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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...
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...
The role of Bursaphelenchus xylophilus associated bacteria in pine wilt disease
Vicente, Claudia; Nascimento, Francisco; Espada, Margarida; Barbosa, Pedro; Mota, Manuel; Glick, Bernard; 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...
Pseudomonas putida UW4 producing ACC deaminase is a potential biocontrol agent ...
Nascimento, Francisco; Espada, Margarida; Vicente, Claudia; Glick, Bernard; Mota, Manuel; Oliveira, SolangePine 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 ACC deaminase-producing plant growth promoting bacteria has been shown to be a useful strategy to reduce the damage due to biotic and abiotic stresses. Pinus pinaster seedlings inoculated with the AC...
ACC deaminase genes are conserved among Mesorhizobium species able to nodulate ...
Nascimento, Francisco X.; Brígido, Clarisse; Glick, Bernard R.; Oliveira, SolangeRhizobia strains expressing the enzyme 1-aminocyclopropane-1-carboxylate (ACC) deaminase have been reported to display an augmented symbiotic performance as a consequence of lowering the plant ethylene levels that inhibit the nodulation process. Genes encoding ACC deaminase (acdS) have been studied in Rhizobium spp.; however, not much is known about the presence of acdS genes in Mesorhizobium spp. The aim of th...
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