Wind-induced mechanical stimulation increases pest resistance in common bean

Cipollini, Donald F.

doi:10.1007/s004420050211

Cited by 101 publications

(68 citation statements)

References 44 publications

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“…Touching by other leaves within dense canopies can often be elicited by more common environmental factors such as wind and rain (Braam and Davis 1990;Cipollini 1997). Even the gentle touch of insects on trichomes on the leaf surface may activate plant defences against herbivores (Shepherd and Wagner 2007;Peiffer et al 2009).…”

Section: Discussionmentioning

confidence: 99%

Plant response to touch affects the behaviour of aphids and ladybirds

Marković

Glinwood

Olsson

et al. 2014

Arthropod-Plant Interactions

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Touching between leaves of the same plant and/or by neighbouring plants is one of the most common mechanical stimuli to which an individual plant has to respond on a daily basis. The possible ecological implications of a plant's response to touch on plant-insect interactions have not been explicitly investigated. We examined whether plant response to 1 min daily touching over a period of 6 days affects host plant acceptance by the bird cherry-oat aphid Rhopalosiphum padi L. on maize and by the black bean aphid Aphis fabae Scop. on bean, as well as olfactory preference of an aphid predator, seven-spotted ladybird Coccinella septempunctata L. Maize plants responded to touch with significant reduction in plant height, total plant biomass, leaf weight, leaf surface, shoot/ root ratio and specific leaf area (SLA), while bean plants responded with reduced stem height and reduced SLA. Both aphid species showed significantly reduced acceptance of touched plants compared with untouched plants. The two aphid species and male and female ladybirds preferred volatiles from untouched plants over those from touched plants. Volatiles in the headspace of touched and untouched plants were collected and identified. Stepwise discriminant analyses identified (E)-nerolidol and (E)-bcaryophyllene in maize and 6-methyl-5-hepten-2-one and an unidentified sesquiterpene in bean as the best discriminating compounds in the volatile profiles of touched plants. Our study suggests that touch-induced changes in plants can potentially affect host plant selection by aphids and habitat searching by ladybirds. Thus, touch-induced changes in plants may have significant effects at higher trophic levels.

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Section: Discussionmentioning

confidence: 99%

Plant response to touch affects the behaviour of aphids and ladybirds

Marković

Glinwood

Olsson

et al. 2014

Arthropod-Plant Interactions

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“…Fatores mecânicos aos quais as plantas estão susceptíveis, tais como ferimentos, ou mesmo meros estímulos, causados por chuva, granizo, vento, areia, invasão por patógenos e pastagem de herbívoros, também podem influenciar a expressão do metabolismo secundário 5,141,153,154 .…”

Section: Indução Por Estímulos Mecânicos Ou Ataque De Patógenosunclassified

Plantas medicinais: fatores de influência no conteúdo de metabólitos secundários

Gobbo‐Neto¹,

Lopes²

2007

Quím. Nova

913

364

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. do Café, s/n, 14040-903 Ribeirão Preto -SP, BrasilRecebido em 7/7/05; aceito em 11/4/06; publicado na web em 31/10/06 MEDICINAL PLANTS: FACTORS OF INFLUENCE ON THE CONTENT OF SECONDARY METABOLITES. Since secondary metabolites represent a chemical interface between plants and surrounding environment, their syntheses are frequently affected by environmental conditions. Thus, variations in the total content and/or of the relative proportions of secondary metabolites in plants can take place. We review the main environmental factors that can streamline or alter the production or concentration of secondary metabolites in plants. How seasonality, circadian rhythm, developmental stage and age, temperature, water availability, UV radiation, soil nutrients, altitude, atmospheric composition and tissue damage influence secondary metabolism are discussed.Keywords: variations in secondary metabolites; medicinal plants; chemical ecology. INTRODUÇÃODesde o quarto século a.C. existem relatos de normas para a coleta de plantas medicinais. Os carrascos gregos, por ex., coletavam suas amostras do veneno cicuta (Conium maculatum) pela manhã, quando os níveis de coniina são maiores 1,2 . Variações temporais e espaciais no conteúdo total, bem como as proporções relativas de metabólitos secundários em plantas ocorrem em diferentes níveis (sazonais e diárias; intraplanta, inter-e intraespecífica) e, apesar da existência de um controle genético, a expressão pode sofrer modificações resultantes da interação de processos bioquímicos, fisiológicos, ecológicos e evolutivos 3-7 . De fato, os metabólitos secundários representam uma interface química entre as plantas e o ambiente circundante, portanto, sua síntese é freqüentemente afetada por condições ambientais 8 .Os principais fatores que podem coordenar ou alterar a taxa de produção de metabólitos secundários estão expostos a seguir. Deve ser enfatizado, porém, que os estudos sobre influência destes fatores na produção de metabólitos secundários geralmente têm se limitado a um grupo restrito de espécies, predominantemente ocorrentes em regiões temperadas, muitas das quais são comercialmente importantes e podem ter sofrido fortes pressões seletivas antrópicas visando certas características desejadas. Seu comportamento, portanto, nem sempre é representativo de plantas selvagens ou de outros tipos de habitat.Também deve ser ressaltado que, muitas vezes, as variações podem ser decorrentes do desenvolvimento foliar e/ou surgimento de novos órgãos concomitante a uma constância no conteúdo total de metabólitos secundários. Isto pode levar à menor concentração destes metabólitos por diluição, podendo, no entanto, resultar em maior quantidade total, devido ao aumento de biomassa 9,10 . Além disso, alguns dos fatores discutidos apresentam correlações entre si e não atuam isoladamente, podendo influir em conjunto no metabolismo secundário, como por ex.: desenvolvimento e sazonalidade; índice pluviométrico e sazonalidade; temperatura e altitude, entre outros. FATORES QUE INFLUENCIAM O CONTEÚDO DE M...

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“…Third, visiting plants could increase or decrease the release of volatile chemicals that attract or repel herbivores. Nevertheless, the release of volatile chemicals from visitation might be of little importance relative to the effects of other stimuli such as wind (Cipollini 1997). Finally, visitation might cause changes in the composition of the herbivore community.…”

Section: Introductionmentioning

confidence: 99%

Spatial Heterogeneity, Not Visitation Bias, Dominates Variation in Herbivory

Bradley¹,

Damschen²,

Young³

et al. 2003

Ecology

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Abstract. Experiments in ecology can have unintended side effects. Recently, it has been suggested that the act of visiting a plant, inherent to studying herbivory, may alter plant performance and interactions. To evaluate the generality of this inference, we examined plant performance and herbivory on 14 plant species in three geographic regions. Visitation did not significantly affect any of the variables that we measured, including leaf damage, height, biomass, or survivorship, for any species. However, rates of herbivory varied significantly among sites and regions. Thus, our data do not support the generality of visitation impacting estimates of herbivory. We propose that future studies of herbivory will gain more by evaluating spatial heterogeneity in interaction outcomes than by quantifying possible experimenter-caused variation.

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Wind-induced mechanical stimulation increases pest resistance in common bean

Cited by 101 publications

References 44 publications

Plant response to touch affects the behaviour of aphids and ladybirds

Plant response to touch affects the behaviour of aphids and ladybirds

Plantas medicinais: fatores de influência no conteúdo de metabólitos secundários

Spatial Heterogeneity, Not Visitation Bias, Dominates Variation in Herbivory

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