1
|
Liu R, Cui B, Lu X, Song J. The positive effect of salinity on nitrate uptake in Suaeda salsa. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2021; 166:958-963. [PMID: 34256249 DOI: 10.1016/j.plaphy.2021.07.010] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/18/2021] [Revised: 07/08/2021] [Accepted: 07/08/2021] [Indexed: 05/11/2023]
Abstract
Nitrate plays both nutritional and osmotic roles in the salt tolerance of halophytes. However, how halophytes take up NO3- under saline conditions is still not well understood. Seedlings of Suaeda salsa L. were treated with 0, 200 and 500 mM NaCl under 0.5 mM NO3--N with or without Na3VO4 (the inhibitor of plasma membrane H+-ATPase) for 24 h. Salinity treatment of 200 mM NaCl up-regulated the gene expression of nitrate transporter 2.1 (SsNRT2.1) in the roots, increased the root net influx of H+ and NO3- and 15NO3- accumulation in the leaves and roots. The expression of SsNRT2.1 at 200 mM NaCl with Na3VO4 was much higher than that without supplying Na3VO4, and the opposite trend was found in 15NO3- accumulation in the leaves and roots. Supplying Na3VO4 had no significant effect on the net H+ flux, but induced a net NO3- efflux in the roots at 200 mM NaCl. Salinity may directly activate the expression of SsNRT2.1 and promote NO3- uptake via the increment of pumping H+ by PM H+-ATPase in S. salsa, which may explain why certain halophytes can absorb and accumulate high concentration of NO3- under low NO3- and high salinity conditions.
Collapse
Affiliation(s)
- Ranran Liu
- Shandong Provincial Key Laboratory of Plant Stress, College of Life Science, Shandong Normal University, Jinan, 250014, PR China
| | - Bing Cui
- Shandong Provincial Key Laboratory of Plant Stress, College of Life Science, Shandong Normal University, Jinan, 250014, PR China
| | - Xiangbin Lu
- Shandong Provincial Key Laboratory of Plant Stress, College of Life Science, Shandong Normal University, Jinan, 250014, PR China
| | - Jie Song
- Shandong Provincial Key Laboratory of Plant Stress, College of Life Science, Shandong Normal University, Jinan, 250014, PR China.
| |
Collapse
|
2
|
Vergara C, Araujo KEC, Sperandio MVL, Santos LA, Urquiaga S, Zilli JÉ. Dark septate endophytic fungi increase the activity of proton pumps, efficiency of 15N recovery from ammonium sulphate, N content, and micronutrient levels in rice plants. Braz J Microbiol 2019; 50:825-838. [PMID: 31090019 PMCID: PMC6863334 DOI: 10.1007/s42770-019-00092-4] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2019] [Accepted: 05/04/2019] [Indexed: 11/25/2022] Open
Abstract
Plants colonised by dark septate endophytic (DSE) fungi show increased uptake of nutrients available in the environment. The objective of the present study was to evaluate the impact of DSE fungi on the activity of proton pumps, nitrogen (N) recovery from ammonium sulphate, and nutrient accumulation in rice plants. Treatments consisted of non-inoculated plants and plants inoculated with two isolates of DSE fungi, A101 and A103. To determine N recovery from the soil, ammonium sulphate enriched with 15N was added to a non-sterile substrate while parameters associated with the activity of proton pumps and with NO3- uptake were determined in a sterile environment. The A101 and A103 fungal isolates colonised the roots of rice plants, promoting 15N uptake, growth, and accumulation of nutrients as compared with the mock control. A103 induced the expression of the plasma membrane H+-ATPase (PM H+-ATPase) isoforms OsA5 and OsA8, the activity of the PM H+-ATPase and H+-pyrophosphatase. Our results suggest that the inoculation of rice plants with DSE fungi represents a strategy to improve the N recovery from ammonium sulphate and rice plant growth through the induction of OsA5 and OsA8 isoforms and stimulation of the PM H+-ATPase and H+-pyrophosphatase.
Collapse
Affiliation(s)
- Carlos Vergara
- Universidade Federal Rural do Rio de Janeiro, Instituto de Agronomia, Seropédica, RJ, Brazil
| | | | | | - Leandro Azevedo Santos
- Universidade Federal Rural do Rio de Janeiro, Instituto de Agronomia, Seropédica, RJ, Brazil
| | - Segundo Urquiaga
- Embrapa Agrobiologia, BR 465, km 07, Seropédica, RJ, 23891-000, Brazil
| | - Jerri Édson Zilli
- Embrapa Agrobiologia, BR 465, km 07, Seropédica, RJ, 23891-000, Brazil.
| |
Collapse
|
3
|
Trevisan S, Francioso O, Quaggiotti S, Nardi S. Humic substances biological activity at the plant-soil interface: from environmental aspects to molecular factors. PLANT SIGNALING & BEHAVIOR 2010; 5:635-43. [PMID: 20495384 PMCID: PMC3001551 DOI: 10.4161/psb.5.6.11211] [Citation(s) in RCA: 92] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
Humic substances (HS) represent the organic material mainly widespread in nature. HS have positive effects on plant physiology by improving soil structure and fertility and by influencing nutrient uptake and root architecture. The biochemical and molecular mechanisms underlying these events are only partially known. HS have been shown to contain auxin and an "auxin-like" activity of humic substances has been proposed, but support to this hypothesis is fragmentary. In this review article, we are giving an overview of available data concerning molecular structures and biological activities of humic substances, with special emphasis on their hormone-like activities.
Collapse
Affiliation(s)
- Sara Trevisan
- Department of Agricultural Biotechnology; University of Padua; Agripolis, Legnaro (Padova) Italy
| | - Ornella Francioso
- Department of Agroenvironmental Science and Technology; University of Bologna Viale Fanin; Bologna, Italy
| | - Silvia Quaggiotti
- Department of Agricultural Biotechnology; University of Padua; Agripolis, Legnaro (Padova) Italy
| | - Serenella Nardi
- Department of Agricultural Biotechnology; University of Padua; Agripolis, Legnaro (Padova) Italy
| |
Collapse
|
4
|
Trevisan S, Borsa P, Botton A, Varotto S, Malagoli M, Ruperti B, Quaggiotti S. Expression of two maize putative nitrate transporters in response to nitrate and sugar availability. PLANT BIOLOGY (STUTTGART, GERMANY) 2008; 10:462-75. [PMID: 18557906 DOI: 10.1111/j.1438-8677.2008.00041.x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
A full-length cDNA encoding a putative high-affinity nitrate transporter (ZmNrt2.2) from maize was isolated and characterised, together with another previously identified transporter (ZmNrt2.1), in terms of phylogenesis, protein structure prediction and regulation of transcript accumulation in response to nitrate and sugar availability. The expression of both genes was evaluated by quantitative and semi-quantitative RT-PCR in response to nitrate and sugar supply and the in planta localisation of mRNA was studied by in situ hybridisation. Data obtained suggested similar genetic evolution and identical transmembrane structure prediction between the two deduced proteins, and differences in both regulation of their expression and mRNA localisation in response to nitrate, leading us to hypothesise a principal role for ZmNRT2.1 in the influx activity and the major involvement of ZmNRT2.2 in the xylem loading process. Our data suggest opposing sugar regulation by ZmNrt2.1 and ZmNrt2.2 transcription in the presence or absence of nitrate and the existence of both hexokinase-dependent and hexokinase-independent transduction mechanisms for the regulation of ZmNrt2.1 and ZmNrt2.2 expression by sugars.
Collapse
Affiliation(s)
- S Trevisan
- Department of Agricultural Biotechnology, University of Padova, Legnaro, Italy
| | | | | | | | | | | | | |
Collapse
|
5
|
Ritchie RJ. Estimation of cytoplasmic nitrate and its electrochemical potential in barley roots using 13NO3 and compartmental analysis. THE NEW PHYTOLOGIST 2006; 171:643-55. [PMID: 16866965 DOI: 10.1111/j.1469-8137.2006.01768.x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
13NO3 was used to determine the intracellular compartmentation of NO3 in barley roots (Hordeum vulgare cv. Klondike), followed by a thermodynamic analysis of nitrate transport. Plants were grown in one-tenth Johnson's medium with 1 mol m3 NO3 (NO3-grown plants) or 1 mol m3 NH4NO3 (NH4NO3-grown plants). The cytoplasmic concentrations of NO3 in roots were only approx. 3-6 mol m3 (half-time for exchange approx. 21 s) in both NO3 and NH4NO3 plants. These pool sizes are consistent with published nitrate microelectrode data, but not with previous compartmental analyses. The electrochemical potential gradient for nitrate across the plasmalemma was +26 +/-1 kJ mol1 in both NO3- and NH4NO3-grown plants, indicating active uptake of nitrate. At an external pH of 6, the plasmalemma electrochemical potential for protons would be approx. -29 +/- 4 kJ mol1. If the cytoplasmic pH was 7.3 +/- 0.2, then 2H+/1NO3 cotransport, or a primary ATP-driven pump (2NO3/1ATP), are both thermodynamically possible. NO3 is also actively transported across the tonoplast (approx. +6 to 7 kJ mol1).
Collapse
Affiliation(s)
- Raymond J Ritchie
- School of Biological Sciences A-08, The University of Sydney, NSW 2006, Australia.
| |
Collapse
|
6
|
Quaggiotti S, Ruperti B, Borsa P, Destro T, Malagoli M. Expression of a putative high-affinity NO3- transporter and of an H+-ATPase in relation to whole plant nitrate transport physiology in two maize genotypes differently responsive to low nitrogen availability. JOURNAL OF EXPERIMENTAL BOTANY 2003; 54:1023-31. [PMID: 12598572 DOI: 10.1093/jxb/erg106] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Two maize genotypes differently responsive to nitrogen availability were characterized for their efficiency in nitrate accumulation via both the LATS (Low-Affinity Transport System) and HATS (High-Affinity Transport System) nitrate uptake systems. In addition, a full-length cDNA encoding a putative high-affinity nitrate transporter (ZmNrt2.1) was isolated and its expression evaluated in both the roots and leaves of the two maize genotypes, together with the expression of a maize H(+)-ATPase isoform (Mha1). The data showed the importance of the iHATS (Inducible High-Affinity System) system efficiency as a physiological marker of adaptation to low input and suggested that the transcript accumulation of ZmNrt2.1 might be a key step for the regulation of iHATS. However, ZmNrt2.1 transcription cannot account for the differences found between the two hybrids in terms of the activity of their respective iHATS and, as a consequence, of their adaptation to low input. Therefore, the involvement of some other transporter(s) or of some post-transcriptional/post-translational mechanism of regulation affecting the efficiency of iHATS may be hypothesized. In addition, the data suggest that the transcription of the Mha1 gene may also be involved in the global efficiency of the iHATS system.
Collapse
Affiliation(s)
- Silvia Quaggiotti
- Department of Agricultural Biotechnology, University of Padua, Agripolis, Strada Romea 16, 35020 Legnaro (Padua), Italy.
| | | | | | | | | |
Collapse
|
7
|
Schubert S. Nitrogen assimilation by legumes - processes and ecological limitations. ACTA ACUST UNITED AC 1995. [DOI: 10.1007/bf00750503] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
|
8
|
Matzke H, Mengel K. Importance of plasmalemma ATPase in the retention and exclusion of inorganic ions. ACTA ACUST UNITED AC 1993. [DOI: 10.1002/jpln.19931560610] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
9
|
Molecular Genetics of Nitrate Reductase in Higher Plants. ADVANCES IN GENETICS 1992. [DOI: 10.1016/s0065-2660(08)60317-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/07/2023]
|
10
|
Hoffmann B, Flänker R, Mengel K. Measurements of pH in the apoplast of sunflower leaves by means of fluorescence. PHYSIOLOGIA PLANTARUM 1992. [PMID: 0 DOI: 10.1111/j.1399-3054.1992.tb08777.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Affiliation(s)
- Bernd Hoffmann
- Institute of Plant Nutrition, Sudanlage 6, D‐6300 Giessen, Germany
| | - Rüdiger Flänker
- Institute of Plant Nutrition, Sudanlage 6, D‐6300 Giessen, Germany
| | - Konad Mengel
- Institute of Plant Nutrition, Sudanlage 6, D‐6300 Giessen, Germany
| |
Collapse
|
11
|
Assimilation of mineral nitrogen and ion balance in the two partners of ectomycorrhizal symbiosis: Data and hypothesis. ACTA ACUST UNITED AC 1991. [DOI: 10.1007/bf01972075] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
|
12
|
Rona J, Cornel D, Pennarun A, Monestiez M, Convert M, Bousquet U, Marigo G. Energetics of OH− or H+ dependent nitrate uptake by Catharanthus roseus cells: Electrophysiological effects. ACTA ACUST UNITED AC 1991. [DOI: 10.1016/0302-4598(91)87004-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
13
|
Rona J, Cornel D, Pennarun A, Monestiez M, Convert M, Bousquet U, Marigo G. Energetics of OH− or H+ dependent nitrate uptake by Catharanthus roseus cells: electrophysiological effects. J Electroanal Chem (Lausanne) 1991. [DOI: 10.1016/0022-0728(91)85628-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|
14
|
Affiliation(s)
- R M Spanswick
- Division of Biological Sciences, Cornell University, Ithaca, New York 14853
| |
Collapse
|
15
|
Oscarson P, Ingemarsson B, Af Ugglas M, Larsson CM. Short-term studies of NO 3 (-) uptake in Pisum using (13)NO 3 (-). PLANTA 1987; 170:550-555. [PMID: 24233019 DOI: 10.1007/bf00402990] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/07/1986] [Accepted: 11/24/1986] [Indexed: 06/02/2023]
Abstract
Influx, efflux and net uptake of NO 3 (-) was studied in Pisum sativum L. cv. Marma in short-term experiments where (13)NO 3 (-) was used to trace influx. The influx rate in N-limited plants was similar both during net uptake at external concentrations of around 50 μM, and at low external NO 3 (-) concentrations (4-6 μM) when net uptake was practically zero. Efflux could be inferred from discrepancies between influx and net uptake but was never very high in the N-limited plants during net uptake. Close to the threshold concentration for not NO 3 (-) uptake, efflux was high and equalled influx. Thus, the threshold concentration can be regarded as a NO 3 (-) compensation point. The inclusion of NH 4 (+) in the outer medium decreased influx by about 40% but did not significantly affect efflux. The roles of NO 3 (-) fluxes and nitrate-reductase activity in regulating/limiting NO 3 (-) utilization are discussed.
Collapse
Affiliation(s)
- P Oscarson
- Department of Botany, University of Stockholm, S-106 91, Stockholm, Sweden
| | | | | | | |
Collapse
|
16
|
Hauter R, Steffens D. Einfluß einer mineralischen und symbiontischen Stickstoffernährung auf Protonenabgabe der Wurzeln, Phosphat-Aufnahme und Wurzelentwicklung von Rotklee. ACTA ACUST UNITED AC 1985. [DOI: 10.1002/jpln.19851480606] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
17
|
Thibaud JB, Romieu C, Gibrat R, Grouzis JP, Grignon C. Local Ionic Environment of Plant Membranes: Effects on Membrane Functions. ACTA ACUST UNITED AC 1984. [DOI: 10.1016/s0044-328x(84)80012-4] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
18
|
|