Maize plants produce direct resistance elicited by Tetranychus urticae Koch (Acari: Tetranychidae)

Paulo, Paula Daiana de; Lima, C. G. B.; Dominiquini, A. B.; Fadini, Marcos Antonio Matiello; Mendes, S. M.; Marinho, Cidália Gabriela Santos

doi:10.1590/1519-6984.19915

Cited by 4 publications

(5 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The number of dead adult females was higher in pre-infested plants than in the clean plants ( Figure 1D, χ 2 =10.9, df=58, P<0.001). As demonstrated in the first part of the present investigation and in previous investigations SCHMELZ, 1996;FADINI et al, 2010a;PAULO et al, 2017), the pre-infestation of non-Bt maize plants by T. urticae reduced the survival and reproduction of the conspecific adult females, and it also reduces the survival of immatures. This suggests that maize plants which have undergone pre-infested by T. urticae altered the survival pattern of conspecific adult forms, reducing the performance of the population as a result of direct defense induction.…”

Section: Contentssupporting

confidence: 83%

Direct defense elicited by Tetranychus urticae koch (Acari: Tetranychidae) in Bt maize plants

Paulo¹,

Fadini²,

Marinho³

et al. 2019

Biosci. J.

View full text Add to dashboard Cite

Direct and indirect induced defense mechanisms against herbivores can be manifested in maize (Zea mays L.) plants. Furthermore, there are constitutive defenses in which plants continuously express resistance traces. In recent decades has increased the production of transgenic maize plants that constitutively express proteins with insecticide action (Bt maize). The increase of the use of transgenic maize cultivars with the Bt (Bacillus thuringiensis) gene demand studies that evaluate the impacts caused by this technology on plant defense mechanisms and their impact on non-targeted organisms, as the two-spotted spider mite Tetranychus urticae Koch (Acari: Tetranychidae). We tested the hypothesis that Bt maize plants (expressing Cry1F protein) would be capable of inducing direct defenses to T. urticae after being attacked by these mites. Thus, we used plants of a commercial maize hybrid (30F35 Hx-expressing Cry1F protein) and plants of its respective non-Bt isogenic line (control). We compared the survival and reproductive performances of T. urticae on plants of both lines that were previously infested with conspecifics and on plants that did not suffer pre-infestations. The previous infestation of maize plants by T. urticae did not impacted the survival and reproductive abilities of adult and immature forms of the conspecific in both genotypes. These results suggest that, Bt maize expressing the Cry1F insecticidal protein, does not interfere in the induction of direct defense by the T. urticae when compared with conventional maize plants.

show abstract

Section: Contentssupporting

confidence: 83%

Direct defense elicited by Tetranychus urticae koch (Acari: Tetranychidae) in Bt maize plants

Paulo¹,

Fadini²,

Marinho³

et al. 2019

Biosci. J.

View full text Add to dashboard Cite

show abstract

“…Therefore, these results show that pre-infestation with T. urticae cannot induce expression of direct defense compounds in Bt or conventional maize. Paulo et al (2018) found that infestation of conventional maize plants by T. urticae reduced the conspecific adult survival. However, they suggested that additional spectrometry analysis on infested and uninfested plants by T. urticae is necessary to confirm the hypothesis of induction of direct defenses in conventional maize.…”

Section: Discussionmentioning

confidence: 97%

“…For example, the two-spotted spider mite, Tetranychus urticae Koch (Acari: Tetranychidae), feeds on Bt maize. However, T. urticae is a nontargeted organism to Bt maize protein, and perhaps it should be considered the risk of spider mites to become a more relevant pest to the Bt crops (Paulo et al 2018). On another hand, the fall armyworm, Spodoptera frugiperda (J.E.…”

mentioning

confidence: 99%

“…A question that arises is, in what situation do plants produce those defense mechanisms, such as when plants are attacked by secondary pests? In a study conducted by Paulo et al (2018) to determine if maize plants would develop direct resistance to T. urticae, results showed that the conspecific survival of adult T. urticae females on infested maize plants was reduced, thus suggesting direct induced maize resistance to T. urticae. However, at this time there is no conclusive information regarding induced defenses in maize plants attacked by multiple herbivores.…”

mentioning

confidence: 99%

See 1 more Smart Citation

Multiple Infestations Induce Direct Defense of Maize to Tetranychus urticae (Acari: Tetranychidae)

Franzin

Botti

Fadini

et al. 2020

Florida Entomologist

View full text Add to dashboard Cite

show abstract

“…They documented performance from 0.2 to 1.4 E/F/D in four days. While Paoulo et al [ 36 ] found no difference in the number of eggs laid by T. urticae on maize plants reinfested with the spider mite compared to plants with mites. They concluded that there is a direct resistance induction of Z. mays to T. urticae .…”

Section: Discussionmentioning

confidence: 99%

Evaluation of Resistance of Eleven Maize Races (Zea mays L.) to the Red Spider Mite (Tetranychus merganser, Boudreaux)

Rocandio‐Rodríguez

Torres-Castillo

Juárez-Aragón

et al. 2022

Plants

View full text Add to dashboard Cite

At least 59 maize races (Zea mays L.) have been registered in Mexico. The feeding damage caused by insects and mites to maize crops generates up to ~30% of maize yield losses. Spider-mite-resistant plants are needed. The red spider mite, Tetranychus merganser Boudreaux (Acari: Tetranychidae), is distributed in the United States, China, Mexico, and Thailand. It is considered a potential pest in Mexican agriculture. The aim of this study was to evaluate the resistance mechanisms (antixenosis and antibiosis) of 11 native maize populations, representative of each race of maize grown in Tamaulipas, Mexico, to T. merganser under laboratory conditions. The aim was also to obtain information on the chemical composition and some morphological characteristics of these maize races and to identify resistant maize races for incorporation into a breeding program. Antixenosis was assessed by non-preference for oviposition and feeding. Antibiosis was measured by growth rate (ri). The presence of secondary metabolites in the 11 maize races were different. In the 11 maize races, quantitative analysis of total phenol concentration, total flavonoid concentration, and antioxidant capacity were significantly different. The multivariate analysis of variance showed that there is evidence of antixenosis noted by maize race differences in egg laying and percentage feeding damage but not of antibiosis noted by growth rate. Red spider mites laid significantly more eggs on the Celaya (24 h: 25.67 ± 17.04, 48 h: 42.67 ± 26.86, 72 h: 49.33 ± 28.54) race than on Raton (24 h: 7.00 ± 5.00, 48 h: 12.67 ± 8.02, 72 h: 14.67 ± 9.29) and Elotes Occidentales × Tuxpeño (24 h: 9.67 ± 5.85, 48 h: 15.33 ± 10.69, 72 h: 17.67 ± 10.97) races. However, the growth rate and mortality of T. merganser in the 11 corn races were similar. The Vandeño (24 h: 11.67 ± 2.89, 48 h: 27.67 ± 7.64, 72 h: 30.00 ± 18.03) and Tabloncillo × Tuxpeño (24 h: 18.33 ± 7.64, 48 h: 25.00 ± 8.66, 72 h: 25.00 ± 8.66) races were the most resistant to red spider mite damage, whereas the most susceptible race was Celaya (24 h: 26.67 ± 15.28, 48 h: 48.33 ± 29.30, 72 h: 65.00 ± 30.00). Further analysis by PCA at 24, 48, and 72 h found the Celaya race positively correlated to growth rate and oviposition of T. merganser and to a lesser extent with the percentage of feeding damage, suggesting that the Celaya race was most susceptible to T. merganser. At 24 h, the Vandeño race was most resistant, given a negative correlation to growth rate and oviposition by T. merganser. The PCA at 48 and 72 h noted the Elotes Occidentales × Tuxpeño race was most resistant to red spider mite, with negative relationships to growth rate and oviposition and, to a lesser extent, to feeding damage. This resistance is due to the differences in both its morphological characteristics and the secondary metabolites present in their leaves.

show abstract

Maize plants produce direct resistance elicited by Tetranychus urticae Koch (Acari: Tetranychidae)

Cited by 4 publications

References 24 publications

Direct defense elicited by Tetranychus urticae koch (Acari: Tetranychidae) in Bt maize plants

Direct defense elicited by Tetranychus urticae koch (Acari: Tetranychidae) in Bt maize plants

Multiple Infestations Induce Direct Defense of Maize to Tetranychus urticae (Acari: Tetranychidae)

Evaluation of Resistance of Eleven Maize Races (Zea mays L.) to the Red Spider Mite (Tetranychus merganser, Boudreaux)

Contact Info

Product

Resources

About