Effect of Exogenous Sulfur on Photosynthesis System of Fagopyrum tataricum Seedlings Under Cadmium Stress

2021 ◽  
Vol 15 (5) ◽  
pp. 705-712
Author(s):  
Jianbo Tang ◽  
Hui Liu ◽  
Yang Lu ◽  
Zhongmin Xia ◽  
Jieqiong Zhang
Keyword(s):  
Chlorophyll A ◽  
Control Level ◽  
Physiological Mechanism ◽  
Reaction System ◽  
Calcium Content ◽  
Cadmium Stress ◽  
Tartary Buckwheat ◽  
Cd Stress ◽  
Fagopyrum Tataricum ◽  
Psii Photochemistry

This study explored the physiological mechanism of adscititious sulfur induced cadmium tolerance in tartary buckwheat (Fagopyrum tataricum) on the photosynthetic reaction system. The results showed that the supplementation of S could boost chlorophyll a and b content during Cd treatment, as well as the chlorophyll a/b ratio. Cd stress significantly increased the contents of ALA, PBG, Urogen III, Coprogen III, and Proto IX, while the Mg-Proto IX and pchlide contents were significantly reduced. These results indicate that Cd stress block the synthesis of chlorophyll through interruption of the synthesis of Mg-Proto IX. The adoption of additional S under Cd stress reversed the above contents to the control level. In addition, Cd stress had no significant effect on iron and calcium content, yet was able to significantly decrease Mg, Mn, and Cu content. The lack of Cu and Mn in the tartary buckwheat leaves consequently resulted in the interruption of the electron transport chain at the oxidation region of the PSII reaction centers. The photosynthesis and quantum yield of the PSII photochemistry were both significantly enhanced with additional sulfur under Cd treatment. In conclusion, the results advance the theoretical mechanism of excess S in alleviating the Cd stress in plants through the photosynthetic pathway.

Development of Rutin-rich Noodles Using Trace-rutinosidase Variety of Tartary Buckwheat (Fagopyrum Tataricum Gaertn.) ‘Manten-Kirari’

2019 ◽  
Vol 25 (6) ◽  
pp. 915-920
Author(s):  
Tatsuro Suzuki ◽  
Toshikazu Morishita ◽  
Shigenobu Takigawa ◽  
Takahiro Noda ◽  
Koji Ishiguro
Keyword(s):  
Tartary Buckwheat ◽  
Fagopyrum Tataricum

scholarly journals Growth and Antioxidant Responses in Iron-Biofortified Lentil under Cadmium Stress

Toxics ◽  
2021 ◽  
Vol 9 (8) ◽  
pp. 182
Author(s):  
Ruchi Bansal ◽  
Swati Priya ◽  
Harsh Kumar Dikshit ◽  
Sherry Rachel Jacob ◽  
Mahesh Rao ◽  
...  
Keyword(s):  
Growth Parameters ◽  
Dry Weight ◽  
Cadmium Stress ◽  
Antioxidant Enzyme Activities ◽  
Limited Information ◽  
Cd Stress ◽  
Fresh Weight ◽  
Cd Uptake ◽  
Cd Tolerance ◽  
Controlled Conditions

Cadmium (Cd) is a hazardous heavy metal, toxic to our ecosystem even at low concentrations. Cd stress negatively affects plant growth and development by triggering oxidative stress. Limited information is available on the role of iron (Fe) in ameliorating Cd stress tolerance in legumes. This study assessed the effect of Cd stress in two lentil (Lens culinaris Medik.) varieties differing in seed Fe concentration (L4717 (Fe-biofortified) and JL3) under controlled conditions. Six biochemical traits, five growth parameters, and Cd uptake were recorded at the seedling stage (21 days after sowing) in the studied genotypes grown under controlled conditions at two levels (100 μM and 200 μM) of cadmium chloride (CdCl2). The studied traits revealed significant genotype, treatment, and genotype × treatment interactions. Cd-induced oxidative damage led to the accumulation of hydrogen peroxide (H2O2) and malondialdehyde in both genotypes. JL3 accumulated 77.1% more H2O2 and 75% more lipid peroxidation products than L4717 at the high Cd level. Antioxidant enzyme activities increased in response to Cd stress, with significant genotype, treatment, and genotype × treatment interactions (p < 0.01). L4717 had remarkably higher catalase (40.5%), peroxidase (43.9%), superoxide dismutase (31.7%), and glutathione reductase (47.3%) activities than JL3 under high Cd conditions. In addition, L4717 sustained better growth in terms of fresh weight and dry weight than JL3 under stress. JL3 exhibited high Cd uptake (14.87 mg g−1 fresh weight) compared to L4717 (7.32 mg g−1 fresh weight). The study concluded that the Fe-biofortified lentil genotype L4717 exhibited Cd tolerance by inciting an efficient antioxidative response to Cd toxicity. Further studies are required to elucidate the possibility of seed Fe content as a surrogacy trait for Cd tolerance.

scholarly journals Effects of cadmium stress on physiological indexes and fruiting body nutritions of Agaricus brasiliensis

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Lingyun Liu ◽  
Hua Chen ◽  
Jing Yuan ◽  
Yixiang Wang ◽  
Boqi Weng ◽  
...  
Keyword(s):  
Agronomic Traits ◽  
Cadmium Stress ◽  
Total Amino Acid ◽  
Fruiting Bodies ◽  
Cd Stress ◽  
Agaricus Brasiliensis ◽  
Nutritional Components ◽  
Physiological Indexes ◽  
Total Amino Acids ◽  
High Absorption

AbstractIn this study, 0, 0.5, 1, 1.5, 2, 4, 6 and 8 mg·kg−1 of cadmium were added to the cultivation materials. In order to study the effects of different concentrations of Cd stress on J1 and J77, the contents of antioxidant enzymes, proline and malondialdehyde, Cd content, agronomic traits and yield of fruiting bodies of Agaricus brasiliensis were determined, and the nutritional components such as polysaccharide, triterpene, protein, total sugar and total amino acid were determined. The results showed that the physiological indexes of strain J1 and J77 changed regularly under different concentrations of Cd stress. J1 was a high absorption and low tolerance variety, while J77 was a low absorption and high tolerance variety. Low concentration of Cd promoted the growth of strain J1, and higher concentration of Cd promoted the growth of strain J77. The contents of protein and total amino acids in the two strains changed greatly, followed by polysaccharides, which indicated that Cd stress had the greatest impact on the three nutrients, and other nutrients were not sensitive to Cd stress.

scholarly journals Antioxidative Activities in Rutin Rich Noodles and Cookies Made with a Trace Rutinosidase Variety of Tartary Buckwheat (Fagopyrum tataricum Gaertn.), ‘Manten-Kirari’

2016 ◽  
Vol 22 (4) ◽  
pp. 557-562 ◽  
Author(s):  
Koji Ishiguro ◽  
Toshikazu Morishita ◽  
Junzo Ashizawa ◽  
Tatsuro Suzuki ◽  
Takahiro Noda
Keyword(s):  
Tartary Buckwheat ◽  
Fagopyrum Tataricum

scholarly journals Alternative Pathway is Involved in Nitric Oxide-Enhanced Tolerance to Cadmium Stress in Barley Roots

Plants ◽  
2019 ◽  
Vol 8 (12) ◽  
pp. 557 ◽  
Author(s):  
Li He ◽  
Xiaomin Wang ◽  
Ruijun Feng ◽  
Qiang He ◽  
Shengwang Wang ◽  
...  
Keyword(s):  
Stress Tolerance ◽  
Alternative Pathway ◽  
Cadmium Stress ◽  
Cd Stress ◽  
No Donor ◽  
Ros Accumulation ◽  
Mda Content ◽  
Scavenging Enzymes ◽  
Tolerance To Cadmium

Alternative pathway (AP) has been widely accepted to be involved in enhancing tolerance to various environmental stresses. In this study, the role of AP in response to cadmium (Cd) stress in two barley varieties, highland barley (Kunlun14) and barley (Ganpi6), was investigated. Results showed that the malondialdehyde (MDA) content and electrolyte leakage (EL) level under Cd stress increased in two barley varieties. The expressions of alternative oxidase (AOX) genes (mainly AOX1a), AP capacity (Valt), and AOX protein amount were clearly induced more in Kunlun14 under Cd stress, and these parameters were further enhanced by applying sodium nitroprussid (SNP, a NO donor). Moreover, H2O2 and O2− contents were raised in the Cd-treated roots of two barley varieties, but they were markedly relieved by exogenous SNP. However, this mitigating effect was aggravated by salicylhydroxamic acid (SHAM, an AOX inhibitor), suggesting that AP contributes to NO-enhanced Cd stress tolerance. Further study demonstrated that the effect of SHAM application on reactive oxygen species (ROS)-related scavenging enzymes and antioxidants was minimal. These observations showed that AP exerts an indispensable function in NO-enhanced Cd stress tolerance in two barley varieties. AP was mainly responsible for regulating the ROS accumulation to maintain the homeostasis of redox state.

scholarly journals Metabolite profiling of tartary buckwheat-an underutilized neutraceutical crop of Kashmir Himalaya

2017 ◽  
Vol 8 ◽  
pp. 49 ◽  
Author(s):  
Tanveer Bilal Pirzadah ◽  
Bisma Malik ◽  
Inayatullah Tahir ◽  
Reiaz Ul Rehman
Keyword(s):  
Metabolite Profiling ◽  
Well Being ◽  
Tartary Buckwheat ◽  
Octadecanoic Acid ◽  
Food Sector ◽  
Fagopyrum Tataricum ◽  
Promising Alternative ◽  
Hull Extract ◽  
Pharmaceutical Properties ◽  
Excellent Source

<p>The aim of the present study was to explore the possible metabolites in the methanolic extract of root, stem, groat and hull of the neutraceutical crop, <em>Fagopyrum tataricum</em> using GC-MS technique. From GC-MS metabolite profiling, over 90 different metabolites were identified among root, stem, groat and hull extract.  The most prevailing compounds were 3, 3’, 4’, 5, 7-pentahydroflavone-3-rhamnoglucoside (71.94%) in groat, 9, 12-octadecadienoic acid (49.38%) in root, 6-octadecanoic acid, a steric acid (70.46%) in hull and Cis-9-hexadecanal (13.38%) in stem. Present investigation reveals that <em>F. tataricum</em> is an excellent source of many metabolites such as, fatty acids, hydrocarbons, steroids, terpenoids, esters, organic acids and aldehydes with excellent pharmaceutical properties. These results suggest that tartary buckwheat could be a promising alternative in the functional food sector and neutraceutical to improve social well-being and diminish malnutrition.</p>

scholarly journals Pretreatment with H2O2 Alleviates the Negative Impacts of NaCl Stress on Seed Germination of Tartary Buckwheat (Fagopyrum tataricum)

Plants ◽  
2021 ◽  
Vol 10 (9) ◽  
pp. 1784
Author(s):  
Xin Yao ◽  
Meiliang Zhou ◽  
Jingjun Ruan ◽  
Yan Peng ◽  
Hao Yang ◽  
...  
Keyword(s):  
Superoxide Dismutase ◽  
Salt Tolerance ◽  
Seed Germination ◽  
Superoxide Dismutase Activity ◽  
Stress Factors ◽  
Tartary Buckwheat ◽  
Tolerance Index ◽  
Fagopyrum Tataricum ◽  
Germination Parameters ◽  
H2o2 Pretreatment

Soil salinization is one of the main abiotic stress factors impacting the growth of crops and the agricultural industry today. Thus, we aimed to investigate the effects of H2O2 pretreatment on seed germination in Tartary buckwheat (Fagopyrum tataricum) seeds under salt stress and to evaluate this species’ salt tolerance. Through the preliminary experiment, this study used 50 mmol L−1 NaCl solution to induce seed stress. After soaking for 12 h in different H2O2 concentrations, seeds were laid in Petri dishes with 50 mmol L−1 NaCl for seven days and the germination parameters and physiological indicators were measured to screen the optimal H2O2 pretreatment concentration and the salt tolerance index. Our results indicated that pretreatment with 5–10 mmol L−1 H2O2 was most effective in alleviating NaCl’s impacts on the seeds’ germination parameters. Furthermore, the growth and material accumulation of seedlings was promoted; catalase, superoxide dismutase activity, and proline content were enhanced; and malondialdehyde content was reduced. Principal component analysis and stepwise regression revealed six key indicators that had a significant impact on the salt tolerance characteristics of F. tataricum, namely, germination potential, shoot fresh weight, root surface area, root average diameter, catalase activity, and superoxide dismutase activity.

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