Screening, characteristics and mechanism of Cd-tolerance Cunninghamella bertholletiae

2018 ◽  
Vol 191 ◽  
pp. 480-489
Author(s):  
Yuan-yuan Ren ◽  
Zhen-yuan Zhu ◽  
Feng-ying Dong ◽  
Qiao-ying Song
Keyword(s):  
Cunninghamella Bertholletiae ◽  
Cd Tolerance

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 Analysis of Cadmium Root Retention for Two Contrasting Rice Accessions Suggests an Important Role for OsHMA2

Plants ◽  
2021 ◽  
Vol 10 (4) ◽  
pp. 806
Author(s):  
Moez Maghrebi ◽  
Elena Baldoni ◽  
Giorgio Lucchini ◽  
Gianpiero Vigani ◽  
Giampiero Valè ◽  
...  
Keyword(s):  
Transcript Abundance ◽  
Root Cells ◽  
Expression Levels ◽  
Cd Tolerance ◽  
Relative Contribution ◽  
Relative Transcript Abundance ◽  
Potential Capacity ◽  
Cd Distribution ◽  
Cd Exposure ◽  
Cd Availability

Two rice accessions, Capataz and Beirao, contrasting for cadmium (Cd) tolerance and root retention, were exposed to a broad range of Cd concentrations (0.01, 0.1, and 1 μM) and analyzed for their potential capacity to chelate, compartmentalize, and translocate Cd to gain information about the relative contribution of these processes in determining the different pathways of Cd distribution along the plants. In Capataz, Cd root retention increased with the external Cd concentration, while in Beirao it resulted independent of Cd availability and significantly higher than in Capataz at the lowest Cd concentrations analyzed. Analysis of thiol accumulation in the roots revealed that the different amounts of these compounds in Capataz and Beirao, as well as the expression levels of genes involved in phytochelatin biosynthesis and direct Cd sequestration into the vacuoles of the root cells, were not related to the capacity of the accessions to trap the metal into the roots. Interestingly, the relative transcript abundance of OsHMA2, a gene controlling root-to-shoot Cd/Zn translocation, was not influenced by Cd exposure in Capataz and progressively increased in Beirao with the external Cd concentration, suggesting that activity of the OsHMA2 transporter may differentially limit root-to-shoot Cd/Zn translocation in Capataz and Beirao.

scholarly journals Role of Two Plant Growth-Promoting Bacteria in Remediating Cadmium-Contaminated Soil Combined with Miscanthus floridulus (Lab.)

Plants ◽  
2021 ◽  
Vol 10 (5) ◽  
pp. 912
Author(s):  
Shuming Liu ◽  
Hongmei Liu ◽  
Rui Chen ◽  
Yong Ma ◽  
Bo Yang ◽  
...  
Keyword(s):  
Plant Growth ◽  
Contaminated Soils ◽  
Translocation Factor ◽  
Plant Growth Promoting Bacteria ◽  
Bacterial Strains ◽  
Pgp Traits ◽  
Cd Tolerance ◽  
Plant Growth Promoting ◽  
Growth Promoting ◽  
Cd Translocation

Miscanthus spp. are energy plants and excellent candidates for phytoremediation approaches of metal(loid)s-contaminated soils, especially when combined with plant growth-promoting bacteria. Forty-one bacterial strains were isolated from the rhizosphere soils and roots tissue of five dominant plants (Artemisia argyi Levl., Gladiolus gandavensis Vaniot Houtt, Boehmeria nivea L., Veronica didyma Tenore, and Miscanthus floridulus Lab.) colonizing a cadmium (Cd)-contaminated mining area (Huayuan, Hunan, China). We subsequently tested their plant growth-promoting (PGP) traits (e.g., production of indole-3-acetic acid, siderophore, and 1-aminocyclopropane-1-carboxylate deaminase) and Cd tolerance. Among bacteria, two strains, Klebsiella michiganensis TS8 and Lelliottia jeotgali MR2, presented higher Cd tolerance and showed the best results regarding in vitro growth-promoting traits. In the subsequent pot experiments using soil spiked with 10 mg Cd·kg−1, we investigated the effects of TS8 and MR2 strains on soil Cd phytoremediation when combined with M. floridulus (Lab.). After sixty days of planting M. floridulus (Lab.), we found that TS8 increased plant height by 39.9%, dry weight of leaves by 99.1%, and the total Cd in the rhizosphere soil was reduced by 49.2%. Although MR2 had no significant effects on the efficiency of phytoremediation, it significantly enhanced the Cd translocation from the root to the aboveground tissues (translocation factor > 1). The combination of K. michiganensis TS8 and M. floridulus (Lab.) may be an effective method to remediate Cd-contaminated soils, while the inoculation of L. jeotgali MR2 may be used to enhance the phytoextraction potential of M. floridulus.

Cunninghamella bertholletiae Endocarditis

2004 ◽  
Vol 12 (2) ◽  
pp. 114-116 ◽  
Author(s):  
Todd D. Barton ◽  
Matthew B. Hillis ◽  
Joel N. Maslow ◽  
William J. Swiggard ◽  
Mindy G. Schuster
Keyword(s):  
Cunninghamella Bertholletiae

scholarly journals A Rare Fungal Infiltration of Lungs in a Healthy Young Girl

2011 ◽  
Vol 2011 ◽  
pp. 1-3 ◽  
Author(s):  
Rajesh Gupta ◽  
Nidhi Goel ◽  
Anupama Gupta ◽  
K. B. Gupta ◽  
Uma Chaudhary ◽  
...  
Keyword(s):  
Broad Spectrum ◽  
Human Disease ◽  
Young Girl ◽  
High Grade ◽  
Healthy Patient ◽  
High Grade Fever ◽  
Cunninghamella Bertholletiae ◽  
First Case ◽  
Pulmonary Infiltration

Cunninghamella bertholletiaeis an opportunistic fungal organism found in soil and is a rare cause of human disease. The few reported cases ofC. bertholletiaehave involved immune compromised hosts. We report a case ofC. bertholletiaein an otherwise healthy patient presenting with persistent high-grade fever and pulmonary infiltration resistant to antibiotics. The organism is isolated through bronchoscopy and responded to broad spectrum antifungal. This is the first case ofC. bertholletiaereported in the literature in an immune competent individual.

Transcriptome analysis of Cd-treated switchgrass root revealed novel transcripts and the importance of HSF/HSP network in switchgrass Cd tolerance

2018 ◽  
Vol 37 (11) ◽  
pp. 1485-1497 ◽  
Author(s):  
Gang Song ◽  
Shaoxun Yuan ◽  
Xuehui Wen ◽  
Zheni Xie ◽  
Laiqing Lou ◽  
...  
Keyword(s):  
Transcriptome Analysis ◽  
Cd Tolerance ◽  
Novel Transcripts

Uncommon pathogens in an immunocompetent host: respiratory isolation of Cunninghamella bertholletiae, Aspergillus niger, Staphylococcus pseudintermedius and adenovirus in a patient with necrotising pneumonia

2022 ◽  
Vol 15 (1) ◽  
pp. e240484
Author(s):  
Christian Olivo Freites ◽  
Hendrik Sy ◽  
Patricia Miguez ◽  
James Salonia
Keyword(s):  
Chronic Obstructive Pulmonary Disease ◽  
Intensive Care Unit ◽  
Intensive Care ◽  
Aspergillus Niger ◽  
Unusual Case ◽  
Chronic Obstructive ◽  
Immunocompetent Host ◽  
Staphylococcus Pseudintermedius ◽  
Obstructive Pulmonary Disease ◽  
Cunninghamella Bertholletiae

We present the unusual case of a 60-year-old immunocompetent woman with chronic obstructive pulmonary disease who developed a necrotising pneumonia with isolation of Cunninghamella bertholletiae, Aspergillus niger, Staphylococcus pseudintermedius and adenovirus. The patient recovered with antimicrobial therapy and supportive care in the intensive care unit. The current literature on diagnosis and treatment of these pathogens is reviewed.

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