao H,Li J,Wang L,Zhang J,He C

    更新日期:2020-07-27 00:00:00

  • Role of cytokinin in the regulation of root gravitropism.

    abstract::The models explaining root gravitropism propose that the growth response of plants to gravity is regulated by asymmetric distribution of auxin (indole-3-acetic acid, IAA). Since cytokinin has a negative regulatory role in root growth, we suspected that it might function as an inhibitor of tropic root elongation during...


    pub_type: 杂志文章


    authors: Aloni R,Langhans M,Aloni E,Ullrich CI

    更新日期:2004-11-01 00:00:00

  • Overexpression of wheat transcription factor (TaHsfA6b) provides thermotolerance in barley.

    abstract:MAIN CONCLUSION:Overexpressing a heat shock factor gene (TaHsfA6bT) from wheat provides thermotolerance in barley by constitutive expression of heat and other abiotic stress-response genes. Temperature is one of the most crucial abiotic factors defining the yield potential of temperate cereal crops, such as barley. The...


    pub_type: 杂志文章


    authors: Poonia AK,Mishra SK,Sirohi P,Chaudhary R,Kanwar M,Germain H,Chauhan H

    更新日期:2020-09-18 00:00:00

  • Regulation of sedoheptulose-1,7-bisphosphatase by sedoheptulose-7-phosphate and glycerate, and of fructose-1,6-bisphosphatase by glycerate in spinach chloroplasts.

    abstract::Using partially purified sedoheptulose-1,7-bisphosphatase from spinach (Spinacia oleracea L.) chloroplasts the effects of metabolites on the dithiothreitoland Mg(2+)-activated enzyme were investigated. A screening of most of the intermediates of the Calvin cycle and the photorespiratory pathway showed that physiologic...


    pub_type: 杂志文章


    authors: Schimkat D,Heineke D,Heldt HW

    更新日期:1990-04-01 00:00:00

  • Extracellular calmodulin-binding proteins in plants: purification of a 21-kDa calmodulin-binding protein.

    abstract::A 21-kDa calmodulin (CaM)-binding protein and a 19-kDa calmodulin-binding protein were detected in 0.1 M CaCl2 extracts of Angelica dahurica L. suspension-cultured cells and carrot (Daucus carota L.) suspension-cultured cells, respectively, using a biotinylated cauliflower CaM gel-overlay technique in the presence of ...


    pub_type: 杂志文章


    authors: Jun T,Shupin W,Juan B,Daye S

    更新日期:1996-04-01 00:00:00

  • Molecular, functional and ultrastructural characterisation of plastids from six species of the parasitic flowering plant genus Cuscuta.

    abstract::Plastids of Cuscuta reflexa Roxb., C. subinclusa D. et H., C. gronovii Willd. and C. campestris Yunck. possess thylakoids and contain both chlorophyll a and b in a ratio similar to that of stem tissue of the systematically closely related but 'normal' green Ipomoea tricolor. In contrast, plastids of C. odorata R. et P...


    pub_type: 杂志文章


    authors: van der Kooij TA,Krause K,Dörr I,Krupinska K

    更新日期:2000-04-01 00:00:00

  • The 135-kDa actin-bundling protein from lily pollen tubes arranges F-actin into bundles with uniform polarity.

    abstract::A plant 135-kDa actin-bundling protein (P-135-ABP) isolated from pollen tubes of Lilium longiflorum (Thunb.) binds stoichiometrically to F-actin filaments and bundles them in vitro (E. Yokota et al., 1998, Plant Physiol. 116: 1421-1429). To further understand the mechanism of actin-filament bundle formation by P-135-A...


    pub_type: 杂志文章


    authors: Yokota E,Shimmen T

    更新日期:1999-08-12 00:00:00

  • Is auxin involved in the induction of genetic instability in barley homeotic double mutants?

    abstract:MAIN CONCLUSION:The triggers of genetic instability in barley homeotic double mutants are tweaky spike -type mutations associated with an auxin imbalance in separate spike phytomeres. Barley homeotic tweaky spike;Hooded (tw;Hd) double mutants are characterized by an inherited instability of spike and flower development...


    pub_type: 杂志文章


    authors: Šiukšta R,Vaitkūnienė V,Rančelis V

    更新日期:2018-02-01 00:00:00