Testing the ‘plant domestication-reduced defense’ hypothesis in blueberries: the role of herbivore identity

Hernández‐Cumplido, Johnattan; Giusti, M. Mónica; Zhou, Yucheng; Kyryczenko-Roth, Vera; Chen, Yolanda H.; Rodriguez‐Saona, Cesar

doi:10.1007/s11829-018-9605-1

Cited by 24 publications

(12 citation statements)

References 34 publications

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“…Similarly, in blueberry ( Vaccinium corymbosum ), a plant in the same genus as cranberry, the gypsy moth performed better on certain plant genotypes over others (i.e. increased weight gain and survival), whereas sparganothis fruitworm did not display a difference in performance (Hernandez‐Cumplido et al ). However, a recent study evaluating sparganothis fruitworm performance on five cranberry varieties did show differences in weight gain, although no differences were reported for larval survival, pupal weights or insect developmental time (McMahan & Guédot ).…”

Section: Discussionmentioning

confidence: 99%

Increased nutrient availability decreases insect resistance in cranberry

Lange

Kyryczenko-Roth

Johnson‐Cicalese

et al. 2019

Agri and Forest Entomology

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1 Herbivorous insects are considered to be a major problem in cranberry (Vaccinium macrocarpon Ait.) production. Spraying chemical pesticides is common practice, although beneficial insects could also be affected. 2 We aimed to strengthen the resistance mechanisms that cranberry plants themselves use to combat insect pests by manipulating available nutrient levels. We hypothesized that cranberry genotypes respond differently from nutrient availability with regard to growth and defence against multiple herbivores. 3 In the present study, six cranberry varieties (i.e. genotypes) were subjected to four different fertilizer rates. In a greenhouse setting, we assessed soil and leaf nitrogen concentrations; weight gain of the native pests spotted fireworm (Choristoneura parallela Robinson), sparganothis fruitworm (Sparganothis sulfureana Clemens) and the invasive pest gypsy moth (Lymantria dispar L.); levels of leaf proanthocyanidins (PACs); and plant growth. 4 The results obtained showed that cranberry varieties differ in their insect resistance qualities, although this depended on the insect species identity; genotypic variation was observed in resistance against the invasive pest L. dispar but not against the two native insect pests. Overall, increased nutrient availability decreased plant resistance to the three herbivores (i.e. increased larval weight gain and reduced PAC levels), regardless of the cranberry genotype. Nutrient availability correlated negatively with PAC levels and positively with herbivore weight gain and plant growth, indicating a potential trade-off between growth and defence. 5 Fertilization management to strengthen insect resistance in cranberry may contribute to the development of more sustainable pest management practices, especially for organic production.

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Section: Discussionmentioning

confidence: 99%

Increased nutrient availability decreases insect resistance in cranberry

Lange

Kyryczenko-Roth

Johnson‐Cicalese

et al. 2019

Agri and Forest Entomology

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“…Gaillard et al (2018) found a stronger reduction in the performance of generalist than specialist herbivore species on wild plants (teosinte) compared to cultivated maize lines. Similarly, Hernandez-Cumplido et al (2018) found that the effect of domestication depends on herbivore identity in the North American perennial crop highbush blueberry (Vaccinium corymbosum L.), such that the invasive chewing herbivore Lymantria dispar L. performed better on domesticated plants compared to wild plants, whereas no effects were found for the native chewing herbivore Sparganothis sulfureana (Clemens). In general, these studies reflect the need to investigate the role of herbivore species identity to get a better understanding of the effects of domestication on plant defenses and herbivore resistance.…”

Section: Introductionmentioning

confidence: 98%

“…Although evidence of the effects of domestication on insect herbivores has accumulated during the last 30 years, there are still gaps in our knowledge. As proposed by the "plant domesticationreduced defense" hypothesis (Gaillard et al, 2018;Hernandez-Cumplido et al, 2018), there is a general assumption that domestication reduces plant defenses (Wink, 1988;Rosenthal and Dirzo, 1997;Benrey et al, 1998;Rodriguez-Saona et al, 2011) due to potential trade-offs between plant defense and reproduction (Rhoades, 1979;Rosenthal and Dirzo, 1997). However, plant responses to domestication are variable and depend mainly on the structure under selection and the approach that researchers use to evaluate resistant traits (Whitehead et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

“…Recently, comparative studies investigated the effects of crop domestication on herbivores with different evolutionary histories with the host plant (Gaillard et al, 2018;Rodriguez-Saona et al, 2019) and from different feeding guilds (Turcotte et al, 2014;Hernandez-Cumplido et al, 2018). Turcotte et al (2014) compared the effect of the domestication process along 29 herbaceous crop species on two generalist herbivores with different feeding habits (sap sucking v/s chewing) and found a negative effect of domestication on the resistance against a chewing herbivore (Spodoptera exigua Hübner), whereas no effect of domestication was observed for a sap-sucking herbivore (Myzus persicae Sulzer).…”

Section: Introductionmentioning

confidence: 99%

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Genotypic Variation in Plant Traits, Chemical Defenses, and Resistance Against Insect Herbivores in Avocado (Persea americana) Across a Domestication Gradient

et al. 2021

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Domestication promotes divergence between wild and cultivated plants. The “plant domestication-reduced defense” hypothesis proposes that cultivated plants have lower chemical defenses and resistance against herbivores than their wild counterparts. Yet, the effects of domestication on the interactions between perennial crops and insect herbivores have not been well-documented. In this study, we hypothesized that domesticated avocado (Persea americana) has lowered resistance against insect herbivores. To test this hypothesis, we measured variation in plant traits (fruit and seed size, seed germination, and plant growth), chemical defenses (total phenolics), and resistance against two leaf-chewing insect herbivores—a specialist (Copaxa multifenestrata) and a generalist (Spodoptera frugiperda)—among seven avocado genotypes across a domestication gradient: wild (ancestral) genotypes, five (intermediate) landraces (“Blanco,” “Lonjas,” “Vargas,” “Zarcoli,” and “Rodolfo”), and the cultivated (modern) “Hass.” Our results showed that seeds from “Hass” have a lower germination rate and slower growth and have shorter fruits and seeds than the landraces and wild genotypes. “Hass” leaves also had lower amounts of total phenolics than the landraces; however, no differences were found between “Hass” and the wild genotypes. There was no effect of genotype on larval mass gained for both herbivores. However, C. multifenestrata had longer larval longevity on “Hass” and the wild genotypes, whereas S. frugiperda larval longevity showed no differences among genotypes. Moreover, C. multifenestrata inflicted more damage on “Hass,” whereas S. frugiperda inflicted more damage on “Lonjas” than on the other genotypes. In general, bigger fruit and seeds were positively correlated with plant size and phenolic content, and total phenolics were positively correlated with S. frugiperda and negatively correlated with C. multifenestrata larval performance. However, despite the genotypic variation in plant traits, phenolic content, and resistance against two herbivores with different levels of specialization, there was no clear support for the “plant domestication-reduced defense” hypothesis in avocado.

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“…(lowbush blueberry). The relatively recent and well-documented history of domestication of Vaccinium species (including cranberry, lingonberry, and bilberry) has rendered the genus a useful model for the study of domestication effects ( Rodriguez-Saona et al, 2011 ; Song and Hancock, 2011 ; Rivera et al, 2015 , 2016 ; Hernandez-Cumplido et al, 2018 ). The history of domestication of highbush and lowbush blueberry dates back to 1908 and 1909, respectively, when the first wild plants were collected from Greenfield, New Hampshire, United States, for cultivation and selective breeding ( Gough, 1993 ).…”

Section: Introductionmentioning

confidence: 99%

Crop Domestication Alters Floral Reward Chemistry With Potential Consequences for Pollinator Health

et al. 2018

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Crop domestication can lead to weakened expression of plant defences, with repercussions for herbivore and pathogen susceptibility. However, little is known about how domestication alters traits that mediate other important ecological interactions in crops, such as pollination. Secondary metabolites, which underpin many defence responses in plants, also occur widely in nectar and pollen and influence plant-pollinator interactions. Thus, domestication may also affect secondary compounds in floral rewards, with potential consequences for pollinators. To test this hypothesis, we chemically analysed nectar and pollen from wild and cultivated plants of highbush blueberry (Vaccinium corymbosum L.), before conducting an artificial diet bioassay to examine pollinator-pathogen interactions. Our results indicated that domestication has significantly altered the chemical composition of V. corymbosum nectar and pollen, and reduced pollen chemical diversity in cultivated plants. Of 20 plant metabolites identified in floral rewards, 13 differed significantly between wild and cultivated plants, with a majority showing positive associations with wild compared to cultivated plants. These included the amino acid phenylalanine (4.5 times higher in wild nectar, 11 times higher in wild pollen), a known bee phagostimulant and essential nutrient; and the antimicrobial caffeic acid ester 4-O-caffeoylshikimic acid (two times higher in wild nectar). We assessed the possible biological relevance of variation in caffeic acid esters in bioassays, using the commercially available 3-O-caffeoylquinic acid. This compound reduced Bombus impatiens infection by a prominent gut pathogen (Crithidia) at concentrations that occurred in wild but not cultivated plants, suggesting that domestication may influence floral traits with consequences for bee health. Appreciable levels of genetic variation and heritability were found for most floral reward chemical traits, indicating good potential for selective breeding. Our study provides the first assessment of plant domestication effects on floral reward chemistry and its potential repercussions for pollinator health. Given the central importance of pollinators for agriculture, we discuss the need to extend such investigations to pollinator-dependent crops more generally and elaborate on future research directions to ascertain wider trends, consequences for pollinators, mechanisms, and breeding solutions.

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Testing the ‘plant domestication-reduced defense’ hypothesis in blueberries: the role of herbivore identity

Cited by 24 publications

References 34 publications

Increased nutrient availability decreases insect resistance in cranberry

Increased nutrient availability decreases insect resistance in cranberry

Genotypic Variation in Plant Traits, Chemical Defenses, and Resistance Against Insect Herbivores in Avocado (Persea americana) Across a Domestication Gradient

Crop Domestication Alters Floral Reward Chemistry With Potential Consequences for Pollinator Health

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