Verticillium dahliae (Verticillium wilt).

2021 ◽  
Author(s):  
Krishna Subbarao
Keyword(s):  
Disease Management ◽  
Verticillium Wilt ◽  
Verticillium Dahliae ◽  
Wilt Resistance ◽  
Commercial Cultivars ◽  
Major Criterion ◽  
Selection For

Abstract Introduction: V. dahliae affects many important crops worldwide and causes economically significant losses in many countries (Pegg and Brady, 2002; Inderbitzin and Subbarao, 2014). History shows that V. dahliae has the potential to evolve new strains that can overcome the resistance in commercial cultivars, particularly in cotton, lettuce, tomato and sunflower. It has also shown that the pathogen can be taken to new areas and cause serious losses (Nachmias and Krikun, 1985). Thus, for many vulnerable crops, selection for wilt resistance remains a major criterion of disease management.

scholarly journals Verticillium dahliae (Verticillium wilt).

2021 ◽  
Author(s):  
Krishna Subbarao
Keyword(s):  
Disease Management ◽  
Verticillium Wilt ◽  
Verticillium Dahliae ◽  
Wilt Resistance ◽  
Commercial Cultivars ◽  
Major Criterion ◽  
Selection For

Abstract V. dahliae affects many important crops worldwide and causes economically significant losses in many countries (Pegg and Brady, 2002; Inderbitzin and Subbarao, 2014). History shows that V. dahliae has the potential to evolve new strains that can overcome the resistance in commercial cultivars, particularly in cotton, lettuce, tomato and sunflower. It has also shown that the pathogen can be taken to new areas and cause serious losses (Nachmias and Krikun, 1985). Thus, for many vulnerable crops, selection for wilt resistance remains a major criterion of disease management.

Genetics, Breeding, and Marker-Assisted Selection for Verticillium Wilt Resistance in Cotton

Crop Science ◽  
2014 ◽  
Vol 54 (4) ◽  
pp. 1289-1303 ◽  
Author(s):  
Jinfa Zhang ◽  
Hui Fang ◽  
Huiping Zhou ◽  
Soum Sanogo ◽  
Zhiying Ma
Keyword(s):  
Verticillium Wilt ◽  
Marker Assisted Selection ◽  
Wilt Resistance ◽  
Verticillium Wilt Resistance ◽  
Selection For

SCREENING SWEET AND HOT PEPPERS FOR VERTICILLIUM WILT RESISTANCE

1962 ◽  
Vol 42 (3) ◽  
pp. 515-520 ◽  
Author(s):  
G. E. Woolliest ◽  
L. G. Denby ◽  
A. S. F. Hanson
Keyword(s):  
Capsicum Annuum ◽  
Verticillium Wilt ◽  
Verticillium Dahliae ◽  
Wilt Resistance ◽  
Verticillium Wilt Resistance ◽  
Local Isolate ◽  
Hot Peppers

A total of 456 varieties and strains of sweet and hot peppers (Capsicum annuum) was screened for resistance to Verticillium wilt by inoculating the roots of seedling plants in a suspension of a local isolate of Verticillium dahliae that had been found to cause severe wilt in susceptible pepper varieties. No accession proved immune; 100 per cent wilt developed in 361, and 70 to 95 per cent in 93. In one accession wilt affected 68 per cent of the plants and in another 46 per cent, the lowest rate of infection that occurred.

Evaluation of Verticillium wilt resistance in commercial cultivars and advanced breeding lines of cotton

Euphytica ◽  
2013 ◽  
Vol 196 (3) ◽  
pp. 437-448 ◽  
Author(s):  
Huiping Zhou ◽  
Hui Fang ◽  
Soum Sanogo ◽  
Sidney E. Hughs ◽  
Don C. Jones ◽  
...  
Keyword(s):  
Verticillium Wilt ◽  
Wilt Resistance ◽  
Breeding Lines ◽  
Verticillium Wilt Resistance ◽  
Commercial Cultivars

scholarly journals Current advances in pathogen-plant interaction between Verticillium dahliae and cotton provide new insight in the disease management

2021 ◽  
Vol 4 (1) ◽  
Author(s):  
Koffi Kibalou PALANGA ◽  
Ruixian LIU ◽  
Qun GE ◽  
Juwu GONG ◽  
Junwen LI ◽  
...  
Keyword(s):  
Biological Control ◽  
Cell Wall ◽  
Disease Management ◽  
Gene Silencing ◽  
Cotton Plant ◽  
Verticillium Wilt ◽  
Verticillium Dahliae ◽  
Fiber Quality ◽  
Phytopathogenic Fungus ◽  
Cotton Production

AbstractVerticillium wilt is the second serious vascular wilt caused by the phytopathogenic fungus Verticillium dahliae Kleb. It has distributed worldwide, causing serious yield losses and fiber quality reduction in cotton production. The pathogen has developed different mechanisms like the production of cell wall degrading enzymes, activation of virulence genes and protein effectors to succeed in its infection. Cotton plant has also evolved multiple mechanisms in response to the fungus infection, including a strong production of lignin and callose deposition to strengthen the cell wall, burst of reactive oxygen species, accumulation of defene hormones, expression of defense-related genes, and target-directed strategies like cross-kingdom RNAi for specific virulent gene silencing. This review summarizes the recent progress made over the past two decades in understanding the interactions between cotton plant and the pathogen Verticillium dahliae during the infection process. The review also discusses the achievements in the control practices of cotton verticillium wilt in recent years, including cultivation practices, biological control, and molecular breeding strategies. These studies reveal that effective management strategies are needed to control the disease, while cultural practices and biological control approaches show promising results in the future. Furthermore, the biological control approaches developed in recent years, including antagonistic fungi, endophytic bacteria, and host induced gene silencing strategies provide efficient choices for integrated disease management.

Verticillium dahliae effector VDAL protects MYB6 from degradation by interacting with PUB25 and PUB26 E3 ligases to enhance Verticillium wilt resistance

2021 ◽  
Author(s):  
Aifang Ma ◽  
Dingpeng Zhang ◽  
Guangxing Wang ◽  
Kai Wang ◽  
Zhen Li ◽  
...  
Keyword(s):  
Disease Resistance ◽  
Verticillium Wilt ◽  
Verticillium Dahliae ◽  
Plant Resistance ◽  
Plant Disease Resistance ◽  
Plant Disease ◽  
Wilt Resistance ◽  
E3 Ligases ◽  
Verticillium Wilt Resistance

Abstract Verticillium wilt is a severe plant disease that causes massive losses in multiple crops. Increasing the plant resistance to Verticillium wilt is a critical challenge worldwide. Here, we report that the hemibiotrophic Verticillium dahliae-secreted Asp f2-like protein VDAL causes leaf wilting when applied to cotton leaves in vitro but enhances the resistance to V. dahliae when overexpressed in Arabidopsis or cotton without affecting the plant growth and development. VDAL protein interacts with Arabidopsis E3 ligases plant U-box 25 (PUB25) and PUB26 and is ubiquitinated by PUBs in vitro. However, VDAL is not degraded by PUB25 or PUB26 in planta. Besides, the pub25 pub26 double mutant shows higher resistance to V. dahliae than the wild-type. PUBs interact with the transcription factor MYB6 in a yeast two-hybrid screen. MYB6 promotes plant resistance to Verticillium wilt while PUBs ubiquitinate MYB6 and mediate its degradation. VDAL competes with MYB6 for binding to PUBs, and the role of VDAL in increasing Verticillium wilt resistance depends on MYB6. Taken together, these results suggest that plants evolute a strategy to utilize the invaded effector protein VDAL to resist the V. dahliae infection without causing a hypersensitive response (HR); alternatively, hemibiotrophic pathogens may use some effectors to keep plant cells alive during its infection in order to take nutrients from host cells. This study provides the molecular mechanism for plants increasing disease resistance when overexpressing some effector proteins without inducing HR, and may promote searching for more genes from pathogenic fungi or bacteria to engineer plant disease resistance.

scholarly journals Selection for Resistance to Verticillium Wilt Caused by Race 2 Isolates of Verticillium dahliae in Accessions of Lettuce (Lactuca sativa L.)

HortScience ◽  
2011 ◽  
Vol 46 (2) ◽  
pp. 201-206 ◽  
Author(s):  
Ryan J. Hayes ◽  
Karunakaran Maruthachalam ◽  
Gary E. Vallad ◽  
Steven J. Klosterman ◽  
Krishna V. Subbarao
Keyword(s):  
Genetic Variation ◽  
Verticillium Wilt ◽  
Verticillium Dahliae ◽  
Partial Resistance ◽  
Disease Incidence ◽  
Greenhouse Experiments ◽  
Complete Resistance ◽  
Race 1 ◽  
Selection For ◽  
Race 2

Verticillium wilt of lettuce caused by Verticillium dahliae can cause severe economic damage to lettuce producers. The pathogen exists as two races (Races 1 and 2) in lettuce, and complete resistance to Race 1 is known. Resistance to Race 2 isolates has not been reported, and production of Race 1-resistant cultivars will likely increase the frequency of Race 2 strains. The objective of this research was to select lettuce accessions for resistance to Race 2 isolates of V. dahliae. Two independent populations totaling 314 randomly sampled PIs were evaluated for Verticillium wilt disease incidence (DI) caused by V. dahliae isolate VdLs17 in one unreplicated and two replicated greenhouse experiments. Selection for PIs with reduced DI was conducted between each experiment and plant stems were plated on semiselective media to identify colonized plants that remained non-symptomatic. No accession with complete resistance was identified, although accessions with partial resistance were selected. Genetic variation for the frequency of V. dahliae-colonized plants that remain symptomless was detected. Four PIs (169511, 171674, 204707, and 226641) were selected for further testing in three replicated greenhouse experiments and demonstrated significantly lower disease incidence than the susceptible control cultivars. The results indicate that lettuce has genetic variation for partial resistance to a Race 2 isolate of V. dahliae. The resistant PIs selected in this research are morphologically diverse, and no dependence between rate of bolting and resistance was found. PIs with partial resistance may be useful for breeding lettuce cultivars with resistance to Race 2 isolates of V. dahliae.

scholarly journals GhKWL1 Upregulates GhERF105 but Its Function Is Impaired by Binding with VdISC1, a Pathogenic Effector of Verticillium dahliae

2021 ◽  
Vol 22 (14) ◽  
pp. 7328
Author(s):  
Yang Chen ◽  
Mi Zhang ◽  
Lei Wang ◽  
Xiaohan Yu ◽  
Xianbi Li ◽  
...  
Keyword(s):  
Gene Expression ◽  
Transgenic Plants ◽  
Gossypium Hirsutum ◽  
Verticillium Wilt ◽  
Verticillium Dahliae ◽  
Defense Response ◽  
Upland Cotton ◽  
Effector Protein ◽  
Positive Regulator ◽  
Its Gene

Verticillium wilt, caused by Verticillium dahliae, is a devastating disease for many important crops, including cotton. Kiwellins (KWLs), a group of cysteine-rich proteins synthesized in many plants, have been shown to be involved in response to various phytopathogens. To evaluate genes for their function in resistance to Verticillium wilt, we investigated KWL homologs in cotton. Thirty-five KWL genes (GhKWLs) were identified from the genome of upland cotton (Gossypium hirsutum). Among them, GhKWL1 was shown to be localized in nucleus and cytosol, and its gene expression is induced by the infection of V. dahliae. We revealed that GhKWL1 was a positive regulator of GhERF105. Silencing of GhKWL1 resulted in a decrease, whereas overexpression led to an increase in resistance of transgenic plants to Verticillium wilt. Interestingly, through binding to GhKWL1, the pathogenic effector protein VdISC1 produced by V. dahliae could impair the defense response mediated by GhKWL1. Therefore, our study suggests there is a GhKWL1-mediated defense response in cotton, which can be hijacked by V. dahliae through the interaction of VdISC1 with GhKWL1.

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