1Department of Agricultural Microbiology, Faculty of Agriculture, Annamalai University, Chidambaram, Tamil Nadu, India
2Assistant Plant Pathologist, Regional Coffee Research Institute, Thandigudi, Dindugal, Tamil Nadu, India
*Corresponding author: sharansaroo99@gmail.com (ORCID ID: 0000-0001-5702-9777)
Online Published on 27 July, 2023.
The study aimed to identify and determine the endophytic bacteria of coffee leaves (Coffea arabica L.) having multifunctional plant growth-promoting traits. Coffee leaves were obtained from the plants grown at the Regional Coffee Research Station of Lower Pulney hills, Thandigudi. Examination of seven distinct endophytic bacterial isolates was characterized morphologically and biochemically. Endophytic bacterial isolates have shown various levels of resistance in recent research. Plant growth-promoting traits include nitrogen fixation, phosphate solubilization, and potassium mobilization. Also, the endophytic microbiota were the potential plant symbionts for conferring biotic and abiotic stress tolerance. Based on the results, the two efficient isolates had undergone 16S rRNA sequencing, and the results showed that the SE4 was Chryseobacterium indologeness, IMP2 was Pseudomonas putida. It has been found that both possessed a high range of antagonistic activity in terms of percent growth inhibition (GI%) against Pythium spp. Macrophomina spp. and Fusarium spp. And the developed module could be recommended as an effective biocontrol agent against disease-causing pathogens and an excellent plant growth regulator for sustainable production of various crops, without hamperingsoil health and fertility.
• Plant growth promoting potential of endophytic bacterial isolates was assessed in coffee leaves.
• The investigated isolates showed an effective antagonism against a wide range of phytopathogens.
Coffee, Endophytic bacteria, Plant growth promotion, Antagonistic activity
