Loss of the transit peptide and an increase in gene expression of an ancestral chloroplastic carbonic anhydrase were instrumental in the evolution of the cytosolic C4 carbonic anhydrase in Flaveria.

abstract：:Extracts of maize (Zea mays L.) plants contain substances which, in vitro, inhibit an indoleacetic acid (IAA) oxidase enzyme from maize. The extracts can be freed of inhibitors by dialysis or by passage through columns of polyvinylpyrrolidone powder. Inhibitor-free extracts contain an IAA oxidase enzyme which requires...

journal_title：Plant physiology

authors： Gelinas D,Postlethwait SN

更新日期：1969-11-01 00:00:00

abstract：:We have examined the expression of acyl carrier protein (ACP) mRNA levels and ACP activity in leaves, where fatty acids function primarily in membrane synthesis, and in developing soybean seeds, where fatty acids are primarily used for oil storage. An RNA probe transcribed from a synthetic spinach ACP-I gene hybridize...

journal_title：Plant physiology

authors： Hannapel DJ,Ohlrogge JB

更新日期：1988-04-01 00:00:00

abstract：:A large proton leak not coupled to ATP synthesis (slip) occurs at alkaline pH through the chloroplast ATP synthase (Y. Evron, M. Avron [1990] Biochim Biophys Acta 1019: 115-120). The involvement of the ATP synthase [gamma]-subunit in the regulation of proton conductance was analyzed by measuring the effect of thiolalk...

journal_title：Plant physiology

authors： Evron Y,Pick U

更新日期：1997-12-01 00:00:00

abstract：:New cells are produced from the meristematic tissues located at the shoot and root tip throughout the life of higher plants. To investigate the genetic mechanism regulating meristematic activity, we isolated and characterized four single-gene, recessive mutants in Arabidopsis thaliana called root meristemless (rml). C...

journal_title：Plant physiology

authors： Cheng JC,Seeley KA,Sung ZR

更新日期：1995-02-01 00:00:00

abstract：:Soybean (Glycine max L. Merr.) is a versatile and important agronomic crop grown worldwide. Each year millions of dollars of potential yield revenues are lost due to a root rot disease caused by the oomycete Phytophthora sojae (Kaufmann & Gerdemann). Since the root is the primary site of infection by this organism, we...

journal_title：Plant physiology

authors： Thomas R,Fang X,Ranathunge K,Anderson TR,Peterson CA,Bernards MA

更新日期：2007-05-01 00:00:00

abstract：:Gibberellins (GAs) are involved in regulation of many aspects during plant development. To investigate the impact of altered GA levels on plant growth and metabolism, transgenic tobacco (Nicotiana tabacum) plants have been engineered to express either a GA20-oxidase (AtGA20-ox) or a GA2-oxidase (AtGA2-ox) gene from Ar...

journal_title：Plant physiology

authors： Biemelt S,Tschiersch H,Sonnewald U

更新日期：2004-05-01 00:00:00

abstract：:The wall-associated kinase (WAK) gene family, one of the receptor-like kinase (RLK) gene families in plants, plays important roles in cell expansion, pathogen resistance, and heavy-metal stress tolerance in Arabidopsis (Arabidopsis thaliana). Through a reiterative database search and manual reannotation, we identified...

journal_title：Plant physiology

authors： Zhang S,Chen C,Li L,Meng L,Singh J,Jiang N,Deng XW,He ZH,Lemaux PG

更新日期：2005-11-01 00:00:00

abstract：:Genotypic variability in vulnerability of leaf xylem to water-stress-induced cavitation was determined in four sugarcane (Saccharum sp.) clones using detached leaf segments in a hydraulic conductivity apparatus. Vulnerability curves were constructed by plotting the percentage of maximum conductivity versus leaf water ...

journal_title：Plant physiology

authors： Neufeld HS,Grantz DA,Meinzer FC,Goldstein G,Crisosto GM,Crisosto C

更新日期：1992-10-01 00:00:00

abstract：:The relationship between gravitropism and surface electrical potentials was studied using etiolated epicotyls of adzuki bean (Phaseolus angularis). Early downward curvature (or transient positive gravitropic response) was observed about 1 min after gravistimulation. The downward curvature was closely related to the sp...

journal_title：Plant physiology

authors： Shigematsu H,Toko K,Matsuno T,Yamafuji K

更新日期：1994-07-01 00:00:00

abstract：:To acquire iron, many plant species reduce soil Fe(III) to Fe(II) by Fe(III)-chelate reductases embedded in the plasma membrane of root epidermal cells. The reduced product is then taken up by Fe(II) transporter proteins. These activities are induced under Fe deficiency. We describe here the FRO1 gene from pea (Pisum ...

journal_title：Plant physiology

authors： Waters BM,Blevins DG,Eide DJ

更新日期：2002-05-01 00:00:00

abstract：:The slow inactivation which accompanies catalysis by higher-plant ribulose-P(2) carboxylase-oxygenase (Rubisco) in vitro was only partially reversed when the enzyme was gel filtered to remove small molecules. However, gel filtration or dialysis in the presence of high SO(2-) (4) concentrations induced full recovery. T...

journal_title：Plant physiology

authors： Edmondson DL,Badger MR,Andrews TJ

更新日期：1990-08-01 00:00:00

abstract：:4-Hydroxyphenylpyruvate dioxygenase (EC 1.13.11.27) was partially purified from barnyardgrass (Echinochloa crus-galli L.) leaves and assayed by high-performance liquid chromatography analysis of product formation or by the capture of released 14CO2. The bleaching herbicide sulcotrione [2-(2-chloro-4-methanesulfonylben...

journal_title：Plant physiology

authors： Secor J

更新日期：1994-12-01 00:00:00

abstract：:Electrophysiological studies in roots of pea (Pisum sativum L.) and rigid ryegrass (Lolium rigidum Gaud.) seedlings were conducted to elucidate the mechanism involved in the membrane response to the herbicide diclofop. In pea, a dicotyledonous plant insensitive to diclofop, membrane depolarization at varying pH values...

journal_title：Plant physiology

authors： DiTomaso JM

更新日期：1993-08-01 00:00:00

abstract：:Endogenous abscisic acid (ABA) levels are regulated by both biosynthesis and catabolism of the hormone. ABA 8'-hydroxylase is considered to be the key catabolic enzyme in many physiological processes. We have previously identified that four members of the Arabidopsis (Arabidopsis thaliana) CYP707A gene family (CYP707A...

journal_title：Plant physiology

authors： Okamoto M,Kuwahara A,Seo M,Kushiro T,Asami T,Hirai N,Kamiya Y,Koshiba T,Nambara E

更新日期：2006-05-01 00:00:00

abstract：:Opaque or nonvitreous phenotypes relate to the seed architecture of maize (Zea mays) and are linked to loci that control the accumulation and proper deposition of storage proteins, called zeins, into specialized organelles in the endosperm, called protein bodies. However, in the absence of null mutants of each type of...

journal_title：Plant physiology

authors： Wu Y,Messing J

更新日期：2010-05-01 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

authors： Ketchner SL,Sayre RT

更新日期：1992-03-01 00:00:00

abstract：:Treatment of tobacco (Nicotiana tabacum) cell-suspension cultures with cryptogein, an elicitin protein from Phytophthora cryptogea, resulted in the release of a factor(s) that diffused through a 1000-D cutoff dialysis membrane and was capable of inducing sesquiterpene cyclase enzyme activity (a key phytoalexin biosynt...

journal_title：Plant physiology

authors： Chappell J,Levine A,Tenhaken R,Lusso M,Lamb C

更新日期：1997-02-01 00:00:00

abstract：:Leaves of woad (Isatis tinctoria L.) were found to incorporate efficiently tritiated indoleacetaldoxime and (35)S from (35)S-l-cystine into glucobrassicin and sulfoglucobrassicin. Time course of incorporation of (35)S from (35)S-cystine into the glucosinolates indicated that glucobrassicin was formed first and then su...

journal_title：Plant physiology

authors： Mahadevan S,Stowe BB

更新日期：1972-07-01 00:00:00

abstract：:Stem sections from poplar that were stably transformed with a eucalypt cinnamyl alcohol dehydrogenase promoter-[beta]-glucuronidase construct were prepared by using either a technique routinely used in herbaceous species or a technique designed to take into account the particular anatomy of woody plants. Although both...

journal_title：Plant physiology

authors： Hawkins S,Samaj J,Lauvergeat V,Boudet A,Grima-Pettenati J

更新日期：1997-02-01 00:00:00

abstract：:ORNITHINE: 2-oxoacid aminotransferase (EC 2.6.1.13) has been purified over 400-fold with a total recovery of 14% from acetone powders of cotyledons of germinating squash (Cucurbita pepo, L.) seedlings. The pH optimum of the transamination between l-ornithine and alpha-ketoglutarate is 8 and the Michaelis constants are...

journal_title：Plant physiology

authors： Lu TS,Mazelis M

更新日期：1975-03-01 00:00:00

abstract：:The assay of acetyl-CoA carboxylase (EC 6.4.1.2) does not follow ideal zero-order kinetics when assayed in a crude extract from wheat (Triticum aestivum L.) germ. Our results show that the lack of ideality is the consequence of contamination by ATPase and adenylate kinase. These enzyme activities generate significant ...

journal_title：Plant physiology

authors： Eastwell KC,Stumpf PK

更新日期：1983-05-01 00:00:00

abstract：:Kinetic characteristics of phosphoenolpyruvate carboxylase (PEPC) from the epiphytic C(3) or C(4): CAM intermediate plant, Peperomia camptotricha, were investigated. Few day versus night differences in V(max),K(m(PEP))), or malate inhibition were observed, even in extracts from water-stressed plants which characterist...

journal_title：Plant physiology

authors： Sipes DL,Ting IP

更新日期：1989-11-01 00:00:00

abstract：:Polyamines are small ubiquitous molecules that have been involved in nearly all developmental processes, including the stress response. Nevertheless, no direct evidence of a role of polyamines in the wound response has been described. We have studied the expression of genes involved in polyamine biosynthesis in respon...

journal_title：Plant physiology

authors： Perez-Amador MA,Leon J,Green PJ,Carbonell J

更新日期：2002-11-01 00:00:00

abstract：:Although researchers have established that DNA methylation and active demethylation are dynamically regulated in plant cells, the molecular mechanism for the regulation of active DNA demethylation is not well understood. By using an Arabidopsis (Arabidopsis thaliana) line expressing the Promoter RESPONSIVE TO DEHYDRAT...

journal_title：Plant physiology

authors： Wang C,Dong X,Jin D,Zhao Y,Xie S,Li X,He X,Lang Z,Lai J,Zhu JK,Gong Z

更新日期：2015-03-01 00:00:00

abstract：:Here, we present a genome-wide overview of transcriptional circuits in the agriculturally significant crop species maize (Zea mays). We examined transcript abundance data at 50 developmental stages, from embryogenesis to senescence, for 34,876 gene models and classified genes into 24 robust coexpression modules. Modul...

journal_title：Plant physiology

authors： Downs GS,Bi YM,Colasanti J,Wu W,Chen X,Zhu T,Rothstein SJ,Lukens LN

更新日期：2013-04-01 00:00:00

abstract：:Biosynthesis of ent-kaurene was investigated in extracts of cell suspension cultures and seedlings of castor bean. Both cell-free extracts contain an inhibitor of kaurene synthetase. The inhibition affects mainly the cyclization of geranylgeranyl pyrophosphate to copalyl pyrophosphate (activity A) and has little or no...

journal_title：Plant physiology

authors： Gafni Y,Shechter I

更新日期：1981-06-01 00:00:00

abstract：:Most molecular-genetic studies of plant defense responses to arthropod herbivores have focused on insects. However, plant-feeding mites are also pests of diverse plants, and mites induce different patterns of damage to plant tissues than do well-studied insects (e.g. lepidopteran larvae or aphids). The two-spotted spi...

journal_title：Plant physiology

authors： Zhurov V,Navarro M,Bruinsma KA,Arbona V,Santamaria ME,Cazaux M,Wybouw N,Osborne EJ,Ens C,Rioja C,Vermeirssen V,Rubio-Somoza I,Krishna P,Diaz I,Schmid M,Gómez-Cadenas A,Van de Peer Y,Grbic M,Clark RM,Van Leeuwen T,

更新日期：2014-01-01 00:00:00

abstract：:The light-harvesting antenna of higher plant photosystem II (LHCII) has the intrinsic capacity to dissipate excess light energy as heat in a process termed nonphotochemical quenching (NPQ). Recent studies suggest that zeaxanthin and lutein both contribute to the rapidly relaxing component of NPQ, qE, possibly acting i...

journal_title：Plant physiology

authors： Johnson MP,Pérez-Bueno ML,Zia A,Horton P,Ruban AV

更新日期：2009-02-01 00:00:00

abstract：:Plant endosperm cells have a nuclear ratio of two maternal genomes to one paternal genome. This 2 to 1 dosage relationship provides a unique system for studying the additivity of gene expression levels in reciprocal hybrids. A combination of microarray profiling and allele-specific expression analysis was performed us...

journal_title：Plant physiology

authors： Stupar RM,Hermanson PJ,Springer NM

更新日期：2007-10-01 00:00:00

abstract：:Blue light is known to induce suppression of stem elongation. To avoid the complication of blue-light-induced transformation of phytochrome we have adapted the procedure of measuring blue-light-induced suppression of stem elongation in Pisum sativum L. var Alaska grown under continuous red light. The resulting fluence...

journal_title：Plant physiology

authors： Warpeha KM,Kaufman LS

更新日期：1989-02-01 00:00:00