Endophytic Bacteria Isolated from Ageratum conyzoides L. and Mikania micrantha Kunth of Mizoram, Northeast India
- PDF / 589,313 Bytes
- 4 Pages / 595.276 x 790.866 pts Page_size
- 94 Downloads / 210 Views
SHORT COMMUNICATION
Endophytic Bacteria Isolated from Ageratum conyzoides L. and Mikania micrantha Kunth of Mizoram, Northeast India Marcy D. Momin1
•
Kalibulla Syed Ibrahim2
Received: 24 September 2019 / Revised: 24 February 2020 / Accepted: 29 July 2020 The National Academy of Sciences, India 2020
Abstract The objective of the present study was (1) to isolate endophytic bacteria from Ageratum conyzoides L. and Mikania micrantha Kunth of shifting cultivation in Mizoram, (2) screen in vitro their potential for plant growth-promoting (PGPR) activities and (3) to identify endophytic bacteria positive for PGPR. A total of 9 endophytic bacteria showed positive for PGPR properties. Potential PGPR endophytic bacteria were selected for further characterization of their genotype 16S rRNA sequencing. 16S rRNA sequencing revealed that isolated bacteria belong to six different genus and five families. This study helps us to understand the diversity of the endophytic bacteria from the selected plants of shifting cultivation and strengthen our research on endophytes of their potential for PGPR activities. Survival of endophytic bacteria under unfavourable conditions is an indicative of their resistance for biotic and abiotic stresses. Keywords Endophytic bacteria Weed plant Shifting cultivation PGPR activities
Significance statement Artificial chemicals for enhancing crop yield have largely affected food quality, human and environment. However, demand for agriculture is expanding rapidly with increase in population. Endophytic bacteria from jhum cultivation areas enhanced plant growth& Marcy D. Momin [email protected] 1
Department of Forestry, Mizoram University, Aizawl, Mizoram 796004, India
2
Department of Biotechnology, Mizoram University, Aizawl, Mizoram 796004, India
promoting properties. Bacteria associated with plants under jhum fallow areas have capacity to produce plant growthpromoting properties. Potential plant growth-promoting bacterial strains can be used to support the plant growth and overall yield of crop plants under unfavourable environmental conditions for agricultural crops. Therefore, potential PGPR strains may help to use as alternative bioinoculants in the sustainable agricultural development. Endophytic microorganisms reside in the internal tissues in a symbiotic or mutualistic association with their host plant without causing apparent symptoms of infection [1]. Endophytes are ubiquitous in nature, and it is commonly speculated that they contribute to the evolutionary fitness of their host by producing a range of secondary metabolites, which provide resistance against diseases and survival [2]. Endophytes inside a plant may either become localized at the point of entry or spread throughout the plant [3]. Endophytic bacteria are very important for their capacity to promote plant growth through direct mechanisms or by acting as biocontrol agents (indirect mechanism) [4]. Ageratum conyzoides and Mikania micrantha belong to Asteraceae family are commonly available weed plant in India [5]
Data Loading...
