Effects of exogenous spermidine on poplar resistance to leaf and root herbivory as affected by soil cadmium stress

Qin, Siyu; Wu, Zhengqin; Tang, Jiayao; Zhu, Guoqing; Gang, Chen; Chen, Lianghua; Liang, H.; Wang, Xuegui; Zhu, Tianhui; Lin, Tiantian

doi:10.1016/j.jenvman.2021.112467

Cited by 9 publications

(3 citation statements)

References 46 publications

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“…Exposure of plants to Cd significantly induces the emission of VOCs, effectively deterring females of both specialist and generalist herbivore species from oviposition [ 117 ]. Meanwhile, the application of exogenous spermidine and nitrogen demonstrates a positive correlation between plant growth and the inhibition of Cd on herbivore growth [ 118 , 119 ]. Herbivores consuming leaves with higher Cd content show inhibited growth [ 116 ].…”

Section: Metal(loid) Defense Against Biotic Stressmentioning

confidence: 99%

Advances in the Involvement of Metals and Metalloids in Plant Defense Response to External Stress

Zhang,

Liu,

Song

et al. 2024

Plants

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Plants, as sessile organisms, uptake nutrients from the soil. Throughout their whole life cycle, they confront various external biotic and abiotic threats, encompassing harmful element toxicity, pathogen infection, and herbivore attack, posing risks to plant growth and production. Plants have evolved multifaceted mechanisms to cope with exogenous stress. The element defense hypothesis (EDH) theory elucidates that plants employ elements within their tissues to withstand various natural enemies. Notably, essential and non-essential trace metals and metalloids have been identified as active participants in plant defense mechanisms, especially in nanoparticle form. In this review, we compiled and synthetized recent advancements and robust evidence regarding the involvement of trace metals and metalloids in plant element defense against external stresses that include biotic stressors (such as drought, salinity, and heavy metal toxicity) and abiotic environmental stressors (such as pathogen invasion and herbivore attack). We discuss the mechanisms underlying the metals and metalloids involved in plant defense enhancement from physiological, biochemical, and molecular perspectives. By consolidating this information, this review enhances our understanding of how metals and metalloids contribute to plant element defense. Drawing on the current advances in plant elemental defense, we propose an application prospect of metals and metalloids in agricultural products to solve current issues, including soil pollution and production, for the sustainable development of agriculture. Although the studies focused on plant elemental defense have advanced, the precise mechanism under the plant defense response still needs further investigation.

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Section: Metal(loid) Defense Against Biotic Stressmentioning

confidence: 99%

Advances in the Involvement of Metals and Metalloids in Plant Defense Response to External Stress

Zhang,

Liu,

Song

et al. 2024

Plants

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“…The soil samples were ground and screened in each plant. A total of 0.2 g of screened plant and soil samples were digested using the wet method [73]. Finally, inductively coupled plasma mass spectrometry (ICP-MS) was used to determine the content of Cd in plants and soil.…”

Section: Determination Of CD In Plant and Soil Samplesmentioning

confidence: 99%

“…Then, we put the leak on the digestion tube and placed it in the ventilation cupboard for the night. Then, the digestion tube was placed on the graphite digestion meter, and the temperature stage was set to 80 • C (20 min), 120 • C (20 min), 160 • C (20 min), and 180 • C (60 min) [73]. After digestion, the clear digestion solution cooled to room temperature was transferred to a capacity bottle of 50 mL, the digestion tube was washed with deionized water many times, and then the liquid was fixed to a volume of 50 mL.…”

Section: Determination Of CD In Plant and Soil Samplesmentioning

confidence: 99%

UVB-Pretreatment-Enhanced Cadmium Absorption and Enrichment in Poplar Plants

Zhao

Shi

et al. 2022

IJMS

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The phenomenon of cross adaptation refers to the ability of plants to improve their resistance to other stress after experiencing one type of stress. However, there are limited reports on how ultraviolet radiation B (UVB) pretreatment affects the enrichment, transport, and tolerance of cadmium (Cd) in plants. Since an appropriate UVB pretreatment has been reported to change plant tolerance to stress, we hypothesized that this application could alter plant uptake and tolerance to heavy metals. In this study, a woody plant species, 84K poplar (Populus alba × Populus glandulosa), was pretreated with UVB and then subjected to Cd treatment. The RT-qPCR results indicated that the UVB-treated plants could affect the expression of Cd uptake, transport, and detoxification-related genes in plants, and that the UVB-Pretreatment induced the ability of Cd absorption in plants, which significantly enriched Cd accumulation in several plant organs, especially in the leaves and roots. The above results showed that the UVB-Pretreatment further increased the toxicity of Cd to plants in UVB-Cd group, which was shown as increased leaf malonaldehyde (MDA) and hydrogen peroxide (H2O2) content, as well as downregulated activities of antioxidant enzymes such as Superoxide Dismutase (SOD), Catalase (CAT), and Ascorbate peroxidase (APX). Therefore, poplar plants in the UVB-Cd group presented a decreased photosynthesis and leaf chlorosis. In summary, the UVB treatment improved the Cd accumulation ability of poplar plants, which could provide some guidance for the potential application of forest trees in the phytoremediation of heavy metals in the future.

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