Leaf-atmosphere NH(3) exchange of white clover (Trifolium repens L.) in relation to mineral N nutrition and symbiotic N(2) fixation.

abstract：:An experiment was designed to apply a controlled bending to a tomato stem and simultaneously to measure its effect on stem elongation. Stem elongation was measured over 2 d until steady and equal rates were obtained for the control and the treated plants. Thereafter, the basal part of the stem was submitted to a trans...

journal_title：Journal of experimental botany

authors： Coutand C,Julien JL,Moulia B,Mauget JC,Guitard D

更新日期：2000-11-01 00:00:00

abstract：:We initially observed that Brassica rapa cultivars containing the Turnip mosaic virus (TuMV) resistance gene, Rnt1-1, accumulated a high level of endogenous ascorbic acid (AS) and dehydroascobic acid (DHA) when infected with TuMV. We here hypothesized a possible contribution of an elevated level of AS+DHA (TAA) to the...

journal_title：Journal of experimental botany

authors： Fujiwara A,Togawa S,Hikawa T,Matsuura H,Masuta C,Inukai T

更新日期：2016-07-01 00:00:00

abstract：:Manganese (Mn) is an essential micronutrient for plant growth but is often toxic in acid or waterlogged soils. Using cowpea (Vigna unguiculata L. Walp.) grown with 0.05-1500 μM Mn in solution, two short-term (48 h) solution culture experiments examined if the effects of cations (Ca, Mg, Na, Al, or H) on Mn nutrition a...

journal_title：Journal of experimental botany

authors： Kopittke PM,Blamey FP,Wang P,Menzies NW

更新日期：2011-07-01 00:00:00

abstract：:Examination of root tips from cucumber (Cucumis sativus L.) seedlings grown at 8 degrees C for varying periods ranging from 15 min to 96 h, showed marked changes in the ultrastructure of cortical cells within only 15 min of exposure. Greater parts of the cortex were affected with longer periods of exposure, but the se...

journal_title：Journal of experimental botany

authors： Lee SH,Singh AP,Chung GC,Kim YS,Kong IB

更新日期：2002-11-01 00:00:00

abstract：:Transcription factors are proposed as suitable targets for the control of traits such as yield or food quality in plants. This study reports the results of a functional genomics research effort that identified ATHB17, a transcription factor from the homeodomain-leucine zipper class II family, as a novel target for the...

journal_title：Journal of experimental botany

authors： Hymus GJ,Cai S,Kohl EA,Holtan HE,Marion CM,Tiwari S,Maszle DR,Lundgren MR,Hong MC,Channa N,Loida P,Thompson R,Taylor JP,Rice E,Repetti PP,Ratcliffe OJ,Reuber TL,Creelman RA

更新日期：2013-11-01 00:00:00

abstract：:The hydrophobic cell wall polymer lignin is deposited in specialized cells to make them impermeable to water and prevent cell collapse as negative pressure or gravitational force is exerted. The variation in lignin subunit composition that exists among different species, and among different tissues within the same spe...

journal_title：Journal of experimental botany

authors： Vermerris W,Sherman DM,McIntyre LM

更新日期：2010-05-01 00:00:00

abstract：:High temperatures are known to reduce anthocyanin accumulation in a number of diverse plant species. In potato (Solanum tuberosum L.), high temperature significantly reduces tuber anthocyanin pigment content. However, the mechanism of anthocyanin biosynthesis in potato tuber under heat stress remains unknown. Here we ...

journal_title：Journal of experimental botany

authors： Liu Y,Lin-Wang K,Espley RV,Wang L,Li Y,Liu Z,Zhou P,Zeng L,Zhang X,Zhang J,Allan AC

更新日期：2019-08-07 00:00:00

abstract：:Plants show varied cellular responses to salinity that are partly associated with maintaining low cytosolic Na(+) levels and a high K(+)/Na(+) ratio. Plant metabolites change with elevated Na(+), some changes are likely to help restore osmotic balance while others protect Na(+)-sensitive proteins. Metabolic responses ...

journal_title：Journal of experimental botany

authors： Widodo,Patterson JH,Newbigin E,Tester M,Bacic A,Roessner U

更新日期：2009-01-01 00:00:00

abstract：:Sugars regulate the expression of many genes at the transcriptional level. In Arabidopsis thaliana, sugars induce or repress the expression of >1800 genes, including the STP1 (SUGAR TRANSPORTER PROTEIN 1) gene, which encodes an H(+)/monosaccharide cotransporter. STP1 transcript levels decrease more rapidly after the a...

journal_title：Journal of experimental botany

authors： Cordoba E,Aceves-Zamudio DL,Hernández-Bernal AF,Ramos-Vega M,León P

更新日期：2015-01-01 00:00:00

abstract：:In C(3) plants, diffusion of CO(2) into leaves is restricted by stomata and subsequently by the intercellular airspaces and liquid phase into chloroplasts. While considerable information exists on the effect of environmental conditions on stomatal conductance (g(s)), little is known on whether the mesophyll conductanc...

journal_title：Journal of experimental botany

authors： Tazoe Y,von Caemmerer S,Badger MR,Evans JR

更新日期：2009-01-01 00:00:00

abstract：:DNA sequencing was dominated by Sanger's chain termination method until the mid-2000s, when it was progressively supplanted by new sequencing technologies that can generate much larger quantities of data in a shorter time. At the forefront of these developments, long-read sequencing technologies (third-generation sequ...

journal_title：Journal of experimental botany

authors： Dumschott K,Schmidt MH,Chawla HS,Snowdon R,Usadel B

更新日期：2020-09-19 00:00:00

abstract：:With the aim of increasing the cysteine level in rice (Oryza sativa L.) and thus improving its nutritional quality, transgenic rice plants were generated expressing an Escherichia coli serine acetyltransferase isoform (EcSAT), the enzyme synthesizing O-acetylserine, the precursor of cysteine. The gene was fused to the...

journal_title：Journal of experimental botany

authors： Nguyen HC,Hoefgen R,Hesse H

更新日期：2012-10-01 00:00:00

abstract：:To shed light on the specific contribution of HDA101 in modulating metabolic pathways in the maize seed, changes in the metabolic profiles of kernels obtained from hda101 mutant plants have been investigated by a metabonomic approach. Dynamic properties of chromatin folding can be mediated by enzymes that modify DNA a...

journal_title：Journal of experimental botany

authors： Castro C,Motto M,Rossi V,Manetti C

更新日期：2008-01-01 00:00:00

abstract：:An investigation was carried out to assess the effect of nitrate supply on the root plasma membrane (PM) H+-ATPase of etiolated maize (Zea mays L.) seedlings grown in hydroponics. The treatment induced higher uptake rates of the anion and the expression of a putative high-affinity nitrate transporter gene (ZmNRT2.1), ...

journal_title：Journal of experimental botany

authors： Santi S,Locci G,Monte R,Pinton R,Varanini Z

更新日期：2003-08-01 00:00:00

abstract：:We previously reported that a novel motor protein belonging to the kinesin-12 family, NtKRP, displays critical roles in regulating embryo and seed size establishment. However, it remains unknown exactly how NtKRP contributes to this developmental process. Here, we report that a 60S ribosomal protein NtRPL17 directly i...

journal_title：Journal of experimental botany

authors： Tian S,Wu J,Liu Y,Huang X,Li F,Wang Z,Sun MX

更新日期：2017-11-28 00:00:00

abstract：:Many molecular mechanisms that regulate dormancy have been identified individually in controlled laboratory studies. However, little is known about how the seed employs this complex suite of mechanisms during dormancy cycling in the variable environment of the soil seed bank. Nevertheless, this behaviour is essential ...

journal_title：Journal of experimental botany

authors： Finch-Savage WE,Footitt S

更新日期：2017-02-01 00:00:00

abstract：:Polarized growth of pollen tubes is a critical step for successful reproduction in angiosperms and is controlled by ROP GTPases. Spatiotemporal activation of ROP (Rho GTPases of plants) necessitates a complex and sophisticated regulatory system, in which guanine nucleotide exchange factors (RopGEFs) are key components...

journal_title：Journal of experimental botany

authors： Zhao XY,Wang Q,Li S,Ge FR,Zhou LZ,McCormick S,Zhang Y

更新日期：2013-12-01 00:00:00

abstract：:A major QTL affecting root traits and leaf ABA concentration was identified in maize (Zea mays L.) and named root-ABA1. For this QTL, back-cross-derived lines (BDLs) homozygous either for the (+) or for the (-) allele increasing or decreasing, respectively, root size and leaf ABA concentration, were developed. This st...

journal_title：Journal of experimental botany

authors： Landi P,Sanguineti MC,Liu C,Li Y,Wang TY,Giuliani S,Bellotti M,Salvi S,Tuberosa R

更新日期：2007-01-01 00:00:00

abstract：:The transcription factor Woolly (Wo) and its downstream gene CycB2 have been shown to regulate trichome development in tomato (Solanum lycopersicum). It has been demonstrated that only the gain-of-function allele of Slwo (SlWoV, the Slwo woolly motif mutant allele) can increase the trichome density; however, it remain...

journal_title：Journal of experimental botany

authors： Wu ML,Cui YC,Ge L,Cui LP,Xu ZC,Zhang HY,Wang ZJ,Zhou D,Wu S,Chen L,Cui H

更新日期：2020-03-25 00:00:00

abstract：:Leghemoglobins transport and deliver O2 to the symbiosomes inside legume nodules and are essential for nitrogen fixation. However, the roles of other hemoglobins (Hbs) in the rhizobia-legume symbiosis are unclear. Several Lotus japonicus mutants affecting LjGlb1-1, a non-symbiotic class 1 Hb, have been used to study t...

journal_title：Journal of experimental botany

authors： Fukudome M,Calvo-Begueria L,Kado T,Osuki K,Rubio MC,Murakami E,Nagata M,Kucho K,Sandal N,Stougaard J,Becana M,Uchiumi T

更新日期：2016-09-01 00:00:00

abstract：:Heat shock transcription factors (Hsfs) are the central regulators of the heat shock (HS) stress response in all eukaryotic organisms. HsfA2 is one of the Arabidopsis class A Hsfs, and the induction of HsfA2 expression in response to HS stress is highest among all 21 Arabidopsis Hsfs. In this study, it is reported tha...

journal_title：Journal of experimental botany

authors： Ogawa D,Yamaguchi K,Nishiuchi T

更新日期：2007-01-01 00:00:00

abstract：:Despite numerous reports implicating salicylic acid (SA) in plant salinity responses, the specific ionic mechanisms of SA-mediated adaptation to salt stress remain elusive. To address this issue, a non-invasive microelectrode ion flux estimation technique was used to study kinetics of NaCl-induced net ion fluxes in Ar...

journal_title：Journal of experimental botany

authors： Jayakannan M,Bose J,Babourina O,Rengel Z,Shabala S

更新日期：2013-05-01 00:00:00

abstract：:The endomembrane system offers many potential points where plant mating can be effectively controlled. This results from two basic features of angiosperm reproduction: the requirement for pollen tubes to pass through sporophytic tissues to gain access to ovules and the physiology of pollen tube growth that provides it...

journal_title：Journal of experimental botany

authors： Kumar A,McClure B

更新日期：2010-04-01 00:00:00

abstract：:The harpin protein Hpa1 has multiple beneficial effects in plants, promoting plant growth and development, increasing crop yield, and inducing resistance to pathogens and insect pests. For these effects, the 10-40 residue fragment (Hpa1₁₀₋₄₂) isolated from the Hpa1 sequence is 1.3- to 7.5-fold more effective than the ...

journal_title：Journal of experimental botany

authors： Fu M,Xu M,Zhou T,Wang D,Tian S,Han L,Dong H,Zhang C

更新日期：2014-04-01 00:00:00

abstract：:The transition to flowering is known to be regulated by numerous interacting endogenous and environmental cues, of which brassinosteroids (BRs), a group of polyhydroxylated steroid phytohormones, appear to be linked to the regulation of flowering time. In Arabidopsis, BR biosynthetic det2 mutants exhibited delayed flo...

journal_title：Journal of experimental botany

authors： Li J,Li Y,Chen S,An L

更新日期：2010-10-01 00:00:00

abstract：:Nitric oxide has been reported to act as a signalling molecule in different plant tissues and to participate in a variety of physiological processes. It is produced by different enzymes and sources. The root-specific plasma membrane-bound enzymes forming NO from the substrates nitrate and nitrite are of particular int...

journal_title：Journal of experimental botany

authors： Stöhr C,Stremlau S

更新日期：2006-01-01 00:00:00

abstract：:This paper gives a summary of a project to characterize a tobacco aquaporin. The cDNA and gene, including the 5' upstream region, for the tobacco aquaporin NtAQP1 has been isolated and the encoded protein characterized. The significance of promoter regions for an abscisic acid- and gibberellic acid-induced gene expres...

journal_title：Journal of experimental botany

authors： Siefritz F,Biela A,Eckert M,Otto B,Uehlein N,Kaldenhoff R

更新日期：2001-10-01 00:00:00

abstract：:With the general aim of elevating the content of the essential amino acid methionine in vegetative tissues of plants, alfalfa (Medicago sativa L.) and tobacco plants, as well as BY2 tobacco suspension cells, were transformed with a beta-zein::3HA gene under the 35S promoter of cauliflower mosaic virus encoding a rumen...

journal_title：Journal of experimental botany

authors： Amira G,Ifat M,Tal A,Hana B,Shmuel G,Rachel A

更新日期：2005-09-01 00:00:00

abstract：:The mechanism of the post-translational modulation of nitrate reductase activity (NR, EC 1.6.6.1) is briefly summarized, and it is shown that by this mechanism nitric oxide production through NR is also rapidly modulated. New and partly unexpected details on the modulation mechanism have been obtained by using immunol...

journal_title：Journal of experimental botany

authors： Kaiser WM,Weiner H,Kandlbinder A,Tsai CB,Rockel P,Sonoda M,Planchet E

更新日期：2002-04-01 00:00:00

abstract：:Plasma membrane vesicles isolated by two-phase partitioning from the storage root of Beta vulgaris show atypically high water permeability that is equivalent only to those reported for active aquaporins in tonoplast or animal red cells (Pf=542 microm s(-1)). The values were determined from the shrinking kinetics measu...

journal_title：Journal of experimental botany

authors： Alleva K,Niemietz CM,Sutka M,Maurel C,Parisi M,Tyerman SD,Amodeo G

更新日期：2006-01-01 00:00:00