South African Journal of Botany最新文献

{"title":"Genetic diversity and genetic structure of local pear cultivars in Xinjiang based on SNP markers","authors":"Qingrui Bi ,&nbsp;Dongsheng Cui ,&nbsp;Guoquan Fan ,&nbsp;Shikui Zhang ,&nbsp;Shaopeng Wang ,&nbsp;Yingying Niu ,&nbsp;Shirong Zhao","doi":"10.1016/j.sajb.2024.10.025","DOIUrl":"10.1016/j.sajb.2024.10.025","url":null,"abstract":"<div><h3>Background</h3><div>Xinjiang is rich in pear varieties, and the genetic relationships among some local cultivars are not clear, which leads to classification controversy. To improve the breeding efficiency of high-quality cultivars, the genetic diversity and genetic structure of these cultivars were accurately evaluated. In this study, single nucleotide polymorphism (SNP) marker technology was used to study the genetic diversity and genetic structure of some local pear cultivars in Xinjiang, aiming to provide reference information for genetic improvement and hybrid combination selection of pear cultivars.</div></div><div><h3>Results</h3><div>In this study, 8,895,117 high-quality SNP loci were successfully developed and used for genetic diversity analysis. The results showed that the genetic differentiation among Xinjiang local pears was low, but nucleotide diversity was high with an average π value of 0. 0043. The tested cultivars were divided into five subgroups for genetic structure analysis. During the period of 4 to 7 million years, the number of pear populations was the largest, and pears developed rapidly during this period.</div></div><div><h3>Conclusions</h3><div>The genetic background of Xinjiang local pear cultivars is complex, the polymorphism is low, and the degree of uncertainty is high. The results of this study help to objectively evaluate excellent germplasm resources, effectively improve breeding efficiency, and help researchers set more scientific breeding goals.</div></div>","PeriodicalId":21919,"journal":{"name":"South African Journal of Botany","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2024-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142592990","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Three Mediterranean species from natural plant communities (Ceratonia siliqua, Pistacia lentiscus, and Olea europaea var. sylvestris): phenolic acids, flavonoids, and biological activities","authors":"Ikbel Kayel ,&nbsp;Badiaa Essghaier ,&nbsp;Mohamed Ali Benabderrahim ,&nbsp;Rocío Rodríguez-Arcos ,&nbsp;Ana Jiménez-Araujo ,&nbsp;Rafael Guillén-Bejarano ,&nbsp;Hédia Hannachi","doi":"10.1016/j.sajb.2024.10.056","DOIUrl":"10.1016/j.sajb.2024.10.056","url":null,"abstract":"<div><div>This study focuses on the phytochemical analysis of the leaves of three Mediterranean species from natural community native to Tunisia. A separated and a mixed leaves extracts were prepared using three species (<em>Ceratonia siliqua</em> L. (C), <em>Pistacia lentiscus</em> L. (L) and <em>Olea europaea</em> L. var. <em>sylvestris</em> or <em>oleaster</em> (O)). Four leaves hydroethanolic extracts including C, L, O and mixed extract coded MCLO (1/3, 1/3, 1/3) were used. The total polyphenols, flavonoids and condensed tannins were determined by colorimetric method. The identification of phenolic profile was performed HPLC-DAD/MS analysis. The antioxidant activity was evaluated by two tests and the antimicrobial activity was done against some clinical microbial pathogens. Results showed that the mixture MCLO extract gave the highest free radical-scavenging activity (IC50 = 0.057 g/mL) and showed an amount of 35.347 mg GAE /g DM of total polyphenols content. As well, the MCLO exhibited significant antibacterial and antifungal activities against the tested pathogen strains except of <em>Candida albicans</em>. Likewise, the MCLO possesses lysozyme activity against <em>Staphylococcus aureus</em> (282.66 AU/mL/min) and showed the highest percentage of inhibition on biofilm formation (97.28%). A total of 14, 11 and 8 phenolic compounds were identified in C, L and O extracts, respectively. Though, in the mixture MCLO extract, 21 phenolic compounds were identified. The high biological activities found with the mixture extract could be related to the three distinguished phenolics acids; trigalloyl-glc (261.10 µg/mL), trigalloylquinic acid (254.68 µg/mL), and digalloyl-glc (225.21 µg/mL). These finding highlights the improvement of the biological activities of carob, lentisk and oleaster using mixed leaves extracts.</div></div>","PeriodicalId":21919,"journal":{"name":"South African Journal of Botany","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2024-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142592989","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Antibacterial activity and synergistic interaction between Artemisia roxburghiana Wall. ex Besser extracts and synthetic antibiotics against resistant clinical isolates","authors":"Syeda Masooma Ali,&nbsp;Sara-Tun-Nisa,&nbsp;Humaira Fatima,&nbsp;Ihsan-ul-Haq","doi":"10.1016/j.sajb.2024.10.035","DOIUrl":"10.1016/j.sajb.2024.10.035","url":null,"abstract":"<div><div>Antimicrobial resistance has imposed a huge challenge by complicating the treatment with existing antibiotics, so searching for novel sources to combat antibacterial resistance is crucial. Therefore, the current study was designed to explore <em>Artemisia roxburghiana</em> Wall. ex Besser as a possible solution to reform antimicrobial resistance. Leaf and stem n-hexane (nH), ethyl acetate (EA), methanol (M), and distilled water (DW) extracts were prepared by successive solvent extraction using ultrasonication-assisted maceration. Chromogenic assays estimated phenolic and flavonoid content along with antioxidant capacitance. Therapeutically significant polyphenols were quantified by reverse-phase high-pressure liquid chromatography (RP-HPLC). Preliminary resistance screening of antibiotics and antibacterial activity of the extracts was executed by disc diffusion and microbroth dilution methods. The checkerboard method, time-kill kinetics, and protein content determination validated the synergistic activity of extracts. Results showed maximum percentage yield in stem DW extract (7.705 %), and highest phenolic and flavonoid content in leaf EA extract with values of 67.47 ± 1.39 and 64.68 ± 1.09 μg gallic acid and quercetin equivalent/ mg extract respectively. Stem DW and M showed the highest antioxidant power and reducing potential with values of 129.34 ± 1.49 and 135.25 ± 0.02 μg ascorbic acid equivalent/ mg extract respectively. Noteworthy quantities of syringic acid (0.539 ± 0.035–16.557±0.38 µg/mg), plumbogen (11.330 ± 0.12 µg/mg) and emodin (0.103 ± 0.002–1.373 ± 0.023 µg/mg) were assessed in extracts through RP-HPLC. Primary profiling of antibiotics revealed resistance of pathogens towards cefixime. Synergistic studies showed total and partial synergy between extracts and clinical isolates. Moreover, a potentiation in the susceptibility of cefixime (2-8-fold reduction in concentration) was observed in time-kill kinetic studies. There was a significant decline in bacterial growth and protein content when treated in combinations at fractional inhibitory concentration index (FICI) compared to cefixime/extracts alone treated isolates. This research has appraised <em>A. roxburghiana</em> as a potential novel candidate for combating bacterial resistance.</div></div>","PeriodicalId":21919,"journal":{"name":"South African Journal of Botany","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2024-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142577803","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Flora and biological spectrum of a savanna enclave within the semiarid Caatinga Dominion in Ceará state, Northeastern Brazil","authors":"Brenda Luana Muniz Gonçalves ,&nbsp;Gabriel Venâncio Cruz ,&nbsp;Maria Amanda Nobre Lisboa ,&nbsp;Leonardo Vitor Alves da Silva ,&nbsp;Maria Girlene dos Santos Queiroz ,&nbsp;Alana de Oliveira Silva ,&nbsp;Maria Rayssa Alves Teixeira ,&nbsp;Maria Arlene Pessoa da Silva ,&nbsp;Valéria da Silva Sampaio ,&nbsp;Leonardo Silvestre Gomes Rocha ,&nbsp;João Tavares Calixto Júnior","doi":"10.1016/j.sajb.2024.10.033","DOIUrl":"10.1016/j.sajb.2024.10.033","url":null,"abstract":"<div><div>Inside the Brazilian semiarid region (Caatinga Dominion), there are enclaves of vegetation from another bioma (Cerrado) that appear as scattered patches, mainly present on the tops of plateaus and in areas locally called \"tabuleiros\". Aiming for a better understanding of the floristic composition to support conservation strategies, a survey of the vascular flora and an analysis of the biological spectrum were conducted in the Serra do Boqueirão (southern state of Ceará, Brazilian Northeastern), an area of significant ecological and regional landscape value. Monthly botanical collections were carried out over 23 months in two distinct areas (with and without rocky outcrops – PAR and AAR), and soil samples were also collected for analysis. Species were classified in the Raunkiaer's life forms, modified according to Braun-Blanquet. The chi-square test and a detrended correspondence analysis (DCA) were performed to compare the areas, along with a similarity test to observe comparisons with other savanna areas in the Caatinga and core areas in Brazil. One hundred and seven species were identified in 92 genera and 40 families. Fabaceae (24 spp.), Malvaceae (8 spp.), and Rubiaceae (6 spp.) were the richest families. The biological spectrum showed a predominance of phanerophytes (52.3 %) and therophytes (25.2 %), forms characteristic of the tree-shrub physiognomy with annual herbs. Statistical analysis indicated that the biological spectrum differs from Raunkiaer's normal, as well as the two areas differ from each other (χ2 = 25.87, <em>p</em> &lt; 0.0001). A high concentration of aluminum was observed in the area with the presence of species characteristic of the Cerrado s.s. such as <em>Curatella americana</em> and <em>Qualea parviflora</em>, and the similarity test indicated greater resemblance to Caatinga areas geographically closer to the study area. These results highlight the presence of a savanna vegetation enclave with a strong penetration of surrounding Caatinga species, emphasizing the role of historical and environmental factors of the vegetation in the area and indicating the need for conservation strategies.</div></div>","PeriodicalId":21919,"journal":{"name":"South African Journal of Botany","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2024-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142578397","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Diabetic foot ulcer healing potential of Tagetes erecta L. flower extract on successive administration in alloxan-induced diabetic rats via modulation of liver functions","authors":"Naveen Singh ,&nbsp;Anjna Sharma ,&nbsp;Vivek Sharma ,&nbsp;Ravinesh Mishra ,&nbsp;Nitin Verma","doi":"10.1016/j.sajb.2024.10.051","DOIUrl":"10.1016/j.sajb.2024.10.051","url":null,"abstract":"<div><div><em>Diabetes mellitus</em> is a prevalent endocrine disorder characterized by inadequate insulin production by the pancreas or improper utilization of insulin by the body, which imposes severe health complications, including cardiovascular, kidney, and neurological disorders with a high potential of foot ulcers. Globally, diabetes is responsible for over 70 % of limb amputations. Alloxan was used to induce diabetes in rats while foot ulcers were induced by the excision method in diabetic rats. Diabetes was confirmed by measuring the parameters like blood glucose, body weight changes, urine excretion, and other biomarker levels after oral administration of <em>Tagetes erecta</em> L. flower extract (TEFE) at different doses. During the work, it was observed that TEFE demonstrated a dose-dependent effect on blood sugar level from 370.2 mg/dl to 113.00 mg/dl and healing of diabetic foot ulcers in a 13 days animal model (<em>p</em> &lt; 0.01). There is significant decline in SGOT, SPGT and ALP levels when compared with diseased group animals. Decrease in wound size was observed when TEFE was administered to diabetic foot ulcer rats. These exciting results steered to enumerate the possible role of TEFE in <em>Diabetes mellitus</em> through a panel of mechanisms of action like inhibition of free radical generation, modulation of liver enzymes and metabolism of glucose etc. The above findings support the hypoglycaemic and diabetic foot ulcer healing potential of TEFE. Moreover, further investigation is required to completely understand the possible mechanism of TEFE.</div></div>","PeriodicalId":21919,"journal":{"name":"South African Journal of Botany","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2024-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142578398","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Drought-induced mortality of an endemic leaf succulent, Argyroderma delaetii, in a South African biodiversity hotspot","authors":"Kerry-Anne Grey ,&nbsp;Natasha L. Atkinson","doi":"10.1016/j.sajb.2024.10.046","DOIUrl":"10.1016/j.sajb.2024.10.046","url":null,"abstract":"<div><div>The biodiversity of the Knersvlakte, located in the Succulent Karoo biodiversity hotspot of South Africa, is predicted to experience an increase in severe drought events during this century. This region harbours a high diversity of endemic leaf succulents and it is unclear whether these will be resistant or vulnerable to drought as experimental and observational studies for this are few and contradictory. This study quantifies the effect of a recent drought in the Knersvlakte on the survival of juvenile and reproductively mature individuals of a quartz plain-adapted leaf succulent, <em>Argyroderma delaetii</em>. The progression of the drought and an experimental watering treatment was quantified using a Standard Precipitation Index from May 2017 to May 2018. The effect of the drought and the watering treatment on the survival of <em>A. delaetii</em> was determined by monitoring individuals using repeat photography for one year. The mortality of individuals in each treatment and life stage was derived from the photographs and a comparative survival analysis was used to quantify the threat posed by the drought conditions. The results indicate that the Knersvlakte experienced severe drying during the 2017 drought in relation to historical records and a median rainfall year. This decreased <em>A. delaetii</em> survival probability three-fold when compared to mortality in a median rainfall year. Mortality was likely driven by an interplay between carbon starvation and hydraulic failure in the leaf succulent due to leaf water reserves not being replenished by the reliable winter rains of the Succulent Karoo, to which this species is adapted. The larger, reproductively mature individuals were more resistant to drought-induced mortality than the smaller juveniles, likely because the mature individuals are significantly larger than juveniles with higher water storage capacity and reduced risk of passing critical osmotic thresholds, allowing for maintained photosynthesis through the drought.</div></div>","PeriodicalId":21919,"journal":{"name":"South African Journal of Botany","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2024-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142572572","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Comprehensive analysis of the oligopeptide transporter gene family in maize: Genome-wide identification, structural characterization, and stress-responsive expression","authors":"Md.Golam Rabby ,&nbsp;Fang Li ,&nbsp;Tao Yang ,&nbsp;Md.Sohel Mia ,&nbsp;Rui Li ,&nbsp;Zhangtao Zhang ,&nbsp;Chao Xia ,&nbsp;Md.Ashrafuzzaman Zahid ,&nbsp;Md.Mahmudul Hasan","doi":"10.1016/j.sajb.2024.10.004","DOIUrl":"10.1016/j.sajb.2024.10.004","url":null,"abstract":"<div><div>Oligopeptide transporter (OPT) proteins are integral proteins in cell membranes that perform a crucial role in cellular metal homeostasis, mineral uptake, transport of small peptides and abiotic stress tolerance. Hence, in-depth evolutionary, structural, molecular and expression analysis could guide in exploring the mechanism of how these transporters contribute to nutrient balance and abiotic stress tolerance in maize. Following a series of bioinformatic analyses, eight OPTs in maize were identified. These transporters showed significant variations in molecular weight, and have one to five introns, 11 to 15 motifs, 11 to 18 transmembrane domains, multiple beta-strands, multiple alpha and transmembrane helices. ZmOPT1, 5, and 6 are plasma membranes and the rest are endoplasmic reticulum localized. All ZmOPTs are distributed in six different chromosomes having significant phytohormone-responsive <em>cis</em>-elements might be due to their great roles in hormonal regulation in maize. The significant transport activity of these transporters plays a great role in biological processes, cellular components and molecular functions in maize during gene ontology analysis. Co-expression of five genes among eight OPTs with 56 genes might be due to their great role in regulating other genes in multiple signaling pathways or vice-versa. Significant tissue-specific and drought, salinity, nitrogen starvation, and heat stress induced <em>in silico</em> expression following real time PCR validation of <em>ZmOPT1, 7</em>, and <em>8</em> genes might guide to elucidate the potential roles of these transporters in specific tissues and abiotic stress tolerance. Hence, the findings of the research might guide plant biologists to develop new varieties of maize having higher efficiency of peptide and metal ion transport, balance, and abiotic stress tolerance. Findings of these structural and expression analyzes might guide the plant biologist for single transgenesis, or developing and transforming programming-based synthetic genetic circuits in maize for advancing research in peptide transport, metal hemostasis, and increasing abiotic stress tolerance in maize.</div></div>","PeriodicalId":21919,"journal":{"name":"South African Journal of Botany","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2024-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142572573","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A comprehensive review on ethno-pharmacological and phytochemical properties of selected species of genus Ophioglossum","authors":"Abdul Manan Yousaf ,&nbsp;Sehrish Imran ,&nbsp;Yamin Bibi ,&nbsp;Muhammad Hasnain ,&nbsp;Muhammad Imran Yousaf ,&nbsp;Abdul Qayyum","doi":"10.1016/j.sajb.2024.10.040","DOIUrl":"10.1016/j.sajb.2024.10.040","url":null,"abstract":"<div><div>There are roughly 100 species of Ophioglossum, Helminthostachys, Cheiroglossa, and Botrychium in the family Ophioglossaceae, which consists of these four genera. Due to the numerous therapeutic benefits of the phytochemical compositions found in Ophioglossum species, these plants are frequently utilized to cure a variety of ailments. This review includes a thorough analysis of the Ethnomedicines, phytochemistry, and pharmacological uses of the genus Ophioglossum, a member of the Ophioglossaceae family that includes 45–50 recognized species and is well known for its wide range of traditional uses, including food, folk medicine, wound healing, menstrual disorders, tissue repair properties, skin ulcers, anti-wrinkling, epistaxis, aphrodisiac, eye blepharitis. A thorough literature search from this study was conducted using several web searches as well as online records, including PubMed, Web of Science, Scopus, and Google Scholar etc. This genus demonstrates distinct benefits in both medicine and food. Ophioglossum species have been found to contain bioactive substances like flavonoids, homoflavonoids, flavonols, rhamnopyranoside, kaempferol total phenolics, proxy fatty acids, thermalic acids, ophioglonol, glucopyranoside, and pedunculosumosides that are responsible for the spectacular biological activities that have been observed in them including antioxidant, antimicrobial, anti-inflammatory, anti-HBV activity, wound healing, Insecticidal property, Alopecia treatment antidiarrheal and spasmolytic effect. This review discusses the significance of various Ophioglossum species in terms of their traditional medicinal applications, phytochemical makeup, and prospective pharmacological activities. In terms of pharmacology, this genus is less studied than other ferns because some of its species are rare. Therefore, more research should concentrate on the preservation, cultivation, and sustainable use of Ophioglossum species. Additionally, there is a humungous need to investigate this genus' biological activities.</div></div>","PeriodicalId":21919,"journal":{"name":"South African Journal of Botany","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2024-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142572575","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Extracts of Southern African aquatic and wetland plant species as effective tyrosinase inhibitors","authors":"Namrita Lall ,&nbsp;Karina Mariam Szuman ,&nbsp;Bonani Madikizela ,&nbsp;Anna-Mari Kok ,&nbsp;Marco Nuno De Canha","doi":"10.1016/j.sajb.2024.10.041","DOIUrl":"10.1016/j.sajb.2024.10.041","url":null,"abstract":"<div><div>South Africa harvests approximately 19 500 tonnes of medicinal plants annually for the treatment of various ailments and an additional 6000 tonnes is exported globally for the development and design of cosmetic and medicinal products. South Africa is home to 30 freshwater and marine ecological regions, however, medicinal plant species from these semi-aquatic and aquatic habitats are largely understudied in comparison to other biomes. The lack of knowledge and reported pharmacological activity of these species may be hindering the potential contribution to the herbal medicine and personal care markets. South Africa is Africa's largest market for cosmetic and personal care products and in 2018 this sector reported 3.2 billion US dollars in revenue. Eighteen (18) Southern African freshwater aquatic and wetland plant species were selected and screened for their potential as cosmeceutical ingredients by investigating their antibacterial, anti-tyrosinase and cytotoxicity. The extracts of <em>Erythrina zeyheri</em> and <em>Plantago longissima</em> exhibited antimycobaterial activity with MIC values of 125 µg/mL. Two extracts of the genus Cyperus, <em>C. marginatus</em> and <em>C. sexangularis</em> showed tyrosinase inhibition with IC₅₀ values of 75.03 and 64.26 µg/mL, respectively. <em>Carex rhodesiaca</em> and <em>Gunnera perpensa</em> both exhibited dual antimicrobial activity against <em>Cutibacterium acnes</em> with MIC values of 250 and 125 µg/mL, respectively and anti-tyrosinase activity with IC₅₀ values of 64.71 and 70.43 µg/mL. <em>Persicaria senegalensis</em> exhibited anti-tyrosinase activity with an IC₅₀ of 71.59 µg/mL. Fractionation of <em>P. senegalensis</em> yielded F14 with an IC₅₀ of 68.77 µg/mL against tyrosinase enzyme activity. Purification of F3 yielded (24S)-Stigmast-5,22(E)-dien-3-β-ol which is the first report of this compound from this species. This study provides scientific validation of the traditional use of the selected species and provides proof of concept for further investigations of these extracts as potential active ingredients in the personal care sector.</div></div>","PeriodicalId":21919,"journal":{"name":"South African Journal of Botany","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2024-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142572574","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Retraction notice: Proteomic modulation by arsenic and microplastic toxicity in the presence of iron oxide nanoparticles in wheat (Triticum aestivum L.) seedlings","authors":"Rana M. Alshegaihi ,&nbsp;Aishah Alatawi ,&nbsp;Maryam M. Alomran ,&nbsp;Fatma Mohamed Ameen Khalil ,&nbsp;Ammara Saleem","doi":"10.1016/j.sajb.2024.08.038","DOIUrl":"10.1016/j.sajb.2024.08.038","url":null,"abstract":"","PeriodicalId":21919,"journal":{"name":"South African Journal of Botany","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142552175","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}