Fate of invasive weed Mikania micrantha Kunth using vermitechnology employing three monoculture of earthworm species

2021 ◽  
pp. 100827
Heena Kauser ◽  
Meena Khwairakpam
ES Abhilash ◽  
Sheeja P Parayil ◽  
Brijesh Sathian ◽  
AR Raju ◽  
NA Bilal ◽  

Out of the 4 alien invasive species three are of high risk namely Mikania micrantha, Chromolaena odorata and Mimosa diplotricha. Lantana camara is found to be medium risk. The farmers spent a considerable amount of money nearly Rs 4800 per year for one acre land pertaining to mechanical weeding of invasive species. The herbicide is widely used by farmers to control the weeds are capable to cause various health problems including genetic aberration. So an effective and comprehensive weed management strategy have to be developed in the country to combat the threats of IAS in agriculture fields. DOI: http://dx.doi.org/10.3126/apjeesd.v1i1.9509Asia Pacific Journal of Environment Ecology and Sustainable Development 2013; 1: 32-35

2017 ◽  
Vol 25 (12) ◽  
pp. 1267-1275
Jiayi Wang ◽  
Hanxia Yu ◽  
Yufang Lai ◽  
Fanghao Wan ◽  

2010 ◽  
Vol 98 (1) ◽  
pp. e1-e3 ◽  
Y. Yan ◽  
Y. Huang ◽  
X. Fang ◽  
L. Lu ◽  
R. Zhou ◽  

2019 ◽  
Vol 2 (2) ◽  
pp. 06-12
Mousami Poudel ◽  
Prabin Adhikari ◽  
Kanti Thapa

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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