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Seisuke Kimura - One of the best experts on this subject based on the ideXlab platform.
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leaves may function as temperature sensors in the heterophylly of Rorippa aquatica brassicaceae
Plant Signaling & Behavior, 2015Co-Authors: Hokuto Nakayama, Seisuke KimuraAbstract:Many plants show heterophylly, which is variation in leaf form within a plant owing to environmental change. The molecular mechanisms underlying heterophylly have recently been investigated in several plant species. However, little is known about how plants exhibiting heterophylly sense environmental cues. Here, we used Rorippa aquatica (Brassicaceae), which shows heterophylly, to investigate whether a single leaf can sense and transit changes in ambient temperature. The morphology of newly developed leaves after single-leaf warming treatment was significantly different from that of mock-treated control leaves, suggesting that leaves are sensing organs that mediate the responses to changes in ambient temperature in R. aquatica.
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molecular phylogeny determined using chloroplast dna inferred a new phylogenetic relationship of Rorippa aquatica eaton ej palmer steyermark brassicaceae lake cress
American Journal of Plant Sciences, 2014Co-Authors: Hokuto Nakayama, Kenji Fukushima, Tatsuya Fukuda, Jun Yokoyama, Seisuke KimuraAbstract:North American lake cress, Rorippa aquatica (Eaton) EJ Palmer & Steyermark (Brassicaceae), is listed as an endangered or threatened species. Lake cress shows heterophyllic changes in leaf form in response to the surrounding environment. Therefore, this species has received considerable attention from ecological and morphological perspectives. However, its phylogenetic position and taxonomic status have long been a subject of debate. To analyze the phylogenetic relationship of lake cress, we investigated chloroplast DNA sequences from 17 plant species. The results of phylogenetic reconstruction performed using trnL intron, trnG (GCC)-trnM (CAU), and psbC-trnS (UGA) indicated that lake cress is a member of Rorippa. Moreover, we found that the chromosome number of lake cress is 2n = 30. This result indicated that lake cress might have originated from aneuploidy of triploid species or via intergeneric crossing. Taken together, our results suggest an affinity between lake cress and Rorippa at the molecular level, indicating that lake cress should be treated as Rorippa aquatica (Eaton) EJ Palmer & Steyermark.
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Molecular Phylogeny Determined Using Chloroplast DNA Inferred a New Phylogenetic Relationship of Rorippa aquatica (Eaton) EJ Palmer & Steyermark (Brassicaceae)Lake Cress
American Journal of Plant Sciences, 2014Co-Authors: Hokuto Nakayama, Kenji Fukushima, Tatsuya Fukuda, Jun Yokoyama, Seisuke KimuraAbstract:North American lake cress, Rorippa aquatica (Eaton) EJ Palmer & Steyermark (Brassicaceae), is listed as an endangered or threatened species. Lake cress shows heterophyllic changes in leaf form in response to the surrounding environment. Therefore, this species has received considerable attention from ecological and morphological perspectives. However, its phylogenetic position and taxonomic status have long been a subject of debate. To analyze the phylogenetic relationship of lake cress, we investigated chloroplast DNA sequences from 17 plant species. The results of phylogenetic reconstruction performed using trnL intron, trnG (GCC)-trnM (CAU), and psbC-trnS (UGA) indicated that lake cress is a member of Rorippa. Moreover, we found that the chromosome number of lake cress is 2n = 30. This result indicated that lake cress might have originated from aneuploidy of triploid species or via intergeneric crossing. Taken together, our results suggest an affinity between lake cress and Rorippa at the molecular level, indicating that lake cress should be treated as Rorippa aquatica (Eaton) EJ Palmer & Steyermark.
Qixing Zhou - One of the best experts on this subject based on the ideXlab platform.
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Fertilizer amendment for improving the phytoextraction of cadmium by a hyperaccumulator Rorippa globosa (Turcz.) Thell
Journal of Soils and Sediments, 2011Co-Authors: Qixing Zhou, Jie ZhanAbstract:Purpose Two main pathways of phytoremediation of heavy metal-contaminated soils are phytostabilization and phytoextraction. Some soil amendments can strengthen phytostabilization or phytoextraction through either reducing heavy metal bioavailability in soil or increasing the heavy metal accumulation capacity of the hyperaccumulator (enhancing heavy metal concentration or shoot biomass of the hyperaccumulator). Urea and chicken manure are often used as fertilizers. This research will explore their effects on a newly found hyperaccumulator, Rorippa globosa (Turcz.) Thell., phytoremediating cadmium (Cd).
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the role of edta on cadmium phytoextraction in a cadmium hyperaccumulator Rorippa globosa
Journal of Environmental Chemistry and Ecotoxicology, 2011Co-Authors: Qixing Zhou, Yingming Xu, Lin Wang, Xuefeng LiangAbstract:Enhanced phytoextraction technologies have been proposed as an effective approach to the decontamination of heavy metals in soils. In this study, the application of ethylene diamine tetraacetic acid (0.5 and 1.0 g/kg EDTA) at preflowering stage depressed Rorippa globosa growth and Cd uptake, the dry biomass, Cd concentration and total metal accumulation (TMC) of shoots at the concentration of 1.0 g/kg EDTA resulted in 39.6, 3.1 and 41.0% reduction, respectively, relative to the control. In contrast, when EDTA was added at flowering and mature stages, it facilitated plant production and Cd absorption. Especially for 1.0 g/kg EDTA applied at mature stage, the maximum of shoot dry biomass, Cd concentration, TMC and remediation ratio (RR) were obtained, which were 4.7 g/pot, 210.3 mg/kg, 982.4 µg/pot and 1.6, respectively. Therefore, the moderate concentration of EDTA (1.0 g/kg) applied at optimal growing stage (mature stage) of R. globosa was more effective in increasing phytoextraction of Cd from contaminated soils. Key words: EDTA, induced-phytoextraction, Cd-hyperaccumulator, Rorippa globosa.
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cadmium accumulation in relation to organic acids and nonprotein thiols in leaves of the recently found cd hyperaccumulator Rorippa globosa and the cd accumulating plant Rorippa islandica
Journal of Plant Growth Regulation, 2011Co-Authors: Qixing ZhouAbstract:It has been proposed that organic acid and nonprotein thiol are involved in the hyperaccumulation of metals. In this study, Cd accumulation, organic acid, and nonprotein thiol production and their relationships in the leaves of Cd-hyperaccumulator Rorippa globosa were examined and compared with a closely related species, Rorippa islandica. The results showed that there was no reduction in biomass of R. globosa when treated with 25 μg Cd g−1 (T2), despite Cd accumulation in the leaves was up to 158.2 μg g−1 DW. On the other hand, the growth of Cd-treated R. islandica was obviously inhibited as it accumulated more than 100 μg g−1 DW in the leaves. Therefore, R. islandica behaved as a Cd-accumulating plant. The Cd treatments could significantly induce the synthesis of acetic acid in both species, suggesting that acetic acid, as the most abundant organic acid, might be related to the Cd accumulation. Significant positive correlations between Cd concentrations and both tartaric and malic acid concentrations in the leaves of R. globosa were observed. There was a significant positive correlation between Cd concentrations and acetic acid concentrations in the leaves of R. islandica. This trend of tartaric and malic acids in the leaves of R. globosa and acetic acid in the leaves of R. islandica might be related to Cd accumulation. In addition, a quadratic relationship was obviously observed for NP-SH contents and total Cd concentrations in the leaves of R. globosa, indicating that NP-SH was significantly related to Cd accumulation and tolerance.
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characteristics of cadmium accumulation and tolerance in Rorippa globosa turcz thell a species with some characteristics of cadmium hyperaccumulation
Plant Growth Regulation, 2010Co-Authors: Qixing ZhouAbstract:Characteristics of cadmium (Cd) accumulation and tolerance in Rorippa globosa (Turcz.) Thell., a species with some characteristics of cadmium hyperaccumulation were further investigated and compared with a closely related species, Rorippa islandica. The results showed that there was no phytotoxicity for R. globosa leaves or reduction in biomass when treated with 25 μg Cd g−1, although the concentration of Cd accumulated in the leaves was up to 218.9 μg Cd g−1 dry weight (DW). On the contrary, Cd toxicity was observed in R. islandica leaves by way of determining changes in fresh weight (FW), malondialdehyde (MDA) level and chlorophyll content while treated with 25 μg Cd g−1 DW. R. globosa had stronger self-protection ability than R. islandica to adapt to oxidative stress caused by Cd. Application of Cd significantly increased the activity of superoxide dismutase (SOD) in leaves, the activity of peroxidase (POD) in roots, and the activity of catalase (CAT) in leaves and roots of R. globosa. By contrast, in R. islandica, the activity of antioxidant enzymes was inhibited or unchanged by various Cd treatments. However, R. globosa leaves had higher activity of antioxidant enzymes such as SOD and POD than that of R. islandica. The antioxidative defense systems in R. globosa might play an important role in Cd tolerance. The Cd treatments significantly induced the synthesis of phytochelatins (PCs) in the two species. Leaf PCs and Cd accumulation by R. globosa were much greater than those by R. islandica, but root PCs and Cd accumulation by R. islandica were much greater than those by R. globosa, suggesting that PCs in leaves may be a biomarker of Cd hyperaccumulation, and the synthesis of PCs may be related to an increase in the uptake of Cd ions into the cytoplasm, not the primary mechanism for Cd tolerance.
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phytoremediation of cadmium contaminated soils by Rorippa globosa using two phase planting 5 pp
Environmental Science and Pollution Research, 2006Co-Authors: Qixing ZhouAbstract:Background Phytoextraction of contaminated soils by heavy metals can provide a great promise of commercial development. Although there are more than 400 species of hyperaccumulators found in the world, phytoremediation technology is rarely applied in field practice for remedying contaminated soils, partially due to low biomass and long growth duration for most of discovered hyperaccumulating plants. In order to enhance the metal-removing efficiency in a year, the two-phase planting countermeasure of phytoextraction by harvesting anthesis biomass was investigated on the basis of the newly found Cd-hyperaccumulator Rorippa globosa (Turcz.) Thell. with 107.0 and 150.1 mg/kg of the Cd accumulation in stems and leaves, respectively, when soil Cd added was concentrated to 25.0 mg/kg.
Hokuto Nakayama - One of the best experts on this subject based on the ideXlab platform.
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leaves may function as temperature sensors in the heterophylly of Rorippa aquatica brassicaceae
Plant Signaling & Behavior, 2015Co-Authors: Hokuto Nakayama, Seisuke KimuraAbstract:Many plants show heterophylly, which is variation in leaf form within a plant owing to environmental change. The molecular mechanisms underlying heterophylly have recently been investigated in several plant species. However, little is known about how plants exhibiting heterophylly sense environmental cues. Here, we used Rorippa aquatica (Brassicaceae), which shows heterophylly, to investigate whether a single leaf can sense and transit changes in ambient temperature. The morphology of newly developed leaves after single-leaf warming treatment was significantly different from that of mock-treated control leaves, suggesting that leaves are sensing organs that mediate the responses to changes in ambient temperature in R. aquatica.
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molecular phylogeny determined using chloroplast dna inferred a new phylogenetic relationship of Rorippa aquatica eaton ej palmer steyermark brassicaceae lake cress
American Journal of Plant Sciences, 2014Co-Authors: Hokuto Nakayama, Kenji Fukushima, Tatsuya Fukuda, Jun Yokoyama, Seisuke KimuraAbstract:North American lake cress, Rorippa aquatica (Eaton) EJ Palmer & Steyermark (Brassicaceae), is listed as an endangered or threatened species. Lake cress shows heterophyllic changes in leaf form in response to the surrounding environment. Therefore, this species has received considerable attention from ecological and morphological perspectives. However, its phylogenetic position and taxonomic status have long been a subject of debate. To analyze the phylogenetic relationship of lake cress, we investigated chloroplast DNA sequences from 17 plant species. The results of phylogenetic reconstruction performed using trnL intron, trnG (GCC)-trnM (CAU), and psbC-trnS (UGA) indicated that lake cress is a member of Rorippa. Moreover, we found that the chromosome number of lake cress is 2n = 30. This result indicated that lake cress might have originated from aneuploidy of triploid species or via intergeneric crossing. Taken together, our results suggest an affinity between lake cress and Rorippa at the molecular level, indicating that lake cress should be treated as Rorippa aquatica (Eaton) EJ Palmer & Steyermark.
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Molecular Phylogeny Determined Using Chloroplast DNA Inferred a New Phylogenetic Relationship of Rorippa aquatica (Eaton) EJ Palmer & Steyermark (Brassicaceae)Lake Cress
American Journal of Plant Sciences, 2014Co-Authors: Hokuto Nakayama, Kenji Fukushima, Tatsuya Fukuda, Jun Yokoyama, Seisuke KimuraAbstract:North American lake cress, Rorippa aquatica (Eaton) EJ Palmer & Steyermark (Brassicaceae), is listed as an endangered or threatened species. Lake cress shows heterophyllic changes in leaf form in response to the surrounding environment. Therefore, this species has received considerable attention from ecological and morphological perspectives. However, its phylogenetic position and taxonomic status have long been a subject of debate. To analyze the phylogenetic relationship of lake cress, we investigated chloroplast DNA sequences from 17 plant species. The results of phylogenetic reconstruction performed using trnL intron, trnG (GCC)-trnM (CAU), and psbC-trnS (UGA) indicated that lake cress is a member of Rorippa. Moreover, we found that the chromosome number of lake cress is 2n = 30. This result indicated that lake cress might have originated from aneuploidy of triploid species or via intergeneric crossing. Taken together, our results suggest an affinity between lake cress and Rorippa at the molecular level, indicating that lake cress should be treated as Rorippa aquatica (Eaton) EJ Palmer & Steyermark.
James M. Harnly - One of the best experts on this subject based on the ideXlab platform.
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profiling of glucosinolates and flavonoids in Rorippa indica linn hiern cruciferae by uhplc pda esi hrmsn
Journal of Agricultural and Food Chemistry, 2014Co-Authors: Pei Chen, Ren Wei Zhang, Lai Wei Li, James M. HarnlyAbstract:An UHPLC-PDA-ESI/HRMSn profiling method was used to identify the glucosinolates and flavonoids of Rorippa indica (Cruciferae), a wild vegetable and Chinese herb used to treat cough, diarrhea, and rheumatoid arthritis. Thirty-three glucosinolates, more than 40 flavonol glycosides, and 18 other phenolic and common organic compounds were identified. The glucosinolates and polyphenols were separated by UHPLC. High-resolution deprotonated molecules provided high accuracy mass values that were used to determine formulas and provide putative identification of the glucosinolates and flavonoids. The fragments from multistage mass spectrometry were used to elucidate the structures. The concentrations of the main components were based on UV peak areas and molar relative response factors with a single calibration standard. This study found this plant to be a rich source for glucosinolates, containing 24 new glucosinolates, including 14 glucosylated glucosinolates that were previously unidentified.
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Profiling of glucosinolates and flavonoids in Rorippa indica (Linn.) Hiern. (cruciferae) by UHPLC-PDA-ESI/HRMSn
Journal of Agricultural and Food Chemistry, 2014Co-Authors: Long-ze Lin, Jianghao Sun, Ren Wei Zhang, Xiao E. Fan, Lai Wei Li, Pei Chen, James M. HarnlyAbstract:An UHPLC-PDA-ESI/HRMS(n) profiling method was used to identify the glucosinolates and flavonoids of Rorippa indica (Cruciferae), a wild vegetable and Chinese herb used to treat cough, diarrhea, and rheumatoid arthritis. Thirty-three glucosinolates, more than 40 flavonol glycosides, and 18 other phenolic and common organic compounds were identified. The glucosinolates and polyphenols were separated by UHPLC. High-resolution deprotonated molecules provided high accuracy mass values that were used to determine formulas and provide putative identification of the glucosinolates and flavonoids. The fragments from multistage mass spectrometry were used to elucidate the structures. The concentrations of the main components were based on UV peak areas and molar relative response factors with a single calibration standard. This study found this plant to be a rich source for glucosinolates, containing 24 new glucosinolates, including 14 glucosylated glucosinolates that were previously unidentified.
Ni Siluh Putu Nuryanti - One of the best experts on this subject based on the ideXlab platform.
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potensi gulma Rorippa indica sebagai reservoar parasitoid hemiptarsinus varicornis untuk mengendalikan liriomyza huidobrensis
Jurnal Penelitian Pertanian Terapan, 2017Co-Authors: Hamdani Hamdani, Ni Siluh Putu NuryantiAbstract:Leafminers, Liriomyza huidobrensis (Blanchard) (Diptera: Agromyzidae) known as main pest at vegetable and ornamental crop. Hemiptarsinus varicornis (Girault) (Hymenoptera: Eulophidae) is one of ectoparasitoid larvae of L. huidobrensis that usually find in the field, however the levels of parasitism at field relative lower. Therefore we need the conservation technology of parasitoid in order to its population overflow so that its performance increases. Rorippa indica (L) have potential as reservoir of parasitoid H. varicornis, so that can be used as conservation medium of H. varicornis. Planting weeds R. indica among of chickpea crop, can decraese the population of adult and larvae L. huidobrensis significantly, increase adult population H. varicornis and larvae population L. huidobrensis parasitism by H. varicornis. Growth rate of population adult H. varicornis at block without weeds R. indica follow the pattern of regretion equation Y=0,1312X–0,2246 and Y=0,7172X+1,1 while at the block planted weeds R. indica. Growth rate of larvae population L. huidobrensis at block without weeds R. indica follow the pattern of regretion equation Y=0,9315X–0,9835 and Y=0,8647X+1,0875 while at the block planted weeds R. indica. Weeds R. indica can be used as reservoar parasitoid H. varicornis in the effort the conservation parasitoid. Keywords: Biological control, Leafminer, Liriomyza huidobrensis, conservation technology reservoir parasitoids, Hemiptarsinus varicornis
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potensi gulma Rorippa indica sebagai reservoar parasitoid hemiptarsinus varicornis untuk mengendalikan liriomyza huidobrensis potency of Rorippa indica weed as reservoir of parasitoid hemiptarsinus varicornis to controls of liriomyza huidobrensis
Jurnal Penelitian Pertanian Terapan, 2011Co-Authors: Ni Siluh Putu NuryantiAbstract:Leafminers, Liriomyza huidobrensis (Blanchard) (Diptera: Agromyzidae) known as main pest at vegetable and ornamental crop. Hemiptarsinus varicornis (Girault) (Hymenoptera: Eulophidae) is one of ectoparasitoid larvae of L. huidobrensis that usually find in the field, however the levels of parasitism at field relative lower. Therefore we need the conservation technology of parasitoid in order to its population overflow so that its performance increases. Rorippa indica (L) have potential as reservoir of parasitoid H. varicornis, so that can be used as conservation medium of H. varicornis. Planting weeds R. indica among of chickpea crop, can decraese the population of adult and larvae L. huidobrensis significantly, increase adult population H. varicornis and larvae population L. huidobrensis parasitism by H. varicornis. Growth rate of population adult H. varicornis at block without weeds R. indica follow the pattern of regretion equation Y=0,1312X–0,2246 and Y=0,7172X+1,1 while at the block planted weeds R. indica. Growth rate of larvae population L. huidobrensis at block without weeds R. indica follow the pattern of regretion equation Y=0,9315X–0,9835 and Y=0,8647X+1,0875 while at the block planted weeds R. indica. Weeds R. indica can be used as reservoar parasitoid H. varicornis in the effort the conservation parasitoid. Keywords: Biological control, Leafminer, Liriomyza huidobrensis, conservation technology reservoir parasitoids, Hemiptarsinus varicornis Diterima: 23-01-2011, disetujui: 28-04-2011
