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Investigations of the Root-Knot Nematode Meloidogyne Enterolobii in North Carolina: Hosts and Resistance, Management, and Pathogen Interactions- [electronic resource]
Investigations of the Root-Knot Nematode Meloidogyne Enterolobii in North Carolina: Hosts and Resistance, Management, and Pathogen Interactions- [electronic resource]

상세정보

자료유형  
 학위논문
Control Number  
0016935193
International Standard Book Number  
9798380712446
Dewey Decimal Classification Number  
600
Main Entry-Personal Name  
Schwarz, Tanner.
Publication, Distribution, etc. (Imprint  
[S.l.] : North Carolina State University., 2023
Publication, Distribution, etc. (Imprint  
Ann Arbor : ProQuest Dissertations & Theses, 2023
Physical Description  
1 online resource(184 p.)
General Note  
Source: Dissertations Abstracts International, Volume: 85-05, Section: B.
General Note  
Advisor: Schultheis, Jonathan;Gorny, Adrienne.
Dissertation Note  
Thesis (Ph.D.)--North Carolina State University, 2023.
Restrictions on Access Note  
This item must not be sold to any third party vendors.
Summary, Etc.  
요약Meloidogyne enterolobii is a devastating and highly impactful species of root-knot nematode (RKN). Its ability to infect a broad range of host plants and overcome RKN resistance genes has threatened crop production. Despite its characterization in 1983, there are knowledge gaps about biology, plant resistant genotypes, and pathogen interactions of M. enterolobii. Meloidogyne enterolobii is considered highly aggressive, causing more severe symptomology than other RKN species, although factors contributing to the aggression are relatively unknown. The proportion of eggs that successfully hatch into second-stage juveniles were evaluated among three RKN species, M. enterolobii, M. hapla, and M. incognita race 4 within in vitro laboratory experiments. It was found that M. enterolobii had a significantly greater proportion of hatched eggs compared to the other two species, while M. incognita had the lowest proportion. Based on these data, it is hypothesized that M. enterolobii may possess a biological advantage of significantly increased egg hatching when compared to M. incognita and M. hapla, potentially leading to the reported aggressiveness and severity of symptoms observed of M. enterolobii.Nematode-resistant plant genotypes are an effective, environmentally sustainable, and cost-efficient tool for managing disease, yet M. enterolobii is capable of infecting currently deployed sweetpotato and soybean genotypes. Therefore, new sources of resistance are needed. Potential resistance to M. enterolobii was evaluated in 51 diverse sweetpotato genotypes, 72 Glycine soja and 44 Glycine max soybean genotypes in greenhouse bioassay experiments. Twelve sweetpotato genotypes and five G. soja soybean genotypes were identified as resistant, while none of the G. max genotypes were resistant. These results add to the knowledge of host status and potential natural resistance to M. enterolobiiin sweetpotato and soybean to improve management and aid plant breeding efforts.Weeds that compete with crops can host RKN, acting as a source of nematode inoculum in a field and further damaging crops. The host status of ten weed species commonly found in North Carolina was determined to the RKN species M. enterolobii and M. incognitarace 4 in a greenhouse bioassay. Differential host status of the weeds to these RKN species were documented. These results highlight the necessity of managing RKN through controlling weeds in order to protect crops.Virulent isolates of RKN have been reported to overcome plant resistance through either naturally occurring populations or selection due to continuous exposure to a resistance gene. Yet it is unknown if this selection for virulence may occur among M. enterolobii populations. Phenotypically distinct isolates of M. enterolobii that reproduce on sweetpotato cultivars previously regarded as resistant were characterized at three time points across diverse sweetpotato germplasm. Isolates of M. enterolobiithat were previously passed through certain resistant sweetpotato genotypes developed into 'break isolates', causing infection and root galling. This study aids to better understand host-nematode interactions and begin assessing risk of resistance breaking strains in the field.
Subject Added Entry-Topical Term  
Infections.
Subject Added Entry-Topical Term  
Fungi.
Subject Added Entry-Topical Term  
Weeds.
Subject Added Entry-Topical Term  
Pathogens.
Subject Added Entry-Topical Term  
Feeds.
Subject Added Entry-Topical Term  
Agricultural production.
Subject Added Entry-Topical Term  
Food.
Subject Added Entry-Topical Term  
Flowers & plants.
Subject Added Entry-Topical Term  
Crop rotation.
Subject Added Entry-Topical Term  
Tomatoes.
Subject Added Entry-Topical Term  
Bacteria.
Subject Added Entry-Topical Term  
Cardiovascular disease.
Subject Added Entry-Topical Term  
Plant resistance.
Subject Added Entry-Topical Term  
Germplasm.
Subject Added Entry-Topical Term  
Eggs.
Subject Added Entry-Topical Term  
Crop diseases.
Subject Added Entry-Topical Term  
Genotype & phenotype.
Subject Added Entry-Topical Term  
Soybeans.
Subject Added Entry-Topical Term  
Virulence.
Subject Added Entry-Topical Term  
Nematodes.
Subject Added Entry-Topical Term  
Agriculture.
Subject Added Entry-Topical Term  
Agronomy.
Subject Added Entry-Topical Term  
Botany.
Subject Added Entry-Topical Term  
Genetics.
Subject Added Entry-Topical Term  
Medicine.
Subject Added Entry-Topical Term  
Plant pathology.
Subject Added Entry-Topical Term  
Plant sciences.
Subject Added Entry-Topical Term  
Public health.
Added Entry-Corporate Name  
North Carolina State University.
Host Item Entry  
Dissertations Abstracts International. 85-05B.
Host Item Entry  
Dissertation Abstract International
Electronic Location and Access  
로그인을 한후 보실 수 있는 자료입니다.
Control Number  
joongbu:642920

MARC

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■1001  ▼aSchwarz,  Tanner.
■24510▼aInvestigations  of  the  Root-Knot  Nematode  Meloidogyne  Enterolobii  in  North  Carolina:  Hosts  and  Resistance,  Management,  and  Pathogen  Interactions▼h[electronic  resource]
■260    ▼a[S.l.]▼bNorth  Carolina  State  University.  ▼c2023
■260  1▼aAnn  Arbor▼bProQuest  Dissertations  &  Theses▼c2023
■300    ▼a1  online  resource(184  p.)
■500    ▼aSource:  Dissertations  Abstracts  International,  Volume:  85-05,  Section:  B.
■500    ▼aAdvisor:  Schultheis,  Jonathan;Gorny,  Adrienne.
■5021  ▼aThesis  (Ph.D.)--North  Carolina  State  University,  2023.
■506    ▼aThis  item  must  not  be  sold  to  any  third  party  vendors.
■520    ▼aMeloidogyne  enterolobii  is  a  devastating  and  highly  impactful  species  of  root-knot  nematode  (RKN).  Its  ability  to  infect  a  broad  range  of  host  plants  and  overcome  RKN  resistance  genes  has  threatened  crop  production.  Despite  its  characterization  in  1983,  there  are  knowledge  gaps  about  biology,  plant  resistant  genotypes,  and  pathogen  interactions  of  M.  enterolobii.  Meloidogyne  enterolobii  is  considered  highly  aggressive,  causing  more  severe  symptomology  than  other  RKN  species,  although  factors  contributing  to  the  aggression  are  relatively  unknown.  The  proportion  of  eggs  that  successfully  hatch  into  second-stage  juveniles  were  evaluated  among  three  RKN  species,  M.  enterolobii,  M.  hapla,  and  M.  incognita  race  4  within  in  vitro  laboratory  experiments.  It  was  found  that  M.  enterolobii  had  a  significantly  greater  proportion  of  hatched  eggs  compared  to  the  other  two  species,  while  M.  incognita  had  the  lowest  proportion.  Based  on  these  data,  it  is  hypothesized  that  M.  enterolobii  may  possess  a  biological  advantage  of  significantly  increased  egg  hatching  when  compared  to  M.  incognita  and  M.  hapla,  potentially  leading  to  the  reported  aggressiveness  and  severity  of  symptoms  observed  of  M.  enterolobii.Nematode-resistant  plant  genotypes  are  an  effective,  environmentally  sustainable,  and  cost-efficient  tool  for  managing  disease,  yet  M.  enterolobii  is  capable  of  infecting  currently  deployed  sweetpotato  and  soybean  genotypes.  Therefore,  new  sources  of  resistance  are  needed.  Potential  resistance  to  M.  enterolobii  was  evaluated  in  51  diverse  sweetpotato  genotypes,  72  Glycine  soja  and  44  Glycine  max  soybean  genotypes  in  greenhouse  bioassay  experiments.  Twelve  sweetpotato  genotypes  and  five  G.  soja  soybean  genotypes  were  identified  as  resistant,  while  none  of  the  G.  max  genotypes  were  resistant.  These  results  add  to  the  knowledge  of  host  status  and  potential  natural  resistance  to  M.  enterolobiiin  sweetpotato  and  soybean  to  improve  management  and  aid  plant  breeding  efforts.Weeds  that  compete  with  crops  can  host  RKN,  acting  as  a  source  of  nematode  inoculum  in  a  field  and  further  damaging  crops.  The  host  status  of  ten  weed  species  commonly  found  in  North  Carolina  was  determined  to  the  RKN  species  M.  enterolobii  and  M.  incognitarace  4  in  a  greenhouse  bioassay.  Differential  host  status  of  the  weeds  to  these  RKN  species  were  documented.  These  results  highlight  the  necessity  of  managing  RKN  through  controlling  weeds  in  order  to  protect  crops.Virulent  isolates  of  RKN  have  been  reported  to  overcome  plant  resistance  through  either  naturally  occurring  populations  or  selection  due  to  continuous  exposure  to  a  resistance  gene.  Yet  it  is  unknown  if  this  selection  for  virulence  may  occur  among  M.  enterolobii  populations.  Phenotypically  distinct  isolates  of  M.  enterolobii  that  reproduce  on  sweetpotato  cultivars  previously  regarded  as  resistant  were  characterized  at  three  time  points  across  diverse  sweetpotato  germplasm.  Isolates  of  M.  enterolobiithat  were  previously  passed  through  certain  resistant  sweetpotato  genotypes  developed  into  'break  isolates',  causing  infection  and  root  galling.  This  study  aids  to  better  understand  host-nematode  interactions  and  begin  assessing  risk  of  resistance  breaking  strains  in  the  field.
■590    ▼aSchool  code:  0155.
■650  4▼aInfections.
■650  4▼aFungi.
■650  4▼aWeeds.
■650  4▼aPathogens.
■650  4▼aFeeds.
■650  4▼aAgricultural  production.
■650  4▼aFood.
■650  4▼aFlowers  &  plants.
■650  4▼aCrop  rotation.
■650  4▼aTomatoes.
■650  4▼aBacteria.
■650  4▼aCardiovascular  disease.
■650  4▼aPlant  resistance.
■650  4▼aGermplasm.
■650  4▼aEggs.
■650  4▼aCrop  diseases.
■650  4▼aGenotype  &  phenotype.
■650  4▼aSoybeans.
■650  4▼aVirulence.
■650  4▼aNematodes.
■650  4▼aAgriculture.
■650  4▼aAgronomy.
■650  4▼aBotany.
■650  4▼aGenetics.
■650  4▼aMedicine.
■650  4▼aPlant  pathology.
■650  4▼aPlant  sciences.
■650  4▼aPublic  health.
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■690    ▼a0309
■690    ▼a0369
■690    ▼a0564
■690    ▼a0480
■690    ▼a0479
■690    ▼a0573
■71020▼aNorth  Carolina  State  University.
■7730  ▼tDissertations  Abstracts  International▼g85-05B.
■773    ▼tDissertation  Abstract  International
■790    ▼a0155
■791    ▼aPh.D.
■792    ▼a2023
■793    ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T16935193▼nKERIS▼z이  자료의  원문은  한국교육학술정보원에서  제공합니다.
■980    ▼a202402▼f2024

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