• 제목/요약/키워드: Musa spp.

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Simplex PCR Assay for Detection of blaTEM and gyrA Genes, Antimicrobial Susceptibility Pattern and Plasmid Profile of Salmonella spp. Isolated from Stool and Raw Meat Samples in Niger State, Nigeria

  • Musa, Dickson A.;Aremu, Kolawole H.;Ajayi, Abraham;Smith, Stella I.
    • 한국미생물·생명공학회지
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    • 제48권2호
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    • pp.230-235
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    • 2020
  • The global evolution of antibiotic resistance has threatened the efficacy of available treatment options with ravaging impacts observed in developing countries. As a result, investigations into the prevalence of antibiotic resistance and the role of plasmids are crucial. In this study, we investigated the presence and distribution of blaTEM and gyrA genes, plasmid profiles, and the antimicrobial susceptibility pattern of Salmonella strains isolated from raw meat and stool sources across Niger State, Nigeria. Ninety-eight samples, comprising 72 raw meat and 26 stool samples, were screened for Salmonella spp. The antimicrobial susceptibility of Salmonella isolates to 10 commonly used antimicrobial agents was determined using the KirbyBauer disc diffusion method. Isolates were further analyzed for plasmids, in addition to PCR amplification of beta-lactamase (blaTEM) and gyrA genes. A total of 31 Salmonella spp. were isolated, with 22 from raw meat (70.97%) and 9 from stool (29.03%). Salmonella spp. with multiple resistance patterns to ceftazidime, cefuroxime, ceftriaxone, erythromycin, ampicillin, cloxacillin, and gentamicin were detected. Ofloxacin and ciprofloxacin were found to be the most effective among the antibiotics tested, with 67.7% and 93.5% susceptible isolates, respectively. Nine (29.03%) isolates harbored plasmids with molecular sizes ranging between 6557 bp and 23137 bp. PCR amplification of gyrA was detected in 1 (3.23%) of the 31 isolates while 28 isolates (90.32%) were positive for blaTEM. This study shows the incidence of antibiotic resistance in Salmonella isolates and the possible role of plasmids; it also highlights the prevalence of ampicillin resistance in this local population.

Chlorophyll contents and expression profiles of photosynthesis-related genes in water-stressed banana plantlets

  • Sri Nanan Widiyanto;Syahril Sulaiman;Simon Duve;Erly Marwani;Husna Nugrahapraja;Diky Setya Diningrat
    • Journal of Plant Biotechnology
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    • 제50권
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    • pp.127-136
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    • 2023
  • Water scarcity decreases the rate of photosynthesis and, consequently, the yield of banana plants (Musa spp). In this study, transcriptome analysis was performed to identify photosynthesis-related genes in banana plants and determine their expression profiles under water stress conditions. Banana plantlets were in vitro cultured on Murashige and Skoog agar medium with and without 10% polyethylene glycol and marked as BP10 and BK. Chlorophyll contents in the plant shoots were determined spectrophotometrically. Two cDNA libraries generated from BK and BP10 plantlets, respectively, were used as the reference for transcriptome data. Gene ontology (GO) enrichment analysis was performed using the Database for Annotation, Visualization, and Integrated Discovery (DAVID) and visualized using the Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway prediction. Morphological observations indicated that water deficiency caused chlorosis and reduced the shoot chlorophyll content of banana plantlets. GO enrichment identified 52 photosynthesis-related genes that were affected by water stress. KEGG visualization revealed the pathways related to the 52 photosynthesisr-elated genes and their allocations in four GO terms. Four, 12, 15, and 21 genes were related to chlorophyll biosynthesis, the Calvin cycle, the photosynthetic electron transfer chain, and the light-harvesting complex, respectively. Differentially expressed gene (DEG) analysis using DESeq revealed that 45 genes were down-regulated, whereas seven genes were up-regulated. Four of the down-regulated genes were responsible for chlorophyll biosynthesis and appeared to cause the decrease in the banana leaf chlorophyll content. Among the annotated DEGs, MaPNDO, MaPSAL, and MaFEDA were selected and validated using quantitative real-time PCR.

Pathological Status of Pyricularia angulata Causing Blast and Pitting Disease of Banana in Eastern India

  • Ganesan, Sangeetha;Singh, Hari Shankar;Petikam, Srinivas;Biswal, Debasish
    • The Plant Pathology Journal
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    • 제33권1호
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    • pp.9-20
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    • 2017
  • Incidence of leaf blast on nursery plants and pitting disease on maturing banana bunches has been recorded in banana plantations during rainy season in Eastern India during 2014 to 2015. Taxonomical identification as well as DNA sequence analysis of the internal transcribed spacer region of fungus isolated from affected tissue culture derived plantlets and fruits confirmed the pathogen to be Pyricularia angulata Hashioka "in both the cases". Koch's postulates were proved on young plantlets as well as on maturing fruits of cv. Grand Naine under simulated conditions. Evolutionary history was inferred and presented for our P. angulata strain PG9001 with GenBank accession no. KU984740. The analysis indicated that the P. angulata is phylogenitically distinct from other related species related to both Pyricularia and Magnaporthe. Detailed symptoms of blast lesions on young leaves, transition leaves, mid rib, petioles, peduncle, maturing bunches, bunch stalks and cushions were documented. Notably, the distinct small pitting spots on maturing bunches reduced the visual appeal of mature fruits. Appearance of pitting symptoms on fruits in relation with age of fruits and their distribution pattern on bunch and fingers was also documented in detail. Further, the roles of transitory leaves, weed hosts, seasonality on disease occurrence have also been documented.

Effect of gamma irradiation on the morphological and physiological variation from In vitro individual shoot of banana cv. Tanduk (Musa spp.)

  • Abdulhafiz, Ferid;Kayat, Fatimah;Zakaria, Suhana
    • Journal of Plant Biotechnology
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    • 제45권2호
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    • pp.140-145
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    • 2018
  • Inducing genetic and morphological variation through conventional method is very difficult. Therefore, mutation induction through in vitro technology brings numerous advantages over the conventional breeding. Thus, the individual shoots (1 ~ 2 cm) were irradiated with gamma rays (10 ~ 70 Gy). The result revealed that the explants treated with higher doses (40, 50, 60, and 70 Gy) showed deleterious effects of ionizing radiation. The highest survival rate among ${\gamma}$ treated explants recorded was 71% in 10 Gy treatments while the lowest survivality was 15% in 70 Gy. Lethal dose 50% ($LD_{50}$) dose was found to be 33 Gy. In the in vitro condition, rooting reponse showed that increase in gamma irradiation dose resulted in the inhibition of root growth. Meanwhile, non-treated explants had the best rooting ability with the maximum number of root per explant (20) within a short period of time (6 days), with the highest root length of (15.1 cm). The longer period in rooting (12 days) and lowest number of root per explant (8) with shortest root length (10.1 cm) were recorded at 30 Gy treatment. The highest shoot length (13.6 cm) was observed at control treatment and the shortest shoot length (10.4 cm) was observed at 30 Gy. In the nursery, lowest leaf number (5) was observed at 30 Gy compared with other treatments. The highest chlorophyll content (49.8) was recorded at 10 Gy treated seedling. Irradiated explants with 10 Gy found to be superior over the control treatment and had positive effects in main growth parameters such as chlorophyll content.

Protein and hematological evaluations of infant formulated from cooking banana fruits(Musa spp, ABB genome) and fermented bambara groundnut(Vigna subterranean L. Verdc) seeds

  • Ijarotimi, Oluwole Steve
    • Nutrition Research and Practice
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    • 제2권3호
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    • pp.165-170
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    • 2008
  • Protein-energy malnutrition is regarded as one of the public health problems in developing countries as a result of poor feeding practices due to poverty. This study, therefore, aimed at evaluating nutritional quality of a potential weaning food formulated from locally available food materials. The cooking banana fruit(CB) and bambara groundnut seeds(BG) were purchased from local market in Akure, Ondo State, Nigeria. The CB and BG were processed into flours, mixed in ratios of 90:10, 80:20, 70:30 and 60:40 and subjected into proximate, sensory and biochemical analyses using standard procedures. Nutrend(a commercial formula) and ogi(corn gruel, a traditional weaning food) were used as control. The nutritient composition(g/100 g) of the food samples were ranged as follows: moisture 2.94-6.94, protein 7.02-16.0, ash 1.76-2.99, fat 0.76-8.45, fibre 1.52-3.75, carbohydrate 63.84-88.43 and energy 1569.8-1665.7 kcal. The biological value(BV), net protein retention(NPR), protein efficiency ratio(PER) and feed efficiency ratio(FER) of the experimental food samples were significantly(p<0.05) lower than nutrend, but higher than ogi. The haematological variables of rats fed with formulated food samples, commercial formula(nutrend) and traditional weaning food(ogi) were not significantly(p>0.05) influenced by the dietary treatment. However, the values obtained for red blood cell(RBC), white blood cell(WBC), pack cell volume(PCV) and erythrocyte sedimentation rate(ESR) were higher in the experimental food samples than the commercial food. The growth rate of animals fed with experimental food samples were lower than those fed with the nutrend, but higher than those fed with ogi. In conclusion, the nutritional quality of CB and fermented BG mix of 60:40 ratio was better than ogi; and comparable to the nutrend. This implies that it can be used to replace low quality traditional weaning food and the expensive commercial weaning formula.

전통조경에서 분(盆)을 이용한 식물의 활용과 애호 행태 (Plant Species Utilization and Care Patterns Using Potted Plants in the Traditional Gardening)

  • 김명희
    • 한국전통조경학회지
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    • 제31권3호
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    • pp.61-74
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    • 2013
  • 본 연구는 선조들이 궁궐이나 사가(私家)의 정원에 분을 이용하여 식물을 완상한 실증적인 사례들에 대하여 고문헌과 고전시문을 고찰하고 해석하여, 분에 식재된 식물소재와 분식물의 수형 및 식재기법 그리고 분식물의 배치와 애호행태 등을 고찰하였다. 연구의 방법은 분식물을 주제로 한 시문과 회화를 고찰하고 해석하는 기술(description)적 연구방법을 사용하였다. 본 연구의 결과를 요약하면 다음과 같다. 첫째, 분에 식재되어 애용된 식물로 목본류는 매화나무와 소나무를 비롯하여 만년송, 대나무, 동백나무, 석류나무, 치자나무 등 19종이고, 초본류는 국화와 연(蓮)을 비롯하여 12종이다. 둘째, 수형을 인위적으로 각별하게 가꾼 수종은 매화나무와 소나무로 두 식물은 왕피나 규반, 반간 등 줄기의 굴곡이 심한 생김새의 수형을 만들었으며, 기이한 등걸에 접붙인 매화나무와 괴석 위에 뿌리를 뻗게 석부하여 수형을 가꾼 소나무 분재도 있다. 분재의 수형미를 위해 노송에 솔방울을 달거나 줄기에 담쟁이덩굴을 식재하기도하고, '종분취경'이라 하여 분토에 이끼가 생기게 하는 부가적인 방법도 활용하였다. 식재기법으로 수경재배, 석부작, 숯부작, 모아심기 등도 시문에 표현되어 있다. 셋째, 분식물이 배치된 외부공간으로는 궁궐의 연조공간이나 연침공간, 사가의 건물 주변과 마당, 섬돌 위 등에 놓여 점경물 역할을 하였다. 분식물은 서재나 사랑방의 탁자나 책상, 문갑 위, 베갯머리 등에 놓여 실내공간의 소품 역할을 하며, 선비들은 이들 분식물의 고유의 특성과 상징성에서 의미를 취하여 즐겼다. 넷째, 분매(盆梅)의 개화시기에는 시회를 열어 매화를 감상하고 술을 마시며 시작활동을 하였으며, 국화 개화시는 술잔에 띄우거나 그림자놀이 등 풍류를 즐겼다. 다섯째, 분식물은 궁궐이나 사대부들의 아취 있는 모임이나 결혼식과 제사 등의 행사에서 점경물의 역할을 하였다. 여섯째, 분식물은 국가 간의 공물로 사용되기도 하고, 왕에게 드리는 진상품이나 왕의 하사품으로 이용되기도 하였다. 또한 선비들 사이에도 분식물을 주고받은 사례가 많으며, 목은 이색의 목은시고 에 분매를 선물한 최초의 기록이 있다. 일곱째, 분매와 분국, 분치, 분연 및 분에 심은 수선화 등의 개화시에 이들 식물의 고유의 향기를 즐기며, 시문으로 표현하였다. 여덟째, 동백나무, 서향화, 치자나무, 귤나무, 대나무, 석류나무, 해당화, 파초 등 남부수종이나 외래수종 및 내한성이 약한 종은 엄동설한에 중부이북지방의 실내에서 푸르름을 즐기기 위하여 분에 심어 활용되었다.

조선시대 화훼식물의 이용과 상징성에 관한 연구 (A Study on the Utilization and Symbolizes of the Joseon Dynasty Flowering Plant)

  • 김승민
    • 한국전통조경학회지
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    • 제32권2호
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    • pp.134-147
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    • 2014
  • 본 연구는 조선시대의 고문헌과 옛 그림에서 나타나는 화훼식물을 재료로 궁궐정원과 민가정원에 나타나는 지피식물의 이용특성과 상징성을 분석하였다. 이를 통해 문화재 지역 및 현대 조경공간에 활용을 위한 기초자료를 제공하는 것을 목적으로 하였으며, 결과는 다음과 같이 요약될 수 있었다. 첫째, 조선시대 고문헌과 옛 그림에서 출현한 화훼식물의 출현빈도는 매화, 연꽃, 모란, 국화, 파초, 영산홍, 장미, 진달래, 작약 등이 10회 이상으로 높은 빈도를 나타내는 것으로 조사되었으며, 다음으로 비교적 출현 빈도가 높은 식물은 치자, 석류(8회), 패랭이꽃, 포도(7회), 난초, 정향, 봉선화, 원추리, 맨드라미, 무궁화, 철쭉류, 창포, 접시꽃, 황매화, 유자(5회), 부용, 동자꽃, 금전화, 베고니아, 해바라기, 양귀비, 수선화, 서향화, 옥잠화 등(4회)이였으며, 그 외에는 29분류군 총 81종의 화훼식물이 조사되었다. 둘째, 궁궐과 민가에서 사용되었던 조선시대 화훼식물의 이용은 분에 심어 가까이 두고 완상하거나 화단, 화계, 화오, 연못 및 담장주변 등에 주로 식재하였음을 고문헌의 기록과 정원도 및 민화의 그림을 통해서 확인할 수 있었다. 그러나 영산홍의 식물재료에 대한 기록은 조선왕조실록의 내용에서 다루어지고 연구되어진 민가정원의 관련된 문헌(6점)이나 옛 그림(766점)에서 출현한 내용이 없는 것으로 보아 조선시대 대중에게 유통이 극히 일부에 국한되었던 것으로 판단된다. 셋째, 조선시대 화훼식물 상징성은 유교의 절개, 군자, 청빈, 충효사상을 나타낸 경우, 도교의 신선사상이나 불로장생을 나타내는 경우, 민간신앙의 부귀영화나 만사형통을 기원하는 경우로 구분할 수 있었다. 이는 식물을 덕성함양의 대상이나 기복의 대상으로 여겼음을 알 수 있다. 넷째, 조선시대 이용했던 화훼식물은 선비가 닮고 싶은 이상과 지향하는 정신세계와 일치하였기 때문에 선조들의 상징으로 나타났다고 본다. 조선시대 이용하였던 화훼식물은 수목종류에 따른 보편적인 판단기준이 아닌 다양하고 주관적이며, 또한 정신적인 측면으로 접근하여 해석할 때에 조선시대 화훼식물의 조경공간에서의 활용범위 또한 넓어질 것으로 사료된다.