Natural Increases in Parasitoid and Predator Abundances and a Shift in Species Dominance Point to Improved Suppression of the Sorghum Aphid Since Its Invasion into North America DOI Creative Commons

Pius A. Bradicich,

Ashleigh M. Faris, John W. Gordy

et al.

Insects, Journal Year: 2024, Volume and Issue: 15(12), P. 958 - 958

Published: Dec. 2, 2024

Melanaphis sorghi (Theobald) (Hemiptera: Aphididae), commonly called the sorghum aphid, is an invasive pest of (Sorghum bicolor) (L.) in North America. It was first observed 2013 along Gulf Coastal Plains ecoregion Texas, Louisiana (USA), and Mexico, where it quickly established itself as economically important within a few years. This contains complex aphid natural enemies, including both predators parasitoids. In decade since its invasion, indicators increased suppression across six years five locations from south to north Texas were follows: (1) abundances trending downwards years, (2) overall enemy upwards during same time period, (3) key parasitoid coccinellid species increasing dominance. Two taxa, Aphelinus nigritus (Howard) (Hymenoptera: Aphelinidae) coccinellids (Coleoptera: Coccinellidae), likely responsible for majority pest’s suppression. light these findings, importance monitoring stewarding enemies insect pests discussed part comprehensive strategy measure reduce impact invasion large-scale agroecosystems.

Language: Английский

Impaired Brown midrib12 function orchestrates sorghum resistance to aphids via an auxin conjugate indole‐3‐acetic acid–aspartic acid DOI Creative Commons
Sajjan Grover, De‐Fen Mou, Kumar Shrestha

et al.

New Phytologist, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 4, 2024

Lignin, a complex heterogenous polymer present in virtually all plant cell walls, plays critical role protecting plants from various stresses. However, little is known about how lignin modifications sorghum will impact defense against sugarcane aphids (SCA), key pest of sorghum. We utilized the brown midrib (bmr) mutants, which are impaired monolignol synthesis, to understand mechanisms SCA. found that loss Bmr12 function and overexpression (OE) provided enhanced resistance susceptibility SCA, respectively, as compared with wild-type (WT; RTx430) plants. Monitoring aphid feeding behavior indicated SCA spent more time reaching first sieve element phase on bmr12 RTx430 Bmr12-OE A combination transcriptomic metabolomic analyses revealed displayed altered auxin metabolism upon infestation specifically, elevated levels conjugate indole-3-acetic acid-aspartic acid (IAA-Asp) were observed Furthermore, exogenous application IAA-Asp restored plants, artificial diet trial bioassays associated Our findings highlight molecular underpinnings contribute bmr12-mediated

Language: Английский

Citations

3
Crop Science special issue: International Year of Millets DOI
Ignacio A. Ciampitti, Ramasamy Perumal, O. P. Yadav

et al.

Crop Science, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 17, 2024

Language: Английский

Citations

0
Variation in Sorghum Aphid (Melanaphis sorghi)1 Populations Translates into Life History Traits on Sorghum-Sudangrass (Sorghum ´ drummondii) DOI
Neetu Khanal, Christopher J. Vitek, Rupesh Kariyat

et al.

Southwestern Entomologist, Journal Year: 2024, Volume and Issue: 49(4)

Published: Dec. 2, 2024

El pulgón de sorgo (PS; Melanaphis sorghi Theobald) es una nueva plaga invasora en sorgo, reportada por primera vez los Estados Unidos 2013. Desde entonces el uso agentes químicos y plaguicidas ha aumentado, causando diferencias a nivel las poblaciones del PS, apuntando al posible surgimiento nuevos biotipos. La mayoría investigaciones con PS se han enfocado comparaciones entre daño causado caña azúcar, otras plantas huéspedes, lo cual puede no haber detectado que pudieran existir sorgo. Para discernir estos biotipos, recolectamos tres -con como planta huésped- diferentes sitios Valle Río Grande sur Texas, Unidos. Examinamos posibles variaciones sus características vida, su comportamiento alimenticio usando electrical penetration graphs (gráficas penetración eléctricas, GPE), defensas huésped (sorgo-sudangrass) después la infección PS. Nuestros resultados sobre vida mostraron significativas tasa reproducción examinadas. Sin embargo, hubo GPE. También encontramos cantidad cera epicuticular sorgo-sudangrass varió significativamente mientras polifenol oxidasa varió. En conclusión demostramos traducen específicas interacción plantainsecto, pero investigación más extensa requiere para entender completamente presencia biotipos

Citations

0
Natural Increases in Parasitoid and Predator Abundances and a Shift in Species Dominance Point to Improved Suppression of the Sorghum Aphid Since Its Invasion into North America DOI Creative Commons

Pius A. Bradicich,

Ashleigh M. Faris, John W. Gordy

et al.

Insects, Journal Year: 2024, Volume and Issue: 15(12), P. 958 - 958

Published: Dec. 2, 2024

Melanaphis sorghi (Theobald) (Hemiptera: Aphididae), commonly called the sorghum aphid, is an invasive pest of (Sorghum bicolor) (L.) in North America. It was first observed 2013 along Gulf Coastal Plains ecoregion Texas, Louisiana (USA), and Mexico, where it quickly established itself as economically important within a few years. This contains complex aphid natural enemies, including both predators parasitoids. In decade since its invasion, indicators increased suppression across six years five locations from south to north Texas were follows: (1) abundances trending downwards years, (2) overall enemy upwards during same time period, (3) key parasitoid coccinellid species increasing dominance. Two taxa, Aphelinus nigritus (Howard) (Hymenoptera: Aphelinidae) coccinellids (Coleoptera: Coccinellidae), likely responsible for majority pest’s suppression. light these findings, importance monitoring stewarding enemies insect pests discussed part comprehensive strategy measure reduce impact invasion large-scale agroecosystems.

Language: Английский

Citations

0