Evaluation of the change of gene expression related to salinity tolerance in rice under the support of plant growth- promotingendophytic bacteria Bacillus aryabhattai RL7
Keywords:
Endophytic bacteria, Salt tolerance, ACC deaminase, Bacillus aryabhattaiAbstract
The growth and development of rice is affected by saline soil, however, some salinitytolerant endophytic bacteria can improve its salinity tolerance. In this study, the plant growth- promoting endophytic bacteria Bacillus aryabhattai RL7 was evaluated for the ability to produce proline, 1-aminocyclopropan-1-carboxylate (ACC) deaminase, fixing nitrogen and the effect on the growth and development of rice plants under salinity. Bacillus aryabhattai RL7 increased plant growth (shoot length, root length, dry weight, chlorophyll) and the expression of genes (NADPMe2, SOS1, PR1, MYC2, NHX1, SOD and CAT) related to salinity tolerance in rice. The results of this study contribute to the elucidation of the PGPB-mediated mechanism of salt tolerance in rice at the genetic level and the basis for using strain RL7 as a microbial fertilizer for rice-growing areas at risk of salinity.
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