Abstract：
:A primary plant cell wall network was computationally modeled using the finite element approach to study the hypothesis of hemicellulose (HC) tethering with the cellulose microfibrils (CMFs) as one of the major load-bearing mechanisms of the growing cell wall. A computational primary cell wall network fragment (10 × 10 μm) comprising typical compositions and properties of CMFs and HC was modeled with well-aligned CMFs. The tethering of HC to CMFs is modeled in accordance with the strength of the hydrogen bonding by implementing a specific load-bearing connection (i.e. the joint element). The introduction of the CMF-HC interaction to the computational cell wall network model is a key to the quantitative examination of the mechanical consequences of cell wall structure models, including the tethering HC model. When the cell wall network models with and without joint elements were compared, the hydrogen bond exhibited a significant contribution to the overall stiffness of the cell wall network fragment. When the cell wall network model was stretched 1% in the transverse direction, the tethering of CMF-HC via hydrogen bonds was not strong enough to maintain its integrity. When the cell wall network model was stretched 1% in the longitudinal direction, the tethering provided comparable strength to maintain its integrity. This substantial anisotropy suggests that the HC tethering with hydrogen bonds alone does not manifest sufficient energy to maintain the integrity of the cell wall during its growth (i.e. other mechanisms are present to ensure the cell wall shape).
journal_name
Plant Physioljournal_title
Plant physiologyauthors
Yi H,Puri VMdoi
10.1104/pp.112.201228subject
Has Abstractpub_date
2012-11-01 00:00:00pages
1281-92issue
3eissn
0032-0889issn
1532-2548pii
pp.112.201228journal_volume
160pub_type
杂志文章相关文献
PLANT PHYSIOLOGY文献大全abstract：:Experiments were designed to test the hypothesis that the labeled products recovered from plant tissue incubated with [(14)C]GA(12)-7-aldehyde ([(14)C]GA(12)ald) would serve as appropriate [(14)C]markers for the recovery of naturally-occurring gibberellins (GAs). The [(14)C]GA(12)ald (about 200 millicuries per millimo...
journal_title：Plant physiology
pub_type： 杂志文章
doi：10.1104/pp.81.4.984
更新日期：1986-08-01 00:00:00
abstract：:Fatty acid desaturases regulate the unsaturation status of cellular lipids. They comprise two distinct evolutionary lineages, a soluble class found in the plastids of higher plants and an integral membrane class found in plants, yeast (Saccharomyces cerevisiae), animals, and bacteria. Both classes exhibit a dimeric qu...
journal_title：Plant physiology
pub_type： 杂志文章
doi：10.1104/pp.15.00622
更新日期：2015-09-01 00:00:00
abstract：:Gibberellic acid (GA) enhances the synthesis of alpha-amylase and ribonuclease in isolated aleurone layers and this process is inhibited by abscisin. Removal of gibberellic acid in mid-course of alpha-amylase production results in a slowing down of alpha-amylase synthesis, suggesting a continued requirement of GA for ...
journal_title：Plant physiology
pub_type： 杂志文章
doi：10.1104/pp.42.7.1008
更新日期：1967-07-01 00:00:00
abstract：:Measurements were made of (45)Ca influx into isolated internodal cells of Chara corallina and also into internodal cells of intact plants. (45)Ca influx was closely related to growth. In rapidly expanding internodal cells, the influx was approximately 1.4 nmol m(-2) s(-1) compared to the influx in mature cells from sl...
journal_title：Plant physiology
pub_type： 杂志文章
doi：10.1104/pp.100.2.637
更新日期：1992-10-01 00:00:00
abstract：:In Chlamydomonas reinhardtii, a light-induced oxidative stress shifts the glutathione pool toward its oxidized form, resulting in a translational arrest of the large subunit (LSU) of Rubisco. We show here that the translational arrest of LSU is tightly coordinated with cessation of Rubisco assembly, and both processes...
journal_title：Plant physiology
pub_type： 杂志文章
doi：10.1104/pp.104.056341
更新日期：2005-02-01 00:00:00
abstract：:Ion and oxygen uptake were studied on aging bean stem slices. Oxygen uptake was high immediately after slicing, decreased to a minimum at 100 minutes, and then increased again. Ion uptake per unit of O(2) uptake data suggested that metabolic energy was utilized almost exclusively for sodium transport in fresh tissue b...
journal_title：Plant physiology
pub_type： 杂志文章
doi：10.1104/pp.47.5.663
更新日期：1971-05-01 00:00:00
abstract：:Phytochrome that has been photoinduced to pellet by irradiation of intact oat (cv. Garry) shoots and recovered from a pellet obtained by centrifugation of crude extracts exhibits modified behavior when compared to soluble phytochrome isolated from shoots that had never been irradiated. This modified behavior includes ...
journal_title：Plant physiology
pub_type： 杂志文章
doi：10.1104/pp.68.4.789
更新日期：1981-10-01 00:00:00
abstract：:Red pines (Pinus resinosa Ait.) were grown in a pasteurized sandy loam either unamended with phosphate or fertilized with one of two levels of phosphate (34 or 136 mg/kg) as superphosphate, and with and without addition of Hebeloma arenosa inoculum. Shoot and total dry weights of mycorrhizal seedlings grown in soil un...
journal_title：Plant physiology
pub_type： 杂志文章
doi：10.1104/pp.100.2.713
更新日期：1992-10-01 00:00:00
abstract：:Bicarbonate-(14)C was provided to 5- and 11-day-old suspension cultures of Paul's Scarlet rose, and the incorporation of (14)C into lipid, protein, amino acids, and organic acids was determined. The rate of bicarbonate uptake was approximately the same by 5- and 11-day-old cells, but the distribution of (14)C among ce...
journal_title：Plant physiology
pub_type： 杂志文章
doi：10.1104/pp.55.4.643
更新日期：1975-04-01 00:00:00
abstract：:Development of the primary and early nodal roots was studied in Zea mays L., Zea mexicana (Schrad.) Reeves & Mangelsd., Sorghum bicolor (L.) Moench., and Sorghum sudanese (Piper) Stapf. in relation to shoot development. In all the types studied all roots reached lengths of about 30 centimeters before the late metaxyle...
journal_title：Plant physiology
pub_type： 杂志文章
doi：10.1104/pp.89.4.1094
更新日期：1989-04-01 00:00:00
abstract：:Plastocyanin and chloroplast coupling factor 1 (CF(1)) are released from spinach (Spinacia oleracea L.) thylakoids during a slow freezethaw cycle. CF(1) addition increases the proton uptake of thylakoids previously frozen in sucrose concentrations of 15 mm to 100 mm. Addition of CF(1) and plastocyanin restores the pro...
journal_title：Plant physiology
pub_type： 杂志文章
doi：10.1104/pp.57.5.673
更新日期：1976-05-01 00:00:00
abstract：:Changes in lipid composition were followed as a proplastid develops into a chloroplast. Methods were devised for the isolation of developing proplastids from sections of five different ages from the same 7-day-old maize (Zea mays var. Kelvedon Glory) leaf. Electron micrographs illustrate the homogeneity of the five ty...
journal_title：Plant physiology
pub_type： 杂志文章
doi：10.1104/pp.57.5.789
更新日期：1976-05-01 00:00:00
abstract：:A synthetic green fluorescent protein (GFP) gene (pgfp) was constructed to improve GFP expression in plants. Corn and tobacco protoplast transient assays showed that pgfp gave about 20-fold brighter fluorescence than the wild-type gene (gfp). Replacement of the serine at position 65 with a threonine (S65Tpgfp) or a cy...
journal_title：Plant physiology
pub_type： 杂志文章
doi：10.1104/pp.112.3.893
更新日期：1996-11-01 00:00:00
abstract：:The canonical pathway for isoleucine biosynthesis in plants begins with the conversion of threonine to 2-ketobutyrate by threonine deaminase (OMR1). However, demonstration of methionine gamma-lyase (MGL) activity in Arabidopsis (Arabidopsis thaliana) suggested that production of 2-ketobutyrate from methionine can also...
journal_title：Plant physiology
pub_type： 杂志文章
doi：10.1104/pp.109.138651
更新日期：2009-09-01 00:00:00
abstract：:We have determined the levels of photosystem II activity and polypeptide abundance in whole leaves and isolated bundle sheath and mesophyll cells of C(4), "C(4)-like," and C(3) species of the genus Flaveria (Asteraceae). On a chlorophyll basis, the whole leaf levels of the D1, D2, and 34-kilodalton photosystem II poly...
journal_title：Plant physiology
pub_type： 杂志文章
doi：10.1104/pp.98.3.1154
更新日期：1992-03-01 00:00:00
abstract：:The enzyme polyphenol oxidase (PPO) catalyzes the oxidation of phenolic compounds into highly reactive quinones. Polymerization of PPO-derived quinones causes the postharvest browning of cut or bruised fruit, but the native physiological functions of PPOs in undamaged, intact plant cells are not well understood. Walnu...
journal_title：Plant physiology
pub_type： 杂志文章
doi：10.1104/pp.113.228593
更新日期：2014-03-01 00:00:00
abstract：:Laminarin, a linear beta-1,3 glucan (mean degree of polymerization of 33) was extracted and purified from the brown alga Laminaria digitata. Its elicitor activity on tobacco (Nicotiana tabacum) was compared to that of oligogalacturonides with a mean degree of polymerization of 10. The two oligosaccharides were perceiv...
journal_title：Plant physiology
pub_type： 杂志文章
doi：10.1104/pp.124.3.1027
更新日期：2000-11-01 00:00:00
abstract：:Metatranscriptomic study of nonmodel organisms requires strategies that retain the highly resolved genetic information generated from model organisms while allowing for identification of the unexpected. A real-world biological application of phytoremediation, the field growth of 10 Salix cultivars on polluted soils, w...
journal_title：Plant physiology
pub_type： 杂志文章
doi：10.1104/pp.16.00090
更新日期：2016-05-01 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
abstract：:The microsomal fraction of avocado (Persea americana) mesocarp is a rich source of cytochrome P-450 active in the demethylation of xenobiotics. Cytochrome P-450 from this tissue has been purified and well characterized at the molecular level (DP O'Keefe, KJ Leto [1989] Plant Physiol 89: 1141-1149; KR Bozak, H Yu, R Si...
journal_title：Plant physiology
pub_type： 杂志文章
doi：10.1104/pp.98.4.1290
更新日期：1992-04-01 00:00:00
abstract：:Rhizobium promoters involved in the formation of root nodules on leguminous plants are activated by flavonoids in plant root exudate. A series of Rhizobium strains which all contain the inducible Rhizobium leguminosarum nodA promoter fused to the Escherichia coli lacZ gene, and which differ only in the source of the r...
journal_title：Plant physiology
pub_type： 杂志文章
doi：10.1104/pp.86.4.1298
更新日期：1988-04-01 00:00:00
abstract：:Rice grains (Oryza sativa L.) from three varieties and three pairs of lines with different protein content were collected at 4-day intervals from 4 to 32 days after flowering. The samples were analyzed for protein, free amino nitrogen, ribonucleic acid, protease activity, and ribonuclease activity. In addition, the ca...
journal_title：Plant physiology
pub_type： 杂志文章
doi：10.1104/pp.46.5.743
更新日期：1970-11-01 00:00:00
abstract：:We investigated the function of cell wall hydroxyproline-rich glycoproteins by observing the effects of a selective inhibitor of prolyl hydroxylase, 3,4-dehydro-L-proline (Dhp), on wall regeneration by Nicotiana tabacum mesophyll cell protoplasts. Protoplasts treated with micromolar concentrations of Dhp do not develo...
journal_title：Plant physiology
pub_type： 杂志文章
doi：10.1104/pp.104.2.747
更新日期：1994-02-01 00:00:00
abstract：:The plant-specific translation initiation complex eIFiso4F is encoded by three genes in Arabidopsis (Arabidopsis thaliana)-genes encoding the cap binding protein eIFiso4E (eifiso4e) and two isoforms of the large subunit scaffolding protein eIFiso4G (i4g1 and i4g2). To quantitate phenotypic changes, a phenomics platfor...
journal_title：Plant physiology
pub_type： 杂志文章
doi：10.1104/pp.19.00557
更新日期：2019-09-01 00:00:00
abstract：:A specific antiserum, raised against purified phenylalanine ammonialyase from irradiated cell suspension cultures of parsley (Petroselinum hortense Hoffm.), was used to compare the enzyme species induced either by dilution or by irradiation of the cell suspensions, to investigate the effect of dilution on the rate of ...
journal_title：Plant physiology
pub_type： 杂志文章
doi：10.1104/pp.60.3.440
更新日期：1977-09-01 00:00:00
abstract：:We examined the response of leaves of 3-week-old maize (Zea mays L.) to short-term (5 h) fumigation with O3-enriched air (0, 0.12, 0.24, or 0.36 [mu]L/L). Older leaves and leaf tissue developed more severe visible damage at higher external O3 concentrations. To investigate the immediate effect of O3 exposure on the ac...
journal_title：Plant physiology
pub_type： 杂志文章
doi：10.1104/pp.108.2.777
更新日期：1995-06-01 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：:Chloroplast biogenesis has been well documented in higher plants, yet the complex methods used to regulate chloroplast activity under fluctuating environmental conditions are not well understood. In rice (Oryza sativa), the CYTOKININ-RESPONSIVE GATA TRANSCRIPTION FACTOR1 (Cga1) shows increased expression following lig...
journal_title：Plant physiology
pub_type： 杂志文章
doi：10.1104/pp.113.217265
更新日期：2013-05-01 00:00:00
abstract：:Previous work has shown that tobacco (Nicotiana tabacum) plants engineered to express spinach choline monooxygenase in the chloroplast accumulate very little glycine betaine (GlyBet) unless supplied with choline (Cho). We therefore used metabolic modeling in conjunction with [(14)C]Cho labeling experiments and in vivo...
journal_title：Plant physiology
pub_type： 杂志文章
doi：10.1104/pp.124.1.153
更新日期：2000-09-01 00:00:00
abstract：:Steady state rates of NADP reduction decline upon commencement of nitrite reduction in reconstituted chloroplast preparations. Similarly, steady state rates of nitrite reduction are lower, but not zero, during concurrent NADP reduction. These results imply that competition for substrate occurs and suggest that nitrite...
journal_title：Plant physiology
pub_type： 杂志文章
doi：10.1104/pp.77.2.318
更新日期：1985-02-01 00:00:00
