Growth stage and tissue specific colonization of endophytic bacteria having plant growth promoting traits in hybrid and composite maize (Zea mays L.)

Microbiological Research
Premsing Shivsing Marag, Archna Suman

Abstract

Maize, a crop cultivated worldwide, was investigated for plant tissue and crop stage specific colonization of endophytic bacteria. Such bacterial interactions have high potential to enhance maize grain yield by means of biological nitrogen fixation and/or plant growth promoting activities. In this study endophytic bacteria were isolated from a hybrid PEEHM-5 and composite PC-4 maize varieties using root, stem and leaf tissues of plants at vegetative, flowering and maturity stages of growth. PEEHM-5 harbored higher endophytic bacterial population than PC-4 at all growth stages, with highest in roots and at flowering stage. Morphologically 188 different endophytic isolates (82 from PEEHM-5, 106 from PC-4) were screened for plant growth promoting attributes viz. P, K, Zn solubilization, production of hormones, siderophore, ACC deaminase, HCN, biological nitrogen fixation and biocontrol of two maize fungal pathogens. Thirty one potential PGP isolates on RFLP analysis of their amplified 16S rRNA gene, were clustered in 13 phylogenetic groups. On sequencing and blasting of amplified 16S rRNA gene of representative isolates from each group identified PC-4 endophytic bacterial isolates as Bacillus aryabhattai, Pantoea cypripedii, Bacil...Continue Reading

Citations

Mar 23, 2019·Journal of Basic Microbiology·Zeeshanur RahmanVed Pal Singh
Sep 24, 2020·Archives of Microbiology·Marzieh BakhtiyarifarKhosro Mehdi Khanlou
Oct 10, 2021·Brazilian Journal of Microbiology : [publication of the Brazilian Society for Microbiology]·Josefina Duran-BedollaHumberto Barrios-Camacho
Oct 5, 2020·Microbiological Research·Paula Sperotto Alberto FariaJuliana de Fátima Sales

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