Jorge Sáenz-Mata1*, Rubén Palacio-Rodríguez1, Homero Sánchez-Galván1 & Nagamani Balagurusamy2
1Laboratorio de Ecología Microbiana, Facultad de Ciencias Biológicas , Universidad Juárez del Estado de Durango , Av. Universidad S/N, Fracc. Filadelfia ,C.P. 35010 Gómez Palacio , Durango , Mexico
2Laboratorio de Biorremediación, Escuela de Ciencias Biológicas , Universidad Autónoma de Coahuila, Carretera Torreón-Matamoros Km. 7.5, Ciudad Universitaria , C.P. 27276 Torreón, Coahuila, Mexico
In: Sabkha Ecosystem V: The Americas (Eds.) M.A. Khan, B. Boër, M. Ozturk, M. Clüsener-Godt, B. Gul, S.-W. Breckle. Series Vol. 48. Springer International Publishing, Switzerland. pp.411-425. (ISBN 978-3-319-27093-7).
Saline soils are a major problem for agriculture, commonly salinization reduces the area for agriculture in arid and semiarid regions. On the other hand ecosystems with natural saline soils represent biotopes where the halophytes grow and develop without problems. The rhizospheres of halophytes represent excellent niches to fi nd salt tolerant rhizobacteria with the ability to promote plant growth. Plant growth-promotion rhizobacteria (PGPR) can enhance growth in plants and protect to salt stress by several ways such as 1-Aminocyclopropane-1-carboxylate deaminase (ACC deaminase), biological nitrogen fi xation, phytohormones production, exopolysaccharides, etc. The use of PGPR in agriculture as biofertilizer has greatly increased as an alternative to replace agrochemicals. In arid and semiarid areas the salt-tolerant PGPR have begun to emerge as an important alternative to recuperate abandoned farmland affected by salt, the PGPR alleviate salt stress in halophytes to some extent, but the application is more outstanding for glycophytes of agricultural interest for protection against salt stress. In this chapter, we present a vision of the salt-tolerant PGPR ability to facilitate plant growth in presence of salt, the potential of halophytes rhizosphere as reservoir of beneficial microbes and the future application as bio-inoculants as alternative in agriculture is reviewed.