Mikania Micrantha
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2021 ◽  
Vol 2 (1) ◽  
pp. 93-98
Mismawarni Srima Ningsih

Abstrak   Sembung rambat merupakan tanaman introduksi yang memiliki daya invasi tinggi, sehingga menjadi gulma di pertanaman kangkung. Penelitian ini bertujuan untuk melihat pengaruh kompetisi antara gulma sembung rambat dengan tanaman kangkung. Menggunakan metode penelitian eksperimen dengan Rancangan Acak Lengkap 5x5. Perlakuan yang diberikan adalah (A) Kangkung, (B) Kangkung + 1 Sembung rambat, (C) Kangkung + 2 Sembung rambat, (D) Kangkung + 3 Sembung rambat,  (E) Kangkung + 4 Sembung rambat. Bila perlakuan mempengaruhi hasil kangkung, analisis dilanjutkan dengan uji lanjut Duncan New Multiple Range Test (DNMRT) pada taraf 5%. Hasil menunjukan keberadaan sembung rambat di pertanaman kangkung darat dapat menurunkan tinggi, jumlah daun, diameter batang dan bobot kering kangkung. Penurunan semakain besar dengan bertambahnya jumlah sembung rambat pada pertanaman akibat terjadinya kompetisi terhadap faktor lingkungan yang sama. Dari penelitian dapat disimpulkan bahwa sembung rambat yang berada di pertanaman kangkung merupakan gulma yang dapat menurunkan hasil panen dan keberadaannya dipertanaman harus dikendalikan.    

Insects ◽  
2021 ◽  
Vol 12 (10) ◽  
pp. 927
Wenjing Wu ◽  
Yahui Hou ◽  
Shijun Zhang ◽  
Yong Chen ◽  
Wenhui Zeng ◽  

Effective approaches to exploiting the biomass of the abundant invasive weed Mikania micrantha Kunth are limited. Termites have been a focus of significant attention as mediators of biomass-processing owing to their ability to digest lignocellulose. Here, the GC/TOF-MS approach was employed to assess the effects of a diet composed of M. micrantha leaves on Coptotermes formosanus workers, with the growth performance of these workers also being assessed. The workers increased their dietary intake when fed M. micrantha leaves, with a concomitant gradual increase in mortality rate. A total of 62 differentially abundant metabolites and nine significantly affected pathways were found when comparing termites fed M. micrantha leaves to pinewood. Key metabolites, including carbohydrates, polyols, 4-hydroxyphenylacetic acid, and their related metabolic pathways, suggested that termites can digest and utilize M. micrantha-derived lignocellulose. However, changes in the tryptophan metabolism, tyrosine metabolism, and sphingolipid metabolism suggest an adverse effect of M. micrantha leaves on antioxidant activity and signal transduction in termites. Overall, this study identified the key metabolites and pathways associated with the response of these termites to dietary changes and the effect of M. micrantha on termites.

2021 ◽  
Atiqur Rahman Bora ◽  
Dasi Sunil Babu ◽  
Sita Chetry ◽  
Sontara Kalita

The world’s problematic perennial weed Mikania micrantha hampers in crop production and causes enormous losses due to its interference. Management of M. micrantha by mechanical and chemical methods has not met with any reasonable success. So, it has become a target for classical biological control. Numerous natural indigenous plant species, fungi and insects were tried as bio-control agents for effective control of M. micrantha. However, along with bio-control, appropriate mechanical, chemical and cultural methods are required to be integrated for controlling it. Thus, integrated management approaches for control of M. micrantha should be evolved against this invasive weed in long run.

2021 ◽  
Vol 10 (2) ◽  
pp. 280-290
Shayne Aira B Baguingan ◽  
Romulo R Macadangdang Jr ◽  
Jovigail P Bermejo ◽  
Patricia E Bondoc ◽  
Mary Louise L Cartina ◽  

2021 ◽  
Bhuban Ruidas ◽  
Tapas Kumar Sur ◽  
Chitrangada Das Mukhopadhyay ◽  
Koel Sinha ◽  
Sutapa Som Chaudhury ◽  

Abstract Recent evidence concreted that maximum energy in metastatic breast cancer progression is supplied by fatty acid oxidation (FAO) governed by a rate-limiting enzyme, carnitine palmitoyltransferase 1 (CPT1). Therefore, active limitation of FAO could be an emerging aspect to inhibit breast cancer progression. Herein, for the first time we have introduced Quercetin (QT) from a non-dietary source (Mikania micrantha Kunth) to seize the FAO in triple-negative breast cancer cells (TNBC) through an active targeting of CPT1. Apart from successive molecular quantification, QT has resulted a significant reduction in the intracellular mitochondrial respiration and glycolytic function limiting extensive ATP production. In turn, QT has elevated the reactive oxygen species (ROS) and depleted antioxidant level to induce anti-metastatic and cell apoptosis activities. Real-time quantitative reverse transcription-polymerase chain reaction (qRT-PCR) investigated the FAO associated gene expression resulting significant depletion in FAO which were further confirmed through the successful in-silico molecular docking prediction for active binding potentiality of QT to CPT1. Subsequently, QT has shown an excellent in-vivo antitumor activities through the altered lipid profile and oxidative stress healing capabilities in female breast cancer BALB/c mice model. Therefore, all the obtained data significantly grounded the fact that QT could be a promising metabolism-targeted breast cancer therapeutics.

2021 ◽  
Vol 2021 ◽  
pp. 1-12
Rika Indri Astuti ◽  
Muhammad Eka Prastya ◽  
Irmanida Batubara ◽  
Eka Budiarti ◽  
Aulia Ilmiyawati

Research on antioxidants has been gaining worldwide attention because of their essential applications for medicinal purposes. In this study, we conducted bioprospecting of six Asteraceae plants as the source of antiaging and antioxidant agents. Water and chloroform fractions from Ageratum conyzoides L., Dichrocephala integrifolia (L.f.) Kuntze, Galinsoga parviflora (Cav.), Mikania micrantha Kunth, Sphagneticola trilobata (L.) Pruski, and Synedrella nodiflora L. were collected and assayed for their in vitro antioxidant activities and potential antiaging properties using the yeast Schizosaccharomyces pombe as the model organism. Based on the in vitro assay, the water fractions of S. trilobata showed a strong antioxidant activity. Interestingly, all treatment solutions promoted the stress tolerance phenotype of S. pombe to strong H2O2-induced oxidative stress conditions. Moreover, compared with the treatments without plant extract/fraction, all extract and fraction treatments, except the chloroform fractions of A. conyzoides, promoted yeast cell longevity. Strong induction of mitochondria activity was found following the treatments with the extracts and fractions of S. nodiflora, D. integrifolia, and M. micrantha and likely mimicked the calorie restriction-induced lifespan. Interestingly, S. nodiflora water fractions significantly upregulated the mRNA transcripts of the Pap1-mediated core environmental stress response, namely, ctt1 gene in S. pombe. These data indicated that the fractions of Asteraceae plants had potential antioxidant and antiaging activities through various cellular modulations. S. nodiflora water fraction has been shown to have antioxidant and antiaging activities in S. pombe, by modulating stress tolerance response, inducing mitochondrial activity, and increasing the ctt1 gene expression. Compounds analysis identified that S. nodiflora water fraction contained some primarily compounds including oxyphyllacinol, valine, and sugiol.

2021 ◽  
Vol 47 (3) ◽  
pp. 513-519
Subhajit Roy ◽  
Aniruddha Singhamahapatra ◽  
Suvankar Dutta

Vagrans egista (Cramer, 1780) is reported for the first time from southern part of West Bengal, India. The Raygar forest of Bankura district in the plateau region is the second locality for the reported species in West Bengal, which extends the distribution range (aerial distance: 525 km) of the species from its known locality, Buxa Tiger Reserve of Alipurduar district in the state. This paper also reports occurrence of Rapala pheretima and Gerosis bhagava in Bankura district for the first time. Importance of an invasive plant, Mikania micrantha has also been discussed as a nectaring plant of butterflies.

Genes ◽  
2021 ◽  
Vol 12 (8) ◽  
pp. 1279
Xiaoxian Ruan ◽  
Zhen Wang ◽  
Yingjuan Su ◽  
Ting Wang

A long-standing and unresolved issue in invasion biology concerns the rapid adaptation of invaders to nonindigenous environments. Mikania micrantha is a notorious invasive weed that causes substantial economic losses and negative ecological consequences in southern China. However, the contributions of gene flow, environmental variables, and functional genes, all generally recognized as important factors driving invasive success, to its successful invasion of southern China are not fully understood. Here, we utilized a genotyping-by-sequencing approach to sequence 306 M. micrantha individuals from 21 invasive populations. Based on the obtained genome-wide single nucleotide polymorphism (SNP) data, we observed that all the populations possessed similar high levels of genetic diversity that were not constrained by longitude and latitude. Mikania micrantha was introduced multiple times and subsequently experienced rapid-range expansion with recurrent high gene flow. Using FST outliers, a latent factor mixed model, and the Bayesian method, we identified 38 outlier SNPs associated with environmental variables. The analysis of these outlier SNPs revealed that soil composition, temperature, precipitation, and ecological variables were important determinants affecting the invasive adaptation of M. micrantha. Candidate genes with outlier signatures were related to abiotic stress response. Gene family clustering analysis revealed 683 gene families unique to M. micrantha which may have significant implications for the growth, metabolism, and defense responses of M. micrantha. Forty-one genes showing significant positive selection signatures were identified. These genes mainly function in binding, DNA replication and repair, signature transduction, transcription, and cellular components. Collectively, these findings highlight the contribution of gene flow to the invasion and spread of M. micrantha and indicate the roles of adaptive loci and functional genes in invasive adaptation.

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