Three rhizobacteria differentially change endogenous hormones and yield in four rice cultivars

Journal article

Authors/Editors

RUJIRA DOLPHEN

Strategic Research Themes

Other (Strategic Research Themes)

Publication Details

Author list: Nashrulloh, Maulana Malik; Dolphen, Rujira; Thiravetyan, Paitip;

Publisher: Elsevier

Publication year: 2022

Volume number: 24

ISSN: 2452-2198

eISSN: 2452-2198

URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85139827399&doi=10.1016%2fj.rhisph.2022.100614&partnerID=40&md5=4aa76c4188c03b572138571e752404ce

Languages: English-Great Britain (EN-GB)

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Abstract

Four Thai rice cultivars Pathum Thani 1, RD41, RD57, and RD85 were investigated to observe their responses to Plant Growth Promoting Bacteria Bacillus sp. N7 (N7), Lysinibacillus sp. N5 (N5), and Bacillus thuringiensis B20 (B20). A pot experiment with 5 plants pot−1 and four replicates was used. This study reported that the combination of plant growth promoting bacteria and optimized fertilization play role in crop yield enhancement by modulating endogenous levels of indole-3-acetic acid, salicylic acid, and tryptophan. Endogenous levels of indole-3-acetic acid, salicylic acid, tryptophan, and grain-yield-related components and grain yield of four Thai rice cultivars Pathum Thani 1, RD41, RD57, and RD85 were measured. Significant (p < 0.05) increase in grain yield observed at PTT1, RD41, and RD85 (40.13–51.18 g pot−1, 43.33–54.05 g pot−1, 47.80–69.08 g pot−1, respectively), but no significant (p > 0.05) grain yield increase in RD57 (48.75–51.75 g pot−1) when compared to uninoculated conditions. Significant (p < 0.05) endogenous indole-3-acetic acid, salicylic acid, and tryptophan level changes compared to the uninoculated control were observed across four Thai rice cultivars. Consortia development to enhance the plant growth promoting bacteria capability and larger field trials will be performed in the future to further investigate the efficacy of the bacteria in the real-field application. © 2022 Elsevier B.V.

Keywords

Bacillus