Data on soil properties and halophilic bacterial densities in the Na Si Nuan Secondary Forest at Kantharawichai District, Maha Sarakham, Thailand

Abstract

Saline soil is one of the most crucial problems of arid and semiarid regions because it reduces growth of plant and microorganisms. In Thailand, the inland saline soils are found mostly in the northeastern part especially in Maha Sarakham Province where 85% of the province has geological characteristics as rock salt beds. Saline soil often experiences low soil fertility problems which multiply the adverse effects on plant growth. Interestingly, the Na Si Nuan Secondary Forest, Kantharawichai District, Maha Sarakham, is not affected by salinity although almost the entire province of Maha Sarakham is salt-affected area. Saline soil is a habitat of halophilic bacteria. Bacteria are the most important microorganisms contribute to soil fertility and soil health. Thus data regarding the density of culturable halophilic bacteria and soil properties in this forest soil is useful for reclamation of saline soil and helping to sustain the forest ecosystem.

The role of endophytic bacteria in increasing nitrogen concentration, root length, and dry weight of rice plants (Oryza sativa L.) in saline soil

“…Observations also showed that the N concentration of rice plants decreased with increasing salinity in all treatments. Chookietwattana [21] reported that high soil salinity can increase osmotic stress for plants so that plants are not able to absorb nitrogen optimally. On the other hand, the nitrogenase enzyme produced by bacteria is thought to be inactive under certain saline conditions.…”

The Diversity of Halotolerant and Halophilic Bacteria in the Soil of the Nasinuan Secondary Forest in Maha Sarakham, Thailand

“…The teichoic acids found in the cell walls of Gram-positive bacteria provide the negative charges of the cell surface as a whole, thus increasing the mobility and transport of these bacteria in the environment. These findings may also be due to an extremely low amount of soil organic matter and total nitrogen in the soil samples (Chookietwattana & Yuwa-amornpitak, 2019) since Gram-positive bacteria are more prevalent in soil of low quality, while Gramnegative bacteria dominates in soils of higher quality (Zhou et al, 2017). A total of 50 out of the 55 isolates were Gram-positive rods and endospore-forming.…”