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Expression of an exogenous 1-aminocyclopropane-1-carboxylate deaminase gene in ...
Brígido, Clarisse; Nascimento, Francisco X.; Duan, Jin; Glick, Bernard R.; Oliveira, SolangeOur goal was to study the symbiotic performance of two Mesorhizobium ciceri strains, transformed with an exogenous 1-aminocyclopropane-1-carboxylate deaminase gene (acdS), in chickpea plants under salinity stress. The EE-7 (salt-sensitive) and G-55 (salt-tolerant) M. ciceri strains were transformed with an acdS gene present on plasmid pRKACC. Salinity significantly reduced the overall growth of plants inoculate...
Evidence for the involvement of ACC deaminase from Pseudomonas putida UW4 in th...
Nascimento, Francisco; Vicente, Claudia; Barbosa, Pedro; Espada, Margarida; Glick, B; Mota, Manuel; Oliveira, SolangeAbstract Pine wilt disease, caused by the nematode Bursaphelenchus xylophilus, is responsible for devastation of pine forests worldwide. Until now, there are no effective ways of dealing with this serious threat. The use of 1-aminocyclopropane-1-carboxylate (ACC) deaminase (encoded by the acdS gene)-producing plant growth-promoting bacteria has been shown to be a useful strategy to reduce the damage due to biot...
Characterization of bacterial communities associated with the pine sawyer beetl...
Vicente, Claudia; Nascimento, Francisco; Espada, Margarida; Barbosa, Pedro; Hasegawa, Koichi; Mota, Manuel; Oliveira, SolangePine wilt disease (PWD) has a tremendous impact on worldwide forestlands, both from the environmental and economical viewpoints. Monochamus sp., a xylophagous insect from the Cerambycidae family, plays an important role in dissemination of the pinewood nematode, Bursaphelenchus xylophilus, the primary pathogenic agent of PWD. This study investigates, for the first time, the bacterial communities of Monochamus g...
Enhanced chickpea growth-promotion ability of a Mesorhizobium strain expressing...
Nascimento, Francisco; Brígido, Clarisse; Alho, Luís; Glick, Bernard; Oliveira, SolangeAims The main goal of the study reported herein was to assess the nodulation performance of a Mesorhizobium strain transformed with an exogenous ACC deaminase gene (acdS), and its subsequent ability to increase chickpea plant growth under normal and waterlogged conditions. Methods The Mesorhizobium ciceri strain LMS-1 was transformed with the acdS gene of Pseudomonas putida UW4 by triparental conjugation using...
Mesorhizobium ciceri LMS-1 expressing an exogenous 1-aminocyclopropane-1-carbox...
Nascimento, Francisco; Brígido, Clarisse; Glick, Bernard; Oliveira, Solange; Alho, LuísAims: Our goal was to understand the symbiotic behaviour of a Mesorhizobium strain expressing an exogenous 1-aminocyclopropane-1-carboxylate (ACC) deaminase, which was used as an inoculant of chickpea (Cicer arietinum) plants growing in soil. Methods and Results: Mesorhizobium ciceri LMS-1 (pRKACC) was tested for its plant growth promotion abilities on two chickpea cultivars (ELMO and CHK3226) growing in nonste...
Characterization of Bacteria Associated with Pinewood Nematode Bursaphelenchus ...
Vicente, Claudia S. L.; Nascimento, Francisco; Espada, Margarida; Barbosa, Pedro; Mota, Manuel; Glick, Bernard R.; Oliveira, SolangePine wilt disease (PWD) is a complex disease integrating three major agents: the pathogenic agent, the pinewood nematode Bursaphelenchus xylophilus; the insect-vector Monochamus spp.; and the host pine tree, Pinus sp. Since the early 80's, the notion that another pathogenic agent, namely bacteria, may play a role in PWD has been gaining traction, however the role of bacteria in PWD is still unknown. The present...
Perspectives on the use of plant growth promoting bacteria as biocontrol agents...
Nascimento, Francisco; Vicente, Claudia; Espada, Margarida; Mota, ManuelPine Wilt Disease (PWD) has been considered one of the major threats affecting conifer forests and forestry economics throughout the whole world. This complex disease is caused by the pinewood nematode (PWN) Bursaphelenchus xylophilus, through an intricate interaction with other partners like nematode associated bacteria and an insect vector that is responsible for nematode tree-to-tree transportation and disse...
Heterogeneous microbial community associated with Bursaphelenchus xylophilus
Vicente, Claudia; Nascimento, Francisco; Espada, Margarida; Barbosa, Pedro; Mota, Manuel; Glick, B; Oliveira, SolangePine wilt disease (PWD) is a complex disease integrating three major factors: the causal agent, the pinewood nematode Bursaphelenchus xylophilus; the insect-vector Monochamus spp.; and the host pine tree, Pinus sp. Since the early 80’s, the notion that another pathogenic agent involved, namely bacteria, may play a role in PWD has been gaining traction, however the role of bacteria in PWD is still unknown. The p...
Pine wilt disease and red ring disease of coconut: opportunities and perspectiv...
Mota, Manuel; Souza, Ricardo; Vieira, Paulo; Espada, Margarida; Nascimento, Francisco; Vicente, ClaudiaThe xylophagous nematodes Bursaphelenchus cocophilus and B. xylophilus (Nematoda: Parasitaphelenchidae), are causative agents of two serious diseases, “red ring disease” (RRD) with great importance to coconut and certain oil palm species in Central and South America, and in “pine wilt disease” (PWD), which has wreaked havoc in forest areas in the Far East and now more recently in Europe (Portugal and Spain). PW...
The use of the ACC deaminase producing bacterium Pseudomonas putida UW4 as a bi...
Nascimento, Francisco; Vicente, Claudia; Espada, Margarida; Bernard; Glick, R; Mota, Manuel; Oliveira, SolangePine wilt disease, caused by the nematode Bursaphelenchus xylophilus, is responsible for the devastation of worldwide pine forestlands. Until today, the only effective solution to this serious threat resides on the destruction of infected trees, which is both economic and ecologically unacceptable. The use of ACC deaminase-producing plant growth promoting bacteria has been shown to be a useful strategy in order...
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