Effects of open drainage ditch design on bacterial and fungal communities of cold waterlogged paddy soils

Shanlian, Qiu; Wang, MK; Wang, Fei; Chen, Jichen; Li, Xiaoyan; Li, Qinghua; Lin, Chi-Chung; Lin, Xi Zhang

doi:10.1590/s1517-83822013000300050

Cited by 12 publications

(7 citation statements)

References 33 publications

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“…Previous studies showed shifts in the soil bacterial and fungal communities with distance gradient from the ditch [9,51]. For example, Qiu et al [52] revealed that fungal diversity was higher at a plot 5 m from the ditch related to the well-drained soil condition and the improvements in nutrient availability compared to the plot at a 75 m distance with poor drainage condition. Therefore, changes in fungal community structures in peat soil might serve as a sensitive indicator for changes in soil properties.…”

Section: Absorptive Root Morphological Variation Along With the Distance From The Ditchmentioning

confidence: 99%

Morphological Variation in Absorptive Roots in Downy Birch (Betula pubescens) and Norway Spruce (Picea abies) Forests Growing on Drained Peat Soils

Rezapour

Truu

Maddison

et al. 2022

Forests

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Peatland drainage based on ditch systems is a widely used forestry management practice in the boreal and hemiboreal forests to improve tree growth. This study investigated the morphological variation in absorptive roots (first- and second-order roots) across the distance gradient from the ditch with four sampling plots (5, 15, 40, and 80 m) in six drained peatland forests dominated by Downy birch and Norway spruce. The dominating tree species had a significant effect on the variation in absorptive root morphological traits. The absorptive roots of birch were thinner with a higher specific root area and length (SRA and SRL), higher branching intensity (BI), and lower root tissue density (RTD) than spruce. The distance from the ditch affected the absorptive root morphological traits (especially SRA and RTD), but this effect was not dependent on tree species and was directionally consistent between birch and spruce. With increased distance from the ditch (from plot 5 to plot 80), the mean SRA increased by about 10% in birch and 5% in spruce; by contrast, the mean RTD decreased by about 10% in both tree species, indicating a potential shift in nutrient foraging. However, soil physical and chemical properties were not dependent on the distance from the ditch. We found a species-specific response in absorptive root morphological traits to soil properties such as peat depth, pH, and temperature. Our results should be considered when evaluating the importance of morphological changes in absorptive roots when trees acclimate to a changing climate.

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Section: Absorptive Root Morphological Variation Along With the Distance From The Ditchmentioning

confidence: 99%

Morphological Variation in Absorptive Roots in Downy Birch (Betula pubescens) and Norway Spruce (Picea abies) Forests Growing on Drained Peat Soils

Rezapour

Truu

Maddison

et al. 2022

Forests

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“…Such concentrations were toxic to the mutant yap1Δ strain while had no effect on the wild type yeast strain. [24]. Some foods rich in polyphenols have been shown to maintain normal cell growth even when cells are stressed with H 2 O 2 or menadione [19,22,23].…”

Section: Discussionmentioning

confidence: 99%

Bactris Setosa Mart. (Tucum-do-cerrado) Aqueous Extract Increases Growth and Viability in Saccharomyces Cerevisiae BY4741 and YAP1Δ Under Stress Caused by Menadione and Hydrogen Peroxide

Silva

2021

Preprint

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Yeast cells from Saccharomyces cerevisiae can increase endogenous antioxidant response when stressed to prevent cell death. YAP1 is a transcription factor responsible to activate genes that encoding antioxidant enzymes such as superoxide dismutase and catalase and can be an important key to protect these cells. Tucum-do-cerrado (Bactris setosa Mart.) is a Brazilian fruit rich in polyphenols and bioactive compounds mainly found in the peel. This study investigated cell growth and viability using S. cerevisiae wild type and yap1∆ strains exposed to tucum-do-cerrado peel aqueous extract and hydrogen peroxide (H2O2) and menadione induced oxidative stress. Yeast cells from BY4741 and yap1∆ were exposed to different concentrations of tucum extract, menadione and hydrogen peroxide separated and together in mixed groups for 20h and measured for growth curve. For colony survival yeast cells were exposed to these compounds for 72h in ágar plates and colonies were counted. Results showed that aqueous extract of tucum-do-cerrado was capable to recover BY4741 density of cells stressed with both menadione and H2O2 but not for yap1∆ strain. Besides, higher concentrations of the extract demonstrated a delay in cell growth. Colony survival showed that the exposition to tucum extract resulted in colony recover in BY4741 yeast cells but not for mutant yap1∆ strains which maintained low viability even with high extract concentration. In conclusion, despite S. cerevisiae antioxidant response to menadione and H2O2 is different, the protection afforded by tucum extract in H2O2 stressed cells, is probably through an YAP1 pathway.

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“…PGPR application which contains phosphate solubilizing bacteria supposed to be has a minor effect on soil microbes. Interestingly, Bio IPM had no significant effect on the phosphate solubilizing bacteria in wet season, presumably because high waterlogging would adversely affect the life of soil bacteria (Qiu et al 2013). Finally, it can be stated that Bio IPM improves soil microbiology by increasing total soil bacteria and phosphate solubilizing bacteria.…”

Section: Discussionmentioning

confidence: 99%

Abundance of soil microbes, endophytic fungi and blast disease of paddy rice with three pest management practices

et al. 2020

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Abstract. Wiyono S, Istiaji B, Triwidodo H, Suryaningsih AS. 2020. Abundance of soil microbes, endophytic fungi and blast disease of paddy rice with three pest management practices. Biodiversitas 21: 4234-4239. Rice production in Indonesia faces a potential threat of pests and diseases. Biointensive Integrated Pest Management (Bio IPM) is a new approach based on natural and biological control, which effectively controls pests and diseases. However, the impact of this technology on soil microbes and endophytic fungi is almost unknown. The objective of the study was to investigate the effect of Bio IPM on abundance of soil microbes, endophytic fungi, and blast disease under field conditions. Three pest management types were tested i.e. conventional, reduced pesticides, and Bio IPM. Field experiment was set in four replications in randomized complete block design. Experiments were carried out in two seasons i.e. dry and wet season. Variables assessed during experiment were amount of soil bacteria, soil fungi, phosphate solubilizing bacteria, colonization of total leaf endophytes, colonization of Nigrospora sp., and blast disease severity. The results showed that the abundance of soil bacteria and phosphate solubilizing bacteria were significantly increased with Bio IPM whereas it was not found to be significant in soil fungi. Total endophytic fungi and Nigrospora sp. were found higher in Bio IPM especially in early growth stages. Bio IPM controlled neck blast more effectively than conventional and reduced pesticides, but it did not show any significant effect on leaf blast disease.

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Effects of open drainage ditch design on bacterial and fungal communities of cold waterlogged paddy soils

Cited by 12 publications

References 33 publications

Morphological Variation in Absorptive Roots in Downy Birch (Betula pubescens) and Norway Spruce (Picea abies) Forests Growing on Drained Peat Soils

Morphological Variation in Absorptive Roots in Downy Birch (Betula pubescens) and Norway Spruce (Picea abies) Forests Growing on Drained Peat Soils

Bactris Setosa Mart. (Tucum-do-cerrado) Aqueous Extract Increases Growth and Viability in Saccharomyces Cerevisiae BY4741 and YAP1Δ Under Stress Caused by Menadione and Hydrogen Peroxide

Abundance of soil microbes, endophytic fungi and blast disease of paddy rice with three pest management practices

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