國立虎尾科技大學 |

Investigations of the Root-Knot Nematode Meloidogyne Enterolobii in North Carolina : = Hosts and Resistance, Management, and Pathogen Interactions.

Record Type:	Language materials, manuscript : Monograph/item
Title/Author:	Investigations of the Root-Knot Nematode Meloidogyne Enterolobii in North Carolina :/
Reminder of title:	Hosts and Resistance, Management, and Pathogen Interactions.
Author:	Schwarz, Tanner.
Description:	1 online resource (184 pages)
Notes:	Source: Dissertations Abstracts International, Volume: 85-05, Section: B.
Contained By:	Dissertations Abstracts International85-05B.
Subject:	Infections. -
Online resource:	click for full text (PQDT)
ISBN:	9798380712446

Investigations of the Root-Knot Nematode Meloidogyne Enterolobii in North Carolina : = Hosts and Resistance, Management, and Pathogen Interactions.
Schwarz, Tanner.

Investigations of the Root-Knot Nematode Meloidogyne Enterolobii in North Carolina :Hosts and Resistance, Management, and Pathogen Interactions. - 1 online resource (184 pages)

Source: Dissertations Abstracts International, Volume: 85-05, Section: B.

Thesis (Ph.D.)--North Carolina State University, 2023.

Includes bibliographical references

Meloidogyne 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.

Electronic reproduction.
Ann Arbor, Mich. :
ProQuest,
2024

Mode of access: World Wide Web

ISBN: 9798380712446Subjects--Topical Terms:

882242
Infections.
Index Terms--Genre/Form:

554714
Electronic books.

Investigations of the Root-Knot Nematode Meloidogyne Enterolobii in North Carolina : = Hosts and Resistance, Management, and Pathogen Interactions.
LDR:04703ntm a2200409K 4500 001 1141628
005 20240318062658.5
006 m o d
007 cr mn ---uuuuu
008 250605s2023 xx obm 000 0 eng d
020 $a 9798380712446
035 $a (MiAaPQ)AAI30673723
035 $a (MiAaPQ)NCState_Univ18402041138
035 $a AAI30673723
040 $a MiAaPQ $b eng $c MiAaPQ $d NTU
100 1 $a Schwarz, Tanner. $3 1465532
245 1 0 $a Investigations of the Root-Knot Nematode Meloidogyne Enterolobii in North Carolina : $b Hosts and Resistance, Management, and Pathogen Interactions.
264 0 $c 2023
300 $a 1 online resource (184 pages)
336 $a text $b txt $2 rdacontent
337 $a computer $b c $2 rdamedia
338 $a online resource $b cr $2 rdacarrier
500 $a Source: Dissertations Abstracts International, Volume: 85-05, Section: B.
500 $a Advisor: Schultheis, Jonathan;Gorny, Adrienne.
502 $a Thesis (Ph.D.)--North Carolina State University, 2023.
504 $a Includes bibliographical references
520 $a Meloidogyne 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.
533 $a Electronic reproduction. $b Ann Arbor, Mich. : $c ProQuest, $d 2024
538 $a Mode of access: World Wide Web
650 4 $a Infections. $3 882242
650 4 $a Fungi. $3 580161
650 4 $a Weeds. $3 684064
650 4 $a Pathogens. $3 1413560
650 4 $a Feeds. $3 590532
650 4 $a Agricultural production. $3 1372530
650 4 $a Food. $3 581281
650 4 $a Flowers & plants. $3 1437778
650 4 $a Crop rotation. $3 1211573
650 4 $a Tomatoes. $3 581288
650 4 $a Bacteria. $3 600016
650 4 $a Cardiovascular disease. $3 1437669
650 4 $a Plant resistance. $3 1465533
650 4 $a Germplasm. $3 1465164
650 4 $a Eggs. $3 1029632
650 4 $a Crop diseases. $3 1437713
650 4 $a Genotype & phenotype. $3 1372654
650 4 $a Soybeans. $3 1465438
650 4 $a Virulence. $3 582546
650 4 $a Nematodes. $3 1379476
650 4 $a Agriculture. $3 660421
650 4 $a Agronomy. $3 1027735
650 4 $a Botany. $3 599558
650 4 $a Genetics. $3 578972
650 4 $a Medicine. $3 644133
650 4 $a Plant pathology. $3 1183408
650 4 $a Plant sciences. $3 1179743
650 4 $a Public health. $3 560998
655 7 $a Electronic books. $2 local $3 554714
690 $a 0473
690 $a 0285
690 $a 0309
690 $a 0369
690 $a 0564
690 $a 0480
690 $a 0479
690 $a 0573
710 2 $a ProQuest Information and Learning Co. $3 1178819
710 2 $a North Carolina State University. $3 845424
773 0 $t Dissertations Abstracts International $g 85-05B.
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=30673723 $z click for full text (PQDT)