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




Has Abstract


2021-01-02 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

  • Cytosolic calcium is involved in the regulation of barley hemoglobin gene expression.

    abstract::Hemoglobin gene expression is upregulated during hypoxia. To determine whether the induction occurs via similar mechanisms that have been proposed for other hypoxically induced proteins, barley (Hordeum vulgare L.) aleurone layers were treated with various agents that interfere with known components of signal transduc...


    pub_type: 杂志文章


    authors: Nie X,Durnin DC,Igamberdiev AU,Hill RD

    更新日期:2006-02-01 00:00:00

  • The effect of temperature on glycollate decarboxylation in leaf peroxisomes.

    abstract::[1-(14)C]glycollate was oxidised to(14)CO2 by peroxisomes isolated from leaves of spinach beet about 3 times as rapidly at 35°C as at 25°C; the rate was further increased with rise in temperature to a maximum at 55°C. These increases are shown to be mainly due to the increased H2O2 available to oxidise glyoxylate non-...


    pub_type: 杂志文章


    authors: Grodzinski B,Butt VS

    更新日期:1977-01-01 00:00:00

  • Abscisic-acid contents and concentrations in protoplasts from guard cells and mesophyll cells ofVicia faba L.

    abstract::The abscisic-acid (ABA) contents of isolated guard-cell protoplasts and mesophyll-cell protoplasts fromVicia faba were determined by high-pressure liquid chromatography followed by gas chromatography. The amounts of ABA found immediately after preparation of the protoplasts varied from 90 to 570 amol per guard-cell pr...


    pub_type: 杂志文章


    authors: Lahr W,Raschke K

    更新日期:1988-12-01 00:00:00

  • Abscisic acid and the key enzymes and genes in sucrose-to-starch conversion in rice spikelets in response to soil drying during grain filling.

    abstract:MAIN CONCLUSION:Abscisic acid mediates the effect of post-anthesis soil drying on grain filling through regulating the activities of key enzymes and expressions of genes involved in sucrose-to-starch conversion in rice spikelets. This study investigated if abscisic acid (ABA) would mediate the effect of post-anthesis s...


    pub_type: 杂志文章


    authors: Wang Z,Xu Y,Chen T,Zhang H,Yang J,Zhang J

    更新日期:2015-05-01 00:00:00

  • Antisense RNA for components associated with the oxygen-evolving complex and the Rieske iron/sulfur protein of the tobacco thylakoid membrane suppresses accumulation of mRNA, but not of protein.

    abstract::Homologous cDNA clones of the nuclear-codes 23- and 33-kDa polypeptides of the oxygen-evolving system, as well as the Rieske iron/sulfur protein, were expressed in antisense or sense orientation under the control of the 35S RNA cauliflower mosaic virus promoter in transgenic tobacco (Nicotiana tabacum, L.) in order to...


    pub_type: 杂志文章


    authors: Palomares R,Herrmann RG,Oelmuller R

    更新日期:1993-01-01 00:00:00

  • Subcellular localization of the 2S globulin narbonin in seeds of Vicia narbonensis.

    abstract::Narbonin is a 2S protein from the globulin fraction of narbon bean (Vicia narbonensis L.) cotyledons. Its amino acid composition and the pattern of its regulated accumulation in developing seeds led to the suggestion that narbonin could be a storage protein. Therefore, it was expected to be present in protein bodies o...


    pub_type: 杂志文章


    authors: Steffens P,Van HN,Hillmer S,Saalbach I,Müntz K

    更新日期:1997-09-01 00:00:00

  • The expression of the hydroxyproline-rich glycopeptide systemin precursor A in response to (a)biotic stress and elicitors is indicative of its role in the regulation of the wound response in tobacco (Nicotiana tabacum L.).

    abstract::Two hydroxyproline-rich glycopeptide systemin (TobHS) precursor proteins known as preproTobHypSys-A and B were recently discovered in tobacco (Nicotiana tabacum L.) [Pearce et al. in Nature 411:817-820, 2001]. In this work, the effect of elicitors, insect damage, and abiotic stress on the expression of preproTobHypSys...


    pub_type: 杂志文章


    authors: Rocha-Granados Cdel M,Sánchez-Hernández C,Sánchez-Hernández C,Martínez-Gallardo NA,Ochoa-Alejo N,Délano-Frier JP

    更新日期:2005-11-01 00:00:00

  • Phenylalanine ammonia-lyase and cinnamic acid 4-hydroxylase: Characterisation of the concomitant changes in enzyme activities in illuminated potato tuber discs.

    abstract::Phenylalanine ammonia-lyase (PAL, EC and cinnamic acid 4-hydroxylase (CA4H, EC undergo concomitant increases in activity after a 2 h lag following disc preparation and illumination. The increases in PAL and CA4H activity can be inhibited by actinomycin-D, cordycepin and cycloheximide. It is demons...


    pub_type: 杂志文章


    authors: Lamb CJ

    更新日期:1977-01-01 00:00:00

  • A comparative study of the early osmotic, ionic, redox and hormonal signaling response in leaves and roots of two halophytes and a glycophyte to salinity.

    abstract::Salt stress is one of the most important abiotic stress factors affecting plant growth and productivity in natural ecosystems. In this study, we aimed at determining possible differences between salt tolerant and salt sensitive species in early (within 72 h) salt stress response in leaves and roots. To this purpose, w...


    pub_type: 杂志文章


    authors: Ellouzi H,Ben Hamed K,Hernández I,Cela J,Müller M,Magné C,Abdelly C,Munné-Bosch S

    更新日期:2014-12-01 00:00:00

  • Floral induction by gibberellic acid in Impatiens balsamina, a qualitative short-day plant.

    abstract::In the qualitative short-day plant Impatiens balsamina, gibberellic acid (GA3) not only promoted the formation of floral buds in response to suboptimal photoinductive conditions and reduced the number of SD cycles that are required for their development into flowers, but also caused initiation of floral buds under non...


    pub_type: 杂志文章


    authors: Nanda KK,Krishnamoorthy HN,Anuradha TA

    更新日期:1967-12-01 00:00:00

  • Water deficits accelerate ripening and induce changes in gene expression regulating flavonoid biosynthesis in grape berries.

    abstract::Water deficits consistently promote higher concentrations of anthocyanins in red winegrapes and their wines. However, controversy remains as to whether there is any direct effect on berry metabolism other than inhibition of growth. Early (ED) and late (LD) season water deficits, applied before or after the onset of ri...


    pub_type: 杂志文章


    authors: Castellarin SD,Matthews MA,Di Gaspero G,Gambetta GA

    更新日期:2007-12-01 00:00:00

  • The utilization of paramecia by the carnivorous plant Utricularia gibba.

    abstract::A method has been devised to ensure capture of large numbers of live paramecia within a short period of time under controlled conditions by the bladders of Utricularia gibba. The method permits a direct evaluation of the role of entrapped animals in the nutrition of this carnivorous plant. Paramecia captured by the bl...


    pub_type: 杂志文章


    authors: Sorenson DR,Jackson WT

    更新日期:1968-06-01 00:00:00

  • Characterizations and fine mapping of a mutant gene for high tillering and dwarf in rice (Oryza sativa L.).

    abstract::A rice htd-1 mutant, related to tillering and dwarfing, was characterized. We show that the htd-1 mutant increases its tiller number by releasing axillary buds from dormant stage rather than by initiating more axillary buds. The dwarf is caused by averagely reducing each internode and panicle. Based on this dwarfing p...


    pub_type: 杂志文章


    authors: Zou J,Chen Z,Zhang S,Zhang W,Jiang G,Zhao X,Zhai W,Pan X,Zhu L

    更新日期:2005-11-01 00:00:00

  • Intrusive growth of flax phloem fibers is of intercalary type.

    abstract::Flax (Linum usitatissimum L.) phloem fibers elongate considerably during their development and intrude between existing cells. We questioned whether fiber elongation is caused by cell tip growth or intercalary growth. Cells with tip growth are characterized by having two specific zones of cytoplasm in the cell tip, on...


    pub_type: 杂志文章


    authors: Ageeva MV,Petrovská B,Kieft H,Sal'nikov VV,Snegireva AV,van Dam JE,van Veenendaal WL,Emons AM,Gorshkova TA,van Lammeren AA

    更新日期:2005-11-01 00:00:00

  • Involvement of the Golgi apparatus in the secretion of α-amylase from gibberellin-treated barley aleurone cells.

    abstract::Localisation of α-amylase (EC in barley aleurone cells treated with gibberellic acid has been achieved using protein A-gold-labelled polyclonal antibodies. Gold particles were located almost exclusively over the lumen of the rough endoplasmic reticulum and cisternae of the Golgi apparatus. The label was most ...


    pub_type: 杂志文章


    authors: Gubler F,Jacobsen JV,Ashford AE

    更新日期:1986-09-01 00:00:00

  • Regulation of stipule development by COCHLEATA and STIPULE-REDUCED genes in pea Pisum sativum.

    abstract::Pisum sativum L., the garden pea crop plant, is serving as the unique model for genetic analyses of morphogenetic development of stipule, the lateral organ formed on either side of the junction of leafblade petiole and stem at nodes. The stipule reduced (st) and cochleata (coch) stipule mutations and afila (af), tendr...


    pub_type: 杂志文章


    authors: Kumar S,Mishra RK,Kumar A,Srivastava S,Chaudhary S

    更新日期:2009-08-01 00:00:00

  • Overexpression of the sucrose transporter SoSUT1 in potato results in alterations in leaf carbon partitioning and in tuber metabolism but has little impact on tuber morphology.

    abstract::The aim of this work was to examine the consequences of the heterologous expression of a spinach ( Spinacia oleracea L.) sucrose transporter ( SoSUT1) in potato ( Solanum tuberosum L.). Many studies have indicated that reduction of the expression of this class of sucrose transporter has deleterious effects on plant gr...


    pub_type: 杂志文章


    authors: Leggewie G,Kolbe A,Lemoine R,Roessner U,Lytovchenko A,Zuther E,Kehr J,Frommer WB,Riesmeier JW,Willmitzer L,Fernie AR

    更新日期:2003-05-01 00:00:00

  • Nitrate reductase of rice (Oryza sativa L.) under foot-rot disease.

    abstract::Studies reported here reveal a low nitrate reductase activity in the shoots of MTU 9 rice plants while in roots high enzyme activity has been recorded.Under pathogenesis, a low nitrate reductase activity in the roots and a high enzyme activity in the shoots have been recorded in susceptible rice plants. In the resista...


    pub_type: 杂志文章


    authors: Singh TK,Subramanian S

    更新日期:1966-06-01 00:00:00

  • Botanical aspects of cell-free protein synthesizing systems from cereal embryos.

    abstract::Some botanical aspects of cell-free protein synthesizing systems from cereal embryos have been investigated. The composition of the starting material determines both the stability and translation fidelity of the cell-free extracts. The active components of the extracts originate exclusively from the primary axes. Cont...


    pub_type: 杂志文章


    authors: Peumans WJ,Carlier AR,Caers LI

    更新日期:1980-01-01 00:00:00

  • Iron deficiency-mediated stress regulation of four subgroup Ib BHLH genes in Arabidopsis thaliana.

    abstract::Networks of transcription factors control physiological, developmental and environmental responses. Root iron acquisition responses are controlled by the essential bHLH protein FIT. Recently, two group Ib BHLH genes were reported to be iron deficiency-regulated. Here, we studied expression patterns of these two group ...


    pub_type: 杂志文章


    authors: Wang HY,Klatte M,Jakoby M,Bäumlein H,Weisshaar B,Bauer P

    更新日期:2007-09-01 00:00:00

  • Circular RNA architecture and differentiation during leaf bud to young leaf development in tea (Camellia sinensis).

    abstract:MAIN CONCLUSION:Circular RNA (circRNA) discovery, expression patterns and experimental validation in developing tea leaves indicates its correlation with circRNA-parental genes and potential roles in ceRNA interaction network. Circular RNAs (circRNAs) have recently emerged as a novel class of abundant endogenous stable...


    pub_type: 杂志文章


    authors: Tong W,Yu J,Hou Y,Li F,Zhou Q,Wei C,Bennetzen JL

    更新日期:2018-12-01 00:00:00

  • Biosynthesis of (1,3)(1,4)-beta-glucan and (1,3)-beta-glucan in barley (Hordeum vulgare L.). Properties of the membrane-bound glucan synthases.

    abstract::Mixed membrane preparations from the coleoptiles and first leaves of young barley (Hordeum vulgare L. cv. Triumph) plants catalysed the synthesis of 55% methanol-insoluble labelled material from UDP-[U-14C]glucose, the main components of which were identified as (1,3)(1,4)-beta- and (1,3)-beta-D-glucans. The membrane ...


    pub_type: 杂志文章


    authors: Becker M,Vincent C,Reid JS

    更新日期:1995-01-01 00:00:00

  • Leaf senescence in a non-yellowing mutant of Festuca pratensis : III. Total acyl lipids of leaf tissue during senescence.

    abstract::The lipid compositions of leaves from Festuca pratensis cv. Rossa (yellowing) were compared with those from a non-yellowing mutant, Bf 993. The leaves of Bf 993 contained a higher level of acyl lipids on both a fresh-weight and a dry-weight basis. Diacylgalactosylglycerol, diacylgalabiosylglycerol and phosphatidylinos...


    pub_type: 杂志文章


    authors: Harwood JL,Jones AV,Thomas H

    更新日期:1982-11-01 00:00:00

  • Cytosolic cycles regulate the turnover of sucrose in heterotrophic cell-suspension cultures of Chenopodium rubrum L.

    abstract::We have investigated whether sucrose accumulation in heterotrophic cell-suspension cultures of Chenopodium rubrum L. is regulated by a cycle in which sucrose is simultaneously synthesised and degraded. Net sucrose accumulation was measured by monitoring the sucrose content, unidirectional synthesis was monitored by su...


    pub_type: 杂志文章


    authors: Dancer J,Hatzfeld WD,Stitt M

    更新日期:1990-09-01 00:00:00

  • Phytochrome and hormonal control of expansion and greening of etiolated wheat leaves.

    abstract::Unrolling of etiolated wheat leaf segments is stimulated by short periods of exposure to red light. Both gibberellic acid and kinetin will stimulate unrolling in the dark, whereas abscisic acid (ABA) inhibits the unrolling response to these two hormones and to red light. Exposure to 5 minutes of red light leads to a r...


    pub_type: 杂志文章


    authors: Beevers L,Loveys B,Pearson JA,Wareing PF

    更新日期:1970-09-01 00:00:00

  • Three maize root-specific genes are not correctly expressed in regenerated caps in the absence of the quiescent center.

    abstract::The quiescent center is viewed as an architectural template in the root apical meristem of all angiosperm and gymnosperm root tips. In roots of Arabidopsis thaliana (L.) Heynh., the quiescent center inhibits differentiation of contacting initial cells and maintains the surrounding initial cells as stem cells. Here, th...


    pub_type: 杂志文章


    authors: Ponce G,Luján R,Campos ME,Reyes A,Nieto-Sotelo J,Feldman LJ,Cassab GI

    更新日期:2000-06-01 00:00:00

  • Potassium permanganate fixative and the electron microscopy of sieve tube contents.

    abstract::Sieve tube "slime" is probably fibrillar as suggested by other workers. The granular material seen in electron micrographs of sieve tubes "fixed" with potassium permanganate is mostly a precipitate produced by the reaction of the permanganate with the sieve tube contents, particularly with sucrose, and with reagents u...


    pub_type: 杂志文章


    authors: Johnson RP

    更新日期:1966-03-01 00:00:00

  • [Studies on the association of 5-dehydroquinate hydro-lyase and shikimate: NADP(+)-oxidoreductase in higher plants].

    abstract::The properties of two enzymes involved in the shikimic acid pathway, dehydroquinate hydro-lyase and shikimate: NADP(+) oxidoreductase were studied in different species of higher plants (pteridophytes, gymnosperms, angiosperms) using chromatography on Sephadex G 100, DEAE cellulose, hydroxylapatite and isoelectric focu...


    pub_type: 杂志文章


    authors: Boudet AM,Lécussan R

    更新日期:1974-03-01 00:00:00

  • Activation of a pea membrane protein kinase by calcium ions.

    abstract::Membranes from the buds of Pisum sativum L. contain a protein kinase which is activated 5- to 15-fold by micromolar levels of calcium. Best calcium activations were found with light-membrane fractions, and on density gradients these band at a similar position to the plasma membrane. Other heavier membranes, however, a...


    pub_type: 杂志文章


    authors: Hetherington AM,Trewavas A

    更新日期:1984-07-01 00:00:00