Related Experiment Video
Updated: Jul 2, 2026

Divergence of Root Microbiota in Different Habitats based on Weighted Correlation Networks
Published on: September 25, 2021
Genotypic and phenotypic diversity of Anabaena isolates from diverse rice agro-ecologies of India
Saswati Nayak1, Radha Prasanna, Boddupalli Maruthi Prasanna
1Division of Microbiology and Centre for Conservation and Utilization of Blue-Green Algae CCUBGA, Indian Agricultural Research Institute IARI, New Delhi, India.
Abstract:
The genus Anabaena is one of the commonly observed genera in the rice fields in South-east Asia. Diversity analyses of a set of 70 Anabaena strains (including 67 strains isolated from diverse rice agro ecologies of India, and three International Reference/Type strains), was carried out using morphological and molecular datasets. The pattern of growth in liquid and solid medium and microscopic observations revealed tremendous diversity in the Anabaena germplasm analysed. The species wise distribution in different soil types and soil pH revealed that Anabaena iyengarii was present at pH ranging from 5.5-8.5 and all the species of Anabaena except A. oscillarioides were present in alluvium soils. Molecular profiling using primers based on HipTG, STRR(mod) and STRR1A sequences generated specific fingerprints for individual isolates. STRR1A was observed to be the most informative and useful for differentiating the isolates. Analyses of a combined dataset, including both morphological and molecular data, proved highly effective in discerning the genetic relationships among the 70 Anabaena strains. The present study provided useful information for the development of a comprehensive database based on the distribution of Anabaena strains in diverse agro ecologies of India and identified useful primers for PCR based differentiation of isolates.
More Related Videos
Related Concept Videos
Diversity of Archaea I
Diversity of Archaea IV
Diversity of Archaea III
Diversity of Archaea II
Diversity of Protists IV
Diversity of Protists I

