Abstract:
:Plant architecture is optimized for the local light environment. In response to foliar shade or neighbor proximity (low red to far-red light), some plant species exhibit shade-avoiding phenotypes, including increased stem and hypocotyl growth, which increases the likelihood of outgrowing competitor plants. If shade persists, early flowering and the reallocation of growth resources to stem elongation ultimately affect the yield of harvestable tissues in crop species. Previous studies have shown that hypocotyl growth in low red to far-red shade is largely dependent on the photoreceptor phytochrome B and the phytohormone auxin. However, where shade is perceived in the plant and how auxin regulates growth spatially are less well understood. Using the oilseed and vegetable crop species Brassica rapa, we show that the perception of low red to far-red shade by the cotyledons triggers hypocotyl cell elongation and auxin target gene expression. Furthermore, we find that following shade perception, elevated auxin levels occur in a basipetal gradient away from the cotyledons and that this is coincident with a gradient of auxin target gene induction. These results show that cotyledon-generated auxin regulates hypocotyl elongation. In addition, we find in mature B. rapa plants that simulated shade does not affect seed oil composition but may affect seed yield. This suggests that in field settings where mutual shading between plants may occur, a balance between plant density and seed yield per plant needs to be achieved for maximum oil yield, while oil composition might remain constant.
journal_name
Plant Physioljournal_title
Plant physiologyauthors
Procko C,Crenshaw CM,Ljung K,Noel JP,Chory Jdoi
10.1104/pp.114.241844subject
Has Abstractpub_date
2014-07-01 00:00:00pages
1285-1301issue
3eissn
0032-0889issn
1532-2548pii
pp.114.241844journal_volume
165pub_type
杂志文章相关文献
PLANT PHYSIOLOGY文献大全abstract::Hydroxamic acids, R-CONHOH, are inhibitors specific to the respiratory pathway through the alternate, cyanide-insensitive terminal oxidase of plant mitochondria. The nature of the R group in these compounds affects the concentration at which the hydroxamic acids are effective, but it appears that all hydroxamic acids ...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.47.1.124
更新日期:1971-01-01 00:00:00
abstract::A variety of red pepper (Capsicum annuum L., cv Yaglik) responds to Fe deficiency stress with simultaneously enhanced H(+) extrusion, reduction of ferric ions and synthesis of malic and citric acid in a swollen subapical root zone densely covered with root hairs. It is demonstrated that these stress responses temporal...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.82.2.511
更新日期:1986-10-01 00:00:00
abstract::Senescence occurs in a programmed manner to dismantle the vegetative tissues and redirect nutrients towards metabolic pathways supporting reproductive success. External factors can trigger the senescence program as an adaptive strategy, indicating that this terminal program is controlled at different levels. It has be...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.19.01154
更新日期:2020-02-01 00:00:00
abstract::Experiments were designed to test whether variation in percent lysine in seed proteins could be recovered in plants regenerated from callus subjected to inhibitory levels of lysine plus threonine. Anther-derived callus was subjected to 1 millimolar lysine plus threonine for three successive passages and then once to t...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.84.2.509
更新日期:1987-06-01 00:00:00
abstract::The chloroplastic and cytosolic forms of spinach (Spinacia oleracea cv Long Standing Bloomsdale) leaf NADH:dihydroxyacetone phosphate (DHAP) reductase were separated and partially purified. The chloroplastic form was stimulated by dithiothreitol, reduced thioredoxin, dihydrolipoic acid, 6-phosphogluconate, and phospha...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.87.2.379
更新日期:1988-06-01 00:00:00
abstract::The effect of 21% O(2) and 3% O(2) on the CO(2) exchange of detached wheat leaves was measured in a closed system with an infrared carbon dioxide analyzer. Temperature was varied between 2 degrees and 43 degrees , CO(2) concentration between 0.000% and 0.050% and light intensity between 40 ft-c and 1000 ft-c. In most ...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.43.6.902
更新日期:1968-06-01 00:00:00
abstract::This study examines the capacity of intact spinach (Spinacia oleracea L.) chloroplasts to fix (14)CO(2) when supplied with Benson-Calvin cycle intermediates in the presence of 3-(3,4-dichlorophenyl)-1,1-dimethylurea (DCMU). Under these conditions, substantial (14)CO(2) fixation occurred in the light but not in the dar...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.72.2.321
更新日期:1983-06-01 00:00:00
abstract::All aerobic biological systems, including N(2)-fixing root nodules, are subject to O(2) toxicity that results from the formation of reactive intermediates such as H(2)O(2) and free radicals of O(2). H(2)O(2) may be removed from root nodules in a series of enzymic reactions involving ascorbate peroxidase, dehydroascorb...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.83.4.789
更新日期:1987-04-01 00:00:00
abstract::Long-term aging of potato (Solanum tuberosum) seed-tubers resulted in a loss of patatin (40 kD) and a cysteine-proteinase inhibitor, potato multicystatin (PMC), as well as an increase in the activities of 84-, 95-, and 125-kD proteinases. Highly active, additional proteinases (75, 90, and 100 kD) appeared in the oldes...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.119.1.89
更新日期:1999-01-01 00:00:00
abstract::Alternative splicing (AS) can add significantly to genome complexity. Plants are thought to exhibit less AS than animals. An algorithm, based on expressed sequence tag (EST) pairs gapped alignment, was developed that takes advantage of the relatively small intron and exon size in plants and directly compares pairs of ...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.107.098640
更新日期:2007-07-01 00:00:00
abstract::Guard cells represent a highly differentiated cell type within the epidermis of plant leaves and stems. They respond to many endogenous and environmental signals and thereby modify the size of the stomatal pore they surround. We identified a novel gene that is highly expressed in guard cells of potato (Solanum tuberos...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.122.3.677
更新日期:2000-03-01 00:00:00
abstract::The allocation and turnover of photosynthetically assimilated (14)CO(2) in lipid and protein fractions of soybean (Glycine max L. Clark) leaves and stem materials was measured. In whole plant labeling experiments, allocation of photosynthate from a pulse of (14)CO(2) into polymeric compounds was: 25% to proteins in 4 ...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.77.2.266
更新日期:1985-02-01 00:00:00
abstract::Auxin-deprived, mannitol-supplemented, suspension-cultured pear (Pyrus communis L. Passe Crassane) fruit cells produce large quantities (20-40 nanoliters ethylene per 10(6) cells per hour) of ethylene in response to auxins, CuCl(2) or 1-amino-cyclopropane-1-carboxylic acid (ACC). Maximum rates of production are achiev...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.73.4.1013
更新日期:1983-12-01 00:00:00
abstract::In characterizing the enzymes involved in the formation of very long-chain fatty acids (VLCFAs) in the Brassicaceae, we have generated a series of mutants of Arabidopsis thaliana that have reduced VLCFA content. Here we report the characterization of a seed lipid mutant, AS11, which, in comparison to wild type (WT), h...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.108.1.399
更新日期:1995-05-01 00:00:00
abstract::Transgenic tobacco plants carrying a fusion between the nopaline synthase (nos) promoter and chloramphenicol acetyltransferase (CAT) reporter gene (cat) were studied for their inducibility by salicylic acid (SA) or methyl jasmonate (MJ) treatments. Either chemical significantly increased CAT activity to a level much h...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.103.1.97
更新日期:1993-09-01 00:00:00
abstract::A starch deficient mutant of Arabidopsis thaliana (L.) Heynh. has been isolated in which leaf extracts contain only about 5% as much activity of ADPglucose pyrophosphorylase (EC 2.7.7.27) as the wild type. A single, nuclear mutation at a previously undescribed locus designated adg2 is responsible for the mutant phenot...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.88.4.1175
更新日期:1988-12-01 00:00:00
abstract::Osmotic adjustment occurred during drought in expanded leaves of sunflowers (Helianthus annuus var Hysun 30) which had been continuously exposed to 660 microliters CO(2) per liter or had been previously acclimated to drought. The effect was greatest when the treatments were combined and was negligible in nonacclimated...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.86.4.1108
更新日期:1988-04-01 00:00:00
abstract::A fructokinase (EC 2.7.1.4) was obtained from pea (Pisum sativum L.) seeds. This enzyme, termed fructokinase (fraction IV), was specific for fructose as substrate and had little activity with glucose or mannose. Excess fructose inhibited the enzyme at the optimum pH (8.2) but not at pH 6.6. MgATP was inhibitory at pH ...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.60.5.666
更新日期:1977-11-01 00:00:00
abstract::Phosphorus (P) is an essential macronutrient, and P deficiency limits plant productivity. Recent work showed that P deficiency affects electron transport to photosystem I (PSI), but the underlying mechanisms are unknown. Here, we present a comprehensive biological model describing how P deficiency disrupts the photosy...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.17.01624
更新日期:2018-05-01 00:00:00
abstract::The assimilation of CO(2) by etiolated Hordeum vulgare seedlings during an illumination period indicates a conversion of the organisms to autotrophy.After 1 hour illumination, increases in the photo-assimilation of CO(2) are observed and the distribution of C(14) in the soluble fraction of the plants is predominantly ...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.41.1.115
更新日期:1966-01-01 00:00:00
abstract::Reactive oxygen species (ROS) are potent signal molecules rapidly generated in response to stress. Detection of pathogen-associated molecular patterns induces a transient apoplastic ROS through the function of the NADPH respiratory burst oxidase homologs D (RbohD). However, little is known about the regulation of path...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.110.154567
更新日期:2010-09-01 00:00:00
abstract::A pulse of red light acting through phytochrome accelerates the formation of chlorophyll upon subsequent transfer of dark-grown seedlings to continuous white light. Specific antibodies were used to follow the accumulation of representative subunits of the major photosynthetic complexes during greening of seedlings of ...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.100.4.1934
更新日期:1992-12-01 00:00:00
abstract::Allene oxide synthase (AOS; hydroperoxide dehydratase; EC 4.2.1.92) catalyzes the first step in the biosynthesis of jasmonic acid from lipoxygenase-derived hydroperoxides of free fatty acids. Using the AOS cDNA from tomato (Lycopersicon esculentum), in which the role of jasmonic acid in wound-induced defense gene acti...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.122.4.1335
更新日期:2000-04-01 00:00:00
abstract::Decomposition of 2-chloroethylphosphonic acid (Ethephon) was studied in dried films at various water vapor pressures (0.6 to 86.9 millimeters Hg, 3.2 to 93.9% relative humidity) and temperatures (20, 30, 40, and 50 C) at pH 6.3 and 7.0. The rate of decomposition could be determined equally well by [(14)C]Ethephon or e...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.63.3.474
更新日期:1979-03-01 00:00:00
abstract::Superoxide dismutases (SODs) are ubiquitous metalloenzymes that catalyze the dismutation of superoxide radicals. Chloroplasts have two isozymes, copper/zinc SOD (Cu/ZnSOD) and iron SOD (FeSOD), encoded by nuclear genes. Because bryophytes are considered as the earliest land plants, they are one of the most interesting...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.107.114868
更新日期:2008-04-01 00:00:00
abstract::High performance liquid chromatography analyses revealed that glutathione (GSH) and cysteine are two of the major low molecular weight thiol compounds in maize root extracts. Treatment of maize roots to heat shock temperatures of 40 degrees C resulted in a decrease of cysteine levels and an increase of GSH levels. Pul...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.82.4.1031
更新日期:1986-12-01 00:00:00
abstract::Biochemical and electrophysiological studies on plant vacuolar transporters became feasible in the late 1970s and early 1980s, when methods to isolate large quantities of intact vacuoles and purified vacuolar membrane vesicles were established. However, with the exception of the H+-ATPase and H+-PPase, which could be ...
journal_title:Plant physiology
pub_type: 杂志文章,评审
doi:10.1104/pp.17.01481
更新日期:2018-02-01 00:00:00
abstract::Allantoin and allantoic acid are the major forms of nitrogen transported from soybean nodules to other parts of the plant. Neither the pathway or the site of ureide synthesis has been demonstrated in root nodules.Bacteroid and cytosol (plant portion) fractions were prepared and the purity of each fraction was determin...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.65.6.1203
更新日期:1980-06-01 00:00:00
abstract::Effects of O(2) and some respiratory inhibitors on the induction and release of bud dormancy were examined with the aerial tubers of different ages of Begonia evansiana Andr. Oxygen was needed not only for tuber sprouting but also during the chilling process at 2 to 5 C to break tuber dormancy. If the mature tubers we...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.51.3.504
更新日期:1973-03-01 00:00:00
abstract::A mechanism that confers increased Al resistance in the Arabidopsis thaliana mutant alr-104 was investigated. A modified vibrating microelectrode system was used to measure H+ fluxes generated along the surface of small Arabidopsis roots. In the absence of Al, no differences in root H+ fluxes between wild type and alr...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.117.1.19
更新日期:1998-05-01 00:00:00