Interaction of Fusarium Wilt Race 4 with Root-Knot Nematode Increases Disease Severity in Cotton

Fusarium wilt, caused by Fusarium oxysporum f. sp. vasinfectum, is a severe disease of cotton (Gossypium spp.). Strains of the wilt pathogen in the United States, such as race 1, require the presence of nematodes such as southern root-knot nematode (Meloidogyne incognita) to cause appreciable diseas...

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Veröffentlicht in:Plant disease. - 1997. - 106(2022), 10 vom: 14. Okt., Seite 2558-2562
1. Verfasser: Wagner, Tanya A (VerfasserIn)
Weitere Verfasser: Duke, Sara E, Davie, Shayla M, Magill, Clint, Liu, Jinggao
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2022
Zugriff auf das übergeordnete Werk:Plant disease
Schlagworte:Journal Article Fusarium oxysporum f. sp. vasinfectum Fusarium wilt disease complex Meloidogyne incognita VCG0114 cotton race 4 root-knot nematode Potassium Iodide 1C4QK22F9J
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520 |a Fusarium wilt, caused by Fusarium oxysporum f. sp. vasinfectum, is a severe disease of cotton (Gossypium spp.). Strains of the wilt pathogen in the United States, such as race 1, require the presence of nematodes such as southern root-knot nematode (Meloidogyne incognita) to cause appreciable disease. The exception is the race 4 strain of the wilt pathogen, which can attack cotton without concomitant infection by plant-parasitic nematodes and was first identified in California in 2001 and in Texas and New Mexico since 2017. The effects of the interaction between M. incognita and race 1 or race 4 on wilt severity and nematode reproduction on two Gossypium hirsutum cultivars, Acala 44 and FM 966, and a G. barbadense cultivar, Pima S-4, were directly compared in growth chamber assays. All three cultivars were susceptible to M. incognita. Suppression of nematode reproduction by the wilt pathogen was detected only for race 4 on all three cultivars on a per plant basis but not on a per gram root tissue basis. The control, M. incognita alone, and race 1 alone treatments caused no symptoms. Inoculation with race 1 and M. incognita caused moderate wilt symptoms in 'Acala 44' and 'FM 966' and mild symptoms in 'Pima S-4'. However, race 4 treatment caused severe wilt in 'Pima S-4' and moderate wilt severity in 'Acala 44' and 'FM 966'. The symptom severity of 'Acala 44' and 'FM 966' further increased in the presence of M. incognita. Thus, race 4 is not only capable of causing wilt in the absence of M. incognita but can also interact with the nematode to further increase disease severity. Though control of wilt caused by race 1 can be achieved mainly through breeding for nematode resistance, it will be imperative to incorporate both southern root-knot nematode and race 4 resistance to effectively control the disease should race 4 expand into southern root-knot nematode-infested fields 
650 4 |a Journal Article 
650 4 |a Fusarium oxysporum f. sp. vasinfectum 
650 4 |a Fusarium wilt disease complex 
650 4 |a Meloidogyne incognita 
650 4 |a VCG0114 
650 4 |a cotton 
650 4 |a race 4 
650 4 |a root-knot nematode 
650 7 |a Potassium Iodide  |2 NLM 
650 7 |a 1C4QK22F9J  |2 NLM 
700 1 |a Duke, Sara E  |e verfasserin  |4 aut 
700 1 |a Davie, Shayla M  |e verfasserin  |4 aut 
700 1 |a Magill, Clint  |e verfasserin  |4 aut 
700 1 |a Liu, Jinggao  |e verfasserin  |4 aut 
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773 1 8 |g volume:106  |g year:2022  |g number:10  |g day:14  |g month:10  |g pages:2558-2562 
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