ISOLATION, IDENTIFICATION AND ANTAGONISTIC POTENTIAL OF STREPTOMYCES ANSCA22 FOR BIOCONTROL OF RHIZOCTONIA BATATICOLA INFECTION OF SOYBEAN.

Autor: Khendkar, Amarja S., Deshpande, Aarti R.
Předmět:
Zdroj: Plant Archives (09725210); Oct2020, Vol. 20 Issue 2, p701-707, 7p
Abstrakt: Streptomyces ANSCa22 isolated from rhizospheric soil of Capsicum annuum demonstrated antifungal activity against the pathogen Rhizoctonia bataticola by dual culture technique. Streptomyces ANSCa22 treatment on Rhizoctonia bataticola inoculated Soybean seeds could control Rhizoctonia bataticola infection of Soybean in pot study which was evident from the significant increase in the values of average shoot height, pod number, seed weight and plant dry weight after the treatment. Streptomyces ANSCa22 treatment of normal soybean seeds without any pathogen inoculation also resulted in positive effect on three out of four tested plant growth parameters as compared to control. Microscopic examination of Streptomyces ANSCa22 revealed typical features of Streptomyces. Partial sequencing of rRNA gene identified ANSCa22 as Streptomyces rochei. This strain was compatible with Bradyrhizobium japonicum, exhibited tolerance to calcium carbonate and calcium sulphate upto 5% concentration and indicted varying degree of growth at 7 to 10 pH range. Streptomyces rochei ANSCa22 was positive for amylase enzyme. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index