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이영옥,Ramasamy Krishnamoorthy,셀바,김기윤,사동민 한국응용생명화학회 2015 Applied Biological Chemistry (Appl Biol Chem) Vol.58 No.4
Arbuscular mycorrhizal fungi (AMF) and plant growth-promoting bacteria (PGPB) can have multiple impacts on phytohormone production and nutrient uptake to improve plant growth. Co-inoculation of AMF and PGPB can mitigate the effects of salinity in plants. This study was conducted to evaluate the efficacy of co-inoculation of AMF (Glomus etunicatum) and Methylobacterium oryzae CBMB20 to alleviate salt stress and improve maize growth. Single and co-inoculation of AMF and M. oryzae CBMB20 significantly increased dry biomass, AMF root colonization, and nutrient accumulation in maize plants under salt stress. The proline content and Na uptake were significantly reduced in co-inoculation of AMF and M. oryzae CBMB20. In addition, co-inoculation of AMF and M. oryzae CBMB20 (soil) showed higher AMF density and AMF colonization compared to single AMF treatment. Among all treatments, co-inoculation of AMF and M. oryzae CBMB20 (soil) was more effective to ameliorate salt stress and improve plant growth. These results demonstrate that co-inoculation of AMF and M. oryzae CBMB20 (soil application) may be an effective alternative to enhance plant growth under salinity stress.
Md. Ashaduzzaman Siddikee,Subbiah Sundaram,MURUGESANCHANDRASEKARAN,김기윤,셀바,사동민 한국응용생명화학회 2015 Applied Biological Chemistry (Appl Biol Chem) Vol.58 No.2
Amelioration of salt stress effect on canola seed germination was investigated using 1-aminocyclopropane- 1-carboxylic acid (ACC) deaminase-producing plant growth promoting halotolerant bacteria. NaCl at 120 mM concentration reduced canola seed germination by 50 %. The inoculation of ACC deaminase-producing halotolerant Brevibacterium epidermidis RS15 and Bacillus aryabhattai RS341 at 120 mM NaCl significantly increased the seed germination with decreased seed ACC content. Notably, the hydrolytic enzymes activities like amylase, invertase, and protease also increased due to inoculation of RS15 and RS341 compared to uninoculated salt stress imposed germinating canola seeds. Ethylene emission of salt stress exposed eight-day-old canola seedlings was reduced by 35.4 and 41.1 % compared to uninoculated salt stressed control due to respective inoculation of RS341 and RS15. The amelioration of salt stress inhibitory effect on the canola seed germination was attributed to the inoculation of ACC deaminase-producing halotolerant bacteria modulating ethylene emission and inducing hydrolytic enzymes.
류형석,Roshith Roshan,김문일,김동우,셀바라지,박대원 한국화학공학회 2017 Korean Journal of Chemical Engineering Vol.34 No.3
Zeolitic imidazolate framework ZIF-23 was prepared and used as catalyst for the solventless synthesis of cyclic carbonate from CO2 and propylene oxide with or without TBAB co-catalyst. ZIF-23 catalysts were prepared by a solvothermal or microwave method and they were characterized by various physicochemical techniques such as XRD, FT-IR, BET, TGA, and FE-SEM. The effects of reaction parameters such as temperature, reaction time, CO2 pressure, and co-catalyst on the reactivity of catalyst were investigated. ZIF-23 was recyclable up to four times without any considerable loss of its initial activity. Reaction mechanism containing the role of ZIF-23 with TBAB co-catalyst was also proposed.