Abstract：
:ALTERED MERISTEM PROGRAM 1 (AMP1) encodes a putative glutamate-carboxypeptidase important for plant growth and development. In this study, by comparing the growth of Arabidopsis wild-type, amp1-10 and amp1-13 mutants, and AMP1-GFP/OX2- and AMP1-GFP/OX7-overexpressing seedlings in vitro and in soil, we uncover the role of AMP1 in biomass accumulation in Arabidopsis. AMP1-overexpressing plants had longer primary roots and increased lateral root number and density than the WT, which correlated with improved root, shoot, and total biomass accumulation. AMP1-overexpressing seedlings had an enhanced rate of growth of primary roots, and accordingly, sucrose supplementation restored primary root growth and promoted lateral root formation in amp1 mutants, while reproductive development, fruit size, and seed content were also modified according to disruption or overexpression of AMP1. We further found that AMP1 plays an important role for stomatal development, guard cell functioning, and carbon assimilation. These data help explain the pleiotropic functions of AMP1 in both root and shoot system development, possibly acting in a sugar-dependent manner for regulation of root architecture, biomass accumulation, and seed production.
journal_name
Protoplasmajournal_title
Protoplasmaauthors
López-García CM,Ruíz-Herrera LF,López-Bucio JS,Huerta-Venegas PI,Peña-Uribe CA,de la Cruz HR,López-Bucio Jdoi
10.1007/s00709-019-01458-zsubject
Has Abstractpub_date
2020-03-01 00:00:00pages
573-582issue
2eissn
0033-183Xissn
1615-6102pii
10.1007/s00709-019-01458-zjournal_volume
257pub_type
杂志文章相关文献
PROTOPLASMA文献大全abstract：:Cytoplasmic streaming is essential for intracellular communications but its specific functions are not well known. In Chara corallina internodes, long-distance interactions mediated by cyclosis are clearly evident with microscopy-pulse amplitude modulation (PAM) fluorometer under application of localized light (LL) pu...
journal_title：Protoplasma
pub_type： 杂志文章
doi：10.1007/s00709-016-0975-x
更新日期：2017-01-01 00:00:00
abstract：:Capitate glandular trichomes (CGT) of sunflower, Helianthus annuus, synthesize bioactive sesquiterpene lactones (STLs) within a short period of only a few days during trichome development. In the current project, the subcellular localization of H. annuus germacrene A monooxygenase (HaGAO), a key enzyme of the STL bios...
journal_title：Protoplasma
pub_type： 杂志文章
doi：10.1007/s00709-015-0823-4
更新日期：2016-03-01 00:00:00
abstract：:Here, we describe the development of chloroplasts and the buildup of the thylakoid membranes in growing Arabidopsis leaves. Organelles were analyzed from three distinct positions, namely, at the tip, the upper leaf margin, and the base from leaves 1, 3, 5, and 7 of 14-day-old plants. Clear developmental gradients are ...
journal_title：Protoplasma
pub_type： 杂志文章
doi：10.1007/s00709-016-1057-9
更新日期：2017-09-01 00:00:00
abstract：:Plant embryogenesis is regulated by differential distribution of the plant hormone auxin. However, the cells establishing these gradients during microspore embryogenesis remain to be identified. For the first time, we describe, using the DR5 or DR5rev reporter gene systems, the GFP- and GUS-based auxin biosensors to m...
journal_title：Protoplasma
pub_type： 杂志文章
doi：10.1007/s00709-014-0616-1
更新日期：2014-09-01 00:00:00
abstract：:Two novel beta-expansin genes, TaEXPB1 and TaEXPB2, were isolated from wheat microspores by suppression subtractive hybridisation. Northern blot and reverse transcription PCR analyses showed that the expression of both genes was restricted to early stages of male gametophyte development (from microspores to immature p...
journal_title：Protoplasma
pub_type： 杂志文章
doi：10.1007/s00709-006-0176-0
更新日期：2006-08-01 00:00:00
abstract：:The mitotic chromosome structure of 45S rDNA site gaps in Lolium perenne was studied by atomic force microscope (AFM) combining with fluorescence in situ hybridization (FISH) analysis in the present study. FISH on the mitotic chromosomes showed that 45S rDNA gaps were completely broken or local despiralizations of the...
journal_title：Protoplasma
pub_type： 杂志文章
doi：10.1007/s00709-009-0051-x
更新日期：2009-07-01 00:00:00
abstract：:Formation of intra-molecular disulfides and concomitant oxidative protein folding is essential for stability and catalytic function of many soluble and membrane-bound proteins in the endomembrane system, the mitochondrial inter-membrane space and the thylakoid lumen. Disulfide generation from free cysteines in nascent...
journal_title：Protoplasma
pub_type： 杂志文章,评审
doi：10.1007/s00709-012-0463-x
更新日期：2013-08-01 00:00:00
abstract：:Turions, which are modified shoot apices, are vegetative, dormant overwintering organs produced by perennial aquatic plants. In this study, the turion cytochemistry and ultrastructure of Aldrovanda vesiculosa, Utricularia vulgaris and U. stygia were compared with particular emphasis placed on storage substances. These...
journal_title：Protoplasma
pub_type： 杂志文章
doi：10.1007/s00709-014-0646-8
更新日期：2014-11-01 00:00:00
abstract：:1. Cells of Schizosaccharomyces pombe from the stationary growth phase show only a low capacity for the uptake of xanthine. In the presence of 2 muM xanthine, the initial uptake rate is found in the range of 6-10- minus 21 Moles times Cells- minus 1 times Min- minus 1 at 30 degrees C. 2. Preincubation in glucose solut...
journal_title：Protoplasma
pub_type： 杂志文章
doi：10.1007/BF02075948
更新日期：1975-01-01 00:00:00
abstract：:Chlamydomonas acidophila LAFIC-004 is an acidophilic strain of green microalgae isolated from coal mining drainage. In the present work, this strain was cultivated in acidic medium (pH 3.6) under phototrophic, mixotrophic, and heterotrophic regimes to determine the best condition for growth and lipid production, simul...
journal_title：Protoplasma
pub_type： 杂志文章
doi：10.1007/s00709-016-1030-7
更新日期：2017-05-01 00:00:00
abstract：:Ascorbate has been related to the differentiation of several mesenchymal cells including haematopoietic cells. We have previously demonstrated that ascorbate enhances the activity of 1 alpha,25-dihydroxyvitamin D3 (1 alpha,25(OH)2D3) on monocytic differentiation of HL-60 cells. Here, we show that ascorbate-mediated mo...
journal_title：Protoplasma
pub_type： 杂志文章
doi：10.1007/BF01289422
更新日期：2001-01-01 00:00:00
abstract：:Reactive carbonyl species methylglyoxal (MG) has always been regarded as a cytotoxic metabolite, but now is emerging to function as signal molecule in plants. However, whether MG can induce salt tolerance is elusive. In this study, treatment of wheat seeds with NaCl reduced seed germination, plant height, root length,...
journal_title：Protoplasma
pub_type： 杂志文章
doi：10.1007/s00709-017-1094-z
更新日期：2017-09-01 00:00:00
abstract：:The purpose of the main research was to investigate the effects of methyl jasmonate (MeJA) (0.05, 0.25, 0.5, and 2.5 mM) on the pollen germination and tube elongation of Pinus nigra. Total pollen germination rate increased after MeJA treatments while the most enhancement was observed at 0.05-mM MeJA. No germination wa...
journal_title：Protoplasma
pub_type： 杂志文章
doi：10.1007/s00709-020-01539-4
更新日期：2020-11-01 00:00:00
abstract：:Iron (Fe) toxicity is one of the major abiotic stresses which limits the yield of lowland rice. This study aims to investigate the physiological, biochemical, and molecular aspects of two contrasting aromatic Joha rice, viz., Keteki and Kola Joha of Assam. Oxidative damage caused due to Fe2+ toxicity was quantitativel...
journal_title：Protoplasma
pub_type： 杂志文章
doi：10.1007/s00709-020-01574-1
更新日期：2020-10-17 00:00:00
abstract：:DNA and machinery for gene expression have been discovered in chloroplasts during the 1960s. It was soon evident that the chloroplast genome is relatively small, that most genes for chloroplast-localized proteins reside in the nucleus and that chloroplast membranes, ribosomes, and protein complexes are composed of pro...
journal_title：Protoplasma
pub_type： 杂志文章
doi：10.1007/s00709-017-1104-1
更新日期：2017-09-01 00:00:00
abstract：:The life of plants growing in cold extreme environments has been well investigated in terms of morphological, anatomical, and ecophysiological adaptations. In contrast, long-term cellular or metabolic studies have been performed by only a few groups. Moreover, a number of single reports exist, which often represent ju...
journal_title：Protoplasma
pub_type： 杂志文章,评审
doi：10.1007/s00709-010-0161-5
更新日期：2010-08-01 00:00:00
abstract：:The inflorescence of Hedychium coccineum Smith is thyrse, and the primary bracts are initiated in a spiral phyllotactic pattern on the sides of the inflorescence dome. Cincinnus primordia are initiated on the flank of the inflorescence apex, in the axils of primary bracts. This primordium subsequently develops a bract...
journal_title：Protoplasma
pub_type： 杂志文章
doi：10.1007/s00709-010-0145-5
更新日期：2010-11-01 00:00:00
abstract：:Salinity is a major stress that adversely affects plant growth and crop production. Understanding the cellular responses and molecular mechanisms by which plants perceive and adopt salinity stress is of fundamental importance. In this work, some of the cellular signaling events including cell death, reactive oxygen sp...
journal_title：Protoplasma
pub_type： 杂志文章
doi：10.1007/s00709-014-0728-7
更新日期：2015-05-01 00:00:00
abstract：:The present study reports the Agrobacterium rhizogenes-mediated hairy root induction in of an ethno-medicinally significant herb-Boerhaavia diffusa L., for elucidating the underlying competence regarding its biosynthetic (i.e. boeravinone B and eupalitin) and bioactivity (antibacterial, antioxidant and anti-inflammato...
journal_title：Protoplasma
pub_type： 杂志文章
doi：10.1007/s00709-015-0875-5
更新日期：2016-07-01 00:00:00
abstract：:Yr36 is an important gene conferring resistance to stripe rust of wheat caused by Puccinia striiformis f. sp. tritici (Pst). To determine if the Yr36 resistance is correlated to reactive oxygen species (ROS) burst and cell death, wheat near-isogenic lines with (UC1041 + Yr36) and without (UC1041) the gene were histolo...
journal_title：Protoplasma
pub_type： 杂志文章
doi：10.1007/s00709-015-0833-2
更新日期：2016-05-01 00:00:00
abstract：:Comparative biochemical characterization of class III peroxidase activity tightly bound to the cell walls of maize roots was performed. Ionically bound proteins were solubilized from isolated walls by salt washing, and the remaining covalently bound peroxidases were released, either by enzymatic digestion or by a nove...
journal_title：Protoplasma
pub_type： 杂志文章
doi：10.1007/s00709-014-0684-2
更新日期：2015-01-01 00:00:00
abstract：:Pollen ontogeny in Pancratium maritimum L. was studied from the sporogenous cell to mature pollen grain stages using transmission electron, scanning electron, and light microscopy to determine whether the pollen development in P. maritimum follows the basic scheme in angiosperms or not. In the course of microsporogene...
journal_title：Protoplasma
pub_type： 杂志文章
doi：10.1007/s00709-016-0998-3
更新日期：2017-03-01 00:00:00
abstract：:Salt-stress-induced alterations in osmotic, ionic, and redox responses were studied in the early period of treatment (30 min to 5 days) in seedlings of Brassica juncea L. Roots and shoots under mild (50 mM) and severe (250 mM) NaCl stress were analyzed for growth, oxidative stress, osmolyte accumulation, antioxidant d...
journal_title：Protoplasma
pub_type： 杂志文章
doi：10.1007/s00709-015-0792-7
更新日期：2016-01-01 00:00:00
abstract：:Determinations of plant or algal cell density (cell mass divided by volume) have rarely accounted for the extracellular matrix or shrinkage during isolation. Three techniques were used to indirectly estimate the density of intact apical cells from protonemata of the moss Ceratodon purpureus. First, the volume fraction...
journal_title：Protoplasma
pub_type： 杂志文章
doi：10.1007/BF01304490
更新日期：2000-01-01 00:00:00
abstract：:Along the past recent years, two-photon excitation (TPE) microscopy has moved from the realms of technical curiosity to be a standard application in many advanced cell biology laboratories. The growing body of literature covered in this review points out the obvious advantages of TPE over any other imaging method base...
journal_title：Protoplasma
pub_type： 杂志文章,评审
doi：10.1007/s00709-003-0026-2
更新日期：2004-03-01 00:00:00
abstract：:Fragile sites (FSs) in plants have been described for species like Lolium and other grasses. Whereas in humans FSs were shown to be involved in genome instabilities; the consequences of FSs expression in plants are not known yet. To evaluate whether FSs cause karyotype instabilities, we assessed the frequency of micro...
journal_title：Protoplasma
pub_type： 杂志文章
doi：10.1007/s00709-016-0942-6
更新日期：2017-01-01 00:00:00
abstract：:The effects of β-amino butyric acid (BABA) on abiotic stress tolerance potential of three Vigna radiata varieties were studied. The reduction in the growth of seedlings subjected to NaCl/polyethylene glycol (PEG) stress is alleviated by BABA seed priming, which also enhanced photosynthetic pigment content and photosyn...
journal_title：Protoplasma
pub_type： 杂志文章
doi：10.1007/s00709-015-0804-7
更新日期：2016-03-01 00:00:00
abstract：:Fluorescence in situ hybridization revealed the presence of ribosomal RNA genes in paracentromeric regions of all A chromosomes and in the distal half of B chromosomes in embryonic cells from Moroccan specimens of the grasshopper Eyprepocnemis plorans. The expression of these genes was monitored by the presence of nuc...
journal_title：Protoplasma
pub_type： 杂志文章
doi：10.1007/BF01283399
更新日期：2001-01-01 00:00:00
abstract：:HLA-B associated transcript 1 (BAT1) protein, also named as spliceosome RNA helicase UAP56, is a member of the DExD/H-box family of helicases. However, regulation under stress, biochemical properties, and functions of plant homologue of BAT1 are poorly understood. Here, we report the purification and detailed biochemi...
journal_title：Protoplasma
pub_type： 杂志文章
doi：10.1007/s00709-015-0791-8
更新日期：2015-11-01 00:00:00
abstract：:Indeterminate growth and the production of new organs in plants require a constant supply of new cells. The majority of these cells are produced in mitotic regions called meristems. For primary or tip growth of the roots and shoots, the meristems are located in the apices. These apical meristems have been shown to fun...
journal_title：Protoplasma
pub_type： 杂志文章,评审
doi：10.1007/s00709-010-0211-z
更新日期：2010-12-01 00:00:00
