Elevation-dependent selection for plasticity in leaf and root traits of Polygonum hydropiper in response to flooding

Wei, Guan-Wen; Chen, Yuhan; Sun, Xin-Sheng; Matsubara, Shizue; Luo, Fang‐Li; Yu, Fei‐Hai

doi:10.1016/j.envexpbot.2020.104331

Cited by 14 publications

(13 citation statements)

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“…Our study found that a single cress rotation and rotation under 80% SWC increased the cucumber yield. Research indicated that increasing precipitation and soil water availability can increase crop performance and the increase is related to the pattern of crop rotation (Wei et al, 2021;Xuan et al, 2012). Therefore, cress cultivated with varying degrees of flooding was rotated with cucumber could affect cucumber development.…”

Section: Discussionmentioning

confidence: 99%

Crop Rotation With Cress Increases Cucumber Yields by Regulating the Composition of the Rhizosphere Soil Microbial Community

et al. 2021

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Paddy-upland rotation is an effective agricultural management practice for alleviating soil sickness. However, the effect of varying degrees of flooding on the soil microbial community and crop performance remains unclear. We conducted a pot experiment to determine the effects of two soil water content (SWC) and two flooding durations on the soil microbial community attributes and yield in cucumber. In the pot experiment, cucumber was rotated with cress single (45 days) or double (90 days) under 100 or 80% SWC. Then, the soil microbial were inoculated into sterilized soil to verified the relationship between cucumber growth and microorganisms. The results indicated single cress rotation resulted in a higher cucumber yield than double cress rotation and control. Cress rotation under 80% SWC had higher soil microbial diversity than cress rotation under 100% SWC and control. Flooding duration and SWC led to differences in the structure of soil microbial communities. Under 80% SWC, single cress rotation increased the relative abundance of potentially beneficial microorganisms, including Roseiflexus and Pseudallescheria spp., in cucumber rhizosphere. Under 100% SWC, single cress rotation increased the relative abundance of potentially beneficial bacteria, such as Haliangium spp., and decreased potential pathogenic fungi, such as Fusarium and Monographella spp., compared with double cress rotation and control. Varying degrees of flooding were causing the difference in diversity, structure and composition of soil microbial communities in the cucumber rhizosphere, which have a positive effect on cucumber growth and development.

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Section: Discussionmentioning

confidence: 99%

Crop Rotation With Cress Increases Cucumber Yields by Regulating the Composition of the Rhizosphere Soil Microbial Community

et al. 2021

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“…The riparian plant Polygonum hydropiper is naturally distributed at both low and high elevations in the HFB in the TGR. This species has high phenotypic plasticity in response to ooding, and especially the response of leaves differs signi cantly between low and high elevation plants (Wei et al 2020;Wei et al 2021). Flooding signi cantly reduces its growth, but induces adventitious root formation within hours after ooding (Wei et al 2021).…”

Section: Introductionmentioning

confidence: 99%

“…This species has high phenotypic plasticity in response to ooding, and especially the response of leaves differs signi cantly between low and high elevation plants (Wei et al 2020;Wei et al 2021). Flooding signi cantly reduces its growth, but induces adventitious root formation within hours after ooding (Wei et al 2021). Therefore, the formation of adventitious roots can be considered as one of the most important traits for plants sensing ooding.…”

Section: Introductionmentioning

confidence: 99%

Nutrient input alleviates negative effects of early and subsequent flooding on growth of Polygonum hydropiper with the aid of adventitious roots

Chen

Wei

Yuan

et al. 2022

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Background and aimsRiparian plants are commonly exposed to flooding, which is often accompanied by eutrophication. Flooding and eutrophication at an early developmental stage of riparian species may provide signals that induce plant responses and affect their performance in subsequent severe stress. However, whether early flooding (either with or without eutrophication) acts as a positive or a stress signal on plant seedlings as well as on plants at later developmental stages remains unclear.Methods Polygonum hydropiper plants germinated from seeds collected both at low and high elevations in the Three Gorges Reservoir Region were subjected to shallower and shorter early flooding or eutrophic flooding treatments, and subsequently subjected to deeper and longer flooding treatments.Results Early flooding and eutrophic flooding significantly induced generation of adventitious roots, suggesting morphological adaptation to flooding. At the end of subsequent flooding, stem length, functional leaf length and width, and biomass of plants formerly subjected to early control treatment were significantly higher than early flooding treatment, but had no significant differences compared with early eutrophic treatment, indicating that negative lag-effects of early flooding can be alleviated by nutrient input. Similarly, subsequent eutrophic flooding also enhanced plant growth compared with subsequent flooding, resulting in significantly higher values of leaf traits and adventitious root number. Plants that originated from low elevation had higher functional leaf length and stem biomass compared with plants from high elevation.Conclusions Nutrient input can alleviate negative effects of early and subsequent flooding on P. hydropiper growth with the aid of adventitious roots.

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“…Because the water level of the TGR rises gradually, early shallow flooding may induce growth responses in certain riparian species, but these responses may differ between low and high elevation plants. Moreover, in low and high elevation plants, the formation of "plastic memory" (environmentally induced phenotypic plasticity can sometimes be heritable; Portela et al, 2020) may be induced after stimulation by different levels of flooding stress for an extended period (Wei et al, 2021). This may be transmitted to the offspring through seeds produced by sexual reproduction, thus affecting the growth performance of offspring plants such as germination, biomass accumulation, and flowering.…”

Section: Introductionmentioning

confidence: 99%

“…The riparian plant Polygonum hydropiper is naturally distributed at both low and high elevations in the HFB in the TGR. This species has high phenotypic plasticity in response to flooding, and especially, plasticity in specific leaf area differs significantly between low and high elevation plants (Wei et al, 2020(Wei et al, , 2021. Flooding significantly reduces growth, but induces adventitious root formation within hours after flooding (Wei et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

Nutrient Inputs Alleviate Negative Effects of Early and Subsequent Flooding on Growth of Polygonum hydropiper With the Aid of Adventitious Roots

et al. 2022

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Riparian plants are exposed to harmful stress induced by flooding, which is often accompanied by eutrophication in the Three Gorges Reservoir Region. The phenomenon is mainly caused by domestic sewage discharges, slow water flow, and agricultural fertilizer pollution. Simulating abiotic stress, such as flooding at the initial period, can act as a signal and induce positive responses of plants to subsequent severe stress. In addition, eutrophication supplies nutrients, provides a favorable environment in the early stages of plant, and facilitates good performance in later development. However, whether early flooding (with or without eutrophication) acts as positive cue or as stress on plants at different developmental stages remains unclear. To address this question, seeds of Polygonum hydropiper were collected from low and high elevations in the hydro-fluctuation belt of the Three Gorges Reservoir Region. Plants germinated from these seeds were subjected to shallower and shorter early flooding treatments with or without eutrophication. Subsequently, plants were subjected to deeper and longer flooding treatments with or without eutrophication. Early flooding and eutrophic flooding significantly induced generation of adventitious roots, suggesting morphological adaptation to flooding. Although early flooding and eutrophic flooding treatments did not increase plant biomass in subsequent treatments compared with control, stem length, length and width of the 1st fully expanded leaf, and biomass of plants in the early eutrophic treatment were higher than these of the early flooding treatment plants. These results suggest a negative lag-effect of early flooding, and also indicate that nutrient inputs can alleviate such effects. Similarly, subsequent eutrophic flooding also enhanced plant growth compared with subsequent flooding, showing significantly higher values of leaf traits and adventitious root number. Plants originated from low elevation had significantly higher functional leaf length and stem biomass compared with those from high elevation. These results suggest that nutrient inputs can alleviate negative effects of early and subsequent flooding on growth of P. hydropiper with the generation of adventitious roots.

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Elevation-dependent selection for plasticity in leaf and root traits of Polygonum hydropiper in response to flooding

Cited by 14 publications

References 58 publications

Crop Rotation With Cress Increases Cucumber Yields by Regulating the Composition of the Rhizosphere Soil Microbial Community

Crop Rotation With Cress Increases Cucumber Yields by Regulating the Composition of the Rhizosphere Soil Microbial Community

Nutrient input alleviates negative effects of early and subsequent flooding on growth of Polygonum hydropiper with the aid of adventitious roots

Nutrient Inputs Alleviate Negative Effects of Early and Subsequent Flooding on Growth of Polygonum hydropiper With the Aid of Adventitious Roots

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