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Krishnamoorthy Ramasamy,Manoharan Melvin Joe,김기윤,이선미,Charlotte Shagol,Anandham Rangasamy1,정종배,Md. Rashedul Islam,사동민 한국토양비료학회 2011 한국토양비료학회지 Vol.44 No.4
Soil microorganisms play a major role in improving soil fertility and plant health. Symbiotic arbuscular mycorrhizal fungi (AMF) form a key component of the soil microbial populations. AMF form a mutualistic association with the host plant and exert a positive influence on its growth and nutrient uptake. The establishment of mycorrhizal symbioses with the host plant can positively be influenced by plant growth promoting rhizobacteria through various mechanisms such as increased spore germination and hyphal permeability in plant roots. Though there are evidences that combined interactions between AMF and PGPR can promote the plant growth however mechanisms of these interactions are poorly understood. Better understanding of the interactions between AMF and other microorganisms is necessary for maintaining soil fertility and enhancing crop production. This paper reviews current knowledge concerning the interactions between AMF and PGPR with plants and discusses on enhanced nutrient availability, biocontrol, abiotic stress tolerance and phytoremediation in sustainable agriculture.
Ramasamy, Krishnamoorthy,Joe, Manoharan Melvin,Kim, Ki-Yoon,Lee, Seon-Mi,Shagol, Charlotte,Rangasamy, Anandham,Chung, Jong-Bae,Islam, Md. Rashedul,Sa, Tong-Min Korean Society of Soil Science and Fertilizer 2011 한국토양비료학회지 Vol.44 No.4
Soil microorganisms play a major role in improving soil fertility and plant health. Symbiotic arbuscular mycorrhizal fungi (AMF) form a key component of the soil microbial populations. AMF form a mutualistic association with the host plant and exert a positive influence on its growth and nutrient uptake. The establishment of mycorrhizal symbioses with the host plant can positively be influenced by plant growth promoting rhizobacteria through various mechanisms such as increased spore germination and hyphal permeability in plant roots. Though there are evidences that combined interactions between AMF and PGPR can promote the plant growth however mechanisms of these interactions are poorly understood. Better understanding of the interactions between AMF and other microorganisms is necessary for maintaining soil fertility and enhancing crop production. This paper reviews current knowledge concerning the interactions between AMF and PGPR with plants and discusses on enhanced nutrient availability, biocontrol, abiotic stress tolerance and phytoremediation in sustainable agriculture.
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.
Lee, Youngwook,Krishnamoorthy, Ramasamy,Selvakumar, Gopal,Kim, Kiyoon,Sa, Tongmin The Korean Society for Applied Biological Chemistr 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.
( Polpass Arul Jose ),( Ramasamy Krishnamoorthy ),( Pandiyan Indira Gandhi ),( Murugaiyan Senthilkumar ),( Veeranan Janahiraman ),( Karunandham Kumutha ),( Aritra Roy Choudhury ),( Sandipan Samaddar ) 한국미생물 · 생명공학회 2020 Journal of microbiology and biotechnology Vol.30 No.7
Mealybugs (Hemiptera: Coccomorpha: Pseudococcidae) harbor diverse microbial symbionts that play essential roles in host physiology, ecology, and evolution. In this study we aimed to reveal microbial communities associated with two different mealybugs, papaya mealybug (Paracoccus marginatus) and two-tailed mealybug (Ferrisia virgata) collected from the same host plant. Comparative analysis of microbial communities associated with these mealybugs revealed differences that appear to stem from phylogenetic associations and different nutritional requirements. This first report on both bacterial and fungal communities associated with these mealybugs provides a preliminary insight on factors affecting the endomicrobial communities.
Lee, Seonmi,Selvakumar, Gopal,Krishnamoorthy, Ramasamy,Kim, Kiyoon,Choi, Joonho,Sa, Tongmin Korean Society of Soil Science and Fertilizer 2013 한국토양비료학회지 Vol.46 No.5
Information on the effective application method of arbuscular mycorrhizal fungi (AMF) inoculum is still inadequate. This work was performed to assess two AMF inoculation methods (dispersed and proximate) on root colonization of sorghum-sudangrass hybrid (Sorghum bicolor L.). In dispersed inoculation method, spores were inoculated in 2 kg pots of soil in which 5 day-old seedlings were transplanted and maintained for 50 days. In the proximate inoculation method, spores were first introduced in 500 mL pots where seeds were sown. After 10 days, the seedlings with the 500 mL soil were transferred to 2 kg pots without disturbing the contents. After 50 days of growth, root colonization and arbuscule abundance significantly increased (over 100%) in proximate method of inoculation. Moreover, sorghum-sudangrass hybrid had higher shoot growth (182.5 cm) and Glomalin related soil protein (GRSP) production in proximate method. Nutrient accumulation, particularly total nitrogen (82.61 mg $plant^{-1}$), was also found to be higher in proximate method of inoculation. Our results demonstrate that the proximate method of inoculation may improve the early stage mycorrhizal symbiosis and inoculum performance in Saemangeum reclaimed soil.