Crop-wild sunflower hybridization can mediate weediness throughout growth-stress tolerance trade-offs

Presotto, Alejandro; Hernández, Fernando; Díaz, Marina Lucía; Fernández-Moroni, Ivana; Pandolfo, Claudio Ezequiel; Basualdo, Jessica; Cuppari, Selva Yanet; Cantamutto, Miguel Ángel; Poverene, María Mónica

doi:10.1016/j.agee.2017.08.003

Cited by 18 publications

(40 citation statements)

References 81 publications

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“…The agrestal BRW (a natural crop-wild hybrid), in general, showed intermediate behavior between the ruderal biotypes and the volunteer in both experiments, which agrees with our previous findings (Casquero et al, 2013;Presotto et al, 2017).…”

Section: Discussionsupporting

confidence: 92%

“…Seeds were sown once in autumn 2014, and the seedling emergence was monitored for two years, in 0.5 m 2 (0.7 m x 0.7 m) plots with 1 m space (aisle) around each plot to minimize uncontrolled movement of seeds between plots. The seed addition density was 1242 seeds m -2 (620 seeds per plot), resembling a low plant density (0.25-0.50 plants m -2 ) in their natural environment (Poverene et al 2009) and, a seed production (3000 seeds per plant) similar to that found under semiarid conditions (Presotto et al 2017). Seeds were dispersed in May 2014, in accordance with the shattering period.…”

Section: Seedling Emergence and Reproductionmentioning

confidence: 57%

“…Ruderal and the agrestal populations were collected in central Argentina: Adolfo Alsina (AAL, S 37°16′, W 62° 59′), Barrow (BRW; S 38°16′, W 60°07′), Colonia Baron (BAR; S 34°47, W 68°15), Diamante (DIA; S 32°03′, W 60°38′) and Río Cuarto (RCU; S 33°09, W 64°20). The agrestal population (BRW) is considered an agrestal biotype because it has been growing in an agricultural field for at least 10 years (Casquero et al, 2013;Presotto et al, 2017) while the remaining populations are considered ruderals because they have been growing in patches in disturbed habitats, such as roadsides, ditches, and fence rows (Poverene et al 2009). Ruderal biotypes were introduced from multiple wild populations from the (Hernández et al 2019) while the agrestal biotype is a natural crop-wild hybrid (Casquero et al 2013;Presotto et al 2017).…”

Section: Plant Materialsmentioning

confidence: 99%

“…The agrestal population (BRW) is considered an agrestal biotype because it has been growing in an agricultural field for at least 10 years (Casquero et al, 2013;Presotto et al, 2017) while the remaining populations are considered ruderals because they have been growing in patches in disturbed habitats, such as roadsides, ditches, and fence rows (Poverene et al 2009). Ruderal biotypes were introduced from multiple wild populations from the (Hernández et al 2019) while the agrestal biotype is a natural crop-wild hybrid (Casquero et al 2013;Presotto et al 2017). In experiment 1 "seeding emergence and reproduction", we used four ruderal biotypes (AAL, BAR, DIA, RCU), the agrestal BRW and the volunteer biotype was the progeny of CAC CL cultivar.…”

Section: Plant Materialsmentioning

confidence: 99%

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Seed bank dynamics of an invasive alien species, Helianthus annuus L.

Presotto

Hernández

Casquero³

et al. 2020

Journal of Plant Ecology

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Aims The ability to form persistent seed banks is one of the best predictors of species’ potential to establish in new ranges. Wild sunflower is native to North America where the formation of persistent seed banks is promoted by disturbance and it plays a key role on the establishment and persistence of native populations. However, the role of the seed banks on the establishment and persistence of invasive populations has not been studied. Here, we evaluated the role of seed bank and disturbance on the establishment and fitness, and seed persistence in the soil in several sunflower biotypes collected in ruderal (wild Helianthus annuus) and agrestal (natural crop–wild hybrid) habitats of Argentina as well as volunteer populations (progeny of commercial cultivars). Methods In a seed-bank experiment, we evaluated emergence, survival to reproduction, survival of emerged seedlings, inflorescences per plant and per plot under disturbed and undisturbed conditions over 2 years; in a seed-burial experiment, we evaluated seed persistence in the soil over four springs (6, 18, 30 and 42 months). Important Findings Overall, seedling emergence was early in the growing season (during winter), and it was promoted by disturbance, especially in the first year. Despite this, the number of inflorescences per plot was similar under both conditions, especially in ruderals. In the second year, emergence from the seed bank was much lower, but the survival rate was higher. In the seed-burial experiment, genetic differences were observed but seeds of ruderals and agrestals persisted up to 42 months while seeds of the volunteer did not persist longer than 6 months. The agrestal biotype showed an intermediate behavior between ruderals and volunteers in both experiments. Our findings showed that wild and crop–wild sunflower can form persistent seed banks outside its native range and that disturbance may facilitate its establishment in new areas.

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Section: Discussionsupporting

confidence: 92%

Section: Seedling Emergence and Reproductionmentioning

confidence: 57%

Section: Plant Materialsmentioning

confidence: 99%

Section: Plant Materialsmentioning

confidence: 99%

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Seed bank dynamics of an invasive alien species, Helianthus annuus L.

Presotto

Hernández

Casquero³

et al. 2020

Journal of Plant Ecology

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“…4 B). The rapid stem elongation and leaf expansion characteristic of sunflower (Presotto et al 2017) could have shaded the feral radish plants and reduced their growth. These results were consistent with higher yield losses in oilseed rape and wheat than in sunflower.…”

Section: Feral Radish Traitsmentioning

confidence: 99%

Interference of feral radish (Raphanus sativus) resistant to AHAS-inhibiting herbicides in oilseed rape, wheat and sunflower crops

Vercellino

Pandolfo

Cantamutto

et al. 2020

Preprint

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Raphanus sativus (feral radish), a cosmopolitan weed, has developed resistance to acetohydroxyacid synthase (AHAS) inhibitor herbicides in several countries of South America. This study reports the effects of season-long interference of several feral radish densities on grain yield and yield components of oilseed rape, wheat and sunflower, and on feral radish traits under field conditions. Feral radish density treatments consisted of 0, 2, 4, 8 and 16 plants m−2 in oilseed rape, 0, 4 and 12 plants m−2 in wheat, and 0, 1.6, 4, 8 and 16 plants m−2 in sunflower. The number of inflorescences per area, seeds per inflorescence and the seed biomass of crops were reduced with increasing feral radish densities. The rectangular hyperbola model revealed yield losses by up to 100 %, 74.4 % and 12.2 % in oilseed rape, wheat and sunflower, respectively. Feral radish seed production ranged from 4,300 to 31,200, and 1000 to 4,700 seeds m−2 in winter crops and sunflower, respectively. Season-long feral radish interference can result in serious economic losses in oilseed rape, wheat and sunflower. The adverse impact of feral radish on the yield of winter and summer crops and the high feral radish seed and pods production suggests the need for the development and implementation of diverse and effective long-term weed management practices.

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The role of intraspecific crop–weed hybridization in the evolution of weediness and invasiveness: Cultivated and weedy radish (Raphanus sativus) as a case study

Vercellino,

Hernández,

Presotto

2023

American J of Botany

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PremiseThe phenotype of hybrids between a crop and its wild or weed counterpart is usually intermediate and maladapted compared to that of their parents; however, hybridization has sometimes been associated with increased fitness, potentially leading to enhanced weediness and invasiveness. Since the ecological context and maternal genetic effects may affect hybrid fitness, they could influence the evolutionary outcomes of hybridization. Here, we evaluated the performance of first‐generation crop–weed hybrids of Raphanus sativus and their parents in two contrasting ecological conditions.MethodsUsing experimental hybridization and outdoor common garden experiments, we assessed differences in time to flowering, survival to maturity, plant biomass, and reproductive components between bidirectional crop–weed hybrids and their parents in agrestal (wheat cultivation, fertilization, weeding) and ruderal (human‐disturbed, uncultivated area) conditions over 2 years.ResultsCrop, weeds, and bidirectional hybrids overlapped at least partially during the flowering period, indicating a high probability of gene flow. Hybrids survived to maturity at rates at least as successful as their parents and had higher plant biomass and fecundity, which resulted in higher fitness compared to their parents in both environments, without any differences associated with the direction of the hybridization.ConclusionsIntraspecific crop–weed hybridization, regardless of the cross direction, has the potential to promote weediness in weedy R. sativus in agrestal and ruderal environments, increasing the chances for introgression of crop alleles into weed populations. This is the first report of intraspecific crop–weed hybridization in R. sativus.

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Crop-wild sunflower hybridization can mediate weediness throughout growth-stress tolerance trade-offs

Cited by 18 publications

References 81 publications

Seed bank dynamics of an invasive alien species, Helianthus annuus L.

Seed bank dynamics of an invasive alien species, Helianthus annuus L.

Interference of feral radish (Raphanus sativus) resistant to AHAS-inhibiting herbicides in oilseed rape, wheat and sunflower crops

The role of intraspecific crop–weed hybridization in the evolution of weediness and invasiveness: Cultivated and weedy radish (Raphanus sativus) as a case study

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