Responses of soil-grown Scots pine seedlings to experimental warming, moderate nitrogen addition and bark herbivory in a three-year field experiment

Rasheed, Muhammad Usman; Julkunen‐Tiitto, Riitta; Kivimäenpää, Minna; Riikonen, Johanna; Kasurinen, Anne

doi:10.1016/j.scitotenv.2020.139110

Cited by 9 publications

(14 citation statements)

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“…Warming and N addition to soil, alone and in interaction with each other, have been reported to increase root growth from the same experiment (Rasheed et al 2020). Thus, the consistent decreasing effect of these abiotic factors on rhizosphere BVOC emissions implies that seedlings actively invested carbon resources in below-ground growth but not so much in rhizosphere BVOC synthesis.…”

Section: Discussionmentioning

confidence: 81%

“…According to Ghimire et al (2013), Rasheed et al (2017) and Tiiva et al (2019), shoot herbivory can modify the BVOC emissions from below-ground such that the emission rates of some BVOCs may increase, while the emission rates of some BVOCs may decrease. In addition, Rasheed et al (2020) reported two-and three-way interactive effects on shoot and root growth, root-to-shoot ratio, root morphology and mycorrhizal colonization from the same seedlings used in the current BVOCs study; therefore, it is possible warming, moderate N addition and bark herbivory may also show some interactive effects on the rhizosphere BVOC emissions.…”

Section: Introductionmentioning

confidence: 83%

“…The overall average increase in air and soil temperature was 0.5°C and 4.0°C, respectively. The more detailed air humidity, soil moisture and monthly rain sums are published in Rasheed et al (2020). N addition (30 kg N ha − 1 yr − 1 , Yara Peatcare TM, slow release 1, N:P:K, 9:4:5) to the soil was performed in four warmed as well as four ambient temperature plots at the start of each exposure season in 2014-2016.…”

Section: Experimental Site and Field Exposure Systemmentioning

confidence: 99%

“…Bag was enclosing the crown of the seedling inside it and bag was tightened around the base of the stem with a wire. The damaged surface due to herbivory was photographed and the area (mm 2 ) was measured using ImageJ program (version 1.47) from the digital images, and the intensity of feeding damage was calculated as the percentage of bark surface area of the main shoot (Rasheed et al 2020). In 2015 and 2016, the (mean ± standard error) of damaged surface area was (42.7 ± 20.0) mm 2 and (498.5 ± 54.4) mm 2 respectively; and the (proportion ± standard error) of damaged surface area was (0.41 ± 0.17) % and (2.83 ± 0.33) % respectively.…”

Section: Experimental Site and Field Exposure Systemmentioning

confidence: 99%

“…Based on the responses of below-ground BVOCs to warming reported by Rasheed et al (2017) and Tiiva et al (2019), we hypothesize that warming effects on rhizosphere or below-ground BVOC emissions might be no change or minor changes in emission rates. Different below-ground variables have shown highly variable responses to different levels of N addition (12-120 kg N ha − 1 yr − 1 ; Rasheed et al 2017, 2020, Maaroufi et al 2019, Tiiva et al 2019, it is not clear how moderate N (30 kg N ha − 1 y − 1 ) addition will affect rhizosphere BVOC emissions of soil-grown Scots pine seedlings. High N addition (120 kg N ha − 1 y − 1 ) can cause a general decrease in rhizosphere BVOC emissions (Rasheed et al 2017), Hence, we hypothesize that rhizosphere BVOC responses to moderate N addition may decrease in emission rates.…”

Section: Introductionmentioning

confidence: 99%

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Emissions of biogenic volatile organic compounds (BVOCs) from the rhizosphere of Scots pine (Pinus sylvestris) seedlings exposed to warming, moderate N addition and bark herbivory by large pine weevil (Hylobius abietis)

2021

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Aims Biogenic volatile organic compound (BVOC) research has been mostly focused on foliar emissions. In this experiment, the main focus was on rhizosphere BVOC emissions of Scots pine seedlings under changing growth conditions. Methods Soil-growing Scots pines were exposed to increased air (0.5°C) and soil (4.0°C) temperature and N addition (30 kg N ha− 1 yr− 1) for three growing seasons in a field experiment. In addition to these factors, seedlings were exposed to bark herbivory by large pine weevils in two last seasons. Gas-chromatography and mass-spectrometry was used for analyzing the BVOC samples collected from pine rhizosphere. Results Almost 98 % of BVOCs were non-oxygenated monoterpenes (nMTs), 1 % oxygenated monoterpenes (oMTs), 0.5 % sesquiterpenes (SQTs), and 1 % other BVOCs. In both years, there was an interaction of warming, N addition and bark herbivory on rhizosphere BVOC emissions. In 2015, warming and N addition in single exposures decreased oMT emissions, while herbivory in single exposure increased oMT emissions. In 2016, the three-way interaction showed that the effects of warming, N addition and herbivory on BVOCs were mainly detected in single exposures. In 2016, warming decreased nMT, oMT, SQT and other BVOC emissions; N addition decreased oMT and SQT emissions; and herbivory decreased SQT and other BVOC emissions. Conclusions Warming and N addition in single exposures decreased the rhizosphere BVOC emissions. The effect of bark herbivory on BVOC emissions varied between the years from increase to decrease. It seems that under altered growth conditions Scots pine seedlings may reduce carbon investment to rhizosphere BVOCs.

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Section: Discussionmentioning

confidence: 81%

Section: Introductionmentioning

confidence: 83%

Section: Experimental Site and Field Exposure Systemmentioning

confidence: 99%

Section: Experimental Site and Field Exposure Systemmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Emissions of biogenic volatile organic compounds (BVOCs) from the rhizosphere of Scots pine (Pinus sylvestris) seedlings exposed to warming, moderate N addition and bark herbivory by large pine weevil (Hylobius abietis)

2021

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Tree Communication: the Effects of “Wired” and “Wireless” Channels on Interactions with Herbivores

2022

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Purpose of Review Approximately 40 years ago, key papers indicating that volatile chemicals released by damaged plants elicited defense-related changes in their neighbors, brought prominence to the idea of plant communication. These studies were conducted with several tree species and the phenomenon observed was dubbed “talking trees.” Today there is a wealth of evidence supporting the idea that plants can send and receive information both above and belowground. However, while early reports of plant-plant communication concerned trees, the literature is now heavily biased towards herbaceous plants. The purpose of this review is to highlight recent research on tree-tree communication with an emphasis on synthesizing knowledge on the ecological relevance of the process. Recent Findings Aboveground, information is often provided in the form of biogenic volatile organic compounds (VOCs), which are released by both undamaged and damaged plants. The blends of VOCs released by plants provide information on their physiological condition. Belowground, information is conveyed through mycorrhizal networks and via VOCs and chemical exudates released into the rhizosphere. Recent findings have indicated a sophistication to tree communication with more effective VOC-mediated interactions between trees of the same versus a different genotype, kin-group, or chemotype. Moreover, common mycorrhizal networks have been shown to convey stress-related signals in intra- and interspecific associations. Together these two forms of communication represent “wireless” and “wired” channels with significance to facilitating plant resistance to herbivores. Summary In this review, we examine tree-tree communication with a focus on research in natural forest ecosystems. We particularly address the effects of tree-tree communication on interactions with herbivorous insects. Aboveground and belowground interactions are both reviewed and suggested implications for forest management and future research are presented.

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Effect of drought and pine weevil damage on mechanically protected Norway spruce seedlings

Domevscik,

Wallertz,

Hjelm

2024

Forest Ecology and Management

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Responses of soil-grown Scots pine seedlings to experimental warming, moderate nitrogen addition and bark herbivory in a three-year field experiment

Cited by 9 publications

References 65 publications

Emissions of biogenic volatile organic compounds (BVOCs) from the rhizosphere of Scots pine (Pinus sylvestris) seedlings exposed to warming, moderate N addition and bark herbivory by large pine weevil (Hylobius abietis)

Emissions of biogenic volatile organic compounds (BVOCs) from the rhizosphere of Scots pine (Pinus sylvestris) seedlings exposed to warming, moderate N addition and bark herbivory by large pine weevil (Hylobius abietis)

Tree Communication: the Effects of “Wired” and “Wireless” Channels on Interactions with Herbivores

Effect of drought and pine weevil damage on mechanically protected Norway spruce seedlings

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