Abstract:
:During the last century, two key hypotheses have been proposed to explain apical dominance in plants: auxin promotes the production of a second messenger that moves up into buds to repress their outgrowth, and auxin saturation in the stem inhibits auxin transport from buds, thereby inhibiting bud outgrowth. The recent discovery of strigolactone as the novel shoot-branching inhibitor allowed us to test its mode of action in relation to these hypotheses. We found that exogenously applied strigolactone inhibited bud outgrowth in pea (Pisum sativum) even when auxin was depleted after decapitation. We also found that strigolactone application reduced branching in Arabidopsis (Arabidopsis thaliana) auxin response mutants, suggesting that auxin may act through strigolactones to facilitate apical dominance. Moreover, strigolactone application to tiny buds of mutant or decapitated pea plants rapidly stopped outgrowth, in contrast to applying N-1-naphthylphthalamic acid (NPA), an auxin transport inhibitor, which significantly slowed growth only after several days. Whereas strigolactone or NPA applied to growing buds reduced bud length, only NPA blocked auxin transport in the bud. Wild-type and strigolactone biosynthesis mutant pea and Arabidopsis shoots were capable of instantly transporting additional amounts of auxin in excess of endogenous levels, contrary to predictions of auxin transport models. These data suggest that strigolactone does not act primarily by affecting auxin transport from buds. Rather, the primary repressor of bud outgrowth appears to be the auxin-dependent production of strigolactones.
journal_name
Plant Physioljournal_title
Plant physiologyauthors
Brewer PB,Dun EA,Ferguson BJ,Rameau C,Beveridge CAdoi
10.1104/pp.108.134783subject
Has Abstractpub_date
2009-05-01 00:00:00pages
482-93issue
1eissn
0032-0889issn
1532-2548pii
pp.108.134783journal_volume
150pub_type
杂志文章相关文献
PLANT PHYSIOLOGY文献大全abstract::Analysis of a mutation in cotton (Gossypium hirsutum), which is maternally inherited, revealed that the completely white sectors of leaves were deficient in the 70S class ribosomes, whereas the yellow sectors exhibited the same level of the latter as in the green leaves. ...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.51.6.1138
更新日期:1973-06-01 00:00:00
abstract::The chloroplast-associated form of superoxide dismutase from maize (Zea mays L.) (SOD-1) has been purified by a stepwise procedure consisting of (NH(4))(2)SO(4) fractionation, G-100 Sephadex gel filtration, DEAE-Sephacel chromatography, and hydroxylapatite chromatography. This procedure resulted in a single band on so...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.73.1.31
更新日期:1983-09-01 00:00:00
abstract::The cytosolic pools of glucose-1-phosphate (Glc-1-P) and glucose-6-phosphate are essential intermediates in several biosynthetic paths, including the formation of sucrose and cell wall constituents, and they are also linked to the cytosolic starch-related heteroglycans. In this work, structural features and biochemica...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.108.127969
更新日期:2008-11-01 00:00:00
abstract::This study presents evidence for a new enzyme, d-ribose-5-P reductase, which catalyzes the reaction: d-ribose-5-P + NADPH + H(+) --> d-ribitol-5-P + NADP(+). The enzyme was isolated from Adonis vernalis L. leaves in 38% yield and was purified 71-fold. The reductase was NADPH specific and had a pH optimum in the range ...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.78.4.758
更新日期:1985-08-01 00:00:00
abstract::Isoflavonoids are distributed predominantly in leguminous plants and play critical roles in plant physiology. A cytochrome P450 (P450), 2-hydroxyisoflavanone synthase, is the key enzyme in their biosynthesis. In cultured licorice (Glycyrrhiza echinata L., Fabaceae) cells, the production of both an isoflavonoid-derived...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.121.3.821
更新日期:1999-11-01 00:00:00
abstract::Salinity is an environmental stress that causes decline in crop yield. Avicennia officinalis and other mangroves have adaptations such as ultrafiltration at the roots aided by apoplastic cell wall barriers to thrive in saline conditions. We studied a cytochrome P450 gene from A. officinalis, AoCYP94B1, and its putativ...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.20.01054
更新日期:2020-12-01 00:00:00
abstract::The cultivated tomato (Lycopersicon esculentum) has a unipinnate compound leaf. In the developing leaf primordium, major leaflet initiation is basipetal, and lobe formation and early vascular differentiation are acropetal. We show that engineered alterations in the expression of a tomato homeobox gene, LeT6, can cause...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.117.3.771
更新日期:1998-07-01 00:00:00
abstract::Histone acetylation is an important posttranslational modification correlated with gene activation. In Arabidopsis (Arabidopsis thaliana), the histone acetyltransferase AtHAC1 is homologous to animal p300/CREB (cAMP-responsive element-binding protein)-binding proteins, which are the main histone acetyltransferases par...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.106.095521
更新日期:2007-04-01 00:00:00
abstract::In flowering plant reproduction, pollen tube reception is the signaling system that results in pollen tube discharge, synergid degeneration, and successful delivery of male gametes (two sperm cells) to the site where they can fuse with female gametes (egg cell and central cell). Some molecules required for this comple...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.15.00528
更新日期:2015-09-01 00:00:00
abstract::Glutathione reductase (EC 1.6.4.2) activity is present in spinach (Spinacia oleracea L.) chloroplasts. The pH dependence and substrate concentration for half-maximal rate are reported and a possible role in chloroplasts is proposed. ...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.59.5.1011
更新日期:1977-05-01 00:00:00
abstract::The turnover of dhurrin in green seedlings of Sorghum bicolor (Linn) Moench var Redland x Greenleaf, Sudan 70 has been investigated using glyphosate and pulse-labeling studies with (14)C-tyrosine and [(14)C]shikimic acid. The rate of dhurrin breakdown was 4.8 nanomoles per hour in the shoot and 1.4 nanomoles per hour ...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.94.3.1219
更新日期:1990-11-01 00:00:00
abstract::We identified a recessive, brassinolide-insensitive mutant caused by a deletion allele (bri1-201) of the brassinosteroid (BR) receptor BRI1. The bri1-201 mutant displayed altered expression levels of genes differentially regulated by gibberellin (GA). RNA-blot analysis revealed that BR and GA antagonistically regulate...
journal_title:Plant physiology
pub_type: 杂志文章
doi:
更新日期:2001-10-01 00:00:00
abstract::The essentiality of roots to the short-term responses of leaf elongation to salinity was tested by removing the roots of maize (Zea mays L.) from the shoots and comparing the initial short-term response of leaf elongation to that with intact plants. Eightday-old seedlings growing in solution culture were treated with ...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.95.3.965
更新日期:1991-03-01 00:00:00
abstract::The incorporation of [(14)C]phenylalanine and [1,6-(14)C]shikimic acid into tyrosine was investigated in the callus of Portulaca grandiflora, var. JR (L.). By inhibiting phenylalanine with 1-alpha-aminooxy-beta-phenyl-propionic acid and tyrosinase with 1-cysteine-HCl and hydrazine-hydrate, the possible synthesis of ty...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.68.2.272
更新日期:1981-08-01 00:00:00
abstract::Iron (Fe) is an essential mineral nutrient and an important factor for the composition of natural plant communities. Low Fe availability in aerated soils with neutral or alkaline pH has led to the evolution of elaborate mechanisms that extract Fe from the soil solution. In Arabidopsis (Arabidopsis thaliana), Fe is acq...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.18.00178
更新日期:2018-05-01 00:00:00
abstract::Arcelin, a seed protein originally discovered in wild bean accessions, was purified, characterized, and compared to phaseolin, the major seed protein of common bean, and to phytohemagglutinin (PHA), the major bean seed lectin. Arcelin and PHA has several characteristics in common. Both were glycoproteins having simila...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.86.2.399
更新日期:1988-02-01 00:00:00
abstract::Three novel beta-xylan xylanohydrolases capable of dissociating ferulated arabinoxylan (Feraxan) from maize (Zea mays L. hybrid B73 x Mo17) coleoptile sections and two conventional beta-xylan xylanohydrolases (xylanases) were purified from a Bacillus subtilis industrial enzyme preparation (Novo Ban L-120). The Feraxan...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.87.4.883
更新日期:1988-08-01 00:00:00
abstract::The breakdown of sucrose to feed both hexoses into glycolytic carbon flow can occur by the sucrose synthase pathway. This uridine diphosphate (UDP) and pyrophosphate (PPi)-dependent pathway was biochemically characterized using soluble extracts from several plants. The sucrolysis process required the simultaneous pres...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.90.2.635
更新日期:1989-06-01 00:00:00
abstract::Experiments were conducted with segments of corn roots to investigate whether nitrate reductase (NR) is compartmentalized in particular groups of cells that collectively form the root symplastic pathway. A microsurgical technique was used to separate cells of the epidermis, of the cortex, and of the stele. The presenc...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.82.3.675
更新日期:1986-11-01 00:00:00
abstract::Parsley (Petroselinum crispum) cell cultures respond rapidly to treatment with fungal elicitor by the accumulation of coumarin phytoalexins in the culture fluid and by incorporation of ferulic esters into their cell walls. S-Adenosyl-l-methionine:trans-caffeoyl-CoA 3-O-methyltransferase activity, specifically involved...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.95.1.137
更新日期:1991-01-01 00:00:00
abstract::Glyceollin isomers I, II, and III are the major pathogen-elicited secondary metabolites (i.e. phytoalexins) of soybean (Glycine max) that, collectively with other 5-deoxyisoflavonoids, provide race-specific resistance to Phytophthora sojae. The NAC-family transcription factor (TF) GmNAC42-1 is an essential regulator o...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.19.01293
更新日期:2020-06-01 00:00:00
abstract::Several angiosperm plant genomes, including Arabidopsis (Arabidopsis thaliana), rice (Oryza sativa), poplar (Populus trichocarpa), and grapevine (Vitis vinifera), have been sequenced, but the lack of reference genomes in gymnosperm phyla reduces our understanding of plant evolution and restricts the potential impacts ...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.111.179663
更新日期:2011-09-01 00:00:00
abstract::A method was developed where soybean seedlings were grown without roots to study the influence of hormones of root origin on shoot growth. Excision of the root resulted in inhibition of apical section growth and DNA synthesis and inhibited elongating section growth. A synthetic cytokinin restored DNA synthesis in the ...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.44.9.1295
更新日期:1969-09-01 00:00:00
abstract::Eukaryotic Δ6-desaturases are microsomal enzymes that balance the synthesis of ω-3 and ω-6 C18-polyunsaturated fatty acids (C18-PUFAs) according to their specificity. In several microalgae, including Ostreococcus tauri, plastidic C18-PUFAs are strictly regulated by environmental cues suggesting an autonomous control o...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.20.00281
更新日期:2020-09-01 00:00:00
abstract::Cultures of Lemna gibba L. G3 were maintained at a constant, N-limited growth rate by adding nitrate daily in amounts calculated to sustain a rate of culture N increment of 0.20 day(-1). Nitrate added to the culture was consumed within 8 to 10 hours and the partitioning to reduction and accumulation during this phase ...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.85.3.856
更新日期:1987-11-01 00:00:00
abstract::Etiolated pea (Pisum sativum cv Alaska) seedlings growing against a horizontal barrier in the soil will assume a horizontal orientation and continue to grow for prolonged periods of time. With removal of the barrier or after seedlings grow out from underneath the obstruction, seedlings immediately return to normal ver...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.98.2.769
更新日期:1992-02-01 00:00:00
abstract::Purified potato tuber (Solanum tuberosum L. cv Bintie) mitochondria contain soluble, highly latent NAD(+)- and NADP(+)-isocitrate dehydrogenases, NAD(+)- and NADP(+)-malate dehydrogenases, as well as an NADPH-specific glutathione reductase (160, 25, 7200, 160, and 16 nanomoles NAD(P)H per minute and milligram protein,...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.94.3.1012
更新日期:1990-11-01 00:00:00
abstract::Fusicoccin inhibits the germination of pea (Pisum sativum L. cv Progress 9) seeds by decreasing the growth of the embryonal axis and by stimulating the fresh weight increase of the cotyledons. The growth of isolated embryonal axes in the presence of sucrose and KCl is stimulated by fusicoccin. The effect of fusicoccin...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.76.3.819
更新日期:1984-11-01 00:00:00
abstract::Under stress conditions such as high light intensity or nutrient starvation, cells of the unicellular alga Dunaliella bardawil overproduce beta-carotene, which is accumulated in the plastids in newly formed triacylglycerol droplets. We report here that the formation of these sequestering structures and beta-carotene a...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.116.4.1239
更新日期:1998-04-01 00:00:00
abstract::An oligomycin concentration that specifically inhibits oxidative phosphorylation was added to isolated barley (Hordeum vulgare L.) leaf protoplasts at various irradiances and carbon dioxide concentrations. At saturating as well as low light intensities, photosynthetic oxygen evolution was decreased as a result of the ...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.102.3.947
更新日期:1993-07-01 00:00:00