Abstract:
KEY MESSAGE:Induced mutations in the waxy locus in rice endosperm did not abolish GBSS activity completely. Compensatory mechanisms in endosperm and leaves caused a major reprogramming of the starch biosynthetic machinery. The mutation of genes in the starch biosynthesis pathway has a profound effect on starch quality and quantity and is an important target for plant breeders. Mutations in endosperm starch biosynthetic genes may impact starch metabolism in vegetative tissues such as leaves in unexpected ways due to the complex feedback mechanisms regulating the pathway. Surprisingly this aspect of global starch metabolism has received little attention. We used CRISPR/Cas9 to introduce mutations affecting the Waxy (Wx) locus encoding granule-bound starch synthase I (GBSSI) in rice endosperm. Our specific objective was to develop a mechanistic understanding of how the endogenous starch biosynthetic machinery might be affected at the transcriptional level following the targeted knock out of GBSSI in the endosperm. We found that the mutations reduced but did not abolish GBSS activity in seeds due to partial compensation caused by the upregulation of GBSSII. The GBSS activity in the mutants was 61-71% of wild-type levels, similarly to two irradiation mutants, but the amylose content declined to 8-12% in heterozygous seeds and to as low as 5% in homozygous seeds, accompanied by abnormal cellular organization in the aleurone layer and amorphous starch grain structures. Expression of many other starch biosynthetic genes was modulated in seeds and leaves. This modulation of gene expression resulted in changes in AGPase and sucrose synthase activity that explained the corresponding levels of starch and soluble sugars.
journal_name
Plant Cell Repjournal_title
Plant cell reportsauthors
Pérez L,Soto E,Farré G,Juanos J,Villorbina G,Bassie L,Medina V,Serrato AJ,Sahrawy M,Rojas JA,Romagosa I,Muñoz P,Zhu C,Christou Pdoi
10.1007/s00299-019-02388-zsubject
Has Abstractpub_date
2019-03-01 00:00:00pages
417-433issue
3eissn
0721-7714issn
1432-203Xpii
10.1007/s00299-019-02388-zjournal_volume
38pub_type
杂志文章abstract:KEY MESSAGE:Transgenic rice overexpressing PLCP attenuated the virulence of Xanthomonas oryzae pv. oryzae through extensive activation of transduction signal and transcription activities that orchestrate downstream responses including the biosynthesis of secondary metabolites and up-regulation of several pathogenesis-r...
journal_title:Plant cell reports
pub_type: 杂志文章
doi:10.1007/s00299-019-02502-1
更新日期:2020-04-01 00:00:00
abstract::We have previously developed procedures for the efficient production of sweet orange (Citrus sinensis L. Osbeck) and Carrizo citrange (C. sinensis L. Osbeck×Poncirus trifoliata L. Raf.) transgenic plants using an Agrobacterium tumefaciens-mediated transformation and shoot tip grafting in vitro regeneration system. We ...
journal_title:Plant cell reports
pub_type: 杂志文章
doi:10.1007/s002990050311
更新日期:1997-09-01 00:00:00
abstract::Mitogen-activated protein kinase (MAPK) signaling cascades are evolutionarily conserved fundamental signal transduction pathways. A MAPK cascade consists of many distinct MAPKKK-MAPKK-MAPK modules linked to various upstream receptors and downstream targets through sequential phosphorylation and activation of the casca...
journal_title:Plant cell reports
pub_type: 杂志文章,评审
doi:10.1007/s00299-013-1437-y
更新日期:2013-06-01 00:00:00
abstract::Rice protoplasts (Oryza sativa L. v Taipei 309) have been transformed to kanamycin resistance following uptake of pCaMVNEO induced by electroporation, PEG and PEG combined with electroporation. Protoplast-derived colonies selected on medium containing 100 μg/ml of kanamycin expressed NPTII activity, and contained DNA ...
journal_title:Plant cell reports
pub_type: 杂志文章
doi:10.1007/BF00269528
更新日期:1988-10-01 00:00:00
abstract::This article describes conditions to optimize the yield of viable protoplasts from callus tissue of Asparagus densiflorus cv. Sprengeri and their subsequent regeneration into plantlets. Callus tissue was initiated by culturing spear sections (5-7 mm) on Murashige and Skoog (MS) medium supplemented with 0.8% (wt/vol) B...
journal_title:Plant cell reports
pub_type: 杂志文章
doi:10.1007/s002990050364
更新日期:1997-12-01 00:00:00
abstract:KEY MESSAGE:A chalcone synthase gene ( PaCHS ) was isolated and functionally characterized from liverwort. The ectopic expression of PaCHS in Marchantia paleacea callus raised the flavonoids content. Chalcone synthase (CHS; EC 2.3.1.74) is pivotal for the biosynthesis of flavonoid and anthocyanin pigments in plants. It...
journal_title:Plant cell reports
pub_type: 杂志文章
doi:10.1007/s00299-014-1702-8
更新日期:2015-02-01 00:00:00
abstract::Gastrodia elata Bl. is an achlorophyllous orchid plant feeding on the fungus Armillaria mellea. The plant lives underground during its life cycle except for florescence. Gastrodianins, members of the superfamily of monocot mannose-binding protein (MBP), have been identified from Gastrodia elata, yet their physiologica...
journal_title:Plant cell reports
pub_type: 杂志文章
doi:10.1007/s00299-006-0226-2
更新日期:2007-03-01 00:00:00
abstract::Salt tolerant cell lines have been selected from Medicago sativa, by a single step selection process on tissue culture medium containing 1% NaCl. Plants regenerated from these lines show improved salt tolerance compared to parent plants. The regenerated plants are vigorous, have flowered and are self fertile. The cell...
journal_title:Plant cell reports
pub_type: 杂志文章
doi:10.1007/BF00232511
更新日期:1991-12-01 00:00:00
abstract::Brassica juncea L. is a Zn/Cd accumulator. To determine the physiological basis of its metal accumulation phenotype, the functional properties and role of the metal efflux transporter BjCET2 were investigated using transgenic technology. Heterologous expression of BjCET2 in the double mutant yeast strain Deltazrc1Delt...
journal_title:Plant cell reports
pub_type: 杂志文章
doi:10.1007/s00299-009-0723-1
更新日期:2009-08-01 00:00:00
abstract:KEY MESSAGE:We provide evidence that nucleotide sequence and methylation status changes occur in the Arabidopsis genome during in vitro tissue culture at a frequency high enough to represent an important source of variation. Somaclonal variation is a general consequence of the tissue culture process that has to be anal...
journal_title:Plant cell reports
pub_type: 杂志文章
doi:10.1007/s00299-017-2217-x
更新日期:2018-01-01 00:00:00
abstract::A procedure has been developed for the clonal propagation of Picrorhiza kurroa Royle ex Benth. through shoot tip culture. Murashige and Skoog's medium (1962) supplemented with kinetin (3.0 to 5.0 mg/l) supported rapid proliferation of multiple shoots from the explants. Addition of indole-3-acetic acid (1.0 mg/l) to th...
journal_title:Plant cell reports
pub_type: 杂志文章
doi:10.1007/BF00269324
更新日期:1988-05-01 00:00:00
abstract::The activity of a predicted promoter, PMC8, from Milk vetch dwarf virus was evaluated by comparing it with the cauliflower mosaic virus 35S RNA promoter (P35S) and PNCR, a promoter from Soybean chlorotic mottle virus. When the GUS fusion gene was introduced into tobacco, PMC8 showed a similar expression profile to P35...
journal_title:Plant cell reports
pub_type: 杂志文章
doi:10.1007/s00299-005-0917-0
更新日期:2005-06-01 00:00:00
abstract::High yields of protoplasts were obtained from leaves of aseptically grown plants and calli originated from different explants, in several cultivars of Cajanus cajan L. The protoplasts divided to form cell clusters in modified KM 8p medium and developed to protocolonies after dilution with liquid Caboche's medium withi...
journal_title:Plant cell reports
pub_type: 杂志文章
doi:10.1007/BF00232691
更新日期:1992-08-01 00:00:00
abstract::The expression of green fluorescent protein (GFP) and its inheritance were studied in transgenic oat ( Avena sativa L.) plants transformed with a synthetic green fluorescent protein gene [sgfp(S65T)] driven by a rice actin promoter. In vitro shoot meristematic cultures (SMCs) induced from shoot apices of germinating m...
journal_title:Plant cell reports
pub_type: 杂志文章
doi:10.1007/s00299-002-0542-0
更新日期:2003-01-01 00:00:00
abstract::Phytohormones are essential signal compounds in the regulation of stress-related and defense-related genes. However, there is no clear evidence for any effect of these signal molecules and biotic elicitors on the regulation of the SALT gene in suspension-cultured rice cells. We characterized the expression of a SALT g...
journal_title:Plant cell reports
pub_type: 杂志文章
doi:10.1007/s00299-004-0836-5
更新日期:2004-10-01 00:00:00
abstract:KEY MESSAGE:Drastic changes in soil water content can activate the short-term high expression of key enzyme-encoding genes involved in secondary metabolite synthesis thereby increasing the content of secondary metabolites. Bupleurum chinense DC. is a traditional medicinal herb that is famous for its abundant saikosapon...
journal_title:Plant cell reports
pub_type: 杂志文章
doi:10.1007/s00299-019-02436-8
更新日期:2019-09-01 00:00:00
abstract::Plant regeneration from immature embryos of peanut (Arachis hypogaea L.) can be accomplished through somatic embryogenesis. The highest frequency of somatic embryo formation occurred on B5 medium plus 0.5-1.0 mg/l picloram. Shoots and plants developed from the somatic embryos only after extended culture on basal mediu...
journal_title:Plant cell reports
pub_type: 杂志文章
doi:10.1007/BF00778536
更新日期:1989-04-01 00:00:00
abstract::Innovations in plant breeding like genome editing methods raised questions about the adequacy of established regulatory policies for plant breeding and biotechnology in view of these new breeding methods and the resulting products. Most countries follow the principle approach that only those plants will be regulated u...
journal_title:Plant cell reports
pub_type: 杂志文章
doi:10.1007/s00299-019-02482-2
更新日期:2020-01-01 00:00:00
abstract::Protoplasts isolated from cultured rice cells of an A-58 cytoplasmic male sterile line (A-58 MS)(Oryza sativa L.) were used to investigate the regeneration of rice plants. A cultured cell line (T3) of A-58 MS with a high growth rate and dense cytoplasm was selected. About 10% of the protoplasts prepared from this esta...
journal_title:Plant cell reports
pub_type: 杂志文章
doi:10.1007/BF00269240
更新日期:1986-04-01 00:00:00
abstract::Jasmonates enhance the expression of various genes involved in terpenoid indole alkaloid (TIA) biosynthesis in Catharanthus roseus. We applied precursor feeding to our C. roseus suspensions to determine how methyl jasmonate (MJ) alters the precursor availability for TIA biosynthesis. C. roseus suspensions were induced...
journal_title:Plant cell reports
pub_type: 杂志文章
doi:10.1007/s00299-005-0109-y
更新日期:2006-06-01 00:00:00
abstract::Anthocyanin is the primary pigment contributing to red, violet, and blue flower color formation. The solubility of anthocyanins is enhanced by UDP glucose: flavonoid 3-O-glucosyltransferase (UFGT) through transfer of the glucosyl moiety from UDP-glucose to 3-hydroxyl group to produce the first stable pigments. To asse...
journal_title:Plant cell reports
pub_type: 杂志文章
doi:10.1007/s00299-011-1006-1
更新日期:2011-06-01 00:00:00
abstract::A novel genic male sterile (GMS) line in Brassica napus L., which was identified in 1999, was found to be controlled by a monogenic dominant gene, which we have designated as MDGMS. The microspores of the MDGMS abort before the degradation of the tapetal cell layer. The F1 fertility from any fertile lines crossed with...
journal_title:Plant cell reports
pub_type: 杂志文章
doi:10.1007/s00299-006-0276-5
更新日期:2007-05-01 00:00:00
abstract::Phenylalanine ammonia-lyase [PAL, EC 4.3.1.24 (formerly EC 4.3.1.5)], functions in the plant phenylpropanoid biosynthetic pathway to deaminate the amino acid L-phenylalanine forming trans-cinnamic acid and ammonia. The human inherited metabolic disorder phenylketonuria (PKU) is characterized by an inability of individ...
journal_title:Plant cell reports
pub_type: 杂志文章
doi:10.1007/s00299-008-0650-6
更新日期:2009-03-01 00:00:00
abstract::A restricted part of the undeveloped stem of the garlic clove, called the "stem disc", which is just under the basement of the immature foliage leaves, proved to be a very potent explant for the micropropagation of garlic. Twenty to thirty tissue-cultured shoots consistently were differentiated from a single clove dur...
journal_title:Plant cell reports
pub_type: 杂志文章
doi:10.1007/s002990050481
更新日期:1998-07-01 00:00:00
abstract::MicroRNAs (miRNAs) are small non-coding RNAs that play vital roles in plant abiotic stress responses via cleavage or translational inhibition of their target mRNAs. Populus euphratica is a typical stress-resistant sessile organism that grows in desert areas. Here, we identified sequences of 12 miRNA precursors from 11...
journal_title:Plant cell reports
pub_type: 杂志文章
doi:10.1007/s00299-011-1096-9
更新日期:2011-10-01 00:00:00
abstract::Optimal protoplast yields from cotyledons (2.0×10(6) protoplasts/ 0.5 g tissue) and from true leaves (5.0×10(6) protoplasts/g tissue) of two Cucumis sativus genotypes were obtained following a 16 h digestion with, respectively, 1.25% pectinase+0.5% Cellulysin and 0.5 % pectinase+ 1.0% Cellulysin. Enzyme solutions were...
journal_title:Plant cell reports
pub_type: 杂志文章
doi:10.1007/BF00231549
更新日期:1990-07-01 00:00:00
abstract:: St. John's wort (Hypericum perforatum. cv 'Anthos') is a medicinal plant with evidence of efficacy as an anti-depressant. The present report describes the development of an in vitro regeneration system that utilizes thidiazuron [N-phenyl-N'-(1,2,3-thidiazol-yl)urea] for the induction of de novo shoots on etiolated hy...
journal_title:Plant cell reports
pub_type: 杂志文章
doi:10.1007/s002990050776
更新日期:2000-05-01 00:00:00
abstract::Independent carrot (Daucus carota) hairy root lines were established by inoculation of discs taken from the same carrot with Agrobacterium rhizogenes 8196 and A. tumefaciens C58C1(pRi8196) carrying pRi8196. Several lines were compared with respect to T-DNA length. One of them was found to have integrated sequences cov...
journal_title:Plant cell reports
pub_type: 杂志文章
doi:10.1007/BF00270112
更新日期:1988-03-01 00:00:00
abstract::Arabinogalactan proteins (AGPs) are important proteoglycans regulating somatic embryogenesis in diverse plant species. Embryogenic cells of somatic embryos are covered by special extracellular cell wall layer called extracellular surface matrix network (ECMSN) at their early developmental stages. Here we show that hig...
journal_title:Plant cell reports
pub_type: 杂志文章
doi:10.1007/s00299-007-0429-1
更新日期:2008-02-01 00:00:00
abstract::KEY MESSAGE : Two soybean cultivars showed markedly different drought tolerance. G6PDH plays a central role in the process of H ( 2 ) O ( 2 ...
journal_title:Plant cell reports
pub_type: 杂志文章
doi:10.1007/s00299-012-1374-1
更新日期:2013-03-01 00:00:00