Sex, secondary compounds and asymmetry. Effects on plant–herbivore interaction in a dioecious shrub

Bañuelos, María-José; Sierra, Marta; Obeso, J. R.

doi:10.1016/j.actao.2004.01.001

Cited by 41 publications

(28 citation statements)

References 38 publications

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“…For example, female plants invest more in reproduction (flowers and seeds) than males (only flowers) (Obeso 2002); it has, therefore, been hypothesized that females invest more in defensive traits and less in vegetative growth compared to male plants (Lloyd and Webb 1977). These intersexual differences in resource allocation have been confirmed for many, but not all investigated plant species (e.g., Bañuelos et al 2004, Maldonado-López et al 2014. Not surprisingly, intersexual differences have proved important for herbivores, and their identification has spurred a flurry of studies on sex-biased herbivory in dioecious plants over the last three decades (reviewed by Boecklen and Hoffman 1993, Å gren et al 1999, Ashman 2002, Cornelissen and Stiling 2005, Avila-Sakar and Romanow 2012.…”

Section: Introductionmentioning

confidence: 78%

“…Not surprisingly, intersexual differences have proved important for herbivores, and their identification has spurred a flurry of studies on sex-biased herbivory in dioecious plants over the last three decades (reviewed by Boecklen and Hoffman 1993, Å gren et al 1999, Ashman 2002, Cornelissen and Stiling 2005, Avila-Sakar and Romanow 2012. These studies convincingly show that plant sex often controls herbivory and herbivore abundance from the bottom up, through intersexual differences in host plant quality, e.g., leaf size (Boecklen et al 1990) and chemical compounds (Bañuelos et al 2004).…”

Section: Introductionmentioning

confidence: 90%

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Plant‐sex‐biased tritrophic interactions on dioecious willow

2014

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Abstract. Plant sex effects on herbivores are well studied, but little is known about these effects on predators and predator-herbivore dynamics. Here we take a holistic approach to study, simultaneously, plant sex effects on herbivore and predator preference and performance, as well as population densities and predation pressure in the field. For dioecious Salix cinerea (grey willow) we found that male plants represented higher host plant quality than females for an omnivorous predator (Anthocoris nemorum, common flower bug), while host plant quality for its herbivorous prey (Phratora vulgatissima, blue willow beetle) was not sex-biased. The herbivore strongly preferred the host plant sex (female) that was suboptimal for the predator, which in turn followed its prey to female plants, leading to plant-sex-biased predation. These results provide new insight into the far-reaching effects of plant sex on insect communities, and open up novel opportunities for improving biocontrol of the herbivore in Salix short rotation coppice.

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Section: Introductionmentioning

confidence: 78%

Section: Introductionmentioning

confidence: 90%

Plant‐sex‐biased tritrophic interactions on dioecious willow

2014

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“…However, the relationship between FA and herbivory is not clear in the literature. While some studies show positive relationships (Møller 1995(Møller , 1996 2003; Stiling 2011, 2005), others show no relationship (Ban˜uelos et al 2004;Dı´az et al 2004;Telhado et al 2010). Differences in plant chemistry, plant age, environmental conditions, and enemy free-space have been suggested as possible causes for these differences (Lempa et al 2000;Cornelissen et al 2003;Ban˜uelos et al 2004;Cornelissen and Stiling 2005;Cuevas-Reyes et al 2011a, 2011b.…”

Section: Discussionmentioning

confidence: 99%

“…In some studies, leaf FA is positively related with the levels of herbivory suggesting that leaf FA serves as an indicator of plant stress as result of herbivore attack (e.g. Lempa et al 2000;Cuevas-Reyes et al 2011a), while in other studies no relationship has been found (Ban˜uelos et al 2004;Dı´az et al 2004;Telhado et al 2010). Differences in environmental conditions, enemy-free space, plant chemistry, and plant age have been suggested as possible causes for these differences (Ban˜uelos et al 2004;Cornelissen and Stiling 2005;Cornelissen et al 2003;Lempa et al 2000).…”

Section: Introductionmentioning

confidence: 99%

Fluctuating asymmetry and herbivory in two ontogenetical stages ofChamaecrista semaphorain restored and natural environments

Costa

Azevedo

Braga

et al. 2013

Journal of Plant Interactions

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Reintroduced environments represent stressful conditions to plants that can be observed in different ways. We evaluated the relationships between fluctuating asymmetry (FA), herbivory, and plant ontogeny of Chamaecrista semaphora (Fabaceae) under natural and restored habitat conditions. The patterns of leaf FA and herbivory by folivorous insects (chewing) on saplings and mature plants in each habitat were determined. No relationship was found between FA and herbivory on the two ontogenetic stages in both environments, suggesting that FA did not represent an indicator of stress. The frequency and amount of leaf area removed by folivores were higher in saplings compared to adult plants under the natural habitat, while the opposite trend was observed on restored habitat for adult plants. The restored habitat did not represent an environmental stress condition to C. semaphora, indicating that this endemic plant may represent a good candidate to restoration programs in harsh environments. However, we observed great differences in leaf FA and herbivory among individuals within habitats. Knowledge on plant quality, competition, physiology, and interactions with natural enemies are highly needed to support long lasting programmes on restoration of harsh environments.

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“…Predation can also be affected by plant sex (Kabir et al, 2014;Mooney et al, 2012), and studies on its potential utility in IPM programs including dioecious crops are therefore merited. Previous studies have shown that wild male and female plants can differ with respect to both resistance and rewarding traits (Bañuelos et al, 2004;Boecklen et al, 1990;Bullock, 1984;Pollard and Briggs, 1984). In concert with other types of trait variation, sex ratios various types of trait variation of crops could therefore be manipulated in domesticated plants to improve crop protection.…”

Section: Introductionmentioning

confidence: 99%

Plant sex effects on insect herbivores and biological control in a Short Rotation Coppice willow

et al. 2017

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Tritrophic interactions that are investigated in the studied system: 1. Herbivory by the herbivore (Phratora vulgatissima), 2. Predation by the omnivore (Anthocoris nemorum) 3. Herbivory by the omnivore, 4. Plant (Salix viminalis) sex effects on the herbivore and its herbivory, 5. Plant sex effects on the omnivore and its herbivory, 6. Plant sex effects on predation. A R T I C L E I N F O A B S T R A C TIn the wild, plant sex can affect plant-herbivore interactions and higher trophic levels, including natural enemies of the herbivores. However, the possibility of manipulating plant sex to improve biological control and reduce herbivory in domesticated dioecious crops remains unexplored. The dioecious bioenergy crop, Salix viminalis, is often planted in monoclonal, and thus monosexual, fields. We investigated whether using plant clones of either sex, or mixing plants of both sexes, reduced the performance and abundance of the herbivorous pest insect Phratora vulgatissima and its main natural enemy, Anthocoris nemorum, and whether predation was affected. The herbivore laid more eggs, and the predator survived longer, on female plants in the lab. However, these effects did not translate into differences in predation rates in laboratory experiments or differential insect abundances on plants of either sex or plantation sex composition in the field. Plant genotype did have a significant effect on insect abundances, but this was due to plant traits other than sex. The results indicate that manipulating plant MARKsex will not lead to improved biological control or reduced insect herbivory in S. viminalis energy forestry, but suggest that a focus on plant genotypic differences offers promise for improving management practices.

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Sex, secondary compounds and asymmetry. Effects on plant–herbivore interaction in a dioecious shrub

Cited by 41 publications

References 38 publications

Plant‐sex‐biased tritrophic interactions on dioecious willow

Plant‐sex‐biased tritrophic interactions on dioecious willow

Fluctuating asymmetry and herbivory in two ontogenetical stages ofChamaecrista semaphorain restored and natural environments

Plant sex effects on insect herbivores and biological control in a Short Rotation Coppice willow

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