Leaf shedding as an anti-bacterial defense in Arabidopsis cauline leaves.

Abstract:

:Plants utilize an innate immune system to protect themselves from disease. While many molecular components of plant innate immunity resemble the innate immunity of animals, plants also have evolved a number of truly unique defense mechanisms, particularly at the physiological level. Plant's flexible developmental program allows them the unique ability to simply produce new organs as needed, affording them the ability to replace damaged organs. Here we develop a system to study pathogen-triggered leaf abscission in Arabidopsis. Cauline leaves infected with the bacterial pathogen Pseudomonas syringae abscise as part of the defense mechanism. Pseudomonas syringae lacking a functional type III secretion system fail to elicit an abscission response, suggesting that the abscission response is a novel form of immunity triggered by effectors. HAESA/HAESA-like 2, INFLORESCENCE DEFICIENT IN ABSCISSION, and NEVERSHED are all required for pathogen-triggered abscission to occur. Additionally phytoalexin deficient 4, enhanced disease susceptibility 1, salicylic acid induction-deficient 2, and senescence-associated gene 101 plants with mutations in genes necessary for bacterial defense and salicylic acid signaling, and NahG transgenic plants with low levels of salicylic acid fail to abscise cauline leaves normally. Bacteria that physically contact abscission zones trigger a strong abscission response; however, long-distance signals are also sent from distal infected tissue to the abscission zone, alerting the abscission zone of looming danger. We propose a threshold model regulating cauline leaf defense where minor infections are handled by limiting bacterial growth, but when an infection is deemed out of control, cauline leaves are shed. Together with previous results, our findings suggest that salicylic acid may regulate both pathogen- and drought-triggered leaf abscission.

journal_name

PLoS Genet

journal_title

PLoS genetics

authors

Patharkar OR,Gassmann W,Walker JC

doi

10.1371/journal.pgen.1007132

subject

Has Abstract

pub_date

2017-12-18 00:00:00

pages

e1007132

issue

12

eissn

1553-7390

issn

1553-7404

pii

PGENETICS-D-17-01843

journal_volume

13

pub_type

杂志文章
  • Germline mutation in NLRP2 (NALP2) in a familial imprinting disorder (Beckwith-Wiedemann Syndrome).

    abstract::Beckwith-Wiedemann syndrome (BWS) is a fetal overgrowth and human imprinting disorder resulting from the deregulation of a number of genes, including IGF2 and CDKN1C, in the imprinted gene cluster on chromosome 11p15.5. Most cases are sporadic and result from epimutations at either of the two 11p15.5 imprinting centre...

    journal_title:PLoS genetics

    pub_type: 杂志文章

    doi:10.1371/journal.pgen.1000423

    authors: Meyer E,Lim D,Pasha S,Tee LJ,Rahman F,Yates JR,Woods CG,Reik W,Maher ER

    更新日期:2009-03-01 00:00:00

  • Dietary restriction in Drosophila: delayed aging or experimental artefact?

    abstract::Lifespan can be extended by reduction of dietary intake. This practice is referred to as dietary restriction (DR), and extension of lifespan by DR is evolutionarily conserved in taxonomically diverse organisms including yeast, invertebrates, and mammals. Although these two often-stated facts carry the implication that...

    journal_title:PLoS genetics

    pub_type: 杂志文章,评审

    doi:10.1371/journal.pgen.0030057

    authors: Piper MD,Partridge L

    更新日期:2007-04-27 00:00:00

  • Muscle-specific splicing factors ASD-2 and SUP-12 cooperatively switch alternative pre-mRNA processing patterns of the ADF/cofilin gene in Caenorhabditis elegans.

    abstract::Pre-mRNAs are often processed in complex patterns in tissue-specific manners to produce a variety of protein isoforms from single genes. However, mechanisms orchestrating the processing of the entire transcript are not well understood. Muscle-specific alternative pre-mRNA processing of the unc-60 gene in Caenorhabditi...

    journal_title:PLoS genetics

    pub_type: 杂志文章

    doi:10.1371/journal.pgen.1002991

    authors: Ohno G,Ono K,Togo M,Watanabe Y,Ono S,Hagiwara M,Kuroyanagi H

    更新日期:2012-01-01 00:00:00

  • A cis-regulatory signature for chordate anterior neuroectodermal genes.

    abstract::One of the striking findings of comparative developmental genetics was that expression patterns of core transcription factors are extraordinarily conserved in bilaterians. However, it remains unclear whether cis-regulatory elements of their target genes also exhibit common signatures associated with conserved embryoni...

    journal_title:PLoS genetics

    pub_type: 杂志文章

    doi:10.1371/journal.pgen.1000912

    authors: Haeussler M,Jaszczyszyn Y,Christiaen L,Joly JS

    更新日期:2010-04-15 00:00:00

  • Phoenix is required for mechanosensory hair cell regeneration in the zebrafish lateral line.

    abstract::In humans, the absence or irreversible loss of hair cells, the sensory mechanoreceptors in the cochlea, accounts for a large majority of acquired and congenital hearing disorders. In the auditory and vestibular neuroepithelia of the inner ear, hair cells are accompanied by another cell type called supporting cells. Th...

    journal_title:PLoS genetics

    pub_type: 杂志文章

    doi:10.1371/journal.pgen.1000455

    authors: Behra M,Bradsher J,Sougrat R,Gallardo V,Allende ML,Burgess SM

    更新日期:2009-04-01 00:00:00

  • A combinatorial amino acid code for RNA recognition by pentatricopeptide repeat proteins.

    abstract::The pentatricopeptide repeat (PPR) is a helical repeat motif found in an exceptionally large family of RNA-binding proteins that functions in mitochondrial and chloroplast gene expression. PPR proteins harbor between 2 and 30 repeats and typically bind single-stranded RNA in a sequence-specific fashion. However, the b...

    journal_title:PLoS genetics

    pub_type: 杂志文章

    doi:10.1371/journal.pgen.1002910

    authors: Barkan A,Rojas M,Fujii S,Yap A,Chong YS,Bond CS,Small I

    更新日期:2012-01-01 00:00:00

  • The Zic family homologue Odd-paired regulates Alk expression in Drosophila.

    abstract::The Anaplastic Lymphoma Kinase (Alk) receptor tyrosine kinase (RTK) plays a critical role in the specification of founder cells (FCs) in the Drosophila visceral mesoderm (VM) during embryogenesis. Reporter gene and CRISPR/Cas9 deletion analysis reveals enhancer regions in and upstream of the Alk locus that influence t...

    journal_title:PLoS genetics

    pub_type: 杂志文章

    doi:10.1371/journal.pgen.1006617

    authors: Mendoza-García P,Hugosson F,Fallah M,Higgins ML,Iwasaki Y,Pfeifer K,Wolfstetter G,Varshney G,Popichenko D,Gergen JP,Hens K,Deplancke B,Palmer RH

    更新日期:2017-04-03 00:00:00

  • The tau tubulin kinases TTBK1/2 promote accumulation of pathological TDP-43.

    abstract::Pathological aggregates of phosphorylated TDP-43 characterize amyotrophic lateral sclerosis (ALS) and frontotemporal lobar degeneration (FTLD-TDP), two devastating groups of neurodegenerative disease. Kinase hyperactivity may be a consistent feature of ALS and FTLD-TDP, as phosphorylated TDP-43 is not observed in the ...

    journal_title:PLoS genetics

    pub_type: 杂志文章

    doi:10.1371/journal.pgen.1004803

    authors: Liachko NF,McMillan PJ,Strovas TJ,Loomis E,Greenup L,Murrell JR,Ghetti B,Raskind MA,Montine TJ,Bird TD,Leverenz JB,Kraemer BC

    更新日期:2014-12-04 00:00:00

  • Interplay between mitochondria and diet mediates pathogen and stress resistance in Caenorhabditis elegans.

    abstract::Diet is a crucial determinant of organismal biology; interactions between the host, its diet, and its microbiota are critical to determining the health of an organism. A variety of genetic and biochemical means were used to assay stress sensitivity in C. elegans reared on two standard laboratory diets: E. coli OP50, t...

    journal_title:PLoS genetics

    pub_type: 杂志文章

    doi:10.1371/journal.pgen.1008011

    authors: Revtovich AV,Lee R,Kirienko NV

    更新日期:2019-03-13 00:00:00

  • Destabilizing protein polymorphisms in the genetic background direct phenotypic expression of mutant SOD1 toxicity.

    abstract::Genetic background exerts a strong modulatory effect on the toxicity of aggregation-prone proteins in conformational diseases. In addition to influencing the misfolding and aggregation behavior of the mutant proteins, polymorphisms in putative modifier genes may affect the molecular processes leading to the disease ph...

    journal_title:PLoS genetics

    pub_type: 杂志文章

    doi:10.1371/journal.pgen.1000399

    authors: Gidalevitz T,Krupinski T,Garcia S,Morimoto RI

    更新日期:2009-03-01 00:00:00

  • A genetic basis for a postmeiotic X versus Y chromosome intragenomic conflict in the mouse.

    abstract::Intragenomic conflicts arise when a genetic element favours its own transmission to the detriment of others. Conflicts over sex chromosome transmission are expected to have influenced genome structure, gene regulation, and speciation. In the mouse, the existence of an intragenomic conflict between X- and Y-linked mult...

    journal_title:PLoS genetics

    pub_type: 杂志文章

    doi:10.1371/journal.pgen.1002900

    authors: Cocquet J,Ellis PJ,Mahadevaiah SK,Affara NA,Vaiman D,Burgoyne PS

    更新日期:2012-09-01 00:00:00

  • A cis-acting diversification activator both necessary and sufficient for AID-mediated hypermutation.

    abstract::Hypermutation of the immunoglobulin (Ig) genes requires Activation Induced cytidine Deaminase (AID) and transcription, but it remains unclear why other transcribed genes of B cells do not mutate. We describe a reporter transgene crippled by hypermutation when inserted into or near the Ig light chain (IgL) locus of the...

    journal_title:PLoS genetics

    pub_type: 杂志文章

    doi:10.1371/journal.pgen.1000332

    authors: Blagodatski A,Batrak V,Schmidl S,Schoetz U,Caldwell RB,Arakawa H,Buerstedde JM

    更新日期:2009-01-01 00:00:00

  • Binary addition in a living cell based on riboregulation.

    abstract::Synthetic biology aims at (re-)programming living cells like computers to perform new functions for a variety of applications. Initial work rested on transcription factors, but regulatory RNAs have recently gained much attention due to their high programmability. However, functional circuits mainly implemented with re...

    journal_title:PLoS genetics

    pub_type: 杂志文章

    doi:10.1371/journal.pgen.1007548

    authors: Rosado A,Cordero T,Rodrigo G

    更新日期:2018-07-19 00:00:00

  • New microRNAs in Drosophila--birth, death and cycles of adaptive evolution.

    abstract::The origin and evolution of new microRNAs (miRNAs) is important because they can impact the transcriptome broadly. As miRNAs can potentially emerge constantly and rapidly, their rates of birth and evolution have been extensively debated. However, most new miRNAs identified appear not to be biologically significant. Af...

    journal_title:PLoS genetics

    pub_type: 杂志文章

    doi:10.1371/journal.pgen.1004096

    authors: Lyu Y,Shen Y,Li H,Chen Y,Guo L,Zhao Y,Hungate E,Shi S,Wu CI,Tang T

    更新日期:2014-01-01 00:00:00

  • CorE from Myxococcus xanthus is a copper-dependent RNA polymerase sigma factor.

    abstract::The dual toxicity/essentiality of copper forces cells to maintain a tightly regulated homeostasis for this metal in all living organisms, from bacteria to humans. Consequently, many genes have previously been reported to participate in copper detoxification in bacteria. Myxococcus xanthus, a prokaryote, encodes many p...

    journal_title:PLoS genetics

    pub_type: 杂志文章

    doi:10.1371/journal.pgen.1002106

    authors: Gómez-Santos N,Pérez J,Sánchez-Sutil MC,Moraleda-Muñoz A,Muñoz-Dorado J

    更新日期:2011-06-01 00:00:00

  • Chromosomal Integrity after UV Irradiation Requires FANCD2-Mediated Repair of Double Strand Breaks.

    abstract::Fanconi Anemia (FA) is a rare autosomal recessive disorder characterized by hypersensitivity to inter-strand crosslinks (ICLs). FANCD2, a central factor of the FA pathway, is essential for the repair of double strand breaks (DSBs) generated during fork collapse at ICLs. While lesions different from ICLs can also trigg...

    journal_title:PLoS genetics

    pub_type: 杂志文章

    doi:10.1371/journal.pgen.1005792

    authors: Federico MB,Vallerga MB,Radl A,Paviolo NS,Bocco JL,Di Giorgio M,Soria G,Gottifredi V

    更新日期:2016-01-14 00:00:00

  • Mediation analysis demonstrates that trans-eQTLs are often explained by cis-mediation: a genome-wide analysis among 1,800 South Asians.

    abstract::A large fraction of human genes are regulated by genetic variation near the transcribed sequence (cis-eQTL, expression quantitative trait locus), and many cis-eQTLs have implications for human disease. Less is known regarding the effects of genetic variation on expression of distant genes (trans-eQTLs) and their biolo...

    journal_title:PLoS genetics

    pub_type: 杂志文章,随机对照试验

    doi:10.1371/journal.pgen.1004818

    authors: Pierce BL,Tong L,Chen LS,Rahaman R,Argos M,Jasmine F,Roy S,Paul-Brutus R,Westra HJ,Franke L,Esko T,Zaman R,Islam T,Rahman M,Baron JA,Kibriya MG,Ahsan H

    更新日期:2014-12-04 00:00:00

  • A conserved domain in the scc3 subunit of cohesin mediates the interaction with both mcd1 and the cohesin loader complex.

    abstract::The Structural Maintenance of Chromosome (SMC) complex, termed cohesin, is essential for sister chromatid cohesion. Cohesin is also important for chromosome condensation, DNA repair, and gene expression. Cohesin is comprised of Scc3, Mcd1, Smc1, and Smc3. Scc3 also binds Pds5 and Wpl1, cohesin-associated proteins that...

    journal_title:PLoS genetics

    pub_type: 杂志文章

    doi:10.1371/journal.pgen.1005036

    authors: Orgil O,Matityahu A,Eng T,Guacci V,Koshland D,Onn I

    更新日期:2015-03-06 00:00:00

  • Loss of hepatocyte cell division leads to liver inflammation and fibrosis.

    abstract::The liver possesses a remarkable regenerative capacity based partly on the ability of hepatocytes to re-enter the cell cycle and divide to replace damaged cells. This capability is substantially reduced upon chronic damage, but it is not clear if this is a cause or consequence of liver disease. Here, we investigate wh...

    journal_title:PLoS genetics

    pub_type: 杂志文章

    doi:10.1371/journal.pgen.1009084

    authors: Dewhurst MR,Ow JR,Zafer G,van Hul NKM,Wollmann H,Bisteau X,Brough D,Choi H,Kaldis P

    更新日期:2020-11-04 00:00:00

  • Transgene induced co-suppression during vegetative growth in Cryptococcus neoformans.

    abstract::Introduction of DNA sequences into the genome often results in homology-dependent gene silencing in organisms as diverse as plants, fungi, flies, nematodes, and mammals. We previously showed in Cryptococcus neoformans that a repeat transgene array can induce gene silencing at a high frequency during mating (∼50%), but...

    journal_title:PLoS genetics

    pub_type: 杂志文章

    doi:10.1371/journal.pgen.1002885

    authors: Wang X,Wang P,Sun S,Darwiche S,Idnurm A,Heitman J

    更新日期:2012-01-01 00:00:00

  • Transcriptome and epigenome diversity and plasticity of muscle stem cells following transplantation.

    abstract::Adult skeletal muscles are maintained during homeostasis and regenerated upon injury by muscle stem cells (MuSCs). A heterogeneity in self-renewal, differentiation and regeneration properties has been reported for MuSCs based on their anatomical location. Although MuSCs derived from extraocular muscles (EOM) have a hi...

    journal_title:PLoS genetics

    pub_type: 杂志文章

    doi:10.1371/journal.pgen.1009022

    authors: Evano B,Gill D,Hernando-Herraez I,Comai G,Stubbs TM,Commere PH,Reik W,Tajbakhsh S

    更新日期:2020-10-30 00:00:00

  • Transcription facilitated genome-wide recruitment of topoisomerase I and DNA gyrase.

    abstract::Movement of the transcription machinery along a template alters DNA topology resulting in the accumulation of supercoils in DNA. The positive supercoils generated ahead of transcribing RNA polymerase (RNAP) and the negative supercoils accumulating behind impose severe topological constraints impeding transcription pro...

    journal_title:PLoS genetics

    pub_type: 杂志文章

    doi:10.1371/journal.pgen.1006754

    authors: Ahmed W,Sala C,Hegde SR,Jha RK,Cole ST,Nagaraja V

    更新日期:2017-05-02 00:00:00

  • Tcf7 is an important regulator of the switch of self-renewal and differentiation in a multipotential hematopoietic cell line.

    abstract::A critical problem in biology is understanding how cells choose between self-renewal and differentiation. To generate a comprehensive view of the mechanisms controlling early hematopoietic precursor self-renewal and differentiation, we used systems-based approaches and murine EML multipotential hematopoietic precursor...

    journal_title:PLoS genetics

    pub_type: 杂志文章

    doi:10.1371/journal.pgen.1002565

    authors: Wu JQ,Seay M,Schulz VP,Hariharan M,Tuck D,Lian J,Du J,Shi M,Ye Z,Gerstein M,Snyder MP,Weissman S

    更新日期:2012-01-01 00:00:00

  • Reversible Oxidation of a Conserved Methionine in the Nuclear Export Sequence Determines Subcellular Distribution and Activity of the Fungal Nitrate Regulator NirA.

    abstract::The assimilation of nitrate, a most important soil nitrogen source, is tightly regulated in microorganisms and plants. In Aspergillus nidulans, during the transcriptional activation process of nitrate assimilatory genes, the interaction between the pathway-specific transcription factor NirA and the exportin KapK/CRM1 ...

    journal_title:PLoS genetics

    pub_type: 杂志文章

    doi:10.1371/journal.pgen.1005297

    authors: Gallmetzer A,Silvestrini L,Schinko T,Gesslbauer B,Hortschansky P,Dattenböck C,Muro-Pastor MI,Kungl A,Brakhage AA,Scazzocchio C,Strauss J

    更新日期:2015-07-01 00:00:00

  • Spatial fluctuations in expression of the heterocyst differentiation regulatory gene hetR in Anabaena filaments.

    abstract::Under nitrogen deprivation, filaments of the cyanobacterium Anabaena undergo a process of development, resulting in a one-dimensional pattern of nitrogen-fixing heterocysts separated by about ten photosynthetic vegetative cells. Many aspects of gene expression before nitrogen deprivation and during the developmental p...

    journal_title:PLoS genetics

    pub_type: 杂志文章

    doi:10.1371/journal.pgen.1005031

    authors: Corrales-Guerrero L,Tal A,Arbel-Goren R,Mariscal V,Flores E,Herrero A,Stavans J

    更新日期:2015-04-01 00:00:00

  • Cardiomyocyte Regulation of Systemic Lipid Metabolism by the Apolipoprotein B-Containing Lipoproteins in Drosophila.

    abstract::The heart has emerged as an important organ in the regulation of systemic lipid homeostasis; however, the underlying mechanism remains poorly understood. Here, we show that Drosophila cardiomyocytes regulate systemic lipid metabolism by producing apolipoprotein B-containing lipoproteins (apoB-lipoproteins), essential ...

    journal_title:PLoS genetics

    pub_type: 杂志文章

    doi:10.1371/journal.pgen.1006555

    authors: Lee S,Bao H,Ishikawa Z,Wang W,Lim HY

    更新日期:2017-01-17 00:00:00

  • A role for E2F activities in determining the fate of Myc-induced lymphomagenesis.

    abstract::The phenotypic heterogeneity that characterizes human cancers reflects the enormous genetic complexity of the oncogenic process. This complexity can also be seen in mouse models where it is frequently observed that in addition to the initiating genetic alteration, the resulting tumor harbors additional, somatically ac...

    journal_title:PLoS genetics

    pub_type: 杂志文章

    doi:10.1371/journal.pgen.1000640

    authors: Rempel RE,Mori S,Gasparetto M,Glozak MA,Andrechek ER,Adler SB,Laakso NM,Lagoo AS,Storms R,Smith C,Nevins JR

    更新日期:2009-09-01 00:00:00

  • Patterns of positive selection in six Mammalian genomes.

    abstract::Genome-wide scans for positively selected genes (PSGs) in mammals have provided insight into the dynamics of genome evolution, the genetic basis of differences between species, and the functions of individual genes. However, previous scans have been limited in power and accuracy owing to small numbers of available gen...

    journal_title:PLoS genetics

    pub_type: 杂志文章

    doi:10.1371/journal.pgen.1000144

    authors: Kosiol C,Vinar T,da Fonseca RR,Hubisz MJ,Bustamante CD,Nielsen R,Siepel A

    更新日期:2008-08-01 00:00:00

  • Maternal ethanol consumption alters the epigenotype and the phenotype of offspring in a mouse model.

    abstract::Recent studies have shown that exposure to some nutritional supplements and chemicals in utero can affect the epigenome of the developing mouse embryo, resulting in adult disease. Our hypothesis is that epigenetics is also involved in the gestational programming of adult phenotype by alcohol. We have developed a model...

    journal_title:PLoS genetics

    pub_type: 杂志文章

    doi:10.1371/journal.pgen.1000811

    authors: Kaminen-Ahola N,Ahola A,Maga M,Mallitt KA,Fahey P,Cox TC,Whitelaw E,Chong S

    更新日期:2010-01-15 00:00:00

  • C. elegans CLASP/CLS-2 negatively regulates membrane ingression throughout the oocyte cortex and is required for polar body extrusion.

    abstract::The requirements for oocyte meiotic cytokinesis during polar body extrusion are not well understood. In particular, the relationship between the oocyte meiotic spindle and polar body contractile ring dynamics remains largely unknown. We have used live cell imaging and spindle assembly defective mutants lacking the fun...

    journal_title:PLoS genetics

    pub_type: 杂志文章

    doi:10.1371/journal.pgen.1008751

    authors: Schlientz AJ,Bowerman B

    更新日期:2020-10-07 00:00:00